sourcemod-central: sourcepawn/compiler/sc1.c@f1edbb5d485a (annotated)

dvander@27	1	/* Pawn compiler
dvander@27	2	*
dvander@27	3	* Function and variable definition and declaration, statement parser.
dvander@27	4	*
dvander@27	5	* Copyright (c) ITB CompuPhase, 1997-2006
dvander@27	6	*
dvander@27	7	* This software is provided "as-is", without any express or implied warranty.
dvander@27	8	* In no event will the authors be held liable for any damages arising from
dvander@27	9	* the use of this software.
dvander@27	10	*
dvander@27	11	* Permission is granted to anyone to use this software for any purpose,
dvander@27	12	* including commercial applications, and to alter it and redistribute it
dvander@27	13	* freely, subject to the following restrictions:
dvander@27	14	*
dvander@27	15	* 1. The origin of this software must not be misrepresented; you must not
dvander@27	16	* claim that you wrote the original software. If you use this software in
dvander@27	17	* a product, an acknowledgment in the product documentation would be
dvander@27	18	* appreciated but is not required.
dvander@27	19	* 2. Altered source versions must be plainly marked as such, and must not be
dvander@27	20	* misrepresented as being the original software.
dvander@27	21	* 3. This notice may not be removed or altered from any source distribution.
dvander@27	22	*
faluco@62	23	* Version: $Id: sc1.c 3636 2006-08-14 15:42:05Z thiadmer $
dvander@27	24	*/
dvander@27	25	#include <assert.h>
dvander@27	26	#include <ctype.h>
dvander@27	27	#include <limits.h>
dvander@27	28	#include <stdarg.h>
dvander@27	29	#include <stdio.h>
dvander@27	30	#include <stdlib.h>
dvander@27	31	#include <string.h>
dvander@27	32
dvander@27	33	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined __MSDOS__
dvander@27	34	#include <conio.h>
dvander@27	35	#include <io.h>
dvander@27	36	#endif
dvander@27	37
dvander@27	38	#if defined LINUX \|\| defined __FreeBSD__ \|\| defined __OpenBSD__
dvander@27	39	#include <sclinux.h>
dvander@27	40	#include <binreloc.h> /* from BinReloc, see www.autopackage.org */
dvander@27	41	#endif
dvander@27	42
dvander@27	43	#if defined FORTIFY
dvander@27	44	#include <alloc/fortify.h>
dvander@27	45	#endif
dvander@27	46
dvander@27	47	#if defined __BORLANDC__ \|\| defined __WATCOMC__
dvander@27	48	#include <dos.h>
dvander@27	49	static unsigned total_drives; /* dummy variable */
dvander@27	50	#define dos_setdrive(i) _dos_setdrive(i,&total_drives)
dvander@27	51	#elif defined _MSC_VER && defined _WIN32
dvander@27	52	#include <direct.h> /* for _chdrive() */
dvander@27	53	#define dos_setdrive(i) _chdrive(i)
dvander@27	54	#endif
dvander@27	55	#if defined __BORLANDC__
dvander@27	56	#include <dir.h> /* for chdir() */
dvander@27	57	#elif defined __WATCOMC__
dvander@27	58	#include <direct.h> /* for chdir() */
dvander@27	59	#endif
dvander@27	60	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined _Windows
dvander@27	61	#include <windows.h>
dvander@27	62	#endif
dvander@27	63
dvander@27	64	#include <time.h>
dvander@27	65
dvander@27	66	#include "lstring.h"
dvander@27	67	#include "sc.h"
dvander@27	68	#include "svnrev.h"
dvander@116	69	#include "sctracker.h"
dvander@27	70	#define VERSION_STR "3.2." SVN_REVSTR
dvander@27	71	#define VERSION_INT 0x0302
dvander@27	72
dvander@27	73	static void resetglobals(void);
dvander@27	74	static void initglobals(void);
dvander@27	75	static char get_extension(char filename);
dvander@27	76	static void setopt(int argc,char *argv,char oname,char ename,char pname,
dvander@27	77	char rname,char codepage);
dvander@27	78	static void setconfig(char *root);
dvander@27	79	static void setcaption(void);
dvander@27	80	static void about(void);
dvander@27	81	static void setconstants(void);
dvander@27	82	static void parse(void);
dvander@27	83	static void dumplits(void);
dvander@27	84	static void dumpzero(int count);
dvander@27	85	static void declfuncvar(int fpublic,int fstatic,int fstock,int fconst);
dvander@27	86	static void declglb(char *firstname,int firsttag,int fpublic,int fstatic,
dvander@27	87	int stock,int fconst);
dvander@27	88	static int declloc(int fstatic);
dvander@27	89	static void decl_const(int table);
dvander@27	90	static void decl_enum(int table);
dvander@27	91	static cell needsub(int tag,constvalue *enumroot);
dvander@27	92	static void initials(int ident,int tag,cell *size,int dim[],int numdim,
dvander@27	93	constvalue *enumroot);
dvander@27	94	static cell initarray(int ident,int tag,int dim[],int numdim,int cur,
dvander@27	95	int startlit,int counteddim[],constvalue *lastdim,
dvander@27	96	constvalue enumroot,int errorfound);
dvander@27	97	static cell initvector(int ident,int tag,cell size,int fillzero,
dvander@27	98	constvalue enumroot,int errorfound);
dvander@27	99	static cell init(int ident,int tag,int errorfound);
dvander@27	100	static int getstates(const char *funcname);
dvander@27	101	static void attachstatelist(symbol *sym, int state_id);
dvander@27	102	static void funcstub(int fnative);
dvander@27	103	static int newfunc(char *firstname,int firsttag,int fpublic,int fstatic,int stock);
dvander@27	104	static int declargs(symbol *sym,int chkshadow);
dvander@27	105	static void doarg(char *name,int ident,int offset,int tags[],int numtags,
dvander@27	106	int fpublic,int fconst,int chkshadow,arginfo *arg);
dvander@27	107	static void make_report(symbol root,FILE log,char *sourcefile);
dvander@27	108	static void reduce_referrers(symbol *root);
dvander@27	109	static long max_stacksize(symbol root,int recursion);
dvander@27	110	static int testsymbols(symbol *root,int level,int testlabs,int testconst);
dvander@27	111	static void destructsymbols(symbol *root,int level);
dvander@27	112	static constvalue find_constval_byval(constvalue table,cell val);
faluco@62	113	static symbol fetchlab(char name);
dvander@27	114	static void statement(int *lastindent,int allow_decl);
faluco@62	115	static void compound(int stmt_sameline,int starttok);
faluco@62	116	static int test(int label,int parens,int invert);
dvander@27	117	static int doexpr(int comma,int chkeffect,int allowarray,int mark_endexpr,
dvander@27	118	int tag,symbol *symptr,int chkfuncresult);
dvander@27	119	static void doassert(void);
dvander@27	120	static void doexit(void);
faluco@62	121	static int doif(void);
faluco@62	122	static int dowhile(void);
faluco@62	123	static int dodo(void);
faluco@62	124	static int dofor(void);
dvander@27	125	static void doswitch(void);
dvander@27	126	static void dogoto(void);
dvander@27	127	static void dolabel(void);
dvander@27	128	static void doreturn(void);
dvander@27	129	static void dobreak(void);
dvander@27	130	static void docont(void);
dvander@27	131	static void dosleep(void);
dvander@27	132	static void dostate(void);
dvander@27	133	static void addwhile(int *ptr);
dvander@27	134	static void delwhile(void);
dvander@27	135	static int *readwhile(void);
dvander@27	136	static void inst_datetime_defines(void);
dvander@27	137
faluco@62	138	enum {
faluco@62	139	TEST_PLAIN, /* no parentheses */
faluco@62	140	TEST_THEN, /* '(' <expr> ')' or <expr> 'then' */
faluco@62	141	TEST_DO, /* '(' <expr> ')' or <expr> 'do' */
faluco@62	142	TEST_OPT, /* '(' <expr> ')' or <expr> */
faluco@62	143	};
dvander@27	144	static int norun = 0; /* the compiler never ran */
faluco@62	145	static int autozero = 1; /* if 1 will zero out the variable, if 0 omit the zeroing */
dvander@27	146	static int lastst = 0; /* last executed statement type */
dvander@27	147	static int nestlevel = 0; /* number of active (open) compound statements */
faluco@62	148	static int endlessloop= 0; /* nesting level of endless loop */
dvander@27	149	static int rettype = 0; /* the type that a "return" expression should have */
dvander@27	150	static int skipinput = 0; /* number of lines to skip from the first input file */
dvander@27	151	static int optproccall = TRUE; /* support "procedure call" */
dvander@27	152	static int verbosity = 1; /* verbosity level, 0=quiet, 1=normal, 2=verbose */
dvander@27	153	static int sc_reparse = 0; /* needs 3th parse because of changed prototypes? */
dvander@27	154	static int sc_parsenum = 0; /* number of the extra parses */
dvander@27	155	static int wq[wqTABSZ]; /* "while queue", internal stack for nested loops */
dvander@27	156	static int wqptr; / pointer to next entry */
dvander@27	157	#if !defined SC_LIGHT
dvander@27	158	static char sc_rootpath[_MAX_PATH];
dvander@27	159	static char sc_documentation=NULL;/ main documentation */
dvander@27	160	#endif
dvander@27	161	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined _Windows
dvander@27	162	static HWND hwndFinish = 0;
dvander@27	163	#endif
dvander@27	164
dvander@27	165	/* "main" of the compiler
dvander@27	166	*/
dvander@27	167	#if defined __cplusplus
dvander@27	168	extern "C"
dvander@27	169	#endif
dvander@27	170	int pc_compile(int argc, char *argv[])
dvander@27	171	{
dvander@27	172	int entry,i,jmpcode;
dvander@27	173	int retcode;
dvander@27	174	char incfname[_MAX_PATH];
dvander@27	175	char reportname[_MAX_PATH];
dvander@27	176	char codepage[MAXCODEPAGE+1];
dvander@27	177	FILE *binf;
dvander@27	178	void *inpfmark;
dvander@27	179	int lcl_packstr,lcl_needsemicolon,lcl_tabsize;
dvander@27	180	#if !defined SC_LIGHT
dvander@27	181	int hdrsize=0;
dvander@27	182	#endif
dvander@27	183	char *ptr;
dvander@27	184
dvander@27	185	/* set global variables to their initial value */
dvander@27	186	binf=NULL;
dvander@27	187	initglobals();
dvander@27	188	errorset(sRESET,0);
dvander@27	189	errorset(sEXPRRELEASE,0);
dvander@27	190	lexinit();
dvander@27	191
dvander@27	192	/* make sure that we clean up on a fatal error; do this before the first
dvander@27	193	* call to error(). */
dvander@27	194	if ((jmpcode=setjmp(errbuf))!=0)
dvander@27	195	goto cleanup;
dvander@27	196
dvander@27	197	/* allocate memory for fixed tables */
dvander@27	198	inpfname=(char*)malloc(_MAX_PATH);
dvander@27	199	if (inpfname==NULL)
dvander@27	200	error(103); /* insufficient memory */
dvander@27	201	litq=(cell)malloc(litmaxsizeof(cell));
dvander@27	202	if (litq==NULL)
dvander@27	203	error(103); /* insufficient memory */
dvander@27	204	if (!phopt_init())
dvander@27	205	error(103); /* insufficient memory */
dvander@27	206
dvander@27	207	setopt(argc,argv,outfname,errfname,incfname,reportname,codepage);
dvander@27	208	strcpy(binfname,outfname);
dvander@27	209	ptr=get_extension(binfname);
dvander@27	210	if (ptr!=NULL && stricmp(ptr,".asm")==0)
dvander@27	211	set_extension(binfname,".smx",TRUE);
dvander@27	212	else
dvander@27	213	set_extension(binfname,".smx",FALSE);
dvander@27	214	/* set output names that depend on the input name */
dvander@27	215	if (sc_listing)
dvander@27	216	set_extension(outfname,".lst",TRUE);
dvander@27	217	else
dvander@27	218	set_extension(outfname,".asm",TRUE);
dvander@27	219	if (strlen(errfname)!=0)
dvander@27	220	remove(errfname); /* delete file on startup */
dvander@27	221	else if (verbosity>0)
dvander@27	222	setcaption();
dvander@27	223	setconfig(argv[0]); /* the path to the include and codepage files */
dvander@27	224	sc_ctrlchar_org=sc_ctrlchar;
dvander@27	225	lcl_packstr=sc_packstr;
dvander@27	226	lcl_needsemicolon=sc_needsemicolon;
dvander@27	227	lcl_tabsize=sc_tabsize;
dvander@27	228	#if !defined NO_CODEPAGE
dvander@27	229	if (!cp_set(codepage)) /* set codepage */
dvander@27	230	error(108); /* codepage mapping file not found */
dvander@27	231	#endif
dvander@27	232	/* optionally create a temporary input file that is a collection of all
dvander@27	233	* input files
dvander@27	234	*/
dvander@27	235	assert(get_sourcefile(0)!=NULL); /* there must be at least one source file */
dvander@27	236	if (get_sourcefile(1)!=NULL) {
dvander@27	237	/* there are at least two or more source files */
dvander@27	238	char tname,sname;
dvander@27	239	FILE ftmp,fsrc;
dvander@27	240	int fidx;
dvander@27	241	#if defined __WIN32__ \|\| defined _WIN32
dvander@27	242	tname=_tempnam(NULL,"pawn");
dvander@27	243	#elif defined __MSDOS__ \|\| defined _Windows
dvander@27	244	tname=tempnam(NULL,"pawn");
dvander@27	245	#elif defined(MACOS) && !defined(__MACH__)
dvander@27	246	/* tempnam is not supported for the Macintosh CFM build. */
dvander@27	247	error(104,get_sourcefile(1));
dvander@27	248	tname=NULL;
dvander@27	249	sname=NULL;
dvander@27	250	#else
dvander@27	251	tname=tempnam(NULL,"pawn");
dvander@27	252	#endif
dvander@27	253	ftmp=(FILE*)pc_createsrc(tname);
dvander@27	254	for (fidx=0; (sname=get_sourcefile(fidx))!=NULL; fidx++) {
dvander@27	255	unsigned char tstring[128];
dvander@27	256	fsrc=(FILE*)pc_opensrc(sname);
dvander@27	257	if (fsrc==NULL) {
dvander@27	258	strcpy(inpfname,sname); /* avoid invalid filename */
dvander@27	259	error(100,sname);
dvander@27	260	} /* if */
dvander@27	261	pc_writesrc(ftmp,(unsigned char*)"#file ");
dvander@27	262	pc_writesrc(ftmp,(unsigned char*)sname);
dvander@27	263	pc_writesrc(ftmp,(unsigned char*)"\n");
dvander@27	264	while (!pc_eofsrc(fsrc)) {
dvander@27	265	pc_readsrc(fsrc,tstring,sizeof tstring);
dvander@27	266	pc_writesrc(ftmp,tstring);
dvander@27	267	} /* while */
dvander@27	268	pc_closesrc(fsrc);
dvander@27	269	} /* for */
dvander@27	270	pc_closesrc(ftmp);
dvander@27	271	strcpy(inpfname,tname);
dvander@27	272	free(tname);
dvander@27	273	} else {
dvander@27	274	strcpy(inpfname,get_sourcefile(0));
dvander@27	275	} /* if */
dvander@27	276	inpf_org=(FILE*)pc_opensrc(inpfname);
dvander@27	277	if (inpf_org==NULL)
dvander@27	278	error(100,inpfname);
dvander@27	279	freading=TRUE;
dvander@27	280	outf=(FILE)pc_openasm(outfname); / first write to assembler file (may be temporary) */
dvander@27	281	if (outf==NULL)
dvander@27	282	error(101,outfname);
dvander@27	283	/* immediately open the binary file, for other programs to check */
dvander@27	284	if (sc_asmfile \|\| sc_listing) {
dvander@27	285	binf=NULL;
dvander@27	286	} else {
dvander@27	287	binf=(FILE*)pc_openbin(binfname);
dvander@27	288	if (binf==NULL)
dvander@27	289	error(101,binfname);
dvander@27	290	} /* if */
dvander@27	291	setconstants(); /* set predefined constants and tagnames */
dvander@27	292	for (i=0; i<skipinput; i++) /* skip lines in the input file */
dvander@27	293	if (pc_readsrc(inpf_org,pline,sLINEMAX)!=NULL)
dvander@27	294	fline++; /* keep line number up to date */
dvander@27	295	skipinput=fline;
dvander@27	296	sc_status=statFIRST;
dvander@27	297	/* write starting options (from the command line or the configuration file) */
dvander@27	298	if (sc_listing) {
dvander@27	299	char string[150];
dvander@27	300	sprintf(string,"#pragma ctrlchar 0x%02x\n"
dvander@27	301	"#pragma pack %s\n"
dvander@27	302	"#pragma semicolon %s\n"
dvander@27	303	"#pragma tabsize %d\n",
dvander@27	304	sc_ctrlchar,
dvander@27	305	sc_packstr ? "true" : "false",
dvander@27	306	sc_needsemicolon ? "true" : "false",
dvander@27	307	sc_tabsize);
dvander@27	308	pc_writeasm(outf,string);
dvander@27	309	setfiledirect(inpfname);
dvander@27	310	} /* if */
dvander@27	311	/* do the first pass through the file (or possibly two or more "first passes") */
dvander@27	312	sc_parsenum=0;
dvander@27	313	inpfmark=pc_getpossrc(inpf_org);
dvander@27	314	do {
dvander@27	315	/* reset "defined" flag of all functions and global variables */
dvander@27	316	reduce_referrers(&glbtab);
dvander@27	317	delete_symbols(&glbtab,0,TRUE,FALSE);
dvander@27	318	#if !defined NO_DEFINE
dvander@27	319	delete_substtable();
dvander@27	320	inst_datetime_defines();
dvander@27	321	#endif
dvander@27	322	resetglobals();
dvander@27	323	sc_ctrlchar=sc_ctrlchar_org;
dvander@27	324	sc_packstr=lcl_packstr;
dvander@27	325	sc_needsemicolon=lcl_needsemicolon;
dvander@27	326	sc_tabsize=lcl_tabsize;
dvander@27	327	errorset(sRESET,0);
dvander@27	328	/* reset the source file */
dvander@27	329	inpf=inpf_org;
dvander@27	330	freading=TRUE;
dvander@27	331	pc_resetsrc(inpf,inpfmark); /* reset file position */
dvander@27	332	fline=skipinput; /* reset line number */
dvander@27	333	sc_reparse=FALSE; /* assume no extra passes */
dvander@27	334	sc_status=statFIRST; /* resetglobals() resets it to IDLE */
dvander@27	335
dvander@27	336	if (strlen(incfname)>0) {
dvander@27	337	if (strcmp(incfname,sDEF_PREFIX)==0) {
dvander@27	338	plungefile(incfname,FALSE,TRUE); /* parse "default.inc" */
dvander@27	339	} else {
dvander@27	340	if (!plungequalifiedfile(incfname)) /* parse "prefix" include file */
dvander@27	341	error(100,incfname); /* cannot read from ... (fatal error) */
dvander@27	342	} /* if */
dvander@27	343	} /* if */
dvander@27	344	preprocess(); /* fetch first line */
dvander@27	345	parse(); /* process all input */
dvander@27	346	sc_parsenum++;
dvander@27	347	} while (sc_reparse);
dvander@27	348
dvander@27	349	/* second (or third) pass */
dvander@27	350	sc_status=statWRITE; /* set, to enable warnings */
dvander@27	351	state_conflict(&glbtab);
dvander@27	352
dvander@27	353	/* write a report, if requested */
dvander@27	354	#if !defined SC_LIGHT
dvander@27	355	if (sc_makereport) {
dvander@27	356	FILE *frep=stdout;
dvander@27	357	if (strlen(reportname)>0)
dvander@27	358	frep=fopen(reportname,"wb"); /* avoid translation of \n to \r\n in DOS/Windows */
dvander@27	359	if (frep!=NULL) {
dvander@27	360	make_report(&glbtab,frep,get_sourcefile(0));
dvander@27	361	if (strlen(reportname)>0)
dvander@27	362	fclose(frep);
dvander@27	363	} /* if */
dvander@27	364	if (sc_documentation!=NULL) {
dvander@27	365	free(sc_documentation);
dvander@27	366	sc_documentation=NULL;
dvander@27	367	} /* if */
dvander@27	368	} /* if */
dvander@27	369	#endif
dvander@27	370	if (sc_listing)
dvander@27	371	goto cleanup;
dvander@27	372
dvander@27	373	/* ??? for re-parsing the listing file instead of the original source
dvander@27	374	* file (and doing preprocessing twice):
dvander@27	375	* - close input file, close listing file
dvander@27	376	* - re-open listing file for reading (inpf)
dvander@27	377	* - open assembler file (outf)
dvander@27	378	*/
dvander@27	379
dvander@27	380	/* reset "defined" flag of all functions and global variables */
dvander@27	381	reduce_referrers(&glbtab);
dvander@27	382	delete_symbols(&glbtab,0,TRUE,FALSE);
dvander@27	383	#if !defined NO_DEFINE
dvander@27	384	delete_substtable();
dvander@27	385	inst_datetime_defines();
dvander@27	386	#endif
dvander@27	387	resetglobals();
dvander@27	388	sc_ctrlchar=sc_ctrlchar_org;
dvander@27	389	sc_packstr=lcl_packstr;
dvander@27	390	sc_needsemicolon=lcl_needsemicolon;
dvander@27	391	sc_tabsize=lcl_tabsize;
dvander@27	392	errorset(sRESET,0);
dvander@27	393	/* reset the source file */
dvander@27	394	inpf=inpf_org;
dvander@27	395	freading=TRUE;
dvander@27	396	pc_resetsrc(inpf,inpfmark); /* reset file position */
dvander@27	397	fline=skipinput; /* reset line number */
dvander@27	398	lexinit(); /* clear internal flags of lex() */
dvander@27	399	sc_status=statWRITE; /* allow to write --this variable was reset by resetglobals() */
dvander@27	400	writeleader(&glbtab);
dvander@27	401	insert_dbgfile(inpfname);
dvander@27	402	if (strlen(incfname)>0) {
dvander@27	403	if (strcmp(incfname,sDEF_PREFIX)==0)
dvander@27	404	plungefile(incfname,FALSE,TRUE); /* parse "default.inc" (again) */
dvander@27	405	else
dvander@27	406	plungequalifiedfile(incfname); /* parse implicit include file (again) */
dvander@27	407	} /* if */
dvander@27	408	preprocess(); /* fetch first line */
dvander@27	409	parse(); /* process all input */
dvander@27	410	/* inpf is already closed when readline() attempts to pop of a file */
dvander@27	411	writetrailer(); /* write remaining stuff */
dvander@27	412
dvander@27	413	entry=testsymbols(&glbtab,0,TRUE,FALSE); /* test for unused or undefined
dvander@27	414	* functions and variables */
dvander@27	415	if (!entry)
dvander@27	416	error(13); /* no entry point (no public functions) */
dvander@27	417
dvander@27	418	cleanup:
dvander@27	419	if (inpf!=NULL) /* main source file is not closed, do it now */
dvander@27	420	pc_closesrc(inpf);
dvander@27	421	/* write the binary file (the file is already open) */
dvander@27	422	if (!(sc_asmfile \|\| sc_listing) && errnum==0 && jmpcode==0) {
dvander@27	423	assert(binf!=NULL);
dvander@27	424	pc_resetasm(outf); /* flush and loop back, for reading */
dvander@27	425	#if !defined SC_LIGHT
dvander@27	426	hdrsize=
dvander@27	427	#endif
dvander@27	428	assemble(binf,outf); /* assembler file is now input */
dvander@27	429	} /* if */
dvander@27	430	if (outf!=NULL) {
dvander@27	431	pc_closeasm(outf,!(sc_asmfile \|\| sc_listing));
dvander@27	432	outf=NULL;
dvander@27	433	} /* if */
dvander@27	434	if (binf!=NULL) {
dvander@27	435	pc_closebin(binf,errnum!=0);
dvander@27	436	binf=NULL;
dvander@27	437	} /* if */
dvander@27	438
dvander@27	439	#if !defined SC_LIGHT
dvander@27	440	if (errnum==0 && strlen(errfname)==0) {
dvander@27	441	int recursion;
dvander@27	442	long stacksize=max_stacksize(&glbtab,&recursion);
dvander@27	443	int flag_exceed=0;
dvander@27	444	if (pc_amxlimit>0) {
dvander@27	445	long totalsize=hdrsize+code_idx;
dvander@27	446	if (pc_amxram==0)
dvander@27	447	totalsize+=(glb_declared+pc_stksize)*sizeof(cell);
dvander@27	448	if (totalsize>=pc_amxlimit)
dvander@27	449	flag_exceed=1;
dvander@27	450	} /* if */
dvander@27	451	if (pc_amxram>0 && (glb_declared+pc_stksize)*sizeof(cell)>=(unsigned long)pc_amxram)
dvander@27	452	flag_exceed=1;
dvander@27	453	if (!norun && (sc_debug & sSYMBOLIC)!=0 \|\| verbosity>=2 \|\| stacksize+32>=(long)pc_stksize \|\| flag_exceed) {
dvander@27	454	pc_printf("Header size: %8ld bytes\n", (long)hdrsize);
dvander@27	455	pc_printf("Code size: %8ld bytes\n", (long)code_idx);
dvander@27	456	pc_printf("Data size: %8ld bytes\n", (long)glb_declared*sizeof(cell));
dvander@27	457	pc_printf("Stack/heap size: %8ld bytes; ", (long)pc_stksize*sizeof(cell));
dvander@27	458	pc_printf("estimated max. usage");
dvander@27	459	if (recursion)
faluco@62	460	pc_printf(": unknown, due to recursion\n");
dvander@27	461	else if ((pc_memflags & suSLEEP_INSTR)!=0)
faluco@62	462	pc_printf(": unknown, due to the \"sleep\" instruction\n");
dvander@27	463	else
dvander@27	464	pc_printf("=%ld cells (%ld bytes)\n",stacksize,stacksize*sizeof(cell));
dvander@27	465	pc_printf("Total requirements:%8ld bytes\n", (long)hdrsize+(long)code_idx+(long)glb_declaredsizeof(cell)+(long)pc_stksizesizeof(cell));
dvander@27	466	} /* if */
dvander@27	467	if (flag_exceed)
dvander@27	468	error(106,pc_amxlimit+pc_amxram); /* this causes a jump back to label "cleanup" */
dvander@27	469	} /* if */
dvander@27	470	#endif
dvander@27	471
dvander@27	472	if (inpfname!=NULL) {
dvander@27	473	if (get_sourcefile(1)!=NULL)
dvander@27	474	remove(inpfname); /* the "input file" was in fact a temporary file */
dvander@27	475	free(inpfname);
dvander@27	476	} /* if */
dvander@27	477	if (litq!=NULL)
dvander@27	478	free(litq);
dvander@27	479	phopt_cleanup();
dvander@27	480	stgbuffer_cleanup();
dvander@27	481	clearstk();
dvander@27	482	assert(jmpcode!=0 \|\| loctab.next==NULL);/* on normal flow, local symbols
dvander@27	483	* should already have been deleted */
dvander@27	484	delete_symbols(&loctab,0,TRUE,TRUE); /* delete local variables if not yet
dvander@27	485	* done (i.e. on a fatal error) */
dvander@27	486	delete_symbols(&glbtab,0,TRUE,TRUE);
dvander@27	487	delete_consttable(&tagname_tab);
dvander@27	488	delete_consttable(&libname_tab);
dvander@27	489	delete_consttable(&sc_automaton_tab);
dvander@27	490	delete_consttable(&sc_state_tab);
dvander@27	491	state_deletetable();
dvander@27	492	delete_aliastable();
dvander@27	493	delete_pathtable();
dvander@27	494	delete_sourcefiletable();
dvander@27	495	delete_dbgstringtable();
dvander@27	496	#if !defined NO_DEFINE
dvander@27	497	delete_substtable();
dvander@27	498	#endif
dvander@27	499	#if !defined SC_LIGHT
dvander@27	500	delete_docstringtable();
dvander@27	501	if (sc_documentation!=NULL)
dvander@27	502	free(sc_documentation);
dvander@27	503	#endif
dvander@27	504	delete_autolisttable();
dvander@27	505	if (errnum!=0) {
dvander@27	506	if (strlen(errfname)==0)
dvander@27	507	pc_printf("\n%d Error%s.\n",errnum,(errnum>1) ? "s" : "");
dvander@27	508	retcode=1;
dvander@27	509	} else if (warnnum!=0){
dvander@27	510	if (strlen(errfname)==0)
dvander@27	511	pc_printf("\n%d Warning%s.\n",warnnum,(warnnum>1) ? "s" : "");
dvander@27	512	retcode=0; /* use "0", so that MAKE and similar tools continue */
dvander@27	513	} else {
dvander@27	514	retcode=jmpcode;
dvander@27	515	if (retcode==0 && verbosity>=2)
dvander@27	516	pc_printf("\nDone.\n");
dvander@27	517	} /* if */
dvander@27	518	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined _Windows
dvander@27	519	if (IsWindow(hwndFinish))
dvander@27	520	PostMessageA(hwndFinish,RegisterWindowMessageA("PawnNotify"),retcode,0L);
dvander@27	521	#endif
dvander@27	522	#if defined FORTIFY
dvander@27	523	Fortify_ListAllMemory();
dvander@27	524	#endif
dvander@27	525	return retcode;
dvander@27	526	}
dvander@27	527
dvander@27	528	#if defined __cplusplus
dvander@27	529	extern "C"
dvander@27	530	#endif
dvander@27	531	int pc_addconstant(char *name,cell value,int tag)
dvander@27	532	{
dvander@27	533	errorset(sFORCESET,0); /* make sure error engine is silenced */
dvander@27	534	sc_status=statIDLE;
dvander@27	535	add_constant(name,value,sGLOBAL,tag);
dvander@27	536	return 1;
dvander@27	537	}
dvander@27	538
dvander@27	539	static void inst_datetime_defines(void)
dvander@27	540	{
dvander@27	541	char date[64];
dvander@27	542	char ltime[64];
dvander@27	543	time_t td;
dvander@27	544	struct tm *curtime;
dvander@27	545
dvander@27	546	time(&td);
dvander@27	547	curtime = localtime(&td);
dvander@27	548	strftime(date, 31, "\"%m/%d%Y\"", curtime);
dvander@27	549	strftime(ltime, 31, "\"%H:%M:%S\"", curtime);
dvander@27	550
dvander@27	551	insert_subst("__DATE__", date, 8);
dvander@27	552	insert_subst("__TIME__", ltime, 8);
dvander@27	553	}
dvander@27	554
dvander@27	555	#if defined __cplusplus
dvander@27	556	extern "C"
dvander@27	557	#endif
dvander@27	558	int pc_addtag(char *name)
dvander@27	559	{
dvander@27	560	cell val;
dvander@27	561	constvalue *ptr;
dvander@27	562	int last,tag;
dvander@27	563
dvander@27	564	if (name==NULL) {
dvander@27	565	/* no tagname was given, check for one */
dvander@27	566	if (lex(&val,&name)!=tLABEL) {
dvander@27	567	lexpush();
dvander@27	568	return 0; /* untagged */
dvander@27	569	} /* if */
dvander@27	570	} /* if */
dvander@27	571
dvander@27	572	assert(strchr(name,':')==NULL); /* colon should already have been stripped */
dvander@27	573	last=0;
dvander@27	574	ptr=tagname_tab.next;
dvander@27	575	while (ptr!=NULL) {
dvander@27	576	tag=(int)(ptr->value & TAGMASK);
dvander@27	577	if (strcmp(name,ptr->name)==0)
dvander@27	578	return tag; /* tagname is known, return its sequence number */
dvander@27	579	tag &= (int)~FIXEDTAG;
dvander@27	580	if (tag>last)
dvander@27	581	last=tag;
dvander@27	582	ptr=ptr->next;
dvander@27	583	} /* while */
dvander@27	584
dvander@27	585	/* tagname currently unknown, add it */
dvander@27	586	tag=last+1; /* guaranteed not to exist already */
dvander@27	587	if (isupper(*name))
dvander@27	588	tag \|= (int)FIXEDTAG;
dvander@27	589	append_constval(&tagname_tab,name,(cell)tag,0);
dvander@27	590	return tag;
dvander@27	591	}
dvander@27	592
dvander@27	593	static void resetglobals(void)
dvander@27	594	{
dvander@27	595	/* reset the subset of global variables that is modified by the first pass */
dvander@27	596	curfunc=NULL; /* pointer to current function */
dvander@27	597	lastst=0; /* last executed statement type */
dvander@27	598	nestlevel=0; /* number of active (open) compound statements */
dvander@27	599	rettype=0; /* the type that a "return" expression should have */
dvander@27	600	litidx=0; /* index to literal table */
dvander@27	601	stgidx=0; /* index to the staging buffer */
dvander@27	602	sc_labnum=0; /* top value of (internal) labels */
dvander@27	603	staging=0; /* true if staging output */
dvander@27	604	declared=0; /* number of local cells declared */
dvander@27	605	glb_declared=0; /* number of global cells declared */
dvander@27	606	code_idx=0; /* number of bytes with generated code */
dvander@27	607	ntv_funcid=0; /* incremental number of native function */
dvander@27	608	curseg=0; /* 1 if currently parsing CODE, 2 if parsing DATA */
dvander@27	609	freading=FALSE; /* no input file ready yet */
dvander@27	610	fline=0; /* the line number in the current file */
dvander@27	611	fnumber=0; /* the file number in the file table (debugging) */
dvander@27	612	fcurrent=0; /* current file being processed (debugging) */
dvander@27	613	sc_intest=FALSE; /* true if inside a test */
dvander@27	614	sideeffect=0; /* true if an expression causes a side-effect */
dvander@27	615	stmtindent=0; /* current indent of the statement */
dvander@27	616	indent_nowarn=FALSE; /* do not skip warning "217 loose indentation" */
dvander@27	617	sc_allowtags=TRUE; /* allow/detect tagnames */
dvander@27	618	sc_status=statIDLE;
dvander@27	619	sc_allowproccall=FALSE;
dvander@27	620	pc_addlibtable=TRUE; /* by default, add a "library table" to the output file */
dvander@27	621	sc_alignnext=FALSE;
dvander@27	622	pc_docexpr=FALSE;
ds@52	623	pc_deprecate=NULL;
dvander@27	624	sc_curstates=0;
dvander@27	625	pc_memflags=0;
dvander@27	626	}
dvander@27	627
dvander@27	628	static void initglobals(void)
dvander@27	629	{
dvander@27	630	resetglobals();
dvander@27	631
dvander@27	632	sc_asmfile=FALSE; /* do not create .ASM file */
dvander@27	633	sc_listing=FALSE; /* do not create .LST file */
dvander@27	634	skipinput=0; /* number of lines to skip from the first input file */
dvander@27	635	sc_ctrlchar=CTRL_CHAR;/* the escape character */
dvander@27	636	litmax=sDEF_LITMAX; /* current size of the literal table */
dvander@27	637	errnum=0; /* number of errors */
dvander@27	638	warnnum=0; /* number of warnings */
dvander@27	639	optproccall=FALSE; /* sourcemod: do not support "procedure call" */
dvander@27	640	verbosity=1; /* verbosity level, no copyright banner */
dvander@27	641	sc_debug=sCHKBOUNDS\|sSYMBOLIC; /* sourcemod: full debug stuff */
dvander@27	642	pc_optimize=sOPTIMIZE_DEFAULT; /* sourcemod: full optimization */
dvander@27	643	sc_packstr=FALSE; /* strings are unpacked by default */
dvander@27	644	sc_compress=FALSE; /* always disable compact encoding! */
dvander@27	645	sc_needsemicolon=FALSE;/* semicolon required to terminate expressions? */
dvander@27	646	sc_dataalign=sizeof(cell);
dvander@27	647	pc_stksize=sDEF_AMXSTACK;/* default stack size */
dvander@27	648	pc_amxlimit=0; /* no limit on size of the abstract machine */
dvander@27	649	pc_amxram=0; /* no limit on data size of the abstract machine */
dvander@27	650	sc_tabsize=8; /* assume a TAB is 8 spaces */
dvander@27	651	sc_rationaltag=0; /* assume no support for rational numbers */
dvander@27	652	rational_digits=0; /* number of fractional digits */
dvander@27	653
dvander@27	654	outfname[0]='\0'; /* output file name */
dvander@27	655	errfname[0]='\0'; /* error file name */
dvander@27	656	inpf=NULL; /* file read from */
dvander@27	657	inpfname=NULL; /* pointer to name of the file currently read from */
dvander@27	658	outf=NULL; /* file written to */
dvander@27	659	litq=NULL; /* the literal queue */
dvander@27	660	glbtab.next=NULL; /* clear global variables/constants table */
dvander@27	661	loctab.next=NULL; /* " local " / " " */
dvander@27	662	tagname_tab.next=NULL;/* tagname table */
dvander@27	663	libname_tab.next=NULL;/* library table (#pragma library "..." syntax) */
dvander@27	664
dvander@27	665	pline[0]='\0'; /* the line read from the input file */
dvander@27	666	lptr=NULL; /* points to the current position in "pline" */
dvander@27	667	curlibrary=NULL; /* current library */
dvander@27	668	inpf_org=NULL; /* main source file */
dvander@27	669
dvander@27	670	wqptr=wq; /* initialize while queue pointer */
dvander@27	671
dvander@27	672	#if !defined SC_LIGHT
dvander@27	673	sc_documentation=NULL;
dvander@27	674	sc_makereport=FALSE; /* do not generate a cross-reference report */
dvander@27	675	#endif
dvander@27	676	}
dvander@27	677
dvander@27	678	static char get_extension(char filename)
dvander@27	679	{
dvander@27	680	char *ptr;
dvander@27	681
dvander@27	682	assert(filename!=NULL);
dvander@27	683	ptr=strrchr(filename,'.');
dvander@27	684	if (ptr!=NULL) {
dvander@27	685	/* ignore extension on a directory or at the start of the filename */
dvander@27	686	if (strchr(ptr,DIRSEP_CHAR)!=NULL \|\| ptr==filename \|\| *(ptr-1)==DIRSEP_CHAR)
dvander@27	687	ptr=NULL;
dvander@27	688	} /* if */
dvander@27	689	return ptr;
dvander@27	690	}
dvander@27	691
dvander@27	692	/* set_extension
dvander@27	693	* Set the default extension, or force an extension. To erase the
dvander@27	694	* extension of a filename, set "extension" to an empty string.
dvander@27	695	*/
dvander@27	696	SC_FUNC void set_extension(char filename,char extension,int force)
dvander@27	697	{
dvander@27	698	char *ptr;
dvander@27	699
dvander@27	700	assert(extension!=NULL && (extension=='\0' \|\| extension=='.'));
dvander@27	701	assert(filename!=NULL);
dvander@27	702	ptr=get_extension(filename);
dvander@27	703	if (force && ptr!=NULL)
dvander@27	704	ptr='\0'; / set zero terminator at the position of the period */
dvander@27	705	if (force \|\| ptr==NULL)
dvander@27	706	strcat(filename,extension);
dvander@27	707	}
dvander@27	708
dvander@27	709	static const char option_value(const char optptr)
dvander@27	710	{
dvander@27	711	return ((optptr+1)=='=' \|\| (optptr+1)==':') ? optptr+2 : optptr+1;
dvander@27	712	}
dvander@27	713
dvander@27	714	static int toggle_option(const char *optptr, int option)
dvander@27	715	{
dvander@27	716	switch (*option_value(optptr)) {
dvander@27	717	case '\0':
dvander@27	718	option=!option;
dvander@27	719	break;
dvander@27	720	case '-':
dvander@27	721	option=FALSE;
dvander@27	722	break;
dvander@27	723	case '+':
dvander@27	724	option=TRUE;
dvander@27	725	break;
dvander@27	726	default:
dvander@27	727	about();
dvander@27	728	} /* switch */
dvander@27	729	return option;
dvander@27	730	}
dvander@27	731
dvander@27	732	/* Parsing command line options is indirectly recursive: parseoptions()
dvander@27	733	* calls parserespf() to handle options in a a response file and
dvander@27	734	* parserespf() calls parseoptions() at its turn after having created
dvander@27	735	* an "option list" from the contents of the file.
dvander@27	736	*/
dvander@27	737	static void parserespf(char filename,char oname,char ename,char pname,
dvander@27	738	char rname, char codepage);
dvander@27	739
dvander@27	740	static void parseoptions(int argc,char *argv,char oname,char ename,char pname,
dvander@27	741	char rname, char codepage)
dvander@27	742	{
dvander@27	743	char str[_MAX_PATH],*name;
dvander@27	744	const char *ptr;
dvander@27	745	int arg,i,isoption;
dvander@27	746
dvander@27	747	for (arg=1; arg<argc; arg++) {
dvander@27	748	#if DIRSEP_CHAR=='/'
dvander@27	749	isoption= argv[arg][0]=='-';
dvander@27	750	#else
dvander@27	751	isoption= argv[arg][0]=='/' \|\| argv[arg][0]=='-';
dvander@27	752	#endif
dvander@27	753	if (isoption) {
dvander@27	754	ptr=&argv[arg][1];
dvander@27	755	switch (*ptr) {
dvander@27	756	case 'A':
dvander@27	757	i=atoi(option_value(ptr));
dvander@27	758	if ((i % sizeof(cell))==0)
dvander@27	759	sc_dataalign=i;
dvander@27	760	else
dvander@27	761	about();
dvander@27	762	break;
dvander@27	763	case 'a':
dvander@27	764	if (*(ptr+1)!='\0')
dvander@27	765	about();
dvander@27	766	sc_asmfile=TRUE; /* skip last pass of making binary file */
dvander@27	767	if (verbosity>1)
dvander@27	768	verbosity=1;
dvander@27	769	break;
dvander@27	770	#if 0 /* not allowed in SourceMod */
dvander@27	771	case 'C':
dvander@27	772	#if AMX_COMPACTMARGIN > 2
dvander@27	773	sc_compress=toggle_option(ptr,sc_compress);
dvander@27	774	#else
dvander@27	775	about();
dvander@27	776	#endif
dvander@27	777	break;
dvander@27	778	#endif
dvander@27	779	case 'c':
dvander@27	780	strlcpy(codepage,option_value(ptr),MAXCODEPAGE); /* set name of codepage */
dvander@27	781	break;
dvander@27	782	#if defined dos_setdrive
dvander@27	783	case 'D': /* set active directory */
dvander@27	784	ptr=option_value(ptr);
dvander@27	785	if (ptr[1]==':')
dvander@27	786	dos_setdrive(toupper(ptr)-'A'+1); / set active drive */
dvander@27	787	chdir(ptr);
dvander@27	788	break;
dvander@27	789	#endif
dvander@27	790	#if 0 /* not allowed to change for SourceMod */
dvander@27	791	case 'd':
dvander@27	792	switch (*option_value(ptr)) {
dvander@27	793	case '0':
dvander@27	794	sc_debug=0;
dvander@27	795	break;
dvander@27	796	case '1':
dvander@27	797	sc_debug=sCHKBOUNDS; /* assertions and bounds checking */
dvander@27	798	break;
dvander@27	799	case '2':
dvander@27	800	sc_debug=sCHKBOUNDS \| sSYMBOLIC; /* also symbolic info */
dvander@27	801	break;
dvander@27	802	case '3':
dvander@27	803	sc_debug=sCHKBOUNDS \| sSYMBOLIC;
dvander@27	804	pc_optimize=sOPTIMIZE_NONE;
dvander@27	805	/* also avoid peephole optimization */
dvander@27	806	break;
dvander@27	807	default:
dvander@27	808	about();
dvander@27	809	} /* switch */
dvander@27	810	break;
dvander@27	811	#endif
dvander@27	812	case 'e':
dvander@27	813	strlcpy(ename,option_value(ptr),_MAX_PATH); /* set name of error file */
dvander@27	814	break;
dvander@27	815	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined _Windows
dvander@27	816	case 'H':
dvander@27	817	hwndFinish=(HWND)atoi(option_value(ptr));
dvander@27	818	if (!IsWindow(hwndFinish))
dvander@27	819	hwndFinish=(HWND)0;
dvander@27	820	break;
dvander@27	821	#endif
dvander@27	822	case 'i':
dvander@27	823	strlcpy(str,option_value(ptr),sizeof str); /* set name of include directory */
dvander@27	824	i=strlen(str);
dvander@27	825	if (i>0) {
dvander@27	826	if (str[i-1]!=DIRSEP_CHAR) {
dvander@27	827	str[i]=DIRSEP_CHAR;
dvander@27	828	str[i+1]='\0';
dvander@27	829	} /* if */
dvander@27	830	insert_path(str);
dvander@27	831	} /* if */
dvander@27	832	break;
dvander@27	833	case 'l':
dvander@27	834	if (*(ptr+1)!='\0')
dvander@27	835	about();
dvander@27	836	sc_listing=TRUE; /* skip second pass & code generation */
dvander@27	837	break;
dvander@27	838	case 'o':
dvander@27	839	strlcpy(oname,option_value(ptr),_MAX_PATH); /* set name of (binary) output file */
dvander@27	840	break;
dvander@27	841	case 'O':
dvander@27	842	pc_optimize=*option_value(ptr) - '0';
dvander@27	843	if (pc_optimize<sOPTIMIZE_NONE \|\| pc_optimize>=sOPTIMIZE_NUMBER \|\| pc_optimize==sOPTIMIZE_NOMACRO)
dvander@27	844	about();
dvander@27	845	break;
dvander@27	846	case 'p':
dvander@27	847	strlcpy(pname,option_value(ptr),_MAX_PATH); /* set name of implicit include file */
dvander@27	848	break;
dvander@27	849	#if !defined SC_LIGHT
dvander@27	850	case 'r':
dvander@27	851	strlcpy(rname,option_value(ptr),_MAX_PATH); /* set name of report file */
dvander@27	852	sc_makereport=TRUE;
dvander@27	853	if (strlen(rname)>0) {
dvander@27	854	set_extension(rname,".xml",FALSE);
dvander@27	855	} else if ((name=get_sourcefile(0))!=NULL) {
dvander@27	856	assert(strlen(rname)==0);
dvander@27	857	assert(strlen(name)<_MAX_PATH);
dvander@27	858	if ((ptr=strrchr(name,DIRSEP_CHAR))!=NULL)
dvander@27	859	ptr++; /* strip path */
dvander@27	860	else
dvander@27	861	ptr=name;
dvander@27	862	assert(strlen(ptr)<_MAX_PATH);
dvander@27	863	strcpy(rname,ptr);
dvander@27	864	set_extension(rname,".xml",TRUE);
dvander@27	865	} /* if */
dvander@27	866	break;
dvander@27	867	#endif
dvander@27	868	case 'S':
dvander@27	869	i=atoi(option_value(ptr));
dvander@27	870	if (i>32)
dvander@27	871	pc_stksize=(cell)i; /* stack size has minimum size */
dvander@27	872	else
dvander@27	873	about();
dvander@27	874	break;
dvander@27	875	case 's':
dvander@27	876	skipinput=atoi(option_value(ptr));
dvander@27	877	break;
dvander@27	878	case 't':
dvander@27	879	sc_tabsize=atoi(option_value(ptr));
dvander@27	880	break;
dvander@27	881	case 'v':
dvander@27	882	verbosity= isdigit(*option_value(ptr)) ? atoi(option_value(ptr)) : 2;
dvander@27	883	if (sc_asmfile && verbosity>1)
dvander@27	884	verbosity=1;
dvander@27	885	break;
dvander@27	886	case 'w':
dvander@27	887	i=(int)strtol(option_value(ptr),(char **)&ptr,10);
dvander@27	888	if (*ptr=='-')
dvander@27	889	pc_enablewarning(i,0);
dvander@27	890	else if (*ptr=='+')
dvander@27	891	pc_enablewarning(i,1);
dvander@27	892	else if (*ptr=='\0')
dvander@27	893	pc_enablewarning(i,2);
dvander@27	894	break;
dvander@27	895	case 'X':
dvander@27	896	if (*(ptr+1)=='D') {
dvander@27	897	i=atoi(option_value(ptr+1));
dvander@27	898	if (i>64)
dvander@27	899	pc_amxram=(cell)i; /* abstract machine data/stack has minimum size */
dvander@27	900	else
dvander@27	901	about();
dvander@27	902	} else {
dvander@27	903	i=atoi(option_value(ptr));
dvander@27	904	if (i>64)
dvander@27	905	pc_amxlimit=(cell)i;/* abstract machine has minimum size */
dvander@27	906	else
dvander@27	907	about();
dvander@27	908	} /* if */
dvander@27	909	break;
dvander@27	910	case '\\': /* use \ instead for escape characters */
dvander@27	911	sc_ctrlchar='\\';
dvander@27	912	break;
dvander@27	913	case '^': /* use ^ instead for escape characters */
dvander@27	914	sc_ctrlchar='^';
dvander@27	915	break;
dvander@27	916	case ';':
dvander@27	917	sc_needsemicolon=toggle_option(ptr,sc_needsemicolon);
dvander@27	918	break;
dvander@27	919	#if 0 /* not allowed to change in SourceMod */
dvander@27	920	case '(':
dvander@27	921	optproccall=!toggle_option(ptr,!optproccall);
dvander@27	922	break;
dvander@27	923	#endif
dvander@27	924	default: /* wrong option */
dvander@27	925	about();
dvander@27	926	} /* switch */
dvander@27	927	} else if (argv[arg][0]=='@') {
dvander@27	928	#if !defined SC_LIGHT
dvander@27	929	parserespf(&argv[arg][1],oname,ename,pname,rname,codepage);
dvander@27	930	#endif
dvander@27	931	} else if ((ptr=strchr(argv[arg],'='))!=NULL) {
dvander@27	932	i=(int)(ptr-argv[arg]);
dvander@27	933	if (i>sNAMEMAX) {
dvander@27	934	i=sNAMEMAX;
dvander@27	935	error(200,argv[arg],sNAMEMAX); /* symbol too long, truncated to sNAMEMAX chars */
dvander@27	936	} /* if */
dvander@27	937	strlcpy(str,argv[arg],i+1); /* str holds symbol name */
dvander@27	938	i=atoi(ptr+1);
dvander@27	939	add_constant(str,i,sGLOBAL,0);
dvander@27	940	} else {
dvander@27	941	strlcpy(str,argv[arg],sizeof(str)-5); /* -5 because default extension is ".psrc" */
dvander@27	942	set_extension(str,".psrc",FALSE);
dvander@27	943	insert_sourcefile(str);
dvander@27	944	/* The output name is the first input name with a different extension,
dvander@27	945	* but it is stored in a different directory
dvander@27	946	*/
dvander@27	947	if (strlen(oname)==0) {
dvander@27	948	if ((ptr=strrchr(str,DIRSEP_CHAR))!=NULL)
dvander@27	949	ptr++; /* strip path */
dvander@27	950	else
dvander@27	951	ptr=str;
dvander@27	952	assert(strlen(ptr)<_MAX_PATH);
dvander@27	953	strcpy(oname,ptr);
dvander@27	954	} /* if */
dvander@27	955	set_extension(oname,".asm",TRUE);
dvander@27	956	#if !defined SC_LIGHT
dvander@27	957	if (sc_makereport && strlen(rname)==0) {
dvander@27	958	if ((ptr=strrchr(str,DIRSEP_CHAR))!=NULL)
dvander@27	959	ptr++; /* strip path */
dvander@27	960	else
dvander@27	961	ptr=str;
dvander@27	962	assert(strlen(ptr)<_MAX_PATH);
dvander@27	963	strcpy(rname,ptr);
dvander@27	964	set_extension(rname,".xml",TRUE);
dvander@27	965	} /* if */
dvander@27	966	#endif
dvander@27	967	} /* if */
dvander@27	968	} /* for */
dvander@27	969	}
dvander@27	970
dvander@27	971	#if !defined SC_LIGHT
dvander@27	972	static void parserespf(char filename,char oname,char ename,char pname,
dvander@27	973	char rname,char codepage)
dvander@27	974	{
dvander@27	975	#define MAX_OPTIONS 100
dvander@27	976	FILE *fp;
dvander@27	977	char string, ptr, **argv;
dvander@27	978	int argc;
dvander@27	979	long size;
dvander@27	980
dvander@27	981	if ((fp=fopen(filename,"r"))==NULL)
dvander@27	982	error(100,filename); /* error reading input file */
dvander@27	983	/* load the complete file into memory */
dvander@27	984	fseek(fp,0L,SEEK_END);
dvander@27	985	size=ftell(fp);
dvander@27	986	fseek(fp,0L,SEEK_SET);
dvander@27	987	assert(size<INT_MAX);
dvander@27	988	if ((string=(char *)malloc((int)size+1))==NULL)
dvander@27	989	error(103); /* insufficient memory */
dvander@27	990	/* fill with zeros; in MS-DOS, fread() may collapse CR/LF pairs to
dvander@27	991	* a single '\n', so the string size may be smaller than the file
dvander@27	992	* size. */
dvander@27	993	memset(string,0,(int)size+1);
dvander@27	994	fread(string,1,(int)size,fp);
dvander@27	995	fclose(fp);
dvander@27	996	/* allocate table for option pointers */
dvander@27	997	if ((argv=(char *)malloc(MAX_OPTIONSsizeof(char*)))==NULL)
dvander@27	998	error(103); /* insufficient memory */
dvander@27	999	/* fill the options table */
dvander@27	1000	ptr=strtok(string," \t\r\n");
dvander@27	1001	for (argc=1; argc<MAX_OPTIONS && ptr!=NULL; argc++) {
dvander@27	1002	/* note: the routine skips argv[0], for compatibility with main() */
dvander@27	1003	argv[argc]=ptr;
dvander@27	1004	ptr=strtok(NULL," \t\r\n");
dvander@27	1005	} /* for */
dvander@27	1006	if (ptr!=NULL)
dvander@27	1007	error(102,"option table"); /* table overflow */
dvander@27	1008	/* parse the option table */
dvander@27	1009	parseoptions(argc,argv,oname,ename,pname,rname,codepage);
dvander@27	1010	/* free allocated memory */
dvander@27	1011	free(argv);
dvander@27	1012	free(string);
dvander@27	1013	}
dvander@27	1014	#endif
dvander@27	1015
dvander@27	1016	static void setopt(int argc,char *argv,char oname,char ename,char pname,
dvander@27	1017	char rname,char codepage)
dvander@27	1018	{
dvander@27	1019	delete_sourcefiletable(); /* make sure it is empty */
dvander@27	1020	*oname='\0';
dvander@27	1021	*ename='\0';
dvander@27	1022	*pname='\0';
dvander@27	1023	*rname='\0';
dvander@27	1024	*codepage='\0';
dvander@27	1025	strcpy(pname,sDEF_PREFIX);
dvander@27	1026
dvander@27	1027	#if 0 /* needed to test with BoundsChecker for DOS (it does not pass
dvander@27	1028	* through arguments) */
dvander@27	1029	insert_sourcefile("test.p");
dvander@27	1030	strcpy(oname,"test.asm");
dvander@27	1031	#endif
dvander@27	1032
dvander@27	1033	#if !defined SC_LIGHT
dvander@27	1034	/* first parse a "config" file with default options */
dvander@27	1035	if (argv[0]!=NULL) {
dvander@27	1036	char cfgfile[_MAX_PATH];
dvander@27	1037	char *ext;
dvander@27	1038	strcpy(cfgfile,argv[0]);
dvander@27	1039	if ((ext=strrchr(cfgfile,DIRSEP_CHAR))!=NULL) {
dvander@27	1040	(ext+1)='\0'; / strip the program filename */
dvander@27	1041	strcat(cfgfile,"pawn.cfg");
dvander@27	1042	} else {
dvander@27	1043	strcpy(cfgfile,"pawn.cfg");
dvander@27	1044	} /* if */
dvander@27	1045	if (access(cfgfile,4)==0)
dvander@27	1046	parserespf(cfgfile,oname,ename,pname,rname,codepage);
dvander@27	1047	} /* if */
dvander@27	1048	#endif
dvander@27	1049	parseoptions(argc,argv,oname,ename,pname,rname,codepage);
dvander@27	1050	if (get_sourcefile(0)==NULL)
dvander@27	1051	about();
dvander@27	1052	}
dvander@27	1053
dvander@27	1054	#if defined __BORLANDC__ \|\| defined __WATCOMC__
dvander@27	1055	#pragma argsused
dvander@27	1056	#endif
dvander@27	1057	static void setconfig(char *root)
dvander@27	1058	{
dvander@27	1059	#if defined macintosh
dvander@27	1060	insert_path(":include:");
dvander@27	1061	#else
dvander@27	1062	char path[_MAX_PATH];
dvander@27	1063	char ptr,base;
dvander@27	1064	int len;
dvander@27	1065
dvander@27	1066	/* add the default "include" directory */
dvander@27	1067	#if defined __WIN32__ \|\| defined _WIN32
dvander@27	1068	GetModuleFileNameA(NULL,path,_MAX_PATH);
dvander@27	1069	#elif defined LINUX \|\| defined __FreeBSD__ \|\| defined __OpenBSD__
dvander@27	1070	/* see www.autopackage.org for the BinReloc module */
dvander@27	1071	br_init_lib(NULL);
dvander@27	1072	ptr=br_find_exe("spcomp");
dvander@27	1073	strlcpy(path,ptr,sizeof path);
dvander@27	1074	free(ptr);
dvander@27	1075	#else
dvander@27	1076	if (root!=NULL)
dvander@27	1077	strlcpy(path,root,sizeof path); /* path + filename (hopefully) */
dvander@27	1078	#endif
dvander@27	1079	#if defined __MSDOS__
dvander@27	1080	/* strip the options (appended to the path + filename) */
dvander@27	1081	if ((ptr=strpbrk(path," \t/"))!=NULL)
dvander@27	1082	*ptr='\0';
dvander@27	1083	#endif
dvander@27	1084	/* terminate just behind last \ or : */
dvander@27	1085	if ((ptr=strrchr(path,DIRSEP_CHAR))!=NULL \|\| (ptr=strchr(path,':'))!=NULL) {
dvander@27	1086	/* If there is no "\" or ":", the string probably does not contain the
dvander@27	1087	* path; so we just don't add it to the list in that case
dvander@27	1088	*/
dvander@27	1089	*(ptr+1)='\0';
dvander@27	1090	base=ptr;
dvander@27	1091	strcat(path,"include");
dvander@27	1092	len=strlen(path);
dvander@27	1093	path[len]=DIRSEP_CHAR;
dvander@27	1094	path[len+1]='\0';
dvander@27	1095	/* see if it exists */
dvander@27	1096	if (access(path,0)!=0 && *base==DIRSEP_CHAR) {
dvander@27	1097	/* There is no "include" directory below the directory where the compiler
dvander@27	1098	* is found. This typically means that the compiler is in a "bin" sub-directory
dvander@27	1099	* and the "include" is below the parent. So find the parent...
dvander@27	1100	*/
dvander@27	1101	*base='\0';
dvander@27	1102	if ((ptr=strrchr(path,DIRSEP_CHAR))!=NULL) {
dvander@27	1103	*(ptr+1)='\0';
dvander@27	1104	strcat(path,"include");
dvander@27	1105	len=strlen(path);
dvander@27	1106	path[len]=DIRSEP_CHAR;
dvander@27	1107	path[len+1]='\0';
dvander@27	1108	} else {
dvander@27	1109	*base=DIRSEP_CHAR;
dvander@27	1110	} /* if */
dvander@27	1111	} /* if */
dvander@27	1112	insert_path(path);
dvander@27	1113	/* same for the codepage root */
dvander@27	1114	#if !defined NO_CODEPAGE
dvander@27	1115	*ptr='\0';
dvander@27	1116	if (!cp_path(path,"codepage"))
dvander@27	1117	error(109,path); /* codepage path */
dvander@27	1118	#endif
dvander@27	1119	/* also copy the root path (for the XML documentation) */
dvander@27	1120	#if !defined SC_LIGHT
dvander@27	1121	*ptr='\0';
dvander@27	1122	strcpy(sc_rootpath,path);
dvander@27	1123	#endif
dvander@27	1124	} /* if */
dvander@27	1125	#endif /* macintosh */
dvander@27	1126	}
dvander@27	1127
dvander@27	1128	static void setcaption(void)
dvander@27	1129	{
dvander@27	1130	pc_printf("SourcePawn Compiler " SMC_VERSTRING "\n");
dvander@27	1131	pc_printf("Copyright (c) 1997-2006, ITB CompuPhase, (C)2004-2006 AlliedModders, LLC\n\n");
dvander@27	1132	}
dvander@27	1133
dvander@27	1134	static void about(void)
dvander@27	1135	{
dvander@27	1136	if (strlen(errfname)==0) {
dvander@27	1137	setcaption();
dvander@27	1138	pc_printf("Usage: pawncc <filename> [filename...] [options]\n\n");
dvander@27	1139	pc_printf("Options:\n");
dvander@27	1140	pc_printf(" -A<num> alignment in bytes of the data segment and the stack\n");
dvander@27	1141	pc_printf(" -a output assembler code\n");
dvander@27	1142	#if 0 /* not toggleable in SourceMod */
dvander@27	1143	pc_printf(" -C[+/-] compact encoding for output file (default=%c)\n", sc_compress ? '+' : '-');
dvander@27	1144	#endif
dvander@27	1145	pc_printf(" -c<name> codepage name or number; e.g. 1252 for Windows Latin-1\n");
dvander@27	1146	#if defined dos_setdrive
dvander@27	1147	pc_printf(" -Dpath active directory path\n");
dvander@27	1148	#endif
dvander@27	1149	#if 0 /* not used for SourceMod */
dvander@27	1150	pc_printf(" -d<num> debugging level (default=-d%d)\n",sc_debug);
dvander@27	1151	pc_printf(" 0 no symbolic information, no run-time checks\n");
dvander@27	1152	pc_printf(" 1 run-time checks, no symbolic information\n");
dvander@27	1153	pc_printf(" 2 full debug information and dynamic checking\n");
dvander@27	1154	pc_printf(" 3 same as -d2, but implies -O0\n");
dvander@27	1155	#endif
dvander@27	1156	pc_printf(" -e<name> set name of error file (quiet compile)\n");
dvander@27	1157	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined _Windows
dvander@27	1158	pc_printf(" -H<hwnd> window handle to send a notification message on finish\n");
dvander@27	1159	#endif
dvander@27	1160	pc_printf(" -i<name> path for include files\n");
dvander@27	1161	pc_printf(" -l create list file (preprocess only)\n");
dvander@27	1162	pc_printf(" -o<name> set base name of (P-code) output file\n");
dvander@27	1163	pc_printf(" -O<num> optimization level (default=-O%d)\n",pc_optimize);
dvander@27	1164	pc_printf(" 0 no optimization\n");
dvander@27	1165	#if 0 /* not used for SourceMod */
dvander@27	1166	pc_printf(" 1 JIT-compatible optimizations only\n");
dvander@27	1167	#endif
dvander@27	1168	pc_printf(" 2 full optimizations\n");
dvander@27	1169	pc_printf(" -p<name> set name of \"prefix\" file\n");
dvander@27	1170	#if !defined SC_LIGHT
dvander@27	1171	pc_printf(" -r[name] write cross reference report to console or to specified file\n");
dvander@27	1172	#endif
dvander@27	1173	pc_printf(" -S<num> stack/heap size in cells (default=%d)\n",(int)pc_stksize);
dvander@27	1174	pc_printf(" -s<num> skip lines from the input file\n");
dvander@27	1175	pc_printf(" -t<num> TAB indent size (in character positions, default=%d)\n",sc_tabsize);
dvander@27	1176	pc_printf(" -v<num> verbosity level; 0=quiet, 1=normal, 2=verbose (default=%d)\n",verbosity);
dvander@27	1177	pc_printf(" -w<num> disable a specific warning by its number\n");
dvander@27	1178	pc_printf(" -X<num> abstract machine size limit in bytes\n");
dvander@27	1179	pc_printf(" -XD<num> abstract machine data/stack size limit in bytes\n");
dvander@27	1180	pc_printf(" -\\ use '\\' for escape characters\n");
dvander@27	1181	pc_printf(" -^ use '^' for escape characters\n");
dvander@27	1182	pc_printf(" -;[+/-] require a semicolon to end each statement (default=%c)\n", sc_needsemicolon ? '+' : '-');
dvander@27	1183	#if 0 /* not allowed in SourceMod */
dvander@27	1184	pc_printf(" -([+/-] require parantheses for function invocation (default=%c)\n", optproccall ? '-' : '+');
dvander@27	1185	#endif
dvander@27	1186	pc_printf(" sym=val define constant \"sym\" with value \"val\"\n");
dvander@27	1187	pc_printf(" sym= define constant \"sym\" with value 0\n");
dvander@27	1188	#if defined __WIN32__ \|\| defined _WIN32 \|\| defined _Windows \|\| defined __MSDOS__
dvander@27	1189	pc_printf("\nOptions may start with a dash or a slash; the options \"-d0\" and \"/d0\" are\n");
dvander@27	1190	pc_printf("equivalent.\n");
dvander@27	1191	#endif
dvander@27	1192	pc_printf("\nOptions with a value may optionally separate the value from the option letter\n");
dvander@27	1193	pc_printf("with a colon (\":\") or an equal sign (\"=\"). That is, the options \"-d0\", \"-d=0\"\n");
dvander@27	1194	pc_printf("and \"-d:0\" are all equivalent.\n");
dvander@27	1195	} /* if */
dvander@27	1196	norun = 1;
dvander@27	1197	longjmp(errbuf,3); /* user abort */
dvander@27	1198	}
dvander@27	1199
dvander@27	1200	static void setconstants(void)
dvander@27	1201	{
dvander@27	1202	int debug;
dvander@27	1203
dvander@27	1204	assert(sc_status==statIDLE);
dvander@27	1205	append_constval(&tagname_tab,"_",0,0);/* "untagged" */
dvander@27	1206	append_constval(&tagname_tab,"bool",1,0);
dvander@27	1207
dvander@27	1208	add_constant("true",1,sGLOBAL,1); /* boolean flags */
dvander@27	1209	add_constant("false",0,sGLOBAL,1);
dvander@27	1210	add_constant("EOS",0,sGLOBAL,0); /* End Of String, or '\0' */
dvander@27	1211	#if PAWN_CELL_SIZE==16
dvander@27	1212	add_constant("cellbits",16,sGLOBAL,0);
dvander@27	1213	#if defined _I16_MAX
dvander@27	1214	add_constant("cellmax",_I16_MAX,sGLOBAL,0);
dvander@27	1215	add_constant("cellmin",_I16_MIN,sGLOBAL,0);
dvander@27	1216	#else
dvander@27	1217	add_constant("cellmax",SHRT_MAX,sGLOBAL,0);
dvander@27	1218	add_constant("cellmin",SHRT_MIN,sGLOBAL,0);
dvander@27	1219	#endif
dvander@27	1220	#elif PAWN_CELL_SIZE==32
dvander@27	1221	add_constant("cellbits",32,sGLOBAL,0);
dvander@27	1222	#if defined _I32_MAX
dvander@27	1223	add_constant("cellmax",_I32_MAX,sGLOBAL,0);
dvander@27	1224	add_constant("cellmin",_I32_MIN,sGLOBAL,0);
dvander@27	1225	#else
dvander@27	1226	add_constant("cellmax",LONG_MAX,sGLOBAL,0);
dvander@27	1227	add_constant("cellmin",LONG_MIN,sGLOBAL,0);
dvander@27	1228	#endif
dvander@27	1229	#elif PAWN_CELL_SIZE==64
dvander@27	1230	#if !defined _I64_MIN
dvander@27	1231	#define _I64_MIN (-9223372036854775807ULL - 1)
dvander@27	1232	#define _I64_MAX 9223372036854775807ULL
dvander@27	1233	#endif
dvander@27	1234	add_constant("cellbits",64,sGLOBAL,0);
dvander@27	1235	add_constant("cellmax",_I64_MAX,sGLOBAL,0);
dvander@27	1236	add_constant("cellmin",_I64_MIN,sGLOBAL,0);
dvander@27	1237	#else
dvander@27	1238	#error Unsupported cell size
dvander@27	1239	#endif
dvander@27	1240	add_constant("charbits",sCHARBITS,sGLOBAL,0);
dvander@27	1241	add_constant("charmin",0,sGLOBAL,0);
dvander@27	1242	add_constant("charmax",~(-1 << sCHARBITS) - 1,sGLOBAL,0);
dvander@27	1243	add_constant("ucharmax",(1 << (sizeof(cell)-1)*8)-1,sGLOBAL,0);
dvander@27	1244
dvander@27	1245	add_constant("__Pawn",VERSION_INT,sGLOBAL,0);
dvander@27	1246
dvander@27	1247	debug=0;
dvander@27	1248	if ((sc_debug & (sCHKBOUNDS \| sSYMBOLIC))==(sCHKBOUNDS \| sSYMBOLIC))
dvander@27	1249	debug=2;
dvander@27	1250	else if ((sc_debug & sCHKBOUNDS)==sCHKBOUNDS)
dvander@27	1251	debug=1;
dvander@27	1252	add_constant("debug",debug,sGLOBAL,0);
dvander@27	1253
dvander@27	1254	append_constval(&sc_automaton_tab,"",0,0); /* anonymous automaton */
dvander@27	1255	}
dvander@27	1256
dvander@27	1257	static int getclassspec(int initialtok,int fpublic,int fstatic,int fstock,int fconst)
dvander@27	1258	{
dvander@27	1259	int tok,err;
dvander@27	1260	cell val;
dvander@27	1261	char *str;
dvander@27	1262
dvander@27	1263	assert(fconst!=NULL);
dvander@27	1264	assert(fstock!=NULL);
dvander@27	1265	assert(fstatic!=NULL);
dvander@27	1266	assert(fpublic!=NULL);
dvander@27	1267	*fconst=FALSE;
dvander@27	1268	*fstock=FALSE;
dvander@27	1269	*fstatic=FALSE;
dvander@27	1270	*fpublic=FALSE;
dvander@27	1271	switch (initialtok) {
dvander@27	1272	case tCONST:
dvander@27	1273	*fconst=TRUE;
dvander@27	1274	break;
dvander@27	1275	case tSTOCK:
dvander@27	1276	*fstock=TRUE;
dvander@27	1277	break;
dvander@27	1278	case tSTATIC:
dvander@27	1279	*fstatic=TRUE;
dvander@27	1280	break;
dvander@27	1281	case tPUBLIC:
dvander@27	1282	*fpublic=TRUE;
dvander@27	1283	break;
dvander@27	1284	} /* switch */
dvander@27	1285
dvander@27	1286	err=0;
dvander@27	1287	do {
dvander@27	1288	tok=lex(&val,&str); /* read in (new) token */
dvander@27	1289	switch (tok) {
dvander@27	1290	case tCONST:
dvander@27	1291	if (*fconst)
dvander@27	1292	err=42; /* invalid combination of class specifiers */
dvander@27	1293	*fconst=TRUE;
dvander@27	1294	break;
dvander@27	1295	case tSTOCK:
dvander@27	1296	if (*fstock)
dvander@27	1297	err=42; /* invalid combination of class specifiers */
dvander@27	1298	*fstock=TRUE;
dvander@27	1299	break;
dvander@27	1300	case tSTATIC:
dvander@27	1301	if (*fstatic)
dvander@27	1302	err=42; /* invalid combination of class specifiers */
dvander@27	1303	*fstatic=TRUE;
dvander@27	1304	break;
dvander@27	1305	case tPUBLIC:
dvander@27	1306	if (*fpublic)
dvander@27	1307	err=42; /* invalid combination of class specifiers */
dvander@27	1308	*fpublic=TRUE;
dvander@27	1309	break;
dvander@27	1310	default:
dvander@27	1311	lexpush();
dvander@27	1312	tok=0; /* force break out of loop */
dvander@27	1313	} /* switch */
dvander@27	1314	} while (tok && err==0);
dvander@27	1315
dvander@27	1316	/* extra checks */
dvander@27	1317	if (fstatic && fpublic) {
dvander@27	1318	err=42; /* invalid combination of class specifiers */
dvander@27	1319	fstatic=fpublic=FALSE;
dvander@27	1320	} /* if */
dvander@27	1321
dvander@27	1322	if (err)
dvander@27	1323	error(err);
dvander@27	1324	return err==0;
dvander@27	1325	}
dvander@27	1326
dvander@27	1327	/* parse - process all input text
dvander@27	1328	*
dvander@27	1329	* At this level, only static declarations and function definitions are legal.
dvander@27	1330	*/
dvander@27	1331	static void parse(void)
dvander@27	1332	{
dvander@27	1333	int tok,fconst,fstock,fstatic,fpublic;
dvander@27	1334	cell val;
dvander@27	1335	char *str;
dvander@27	1336
dvander@27	1337	while (freading){
dvander@27	1338	/* first try whether a declaration possibly is native or public */
dvander@27	1339	tok=lex(&val,&str); /* read in (new) token */
dvander@27	1340	switch (tok) {
dvander@27	1341	case 0:
dvander@27	1342	/* ignore zero's */
dvander@27	1343	break;
dvander@27	1344	case tNEW:
dvander@27	1345	if (getclassspec(tok,&fpublic,&fstatic,&fstock,&fconst))
dvander@27	1346	declglb(NULL,0,fpublic,fstatic,fstock,fconst);
dvander@27	1347	break;
dvander@27	1348	case tSTATIC:
dvander@27	1349	/* This can be a static function or a static global variable; we know
dvander@27	1350	* which of the two as soon as we have parsed up to the point where an
dvander@27	1351	* opening paranthesis of a function would be expected. To back out after
dvander@27	1352	* deciding it was a declaration of a static variable after all, we have
dvander@27	1353	* to store the symbol name and tag.
dvander@27	1354	*/
dvander@27	1355	if (getclassspec(tok,&fpublic,&fstatic,&fstock,&fconst)) {
dvander@27	1356	assert(!fpublic);
dvander@27	1357	declfuncvar(fpublic,fstatic,fstock,fconst);
dvander@27	1358	} /* if */
dvander@27	1359	break;
dvander@27	1360	case tCONST:
dvander@27	1361	decl_const(sGLOBAL);
dvander@27	1362	break;
dvander@27	1363	case tENUM:
dvander@27	1364	decl_enum(sGLOBAL);
dvander@27	1365	break;
dvander@27	1366	case tPUBLIC:
dvander@27	1367	/* This can be a public function or a public variable; see the comment
dvander@27	1368	* above (for static functions/variables) for details.
dvander@27	1369	*/
dvander@27	1370	if (getclassspec(tok,&fpublic,&fstatic,&fstock,&fconst)) {
dvander@27	1371	assert(!fstatic);
dvander@27	1372	declfuncvar(fpublic,fstatic,fstock,fconst);
dvander@27	1373	} /* if */
dvander@27	1374	break;
dvander@27	1375	case tSTOCK:
dvander@27	1376	/* This can be a stock function or a stock global) variable; see the
dvander@27	1377	* comment above (for static functions/variables) for details.
dvander@27	1378	*/
dvander@27	1379	if (getclassspec(tok,&fpublic,&fstatic,&fstock,&fconst)) {
dvander@27	1380	assert(fstock);
dvander@27	1381	declfuncvar(fpublic,fstatic,fstock,fconst);
dvander@27	1382	} /* if */
dvander@27	1383	break;
dvander@27	1384	case tLABEL:
dvander@27	1385	case tSYMBOL:
dvander@27	1386	case tOPERATOR:
dvander@27	1387	lexpush();
dvander@27	1388	if (!newfunc(NULL,-1,FALSE,FALSE,FALSE)) {
dvander@27	1389	error(10); /* illegal function or declaration */
dvander@27	1390	lexclr(TRUE); /* drop the rest of the line */
dvander@27	1391	litidx=0; /* drop the literal queue too */
dvander@27	1392	} /* if */
dvander@27	1393	break;
dvander@27	1394	case tNATIVE:
dvander@27	1395	funcstub(TRUE); /* create a dummy function */
dvander@27	1396	break;
dvander@27	1397	case tFORWARD:
dvander@27	1398	funcstub(FALSE);
dvander@27	1399	break;
dvander@27	1400	case '}':
dvander@27	1401	error(54); /* unmatched closing brace */
dvander@27	1402	break;
dvander@27	1403	case '{':
dvander@27	1404	error(55); /* start of function body without function header */
dvander@27	1405	break;
dvander@27	1406	default:
dvander@27	1407	if (freading) {
dvander@27	1408	error(10); /* illegal function or declaration */
dvander@27	1409	lexclr(TRUE); /* drop the rest of the line */
dvander@27	1410	litidx=0; /* drop any literal arrays (strings) */
dvander@27	1411	} /* if */
dvander@27	1412	} /* switch */
dvander@27	1413	} /* while */
dvander@27	1414	}
dvander@27	1415
dvander@27	1416	/* dumplits
dvander@27	1417	*
dvander@27	1418	* Dump the literal pool (strings etc.)
dvander@27	1419	*
dvander@27	1420	* Global references: litidx (referred to only)
dvander@27	1421	*/
dvander@27	1422	static void dumplits(void)
dvander@27	1423	{
dvander@27	1424	int j,k;
dvander@27	1425
faluco@62	1426	if (sc_status==statSKIP)
faluco@62	1427	return;
faluco@62	1428
dvander@27	1429	k=0;
dvander@27	1430	while (k<litidx){
dvander@27	1431	/* should be in the data segment */
dvander@27	1432	assert(curseg==2);
dvander@27	1433	defstorage();
dvander@27	1434	j=16; /* 16 values per line */
dvander@27	1435	while (j && k<litidx){
dvander@27	1436	outval(litq[k], FALSE);
dvander@27	1437	stgwrite(" ");
dvander@27	1438	k++;
dvander@27	1439	j--;
dvander@27	1440	if (j==0 \|\| k>=litidx)
dvander@27	1441	stgwrite("\n"); /* force a newline after 10 dumps */
dvander@27	1442	/* Note: stgwrite() buffers a line until it is complete. It recognizes
dvander@27	1443	* the end of line as a sequence of "\n\0", so something like "\n\t"
dvander@27	1444	* so should not be passed to stgwrite().
dvander@27	1445	*/
dvander@27	1446	} /* while */
dvander@27	1447	} /* while */
dvander@27	1448	}
dvander@27	1449
dvander@27	1450	/* dumpzero
dvander@27	1451	*
dvander@27	1452	* Dump zero's for default initial values
dvander@27	1453	*/
dvander@27	1454	static void dumpzero(int count)
dvander@27	1455	{
dvander@27	1456	int i;
dvander@27	1457
faluco@62	1458	if (sc_status==statSKIP \|\| count<=0)
dvander@27	1459	return;
dvander@27	1460	assert(curseg==2);
dvander@27	1461	defstorage();
dvander@27	1462	i=0;
dvander@27	1463	while (count-- > 0) {
dvander@27	1464	outval(0, FALSE);
dvander@27	1465	i=(i+1) % 16;
dvander@27	1466	stgwrite((i==0 \|\| count==0) ? "\n" : " ");
dvander@27	1467	if (i==0 && count>0)
dvander@27	1468	defstorage();
dvander@27	1469	} /* while */
dvander@27	1470	}
dvander@27	1471
dvander@27	1472	static void aligndata(int numbytes)
dvander@27	1473	{
dvander@27	1474	assert(numbytes % sizeof(cell) == 0); /* alignment must be a multiple of
dvander@27	1475	* the cell size */
dvander@27	1476	assert(numbytes!=0);
dvander@27	1477
dvander@27	1478	if ((((glb_declared+litidx)*sizeof(cell)) % numbytes)!=0) {
dvander@27	1479	while ((((glb_declared+litidx)*sizeof(cell)) % numbytes)!=0)
dvander@27	1480	litadd(0);
dvander@27	1481	} /* if */
dvander@27	1482
dvander@27	1483	}
dvander@27	1484
dvander@27	1485	#if !defined SC_LIGHT
dvander@27	1486	/* sc_attachdocumentation()
dvander@27	1487	* appends documentation comments to the passed-in symbol, or to a global
dvander@27	1488	* string if "sym" is NULL.
dvander@27	1489	*/
dvander@27	1490	void sc_attachdocumentation(symbol *sym)
dvander@27	1491	{
dvander@27	1492	int line;
dvander@27	1493	size_t length;
dvander@27	1494	char str,doc;
dvander@27	1495
dvander@27	1496	if (!sc_makereport \|\| sc_status!=statFIRST \|\| sc_parsenum>0) {
dvander@27	1497	/* just clear the entire table */
dvander@27	1498	delete_docstringtable();
dvander@27	1499	return;
dvander@27	1500	} /* if */
dvander@27	1501	/* in the case of state functions, multiple documentation sections may
dvander@27	1502	* appear; we should concatenate these
dvander@27	1503	* (with forward declarations, this is also already the case, so the assertion
dvander@27	1504	* below is invalid)
dvander@27	1505	*/
dvander@27	1506	// assert(sym==NULL \|\| sym->documentation==NULL \|\| sym->states!=NULL);
dvander@27	1507
dvander@27	1508	/* first check the size */
dvander@27	1509	length=0;
dvander@27	1510	for (line=0; (str=get_docstring(line))!=NULL && *str!=sDOCSEP; line++) {
dvander@27	1511	if (length>0)
dvander@27	1512	length++; /* count 1 extra for a separating space */
dvander@27	1513	length+=strlen(str);
dvander@27	1514	} /* for */
dvander@27	1515	if (sym==NULL && sc_documentation!=NULL) {
dvander@27	1516	length += strlen(sc_documentation) + 1 + 4; /* plus 4 for "<p/>" */
dvander@27	1517	assert(length>strlen(sc_documentation));
dvander@27	1518	} /* if */
dvander@27	1519
dvander@27	1520	if (length>0) {
dvander@27	1521	/* allocate memory for the documentation */
dvander@27	1522	if (sym!=NULL && sym->documentation!=NULL)
dvander@27	1523	length+=strlen(sym->documentation) + 1 + 4;/* plus 4 for "<p/>" */
dvander@27	1524	doc=(char)malloc((length+1)sizeof(char));
dvander@27	1525	if (doc!=NULL) {
dvander@27	1526	/* initialize string or concatenate */
dvander@27	1527	if (sym==NULL && sc_documentation!=NULL) {
dvander@27	1528	strcpy(doc,sc_documentation);
dvander@27	1529	strcat(doc,"<p/>");
dvander@27	1530	} else if (sym!=NULL && sym->documentation!=NULL) {
dvander@27	1531	strcpy(doc,sym->documentation);
dvander@27	1532	strcat(doc,"<p/>");
dvander@27	1533	free(sym->documentation);
dvander@27	1534	sym->documentation=NULL;
dvander@27	1535	} else {
dvander@27	1536	doc[0]='\0';
dvander@27	1537	} /* if */
dvander@27	1538	/* collect all documentation */
dvander@27	1539	while ((str=get_docstring(0))!=NULL && *str!=sDOCSEP) {
dvander@27	1540	if (doc[0]!='\0')
dvander@27	1541	strcat(doc," ");
dvander@27	1542	strcat(doc,str);
dvander@27	1543	delete_docstring(0);
dvander@27	1544	} /* while */
dvander@27	1545	if (str!=NULL) {
dvander@27	1546	/* also delete the separator */
dvander@27	1547	assert(*str==sDOCSEP);
dvander@27	1548	delete_docstring(0);
dvander@27	1549	} /* if */
dvander@27	1550	if (sym!=NULL) {
dvander@27	1551	assert(sym->documentation==NULL);
dvander@27	1552	sym->documentation=doc;
dvander@27	1553	} else {
dvander@27	1554	if (sc_documentation!=NULL)
dvander@27	1555	free(sc_documentation);
dvander@27	1556	sc_documentation=doc;
dvander@27	1557	} /* if */
dvander@27	1558	} /* if */
dvander@27	1559	} else {
dvander@27	1560	/* delete an empty separator, if present */
dvander@27	1561	if ((str=get_docstring(0))!=NULL && *str==sDOCSEP)
dvander@27	1562	delete_docstring(0);
dvander@27	1563	} /* if */
dvander@27	1564	}
dvander@27	1565
dvander@27	1566	static void insert_docstring_separator(void)
dvander@27	1567	{
dvander@27	1568	char sep[2]={sDOCSEP,'\0'};
dvander@27	1569	insert_docstring(sep);
dvander@27	1570	}
dvander@27	1571	#else
dvander@27	1572	#define sc_attachdocumentation(s) (void)(s)
dvander@27	1573	#define insert_docstring_separator()
dvander@27	1574	#endif
dvander@27	1575
dvander@27	1576	static void declfuncvar(int fpublic,int fstatic,int fstock,int fconst)
dvander@27	1577	{
dvander@27	1578	char name[sNAMEMAX+11];
dvander@27	1579	int tok,tag;
dvander@27	1580	char *str;
dvander@27	1581	cell val;
dvander@27	1582	int invalidfunc;
dvander@27	1583
dvander@27	1584	tag=pc_addtag(NULL);
dvander@27	1585	tok=lex(&val,&str);
dvander@27	1586	/* if we arrived here, this may not be a declaration of a native function
dvander@27	1587	* or variable
dvander@27	1588	*/
dvander@27	1589	if (tok==tNATIVE) {
dvander@27	1590	error(42); /* invalid combination of class specifiers */
dvander@27	1591	return;
dvander@27	1592	} /* if */
dvander@27	1593
dvander@27	1594	if (tok!=tSYMBOL && tok!=tOPERATOR) {
dvander@27	1595	lexpush();
dvander@27	1596	needtoken(tSYMBOL);
dvander@27	1597	lexclr(TRUE); /* drop the rest of the line */
dvander@27	1598	litidx=0; /* drop the literal queue too */
dvander@27	1599	return;
dvander@27	1600	} /* if */
dvander@27	1601	if (tok==tOPERATOR) {
dvander@27	1602	lexpush(); /* push "operator" keyword back (for later analysis) */
dvander@27	1603	if (!newfunc(NULL,tag,fpublic,fstatic,fstock)) {
dvander@27	1604	error(10); /* illegal function or declaration */
dvander@27	1605	lexclr(TRUE); /* drop the rest of the line */
dvander@27	1606	litidx=0; /* drop the literal queue too */
dvander@27	1607	} /* if */
dvander@27	1608	} else {
dvander@27	1609	/* so tok is tSYMBOL */
dvander@27	1610	assert(strlen(str)<=sNAMEMAX);
dvander@27	1611	strcpy(name,str);
dvander@27	1612	/* only variables can be "const" or both "public" and "stock" */
dvander@27	1613	invalidfunc= fconst \|\| (fpublic && fstock);
dvander@27	1614	if (invalidfunc \|\| !newfunc(name,tag,fpublic,fstatic,fstock)) {
dvander@27	1615	/* if not a function, try a global variable */
dvander@27	1616	declglb(name,tag,fpublic,fstatic,fstock,fconst);
dvander@27	1617	} /* if */
dvander@27	1618	} /* if */
dvander@27	1619	}
dvander@27	1620
dvander@27	1621	/* declglb - declare global symbols
dvander@27	1622	*
dvander@27	1623	* Declare a static (global) variable. Global variables are stored in
dvander@27	1624	* the DATA segment.
dvander@27	1625	*
dvander@27	1626	* global references: glb_declared (altered)
dvander@27	1627	*/
dvander@27	1628	static void declglb(char *firstname,int firsttag,int fpublic,int fstatic,int fstock,int fconst)
dvander@27	1629	{
dvander@27	1630	int ident,tag,ispublic;
dvander@27	1631	int idxtag[sDIMEN_MAX];
dvander@27	1632	char name[sNAMEMAX+1];
dvander@27	1633	cell val,size,cidx;
dvander@27	1634	ucell address;
dvander@27	1635	int glb_incr;
dvander@27	1636	char *str;
dvander@27	1637	int dim[sDIMEN_MAX];
dvander@27	1638	int numdim;
dvander@27	1639	short filenum;
dvander@27	1640	symbol *sym;
dvander@27	1641	constvalue *enumroot;
dvander@27	1642	#if !defined NDEBUG
dvander@27	1643	cell glbdecl=0;
dvander@27	1644	#endif
dvander@27	1645
dvander@27	1646	assert(!fpublic \|\| !fstatic); /* may not both be set */
dvander@27	1647	insert_docstring_separator(); /* see comment in newfunc() */
dvander@27	1648	filenum=fcurrent; /* save file number at the start of the declaration */
dvander@27	1649	do {
dvander@27	1650	size=1; /* single size (no array) */
dvander@27	1651	numdim=0; /* no dimensions */
dvander@27	1652	ident=iVARIABLE;
dvander@27	1653	if (firstname!=NULL) {
dvander@27	1654	assert(strlen(firstname)<=sNAMEMAX);
dvander@27	1655	strcpy(name,firstname); /* save symbol name */
dvander@27	1656	tag=firsttag;
dvander@27	1657	firstname=NULL;
dvander@27	1658	} else {
dvander@27	1659	tag=pc_addtag(NULL);
dvander@27	1660	if (lex(&val,&str)!=tSYMBOL) /* read in (new) token */
dvander@27	1661	error(20,str); /* invalid symbol name */
dvander@27	1662	assert(strlen(str)<=sNAMEMAX);
dvander@27	1663	strcpy(name,str); /* save symbol name */
dvander@27	1664	} /* if */
dvander@27	1665	ispublic=fpublic;
dvander@27	1666	if (name[0]==PUBLIC_CHAR) {
dvander@27	1667	ispublic=TRUE; /* implicitly public variable */
dvander@27	1668	assert(!fstatic);
dvander@27	1669	} /* if */
dvander@27	1670	while (matchtoken('[')) {
dvander@27	1671	ident=iARRAY;
dvander@27	1672	if (numdim == sDIMEN_MAX) {
dvander@27	1673	error(53); /* exceeding maximum number of dimensions */
dvander@27	1674	return;
dvander@27	1675	} /* if */
dvander@27	1676	size=needsub(&idxtag[numdim],&enumroot); /* get size; size==0 for "var[]" */
dvander@27	1677	#if INT_MAX < LONG_MAX
dvander@27	1678	if (size > INT_MAX)
dvander@27	1679	error(105); /* overflow, exceeding capacity */
dvander@27	1680	#endif
dvander@27	1681	if (ispublic)
dvander@27	1682	error(56,name); /* arrays cannot be public */
dvander@27	1683	dim[numdim++]=(int)size;
dvander@27	1684	} /* while */
dvander@27	1685	assert(sc_curstates==0);
dvander@27	1686	sc_curstates=getstates(name);
dvander@27	1687	if (sc_curstates<0) {
dvander@27	1688	error(85,name); /* empty state list on declaration */
dvander@27	1689	sc_curstates=0;
dvander@27	1690	} else if (sc_curstates>0 && ispublic) {
dvander@27	1691	error(88,name); /* public variables may not have states */
dvander@27	1692	sc_curstates=0;
dvander@27	1693	} /* if */
dvander@27	1694	sym=findconst(name,NULL);
dvander@27	1695	if (sym==NULL) {
dvander@27	1696	sym=findglb(name,sSTATEVAR);
dvander@27	1697	/* if a global variable without states is found and this declaration has
dvander@27	1698	* states, the declaration is okay
dvander@27	1699	*/
dvander@27	1700	if (sym!=NULL && sym->states==NULL && sc_curstates>0)
dvander@27	1701	sym=NULL; /* set to NULL, we found the global variable */
dvander@27	1702	if (sc_curstates>0 && findglb(name,sGLOBAL)!=NULL)
dvander@27	1703	error(233,name); /* state variable shadows a global variable */
dvander@27	1704	} /* if */
dvander@27	1705	/* we have either:
dvander@27	1706	* a) not found a matching variable (or rejected it, because it was a shadow)
dvander@27	1707	* b) found a global variable and we were looking for that global variable
dvander@27	1708	* c) found a state variable in the automaton that we were looking for
dvander@27	1709	*/
dvander@27	1710	assert(sym==NULL
dvander@27	1711	\|\| sym->states==NULL && sc_curstates==0
dvander@27	1712	\|\| sym->states!=NULL && sym->next!=NULL && sym->states->next->index==sc_curstates);
dvander@27	1713	/* a state variable may only have a single id in its list (so either this
dvander@27	1714	* variable has no states, or it has a single list)
dvander@27	1715	*/
dvander@27	1716	assert(sym==NULL \|\| sym->states==NULL \|\| sym->states->next->next==NULL);
dvander@27	1717	/* it is okay for the (global) variable to exist, as long as it belongs to
dvander@27	1718	* a different automaton
dvander@27	1719	*/
dvander@27	1720	if (sym!=NULL && (sym->usage & uDEFINE)!=0)
dvander@27	1721	error(21,name); /* symbol already defined */
dvander@27	1722	/* if this variable is never used (which can be detected only in the
dvander@27	1723	* second stage), shut off code generation
dvander@27	1724	*/
dvander@27	1725	cidx=0; /* only to avoid a compiler warning */
dvander@27	1726	if (sc_status==statWRITE && sym!=NULL && (sym->usage & (uREAD \| uWRITTEN))==0) {
dvander@27	1727	sc_status=statSKIP;
dvander@27	1728	cidx=code_idx;
dvander@27	1729	#if !defined NDEBUG
dvander@27	1730	glbdecl=glb_declared;
dvander@27	1731	#endif
dvander@27	1732	} /* if */
dvander@27	1733	begdseg(); /* real (initialized) data in data segment */
dvander@27	1734	assert(litidx==0); /* literal queue should be empty */
dvander@27	1735	if (sc_alignnext) {
dvander@27	1736	litidx=0;
dvander@27	1737	aligndata(sc_dataalign);
dvander@27	1738	dumplits(); /* dump the literal queue */
dvander@27	1739	sc_alignnext=FALSE;
dvander@27	1740	litidx=0; /* global initial data is dumped, so restart at zero */
dvander@27	1741	} /* if */
dvander@27	1742	assert(litidx==0); /* literal queue should be empty (again) */
dvander@27	1743	initials(ident,tag,&size,dim,numdim,enumroot);/* stores values in the literal queue */
dvander@27	1744	assert(size>=litidx);
dvander@27	1745	if (numdim==1)
dvander@27	1746	dim[0]=(int)size;
dvander@27	1747	/* before dumping the initial values (or zeros) check whether this variable
dvander@27	1748	* overlaps another
dvander@27	1749	*/
dvander@27	1750	if (sc_curstates>0) {
dvander@27	1751	unsigned char *map;
dvander@27	1752
dvander@27	1753	if (litidx!=0)
dvander@27	1754	error(89,name); /* state variables may not be initialized */
dvander@27	1755	/* find an appropriate address for the state variable */
dvander@27	1756	/* assume that it cannot be found */
dvander@27	1757	address=sizeof(cell)*glb_declared;
dvander@27	1758	glb_incr=(int)size;
dvander@27	1759	/* use a memory map in which every cell occupies one bit */
dvander@27	1760	if (glb_declared>0 && (map=(unsigned char*)malloc((glb_declared+7)/8))!=NULL) {
dvander@27	1761	int fsa=state_getfsa(sc_curstates);
dvander@27	1762	symbol *sweep;
dvander@27	1763	cell sweepsize,addr;
dvander@27	1764	memset(map,0,(glb_declared+7)/8);
dvander@27	1765	assert(fsa>=0);
dvander@27	1766	/* fill in all variables belonging to this automaton */
dvander@27	1767	for (sweep=glbtab.next; sweep!=NULL; sweep=sweep->next) {
dvander@27	1768	if (sweep->parent!=NULL \|\| sweep->states==NULL \|\| sweep==sym)
dvander@27	1769	continue; /* hierarchical type, or no states, or same as this variable */
dvander@27	1770	if (sweep->ident!=iVARIABLE && sweep->ident!=iARRAY)
dvander@27	1771	continue; /* a function or a constant */
dvander@27	1772	if ((sweep->usage & uDEFINE)==0)
dvander@27	1773	continue; /* undefined variable, ignore */
dvander@27	1774	if (fsa!=state_getfsa(sweep->states->next->index))
dvander@27	1775	continue; /* wrong automaton */
dvander@27	1776	/* when arrived here, this is a global variable, with states and
dvander@27	1777	* belonging to the same automaton as the variable we are declaring
dvander@27	1778	*/
dvander@27	1779	sweepsize=(sweep->ident==iVARIABLE) ? 1 : array_totalsize(sweep);
dvander@27	1780	assert(sweep->addr % sizeof(cell) == 0);
dvander@27	1781	addr=sweep->addr/sizeof(cell);
dvander@27	1782	/* mark this address range */
dvander@27	1783	while (sweepsize-->0) {
dvander@27	1784	map[addr/8] \|= (unsigned char)(1 << (addr % 8));
dvander@27	1785	addr++;
dvander@27	1786	} /* while */
dvander@27	1787	} /* for */
dvander@27	1788	/* go over it again, clearing any ranges that have conflicts */
dvander@27	1789	for (sweep=glbtab.next; sweep!=NULL; sweep=sweep->next) {
dvander@27	1790	if (sweep->parent!=NULL \|\| sweep->states==NULL \|\| sweep==sym)
dvander@27	1791	continue; /* hierarchical type, or no states, or same as this variable */
dvander@27	1792	if (sweep->ident!=iVARIABLE && sweep->ident!=iARRAY)
dvander@27	1793	continue; /* a function or a constant */
dvander@27	1794	if ((sweep->usage & uDEFINE)==0)
dvander@27	1795	continue; /* undefined variable, ignore */
dvander@27	1796	if (fsa!=state_getfsa(sweep->states->next->index))
dvander@27	1797	continue; /* wrong automaton */
dvander@27	1798	/* when arrived here, this is a global variable, with states and
dvander@27	1799	* belonging to the same automaton as the variable we are declaring
dvander@27	1800	*/
dvander@27	1801	/* if the lists of states of the existing variable and the new
dvander@27	1802	* variable have a non-empty intersection, this is not a suitable
dvander@27	1803	* overlap point -> wipe the address range
dvander@27	1804	*/
dvander@27	1805	if (state_conflict_id(sc_curstates,sweep->states->next->index)) {
dvander@27	1806	sweepsize=(sweep->ident==iVARIABLE) ? 1 : array_totalsize(sweep);
dvander@27	1807	assert(sweep->addr % sizeof(cell) == 0);
dvander@27	1808	addr=sweep->addr/sizeof(cell);
dvander@27	1809	/* mark this address range */
dvander@27	1810	while (sweepsize-->0) {
dvander@27	1811	map[addr/8] &= (unsigned char)(~(1 << (addr % 8)));
dvander@27	1812	addr++;
dvander@27	1813	} /* while */
dvander@27	1814	} /* if */
dvander@27	1815	} /* for */
dvander@27	1816	/* now walk through the map and find a starting point that is big enough */
dvander@27	1817	sweepsize=0;
dvander@27	1818	for (addr=0; addr<glb_declared; addr++) {
dvander@27	1819	if ((map[addr/8] & (1 << (addr % 8)))==0)
dvander@27	1820	continue;
dvander@27	1821	for (sweepsize=addr+1; sweepsize<glb_declared; sweepsize++) {
dvander@27	1822	if ((map[sweepsize/8] & (1 << (sweepsize % 8)))==0)
dvander@27	1823	break; /* zero bit found, skip this range */
dvander@27	1824	if (sweepsize-addr>=size)
dvander@27	1825	break; /* fitting range found, no need to search further */
dvander@27	1826	} /* for */
dvander@27	1827	if (sweepsize-addr>=size)
dvander@27	1828	break; /* fitting range found, no need to search further */
dvander@27	1829	addr=sweepsize;
dvander@27	1830	} /* for */
dvander@27	1831	free(map);
dvander@27	1832	if (sweepsize-addr>=size) {
dvander@27	1833	address=sizeof(cell)addr; / fitting range found, set it */
dvander@27	1834	glb_incr=0;
dvander@27	1835	} /* if */
dvander@27	1836	} /* if */
dvander@27	1837	} else {
dvander@27	1838	address=sizeof(cell)*glb_declared;
dvander@27	1839	glb_incr=(int)size;
dvander@27	1840	} /* if */
dvander@27	1841	if (address==sizeof(cell)*glb_declared) {
dvander@27	1842	dumplits(); /* dump the literal queue */
dvander@27	1843	dumpzero((int)size-litidx);
dvander@27	1844	} /* if */
dvander@27	1845	litidx=0;
dvander@27	1846	if (sym==NULL) { /* define only if not yet defined */
dvander@27	1847	sym=addvariable(name,address,ident,sGLOBAL,tag,dim,numdim,idxtag);
dvander@27	1848	if (sc_curstates>0)
dvander@27	1849	attachstatelist(sym,sc_curstates);
dvander@27	1850	} else { /* if declared but not yet defined, adjust the variable's address */
dvander@27	1851	assert(sym->states==NULL && sc_curstates==0
dvander@27	1852	\|\| sym->states->next!=NULL && sym->states->next->index==sc_curstates && sym->states->next->next==NULL);
dvander@27	1853	sym->addr=address;
dvander@27	1854	sym->codeaddr=code_idx;
dvander@27	1855	sym->usage\|=uDEFINE;
dvander@27	1856	} /* if */
dvander@27	1857	assert(sym!=NULL);
dvander@27	1858	sc_curstates=0;
dvander@27	1859	if (ispublic)
dvander@27	1860	sym->usage\|=uPUBLIC;
dvander@27	1861	if (fconst)
dvander@27	1862	sym->usage\|=uCONST;
dvander@27	1863	if (fstock)
dvander@27	1864	sym->usage\|=uSTOCK;
dvander@27	1865	if (fstatic)
dvander@27	1866	sym->fnumber=filenum;
dvander@27	1867	sc_attachdocumentation(sym);/* attach any documenation to the variable */
dvander@27	1868	if (sc_status==statSKIP) {
dvander@27	1869	sc_status=statWRITE;
dvander@27	1870	code_idx=cidx;
dvander@27	1871	assert(glb_declared==glbdecl);
dvander@27	1872	} else {
dvander@27	1873	glb_declared+=glb_incr; /* add total number of cells (if added to the end) */
dvander@27	1874	} /* if */
dvander@27	1875	} while (matchtoken(',')); /* enddo / / more? */
dvander@27	1876	needtoken(tTERM); /* if not comma, must be semicolumn */
dvander@27	1877	}
dvander@27	1878
dvander@27	1879	/* declloc - declare local symbols
dvander@27	1880	*
dvander@27	1881	* Declare local (automatic) variables. Since these variables are relative
dvander@27	1882	* to the STACK, there is no switch to the DATA segment. These variables
dvander@27	1883	* cannot be initialized either.
dvander@27	1884	*
dvander@27	1885	* global references: declared (altered)
dvander@27	1886	* funcstatus (referred to only)
dvander@27	1887	*/
dvander@27	1888	static int declloc(int fstatic)
dvander@27	1889	{
dvander@27	1890	int ident,tag;
dvander@27	1891	int idxtag[sDIMEN_MAX];
dvander@27	1892	char name[sNAMEMAX+1];
dvander@27	1893	symbol *sym;
dvander@27	1894	constvalue *enumroot;
dvander@27	1895	cell val,size;
dvander@27	1896	char *str;
dvander@27	1897	value lval = {0};
dvander@27	1898	int cur_lit=0;
dvander@27	1899	int dim[sDIMEN_MAX];
dvander@27	1900	int numdim;
dvander@27	1901	int fconst;
dvander@27	1902	int staging_start;
dvander@27	1903
dvander@27	1904	fconst=matchtoken(tCONST);
dvander@27	1905	do {
dvander@27	1906	ident=iVARIABLE;
dvander@27	1907	size=1;
dvander@27	1908	numdim=0; /* no dimensions */
dvander@27	1909	tag=pc_addtag(NULL);
dvander@27	1910	if (lex(&val,&str)!=tSYMBOL) /* read in (new) token */
dvander@27	1911	error(20,str); /* invalid symbol name */
dvander@27	1912	assert(strlen(str)<=sNAMEMAX);
dvander@27	1913	strcpy(name,str); /* save symbol name */
dvander@27	1914	if (name[0]==PUBLIC_CHAR)
dvander@27	1915	error(56,name); /* local variables cannot be public */
dvander@27	1916	/* Note: block locals may be named identical to locals at higher
dvander@27	1917	* compound blocks (as with standard C); so we must check (and add)
dvander@27	1918	* the "nesting level" of local variables to verify the
dvander@27	1919	* multi-definition of symbols.
dvander@27	1920	*/
dvander@27	1921	if ((sym=findloc(name))!=NULL && sym->compound==nestlevel)
dvander@27	1922	error(21,name); /* symbol already defined */
dvander@27	1923	/* Although valid, a local variable whose name is equal to that
dvander@27	1924	* of a global variable or to that of a local variable at a lower
dvander@27	1925	* level might indicate a bug.
dvander@27	1926	*/
dvander@27	1927	if ((sym=findloc(name))!=NULL && sym->compound!=nestlevel \|\| findglb(name,sGLOBAL)!=NULL)
dvander@27	1928	error(219,name); /* variable shadows another symbol */
dvander@27	1929	while (matchtoken('[')){
dvander@27	1930	ident=iARRAY;
dvander@27	1931	if (numdim == sDIMEN_MAX) {
dvander@27	1932	error(53); /* exceeding maximum number of dimensions */
dvander@27	1933	return ident;
dvander@27	1934	} /* if */
dvander@27	1935	size=needsub(&idxtag[numdim],&enumroot); /* get size; size==0 for "var[]" */
dvander@27	1936	#if INT_MAX < LONG_MAX
dvander@27	1937	if (size > INT_MAX)
dvander@27	1938	error(105); /* overflow, exceeding capacity */
dvander@27	1939	#endif
dvander@27	1940	dim[numdim++]=(int)size;
dvander@27	1941	} /* while */
dvander@27	1942	if (getstates(name))
dvander@27	1943	error(88,name); /* local variables may not have states */
dvander@27	1944	if (ident==iARRAY \|\| fstatic) {
dvander@27	1945	if (sc_alignnext) {
dvander@27	1946	aligndata(sc_dataalign);
dvander@27	1947	sc_alignnext=FALSE;
dvander@27	1948	} /* if */
dvander@27	1949	cur_lit=litidx; /* save current index in the literal table */
dvander@27	1950	initials(ident,tag,&size,dim,numdim,enumroot);
dvander@27	1951	if (size==0)
dvander@27	1952	return ident; /* error message already given */
dvander@27	1953	if (numdim==1)
dvander@27	1954	dim[0]=(int)size;
dvander@27	1955	} /* if */
dvander@27	1956	/* reserve memory (on the stack) for the variable */
dvander@27	1957	if (fstatic) {
dvander@27	1958	/* write zeros for uninitialized fields */
dvander@27	1959	while (litidx<cur_lit+size)
dvander@27	1960	litadd(0);
dvander@27	1961	sym=addvariable(name,(cur_lit+glb_declared)*sizeof(cell),ident,sSTATIC,
dvander@27	1962	tag,dim,numdim,idxtag);
dvander@27	1963	} else {
dvander@27	1964	declared+=(int)size; /* variables are put on stack, adjust "declared" */
dvander@27	1965	sym=addvariable(name,-declared*sizeof(cell),ident,sLOCAL,tag,
dvander@27	1966	dim,numdim,idxtag);
dvander@27	1967	if (ident==iVARIABLE) {
dvander@27	1968	assert(!staging);
dvander@27	1969	stgset(TRUE); /* start stage-buffering */
dvander@27	1970	assert(stgidx==0);
dvander@27	1971	staging_start=stgidx;
dvander@27	1972	} /* if */
dvander@27	1973	markexpr(sLDECL,name,-declaredsizeof(cell)); / mark for better optimization */
dvander@27	1974	modstk(-(int)size*sizeof(cell));
dvander@117	1975	markstack(MEMUSE_STATIC, size);
dvander@27	1976	assert(curfunc!=NULL);
dvander@27	1977	assert((curfunc->usage & uNATIVE)==0);
dvander@27	1978	if (curfunc->x.stacksize<declared+1)
dvander@27	1979	curfunc->x.stacksize=declared+1; /* +1 for PROC opcode */
dvander@27	1980	} /* if */
dvander@27	1981	/* now that we have reserved memory for the variable, we can proceed
dvander@27	1982	* to initialize it */
dvander@27	1983	assert(sym!=NULL); /* we declared it, it must be there */
dvander@27	1984	sym->compound=nestlevel; /* for multiple declaration/shadowing check */
dvander@27	1985	if (fconst)
dvander@27	1986	sym->usage\|=uCONST;
dvander@27	1987	if (!fstatic) { /* static variables already initialized */
dvander@27	1988	if (ident==iVARIABLE) {
dvander@27	1989	/* simple variable, also supports initialization */
dvander@27	1990	int ctag = tag; /* set to "tag" by default */
dvander@27	1991	int explicit_init=FALSE;/* is the variable explicitly initialized? */
dvander@27	1992	if (matchtoken('=')) {
dvander@27	1993	if (!autozero)
dvander@27	1994	error(10);
dvander@27	1995	doexpr(FALSE,FALSE,FALSE,FALSE,&ctag,NULL,TRUE);
dvander@27	1996	explicit_init=TRUE;
dvander@27	1997	} else {
dvander@27	1998	if (autozero)
dvander@27	1999	ldconst(0,sPRI); /* uninitialized variable, set to zero */
dvander@27	2000	} /* if */
dvander@27	2001	if (autozero) {
dvander@27	2002	/* now try to save the value (still in PRI) in the variable */
dvander@27	2003	lval.sym=sym;
dvander@27	2004	lval.ident=iVARIABLE;
dvander@27	2005	lval.constval=0;
dvander@27	2006	lval.tag=tag;
dvander@27	2007	check_userop(NULL,ctag,lval.tag,2,NULL,&ctag);
dvander@27	2008	store(&lval);
dvander@27	2009	markexpr(sEXPR,NULL,0); /* full expression ends after the store */
dvander@27	2010	}
dvander@27	2011	assert(staging); /* end staging phase (optimize expression) */
dvander@27	2012	stgout(staging_start);
dvander@27	2013	stgset(FALSE);
dvander@27	2014	if (!matchtag(tag,ctag,TRUE))
dvander@27	2015	error(213); /* tag mismatch */
dvander@27	2016	/* if the variable was not explicitly initialized, reset the
dvander@27	2017	* "uWRITTEN" flag that store() set */
dvander@27	2018	if (!explicit_init)
dvander@27	2019	sym->usage &= ~uWRITTEN;
dvander@27	2020	} else {
dvander@27	2021	/* an array */
dvander@27	2022	assert(cur_lit>=0 && cur_lit<=litidx && litidx<=litmax);
dvander@27	2023	assert(size>0 && size>=sym->dim.array.length);
dvander@27	2024	assert(numdim>1 \|\| size==sym->dim.array.length);
dvander@27	2025	if (autozero) {
dvander@27	2026	/* final literal values that are zero make no sense to put in the literal
dvander@27	2027	* pool, because values get zero-initialized anyway; we check for this,
dvander@27	2028	* because users often explicitly initialize strings to ""
dvander@27	2029	*/
dvander@27	2030	while (litidx>cur_lit && litq[litidx-1]==0)
dvander@27	2031	litidx--;
dvander@27	2032	/* if the array is not completely filled, set all values to zero first */
dvander@27	2033	if (litidx-cur_lit<size && (ucell)size<CELL_MAX)
dvander@27	2034	fillarray(sym,size*sizeof(cell),0);
dvander@27	2035	}
dvander@27	2036	if (cur_lit<litidx) {
dvander@27	2037	/* check whether the complete array is set to a single value; if
dvander@27	2038	* it is, more compact code can be generated */
dvander@27	2039	cell first=litq[cur_lit];
dvander@27	2040	int i;
dvander@27	2041	for (i=cur_lit; i<litidx && litq[i]==first; i++)
dvander@27	2042	/* nothing */;
dvander@27	2043	if (i==litidx) {
dvander@27	2044	/* all values are the same */
dvander@27	2045	fillarray(sym,(litidx-cur_lit)*sizeof(cell),first);
dvander@27	2046	litidx=cur_lit; /* reset literal table */
dvander@27	2047	} else {
dvander@27	2048	/* copy the literals to the array */
dvander@27	2049	ldconst((cur_lit+glb_declared)*sizeof(cell),sPRI);
dvander@27	2050	copyarray(sym,(litidx-cur_lit)*sizeof(cell));
dvander@27	2051	} /* if */
dvander@27	2052	} /* if */
dvander@27	2053	} /* if */
dvander@27	2054	} /* if */
dvander@27	2055	} while (matchtoken(',')); /* enddo / / more? */
dvander@27	2056	needtoken(tTERM); /* if not comma, must be semicolumn */
dvander@27	2057	return ident;
dvander@27	2058	}
dvander@27	2059
dvander@27	2060	/* this function returns the maximum value for a cell in case of an error
dvander@27	2061	* (invalid dimension).
dvander@27	2062	*/
dvander@27	2063	static cell calc_arraysize(int dim[],int numdim,int cur)
dvander@27	2064	{
dvander@27	2065	cell subsize;
dvander@27	2066	ucell newsize;
dvander@27	2067
dvander@27	2068	/* the return value is in cells, not bytes */
dvander@27	2069	assert(cur>=0 && cur<=numdim);
dvander@27	2070	if (cur==numdim)
dvander@27	2071	return 0;
dvander@27	2072	subsize=calc_arraysize(dim,numdim,cur+1);
dvander@27	2073	newsize=dim[cur]+dim[cur]*subsize;
dvander@27	2074	if ((ucell)subsize>=CELL_MAX \|\| newsize>=CELL_MAX \|\| newsize<(ucell)subsize
dvander@27	2075	\|\| newsize*sizeof(cell)>=CELL_MAX)
dvander@27	2076	return CELL_MAX;
dvander@27	2077	return newsize;
dvander@27	2078	}
dvander@27	2079
dvander@27	2080	static cell adjust_indirectiontables(int dim[],int numdim,int cur,cell increment,
dvander@27	2081	int startlit,constvalue lastdim,int skipdim)
dvander@27	2082	{
dvander@27	2083	static int base;
dvander@27	2084	int d;
dvander@27	2085	cell accum;
dvander@27	2086
dvander@27	2087	assert(cur>=0 && cur<numdim);
dvander@27	2088	assert(increment>=0);
dvander@27	2089	assert(cur>0 && startlit==-1 \|\| startlit>=0 && startlit<=litidx);
dvander@27	2090	if (cur==0)
dvander@27	2091	base=startlit;
dvander@27	2092	if (cur==numdim-1)
dvander@27	2093	return 0;
dvander@27	2094	/* 2 or more dimensions left, fill in an indirection vector */
dvander@27	2095	assert(dim[cur]>0);
dvander@27	2096	if (dim[cur+1]>0) {
dvander@27	2097	for (d=0; d<dim[cur]; d++)
dvander@27	2098	litq[base++]=(dim[cur]+d(dim[cur+1]-1)+increment) sizeof(cell);
dvander@27	2099	accum=dim[cur]*(dim[cur+1]-1);
dvander@27	2100	} else {
dvander@27	2101	/* final dimension is variable length */
dvander@27	2102	constvalue *ld;
dvander@27	2103	assert(dim[cur+1]==0);
dvander@27	2104	assert(lastdim!=NULL);
dvander@27	2105	assert(skipdim!=NULL);
dvander@27	2106	accum=0;
dvander@27	2107	/* skip the final dimension sizes for all earlier major dimensions */
dvander@27	2108	for (d=0,ld=lastdim->next; d<*skipdim; d++,ld=ld->next) {
dvander@27	2109	assert(ld!=NULL);
dvander@27	2110	} /* for */
dvander@27	2111	for (d=0; d<dim[cur]; d++) {
dvander@27	2112	assert(ld!=NULL);
dvander@27	2113	assert(strtol(ld->name,NULL,16)==d);
dvander@27	2114	litq[base++]=(dim[cur]+accum+increment) * sizeof(cell);
dvander@27	2115	accum+=ld->value-1;
dvander@27	2116	*skipdim+=1;
dvander@27	2117	ld=ld->next;
dvander@27	2118	} /* for */
dvander@27	2119	} /* if */
dvander@27	2120	/* create the indirection tables for the lower level */
dvander@27	2121	if (cur+2<numdim) { /* are there at least 2 dimensions below this one? */
dvander@27	2122	increment+=(dim[cur]-1)dim[cur+1]; / this many indirection tables follow */
dvander@27	2123	for (d=0; d<dim[cur]; d++)
dvander@27	2124	increment+=adjust_indirectiontables(dim,numdim,cur+1,increment,-1,lastdim,skipdim);
dvander@27	2125	} /* if */
dvander@27	2126	return accum;
dvander@27	2127	}
dvander@27	2128
dvander@27	2129	/* initials
dvander@27	2130	*
dvander@27	2131	* Initialize global objects and local arrays.
dvander@27	2132	* size==array cells (count), if 0 on input, the routine counts the number of elements
dvander@27	2133	* tag==required tagname id (not the returned tag)
dvander@27	2134	*
dvander@27	2135	* Global references: litidx (altered)
dvander@27	2136	*/
dvander@27	2137	static void initials(int ident,int tag,cell *size,int dim[],int numdim,
dvander@27	2138	constvalue *enumroot)
dvander@27	2139	{
dvander@27	2140	int ctag;
dvander@27	2141	cell tablesize;
dvander@27	2142	int curlit=litidx;
dvander@27	2143	int err=0;
dvander@27	2144
dvander@27	2145	if (!matchtoken('=')) {
dvander@27	2146	assert(ident!=iARRAY \|\| numdim>0);
dvander@27	2147	if (ident==iARRAY && dim[numdim-1]==0) {
dvander@27	2148	/* declared as "myvar[];" which is senseless (note: this does make
dvander@27	2149	* sense in the case of a iREFARRAY, which is a function parameter)
dvander@27	2150	*/
dvander@27	2151	error(9); /* array has zero length -> invalid size */
dvander@27	2152	} /* if */
dvander@27	2153	if (ident==iARRAY) {
dvander@27	2154	assert(numdim>0 && numdim<=sDIMEN_MAX);
dvander@27	2155	*size=calc_arraysize(dim,numdim,0);
dvander@27	2156	if (*size==(cell)CELL_MAX) {
dvander@27	2157	error(9); /* array is too big -> invalid size */
dvander@27	2158	return;
dvander@27	2159	} /* if */
dvander@27	2160	/* first reserve space for the indirection vectors of the array, then
dvander@27	2161	* adjust it to contain the proper values
dvander@27	2162	* (do not use dumpzero(), as it bypasses the literal queue)
dvander@27	2163	*/
dvander@27	2164	for (tablesize=calc_arraysize(dim,numdim-1,0); tablesize>0; tablesize--)
dvander@27	2165	litadd(0);
dvander@27	2166	if (dim[numdim-1]!=0) /* error 9 has already been given */
dvander@27	2167	adjust_indirectiontables(dim,numdim,0,0,curlit,NULL,NULL);
dvander@27	2168	} /* if */
dvander@27	2169	return;
dvander@27	2170	} /* if */
dvander@27	2171
dvander@27	2172	if (ident==iVARIABLE) {
dvander@27	2173	assert(*size==1);
dvander@27	2174	init(ident,&ctag,NULL);
dvander@27	2175	if (!matchtag(tag,ctag,TRUE))
dvander@27	2176	error(213); /* tag mismatch */
dvander@27	2177	} else {
dvander@27	2178	assert(numdim>0);
dvander@27	2179	if (numdim==1) {
dvander@27	2180	*size=initvector(ident,tag,dim[0],FALSE,enumroot,NULL);
dvander@27	2181	} else {
dvander@27	2182	int errorfound=FALSE;
dvander@27	2183	int counteddim[sDIMEN_MAX];
dvander@27	2184	int idx;
dvander@27	2185	constvalue lastdim={NULL,"",0,0}; /* sizes of the final dimension */
dvander@27	2186	int skipdim=0;
dvander@27	2187
dvander@27	2188	if (dim[numdim-1]!=0)
dvander@27	2189	size=calc_arraysize(dim,numdim,0); / calc. full size, if known */
dvander@27	2190	/* already reserve space for the indirection tables (for an array with
dvander@27	2191	* known dimensions)
dvander@27	2192	* (do not use dumpzero(), as it bypasses the literal queue)
dvander@27	2193	*/
dvander@27	2194	for (tablesize=calc_arraysize(dim,numdim-1,0); tablesize>0; tablesize--)
dvander@27	2195	litadd(0);
dvander@27	2196	/* now initialize the sub-arrays */
dvander@27	2197	memset(counteddim,0,sizeof counteddim);
dvander@27	2198	initarray(ident,tag,dim,numdim,0,curlit,counteddim,&lastdim,enumroot,&errorfound);
dvander@27	2199	/* check the specified array dimensions with the initialler counts */
dvander@27	2200	for (idx=0; idx<numdim-1; idx++) {
dvander@27	2201	if (dim[idx]==0) {
dvander@27	2202	dim[idx]=counteddim[idx];
dvander@27	2203	} else if (counteddim[idx]<dim[idx]) {
dvander@27	2204	error(52); /* array is not fully initialized */
dvander@27	2205	err++;
dvander@27	2206	} else if (counteddim[idx]>dim[idx]) {
dvander@27	2207	error(18); /* initialization data exceeds declared size */
dvander@27	2208	err++;
dvander@27	2209	} /* if */
dvander@27	2210	} /* for */
faluco@62	2211	if (numdim>1 && dim[numdim-1]==0) {
faluco@62	2212	/* also look whether, by any chance, all "counted" final dimensions are
faluco@62	2213	* the same value; if so, we can store this
faluco@62	2214	*/
faluco@62	2215	constvalue *ld=lastdim.next;
faluco@62	2216	int d,match;
faluco@62	2217	for (d=0; d<dim[numdim-2]; d++) {
faluco@62	2218	assert(ld!=NULL);
faluco@62	2219	assert(strtol(ld->name,NULL,16)==d);
faluco@62	2220	if (d==0)
faluco@62	2221	match=ld->value;
faluco@62	2222	else if (match!=ld->value)
faluco@62	2223	break;
faluco@62	2224	ld=ld->next;
faluco@62	2225	} /* for */
faluco@62	2226	if (d==dim[numdim-2])
faluco@62	2227	dim[numdim-1]=match;
faluco@62	2228	} /* if */
dvander@27	2229	/* after all arrays have been initalized, we know the (major) dimensions
dvander@27	2230	* of the array and we can properly adjust the indirection vectors
dvander@27	2231	*/
dvander@27	2232	if (err==0)
dvander@27	2233	adjust_indirectiontables(dim,numdim,0,0,curlit,&lastdim,&skipdim);
dvander@27	2234	delete_consttable(&lastdim); /* clear list of minor dimension sizes */
dvander@27	2235	} /* if */
dvander@27	2236	} /* if */
dvander@27	2237
dvander@27	2238	if (*size==0)
dvander@27	2239	size=litidx-curlit; / number of elements defined */
dvander@27	2240	}
dvander@27	2241
dvander@27	2242	static cell initarray(int ident,int tag,int dim[],int numdim,int cur,
dvander@27	2243	int startlit,int counteddim[],constvalue *lastdim,
dvander@27	2244	constvalue enumroot,int errorfound)
dvander@27	2245	{
dvander@27	2246	cell dsize,totalsize;
dvander@27	2247	int idx,abortparse;
dvander@27	2248
dvander@27	2249	assert(cur>=0 && cur<numdim);
dvander@27	2250	assert(startlit>=0);
dvander@27	2251	assert(cur+2<=numdim);/* there must be 2 dimensions or more to do */
dvander@27	2252	assert(errorfound!=NULL && *errorfound==FALSE);
dvander@27	2253	totalsize=0;
dvander@27	2254	needtoken('{');
dvander@27	2255	for (idx=0,abortparse=FALSE; !abortparse; idx++) {
dvander@27	2256	/* In case the major dimension is zero, we need to store the offset
dvander@27	2257	* to the newly detected sub-array into the indirection table; i.e.
dvander@27	2258	* this table needs to be expanded and updated.
dvander@27	2259	* In the current design, the indirection vectors for a multi-dimensional
dvander@27	2260	* array are adjusted after parsing all initiallers. Hence, it is only
dvander@27	2261	* necessary at this point to reserve space for an extra cell in the
dvander@27	2262	* indirection vector.
dvander@27	2263	*/
dvander@27	2264	if (dim[cur]==0) {
dvander@27	2265	litinsert(0,startlit);
dvander@27	2266	} else if (idx>=dim[cur]) {
dvander@27	2267	error(18); /* initialization data exceeds array size */
dvander@27	2268	break;
dvander@27	2269	} /* if */
dvander@27	2270	if (cur+2<numdim) {
dvander@27	2271	dsize=initarray(ident,tag,dim,numdim,cur+1,startlit,counteddim,
dvander@27	2272	lastdim,enumroot,errorfound);
dvander@27	2273	} else {
dvander@27	2274	dsize=initvector(ident,tag,dim[cur+1],TRUE,enumroot,errorfound);
dvander@27	2275	/* The final dimension may be variable length. We need to keep the
dvander@27	2276	* lengths of the final dimensions in order to set the indirection
dvander@27	2277	* vectors for the next-to-last dimension.
dvander@27	2278	*/
dvander@27	2279	append_constval(lastdim,itoh(idx),dsize,0);
dvander@27	2280	} /* if */
dvander@27	2281	totalsize+=dsize;
dvander@27	2282	if (*errorfound \|\| !matchtoken(','))
dvander@27	2283	abortparse=TRUE;
dvander@27	2284	} /* for */
dvander@27	2285	needtoken('}');
dvander@27	2286	assert(counteddim!=NULL);
dvander@27	2287	if (counteddim[cur]>0) {
dvander@27	2288	if (idx<counteddim[cur])
dvander@27	2289	error(52); /* array is not fully initialized */
dvander@27	2290	else if (idx>counteddim[cur])
dvander@27	2291	error(18); /* initialization data exceeds declared size */
dvander@27	2292	} /* if */
dvander@27	2293	counteddim[cur]=idx;
dvander@27	2294
dvander@27	2295	return totalsize+dim[cur]; /* size of sub-arrays + indirection vector */
dvander@27	2296	}
dvander@27	2297
dvander@27	2298	/* initvector
dvander@27	2299	* Initialize a single dimensional array
dvander@27	2300	*/
dvander@27	2301	static cell initvector(int ident,int tag,cell size,int fillzero,
dvander@27	2302	constvalue enumroot,int errorfound)
dvander@27	2303	{
dvander@27	2304	cell prev1=0,prev2=0;
dvander@27	2305	int ellips=FALSE,hadtoken=0;
dvander@27	2306	int curlit=litidx;
dvander@27	2307	int rtag,ctag;
dvander@27	2308
dvander@27	2309	assert(ident==iARRAY \|\| ident==iREFARRAY);
dvander@27	2310	if ((hadtoken=matchtoken('{')) && autozero) {
dvander@27	2311	constvalue *enumfield=(enumroot!=NULL) ? enumroot->next : NULL;
dvander@27	2312	do {
dvander@27	2313	int fieldlit=litidx;
dvander@27	2314	int matchbrace,i;
dvander@27	2315	if (matchtoken('}')) { /* to allow for trailing ',' after the initialization */
dvander@27	2316	lexpush();
dvander@27	2317	break;
dvander@27	2318	} /* if */
dvander@27	2319	if ((ellips=matchtoken(tELLIPS))!=0)
dvander@27	2320	break;
dvander@27	2321	/* for enumeration fields, allow another level of braces ("{...}") */
dvander@27	2322	matchbrace=0; /* preset */
dvander@27	2323	ellips=0;
dvander@27	2324	if (enumfield!=NULL)
dvander@27	2325	matchbrace=matchtoken('{');
dvander@27	2326	for ( ;; ) {
dvander@27	2327	prev2=prev1;
dvander@27	2328	prev1=init(ident,&ctag,errorfound);
dvander@27	2329	if (!matchbrace)
dvander@27	2330	break;
dvander@27	2331	if ((ellips=matchtoken(tELLIPS))!=0)
dvander@27	2332	break;
dvander@27	2333	if (!matchtoken(',')) {
dvander@27	2334	needtoken('}');
dvander@27	2335	break;
dvander@27	2336	} /* for */
dvander@27	2337	} /* for */
dvander@27	2338	/* if this array is based on an enumeration, fill the "field" up with
dvander@27	2339	* zeros, and toggle the tag
dvander@27	2340	*/
dvander@27	2341	if (enumroot!=NULL && enumfield==NULL)
dvander@27	2342	error(227); /* more initiallers than enum fields */
dvander@27	2343	rtag=tag; /* preset, may be overridden by enum field tag */
dvander@27	2344	if (enumfield!=NULL) {
dvander@27	2345	cell step;
dvander@27	2346	int cmptag=enumfield->index;
dvander@27	2347	symbol *symfield=findconst(enumfield->name,&cmptag);
dvander@27	2348	if (cmptag>1)
dvander@27	2349	error(91,enumfield->name); /* ambiguous constant, needs tag override */
dvander@27	2350	assert(symfield!=NULL);
dvander@27	2351	assert(fieldlit<litidx);
dvander@27	2352	if (litidx-fieldlit>symfield->dim.array.length)
dvander@27	2353	error(228); /* length of initialler exceeds size of the enum field */
dvander@27	2354	if (ellips) {
dvander@27	2355	step=prev1-prev2;
dvander@27	2356	} else {
dvander@27	2357	step=0;
dvander@27	2358	prev1=0;
dvander@27	2359	} /* if */
dvander@27	2360	for (i=litidx-fieldlit; i<symfield->dim.array.length; i++) {
dvander@27	2361	prev1+=step;
dvander@27	2362	litadd(prev1);
dvander@27	2363	} /* for */
dvander@27	2364	rtag=symfield->x.tags.index; /* set the expected tag to the index tag */
dvander@27	2365	enumfield=enumfield->next;
dvander@27	2366	} /* if */
dvander@27	2367	if (!matchtag(rtag,ctag,TRUE))
dvander@27	2368	error(213); /* tag mismatch */
dvander@27	2369	} while (matchtoken(',')); /* do */
dvander@27	2370	needtoken('}');
dvander@27	2371	} else {
faluco@28	2372	if (hadtoken && !autozero) {
dvander@27	2373	error(10);
faluco@28	2374	lexclr(TRUE); /* drop the rest of the line */
faluco@28	2375	return 0;
faluco@28	2376	}
dvander@27	2377	init(ident,&ctag,errorfound);
dvander@27	2378	if (!matchtag(tag,ctag,TRUE))
dvander@27	2379	error(213); /* tagname mismatch */
dvander@27	2380	} /* if */
dvander@27	2381	/* fill up the literal queue with a series */
dvander@27	2382	if (ellips) {
dvander@27	2383	cell step=((litidx-curlit)==1) ? (cell)0 : prev1-prev2;
dvander@27	2384	if (size==0 \|\| (litidx-curlit)==0)
dvander@27	2385	error(41); /* invalid ellipsis, array size unknown */
dvander@27	2386	else if ((litidx-curlit)==(int)size)
dvander@27	2387	error(18); /* initialisation data exceeds declared size */
dvander@27	2388	while ((litidx-curlit)<(int)size) {
dvander@27	2389	prev1+=step;
dvander@27	2390	litadd(prev1);
dvander@27	2391	} /* while */
dvander@27	2392	} /* if */
dvander@27	2393	if (fillzero && size>0) {
dvander@27	2394	while ((litidx-curlit)<(int)size)
dvander@27	2395	litadd(0);
dvander@27	2396	} /* if */
dvander@27	2397	if (size==0) {
dvander@27	2398	size=litidx-curlit; /* number of elements defined */
dvander@27	2399	} else if (litidx-curlit>(int)size) { /* e.g. "myvar[3]={1,2,3,4};" */
dvander@27	2400	error(18); /* initialisation data exceeds declared size */
dvander@27	2401	litidx=(int)size+curlit; /* avoid overflow in memory moves */
dvander@27	2402	} /* if */
dvander@27	2403	return size;
dvander@27	2404	}
dvander@27	2405
dvander@27	2406	/* init
dvander@27	2407	*
dvander@27	2408	* Evaluate one initializer.
dvander@27	2409	*/
dvander@27	2410	static cell init(int ident,int tag,int errorfound)
dvander@27	2411	{
dvander@27	2412	cell i = 0;
dvander@27	2413
dvander@27	2414	if (matchtoken(tSTRING)){
dvander@27	2415	/* lex() automatically stores strings in the literal table (and
dvander@27	2416	* increases "litidx") */
dvander@27	2417	if (ident==iVARIABLE) {
dvander@27	2418	error(6); /* must be assigned to an array */
dvander@27	2419	litidx=1; /* reset literal queue */
dvander@27	2420	} /* if */
dvander@27	2421	*tag=0;
dvander@27	2422	} else if (constexpr(&i,tag,NULL)){
dvander@27	2423	litadd(i); /* store expression result in literal table */
dvander@27	2424	} else {
dvander@27	2425	if (errorfound!=NULL)
dvander@27	2426	*errorfound=TRUE;
dvander@27	2427	} /* if */
dvander@27	2428	return i;
dvander@27	2429	}
dvander@27	2430
dvander@27	2431	/* needsub
dvander@27	2432	*
dvander@27	2433	* Get required array size
dvander@27	2434	*/
dvander@27	2435	static cell needsub(int tag,constvalue *enumroot)
dvander@27	2436	{
dvander@27	2437	cell val;
dvander@27	2438	symbol *sym;
dvander@27	2439
dvander@27	2440	assert(tag!=NULL);
dvander@27	2441	*tag=0;
dvander@27	2442	if (enumroot!=NULL)
dvander@27	2443	enumroot=NULL; / preset */
dvander@27	2444	if (matchtoken(']')) /* we have already seen "[" */
dvander@27	2445	return 0; /* zero size (like "char msg[]") */
dvander@27	2446
dvander@27	2447	constexpr(&val,tag,&sym); /* get value (must be constant expression) */
dvander@27	2448	if (val<0) {
dvander@27	2449	error(9); /* negative array size is invalid; assumed zero */
dvander@27	2450	val=0;
dvander@27	2451	} /* if */
dvander@27	2452	needtoken(']');
dvander@27	2453
dvander@27	2454	if (enumroot!=NULL) {
dvander@27	2455	/* get the field list for an enumeration */
dvander@27	2456	assert(enumroot==NULL);/ should have been preset */
dvander@27	2457	assert(sym==NULL \|\| sym->ident==iCONSTEXPR);
dvander@27	2458	if (sym!=NULL && (sym->usage & uENUMROOT)==uENUMROOT) {
dvander@27	2459	assert(sym->dim.enumlist!=NULL);
dvander@27	2460	*enumroot=sym->dim.enumlist;
dvander@27	2461	} /* if */
dvander@27	2462	} /* if */
dvander@27	2463
dvander@27	2464	return val; /* return array size */
dvander@27	2465	}
dvander@27	2466
dvander@27	2467	/* decl_const - declare a single constant
dvander@27	2468	*
dvander@27	2469	*/
dvander@27	2470	static void decl_const(int vclass)
dvander@27	2471	{
dvander@27	2472	char constname[sNAMEMAX+1];
dvander@27	2473	cell val;
dvander@27	2474	char *str;
dvander@27	2475	int tag,exprtag;
dvander@27	2476	int symbolline;
dvander@27	2477	symbol *sym;
dvander@27	2478
faluco@62	2479	insert_docstring_separator(); /* see comment in newfunc() */
faluco@62	2480	do {
faluco@62	2481	tag=pc_addtag(NULL);
faluco@62	2482	if (lex(&val,&str)!=tSYMBOL) /* read in (new) token */
faluco@62	2483	error(20,str); /* invalid symbol name */
faluco@62	2484	symbolline=fline; /* save line where symbol was found */
faluco@62	2485	strcpy(constname,str); /* save symbol name */
faluco@62	2486	needtoken('=');
faluco@62	2487	constexpr(&val,&exprtag,NULL); /* get value */
faluco@62	2488	/* add_constant() checks for duplicate definitions */
faluco@62	2489	if (!matchtag(tag,exprtag,FALSE)) {
faluco@62	2490	/* temporarily reset the line number to where the symbol was defined */
faluco@62	2491	int orgfline=fline;
faluco@62	2492	fline=symbolline;
faluco@62	2493	error(213); /* tagname mismatch */
faluco@62	2494	fline=orgfline;
faluco@62	2495	} /* if */
faluco@62	2496	sym=add_constant(constname,val,vclass,tag);
faluco@62	2497	if (sym!=NULL)
faluco@62	2498	sc_attachdocumentation(sym);/* attach any documenation to the constant */
faluco@62	2499	} while (matchtoken(',')); /* enddo / / more? */
dvander@27	2500	needtoken(tTERM);
dvander@27	2501	}
dvander@27	2502
dvander@27	2503	/* decl_enum - declare enumerated constants
dvander@27	2504	*
dvander@27	2505	*/
dvander@27	2506	static void decl_enum(int vclass)
dvander@27	2507	{
dvander@27	2508	char enumname[sNAMEMAX+1],constname[sNAMEMAX+1];
dvander@27	2509	cell val,value,size;
dvander@27	2510	char *str;
dvander@27	2511	int tag,explicittag;
dvander@27	2512	cell increment,multiplier;
dvander@27	2513	constvalue *enumroot;
dvander@27	2514	symbol *enumsym;
dvander@27	2515
dvander@27	2516	/* get an explicit tag, if any (we need to remember whether an explicit
dvander@27	2517	* tag was passed, even if that explicit tag was "_:", so we cannot call
dvander@27	2518	* pc_addtag() here
dvander@27	2519	*/
dvander@27	2520	if (lex(&val,&str)==tLABEL) {
dvander@27	2521	tag=pc_addtag(str);
dvander@27	2522	explicittag=TRUE;
dvander@27	2523	} else {
dvander@27	2524	lexpush();
dvander@27	2525	tag=0;
dvander@27	2526	explicittag=FALSE;
dvander@27	2527	} /* if */
dvander@27	2528
dvander@27	2529	/* get optional enum name (also serves as a tag if no explicit tag was set) */
dvander@27	2530	if (lex(&val,&str)==tSYMBOL) { /* read in (new) token */
dvander@27	2531	strcpy(enumname,str); /* save enum name (last constant) */
dvander@27	2532	if (!explicittag)
dvander@27	2533	tag=pc_addtag(enumname);
dvander@27	2534	} else {
dvander@27	2535	lexpush(); /* analyze again */
dvander@27	2536	enumname[0]='\0';
dvander@27	2537	} /* if */
dvander@27	2538
dvander@27	2539	/* get increment and multiplier */
dvander@27	2540	increment=1;
dvander@27	2541	multiplier=1;
dvander@27	2542	if (matchtoken('(')) {
dvander@27	2543	if (matchtoken(taADD)) {
dvander@27	2544	constexpr(&increment,NULL,NULL);
dvander@27	2545	} else if (matchtoken(taMULT)) {
dvander@27	2546	constexpr(&multiplier,NULL,NULL);
dvander@27	2547	} else if (matchtoken(taSHL)) {
dvander@27	2548	constexpr(&val,NULL,NULL);
dvander@27	2549	while (val-->0)
dvander@27	2550	multiplier*=2;
dvander@27	2551	} /* if */
dvander@27	2552	needtoken(')');
dvander@27	2553	} /* if */
dvander@27	2554
dvander@27	2555	if (strlen(enumname)>0) {
dvander@27	2556	/* already create the root symbol, so the fields can have it as their "parent" */
dvander@27	2557	enumsym=add_constant(enumname,0,vclass,tag);
dvander@27	2558	if (enumsym!=NULL)
dvander@27	2559	enumsym->usage \|= uENUMROOT;
dvander@27	2560	/* start a new list for the element names */
dvander@27	2561	if ((enumroot=(constvalue*)malloc(sizeof(constvalue)))==NULL)
dvander@27	2562	error(103); /* insufficient memory (fatal error) */
dvander@27	2563	memset(enumroot,0,sizeof(constvalue));
dvander@27	2564	} else {
dvander@27	2565	enumsym=NULL;
dvander@27	2566	enumroot=NULL;
dvander@27	2567	} /* if */
dvander@27	2568
dvander@27	2569	needtoken('{');
dvander@27	2570	/* go through all constants */
dvander@27	2571	value=0; /* default starting value */
dvander@27	2572	do {
dvander@27	2573	int idxtag,fieldtag;
dvander@27	2574	symbol *sym;
dvander@27	2575	if (matchtoken('}')) { /* quick exit if '}' follows ',' */
dvander@27	2576	lexpush();
dvander@27	2577	break;
dvander@27	2578	} /* if */
dvander@27	2579	idxtag=pc_addtag(NULL); /* optional explicit item tag */
dvander@27	2580	if (needtoken(tSYMBOL)) { /* read in (new) token */
dvander@27	2581	tokeninfo(&val,&str); /* get the information */
dvander@27	2582	strcpy(constname,str); /* save symbol name */
dvander@27	2583	} else {
dvander@27	2584	constname[0]='\0';
dvander@27	2585	} /* if */
dvander@27	2586	size=increment; /* default increment of 'val' */
dvander@27	2587	fieldtag=0; /* default field tag */
dvander@27	2588	if (matchtoken('[')) {
dvander@27	2589	constexpr(&size,&fieldtag,NULL); /* get size */
dvander@27	2590	needtoken(']');
dvander@27	2591	} /* if */
dvander@27	2592	if (matchtoken('='))
dvander@27	2593	constexpr(&value,NULL,NULL); /* get value */
dvander@27	2594	/* add_constant() checks whether a variable (global or local) or
dvander@27	2595	* a constant with the same name already exists
dvander@27	2596	*/
dvander@27	2597	sym=add_constant(constname,value,vclass,tag);
dvander@27	2598	if (sym==NULL)
dvander@27	2599	continue; /* error message already given */
dvander@27	2600	/* set the item tag and the item size, for use in indexing arrays */
dvander@27	2601	sym->x.tags.index=idxtag;
dvander@27	2602	sym->x.tags.field=fieldtag;
dvander@27	2603	sym->dim.array.length=size;
dvander@27	2604	sym->dim.array.level=0;
dvander@27	2605	sym->parent=enumsym;
dvander@27	2606	/* add the constant to a separate list as well */
dvander@27	2607	if (enumroot!=NULL) {
dvander@27	2608	sym->usage \|= uENUMFIELD;
dvander@27	2609	append_constval(enumroot,constname,value,tag);
dvander@27	2610	} /* if */
dvander@27	2611	if (multiplier==1)
dvander@27	2612	value+=size;
dvander@27	2613	else
dvander@27	2614	value=sizemultiplier;
dvander@27	2615	} while (matchtoken(','));
dvander@27	2616	needtoken('}'); /* terminates the constant list */
dvander@27	2617	matchtoken(';'); /* eat an optional ; */
dvander@27	2618
dvander@27	2619	/* set the enum name to the "next" value (typically the last value plus one) */
dvander@27	2620	if (enumsym!=NULL) {
dvander@27	2621	assert((enumsym->usage & uENUMROOT)!=0);
dvander@27	2622	enumsym->addr=value;
dvander@27	2623	/* assign the constant list */
dvander@27	2624	assert(enumroot!=NULL);
dvander@27	2625	enumsym->dim.enumlist=enumroot;
dvander@27	2626	sc_attachdocumentation(enumsym); /* attach any documenation to the enumeration */
dvander@27	2627	} /* if */
dvander@27	2628	}
dvander@27	2629
dvander@27	2630	static int getstates(const char *funcname)
dvander@27	2631	{
dvander@27	2632	char fsaname[sNAMEMAX+1],statename[sNAMEMAX+1];
dvander@27	2633	cell val;
dvander@27	2634	char *str;
dvander@27	2635	constvalue *automaton;
dvander@27	2636	constvalue *state;
dvander@27	2637	int fsa,islabel;
dvander@27	2638	int *list;
dvander@27	2639	int count,listsize,state_id;
dvander@27	2640
dvander@27	2641	if (!matchtoken('<'))
dvander@27	2642	return 0;
dvander@27	2643	if (matchtoken('>'))
dvander@27	2644	return -1; /* special construct: all other states (fall-back) */
dvander@27	2645
dvander@27	2646	count=0;
dvander@27	2647	listsize=0;
dvander@27	2648	list=NULL;
dvander@27	2649	fsa=-1;
dvander@27	2650
dvander@27	2651	do {
dvander@27	2652	if (!(islabel=matchtoken(tLABEL)) && !needtoken(tSYMBOL))
dvander@27	2653	break;
dvander@27	2654	tokeninfo(&val,&str);
dvander@27	2655	assert(strlen(str)<sizeof fsaname);
dvander@27	2656	strcpy(fsaname,str); /* assume this is the name of the automaton */
dvander@27	2657	if (islabel \|\| matchtoken(':')) {
dvander@27	2658	/* token is an automaton name, add the name and get a new token */
dvander@27	2659	if (!needtoken(tSYMBOL))
dvander@27	2660	break;
dvander@27	2661	tokeninfo(&val,&str);
dvander@27	2662	assert(strlen(str)<sizeof statename);
dvander@27	2663	strcpy(statename,str);
dvander@27	2664	} else {
dvander@27	2665	/* the token was the state name (part of an anynymous automaton) */
dvander@27	2666	assert(strlen(fsaname)<sizeof statename);
dvander@27	2667	strcpy(statename,fsaname);
dvander@27	2668	fsaname[0]='\0';
dvander@27	2669	} /* if */
dvander@27	2670	if (fsa<0 \|\| fsaname[0]!='\0') {
dvander@27	2671	automaton=automaton_add(fsaname);
dvander@27	2672	assert(automaton!=NULL);
dvander@27	2673	if (fsa>=0 && automaton->index!=fsa)
dvander@27	2674	error(83,funcname); /* multiple automatons for a single function/variable */
dvander@27	2675	fsa=automaton->index;
dvander@27	2676	} /* if */
dvander@27	2677	state=state_add(statename,fsa);
dvander@27	2678	/* add this state to the state combination list (it will be attached to the
dvander@27	2679	* automaton later) */
dvander@27	2680	state_buildlist(&list,&listsize,&count,(int)state->value);
dvander@27	2681	} while (matchtoken(','));
dvander@27	2682	needtoken('>');
dvander@27	2683
dvander@27	2684	if (count>0) {
dvander@27	2685	assert(automaton!=NULL);
dvander@27	2686	assert(fsa>=0);
dvander@27	2687	state_id=state_addlist(list,count,fsa);
dvander@27	2688	assert(state_id>0);
dvander@27	2689	} else {
dvander@27	2690	/* error is already given */
dvander@27	2691	state_id=0;
dvander@27	2692	} /* if */
dvander@27	2693	if (list!=NULL)
dvander@27	2694	free(list);
dvander@27	2695
dvander@27	2696	return state_id;
dvander@27	2697	}
dvander@27	2698
dvander@27	2699	static void attachstatelist(symbol *sym, int state_id)
dvander@27	2700	{
dvander@27	2701	assert(sym!=NULL);
dvander@27	2702	if ((sym->usage & uDEFINE)!=0 && (sym->states==NULL \|\| state_id==0))
dvander@27	2703	error(21,sym->name); /* function already defined, either without states or the current definition has no states */
dvander@27	2704
dvander@27	2705	if (state_id!=0) {
dvander@27	2706	/* add the state list id */
dvander@27	2707	constvalue *stateptr;
dvander@27	2708	if (sym->states==NULL) {
dvander@27	2709	if ((sym->states=(constvalue*)malloc(sizeof(constvalue)))==NULL)
dvander@27	2710	error(103); /* insufficient memory (fatal error) */
dvander@27	2711	memset(sym->states,0,sizeof(constvalue));
dvander@27	2712	} /* if */
dvander@27	2713	/* see whether the id already exists (add new state only if it does not
dvander@27	2714	* yet exist
dvander@27	2715	*/
dvander@27	2716	assert(sym->states!=NULL);
dvander@27	2717	for (stateptr=sym->states->next; stateptr!=NULL && stateptr->index!=state_id; stateptr=stateptr->next)
dvander@27	2718	/* nothing */;
dvander@27	2719	assert(state_id<=SHRT_MAX);
dvander@27	2720	if (stateptr==NULL)
dvander@27	2721	append_constval(sym->states,"",code_idx,(short)state_id);
dvander@27	2722	else if (stateptr->value==0)
dvander@27	2723	stateptr->value=code_idx;
dvander@27	2724	else
dvander@27	2725	error(84,sym->name);
dvander@27	2726	/* also check for another conflicting situation: a fallback function
dvander@27	2727	* without any states
dvander@27	2728	*/
dvander@27	2729	if (state_id==-1 && sc_status!=statFIRST) {
dvander@27	2730	/* in the second round, all states should have been accumulated */
dvander@27	2731	assert(sym->states!=NULL);
dvander@27	2732	for (stateptr=sym->states->next; stateptr!=NULL && stateptr->index==-1; stateptr=stateptr->next)
dvander@27	2733	/* nothing */;
dvander@27	2734	if (stateptr==NULL)
dvander@27	2735	error(85,sym->name); /* no states are defined for this function */
dvander@27	2736	} /* if */
dvander@27	2737	} /* if */
dvander@27	2738	}
dvander@27	2739
dvander@27	2740	/*
dvander@27	2741	* Finds a function in the global symbol table or creates a new entry.
dvander@27	2742	* It does some basic processing and error checking.
dvander@27	2743	*/
dvander@27	2744	SC_FUNC symbol fetchfunc(char name,int tag)
dvander@27	2745	{
dvander@27	2746	symbol *sym;
dvander@27	2747
dvander@27	2748	if ((sym=findglb(name,sGLOBAL))!=0) { /* already in symbol table? */
dvander@27	2749	if (sym->ident!=iFUNCTN) {
dvander@27	2750	error(21,name); /* yes, but not as a function */
dvander@27	2751	return NULL; /* make sure the old symbol is not damaged */
dvander@27	2752	} else if ((sym->usage & uNATIVE)!=0) {
dvander@27	2753	error(21,name); /* yes, and it is a native */
dvander@27	2754	} /* if */
dvander@27	2755	assert(sym->vclass==sGLOBAL);
dvander@27	2756	if ((sym->usage & uPROTOTYPED)!=0 && sym->tag!=tag)
dvander@27	2757	error(25); /* mismatch from earlier prototype */
dvander@27	2758	if ((sym->usage & uDEFINE)==0) {
dvander@27	2759	/* as long as the function stays undefined, update the address and the tag */
dvander@27	2760	if (sym->states==NULL)
dvander@27	2761	sym->addr=code_idx;
dvander@27	2762	sym->tag=tag;
dvander@27	2763	} /* if */
dvander@27	2764	} else {
dvander@27	2765	/* don't set the "uDEFINE" flag; it may be a prototype */
dvander@27	2766	sym=addsym(name,code_idx,iFUNCTN,sGLOBAL,tag,0);
dvander@27	2767	assert(sym!=NULL); /* fatal error 103 must be given on error */
dvander@27	2768	/* assume no arguments */
dvander@27	2769	sym->dim.arglist=(arginfo)malloc(1sizeof(arginfo));
dvander@27	2770	sym->dim.arglist[0].ident=0;
dvander@27	2771	/* set library ID to NULL (only for native functions) */
dvander@27	2772	sym->x.lib=NULL;
dvander@27	2773	/* set the required stack size to zero (only for non-native functions) */
dvander@27	2774	sym->x.stacksize=1; /* 1 for PROC opcode */
dvander@27	2775	} /* if */
ds@52	2776	if (pc_deprecate!=NULL) {
dvander@27	2777	assert(sym!=NULL);
ds@52	2778	sym->flags\|=flgDEPRECATED;
dvander@27	2779	if (sc_status==statWRITE) {
dvander@27	2780	if (sym->documentation!=NULL) {
dvander@27	2781	free(sym->documentation);
dvander@27	2782	sym->documentation=NULL;
dvander@27	2783	} /* if */
ds@52	2784	sym->documentation=pc_deprecate;
dvander@27	2785	} else {
ds@52	2786	free(pc_deprecate);
dvander@27	2787	} /* if */
ds@52	2788	pc_deprecate=NULL;
dvander@27	2789	} /* if */
dvander@27	2790
dvander@27	2791	return sym;
dvander@27	2792	}
dvander@27	2793
dvander@27	2794	/* This routine adds symbolic information for each argument.
dvander@27	2795	*/
dvander@27	2796	static void define_args(void)
dvander@27	2797	{
dvander@27	2798	symbol *sym;
dvander@27	2799
dvander@27	2800	/* At this point, no local variables have been declared. All
dvander@27	2801	* local symbols are function arguments.
dvander@27	2802	*/
dvander@27	2803	sym=loctab.next;
dvander@27	2804	while (sym!=NULL) {
dvander@27	2805	assert(sym->ident!=iLABEL);
dvander@27	2806	assert(sym->vclass==sLOCAL);
dvander@27	2807	markexpr(sLDECL,sym->name,sym->addr); /* mark for better optimization */
dvander@27	2808	sym=sym->next;
dvander@27	2809	} /* while */
dvander@27	2810	}
dvander@27	2811
dvander@27	2812	static int operatorname(char *name)
dvander@27	2813	{
dvander@27	2814	int opertok;
dvander@27	2815	char *str;
dvander@27	2816	cell val;
dvander@27	2817
dvander@27	2818	assert(name!=NULL);
dvander@27	2819
dvander@27	2820	/* check the operator */
dvander@27	2821	opertok=lex(&val,&str);
dvander@27	2822	switch (opertok) {
dvander@27	2823	case '+':
dvander@27	2824	case '-':
dvander@27	2825	case '*':
dvander@27	2826	case '/':
dvander@27	2827	case '%':
dvander@27	2828	case '>':
dvander@27	2829	case '<':
dvander@27	2830	case '!':
dvander@27	2831	case '~':
dvander@27	2832	case '=':
dvander@27	2833	name[0]=(char)opertok;
dvander@27	2834	name[1]='\0';
dvander@27	2835	break;
dvander@27	2836	case tINC:
dvander@27	2837	strcpy(name,"++");
dvander@27	2838	break;
dvander@27	2839	case tDEC:
dvander@27	2840	strcpy(name,"--");
dvander@27	2841	break;
dvander@27	2842	case tlEQ:
dvander@27	2843	strcpy(name,"==");
dvander@27	2844	break;
dvander@27	2845	case tlNE:
dvander@27	2846	strcpy(name,"!=");
dvander@27	2847	break;
dvander@27	2848	case tlLE:
dvander@27	2849	strcpy(name,"<=");
dvander@27	2850	break;
dvander@27	2851	case tlGE:
dvander@27	2852	strcpy(name,">=");
dvander@27	2853	break;
dvander@27	2854	default:
dvander@27	2855	name[0]='\0';
dvander@27	2856	error(7); /* operator cannot be redefined (or bad operator name) */
dvander@27	2857	return 0;
dvander@27	2858	} /* switch */
dvander@27	2859
dvander@27	2860	return opertok;
dvander@27	2861	}
dvander@27	2862
dvander@27	2863	static int operatoradjust(int opertok,symbol sym,char opername,int resulttag)
dvander@27	2864	{
dvander@27	2865	int tags[2]={0,0};
dvander@27	2866	int count=0;
dvander@27	2867	arginfo *arg;
dvander@27	2868	char tmpname[sNAMEMAX+1];
dvander@27	2869	symbol *oldsym;
dvander@27	2870
dvander@27	2871	if (opertok==0)
dvander@27	2872	return TRUE;
dvander@27	2873
dvander@27	2874	assert(sym!=NULL && sym->ident==iFUNCTN && sym->dim.arglist!=NULL);
dvander@27	2875	/* count arguments and save (first two) tags */
dvander@27	2876	while (arg=&sym->dim.arglist[count], arg->ident!=0) {
dvander@27	2877	if (count<2) {
dvander@27	2878	if (arg->numtags>1)
dvander@27	2879	error(65,count+1); /* function argument may only have a single tag */
dvander@27	2880	else if (arg->numtags==1)
dvander@27	2881	tags[count]=arg->tags[0];
dvander@27	2882	} /* if */
dvander@27	2883	if (opertok=='~' && count==0) {
dvander@27	2884	if (arg->ident!=iREFARRAY)
dvander@27	2885	error(73,arg->name);/* must be an array argument */
dvander@27	2886	} else {
dvander@27	2887	if (arg->ident!=iVARIABLE)
dvander@27	2888	error(66,arg->name);/* must be non-reference argument */
dvander@27	2889	} /* if */
dvander@27	2890	if (arg->hasdefault)
dvander@27	2891	error(59,arg->name); /* arguments of an operator may not have a default value */
dvander@27	2892	count++;
dvander@27	2893	} /* while */
dvander@27	2894
dvander@27	2895	/* for '!', '++' and '--', count must be 1
dvander@27	2896	* for '-', count may be 1 or 2
dvander@27	2897	* for '=', count must be 1, and the resulttag is also important
dvander@27	2898	* for all other (binary) operators and the special '~' operator, count must be 2
dvander@27	2899	*/
dvander@27	2900	switch (opertok) {
dvander@27	2901	case '!':
dvander@27	2902	case '=':
dvander@27	2903	case tINC:
dvander@27	2904	case tDEC:
dvander@27	2905	if (count!=1)
dvander@27	2906	error(62); /* number or placement of the operands does not fit the operator */
dvander@27	2907	break;
dvander@27	2908	case '-':
dvander@27	2909	if (count!=1 && count!=2)
dvander@27	2910	error(62); /* number or placement of the operands does not fit the operator */
dvander@27	2911	break;
dvander@27	2912	default:
dvander@27	2913	if (count!=2)
dvander@27	2914	error(62); /* number or placement of the operands does not fit the operator */
dvander@27	2915	} /* switch */
dvander@27	2916
dvander@27	2917	if (tags[0]==0 && (opertok!='=' && tags[1]==0 \|\| opertok=='=' && resulttag==0))
dvander@27	2918	error(64); /* cannot change predefined operators */
dvander@27	2919
dvander@27	2920	/* change the operator name */
dvander@27	2921	assert(strlen(opername)>0);
dvander@27	2922	operator_symname(tmpname,opername,tags[0],tags[1],count,resulttag);
dvander@27	2923	if ((oldsym=findglb(tmpname,sGLOBAL))!=NULL) {
dvander@27	2924	int i;
dvander@27	2925	if ((oldsym->usage & uDEFINE)!=0) {
dvander@27	2926	char errname[2*sNAMEMAX+16];
dvander@27	2927	funcdisplayname(errname,tmpname);
dvander@27	2928	error(21,errname); /* symbol already defined */
dvander@27	2929	} /* if */
dvander@27	2930	sym->usage\|=oldsym->usage; /* copy flags from the previous definition */
dvander@27	2931	for (i=0; i<oldsym->numrefers; i++)
dvander@27	2932	if (oldsym->refer[i]!=NULL)
dvander@27	2933	refer_symbol(sym,oldsym->refer[i]);
dvander@27	2934	delete_symbol(&glbtab,oldsym);
dvander@27	2935	} /* if */
dvander@27	2936	strcpy(sym->name,tmpname);
dvander@27	2937	sym->hash=namehash(sym->name);/* calculate new hash */
dvander@27	2938
dvander@27	2939	/* operators should return a value, except the '~' operator */
dvander@27	2940	if (opertok!='~')
dvander@27	2941	sym->usage \|= uRETVALUE;
dvander@27	2942
dvander@27	2943	return TRUE;
dvander@27	2944	}
dvander@27	2945
dvander@27	2946	static int check_operatortag(int opertok,int resulttag,char *opername)
dvander@27	2947	{
dvander@27	2948	assert(opername!=NULL && strlen(opername)>0);
dvander@27	2949	switch (opertok) {
dvander@27	2950	case '!':
dvander@27	2951	case '<':
dvander@27	2952	case '>':
dvander@27	2953	case tlEQ:
dvander@27	2954	case tlNE:
dvander@27	2955	case tlLE:
dvander@27	2956	case tlGE:
dvander@27	2957	if (resulttag!=pc_addtag("bool")) {
dvander@27	2958	error(63,opername,"bool:"); /* operator X requires a "bool:" result tag */
dvander@27	2959	return FALSE;
dvander@27	2960	} /* if */
dvander@27	2961	break;
dvander@27	2962	case '~':
dvander@27	2963	if (resulttag!=0) {
dvander@27	2964	error(63,opername,"_:"); /* operator "~" requires a "_:" result tag */
dvander@27	2965	return FALSE;
dvander@27	2966	} /* if */
dvander@27	2967	break;
dvander@27	2968	} /* switch */
dvander@27	2969	return TRUE;
dvander@27	2970	}
dvander@27	2971
dvander@27	2972	static char tag2str(char dest,int tag)
dvander@27	2973	{
dvander@27	2974	tag &= TAGMASK;
dvander@27	2975	assert(tag>=0);
dvander@27	2976	sprintf(dest,"0%x",tag);
dvander@27	2977	return isdigit(dest[1]) ? &dest[1] : dest;
dvander@27	2978	}
dvander@27	2979
dvander@27	2980	SC_FUNC char operator_symname(char symname,char *opername,int tag1,int tag2,int numtags,int resulttag)
dvander@27	2981	{
dvander@27	2982	char tagstr1[10], tagstr2[10];
dvander@27	2983	int opertok;
dvander@27	2984
dvander@27	2985	assert(numtags>=1 && numtags<=2);
dvander@27	2986	opertok= (opername[1]=='\0') ? opername[0] : 0;
dvander@27	2987	if (opertok=='=')
dvander@27	2988	sprintf(symname,"%s%s%s",tag2str(tagstr1,resulttag),opername,tag2str(tagstr2,tag1));
dvander@27	2989	else if (numtags==1 \|\| opertok=='~')
dvander@27	2990	sprintf(symname,"%s%s",opername,tag2str(tagstr1,tag1));
dvander@27	2991	else
dvander@27	2992	sprintf(symname,"%s%s%s",tag2str(tagstr1,tag1),opername,tag2str(tagstr2,tag2));
dvander@27	2993	return symname;
dvander@27	2994	}
dvander@27	2995
dvander@27	2996	static int parse_funcname(char fname,int tag1,int tag2,char opname)
dvander@27	2997	{
dvander@27	2998	char ptr,name;
dvander@27	2999	int unary;
dvander@27	3000
dvander@27	3001	/* tags are only positive, so if the function name starts with a '-',
dvander@27	3002	* the operator is an unary '-' or '--' operator.
dvander@27	3003	*/
dvander@27	3004	if (*fname=='-') {
dvander@27	3005	*tag1=0;
dvander@27	3006	unary=TRUE;
dvander@27	3007	ptr=fname;
dvander@27	3008	} else {
dvander@27	3009	*tag1=(int)strtol(fname,&ptr,16);
dvander@27	3010	unary= ptr==fname; /* unary operator if it doesn't start with a tag name */
dvander@27	3011	} /* if */
dvander@27	3012	assert(!unary \|\| *tag1==0);
dvander@27	3013	assert(*ptr!='\0');
dvander@27	3014	for (name=opname; !isdigit(*ptr); )
dvander@27	3015	name++ = ptr++;
dvander@27	3016	*name='\0';
dvander@27	3017	*tag2=(int)strtol(ptr,NULL,16);
dvander@27	3018	return unary;
dvander@27	3019	}
dvander@27	3020
dvander@27	3021	static constvalue *find_tag_byval(int tag)
dvander@27	3022	{
dvander@27	3023	constvalue *tagsym;
dvander@27	3024	tagsym=find_constval_byval(&tagname_tab,tag & ~PUBLICTAG);
dvander@27	3025	if (tagsym==NULL)
dvander@27	3026	tagsym=find_constval_byval(&tagname_tab,tag \| PUBLICTAG);
dvander@27	3027	return tagsym;
dvander@27	3028	}
dvander@27	3029
dvander@27	3030	SC_FUNC char funcdisplayname(char dest,char *funcname)
dvander@27	3031	{
dvander@27	3032	int tags[2];
dvander@27	3033	char opname[10];
dvander@27	3034	constvalue *tagsym[2];
dvander@27	3035	int unary;
dvander@27	3036
dvander@27	3037	if (isalpha(funcname) \|\| funcname=='_' \|\| funcname==PUBLIC_CHAR \|\| funcname=='\0') {
dvander@27	3038	if (dest!=funcname)
dvander@27	3039	strcpy(dest,funcname);
dvander@27	3040	return dest;
dvander@27	3041	} /* if */
dvander@27	3042
dvander@27	3043	unary=parse_funcname(funcname,&tags[0],&tags[1],opname);
dvander@27	3044	tagsym[1]=find_tag_byval(tags[1]);
dvander@27	3045	assert(tagsym[1]!=NULL);
dvander@27	3046	if (unary) {
dvander@27	3047	sprintf(dest,"operator%s(%s:)",opname,tagsym[1]->name);
dvander@27	3048	} else {
dvander@27	3049	tagsym[0]=find_tag_byval(tags[0]);
dvander@27	3050	assert(tagsym[0]!=NULL);
dvander@27	3051	/* special case: the assignment operator has the return value as the 2nd tag */
dvander@27	3052	if (opname[0]=='=' && opname[1]=='\0')
dvander@27	3053	sprintf(dest,"%s:operator%s(%s:)",tagsym[0]->name,opname,tagsym[1]->name);
dvander@27	3054	else
dvander@27	3055	sprintf(dest,"operator%s(%s:,%s:)",opname,tagsym[0]->name,tagsym[1]->name);
dvander@27	3056	} /* if */
dvander@27	3057	return dest;
dvander@27	3058	}
dvander@27	3059
dvander@27	3060	static void funcstub(int fnative)
dvander@27	3061	{
dvander@27	3062	int tok,tag,fpublic;
dvander@27	3063	char *str;
dvander@27	3064	cell val,size;
dvander@27	3065	char symbolname[sNAMEMAX+1];
dvander@27	3066	int idxtag[sDIMEN_MAX];
dvander@27	3067	int dim[sDIMEN_MAX];
dvander@27	3068	int numdim;
dvander@27	3069	symbol sym,sub;
dvander@27	3070	int opertok;
dvander@27	3071
dvander@27	3072	opertok=0;
dvander@27	3073	lastst=0;
dvander@27	3074	litidx=0; /* clear the literal pool */
dvander@27	3075	assert(loctab.next==NULL); /* local symbol table should be empty */
dvander@27	3076
dvander@27	3077	tag=pc_addtag(NULL); /* get the tag of the return value */
dvander@27	3078	numdim=0;
dvander@27	3079	while (matchtoken('[')) {
dvander@27	3080	/* the function returns an array, get this tag for the index and the array
dvander@27	3081	* dimensions
dvander@27	3082	*/
dvander@27	3083	if (numdim == sDIMEN_MAX) {
dvander@27	3084	error(53); /* exceeding maximum number of dimensions */
dvander@27	3085	return;
dvander@27	3086	} /* if */
dvander@27	3087	size=needsub(&idxtag[numdim],NULL); /* get size; size==0 for "var[]" */
dvander@27	3088	if (size==0)
dvander@27	3089	error(9); /* invalid array size */
dvander@27	3090	#if INT_MAX < LONG_MAX
dvander@27	3091	if (size > INT_MAX)
dvander@27	3092	error(105); /* overflow, exceeding capacity */
dvander@27	3093	#endif
dvander@27	3094	dim[numdim++]=(int)size;
dvander@27	3095	} /* while */
dvander@27	3096
dvander@27	3097	tok=lex(&val,&str);
dvander@27	3098	fpublic=(tok==tPUBLIC) \|\| (tok==tSYMBOL && str[0]==PUBLIC_CHAR);
dvander@27	3099	if (fnative) {
dvander@27	3100	if (fpublic \|\| tok==tSTOCK \|\| tok==tSTATIC \|\| tok==tSYMBOL && *str==PUBLIC_CHAR)
dvander@27	3101	error(42); /* invalid combination of class specifiers */
dvander@27	3102	} else {
dvander@27	3103	if (tok==tPUBLIC \|\| tok==tSTOCK \|\| tok==tSTATIC)
dvander@27	3104	tok=lex(&val,&str);
dvander@27	3105	} /* if */
dvander@27	3106
dvander@27	3107	if (tok==tOPERATOR) {
dvander@27	3108	opertok=operatorname(symbolname);
dvander@27	3109	if (opertok==0)
dvander@27	3110	return; /* error message already given */
dvander@27	3111	check_operatortag(opertok,tag,symbolname);
dvander@27	3112	} else {
dvander@27	3113	if (tok!=tSYMBOL && freading) {
dvander@27	3114	error(10); /* illegal function or declaration */
dvander@27	3115	return;
dvander@27	3116	} /* if */
dvander@27	3117	strcpy(symbolname,str);
dvander@27	3118	} /* if */
dvander@27	3119	needtoken('('); /* only functions may be native/forward */
dvander@27	3120
dvander@27	3121	sym=fetchfunc(symbolname,tag);/* get a pointer to the function entry */
dvander@27	3122	if (sym==NULL)
dvander@27	3123	return;
dvander@27	3124	if (fnative) {
dvander@27	3125	sym->usage=(char)(uNATIVE \| uRETVALUE \| uDEFINE \| (sym->usage & uPROTOTYPED));
dvander@27	3126	sym->x.lib=curlibrary;
dvander@27	3127	} else if (fpublic) {
dvander@27	3128	sym->usage\|=uPUBLIC;
dvander@27	3129	} /* if */
dvander@27	3130	sym->usage\|=uFORWARD;
dvander@27	3131
dvander@27	3132	declargs(sym,FALSE);
dvander@27	3133	/* "declargs()" found the ")" */
dvander@27	3134	sc_attachdocumentation(sym); /* attach any documenation to the function */
dvander@27	3135	if (!operatoradjust(opertok,sym,symbolname,tag))
dvander@27	3136	sym->usage &= ~uDEFINE;
dvander@27	3137
dvander@27	3138	if (getstates(symbolname)!=0) {
dvander@27	3139	if (fnative \|\| opertok!=0)
dvander@27	3140	error(82); /* native functions and operators may not have states */
dvander@27	3141	else
dvander@27	3142	error(231); /* ignoring state specifications on forward declarations */
dvander@27	3143	} /* if */
dvander@27	3144
dvander@27	3145	/* for a native operator, also need to specify an "exported" function name;
dvander@27	3146	* for a native function, this is optional
dvander@27	3147	*/
dvander@27	3148	if (fnative) {
dvander@27	3149	if (opertok!=0) {
dvander@27	3150	needtoken('=');
dvander@27	3151	lexpush(); /* push back, for matchtoken() to retrieve again */
dvander@27	3152	} /* if */
dvander@27	3153	if (matchtoken('=')) {
dvander@27	3154	/* allow number or symbol */
dvander@27	3155	if (matchtoken(tSYMBOL)) {
dvander@27	3156	tokeninfo(&val,&str);
dvander@27	3157	insert_alias(sym->name,str);
dvander@27	3158	} else {
dvander@27	3159	constexpr(&val,NULL,NULL);
dvander@27	3160	sym->addr=val;
dvander@27	3161	/* At the moment, I have assumed that this syntax is only valid if
dvander@27	3162	* val < 0. To properly mix "normal" native functions and indexed
dvander@27	3163	* native functions, one should use negative indices anyway.
dvander@27	3164	* Special code for a negative index in sym->addr exists in SC4.C
dvander@27	3165	* (ffcall()) and in SC6.C (the loops for counting the number of native
dvander@27	3166	* variables and for writing them).
dvander@27	3167	*/
dvander@27	3168	} /* if */
dvander@27	3169	} /* if */
dvander@27	3170	} /* if */
dvander@27	3171	needtoken(tTERM);
dvander@27	3172
dvander@27	3173	/* attach the array to the function symbol */
dvander@27	3174	if (numdim>0) {
dvander@27	3175	assert(sym!=NULL);
dvander@27	3176	sub=addvariable(symbolname,0,iARRAY,sGLOBAL,tag,dim,numdim,idxtag);
dvander@27	3177	sub->parent=sym;
dvander@27	3178	} /* if */
dvander@27	3179
dvander@27	3180	litidx=0; /* clear the literal pool */
dvander@27	3181	delete_symbols(&loctab,0,TRUE,TRUE);/* clear local variables queue */
dvander@27	3182	}
dvander@27	3183
dvander@27	3184	/* newfunc - begin a function
dvander@27	3185	*
dvander@27	3186	* This routine is called from "parse" and tries to make a function
dvander@27	3187	* out of the following text
dvander@27	3188	*
dvander@27	3189	* Global references: funcstatus,lastst,litidx
dvander@27	3190	* rettype (altered)
dvander@27	3191	* curfunc (altered)
dvander@27	3192	* declared (altered)
dvander@27	3193	* glb_declared (altered)
dvander@27	3194	* sc_alignnext (altered)
dvander@27	3195	*/
dvander@27	3196	static int newfunc(char *firstname,int firsttag,int fpublic,int fstatic,int stock)
dvander@27	3197	{
dvander@27	3198	symbol *sym;
dvander@27	3199	int argcnt,tok,tag,funcline;
dvander@27	3200	int opertok,opererror;
dvander@27	3201	char symbolname[sNAMEMAX+1];
dvander@27	3202	char *str;
dvander@27	3203	cell val,cidx,glbdecl;
dvander@27	3204	short filenum;
dvander@27	3205	int state_id;
dvander@27	3206
dvander@27	3207	assert(litidx==0); /* literal queue should be empty */
dvander@27	3208	litidx=0; /* clear the literal pool (should already be empty) */
dvander@27	3209	opertok=0;
dvander@27	3210	lastst=0; /* no statement yet */
dvander@27	3211	cidx=0; /* just to avoid compiler warnings */
dvander@27	3212	glbdecl=0;
dvander@27	3213	assert(loctab.next==NULL); /* local symbol table should be empty */
dvander@27	3214	filenum=fcurrent; /* save file number at the start of the declaration */
dvander@27	3215
dvander@27	3216	if (firstname!=NULL) {
dvander@27	3217	assert(strlen(firstname)<=sNAMEMAX);
dvander@27	3218	strcpy(symbolname,firstname); /* save symbol name */
dvander@27	3219	tag=firsttag;
dvander@27	3220	} else {
dvander@27	3221	tag= (firsttag>=0) ? firsttag : pc_addtag(NULL);
dvander@27	3222	tok=lex(&val,&str);
dvander@27	3223	assert(!fpublic);
dvander@27	3224	if (tok==tNATIVE \|\| tok==tPUBLIC && stock)
dvander@27	3225	error(42); /* invalid combination of class specifiers */
dvander@27	3226	if (tok==tOPERATOR) {
dvander@27	3227	opertok=operatorname(symbolname);
dvander@27	3228	if (opertok==0)
dvander@27	3229	return TRUE; /* error message already given */
dvander@27	3230	check_operatortag(opertok,tag,symbolname);
dvander@27	3231	} else {
dvander@27	3232	if (tok!=tSYMBOL && freading) {
dvander@27	3233	error(20,str); /* invalid symbol name */
dvander@27	3234	return FALSE;
dvander@27	3235	} /* if */
dvander@27	3236	assert(strlen(str)<=sNAMEMAX);
dvander@27	3237	strcpy(symbolname,str);
dvander@27	3238	} /* if */
dvander@27	3239	} /* if */
dvander@27	3240	/* check whether this is a function or a variable declaration */
dvander@27	3241	if (!matchtoken('('))
dvander@27	3242	return FALSE;
dvander@27	3243	/* so it is a function, proceed */
dvander@27	3244	funcline=fline; /* save line at which the function is defined */
dvander@27	3245	if (symbolname[0]==PUBLIC_CHAR) {
dvander@27	3246	fpublic=TRUE; /* implicitly public function */
dvander@27	3247	if (stock)
dvander@27	3248	error(42); /* invalid combination of class specifiers */
dvander@27	3249	} /* if */
dvander@27	3250	sym=fetchfunc(symbolname,tag);/* get a pointer to the function entry */
dvander@27	3251	if (sym==NULL \|\| (sym->usage & uNATIVE)!=0)
dvander@27	3252	return TRUE; /* it was recognized as a function declaration, but not as a valid one */
dvander@27	3253	if (fpublic)
dvander@27	3254	sym->usage\|=uPUBLIC;
dvander@27	3255	if (fstatic)
dvander@27	3256	sym->fnumber=filenum;
dvander@27	3257	/* if the function was used before being declared, and it has a tag for the
dvander@27	3258	* result, add a third pass (as second "skimming" parse) because the function
dvander@27	3259	* result may have been used with user-defined operators, which have now
dvander@27	3260	* been incorrectly flagged (as the return tag was unknown at the time of
dvander@27	3261	* the call)
dvander@27	3262	*/
dvander@27	3263	if ((sym->usage & (uPROTOTYPED \| uREAD))==uREAD && sym->tag!=0) {
dvander@27	3264	int curstatus=sc_status;
dvander@27	3265	sc_status=statWRITE; /* temporarily set status to WRITE, so the warning isn't blocked */
dvander@27	3266	#if 0 /* SourceMod - silly, should be removed in first pass, so removed */
dvander@27	3267	error(208);
dvander@27	3268	#endif
dvander@27	3269	sc_status=curstatus;
dvander@27	3270	sc_reparse=TRUE; /* must add another pass to "initial scan" phase */
dvander@27	3271	} /* if */
dvander@27	3272	#if 0 /* Not used for SourceMod */
dvander@27	3273	/* we want public functions to be explicitly prototyped, as they are called
dvander@27	3274	* from the outside
dvander@27	3275	*/
dvander@27	3276	if (fpublic && (sym->usage & uFORWARD)==0)
dvander@27	3277	error(235,symbolname);
dvander@27	3278	#endif
dvander@27	3279	/* declare all arguments */
dvander@27	3280	argcnt=declargs(sym,TRUE);
dvander@27	3281	opererror=!operatoradjust(opertok,sym,symbolname,tag);
dvander@27	3282	if (strcmp(symbolname,uMAINFUNC)==0 \|\| strcmp(symbolname,uENTRYFUNC)==0) {
dvander@27	3283	if (argcnt>0)
dvander@27	3284	error(5); /* "main()" and "entry()" functions may not have any arguments */
dvander@27	3285	sym->usage\|=uREAD; /* "main()" is the program's entry point: always used */
dvander@27	3286	} /* if */
dvander@27	3287	state_id=getstates(symbolname);
dvander@27	3288	if (state_id>0 && (opertok!=0 \|\| strcmp(symbolname,uMAINFUNC)==0))
dvander@27	3289	error(82); /* operators may not have states, main() may neither */
dvander@27	3290	attachstatelist(sym,state_id);
dvander@27	3291	/* "declargs()" found the ")"; if a ";" appears after this, it was a
dvander@27	3292	* prototype */
dvander@27	3293	if (matchtoken(';')) {
dvander@27	3294	sym->usage\|=uFORWARD;
dvander@27	3295	if (!sc_needsemicolon)
dvander@27	3296	error(218); /* old style prototypes used with optional semicolumns */
dvander@27	3297	delete_symbols(&loctab,0,TRUE,TRUE); /* prototype is done; forget everything */
dvander@27	3298	return TRUE;
dvander@27	3299	} /* if */
dvander@27	3300	/* so it is not a prototype, proceed */
dvander@27	3301	/* if this is a function that is not referred to (this can only be detected
dvander@27	3302	* in the second stage), shut code generation off */
dvander@27	3303	if (sc_status==statWRITE && (sym->usage & uREAD)==0 && !fpublic) {
dvander@27	3304	sc_status=statSKIP;
dvander@27	3305	cidx=code_idx;
dvander@27	3306	glbdecl=glb_declared;
dvander@27	3307	} /* if */
ds@52	3308	if ((sym->flags & flgDEPRECATED)!=0) {
dvander@27	3309	char *ptr= (sym->documentation!=NULL) ? sym->documentation : "";
ds@52	3310	error(234,symbolname,ptr); /* deprecated (probably a public function) */
dvander@27	3311	} /* if */
dvander@27	3312	begcseg();
dvander@27	3313	sym->usage\|=uDEFINE; /* set the definition flag */
dvander@27	3314	if (stock)
dvander@27	3315	sym->usage\|=uSTOCK;
dvander@27	3316	if (opertok!=0 && opererror)
dvander@27	3317	sym->usage &= ~uDEFINE;
dvander@27	3318	/* if the function has states, dump the label to the start of the function */
dvander@27	3319	if (state_id!=0) {
dvander@27	3320	constvalue *ptr=sym->states->next;
dvander@27	3321	while (ptr!=NULL) {
dvander@27	3322	assert(sc_status!=statWRITE \|\| strlen(ptr->name)>0);
dvander@27	3323	if (ptr->index==state_id) {
dvander@27	3324	setlabel((int)strtol(ptr->name,NULL,16));
dvander@27	3325	break;
dvander@27	3326	} /* if */
dvander@27	3327	ptr=ptr->next;
dvander@27	3328	} /* while */
dvander@27	3329	} /* if */
dvander@27	3330	startfunc(sym->name); /* creates stack frame */
dvander@27	3331	insert_dbgline(funcline);
dvander@27	3332	setline(FALSE);
dvander@27	3333	if (sc_alignnext) {
dvander@27	3334	alignframe(sc_dataalign);
dvander@27	3335	sc_alignnext=FALSE;
dvander@27	3336	} /* if */
dvander@27	3337	declared=0; /* number of local cells */
dvander@117	3338	resetstacklist();
dvander@27	3339	rettype=(sym->usage & uRETVALUE); /* set "return type" variable */
dvander@27	3340	curfunc=sym;
dvander@27	3341	define_args(); /* add the symbolic info for the function arguments */
dvander@27	3342	#if !defined SC_LIGHT
dvander@27	3343	if (matchtoken('{')) {
dvander@27	3344	lexpush();
dvander@27	3345	} else {
dvander@27	3346	/* Insert a separator so that comments following the statement will not
dvander@27	3347	* be attached to this function; they should be attached to the next
dvander@27	3348	* function. This is not a problem for functions having a compound block,
dvander@27	3349	* because the closing brace is an explicit "end token" for the function.
dvander@27	3350	* With single statement functions, the preprocessor may overread the
dvander@27	3351	* source code before the parser determines an "end of statement".
dvander@27	3352	*/
dvander@27	3353	insert_docstring_separator();
dvander@27	3354	} /* if */
dvander@27	3355	#endif
dvander@27	3356	sc_curstates=state_id;/* set state id, for accessing global state variables */
dvander@27	3357	statement(NULL,FALSE);
dvander@27	3358	sc_curstates=0;
dvander@27	3359	if ((rettype & uRETVALUE)!=0)
dvander@27	3360	sym->usage\|=uRETVALUE;
dvander@27	3361	if (declared!=0) {
dvander@27	3362	/* This happens only in a very special (and useless) case, where a function
dvander@27	3363	* has only a single statement in its body (no compound block) and that
dvander@27	3364	* statement declares a new variable
dvander@27	3365	*/
dvander@117	3366	popstacklist();
dvander@27	3367	declared=0;
dvander@27	3368	} /* if */
dvander@27	3369	if ((lastst!=tRETURN) && (lastst!=tGOTO)){
dvander@27	3370	ldconst(0,sPRI);
dvander@27	3371	ffret(strcmp(sym->name,uENTRYFUNC)!=0);
dvander@27	3372	if ((sym->usage & uRETVALUE)!=0) {
dvander@27	3373	char symname[2sNAMEMAX+16]; / allow space for user defined operators */
dvander@27	3374	funcdisplayname(symname,sym->name);
dvander@27	3375	error(209,symname); /* function should return a value */
dvander@27	3376	} /* if */
dvander@27	3377	} /* if */
dvander@27	3378	endfunc();
dvander@27	3379	sym->codeaddr=code_idx;
dvander@27	3380	sc_attachdocumentation(sym); /* attach collected documenation to the function */
dvander@27	3381	if (litidx) { /* if there are literals defined */
dvander@27	3382	glb_declared+=litidx;
dvander@27	3383	begdseg(); /* flip to DATA segment */
dvander@27	3384	dumplits(); /* dump literal strings */
dvander@27	3385	litidx=0;
dvander@27	3386	} /* if */
dvander@27	3387	testsymbols(&loctab,0,TRUE,TRUE); /* test for unused arguments and labels */
dvander@27	3388	delete_symbols(&loctab,0,TRUE,TRUE); /* clear local variables queue */
dvander@27	3389	assert(loctab.next==NULL);
dvander@27	3390	curfunc=NULL;
dvander@27	3391	if (sc_status==statSKIP) {
dvander@27	3392	sc_status=statWRITE;
dvander@27	3393	code_idx=cidx;
dvander@27	3394	glb_declared=glbdecl;
dvander@27	3395	} /* if */
dvander@27	3396	return TRUE;
dvander@27	3397	}
dvander@27	3398
dvander@27	3399	static int argcompare(arginfo a1,arginfo a2)
dvander@27	3400	{
dvander@27	3401	int result,level,i;
dvander@27	3402
dvander@27	3403	#if 0 /* SourceMod uses case insensitive args for forwards */
dvander@27	3404	result= strcmp(a1->name,a2->name)==0; /* name */
dvander@27	3405	#else
dvander@27	3406	result=1;
dvander@27	3407	#endif
dvander@27	3408	if (result)
dvander@27	3409	result= a1->ident==a2->ident; /* type/class */
dvander@27	3410	if (result)
dvander@27	3411	result= a1->usage==a2->usage; /* "const" flag */
dvander@27	3412	if (result)
dvander@27	3413	result= a1->numtags==a2->numtags; /* tags (number and names) */
dvander@27	3414	for (i=0; result && i<a1->numtags; i++)
dvander@27	3415	result= a1->tags[i]==a2->tags[i];
dvander@27	3416	if (result)
dvander@27	3417	result= a1->numdim==a2->numdim; /* array dimensions & index tags */
dvander@27	3418	for (level=0; result && level<a1->numdim; level++)
dvander@27	3419	result= a1->dim[level]==a2->dim[level];
dvander@27	3420	for (level=0; result && level<a1->numdim; level++)
dvander@27	3421	result= a1->idxtag[level]==a2->idxtag[level];
dvander@27	3422	if (result)
dvander@27	3423	result= a1->hasdefault==a2->hasdefault; /* availability of default value */
dvander@27	3424	if (a1->hasdefault) {
dvander@27	3425	if (a1->ident==iREFARRAY) {
dvander@27	3426	if (result)
dvander@27	3427	result= a1->defvalue.array.size==a2->defvalue.array.size;
dvander@27	3428	if (result)
dvander@27	3429	result= a1->defvalue.array.arraysize==a2->defvalue.array.arraysize;
dvander@27	3430	/* ??? should also check contents of the default array (these troubles
dvander@27	3431	* go away in a 2-pass compiler that forbids double declarations, but
dvander@27	3432	* Pawn currently does not forbid them) */
dvander@27	3433	} else {
dvander@27	3434	if (result) {
dvander@27	3435	if ((a1->hasdefault & uSIZEOF)!=0 \|\| (a1->hasdefault & uTAGOF)!=0)
dvander@27	3436	result= a1->hasdefault==a2->hasdefault
dvander@27	3437	&& strcmp(a1->defvalue.size.symname,a2->defvalue.size.symname)==0
dvander@27	3438	&& a1->defvalue.size.level==a2->defvalue.size.level;
dvander@27	3439	else
dvander@27	3440	result= a1->defvalue.val==a2->defvalue.val;
dvander@27	3441	} /* if */
dvander@27	3442	} /* if */
dvander@27	3443	if (result)
dvander@27	3444	result= a1->defvalue_tag==a2->defvalue_tag;
dvander@27	3445	} /* if */
dvander@27	3446	return result;
dvander@27	3447	}
dvander@27	3448
dvander@27	3449	/* declargs()
dvander@27	3450	*
dvander@27	3451	* This routine adds an entry in the local symbol table for each argument
dvander@27	3452	* found in the argument list. It returns the number of arguments.
dvander@27	3453	*/
dvander@27	3454	static int declargs(symbol *sym,int chkshadow)
dvander@27	3455	{
dvander@27	3456	#define MAXTAGS 16
dvander@27	3457	char *ptr;
dvander@27	3458	int argcnt,oldargcnt,tok,tags[MAXTAGS],numtags;
dvander@27	3459	cell val;
dvander@27	3460	arginfo arg, *arglist;
dvander@27	3461	char name[sNAMEMAX+1];
dvander@27	3462	int ident,fpublic,fconst;
dvander@27	3463	int idx;
dvander@27	3464
dvander@27	3465	/* if the function is already defined earlier, get the number of arguments
dvander@27	3466	* of the existing definition
dvander@27	3467	*/
dvander@27	3468	oldargcnt=0;
dvander@27	3469	if ((sym->usage & uPROTOTYPED)!=0)
dvander@27	3470	while (sym->dim.arglist[oldargcnt].ident!=0)
dvander@27	3471	oldargcnt++;
dvander@27	3472	argcnt=0; /* zero aruments up to now */
dvander@27	3473	ident=iVARIABLE;
dvander@27	3474	numtags=0;
dvander@27	3475	fconst=FALSE;
dvander@27	3476	fpublic= (sym->usage & uPUBLIC)!=0;
dvander@27	3477	/* the '(' parantheses has already been parsed */
dvander@27	3478	if (!matchtoken(')')){
dvander@27	3479	do { /* there are arguments; process them */
dvander@27	3480	/* any legal name increases argument count (and stack offset) */
dvander@27	3481	tok=lex(&val,&ptr);
dvander@27	3482	switch (tok) {
dvander@27	3483	case 0:
dvander@27	3484	/* nothing */
dvander@27	3485	break;
dvander@27	3486	case '&':
dvander@27	3487	if (ident!=iVARIABLE \|\| numtags>0)
dvander@27	3488	error(1,"-identifier-","&");
dvander@27	3489	ident=iREFERENCE;
dvander@27	3490	break;
dvander@27	3491	case tCONST:
dvander@27	3492	if (ident!=iVARIABLE \|\| numtags>0)
dvander@27	3493	error(1,"-identifier-","const");
dvander@27	3494	fconst=TRUE;
dvander@27	3495	break;
dvander@27	3496	case tLABEL:
dvander@27	3497	if (numtags>0)
dvander@27	3498	error(1,"-identifier-","-tagname-");
dvander@27	3499	tags[0]=pc_addtag(ptr);
dvander@27	3500	numtags=1;
dvander@27	3501	break;
dvander@27	3502	case '{':
dvander@27	3503	if (numtags>0)
dvander@27	3504	error(1,"-identifier-","-tagname-");
dvander@27	3505	numtags=0;
dvander@27	3506	while (numtags<MAXTAGS) {
dvander@27	3507	if (!matchtoken('_') && !needtoken(tSYMBOL))
dvander@27	3508	break;
dvander@27	3509	tokeninfo(&val,&ptr);
dvander@27	3510	tags[numtags++]=pc_addtag(ptr);
dvander@27	3511	if (matchtoken('}'))
dvander@27	3512	break;
dvander@27	3513	needtoken(',');
dvander@27	3514	} /* for */
dvander@27	3515	needtoken(':');
dvander@27	3516	tok=tLABEL; /* for outer loop: flag that we have seen a tagname */
dvander@27	3517	break;
dvander@27	3518	case tSYMBOL:
dvander@27	3519	if (argcnt>=sMAXARGS)
dvander@27	3520	error(45); /* too many function arguments */
dvander@27	3521	strcpy(name,ptr); /* save symbol name */
dvander@27	3522	if (name[0]==PUBLIC_CHAR)
dvander@27	3523	error(56,name); /* function arguments cannot be public */
dvander@27	3524	if (numtags==0)
dvander@27	3525	tags[numtags++]=0; /* default tag */
dvander@27	3526	/* Stack layout:
dvander@27	3527	* base + 0*sizeof(cell) == previous "base"
dvander@27	3528	* base + 1*sizeof(cell) == function return address
dvander@27	3529	* base + 2*sizeof(cell) == number of arguments
dvander@27	3530	* base + 3*sizeof(cell) == first argument of the function
dvander@27	3531	* So the offset of each argument is "(argcnt+3) * sizeof(cell)".
dvander@27	3532	*/
dvander@27	3533	doarg(name,ident,(argcnt+3)*sizeof(cell),tags,numtags,fpublic,fconst,chkshadow,&arg);
dvander@27	3534	if (fpublic && arg.hasdefault)
dvander@27	3535	error(59,name); /* arguments of a public function may not have a default value */
dvander@27	3536	if ((sym->usage & uPROTOTYPED)==0) {
dvander@27	3537	/* redimension the argument list, add the entry */
dvander@27	3538	sym->dim.arglist=(arginfo)realloc(sym->dim.arglist,(argcnt+2)sizeof(arginfo));
dvander@27	3539	if (sym->dim.arglist==0)
dvander@27	3540	error(103); /* insufficient memory */
dvander@27	3541	memset(&sym->dim.arglist[argcnt+1],0,sizeof(arginfo)); /* keep the list terminated */
dvander@27	3542	sym->dim.arglist[argcnt]=arg;
dvander@27	3543	} else {
dvander@27	3544	/* check the argument with the earlier definition */
dvander@27	3545	if (argcnt>oldargcnt \|\| !argcompare(&sym->dim.arglist[argcnt],&arg))
dvander@27	3546	error(25); /* function definition does not match prototype */
dvander@27	3547	/* may need to free default array argument and the tag list */
dvander@27	3548	if (arg.ident==iREFARRAY && arg.hasdefault)
dvander@27	3549	free(arg.defvalue.array.data);
dvander@27	3550	else if (arg.ident==iVARIABLE
dvander@27	3551	&& ((arg.hasdefault & uSIZEOF)!=0 \|\| (arg.hasdefault & uTAGOF)!=0))
dvander@27	3552	free(arg.defvalue.size.symname);
dvander@27	3553	free(arg.tags);
dvander@27	3554	} /* if */
dvander@27	3555	argcnt++;
dvander@27	3556	ident=iVARIABLE;
dvander@27	3557	numtags=0;
dvander@27	3558	fconst=FALSE;
dvander@27	3559	break;
dvander@27	3560	case tELLIPS:
dvander@27	3561	if (ident!=iVARIABLE)
dvander@27	3562	error(10); /* illegal function or declaration */
dvander@27	3563	if (numtags==0)
dvander@27	3564	tags[numtags++]=0; /* default tag */
dvander@27	3565	if ((sym->usage & uPROTOTYPED)==0) {
dvander@27	3566	/* redimension the argument list, add the entry iVARARGS */
dvander@27	3567	sym->dim.arglist=(arginfo)realloc(sym->dim.arglist,(argcnt+2)sizeof(arginfo));
dvander@27	3568	if (sym->dim.arglist==0)
dvander@27	3569	error(103); /* insufficient memory */
dvander@27	3570	memset(&sym->dim.arglist[argcnt+1],0,sizeof(arginfo)); /* keep the list terminated */
dvander@27	3571	sym->dim.arglist[argcnt].ident=iVARARGS;
dvander@27	3572	sym->dim.arglist[argcnt].hasdefault=FALSE;
dvander@27	3573	sym->dim.arglist[argcnt].defvalue.val=0;
dvander@27	3574	sym->dim.arglist[argcnt].defvalue_tag=0;
dvander@27	3575	sym->dim.arglist[argcnt].numtags=numtags;
dvander@27	3576	sym->dim.arglist[argcnt].tags=(int)malloc(numtagssizeof tags[0]);
dvander@27	3577	if (sym->dim.arglist[argcnt].tags==NULL)
dvander@27	3578	error(103); /* insufficient memory */
dvander@27	3579	memcpy(sym->dim.arglist[argcnt].tags,tags,numtags*sizeof tags[0]);
dvander@27	3580	} else {
dvander@27	3581	if (argcnt>oldargcnt \|\| sym->dim.arglist[argcnt].ident!=iVARARGS)
dvander@27	3582	error(25); /* function definition does not match prototype */
dvander@27	3583	} /* if */
dvander@27	3584	argcnt++;
dvander@27	3585	break;
dvander@27	3586	default:
dvander@27	3587	error(10); /* illegal function or declaration */
dvander@27	3588	} /* switch */
dvander@27	3589	} while (tok=='&' \|\| tok==tLABEL \|\| tok==tCONST
dvander@27	3590	\|\| tok!=tELLIPS && matchtoken(',')); /* more? */
dvander@27	3591	/* if the next token is not ",", it should be ")" */
dvander@27	3592	needtoken(')');
dvander@27	3593	} /* if */
dvander@27	3594	/* resolve any "sizeof" arguments (now that all arguments are known) */
dvander@27	3595	assert(sym->dim.arglist!=NULL);
dvander@27	3596	arglist=sym->dim.arglist;
dvander@27	3597	for (idx=0; idx<argcnt && arglist[idx].ident!=0; idx++) {
dvander@27	3598	if ((arglist[idx].hasdefault & uSIZEOF)!=0 \|\| (arglist[idx].hasdefault & uTAGOF)!=0) {
dvander@27	3599	int altidx;
dvander@27	3600	/* Find the argument with the name mentioned after the "sizeof". Note
dvander@27	3601	* that we cannot use findloc here because we need the arginfo struct,
dvander@27	3602	* not the symbol.
dvander@27	3603	*/
dvander@27	3604	ptr=arglist[idx].defvalue.size.symname;
dvander@27	3605	assert(ptr!=NULL);
dvander@27	3606	for (altidx=0; altidx<argcnt && strcmp(ptr,arglist[altidx].name)!=0; altidx++)
dvander@27	3607	/* nothing */;
dvander@27	3608	if (altidx>=argcnt) {
dvander@27	3609	error(17,ptr); /* undefined symbol */
dvander@27	3610	} else {
dvander@27	3611	assert(arglist[idx].defvalue.size.symname!=NULL);
dvander@27	3612	/* check the level against the number of dimensions */
dvander@27	3613	if (arglist[idx].defvalue.size.level>0
dvander@27	3614	&& arglist[idx].defvalue.size.level>=arglist[altidx].numdim)
dvander@27	3615	error(28,arglist[idx].name); /* invalid subscript */
dvander@27	3616	/* check the type of the argument whose size to take; for a iVARIABLE
dvander@27	3617	* or a iREFERENCE, this is always 1 (so the code is redundant)
dvander@27	3618	*/
dvander@27	3619	assert(arglist[altidx].ident!=iVARARGS);
dvander@27	3620	if (arglist[altidx].ident!=iREFARRAY && (arglist[idx].hasdefault & uSIZEOF)!=0) {
dvander@27	3621	if ((arglist[idx].hasdefault & uTAGOF)!=0) {
dvander@27	3622	error(81,arglist[idx].name); /* cannot take "tagof" an indexed array */
dvander@27	3623	} else {
dvander@27	3624	assert(arglist[altidx].ident==iVARIABLE \|\| arglist[altidx].ident==iREFERENCE);
dvander@27	3625	error(223,ptr); /* redundant sizeof */
dvander@27	3626	} /* if */
dvander@27	3627	} /* if */
dvander@27	3628	} /* if */
dvander@27	3629	} /* if */
dvander@27	3630	} /* for */
dvander@27	3631
dvander@27	3632	sym->usage\|=uPROTOTYPED;
dvander@27	3633	errorset(sRESET,0); /* reset error flag (clear the "panic mode")*/
dvander@27	3634	return argcnt;
dvander@27	3635	}
dvander@27	3636
dvander@27	3637	/* doarg - declare one argument type
dvander@27	3638	*
dvander@27	3639	* this routine is called from "declargs()" and adds an entry in the local
dvander@27	3640	* symbol table for one argument.
dvander@27	3641	*
dvander@27	3642	* "fpublic" indicates whether the function for this argument list is public.
dvander@27	3643	* The arguments themselves are never public.
dvander@27	3644	*/
dvander@27	3645	static void doarg(char *name,int ident,int offset,int tags[],int numtags,
dvander@27	3646	int fpublic,int fconst,int chkshadow,arginfo *arg)
dvander@27	3647	{
dvander@27	3648	symbol *argsym;
dvander@27	3649	constvalue *enumroot;
dvander@27	3650	cell size;
dvander@27	3651
dvander@27	3652	strcpy(arg->name,name);
dvander@27	3653	arg->hasdefault=FALSE; /* preset (most common case) */
dvander@27	3654	arg->defvalue.val=0; /* clear */
dvander@27	3655	arg->defvalue_tag=0;
dvander@27	3656	arg->numdim=0;
dvander@27	3657	if (matchtoken('[')) {
dvander@27	3658	if (ident==iREFERENCE)
dvander@27	3659	error(67,name); /* illegal declaration ("&name[]" is unsupported) */
dvander@27	3660	do {
dvander@27	3661	if (arg->numdim == sDIMEN_MAX) {
dvander@27	3662	error(53); /* exceeding maximum number of dimensions */
dvander@27	3663	return;
dvander@27	3664	} /* if */
dvander@27	3665	size=needsub(&arg->idxtag[arg->numdim],&enumroot);/* may be zero here, it is a pointer anyway */
dvander@27	3666	#if INT_MAX < LONG_MAX
dvander@27	3667	if (size > INT_MAX)
dvander@27	3668	error(105); /* overflow, exceeding capacity */
dvander@27	3669	#endif
dvander@27	3670	arg->dim[arg->numdim]=(int)size;
dvander@27	3671	arg->numdim+=1;
dvander@27	3672	} while (matchtoken('['));
dvander@27	3673	ident=iREFARRAY; /* "reference to array" (is a pointer) */
dvander@27	3674	if (matchtoken('=')) {
dvander@27	3675	lexpush(); /* initials() needs the "=" token again */
dvander@27	3676	assert(litidx==0); /* at the start of a function, this is reset */
dvander@27	3677	assert(numtags>0);
dvander@27	3678	initials(ident,tags[0],&size,arg->dim,arg->numdim,enumroot);
dvander@27	3679	assert(size>=litidx);
dvander@27	3680	/* allocate memory to hold the initial values */
dvander@27	3681	arg->defvalue.array.data=(cell )malloc(litidxsizeof(cell));
dvander@27	3682	if (arg->defvalue.array.data!=NULL) {
dvander@27	3683	int i;
dvander@27	3684	memcpy(arg->defvalue.array.data,litq,litidx*sizeof(cell));
dvander@27	3685	arg->hasdefault=TRUE; /* argument has default value */
dvander@27	3686	arg->defvalue.array.size=litidx;
dvander@27	3687	arg->defvalue.array.addr=-1;
dvander@27	3688	/* calulate size to reserve on the heap */
dvander@27	3689	arg->defvalue.array.arraysize=1;
dvander@27	3690	for (i=0; i<arg->numdim; i++)
dvander@27	3691	arg->defvalue.array.arraysize*=arg->dim[i];
dvander@27	3692	if (arg->defvalue.array.arraysize < arg->defvalue.array.size)
dvander@27	3693	arg->defvalue.array.arraysize = arg->defvalue.array.size;
dvander@27	3694	} /* if */
dvander@27	3695	litidx=0; /* reset */
dvander@27	3696	} /* if */
dvander@27	3697	} else {
dvander@27	3698	if (matchtoken('=')) {
dvander@27	3699	unsigned char size_tag_token;
dvander@27	3700	assert(ident==iVARIABLE \|\| ident==iREFERENCE);
dvander@27	3701	arg->hasdefault=TRUE; /* argument has a default value */
dvander@27	3702	size_tag_token=(unsigned char)(matchtoken(tSIZEOF) ? uSIZEOF : 0);
dvander@27	3703	if (size_tag_token==0)
dvander@27	3704	size_tag_token=(unsigned char)(matchtoken(tTAGOF) ? uTAGOF : 0);
dvander@27	3705	if (size_tag_token!=0) {
dvander@27	3706	int paranthese;
dvander@27	3707	if (ident==iREFERENCE)
dvander@27	3708	error(66,name); /* argument may not be a reference */
dvander@27	3709	paranthese=0;
dvander@27	3710	while (matchtoken('('))
dvander@27	3711	paranthese++;
dvander@27	3712	if (needtoken(tSYMBOL)) {
dvander@27	3713	/* save the name of the argument whose size id to take */
dvander@27	3714	char *name;
dvander@27	3715	cell val;
dvander@27	3716	tokeninfo(&val,&name);
dvander@27	3717	if ((arg->defvalue.size.symname=duplicatestring(name)) == NULL)
dvander@27	3718	error(103); /* insufficient memory */
dvander@27	3719	arg->defvalue.size.level=0;
dvander@27	3720	if (size_tag_token==uSIZEOF) {
dvander@27	3721	while (matchtoken('[')) {
dvander@27	3722	arg->defvalue.size.level+=(short)1;
dvander@27	3723	needtoken(']');
dvander@27	3724	} /* while */
dvander@27	3725	} /* if */
dvander@27	3726	if (ident==iVARIABLE) /* make sure we set this only if not a reference */
dvander@27	3727	arg->hasdefault \|= size_tag_token; /* uSIZEOF or uTAGOF */
dvander@27	3728	} /* if */
dvander@27	3729	while (paranthese--)
dvander@27	3730	needtoken(')');
dvander@27	3731	} else {
dvander@27	3732	constexpr(&arg->defvalue.val,&arg->defvalue_tag,NULL);
dvander@27	3733	assert(numtags>0);
dvander@27	3734	if (!matchtag(tags[0],arg->defvalue_tag,TRUE))
dvander@27	3735	error(213); /* tagname mismatch */
dvander@27	3736	} /* if */
dvander@27	3737	} /* if */
dvander@27	3738	} /* if */
dvander@27	3739	arg->ident=(char)ident;
dvander@27	3740	arg->usage=(char)(fconst ? uCONST : 0);
dvander@27	3741	arg->numtags=numtags;
dvander@27	3742	arg->tags=(int)malloc(numtagssizeof tags[0]);
dvander@27	3743	if (arg->tags==NULL)
dvander@27	3744	error(103); /* insufficient memory */
dvander@27	3745	memcpy(arg->tags,tags,numtags*sizeof tags[0]);
dvander@27	3746	argsym=findloc(name);
dvander@27	3747	if (argsym!=NULL) {
dvander@27	3748	error(21,name); /* symbol already defined */
dvander@27	3749	} else {
dvander@27	3750	if (chkshadow && (argsym=findglb(name,sSTATEVAR))!=NULL && argsym->ident!=iFUNCTN)
dvander@27	3751	error(219,name); /* variable shadows another symbol */
dvander@27	3752	/* add details of type and address */
dvander@27	3753	assert(numtags>0);
dvander@27	3754	argsym=addvariable(name,offset,ident,sLOCAL,tags[0],
dvander@27	3755	arg->dim,arg->numdim,arg->idxtag);
dvander@27	3756	argsym->compound=0;
dvander@27	3757	if (ident==iREFERENCE)
dvander@27	3758	argsym->usage\|=uREAD; /* because references are passed back */
dvander@27	3759	if (fpublic)
dvander@27	3760	argsym->usage\|=uREAD; /* arguments of public functions are always "used" */
dvander@27	3761	if (fconst)
dvander@27	3762	argsym->usage\|=uCONST;
dvander@27	3763	} /* if */
dvander@27	3764	}
dvander@27	3765
dvander@27	3766	static int count_referrers(symbol *entry)
dvander@27	3767	{
dvander@27	3768	int i,count;
dvander@27	3769
dvander@27	3770	count=0;
dvander@27	3771	for (i=0; i<entry->numrefers; i++)
dvander@27	3772	if (entry->refer[i]!=NULL)
dvander@27	3773	count++;
dvander@27	3774	return count;
dvander@27	3775	}
dvander@27	3776
dvander@27	3777	#if !defined SC_LIGHT
dvander@27	3778	static int find_xmltag(char source,char xmltag,char xmlparam,char xmlvalue,
dvander@27	3779	char *outer_start,int outer_length,
dvander@27	3780	char *inner_start,int inner_length)
dvander@27	3781	{
dvander@27	3782	char ptr,inner_end;
dvander@27	3783	int xmltag_len,xmlparam_len,xmlvalue_len;
dvander@27	3784	int match;
dvander@27	3785
dvander@27	3786	assert(source!=NULL);
dvander@27	3787	assert(xmltag!=NULL);
dvander@27	3788	assert(outer_start!=NULL);
dvander@27	3789	assert(outer_length!=NULL);
dvander@27	3790	assert(inner_start!=NULL);
dvander@27	3791	assert(inner_length!=NULL);
dvander@27	3792
dvander@27	3793	/* both NULL or both non-NULL */
dvander@27	3794	assert(xmlvalue!=NULL && xmlparam!=NULL \|\| xmlvalue==NULL && xmlparam==NULL);
dvander@27	3795
dvander@27	3796	xmltag_len=strlen(xmltag);
dvander@27	3797	xmlparam_len= (xmlparam!=NULL) ? strlen(xmlparam) : 0;
dvander@27	3798	xmlvalue_len= (xmlvalue!=NULL) ? strlen(xmlvalue) : 0;
dvander@27	3799	ptr=source;
dvander@27	3800	/* find an opening '<' */
dvander@27	3801	while ((ptr=strchr(ptr,'<'))!=NULL) {
dvander@27	3802	outer_start=ptr; / be optimistic... */
dvander@27	3803	match=FALSE; /* ...and pessimistic at the same time */
dvander@27	3804	ptr++; /* skip '<' */
dvander@27	3805	while (ptr!='\0' && ptr<=' ')
dvander@27	3806	ptr++; /* skip white space */
dvander@27	3807	if (strncmp(ptr,xmltag,xmltag_len)==0 && ((ptr+xmltag_len)<=' ' \|\| (ptr+xmltag_len)=='>')) {
dvander@27	3808	/* xml tag found, optionally check the parameter */
dvander@27	3809	ptr+=xmltag_len;
dvander@27	3810	while (ptr!='\0' && ptr<=' ')
dvander@27	3811	ptr++; /* skip white space */
dvander@27	3812	if (xmlparam!=NULL) {
dvander@27	3813	if (strncmp(ptr,xmlparam,xmlparam_len)==0 && ((ptr+xmlparam_len)<=' ' \|\| (ptr+xmlparam_len)=='=')) {
dvander@27	3814	ptr+=xmlparam_len;
dvander@27	3815	while (ptr!='\0' && ptr<=' ')
dvander@27	3816	ptr++; /* skip white space */
dvander@27	3817	if (*ptr=='=') {
dvander@27	3818	ptr++; /* skip '=' */
dvander@27	3819	while (ptr!='\0' && ptr<=' ')
dvander@27	3820	ptr++; /* skip white space */
dvander@27	3821	if (ptr=='"' \|\| ptr=='\'')
dvander@27	3822	ptr++; /* skip " or ' */
dvander@27	3823	assert(xmlvalue!=NULL);
dvander@27	3824	if (strncmp(ptr,xmlvalue,xmlvalue_len)==0
dvander@27	3825	&& (*(ptr+xmlvalue_len)<=' '
dvander@27	3826	\|\| *(ptr+xmlvalue_len)=='>'
dvander@27	3827	\|\| *(ptr+xmlvalue_len)=='"'
dvander@27	3828	\|\| *(ptr+xmlvalue_len)=='\''))
dvander@27	3829	match=TRUE; /* found it */
dvander@27	3830	} /* if */
dvander@27	3831	} /* if */
dvander@27	3832	} else {
dvander@27	3833	match=TRUE; /* don't check the parameter */
dvander@27	3834	} /* if */
dvander@27	3835	} /* if */
dvander@27	3836	if (match) {
dvander@27	3837	/* now find the end of the opening tag */
dvander@27	3838	while (ptr!='\0' && ptr!='>')
dvander@27	3839	ptr++;
dvander@27	3840	if (*ptr=='>')
dvander@27	3841	ptr++;
dvander@27	3842	while (ptr!='\0' && ptr<=' ')
dvander@27	3843	ptr++; /* skip white space */
dvander@27	3844	*inner_start=ptr;
dvander@27	3845	/* find the start of the closing tag (assume no nesting) */
dvander@27	3846	while ((ptr=strchr(ptr,'<'))!=NULL) {
dvander@27	3847	inner_end=ptr;
dvander@27	3848	ptr++; /* skip '<' */
dvander@27	3849	while (ptr!='\0' && ptr<=' ')
dvander@27	3850	ptr++; /* skip white space */
dvander@27	3851	if (*ptr=='/') {
dvander@27	3852	ptr++; /* skip / */
dvander@27	3853	while (ptr!='\0' && ptr<=' ')
dvander@27	3854	ptr++; /* skip white space */
dvander@27	3855	if (strncmp(ptr,xmltag,xmltag_len)==0 && ((ptr+xmltag_len)<=' ' \|\| (ptr+xmltag_len)=='>')) {
dvander@27	3856	/* find the end of the closing tag */
dvander@27	3857	while (ptr!='\0' && ptr!='>')
dvander@27	3858	ptr++;
dvander@27	3859	if (*ptr=='>')
dvander@27	3860	ptr++;
dvander@27	3861	/* set the lengths of the inner and outer segment */
dvander@27	3862	assert(*inner_start!=NULL);
dvander@27	3863	inner_length=(int)(inner_end-inner_start);
dvander@27	3864	assert(*outer_start!=NULL);
dvander@27	3865	outer_length=(int)(ptr-outer_start);
dvander@27	3866	break; /* break out of the loop */
dvander@27	3867	} /* if */
dvander@27	3868	} /* if */
dvander@27	3869	} /* while */
dvander@27	3870	return TRUE;
dvander@27	3871	} /* if */
dvander@27	3872	} /* while */
dvander@27	3873	return FALSE; /* not found */
dvander@27	3874	}
dvander@27	3875
dvander@27	3876	static char xmlencode(char dest,char *source)
dvander@27	3877	{
dvander@27	3878	char temp[2sNAMEMAX+20],ptr;
dvander@27	3879
dvander@27	3880	/* replace < by < and such; normally, such a symbol occurs at most once in
dvander@27	3881	* a symbol name (e.g. "operator<")
dvander@27	3882	*/
dvander@27	3883	ptr=temp;
dvander@27	3884	while (*source!='\0') {
dvander@27	3885	switch (*source) {
dvander@27	3886	case '<':
dvander@27	3887	strcpy(ptr,"<");
dvander@27	3888	ptr+=4;
dvander@27	3889	break;
dvander@27	3890	case '>':
dvander@27	3891	strcpy(ptr,">");
dvander@27	3892	ptr+=4;
dvander@27	3893	break;
dvander@27	3894	case '&':
dvander@27	3895	strcpy(ptr,"&");
dvander@27	3896	ptr+=5;
dvander@27	3897	break;
dvander@27	3898	default:
dvander@27	3899	ptr++=source;
dvander@27	3900	} /* switch */
dvander@27	3901	source++;
dvander@27	3902	} /* while */
dvander@27	3903	*ptr='\0';
dvander@27	3904	strcpy(dest,temp);
dvander@27	3905	return dest;
dvander@27	3906	}
dvander@27	3907
dvander@27	3908	static void make_report(symbol root,FILE log,char *sourcefile)
dvander@27	3909	{
dvander@27	3910	char symname[_MAX_PATH];
dvander@27	3911	int i,arg;
dvander@27	3912	symbol sym,ref;
dvander@27	3913	constvalue *tagsym;
dvander@27	3914	constvalue *enumroot;
dvander@27	3915	char *ptr;
dvander@27	3916
dvander@27	3917	/* adapt the installation directory */
dvander@27	3918	strcpy(symname,sc_rootpath);
dvander@27	3919	#if DIRSEP_CHAR=='\\'
dvander@27	3920	while ((ptr=strchr(symname,':'))!=NULL)
dvander@27	3921	*ptr='\|';
dvander@27	3922	while ((ptr=strchr(symname,DIRSEP_CHAR))!=NULL)
dvander@27	3923	*ptr='/';
dvander@27	3924	#endif
dvander@27	3925
dvander@27	3926	/* the XML header */
dvander@27	3927	fprintf(log,"<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n");
dvander@27	3928	fprintf(log,"<?xml-stylesheet href=\"file:///%s/xml/pawndoc.xsl\" type=\"text/xsl\"?>\n",symname);
dvander@27	3929	fprintf(log,"<doc source=\"%s\">\n",sourcefile);
dvander@27	3930	ptr=strrchr(sourcefile,DIRSEP_CHAR);
dvander@27	3931	if (ptr!=NULL)
dvander@27	3932	ptr++;
dvander@27	3933	else
dvander@27	3934	ptr=sourcefile;
dvander@27	3935	fprintf(log,"\t<assembly>\n\t\t<name>%s</name>\n\t</assembly>\n",ptr);
dvander@27	3936
dvander@27	3937	/* attach the global documentation, if any */
dvander@27	3938	if (sc_documentation!=NULL) {
dvander@27	3939	fprintf(log,"\n\t<!-- general -->\n");
dvander@27	3940	fprintf(log,"\t<general>\n\t\t");
dvander@27	3941	fputs(sc_documentation,log);
dvander@27	3942	fprintf(log,"\n\t</general>\n\n");
dvander@27	3943	} /* if */
dvander@27	3944
dvander@27	3945	/* use multiple passes to print constants variables and functions in
dvander@27	3946	* separate sections
dvander@27	3947	*/
dvander@27	3948	fprintf(log,"\t<members>\n");
dvander@27	3949
dvander@27	3950	fprintf(log,"\n\t\t<!-- enumerations -->\n");
dvander@27	3951	for (sym=root->next; sym!=NULL; sym=sym->next) {
dvander@27	3952	if (sym->parent!=NULL)
dvander@27	3953	continue; /* hierarchical data type */
dvander@27	3954	assert(sym->ident==iCONSTEXPR \|\| sym->ident==iVARIABLE
dvander@27	3955	\|\| sym->ident==iARRAY \|\| sym->ident==iFUNCTN);
dvander@27	3956	if (sym->ident!=iCONSTEXPR \|\| (sym->usage & uENUMROOT)==0)
dvander@27	3957	continue;
dvander@27	3958	if ((sym->usage & uREAD)==0)
dvander@27	3959	continue;
dvander@27	3960	fprintf(log,"\t\t<member name=\"T:%s\" value=\"%ld\">\n",funcdisplayname(symname,sym->name),sym->addr);
dvander@27	3961	if (sym->tag!=0) {
dvander@27	3962	tagsym=find_tag_byval(sym->tag);
dvander@27	3963	assert(tagsym!=NULL);
dvander@27	3964	fprintf(log,"\t\t\t<tagname value=\"%s\"/>\n",tagsym->name);
dvander@27	3965	} /* if */
dvander@27	3966	/* browse through all fields */
dvander@27	3967	if ((enumroot=sym->dim.enumlist)!=NULL) {
dvander@27	3968	enumroot=enumroot->next; /* skip root */
dvander@27	3969	while (enumroot!=NULL) {
dvander@27	3970	fprintf(log,"\t\t\t<member name=\"C:%s\" value=\"%ld\">\n",funcdisplayname(symname,enumroot->name),enumroot->value);
dvander@27	3971	/* find the constant with this name and get the tag */
dvander@27	3972	ref=findglb(enumroot->name,sGLOBAL);
dvander@27	3973	if (ref!=NULL) {
dvander@27	3974	if (ref->x.tags.index!=0) {
dvander@27	3975	tagsym=find_tag_byval(ref->x.tags.index);
dvander@27	3976	assert(tagsym!=NULL);
dvander@27	3977	fprintf(log,"\t\t\t\t<tagname value=\"%s\"/>\n",tagsym->name);
dvander@27	3978	} /* if */
dvander@27	3979	if (ref->dim.array.length!=1)
dvander@27	3980	fprintf(log,"\t\t\t\t<size value=\"%ld\"/>\n",(long)ref->dim.array.length);
dvander@27	3981	} /* if */
dvander@27	3982	fprintf(log,"\t\t\t</member>\n");
dvander@27	3983	enumroot=enumroot->next;
dvander@27	3984	} /* while */
dvander@27	3985	} /* if */
dvander@27	3986	assert(sym->refer!=NULL);
dvander@27	3987	for (i=0; i<sym->numrefers; i++) {
dvander@27	3988	if ((ref=sym->refer[i])!=NULL)
dvander@27	3989	fprintf(log,"\t\t\t<referrer name=\"%s\"/>\n",xmlencode(symname,funcdisplayname(symname,ref->name)));
dvander@27	3990	} /* for */
dvander@27	3991	if (sym->documentation!=NULL)
dvander@27	3992	fprintf(log,"\t\t\t%s\n",sym->documentation);
dvander@27	3993	fprintf(log,"\t\t</member>\n");
dvander@27	3994	} /* for */
dvander@27	3995
dvander@27	3996	fprintf(log,"\n\t\t<!-- constants -->\n");
dvander@27	3997	for (sym=root->next; sym!=NULL; sym=sym->next) {
dvander@27	3998	if (sym->parent!=NULL)
dvander@27	3999	continue; /* hierarchical data type */
dvander@27	4000	assert(sym->ident==iCONSTEXPR \|\| sym->ident==iVARIABLE
dvander@27	4001	\|\| sym->ident==iARRAY \|\| sym->ident==iFUNCTN);
dvander@27	4002	if (sym->ident!=iCONSTEXPR)
dvander@27	4003	continue;
dvander@27	4004	if ((sym->usage & uREAD)==0 \|\| (sym->usage & (uENUMFIELD \| uENUMROOT))!=0)
dvander@27	4005	continue;
dvander@27	4006	fprintf(log,"\t\t<member name=\"C:%s\" value=\"%ld\">\n",funcdisplayname(symname,sym->name),sym->addr);
dvander@27	4007	if (sym->tag!=0) {
dvander@27	4008	tagsym=find_tag_byval(sym->tag);
dvander@27	4009	assert(tagsym!=NULL);
dvander@27	4010	fprintf(log,"\t\t\t<tagname value=\"%s\"/>\n",tagsym->name);
dvander@27	4011	} /* if */
dvander@27	4012	assert(sym->refer!=NULL);
dvander@27	4013	for (i=0; i<sym->numrefers; i++) {
dvander@27	4014	if ((ref=sym->refer[i])!=NULL)
dvander@27	4015	fprintf(log,"\t\t\t<referrer name=\"%s\"/>\n",xmlencode(symname,funcdisplayname(symname,ref->name)));
dvander@27	4016	} /* for */
dvander@27	4017	if (sym->documentation!=NULL)
dvander@27	4018	fprintf(log,"\t\t\t%s\n",sym->documentation);
dvander@27	4019	fprintf(log,"\t\t</member>\n");
dvander@27	4020	} /* for */
dvander@27	4021
dvander@27	4022	fprintf(log,"\n\t\t<!-- variables -->\n");
dvander@27	4023	for (sym=root->next; sym!=NULL; sym=sym->next) {
dvander@27	4024	if (sym->parent!=NULL)
dvander@27	4025	continue; /* hierarchical data type */
dvander@27	4026	if (sym->ident!=iVARIABLE && sym->ident!=iARRAY)
dvander@27	4027	continue;
dvander@27	4028	fprintf(log,"\t\t<member name=\"F:%s\">\n",funcdisplayname(symname,sym->name));
dvander@27	4029	if (sym->tag!=0) {
dvander@27	4030	tagsym=find_tag_byval(sym->tag);
dvander@27	4031	assert(tagsym!=NULL);
dvander@27	4032	fprintf(log,"\t\t\t<tagname value=\"%s\"/>\n",tagsym->name);
dvander@27	4033	} /* if */
dvander@27	4034	assert(sym->refer!=NULL);
dvander@27	4035	if ((sym->usage & uPUBLIC)!=0)
dvander@27	4036	fprintf(log,"\t\t\t<attribute name=\"public\"/>\n");
dvander@27	4037	for (i=0; i<sym->numrefers; i++) {
dvander@27	4038	if ((ref=sym->refer[i])!=NULL)
dvander@27	4039	fprintf(log,"\t\t\t<referrer name=\"%s\"/>\n",xmlencode(symname,funcdisplayname(symname,ref->name)));
dvander@27	4040	} /* for */
dvander@27	4041	if (sym->documentation!=NULL)
dvander@27	4042	fprintf(log,"\t\t\t%s\n",sym->documentation);
dvander@27	4043	fprintf(log,"\t\t</member>\n");
dvander@27	4044	} /* for */
dvander@27	4045
dvander@27	4046	fprintf(log,"\n\t\t<!-- functions -->\n");
dvander@27	4047	for (sym=root->next; sym!=NULL; sym=sym->next) {
dvander@27	4048	if (sym->parent!=NULL)
dvander@27	4049	continue; /* hierarchical data type */
dvander@27	4050	if (sym->ident!=iFUNCTN)
dvander@27	4051	continue;
dvander@27	4052	if ((sym->usage & (uREAD \| uNATIVE))==uNATIVE)
dvander@27	4053	continue; /* unused native function */
dvander@27	4054	funcdisplayname(symname,sym->name);
dvander@27	4055	xmlencode(symname,symname);
dvander@27	4056	fprintf(log,"\t\t<member name=\"M:%s\" syntax=\"%s(",symname,symname);
dvander@27	4057	/* print only the names of the parameters between the parentheses */
dvander@27	4058	assert(sym->dim.arglist!=NULL);
dvander@27	4059	for (arg=0; sym->dim.arglist[arg].ident!=0; arg++) {
dvander@27	4060	int dim;
dvander@27	4061	if (arg>0)
dvander@27	4062	fprintf(log,", ");
dvander@27	4063	switch (sym->dim.arglist[arg].ident) {
dvander@27	4064	case iVARIABLE:
dvander@27	4065	fprintf(log,"%s",sym->dim.arglist[arg].name);
dvander@27	4066	break;
dvander@27	4067	case iREFERENCE:
dvander@27	4068	fprintf(log,"&%s",sym->dim.arglist[arg].name);
dvander@27	4069	break;
dvander@27	4070	case iREFARRAY:
dvander@27	4071	fprintf(log,"%s",sym->dim.arglist[arg].name);
dvander@27	4072	for (dim=0; dim<sym->dim.arglist[arg].numdim;dim++)
dvander@27	4073	fprintf(log,"[]");
dvander@27	4074	break;
dvander@27	4075	case iVARARGS:
dvander@27	4076	fprintf(log,"...");
dvander@27	4077	break;
dvander@27	4078	} /* switch */
dvander@27	4079	} /* for */
dvander@27	4080	/* ??? should also print an "array return" size */
dvander@27	4081	fprintf(log,")\">\n");
dvander@27	4082	if (sym->tag!=0) {
dvander@27	4083	tagsym=find_tag_byval(sym->tag);
dvander@27	4084	assert(tagsym!=NULL);
dvander@27	4085	fprintf(log,"\t\t\t<tagname value=\"%s\"/>\n",tagsym->name);
dvander@27	4086	} /* if */
dvander@27	4087	/* check whether this function is called from the outside */
dvander@27	4088	if ((sym->usage & uNATIVE)!=0)
dvander@27	4089	fprintf(log,"\t\t\t<attribute name=\"native\"/>\n");
dvander@27	4090	if ((sym->usage & uPUBLIC)!=0)
dvander@27	4091	fprintf(log,"\t\t\t<attribute name=\"public\"/>\n");
dvander@27	4092	if (strcmp(sym->name,uMAINFUNC)==0 \|\| strcmp(sym->name,uENTRYFUNC)==0)
dvander@27	4093	fprintf(log,"\t\t\t<attribute name=\"entry\"/>\n");
dvander@27	4094	if ((sym->usage & uNATIVE)==0)
dvander@27	4095	fprintf(log,"\t\t\t<stacksize value=\"%ld\"/>\n",(long)sym->x.stacksize);
dvander@27	4096	if (sym->states!=NULL) {
dvander@27	4097	constvalue *stlist=sym->states->next;
dvander@27	4098	assert(stlist!=NULL); /* there should be at least one state item */
dvander@27	4099	while (stlist!=NULL && stlist->index==-1)
dvander@27	4100	stlist=stlist->next;
dvander@27	4101	assert(stlist!=NULL); /* state id should be found */
dvander@27	4102	i=state_getfsa(stlist->index);
dvander@27	4103	assert(i>=0); /* automaton 0 exists */
dvander@27	4104	stlist=automaton_findid(i);
dvander@27	4105	assert(stlist!=NULL); /* automaton should be found */
dvander@27	4106	fprintf(log,"\t\t\t<automaton name=\"%s\"/>\n", strlen(stlist->name)>0 ? stlist->name : "(anonymous)");
dvander@27	4107	//??? dump state decision table
dvander@27	4108	} /* if */
dvander@27	4109	assert(sym->refer!=NULL);
dvander@27	4110	for (i=0; i<sym->numrefers; i++)
dvander@27	4111	if ((ref=sym->refer[i])!=NULL)
dvander@27	4112	fprintf(log,"\t\t\t<referrer name=\"%s\"/>\n",xmlencode(symname,funcdisplayname(symname,ref->name)));
dvander@27	4113	/* print all symbols that are required for this function to compile */
dvander@27	4114	for (ref=root->next; ref!=NULL; ref=ref->next) {
dvander@27	4115	if (ref==sym)
dvander@27	4116	continue;
dvander@27	4117	for (i=0; i<ref->numrefers; i++)
dvander@27	4118	if (ref->refer[i]==sym)
dvander@27	4119	fprintf(log,"\t\t\t<dependency name=\"%s\"/>\n",xmlencode(symname,funcdisplayname(symname,ref->name)));
dvander@27	4120	} /* for */
dvander@27	4121	/* print parameter list, with tag & const information, plus descriptions */
dvander@27	4122	assert(sym->dim.arglist!=NULL);
dvander@27	4123	for (arg=0; sym->dim.arglist[arg].ident!=0; arg++) {
dvander@27	4124	int dim,paraminfo;
dvander@27	4125	char outer_start,inner_start;
dvander@27	4126	int outer_length,inner_length;
dvander@27	4127	if (sym->dim.arglist[arg].ident==iVARARGS)
dvander@27	4128	fprintf(log,"\t\t\t<param name=\"...\">\n");
dvander@27	4129	else
dvander@27	4130	fprintf(log,"\t\t\t<param name=\"%s\">\n",sym->dim.arglist[arg].name);
dvander@27	4131	/* print the tag name(s) for each parameter */
dvander@27	4132	assert(sym->dim.arglist[arg].numtags>0);
dvander@27	4133	assert(sym->dim.arglist[arg].tags!=NULL);
dvander@27	4134	paraminfo=(sym->dim.arglist[arg].numtags>1 \|\| sym->dim.arglist[arg].tags[0]!=0)
dvander@27	4135	\|\| sym->dim.arglist[arg].ident==iREFERENCE
dvander@27	4136	\|\| sym->dim.arglist[arg].ident==iREFARRAY;
dvander@27	4137	if (paraminfo)
dvander@27	4138	fprintf(log,"\t\t\t\t<paraminfo>");
dvander@27	4139	if (sym->dim.arglist[arg].numtags>1 \|\| sym->dim.arglist[arg].tags[0]!=0) {
dvander@27	4140	assert(paraminfo);
dvander@27	4141	if (sym->dim.arglist[arg].numtags>1)
dvander@27	4142	fprintf(log," {");
dvander@27	4143	for (i=0; i<sym->dim.arglist[arg].numtags; i++) {
dvander@27	4144	if (i>0)
dvander@27	4145	fprintf(log,",");
dvander@27	4146	tagsym=find_tag_byval(sym->dim.arglist[arg].tags[i]);
dvander@27	4147	assert(tagsym!=NULL);
dvander@27	4148	fprintf(log,"%s",tagsym->name);
dvander@27	4149	} /* for */
dvander@27	4150	if (sym->dim.arglist[arg].numtags>1)
dvander@27	4151	fprintf(log,"}");
dvander@27	4152	} /* if */
dvander@27	4153	switch (sym->dim.arglist[arg].ident) {
dvander@27	4154	case iREFERENCE:
dvander@27	4155	fprintf(log," &");
dvander@27	4156	break;
dvander@27	4157	case iREFARRAY:
dvander@27	4158	fprintf(log," ");
dvander@27	4159	for (dim=0; dim<sym->dim.arglist[arg].numdim; dim++) {
dvander@27	4160	if (sym->dim.arglist[arg].dim[dim]==0) {
dvander@27	4161	fprintf(log,"[]");
dvander@27	4162	} else {
dvander@27	4163	//??? find index tag
dvander@27	4164	fprintf(log,"[%d]",sym->dim.arglist[arg].dim[dim]);
dvander@27	4165	} /* if */
dvander@27	4166	} /* for */
dvander@27	4167	break;
dvander@27	4168	} /* switch */
dvander@27	4169	if (paraminfo)
dvander@27	4170	fprintf(log," </paraminfo>\n");
dvander@27	4171	/* print the user description of the parameter (parse through
dvander@27	4172	* sym->documentation)
dvander@27	4173	*/
dvander@27	4174	if (sym->documentation!=NULL
dvander@27	4175	&& find_xmltag(sym->documentation, "param", "name", sym->dim.arglist[arg].name,
dvander@27	4176	&outer_start, &outer_length, &inner_start, &inner_length))
dvander@27	4177	{
dvander@27	4178	char *tail;
dvander@27	4179	fprintf(log,"\t\t\t\t%.*s\n",inner_length,inner_start);
dvander@27	4180	/* delete from documentation string */
dvander@27	4181	tail=outer_start+outer_length;
dvander@27	4182	memmove(outer_start,tail,strlen(tail)+1);
dvander@27	4183	} /* if */
dvander@27	4184	fprintf(log,"\t\t\t</param>\n");
dvander@27	4185	} /* for */
dvander@27	4186	if (sym->documentation!=NULL)
dvander@27	4187	fprintf(log,"\t\t\t%s\n",sym->documentation);
dvander@27	4188	fprintf(log,"\t\t</member>\n");
dvander@27	4189	} /* for */
dvander@27	4190
dvander@27	4191	fprintf(log,"\n\t</members>\n");
dvander@27	4192	fprintf(log,"</doc>\n");
dvander@27	4193	}
dvander@27	4194	#endif
dvander@27	4195
dvander@27	4196	/* Every symbol has a referrer list, that contains the functions that use
dvander@27	4197	* the symbol. Now, if function "apple" is accessed by functions "banana" and
dvander@27	4198	* "citron", but neither function "banana" nor "citron" are used by anyone
dvander@27	4199	* else, then, by inference, function "apple" is not used either.
dvander@27	4200	*/
dvander@27	4201	static void reduce_referrers(symbol *root)
dvander@27	4202	{
dvander@27	4203	int i,restart;
dvander@27	4204	symbol sym,ref;
dvander@27	4205
dvander@27	4206	do {
dvander@27	4207	restart=0;
dvander@27	4208	for (sym=root->next; sym!=NULL; sym=sym->next) {
dvander@27	4209	if (sym->parent!=NULL)
dvander@27	4210	continue; /* hierarchical data type */
dvander@27	4211	if (sym->ident==iFUNCTN
dvander@27	4212	&& (sym->usage & uNATIVE)==0
dvander@27	4213	&& (sym->usage & uPUBLIC)==0 && strcmp(sym->name,uMAINFUNC)!=0 && strcmp(sym->name,uENTRYFUNC)!=0
dvander@27	4214	&& count_referrers(sym)==0)
dvander@27	4215	{
dvander@27	4216	sym->usage&=~(uREAD \| uWRITTEN); /* erase usage bits if there is no referrer */
dvander@27	4217	/* find all symbols that are referred by this symbol */
dvander@27	4218	for (ref=root->next; ref!=NULL; ref=ref->next) {
dvander@27	4219	if (ref->parent!=NULL)
dvander@27	4220	continue; /* hierarchical data type */
dvander@27	4221	assert(ref->refer!=NULL);
dvander@27	4222	for (i=0; i<ref->numrefers && ref->refer[i]!=sym; i++)
dvander@27	4223	/* nothing */;
dvander@27	4224	if (i<ref->numrefers) {
dvander@27	4225	assert(ref->refer[i]==sym);
dvander@27	4226	ref->refer[i]=NULL;
dvander@27	4227	restart++;
dvander@27	4228	} /* if */
dvander@27	4229	} /* for */
dvander@27	4230	} else if ((sym->ident==iVARIABLE \|\| sym->ident==iARRAY)
dvander@27	4231	&& (sym->usage & uPUBLIC)==0
dvander@27	4232	&& sym->parent==NULL
dvander@27	4233	&& count_referrers(sym)==0)
dvander@27	4234	{
dvander@27	4235	sym->usage&=~(uREAD \| uWRITTEN); /* erase usage bits if there is no referrer */
dvander@27	4236	} /* if */
dvander@27	4237	} /* for */
dvander@27	4238	/* after removing a symbol, check whether more can be removed */
dvander@27	4239	} while (restart>0);
dvander@27	4240	}
dvander@27	4241
dvander@27	4242	#if !defined SC_LIGHT
dvander@27	4243	static long max_stacksize_recurse(symbol sourcesym,symbol sym,long basesize,int pubfuncparams,int recursion)
dvander@27	4244	{
dvander@27	4245	long size,maxsize;
dvander@27	4246	int i;
dvander@27	4247
dvander@27	4248	assert(sym!=NULL);
dvander@27	4249	assert(sym->ident==iFUNCTN);
dvander@27	4250	assert((sym->usage & uNATIVE)==0);
dvander@27	4251	assert(recursion!=NULL);
dvander@27	4252
dvander@27	4253	maxsize=sym->x.stacksize;
dvander@27	4254	for (i=0; i<sym->numrefers; i++) {
dvander@27	4255	if (sym->refer[i]!=NULL) {
dvander@27	4256	assert(sym->refer[i]->ident==iFUNCTN);
dvander@27	4257	assert((sym->refer[i]->usage & uNATIVE)==0); /* a native function cannot refer to a user-function */
dvander@27	4258	if (sym->refer[i]==sourcesym) { /* recursion detection */
dvander@27	4259	*recursion=1;
dvander@27	4260	break; /* recursion was detected, quit loop */
dvander@27	4261	} /* if */
dvander@27	4262	size=max_stacksize_recurse(sourcesym,sym->refer[i],sym->x.stacksize,pubfuncparams,recursion);
dvander@27	4263	if (maxsize<size)
dvander@27	4264	maxsize=size;
dvander@27	4265	} /* if */
dvander@27	4266	} /* for */
dvander@27	4267
dvander@27	4268	if ((sym->usage & uPUBLIC)!=0) {
dvander@27	4269	/* Find out how many parameters a public function has, then see if this
dvander@27	4270	* is bigger than some maximum
dvander@27	4271	*/
dvander@27	4272	arginfo *arg=sym->dim.arglist;
dvander@27	4273	int count=0;
dvander@27	4274	assert(arg!=0);
dvander@27	4275	while (arg->ident!=0) {
dvander@27	4276	count++;
dvander@27	4277	arg++;
dvander@27	4278	} /* while */
dvander@27	4279	assert(pubfuncparams!=0);
dvander@27	4280	if (count>*pubfuncparams)
dvander@27	4281	*pubfuncparams=count;
dvander@27	4282	} /* if */
dvander@27	4283
dvander@27	4284	return maxsize+basesize;
dvander@27	4285	}
dvander@27	4286
dvander@27	4287	static long max_stacksize(symbol root,int recursion)
dvander@27	4288	{
dvander@27	4289	/* Loop over all non-native functions. For each function, loop
dvander@27	4290	* over all of its referrers, accumulating the stack requirements.
dvander@27	4291	* Detect (indirect) recursion with a "mark-and-sweep" algorithm.
dvander@27	4292	* I (mis-)use the "compound" field of the symbol structure for
dvander@27	4293	* the marker, as this field is unused for functions.
dvander@27	4294	*
dvander@27	4295	* Note that the stack is shared with the heap. A host application
dvander@27	4296	* may "eat" cells from the heap as well, through amx_Allot(). The
dvander@27	4297	* stack requirements are thus only an estimate.
dvander@27	4298	*/
dvander@27	4299	long size,maxsize;
dvander@27	4300	int maxparams;
dvander@27	4301	symbol *sym;
dvander@27	4302
dvander@27	4303	assert(root!=NULL);
dvander@27	4304	assert(recursion!=NULL);
dvander@27	4305	#if !defined NDEBUG
dvander@27	4306	for (sym=root->next; sym!=NULL; sym=sym->next)
dvander@27	4307	if (sym->ident==iFUNCTN)
dvander@27	4308	assert(sym->compound==0);
dvander@27	4309	#endif
dvander@27	4310
dvander@27	4311	maxsize=0;
dvander@27	4312	maxparams=0;
dvander@27	4313	recursion=0; / assume no recursion */
dvander@27	4314	for (sym=root->next; sym!=NULL; sym=sym->next) {
dvander@27	4315	/* drop out if this is not a user-implemented function */
dvander@27	4316	if (sym->ident!=iFUNCTN \|\| (sym->usage & uNATIVE)!=0)
dvander@27	4317	continue;
dvander@27	4318	/* accumulate stack size for this symbol */
dvander@27	4319	size=max_stacksize_recurse(sym,sym,0L,&maxparams,recursion);
dvander@27	4320	assert(size>=0);
dvander@27	4321	if (maxsize<size)
dvander@27	4322	maxsize=size;
dvander@27	4323	} /* for */
dvander@27	4324
dvander@27	4325	maxsize++; /* +1 because a zero cell is always pushed on top
dvander@27	4326	* of the stack to catch stack overwrites */
dvander@27	4327	return maxsize+(maxparams+1);/* +1 because # of parameters is always pushed on entry */
dvander@27	4328	}
dvander@27	4329	#endif
dvander@27	4330
dvander@27	4331	/* testsymbols - test for unused local or global variables
dvander@27	4332	*
dvander@27	4333	* "Public" functions are excluded from the check, since these
dvander@27	4334	* may be exported to other object modules.
dvander@27	4335	* Labels are excluded from the check if the argument 'testlabs'
dvander@27	4336	* is 0. Thus, labels are not tested until the end of the function.
dvander@27	4337	* Constants may also be excluded (convenient for global constants).
dvander@27	4338	*
dvander@27	4339	* When the nesting level drops below "level", the check stops.
dvander@27	4340	*
dvander@27	4341	* The function returns whether there is an "entry" point for the file.
dvander@27	4342	* This flag will only be 1 when browsing the global symbol table.
dvander@27	4343	*/
dvander@27	4344	static int testsymbols(symbol *root,int level,int testlabs,int testconst)
dvander@27	4345	{
dvander@27	4346	char symname[2*sNAMEMAX+16];
dvander@27	4347	int entry=FALSE;
dvander@27	4348
dvander@27	4349	symbol *sym=root->next;
dvander@27	4350	while (sym!=NULL && sym->compound>=level) {
dvander@27	4351	switch (sym->ident) {
dvander@27	4352	case iLABEL:
dvander@27	4353	if (testlabs) {
dvander@27	4354	if ((sym->usage & uDEFINE)==0) {
dvander@27	4355	error(19,sym->name); /* not a label: ... */
dvander@27	4356	} else if ((sym->usage & uREAD)==0) {
dvander@27	4357	errorset(sSETPOS,sym->lnumber);
dvander@27	4358	error(203,sym->name); /* symbol isn't used: ... */
dvander@27	4359	} /* if */
dvander@27	4360	} /* if */
dvander@27	4361	break;
dvander@27	4362	case iFUNCTN:
dvander@27	4363	if ((sym->usage & (uDEFINE \| uREAD \| uNATIVE \| uSTOCK \| uPUBLIC))==uDEFINE) {
dvander@27	4364	funcdisplayname(symname,sym->name);
dvander@27	4365	if (strlen(symname)>0)
dvander@27	4366	error(203,symname); /* symbol isn't used ... (and not public/native/stock) */
dvander@27	4367	} /* if */
dvander@27	4368	if ((sym->usage & uPUBLIC)!=0 \|\| strcmp(sym->name,uMAINFUNC)==0)
dvander@27	4369	entry=TRUE; /* there is an entry point */
dvander@27	4370	/* also mark the function to the debug information */
dvander@27	4371	if (((sym->usage & uREAD)!=0 \|\| (sym->usage & uPUBLIC)!=0) && (sym->usage & uNATIVE)==0)
dvander@27	4372	insert_dbgsymbol(sym);
dvander@27	4373	break;
dvander@27	4374	case iCONSTEXPR:
dvander@27	4375	if (testconst && (sym->usage & uREAD)==0) {
dvander@27	4376	errorset(sSETPOS,sym->lnumber);
dvander@27	4377	error(203,sym->name); /* symbol isn't used: ... */
dvander@27	4378	} /* if */
dvander@27	4379	break;
dvander@27	4380	default:
dvander@27	4381	/* a variable */
dvander@27	4382	if (sym->parent!=NULL)
dvander@27	4383	break; /* hierarchical data type */
dvander@27	4384	if ((sym->usage & (uWRITTEN \| uREAD \| uSTOCK))==0) {
dvander@27	4385	if (testconst)
dvander@27	4386	errorset(sSETPOS,sym->lnumber);
dvander@27	4387	error(203,sym->name,sym->lnumber); /* symbol isn't used (and not stock) */
dvander@27	4388	} else if ((sym->usage & (uREAD \| uSTOCK \| uPUBLIC))==0) {
dvander@27	4389	errorset(sSETPOS,sym->lnumber);
dvander@27	4390	error(204,sym->name); /* value assigned to symbol is never used */
dvander@27	4391	#if 0 // ??? not sure whether it is a good idea to force people use "const"
dvander@27	4392	} else if ((sym->usage & (uWRITTEN \| uPUBLIC \| uCONST))==0 && sym->ident==iREFARRAY) {
dvander@27	4393	errorset(sSETPOS,sym->lnumber);
dvander@27	4394	error(214,sym->name); /* make array argument "const" */
dvander@27	4395	#endif
dvander@27	4396	} /* if */
dvander@27	4397	/* also mark the variable (local or global) to the debug information */
dvander@27	4398	if ((sym->usage & (uWRITTEN \| uREAD))!=0 && (sym->usage & uNATIVE)==0)
dvander@27	4399	insert_dbgsymbol(sym);
dvander@27	4400	} /* if */
dvander@27	4401	sym=sym->next;
dvander@27	4402	} /* while */
dvander@27	4403
dvander@27	4404	return entry;
dvander@27	4405	}
dvander@27	4406
dvander@27	4407	static cell calc_array_datasize(symbol sym, cell offset)
dvander@27	4408	{
dvander@27	4409	cell length;
dvander@27	4410
dvander@27	4411	assert(sym!=NULL);
dvander@27	4412	assert(sym->ident==iARRAY \|\| sym->ident==iREFARRAY);
dvander@27	4413	length=sym->dim.array.length;
dvander@27	4414	if (sym->dim.array.level > 0) {
dvander@27	4415	cell sublength=calc_array_datasize(finddepend(sym),offset);
dvander@27	4416	if (offset!=NULL)
dvander@27	4417	offset=length(*offset+sizeof(cell));
dvander@27	4418	if (sublength>0)
dvander@27	4419	length=lengthsublength;
dvander@27	4420	else
dvander@27	4421	length=0;
dvander@27	4422	} else {
dvander@27	4423	if (offset!=NULL)
dvander@27	4424	*offset=0;
dvander@27	4425	} /* if */
dvander@27	4426	return length;
dvander@27	4427	}
dvander@27	4428
dvander@27	4429	static void destructsymbols(symbol *root,int level)
dvander@27	4430	{
dvander@27	4431	cell offset=0;
dvander@27	4432	int savepri=FALSE;
dvander@27	4433	symbol *sym=root->next;
dvander@27	4434	while (sym!=NULL && sym->compound>=level) {
dvander@27	4435	if (sym->ident==iVARIABLE \|\| sym->ident==iARRAY) {
dvander@27	4436	char symbolname[16];
dvander@27	4437	symbol *opsym;
dvander@27	4438	cell elements;
dvander@27	4439	/* check that the '~' operator is defined for this tag */
dvander@27	4440	operator_symname(symbolname,"~",sym->tag,0,1,0);
dvander@27	4441	if ((opsym=findglb(symbolname,sGLOBAL))!=NULL) {
dvander@27	4442	/* save PRI, in case of a return statment */
dvander@27	4443	if (!savepri) {
dvander@27	4444	pushreg(sPRI); /* right-hand operand is in PRI */
dvander@27	4445	savepri=TRUE;
dvander@27	4446	} /* if */
dvander@27	4447	/* if the variable is an array, get the number of elements */
dvander@27	4448	if (sym->ident==iARRAY) {
dvander@27	4449	elements=calc_array_datasize(sym,&offset);
dvander@27	4450	/* "elements" can be zero when the variable is declared like
dvander@27	4451	* new mytag: myvar[2][] = { {1, 2}, {3, 4} }
dvander@27	4452	* one should declare all dimensions!
dvander@27	4453	*/
dvander@27	4454	if (elements==0)
dvander@27	4455	error(46,sym->name); /* array size is unknown */
dvander@27	4456	} else {
dvander@27	4457	elements=1;
dvander@27	4458	offset=0;
dvander@27	4459	} /* if */
dvander@27	4460	pushval(elements);
dvander@27	4461	/* call the '~' operator */
dvander@27	4462	address(sym,sPRI);
dvander@27	4463	addconst(offset); /* add offset to array data to the address */
dvander@27	4464	pushreg(sPRI);
dvander@101	4465	pushval(2 /* sizeof(cell)/ );/* 2 parameters */
dvander@27	4466	assert(opsym->ident==iFUNCTN);
dvander@27	4467	ffcall(opsym,NULL,1);
dvander@27	4468	if (sc_status!=statSKIP)
dvander@27	4469	markusage(opsym,uREAD); /* do not mark as "used" when this call itself is skipped */
dvander@27	4470	if ((opsym->usage & uNATIVE)!=0 && opsym->x.lib!=NULL)
dvander@27	4471	opsym->x.lib->value += 1; /* increment "usage count" of the library */
dvander@27	4472	} /* if */
dvander@27	4473	} /* if */
dvander@27	4474	sym=sym->next;
dvander@27	4475	} /* while */
dvander@27	4476	/* restore PRI, if it was saved */
dvander@27	4477	if (savepri)
dvander@27	4478	popreg(sPRI);
dvander@27	4479	}
dvander@27	4480
dvander@27	4481	static constvalue insert_constval(constvalue prev,constvalue next,const char name,cell val,
dvander@27	4482	int index)
dvander@27	4483	{
dvander@27	4484	constvalue *cur;
dvander@27	4485
dvander@27	4486	if ((cur=(constvalue*)malloc(sizeof(constvalue)))==NULL)
dvander@27	4487	error(103); /* insufficient memory (fatal error) */
dvander@27	4488	memset(cur,0,sizeof(constvalue));
dvander@27	4489	if (name!=NULL) {
dvander@27	4490	assert(strlen(name)<sNAMEMAX);
dvander@27	4491	strcpy(cur->name,name);
dvander@27	4492	} /* if */
dvander@27	4493	cur->value=val;
dvander@27	4494	cur->index=index;
dvander@27	4495	cur->next=next;
dvander@27	4496	prev->next=cur;
dvander@27	4497	return cur;
dvander@27	4498	}
dvander@27	4499
dvander@27	4500	SC_FUNC constvalue append_constval(constvalue table,const char *name,cell val,int index)
dvander@27	4501	{
dvander@27	4502	constvalue cur,prev;
dvander@27	4503
dvander@27	4504	/* find the end of the constant table */
dvander@27	4505	for (prev=table, cur=table->next; cur!=NULL; prev=cur, cur=cur->next)
dvander@27	4506	/* nothing */;
dvander@27	4507	return insert_constval(prev,NULL,name,val,index);
dvander@27	4508	}
dvander@27	4509
dvander@27	4510	SC_FUNC constvalue find_constval(constvalue table,char *name,int index)
dvander@27	4511	{
dvander@27	4512	constvalue *ptr = table->next;
dvander@27	4513
dvander@27	4514	while (ptr!=NULL) {
dvander@27	4515	if (strcmp(name,ptr->name)==0 && ptr->index==index)
dvander@27	4516	return ptr;
dvander@27	4517	ptr=ptr->next;
dvander@27	4518	} /* while */
dvander@27	4519	return NULL;
dvander@27	4520	}
dvander@27	4521
dvander@27	4522	static constvalue find_constval_byval(constvalue table,cell val)
dvander@27	4523	{
dvander@27	4524	constvalue *ptr = table->next;
dvander@27	4525
dvander@27	4526	while (ptr!=NULL) {
dvander@27	4527	if (ptr->value==val)
dvander@27	4528	return ptr;
dvander@27	4529	ptr=ptr->next;
dvander@27	4530	} /* while */
dvander@27	4531	return NULL;
dvander@27	4532	}
dvander@27	4533
dvander@27	4534	#if 0 /* never used */
dvander@27	4535	static int delete_constval(constvalue table,char name)
dvander@27	4536	{
dvander@27	4537	constvalue *prev = table;
dvander@27	4538	constvalue *cur = prev->next;
dvander@27	4539
dvander@27	4540	while (cur!=NULL) {
dvander@27	4541	if (strcmp(name,cur->name)==0) {
dvander@27	4542	prev->next=cur->next;
dvander@27	4543	free(cur);
dvander@27	4544	return TRUE;
dvander@27	4545	} /* if */
dvander@27	4546	prev=cur;
dvander@27	4547	cur=cur->next;
dvander@27	4548	} /* while */
dvander@27	4549	return FALSE;
dvander@27	4550	}
dvander@27	4551	#endif
dvander@27	4552
dvander@27	4553	SC_FUNC void delete_consttable(constvalue *table)
dvander@27	4554	{
dvander@27	4555	constvalue cur=table->next, next;
dvander@27	4556
dvander@27	4557	while (cur!=NULL) {
dvander@27	4558	next=cur->next;
dvander@27	4559	free(cur);
dvander@27	4560	cur=next;
dvander@27	4561	} /* while */
dvander@27	4562	memset(table,0,sizeof(constvalue));
dvander@27	4563	}
dvander@27	4564
dvander@27	4565	/* add_constant
dvander@27	4566	*
dvander@27	4567	* Adds a symbol to the symbol table. Returns NULL on failure.
dvander@27	4568	*/
dvander@27	4569	SC_FUNC symbol add_constant(char name,cell val,int vclass,int tag)
dvander@27	4570	{
dvander@27	4571	symbol *sym;
dvander@27	4572
dvander@27	4573	/* Test whether a global or local symbol with the same name exists. Since
dvander@27	4574	* constants are stored in the symbols table, this also finds previously
dvander@27	4575	* defind constants. */
dvander@27	4576	sym=findglb(name,sSTATEVAR);
dvander@27	4577	if (!sym)
dvander@27	4578	sym=findloc(name);
dvander@27	4579	if (sym) {
dvander@27	4580	int redef=0;
dvander@27	4581	if (sym->ident!=iCONSTEXPR)
dvander@27	4582	redef=1; /* redefinition a function/variable to a constant is not allowed */
dvander@27	4583	if ((sym->usage & uENUMFIELD)!=0) {
dvander@27	4584	/* enum field, special case if it has a different tag and the new symbol is also an enum field */
dvander@27	4585	constvalue *tagid;
dvander@27	4586	symbol *tagsym;
dvander@27	4587	if (sym->tag==tag)
dvander@27	4588	redef=1; /* enumeration field is redefined (same tag) */
dvander@27	4589	tagid=find_tag_byval(tag);
dvander@27	4590	if (tagid==NULL) {
dvander@27	4591	redef=1; /* new constant does not have a tag */
dvander@27	4592	} else {
dvander@27	4593	tagsym=findconst(tagid->name,NULL);
dvander@27	4594	if (tagsym==NULL \|\| (tagsym->usage & uENUMROOT)==0)
dvander@27	4595	redef=1; /* new constant is not an enumeration field */
dvander@27	4596	} /* if */
dvander@27	4597	/* in this particular case (enumeration field that is part of a different
dvander@27	4598	* enum, and non-conflicting with plain constants) we want to be able to
dvander@27	4599	* redefine it
dvander@27	4600	*/
dvander@27	4601	if (!redef)
dvander@27	4602	goto redef_enumfield;
dvander@27	4603	} else if (sym->tag!=tag) {
dvander@27	4604	redef=1; /* redefinition of a constant (non-enum) to a different tag is not allowed */
dvander@27	4605	} /* if */
dvander@27	4606	if (redef) {
dvander@27	4607	error(21,name); /* symbol already defined */
dvander@27	4608	return NULL;
dvander@27	4609	} else if (sym->addr!=val) {
dvander@27	4610	error(201,name); /* redefinition of constant (different value) */
dvander@27	4611	sym->addr=val; /* set new value */
dvander@27	4612	} /* if */
dvander@27	4613	/* silently ignore redefinitions of constants with the same value & tag */
dvander@27	4614	return sym;
dvander@27	4615	} /* if */
dvander@27	4616
dvander@27	4617	/* constant doesn't exist yet (or is allowed to be redefined) */
dvander@27	4618	redef_enumfield:
dvander@27	4619	sym=addsym(name,val,iCONSTEXPR,vclass,tag,uDEFINE);
dvander@27	4620	assert(sym!=NULL); /* fatal error 103 must be given on error */
dvander@27	4621	if (sc_status == statIDLE)
dvander@27	4622	sym->usage \|= uPREDEF;
dvander@27	4623	return sym;
dvander@27	4624	}
dvander@27	4625
dvander@27	4626	/* statement - The Statement Parser
dvander@27	4627	*
dvander@27	4628	* This routine is called whenever the parser needs to know what statement
dvander@27	4629	* it encounters (i.e. whenever program syntax requires a statement).
dvander@27	4630	*/
dvander@27	4631	static void statement(int *lastindent,int allow_decl)
dvander@27	4632	{
faluco@62	4633	int tok,save;
dvander@27	4634	cell val;
dvander@27	4635	char *st;
dvander@27	4636
dvander@27	4637	if (!freading) {
dvander@27	4638	error(36); /* empty statement */
dvander@27	4639	return;
dvander@27	4640	} /* if */
dvander@27	4641	errorset(sRESET,0);
dvander@27	4642
dvander@27	4643	tok=lex(&val,&st);
dvander@27	4644	if (tok!='{') {
dvander@27	4645	insert_dbgline(fline);
dvander@27	4646	setline(TRUE);
dvander@27	4647	} /* if */
dvander@27	4648	/* lex() has set stmtindent */
dvander@27	4649	if (lastindent!=NULL && tok!=tLABEL) {
dvander@27	4650	if (lastindent>=0 && lastindent!=stmtindent && !indent_nowarn && sc_tabsize>0)
dvander@27	4651	error(217); /* loose indentation */
dvander@27	4652	*lastindent=stmtindent;
dvander@27	4653	indent_nowarn=FALSE; /* if warning was blocked, re-enable it */
dvander@27	4654	} /* if */
dvander@27	4655	switch (tok) {
dvander@27	4656	case 0:
dvander@27	4657	/* nothing */
dvander@27	4658	break;
dvander@27	4659	case tNEW:
dvander@27	4660	if (allow_decl) {
dvander@27	4661	autozero=1;
dvander@27	4662	declloc(FALSE);
dvander@27	4663	lastst=tNEW;
dvander@27	4664	} else {
dvander@27	4665	error(3); /* declaration only valid in a block */
dvander@27	4666	} /* if */
dvander@27	4667	break;
dvander@27	4668	case tDECL:
dvander@27	4669	if (allow_decl) {
dvander@27	4670	autozero=0;
dvander@27	4671	declloc(FALSE);
dvander@27	4672	lastst=tDECL;
dvander@27	4673	} else {
dvander@27	4674	error(3); /* declaration only valid in a block */
dvander@27	4675	} /* if */
dvander@27	4676	break;
dvander@27	4677	case tSTATIC:
dvander@27	4678	if (allow_decl) {
dvander@27	4679	declloc(TRUE);
dvander@27	4680	lastst=tNEW;
dvander@27	4681	} else {
dvander@27	4682	error(3); /* declaration only valid in a block */
dvander@27	4683	} /* if */
dvander@27	4684	break;
dvander@27	4685	case '{':
faluco@62	4686	case tBEGIN:
faluco@62	4687	save=fline;
dvander@27	4688	if (!matchtoken('}')) /* {} is the empty statement */
faluco@62	4689	compound(save==fline,tok);
dvander@27	4690	/* lastst (for "last statement") does not change */
dvander@27	4691	break;
dvander@27	4692	case ';':
dvander@27	4693	error(36); /* empty statement */
dvander@27	4694	break;
dvander@27	4695	case tIF:
faluco@62	4696	lastst=doif();
dvander@27	4697	break;
dvander@27	4698	case tWHILE:
faluco@62	4699	lastst=dowhile();
dvander@27	4700	break;
dvander@27	4701	case tDO:
faluco@62	4702	lastst=dodo();
dvander@27	4703	break;
dvander@27	4704	case tFOR:
faluco@62	4705	lastst=dofor();
dvander@27	4706	break;
dvander@27	4707	case tSWITCH:
dvander@27	4708	doswitch();
dvander@27	4709	lastst=tSWITCH;
dvander@27	4710	break;
dvander@27	4711	case tCASE:
dvander@27	4712	case tDEFAULT:
dvander@27	4713	error(14); /* not in switch */
dvander@27	4714	break;
dvander@27	4715	case tGOTO:
dvander@27	4716	dogoto();
dvander@27	4717	lastst=tGOTO;
dvander@27	4718	break;
dvander@27	4719	case tLABEL:
dvander@27	4720	dolabel();
dvander@27	4721	lastst=tLABEL;
dvander@27	4722	break;
dvander@27	4723	case tRETURN:
dvander@27	4724	doreturn();
dvander@27	4725	lastst=tRETURN;
dvander@27	4726	break;
dvander@27	4727	case tBREAK:
dvander@27	4728	dobreak();
dvander@27	4729	lastst=tBREAK;
dvander@27	4730	break;
dvander@27	4731	case tCONTINUE:
dvander@27	4732	docont();
dvander@27	4733	lastst=tCONTINUE;
dvander@27	4734	break;
dvander@27	4735	case tEXIT:
dvander@27	4736	doexit();
dvander@27	4737	lastst=tEXIT;
dvander@27	4738	break;
dvander@27	4739	case tASSERT:
dvander@27	4740	doassert();
dvander@27	4741	lastst=tASSERT;
dvander@27	4742	break;
dvander@27	4743	case tSLEEP:
dvander@27	4744	dosleep();
dvander@27	4745	lastst=tSLEEP;
dvander@27	4746	break;
dvander@27	4747	case tSTATE:
dvander@27	4748	dostate();
dvander@27	4749	lastst=tSTATE;
dvander@27	4750	break;
dvander@27	4751	case tCONST:
dvander@27	4752	decl_const(sLOCAL);
dvander@27	4753	break;
dvander@27	4754	case tENUM:
dvander@27	4755	decl_enum(sLOCAL);
dvander@27	4756	break;
dvander@27	4757	default: /* non-empty expression */
dvander@27	4758	sc_allowproccall=optproccall;
dvander@27	4759	lexpush(); /* analyze token later */
dvander@27	4760	doexpr(TRUE,TRUE,TRUE,TRUE,NULL,NULL,FALSE);
dvander@27	4761	needtoken(tTERM);
dvander@27	4762	lastst=tEXPR;
dvander@27	4763	sc_allowproccall=FALSE;
dvander@27	4764	} /* switch */
dvander@27	4765	}
dvander@27	4766
faluco@62	4767	static void compound(int stmt_sameline,int starttok)
dvander@27	4768	{
dvander@27	4769	int indent=-1;
dvander@27	4770	cell save_decl=declared;
dvander@27	4771	int count_stmt=0;
dvander@27	4772	int block_start=fline; /* save line where the compound block started */
faluco@62	4773	int endtok;
dvander@27	4774
dvander@117	4775	pushstacklist();
dvander@27	4776	/* if there is more text on this line, we should adjust the statement indent */
dvander@27	4777	if (stmt_sameline) {
dvander@27	4778	int i;
dvander@27	4779	const unsigned char *p=lptr;
dvander@27	4780	/* go back to the opening brace */
faluco@62	4781	while (*p!=starttok) {
dvander@27	4782	assert(p>pline);
dvander@27	4783	p--;
dvander@27	4784	} /* while */
faluco@62	4785	assert(p==starttok); / it should be found */
dvander@27	4786	/* go forward, skipping white-space */
dvander@27	4787	p++;
dvander@27	4788	while (p<=' ' && p!='\0')
dvander@27	4789	p++;
dvander@27	4790	assert(p!='\0'); / a token should be found */
dvander@27	4791	stmtindent=0;
dvander@27	4792	for (i=0; i<(int)(p-pline); i++)
dvander@27	4793	if (pline[i]=='\t' && sc_tabsize>0)
dvander@27	4794	stmtindent += (int)(sc_tabsize - (stmtindent+sc_tabsize) % sc_tabsize);
dvander@27	4795	else
dvander@27	4796	stmtindent++;
dvander@27	4797	} /* if */
dvander@27	4798
faluco@62	4799	endtok=(starttok=='{') ? '}' : tEND;
dvander@27	4800	nestlevel+=1; /* increase compound statement level */
faluco@62	4801	while (matchtoken(endtok)==0){/* repeat until compound statement is closed */
dvander@27	4802	if (!freading){
dvander@27	4803	error(30,block_start); /* compound block not closed at end of file */
dvander@27	4804	break;
dvander@27	4805	} else {
faluco@62	4806	if (count_stmt>0 && (lastst==tRETURN \|\| lastst==tBREAK \|\| lastst==tCONTINUE \|\| lastst==tENDLESS))
dvander@27	4807	error(225); /* unreachable code */
dvander@27	4808	statement(&indent,TRUE); /* do a statement */
dvander@27	4809	count_stmt++;
dvander@27	4810	} /* if */
dvander@27	4811	} /* while */
dvander@27	4812	if (lastst!=tRETURN)
dvander@27	4813	destructsymbols(&loctab,nestlevel);
dvander@117	4814	if (lastst!=tRETURN && lastst!=tGOTO) {
dvander@117	4815	popstacklist();
dvander@117	4816	}
dvander@27	4817	testsymbols(&loctab,nestlevel,FALSE,TRUE); /* look for unused block locals */
dvander@27	4818	declared=save_decl;
dvander@27	4819	delete_symbols(&loctab,nestlevel,FALSE,TRUE); /* erase local symbols, but
dvander@27	4820	* retain block local labels
dvander@27	4821	* (within the function) */
dvander@27	4822	nestlevel-=1; /* decrease compound statement level */
dvander@27	4823	}
dvander@27	4824
dvander@27	4825	/* doexpr
dvander@27	4826	*
dvander@27	4827	* Global references: stgidx (referred to only)
dvander@27	4828	*/
dvander@27	4829	static int doexpr(int comma,int chkeffect,int allowarray,int mark_endexpr,
dvander@27	4830	int tag,symbol *symptr,int chkfuncresult)
dvander@27	4831	{
dvander@27	4832	int index,ident;
dvander@27	4833	int localstaging=FALSE;
dvander@27	4834	cell val;
dvander@27	4835
dvander@27	4836	if (!staging) {
dvander@27	4837	stgset(TRUE); /* start stage-buffering */
dvander@27	4838	localstaging=TRUE;
dvander@27	4839	assert(stgidx==0);
dvander@27	4840	} /* if */
dvander@27	4841	index=stgidx;
dvander@27	4842	errorset(sEXPRMARK,0);
dvander@27	4843	do {
dvander@27	4844	/* on second round through, mark the end of the previous expression */
dvander@27	4845	if (index!=stgidx)
dvander@27	4846	markexpr(sEXPR,NULL,0);
dvander@27	4847	sideeffect=FALSE;
dvander@27	4848	ident=expression(&val,tag,symptr,chkfuncresult);
dvander@27	4849	if (!allowarray && (ident==iARRAY \|\| ident==iREFARRAY))
dvander@27	4850	error(33,"-unknown-"); /* array must be indexed */
dvander@27	4851	if (chkeffect && !sideeffect)
dvander@27	4852	error(215); /* expression has no effect */
dvander@27	4853	sc_allowproccall=FALSE; /* cannot use "procedure call" syntax anymore */
dvander@27	4854	} while (comma && matchtoken(',')); /* more? */
dvander@27	4855	if (mark_endexpr)
dvander@27	4856	markexpr(sEXPR,NULL,0); /* optionally, mark the end of the expression */
dvander@27	4857	errorset(sEXPRRELEASE,0);
dvander@27	4858	if (localstaging) {
dvander@27	4859	stgout(index);
dvander@27	4860	stgset(FALSE); /* stop staging */
dvander@27	4861	} /* if */
dvander@27	4862	return ident;
dvander@27	4863	}
dvander@27	4864
dvander@27	4865	/* constexpr
dvander@27	4866	*/
dvander@27	4867	SC_FUNC int constexpr(cell val,int tag,symbol **symptr)
dvander@27	4868	{
dvander@27	4869	int ident,index;
dvander@27	4870	cell cidx;
dvander@27	4871
dvander@27	4872	stgset(TRUE); /* start stage-buffering */
dvander@27	4873	stgget(&index,&cidx); /* mark position in code generator */
dvander@27	4874	errorset(sEXPRMARK,0);
dvander@27	4875	ident=expression(val,tag,symptr,FALSE);
dvander@27	4876	stgdel(index,cidx); /* scratch generated code */
dvander@27	4877	stgset(FALSE); /* stop stage-buffering */
dvander@27	4878	if (ident!=iCONSTEXPR) {
dvander@27	4879	error(8); /* must be constant expression */
dvander@27	4880	if (val!=NULL)
dvander@27	4881	*val=0;
dvander@27	4882	if (tag!=NULL)
dvander@27	4883	*tag=0;
dvander@27	4884	if (symptr!=NULL)
dvander@27	4885	*symptr=NULL;
dvander@27	4886	} /* if */
dvander@27	4887	errorset(sEXPRRELEASE,0);
dvander@27	4888	return (ident==iCONSTEXPR);
dvander@27	4889	}
dvander@27	4890
dvander@27	4891	/* test
dvander@27	4892	*
dvander@27	4893	* In the case a "simple assignment" operator ("=") is used within a test,
dvander@27	4894	* the warning "possibly unintended assignment" is displayed. This routine
dvander@27	4895	* sets the global variable "sc_intest" to true, it is restored upon termination.
dvander@27	4896	* In the case the assignment was intended, use parantheses around the
dvander@27	4897	* expression to avoid the warning; primary() sets "sc_intest" to 0.
dvander@27	4898	*
dvander@27	4899	* Global references: sc_intest (altered, but restored upon termination)
dvander@27	4900	*/
faluco@62	4901	static int test(int label,int parens,int invert)
dvander@27	4902	{
dvander@27	4903	int index,tok;
dvander@27	4904	cell cidx;
dvander@27	4905	int ident,tag;
faluco@62	4906	int endtok;
dvander@27	4907	cell constval;
dvander@27	4908	symbol *sym;
dvander@27	4909	int localstaging=FALSE;
dvander@27	4910
dvander@27	4911	if (!staging) {
dvander@27	4912	stgset(TRUE); /* start staging */
dvander@27	4913	localstaging=TRUE;
dvander@27	4914	#if !defined NDEBUG
dvander@27	4915	stgget(&index,&cidx); /* should start at zero if started locally */
dvander@27	4916	assert(index==0);
dvander@27	4917	#endif
dvander@27	4918	} /* if */
dvander@27	4919
dvander@27	4920	PUSHSTK_I(sc_intest);
dvander@27	4921	sc_intest=TRUE;
faluco@62	4922	endtok=0;
faluco@62	4923	if (parens!=TEST_PLAIN) {
faluco@62	4924	if (matchtoken('('))
faluco@62	4925	endtok=')';
faluco@62	4926	else if (parens==TEST_THEN)
faluco@62	4927	endtok=tTHEN;
faluco@62	4928	else if (parens==TEST_DO)
faluco@62	4929	endtok=tDO;
faluco@62	4930	} /* if */
dvander@27	4931	do {
dvander@27	4932	stgget(&index,&cidx); /* mark position (of last expression) in
dvander@27	4933	* code generator */
dvander@27	4934	ident=expression(&constval,&tag,&sym,TRUE);
dvander@27	4935	tok=matchtoken(',');
dvander@27	4936	if (tok)
dvander@27	4937	markexpr(sEXPR,NULL,0);
dvander@27	4938	} while (tok); /* do */
faluco@62	4939	if (endtok!=0)
faluco@62	4940	needtoken(endtok);
dvander@27	4941	if (ident==iARRAY \|\| ident==iREFARRAY) {
dvander@27	4942	char *ptr=(sym->name!=NULL) ? sym->name : "-unknown-";
dvander@27	4943	error(33,ptr); /* array must be indexed */
dvander@27	4944	} /* if */
dvander@27	4945	if (ident==iCONSTEXPR) { /* constant expression */
faluco@62	4946	int testtype=0;
dvander@27	4947	sc_intest=(short)POPSTK_I();/* restore stack */
dvander@27	4948	stgdel(index,cidx);
dvander@27	4949	if (constval) { /* code always executed */
dvander@27	4950	error(206); /* redundant test: always non-zero */
faluco@62	4951	testtype=tENDLESS;
dvander@27	4952	} else {
dvander@27	4953	error(205); /* redundant code: never executed */
dvander@27	4954	jumplabel(label);
dvander@27	4955	} /* if */
dvander@27	4956	if (localstaging) {
dvander@27	4957	stgout(0); /* write "jumplabel" code */
dvander@27	4958	stgset(FALSE); /* stop staging */
dvander@27	4959	} /* if */
faluco@62	4960	return testtype;
dvander@27	4961	} /* if */
dvander@27	4962	if (tag!=0 && tag!=pc_addtag("bool"))
dvander@27	4963	if (check_userop(lneg,tag,0,1,NULL,&tag))
dvander@27	4964	invert= !invert; /* user-defined ! operator inverted result */
dvander@27	4965	if (invert)
dvander@27	4966	jmp_ne0(label); /* jump to label if true (different from 0) */
dvander@27	4967	else
dvander@27	4968	jmp_eq0(label); /* jump to label if false (equal to 0) */
dvander@27	4969	markexpr(sEXPR,NULL,0); /* end expression (give optimizer a chance) */
dvander@27	4970	sc_intest=(short)POPSTK_I(); /* double typecast to avoid warning with Microsoft C */
dvander@27	4971	if (localstaging) {
dvander@27	4972	stgout(0); /* output queue from the very beginning (see
dvander@27	4973	* assert() when localstaging is set to TRUE) */
dvander@27	4974	stgset(FALSE); /* stop staging */
dvander@27	4975	} /* if */
faluco@62	4976	return 0;
dvander@27	4977	}
dvander@27	4978
faluco@62	4979	static int doif(void)
dvander@27	4980	{
dvander@27	4981	int flab1,flab2;
dvander@27	4982	int ifindent;
faluco@62	4983	int lastst_true;
dvander@27	4984
dvander@27	4985	ifindent=stmtindent; /* save the indent of the "if" instruction */
dvander@27	4986	flab1=getlabel(); /* get label number for false branch */
faluco@62	4987	test(flab1,TEST_THEN,FALSE); /* get expression, branch to flab1 if false */
dvander@27	4988	statement(NULL,FALSE); /* if true, do a statement */
faluco@62	4989	if (!matchtoken(tELSE)) { /* if...else ? */
dvander@27	4990	setlabel(flab1); /* no, simple if..., print false label */
dvander@27	4991	} else {
faluco@62	4992	lastst_true=lastst; /* save last statement of the "true" branch */
dvander@27	4993	/* to avoid the "dangling else" error, we want a warning if the "else"
dvander@27	4994	* has a lower indent than the matching "if" */
dvander@27	4995	if (stmtindent<ifindent && sc_tabsize>0)
dvander@27	4996	error(217); /* loose indentation */
dvander@27	4997	flab2=getlabel();
dvander@27	4998	if ((lastst!=tRETURN) && (lastst!=tGOTO))
faluco@62	4999	jumplabel(flab2); /* "true" branch jumps around "else" clause, unless the "true" branch statement already jumped */
dvander@27	5000	setlabel(flab1); /* print false label */
dvander@27	5001	statement(NULL,FALSE); /* do "else" clause */
dvander@27	5002	setlabel(flab2); /* print true label */
faluco@62	5003	/* if both the "true" branch and the "false" branch ended with the same
faluco@62	5004	* kind of statement, set the last statement id to that kind, rather than
faluco@62	5005	* to the generic tIF; this allows for better "unreachable code" checking
faluco@62	5006	*/
faluco@62	5007	if (lastst==lastst_true)
faluco@62	5008	return lastst;
faluco@62	5009	} /* if */
faluco@62	5010	return tIF;
dvander@27	5011	}
dvander@27	5012
faluco@62	5013	static int dowhile(void)
dvander@27	5014	{
dvander@27	5015	int wq[wqSIZE]; /* allocate local queue */
faluco@62	5016	int save_endlessloop,retcode;
faluco@62	5017
faluco@62	5018	save_endlessloop=endlessloop;
dvander@27	5019	addwhile(wq); /* add entry to queue for "break" */
dvander@27	5020	setlabel(wq[wqLOOP]); /* loop label */
dvander@27	5021	/* The debugger uses the "break" opcode to be able to "break" out of
dvander@27	5022	* a loop. To make sure that each loop has a break opcode, even for the
dvander@27	5023	* tiniest loop, set it below the top of the loop
dvander@27	5024	*/
dvander@27	5025	setline(TRUE);
faluco@62	5026	endlessloop=test(wq[wqEXIT],TEST_DO,FALSE);/* branch to wq[wqEXIT] if false */
dvander@27	5027	statement(NULL,FALSE); /* if so, do a statement */
dvander@27	5028	jumplabel(wq[wqLOOP]); /* and loop to "while" start */
dvander@27	5029	setlabel(wq[wqEXIT]); /* exit label */
dvander@27	5030	delwhile(); /* delete queue entry */
faluco@62	5031
faluco@62	5032	retcode=endlessloop ? tENDLESS : tWHILE;
faluco@62	5033	endlessloop=save_endlessloop;
faluco@62	5034	return retcode;
dvander@27	5035	}
dvander@27	5036
dvander@27	5037	/*
dvander@27	5038	* Note that "continue" will in this case not jump to the top of the loop, but
dvander@27	5039	* to the end: just before the TRUE-or-FALSE testing code.
dvander@27	5040	*/
faluco@62	5041	static int dodo(void)
dvander@27	5042	{
dvander@27	5043	int wq[wqSIZE],top;
faluco@62	5044	int save_endlessloop,retcode;
faluco@62	5045
faluco@62	5046	save_endlessloop=endlessloop;
dvander@27	5047	addwhile(wq); /* see "dowhile" for more info */
dvander@27	5048	top=getlabel(); /* make a label first */
dvander@27	5049	setlabel(top); /* loop label */
dvander@27	5050	statement(NULL,FALSE);
dvander@27	5051	needtoken(tWHILE);
dvander@27	5052	setlabel(wq[wqLOOP]); /* "continue" always jumps to WQLOOP. */
dvander@27	5053	setline(TRUE);
faluco@62	5054	endlessloop=test(wq[wqEXIT],TEST_OPT,FALSE);
dvander@27	5055	jumplabel(top);
dvander@27	5056	setlabel(wq[wqEXIT]);
dvander@27	5057	delwhile();
dvander@27	5058	needtoken(tTERM);
faluco@62	5059
faluco@62	5060	retcode=endlessloop ? tENDLESS : tDO;
faluco@62	5061	endlessloop=save_endlessloop;
faluco@62	5062	return retcode;
dvander@27	5063	}
dvander@27	5064
faluco@62	5065	static int dofor(void)
dvander@27	5066	{
dvander@27	5067	int wq[wqSIZE],skiplab;
dvander@27	5068	cell save_decl;
faluco@62	5069	int save_nestlevel,save_endlessloop;
faluco@62	5070	int index,endtok;
dvander@27	5071	int *ptr;
dvander@27	5072
dvander@27	5073	save_decl=declared;
dvander@27	5074	save_nestlevel=nestlevel;
faluco@62	5075	save_endlessloop=endlessloop;
dvander@117	5076	pushstacklist();
dvander@117	5077
dvander@27	5078	addwhile(wq);
dvander@27	5079	skiplab=getlabel();
faluco@62	5080	endtok= matchtoken('(') ? ')' : tDO;
dvander@27	5081	if (matchtoken(';')==0) {
dvander@27	5082	/* new variable declarations are allowed here */
dvander@27	5083	if (matchtoken(tNEW)) {
dvander@27	5084	/* The variable in expr1 of the for loop is at a
dvander@27	5085	* 'compound statement' level of it own.
dvander@27	5086	*/
dvander@27	5087	nestlevel++;
faluco@63	5088	autozero=1;
dvander@27	5089	declloc(FALSE); /* declare local variable */
dvander@27	5090	} else {
dvander@27	5091	doexpr(TRUE,TRUE,TRUE,TRUE,NULL,NULL,FALSE); /* expression 1 */
dvander@27	5092	needtoken(';');
dvander@27	5093	} /* if */
dvander@27	5094	} /* if */
dvander@27	5095	/* Adjust the "declared" field in the "while queue", in case that
dvander@27	5096	* local variables were declared in the first expression of the
dvander@27	5097	* "for" loop. These are deleted in separately, so a "break" or a "continue"
dvander@27	5098	* must ignore these fields.
dvander@27	5099	*/
dvander@27	5100	ptr=readwhile();
dvander@27	5101	assert(ptr!=NULL);
dvander@117	5102	/*ptr[wqBRK]=(int)declared;
dvander@117	5103	*ptr[wqCONT]=(int)declared;
dvander@117	5104	*/
dvander@117	5105	ptr[wqBRK] = stackusage->list_id;
dvander@117	5106	ptr[wqCONT] = stackusage->list_id;
dvander@27	5107	jumplabel(skiplab); /* skip expression 3 1st time */
dvander@27	5108	setlabel(wq[wqLOOP]); /* "continue" goes to this label: expr3 */
dvander@27	5109	setline(TRUE);
dvander@27	5110	/* Expressions 2 and 3 are reversed in the generated code: expression 3
dvander@27	5111	* precedes expression 2. When parsing, the code is buffered and marks for
dvander@27	5112	* the start of each expression are insterted in the buffer.
dvander@27	5113	*/
dvander@27	5114	assert(!staging);
dvander@27	5115	stgset(TRUE); /* start staging */
dvander@27	5116	assert(stgidx==0);
dvander@27	5117	index=stgidx;
dvander@27	5118	stgmark(sSTARTREORDER);
dvander@27	5119	stgmark((char)(sEXPRSTART+0)); /* mark start of 2nd expression in stage */
dvander@27	5120	setlabel(skiplab); /* jump to this point after 1st expression */
faluco@62	5121	if (matchtoken(';')) {
faluco@62	5122	endlessloop=1;
faluco@62	5123	} else {
faluco@62	5124	endlessloop=test(wq[wqEXIT],TEST_PLAIN,FALSE);/* expression 2 (jump to wq[wqEXIT] if false) */
dvander@27	5125	needtoken(';');
dvander@27	5126	} /* if */
dvander@27	5127	stgmark((char)(sEXPRSTART+1)); /* mark start of 3th expression in stage */
faluco@62	5128	if (!matchtoken(endtok)) {
dvander@27	5129	doexpr(TRUE,TRUE,TRUE,TRUE,NULL,NULL,FALSE); /* expression 3 */
faluco@62	5130	needtoken(endtok);
dvander@27	5131	} /* if */
dvander@27	5132	stgmark(sENDREORDER); /* mark end of reversed evaluation */
dvander@27	5133	stgout(index);
dvander@27	5134	stgset(FALSE); /* stop staging */
dvander@27	5135	statement(NULL,FALSE);
dvander@27	5136	jumplabel(wq[wqLOOP]);
dvander@27	5137	setlabel(wq[wqEXIT]);
dvander@27	5138	delwhile();
dvander@27	5139
dvander@27	5140	assert(nestlevel>=save_nestlevel);
dvander@27	5141	if (nestlevel>save_nestlevel) {
dvander@27	5142	/* Clean up the space and the symbol table for the local
dvander@27	5143	* variable in "expr1".
dvander@27	5144	*/
dvander@27	5145	destructsymbols(&loctab,nestlevel);
dvander@117	5146	popstacklist();
dvander@27	5147	testsymbols(&loctab,nestlevel,FALSE,TRUE); /* look for unused block locals */
dvander@27	5148	declared=save_decl;
dvander@27	5149	delete_symbols(&loctab,nestlevel,FALSE,TRUE);
dvander@27	5150	nestlevel=save_nestlevel; /* reset 'compound statement' nesting level */
dvander@27	5151	} /* if */
faluco@62	5152
faluco@62	5153	index=endlessloop ? tENDLESS : tFOR;
faluco@62	5154	endlessloop=save_endlessloop;
faluco@62	5155	return index;
dvander@27	5156	}
dvander@27	5157
dvander@27	5158	/* The switch statement is incompatible with its C sibling:
dvander@27	5159	* 1. the cases are not drop through
dvander@27	5160	* 2. only one instruction may appear below each case, use a compound
dvander@27	5161	* instruction to execute multiple instructions
dvander@27	5162	* 3. the "case" keyword accepts a comma separated list of values to
dvander@117	5163	* match
dvander@27	5164	*
dvander@27	5165	* SWITCH param
dvander@27	5166	* PRI = expression result
dvander@27	5167	* param = table offset (code segment)
dvander@27	5168	*
dvander@27	5169	*/
dvander@27	5170	static void doswitch(void)
dvander@27	5171	{
dvander@27	5172	int lbl_table,lbl_exit,lbl_case;
faluco@62	5173	int swdefault,casecount;
faluco@62	5174	int tok,endtok;
dvander@27	5175	cell val;
dvander@27	5176	char *str;
dvander@27	5177	constvalue caselist = { NULL, "", 0, 0}; /* case list starts empty */
dvander@27	5178	constvalue cse,csp;
dvander@27	5179	char labelname[sNAMEMAX+1];
dvander@27	5180
faluco@62	5181	endtok= matchtoken('(') ? ')' : tDO;
dvander@27	5182	doexpr(TRUE,FALSE,FALSE,FALSE,NULL,NULL,TRUE);/* evaluate switch expression */
faluco@62	5183	needtoken(endtok);
dvander@27	5184	/* generate the code for the switch statement, the label is the address
dvander@27	5185	* of the case table (to be generated later).
dvander@27	5186	*/
dvander@27	5187	lbl_table=getlabel();
dvander@27	5188	lbl_case=0; /* just to avoid a compiler warning */
dvander@27	5189	ffswitch(lbl_table);
dvander@27	5190
faluco@62	5191	if (matchtoken(tBEGIN)) {
faluco@62	5192	endtok=tEND;
faluco@62	5193	} else {
faluco@62	5194	endtok='}';
faluco@62	5195	needtoken('{');
faluco@62	5196	} /* if */
dvander@27	5197	lbl_exit=getlabel(); /* get label number for jumping out of switch */
dvander@27	5198	swdefault=FALSE;
dvander@27	5199	casecount=0;
dvander@27	5200	do {
dvander@27	5201	tok=lex(&val,&str); /* read in (new) token */
dvander@27	5202	switch (tok) {
dvander@27	5203	case tCASE:
dvander@27	5204	if (swdefault!=FALSE)
dvander@27	5205	error(15); /* "default" case must be last in switch statement */
dvander@27	5206	lbl_case=getlabel();
dvander@27	5207	PUSHSTK_I(sc_allowtags);
dvander@27	5208	sc_allowtags=FALSE; /* do not allow tagnames here */
dvander@27	5209	do {
dvander@27	5210	casecount++;
dvander@27	5211
dvander@27	5212	/* ??? enforce/document that, in a switch, a statement cannot start
dvander@27	5213	* with a label. Then, you can search for:
dvander@27	5214	* * the first semicolon (marks the end of a statement)
dvander@27	5215	* * an opening brace (marks the start of a compound statement)
dvander@27	5216	* and search for the right-most colon before that statement
dvander@27	5217	* Now, by replacing the ':' by a special COLON token, you can
dvander@27	5218	* parse all expressions until that special token.
dvander@27	5219	*/
dvander@27	5220
dvander@27	5221	constexpr(&val,NULL,NULL);
dvander@27	5222	/* Search the insertion point (the table is kept in sorted order, so
dvander@27	5223	* that advanced abstract machines can sift the case table with a
dvander@27	5224	* binary search). Check for duplicate case values at the same time.
dvander@27	5225	*/
dvander@27	5226	for (csp=&caselist, cse=caselist.next;
dvander@27	5227	cse!=NULL && cse->value<val;
dvander@27	5228	csp=cse, cse=cse->next)
dvander@27	5229	/* nothing */;
dvander@27	5230	if (cse!=NULL && cse->value==val)
dvander@27	5231	error(40,val); /* duplicate "case" label */
dvander@27	5232	/* Since the label is stored as a string in the "constvalue", the
dvander@27	5233	* size of an identifier must be at least 8, as there are 8
dvander@27	5234	* hexadecimal digits in a 32-bit number.
dvander@27	5235	*/
dvander@27	5236	#if sNAMEMAX < 8
dvander@27	5237	#error Length of identifier (sNAMEMAX) too small.
dvander@27	5238	#endif
dvander@27	5239	assert(csp!=NULL);
dvander@27	5240	assert(csp->next==cse);
dvander@27	5241	insert_constval(csp,cse,itoh(lbl_case),val,0);
dvander@27	5242	if (matchtoken(tDBLDOT)) {
dvander@101	5243	error(1, ":", "..");
dvander@27	5244	} /* if */
dvander@27	5245	} while (matchtoken(','));
dvander@27	5246	needtoken(':'); /* ':' ends the case */
dvander@27	5247	sc_allowtags=(short)POPSTK_I(); /* reset */
dvander@27	5248	setlabel(lbl_case);
dvander@27	5249	statement(NULL,FALSE);
dvander@27	5250	jumplabel(lbl_exit);
dvander@27	5251	break;
dvander@27	5252	case tDEFAULT:
dvander@27	5253	if (swdefault!=FALSE)
dvander@27	5254	error(16); /* multiple defaults in switch */
dvander@27	5255	lbl_case=getlabel();
dvander@27	5256	setlabel(lbl_case);
dvander@27	5257	needtoken(':');
dvander@27	5258	swdefault=TRUE;
dvander@27	5259	statement(NULL,FALSE);
dvander@27	5260	/* Jump to lbl_exit, even thouh this is the last clause in the
dvander@27	5261	* switch, because the jump table is generated between the last
dvander@27	5262	* clause of the switch and the exit label.
dvander@27	5263	*/
dvander@27	5264	jumplabel(lbl_exit);
dvander@27	5265	break;
dvander@27	5266	default:
faluco@62	5267	if (tok!=endtok) {
faluco@62	5268	error(2);
faluco@62	5269	indent_nowarn=TRUE; /* disable this check */
faluco@62	5270	tok=endtok; /* break out of the loop after an error */
faluco@62	5271	} /* if */
dvander@27	5272	} /* switch */
faluco@62	5273	} while (tok!=endtok);
dvander@27	5274
dvander@27	5275	#if !defined NDEBUG
dvander@27	5276	/* verify that the case table is sorted (unfortunatly, duplicates can
dvander@27	5277	* occur; there really shouldn't be duplicate cases, but the compiler
dvander@27	5278	* may not crash or drop into an assertion for a user error). */
dvander@27	5279	for (cse=caselist.next; cse!=NULL && cse->next!=NULL; cse=cse->next)
dvander@27	5280	assert(cse->value <= cse->next->value);
dvander@27	5281	#endif
dvander@27	5282	/* generate the table here, before lbl_exit (general jump target) */
dvander@27	5283	setlabel(lbl_table);
dvander@27	5284	assert(swdefault==FALSE \|\| swdefault==TRUE);
dvander@27	5285	if (swdefault==FALSE) {
dvander@27	5286	/* store lbl_exit as the "none-matched" label in the switch table */
dvander@27	5287	strcpy(labelname,itoh(lbl_exit));
dvander@27	5288	} else {
dvander@27	5289	/* lbl_case holds the label of the "default" clause */
dvander@27	5290	strcpy(labelname,itoh(lbl_case));
dvander@27	5291	} /* if */
dvander@27	5292	ffcase(casecount,labelname,TRUE);
dvander@27	5293	/* generate the rest of the table */
dvander@27	5294	for (cse=caselist.next; cse!=NULL; cse=cse->next)
dvander@27	5295	ffcase(cse->value,cse->name,FALSE);
dvander@27	5296
dvander@27	5297	setlabel(lbl_exit);
dvander@27	5298	delete_consttable(&caselist); /* clear list of case labels */
dvander@27	5299	}
dvander@27	5300
dvander@27	5301	static void doassert(void)
dvander@27	5302	{
dvander@27	5303	int flab1,index;
dvander@27	5304	cell cidx;
dvander@27	5305
dvander@27	5306	if ((sc_debug & sCHKBOUNDS)!=0) {
dvander@27	5307	flab1=getlabel(); /* get label number for "OK" branch */
faluco@62	5308	test(flab1,TEST_PLAIN,TRUE);/* get expression and branch to flab1 if true */
dvander@27	5309	insert_dbgline(fline); /* make sure we can find the correct line number */
dvander@27	5310	ffabort(xASSERTION);
dvander@27	5311	setlabel(flab1);
dvander@27	5312	} else {
dvander@27	5313	stgset(TRUE); /* start staging */
dvander@27	5314	stgget(&index,&cidx); /* mark position in code generator */
dvander@27	5315	do {
dvander@27	5316	expression(NULL,NULL,NULL,FALSE);
dvander@27	5317	stgdel(index,cidx); /* just scrap the code */
dvander@27	5318	} while (matchtoken(','));
dvander@27	5319	stgset(FALSE); /* stop staging */
dvander@27	5320	} /* if */
dvander@27	5321	needtoken(tTERM);
dvander@27	5322	}
dvander@27	5323
dvander@27	5324	static void dogoto(void)
dvander@27	5325	{
dvander@27	5326	char *st;
dvander@27	5327	cell val;
dvander@27	5328	symbol *sym;
dvander@27	5329
faluco@62	5330	/* if we were inside an endless loop, assume that we jump out of it */
faluco@62	5331	endlessloop=0;
faluco@62	5332
dvander@27	5333	if (lex(&val,&st)==tSYMBOL) {
dvander@27	5334	sym=fetchlab(st);
dvander@27	5335	jumplabel((int)sym->addr);
dvander@27	5336	sym->usage\|=uREAD; /* set "uREAD" bit */
dvander@27	5337	// ??? if the label is defined (check sym->usage & uDEFINE), check
dvander@27	5338	// sym->compound (nesting level of the label) against nestlevel;
dvander@27	5339	// if sym->compound < nestlevel, call the destructor operator
dvander@27	5340	} else {
dvander@27	5341	error(20,st); /* illegal symbol name */
dvander@27	5342	} /* if */
dvander@27	5343	needtoken(tTERM);
dvander@27	5344	}
dvander@27	5345
dvander@27	5346	static void dolabel(void)
dvander@27	5347	{
dvander@27	5348	char *st;
dvander@27	5349	cell val;
dvander@27	5350	symbol *sym;
dvander@27	5351
dvander@27	5352	tokeninfo(&val,&st); /* retrieve label name again */
dvander@27	5353	if (find_constval(&tagname_tab,st,0)!=NULL)
dvander@27	5354	error(221,st); /* label name shadows tagname */
dvander@27	5355	sym=fetchlab(st);
dvander@27	5356	setlabel((int)sym->addr);
dvander@27	5357	/* since one can jump around variable declarations or out of compound
dvander@27	5358	* blocks, the stack must be manually adjusted
dvander@27	5359	*/
dvander@117	5360	//:TODO: This is actually generated, egads!
dvander@117	5361	//We have to support this and LCTRL/SCTRL
dvander@27	5362	setstk(-declared*sizeof(cell));
dvander@27	5363	sym->usage\|=uDEFINE; /* label is now defined */
dvander@27	5364	}
dvander@27	5365
dvander@27	5366	/* fetchlab
dvander@27	5367	*
dvander@27	5368	* Finds a label from the (local) symbol table or adds one to it.
dvander@27	5369	* Labels are local in scope.
dvander@27	5370	*
dvander@27	5371	* Note: The "_usage" bit is set to zero. The routines that call "fetchlab()"
dvander@27	5372	* must set this bit accordingly.
dvander@27	5373	*/
dvander@27	5374	static symbol fetchlab(char name)
dvander@27	5375	{
dvander@27	5376	symbol *sym;
dvander@27	5377
dvander@27	5378	sym=findloc(name); /* labels are local in scope */
dvander@27	5379	if (sym){
dvander@27	5380	if (sym->ident!=iLABEL)
dvander@27	5381	error(19,sym->name); /* not a label: ... */
dvander@27	5382	} else {
dvander@27	5383	sym=addsym(name,getlabel(),iLABEL,sLOCAL,0,0);
dvander@27	5384	assert(sym!=NULL); /* fatal error 103 must be given on error */
dvander@27	5385	sym->x.declared=(int)declared;
dvander@27	5386	sym->compound=nestlevel;
dvander@27	5387	} /* if */
dvander@27	5388	return sym;
dvander@27	5389	}
dvander@27	5390
dvander@27	5391	/* doreturn
dvander@27	5392	*
dvander@27	5393	* Global references: rettype (altered)
dvander@27	5394	*/
dvander@27	5395	static void doreturn(void)
dvander@27	5396	{
dvander@27	5397	int tag,ident;
dvander@27	5398	int level;
dvander@27	5399	symbol sym,sub;
dvander@27	5400
dvander@27	5401	if (!matchtoken(tTERM)) {
dvander@27	5402	/* "return <value>" */
dvander@27	5403	if ((rettype & uRETNONE)!=0)
dvander@27	5404	error(78); /* mix "return;" and "return value;" */
dvander@103	5405	ident=doexpr(TRUE,FALSE,TRUE,FALSE,&tag,&sym,TRUE);
dvander@27	5406	needtoken(tTERM);
dvander@27	5407	/* see if this function already has a sub type (an array attached) */
dvander@27	5408	sub=finddepend(curfunc);
dvander@27	5409	assert(sub==NULL \|\| sub->ident==iREFARRAY);
dvander@27	5410	if ((rettype & uRETVALUE)!=0) {
dvander@27	5411	int retarray=(ident==iARRAY \|\| ident==iREFARRAY);
dvander@27	5412	/* there was an earlier "return" statement in this function */
dvander@27	5413	if (sub==NULL && retarray \|\| sub!=NULL && !retarray)
dvander@27	5414	error(79); /* mixing "return array;" and "return value;" */
dvander@27	5415	if (retarray && (curfunc->usage & uPUBLIC)!=0)
dvander@27	5416	error(90,curfunc->name); /* public function may not return array */
dvander@27	5417	} /* if */
dvander@27	5418	rettype\|=uRETVALUE; /* function returns a value */
dvander@27	5419	/* check tagname with function tagname */
dvander@27	5420	assert(curfunc!=NULL);
dvander@27	5421	if (!matchtag(curfunc->tag,tag,TRUE))
dvander@27	5422	error(213); /* tagname mismatch */
dvander@27	5423	if (ident==iARRAY \|\| ident==iREFARRAY) {
dvander@27	5424	int dim[sDIMEN_MAX],numdim;
dvander@27	5425	cell arraysize;
dvander@27	5426	assert(sym!=NULL);
dvander@27	5427	if (sub!=NULL) {
dvander@27	5428	assert(sub->ident==iREFARRAY);
dvander@27	5429	/* this function has an array attached already; check that the current
dvander@27	5430	* "return" statement returns exactly the same array
dvander@27	5431	*/
dvander@27	5432	level=sym->dim.array.level;
dvander@27	5433	if (sub->dim.array.level!=level) {
dvander@27	5434	error(48); /* array dimensions must match */
dvander@27	5435	} else {
dvander@27	5436	for (numdim=0; numdim<=level; numdim++) {
dvander@27	5437	dim[numdim]=(int)sub->dim.array.length;
dvander@27	5438	if (sym->dim.array.length!=dim[numdim])
dvander@27	5439	error(47); /* array sizes must match */
dvander@27	5440	if (numdim<level) {
dvander@27	5441	sym=finddepend(sym);
dvander@27	5442	sub=finddepend(sub);
dvander@27	5443	assert(sym!=NULL && sub!=NULL);
dvander@27	5444	/* ^^^ both arrays have the same dimensions (this was checked
dvander@27	5445	* earlier) so the dependend should always be found
dvander@27	5446	*/
dvander@27	5447	} /* if */
dvander@27	5448	} /* for */
dvander@27	5449	} /* if */
dvander@27	5450	} else {
dvander@27	5451	int idxtag[sDIMEN_MAX];
dvander@27	5452	int argcount;
dvander@27	5453	/* this function does not yet have an array attached; clone the
dvander@27	5454	* returned symbol beneath the current function
dvander@27	5455	*/
dvander@27	5456	sub=sym;
dvander@27	5457	assert(sub!=NULL);
dvander@27	5458	level=sub->dim.array.level;
dvander@27	5459	for (numdim=0; numdim<=level; numdim++) {
dvander@27	5460	dim[numdim]=(int)sub->dim.array.length;
dvander@27	5461	idxtag[numdim]=sub->x.tags.index;
dvander@27	5462	if (numdim<level) {
dvander@27	5463	sub=finddepend(sub);
dvander@27	5464	assert(sub!=NULL);
dvander@27	5465	} /* if */
dvander@27	5466	/* check that all dimensions are known */
dvander@27	5467	if (dim[numdim]<=0)
dvander@27	5468	error(46,sym->name);
dvander@27	5469	} /* for */
dvander@27	5470	/* the address of the array is stored in a hidden parameter; the address
dvander@27	5471	* of this parameter is 1 + the number of parameters (times the size of
dvander@27	5472	* a cell) + the size of the stack frame and the return address
dvander@27	5473	* base + 0*sizeof(cell) == previous "base"
dvander@27	5474	* base + 1*sizeof(cell) == function return address
dvander@27	5475	* base + 2*sizeof(cell) == number of arguments
dvander@27	5476	* base + 3*sizeof(cell) == first argument of the function
dvander@27	5477	* ...
dvander@27	5478	* base + ((n-1)+3)*sizeof(cell) == last argument of the function
dvander@27	5479	* base + (n+3)*sizeof(cell) == hidden parameter with array address
dvander@27	5480	*/
dvander@27	5481	assert(curfunc!=NULL);
dvander@27	5482	assert(curfunc->dim.arglist!=NULL);
dvander@27	5483	for (argcount=0; curfunc->dim.arglist[argcount].ident!=0; argcount++)
dvander@27	5484	/* nothing */;
dvander@27	5485	sub=addvariable(curfunc->name,(argcount+3)*sizeof(cell),iREFARRAY,sGLOBAL,curfunc->tag,dim,numdim,idxtag);
dvander@27	5486	sub->parent=curfunc;
dvander@27	5487	} /* if */
dvander@27	5488	/* get the hidden parameter, copy the array (the array is on the heap;
dvander@27	5489	* it stays on the heap for the moment, and it is removed -usually- at
dvander@27	5490	* the end of the expression/statement, see expression() in SC3.C)
dvander@27	5491	*/
dvander@27	5492	address(sub,sALT); /* ALT = destination */
dvander@27	5493	arraysize=calc_arraysize(dim,numdim,0);
dvander@27	5494	memcopy(arraysizesizeof(cell)); / source already in PRI */
dvander@27	5495	/* moveto1(); is not necessary, callfunction() does a popreg() */
dvander@27	5496	} /* if */
dvander@27	5497	} else {
dvander@27	5498	/* this return statement contains no expression */
dvander@27	5499	ldconst(0,sPRI);
dvander@27	5500	if ((rettype & uRETVALUE)!=0) {
dvander@27	5501	char symname[2sNAMEMAX+16]; / allow space for user defined operators */
dvander@27	5502	assert(curfunc!=NULL);
dvander@27	5503	funcdisplayname(symname,curfunc->name);
dvander@27	5504	error(209,symname); /* function should return a value */
dvander@27	5505	} /* if */
dvander@27	5506	rettype\|=uRETNONE; /* function does not return anything */
dvander@27	5507	} /* if */
dvander@27	5508	destructsymbols(&loctab,0); /* call destructor for all locals */
dvander@117	5509	genstackfree(-1); /* free everything on the stack */
dvander@27	5510	ffret(strcmp(curfunc->name,uENTRYFUNC)!=0);
dvander@27	5511	}
dvander@27	5512
dvander@27	5513	static void dobreak(void)
dvander@27	5514	{
dvander@27	5515	int *ptr;
dvander@27	5516
faluco@62	5517	endlessloop=0; /* if we were inside an endless loop, we just jumped out */
dvander@27	5518	ptr=readwhile(); /* readwhile() gives an error if not in loop */
dvander@27	5519	needtoken(tTERM);
dvander@27	5520	if (ptr==NULL)
dvander@27	5521	return;
dvander@27	5522	destructsymbols(&loctab,nestlevel);
dvander@117	5523	genstackfree(ptr[wqBRK]);
dvander@27	5524	jumplabel(ptr[wqEXIT]);
dvander@27	5525	}
dvander@27	5526
dvander@27	5527	static void docont(void)
dvander@27	5528	{
dvander@27	5529	int *ptr;
dvander@27	5530
dvander@27	5531	ptr=readwhile(); /* readwhile() gives an error if not in loop */
dvander@27	5532	needtoken(tTERM);
dvander@27	5533	if (ptr==NULL)
dvander@27	5534	return;
dvander@27	5535	destructsymbols(&loctab,nestlevel);
dvander@117	5536	genstackfree(ptr[wqCONT]);
dvander@27	5537	jumplabel(ptr[wqLOOP]);
dvander@27	5538	}
dvander@27	5539
dvander@27	5540	SC_FUNC void exporttag(int tag)
dvander@27	5541	{
dvander@27	5542	/* find the tag by value in the table, then set the top bit to mark it
dvander@27	5543	* "public"
dvander@27	5544	*/
dvander@27	5545	if (tag!=0 && (tag & PUBLICTAG)==0) {
dvander@27	5546	constvalue *ptr;
dvander@27	5547	for (ptr=tagname_tab.next; ptr!=NULL && tag!=(int)(ptr->value & TAGMASK); ptr=ptr->next)
dvander@27	5548	/* nothing */;
dvander@27	5549	if (ptr!=NULL)
dvander@27	5550	ptr->value \|= PUBLICTAG;
dvander@27	5551	} /* if */
dvander@27	5552	}
dvander@27	5553
dvander@27	5554	static void doexit(void)
dvander@27	5555	{
dvander@27	5556	int tag=0;
dvander@27	5557
dvander@27	5558	if (matchtoken(tTERM)==0){
dvander@27	5559	doexpr(TRUE,FALSE,FALSE,TRUE,&tag,NULL,TRUE);
dvander@27	5560	needtoken(tTERM);
dvander@27	5561	} else {
dvander@27	5562	ldconst(0,sPRI);
dvander@27	5563	} /* if */
dvander@27	5564	ldconst(tag,sALT);
dvander@27	5565	exporttag(tag);
dvander@27	5566	destructsymbols(&loctab,0); /* call destructor for all locals */
dvander@27	5567	ffabort(xEXIT);
dvander@27	5568	}
dvander@27	5569
dvander@27	5570	static void dosleep(void)
dvander@27	5571	{
dvander@27	5572	int tag=0;
dvander@27	5573
dvander@27	5574	if (matchtoken(tTERM)==0){
dvander@27	5575	doexpr(TRUE,FALSE,FALSE,TRUE,&tag,NULL,TRUE);
dvander@27	5576	needtoken(tTERM);
dvander@27	5577	} else {
dvander@27	5578	ldconst(0,sPRI);
dvander@27	5579	} /* if */
dvander@27	5580	ldconst(tag,sALT);
dvander@27	5581	exporttag(tag);
dvander@27	5582	ffabort(xSLEEP);
dvander@27	5583
dvander@27	5584	/* for stack usage checking, mark the use of the sleep instruction */
dvander@27	5585	pc_memflags \|= suSLEEP_INSTR;
dvander@27	5586	}
dvander@27	5587
dvander@27	5588	static void dostate(void)
dvander@27	5589	{
dvander@27	5590	char name[sNAMEMAX+1];
dvander@27	5591	constvalue *automaton;
dvander@27	5592	constvalue *state;
dvander@27	5593	constvalue *stlist;
dvander@27	5594	int flabel;
dvander@27	5595	symbol *sym;
dvander@27	5596	#if !defined SC_LIGHT
dvander@27	5597	int length,index,listid,listindex,stateindex;
dvander@27	5598	char *doc;
dvander@27	5599	#endif
dvander@27	5600
dvander@27	5601	/* check for an optional condition */
dvander@27	5602	if (matchtoken('(')) {
dvander@27	5603	flabel=getlabel(); /* get label number for "false" branch */
dvander@27	5604	pc_docexpr=TRUE; /* attach expression as a documentation string */
faluco@62	5605	test(flabel,TEST_PLAIN,FALSE);/* get expression, branch to flabel if false */
dvander@27	5606	pc_docexpr=FALSE;
dvander@27	5607	needtoken(')');
dvander@27	5608	} else {
dvander@27	5609	flabel=-1;
dvander@27	5610	} /* if */
dvander@27	5611
dvander@27	5612	if (!sc_getstateid(&automaton,&state)) {
dvander@27	5613	delete_autolisttable();
dvander@27	5614	return;
dvander@27	5615	} /* if */
dvander@27	5616	needtoken(tTERM);
dvander@27	5617
dvander@27	5618	/* store the new state id */
dvander@27	5619	assert(state!=NULL);
dvander@27	5620	ldconst(state->value,sPRI);
dvander@27	5621	assert(automaton!=NULL);
dvander@27	5622	assert(automaton->index==0 && automaton->name[0]=='\0' \|\| automaton->index>0);
dvander@27	5623	storereg(automaton->value,sPRI);
dvander@27	5624
dvander@27	5625	/* find the optional entry() function for the state */
dvander@27	5626	sym=findglb(uENTRYFUNC,sGLOBAL);
dvander@27	5627	if (sc_status==statWRITE && sym!=NULL && sym->ident==iFUNCTN && sym->states!=NULL) {
dvander@27	5628	for (stlist=sym->states->next; stlist!=NULL; stlist=stlist->next) {
dvander@27	5629	assert(strlen(stlist->name)!=0);
dvander@27	5630	if (state_getfsa(stlist->index)==automaton->index && state_inlist(stlist->index,(int)state->value))
dvander@27	5631	break; /* found! */
dvander@27	5632	} /* for */
dvander@27	5633	assert(stlist==NULL \|\| state_inlist(stlist->index,state->value));
dvander@27	5634	if (stlist!=NULL) {
dvander@27	5635	/* the label to jump to is in stlist->name */
dvander@27	5636	ffcall(sym,stlist->name,0);
dvander@27	5637	} /* if */
dvander@27	5638	} /* if */
dvander@27	5639
dvander@27	5640	if (flabel>=0)
dvander@27	5641	setlabel(flabel); /* condition was false, jump around the state switch */
dvander@27	5642
dvander@27	5643	#if !defined SC_LIGHT
dvander@27	5644	/* mark for documentation */
dvander@27	5645	if (sc_status==statFIRST) {
dvander@27	5646	char *str;
dvander@27	5647	/* get the last list id attached to the function, this contains the source states */
dvander@27	5648	assert(curfunc!=NULL);
dvander@27	5649	if (curfunc->states!=NULL) {
dvander@27	5650	stlist=curfunc->states->next;
dvander@27	5651	assert(stlist!=NULL);
dvander@27	5652	while (stlist->next!=NULL)
dvander@27	5653	stlist=stlist->next;
dvander@27	5654	listid=stlist->index;
dvander@27	5655	} else {
dvander@27	5656	listid=-1;
dvander@27	5657	} /* if */
dvander@27	5658	listindex=0;
dvander@27	5659	length=strlen(name)+70; /* +70 for the fixed part "<transition ... />\n" */
dvander@27	5660	/* see if there are any condition strings to attach */
dvander@27	5661	for (index=0; (str=get_autolist(index))!=NULL; index++)
dvander@27	5662	length+=strlen(str);
dvander@27	5663	if ((doc=(char)malloc(lengthsizeof(char)))!=NULL) {
dvander@27	5664	do {
dvander@27	5665	sprintf(doc,"<transition target=\"%s\"",name);
dvander@27	5666	if (listid>=0) {
dvander@27	5667	/* get the source state */
dvander@27	5668	stateindex=state_listitem(listid,listindex);
dvander@27	5669	state=state_findid(stateindex);
dvander@27	5670	assert(state!=NULL);
dvander@27	5671	sprintf(doc+strlen(doc)," source=\"%s\"",state->name);
dvander@27	5672	} /* if */
dvander@27	5673	if (get_autolist(0)!=NULL) {
dvander@27	5674	/* add the condition */
dvander@27	5675	strcat(doc," condition=\"");
dvander@27	5676	for (index=0; (str=get_autolist(index))!=NULL; index++) {
dvander@27	5677	/* remove the ')' token that may be appended before detecting that the expression has ended */
dvander@27	5678	if (str!=')' \|\| (str+1)!='\0' \|\| get_autolist(index+1)!=NULL)
dvander@27	5679	strcat(doc,str);
dvander@27	5680	} /* for */
dvander@27	5681	strcat(doc,"\"");
dvander@27	5682	} /* if */
dvander@27	5683	strcat(doc,"/>\n");
dvander@27	5684	insert_docstring(doc);
dvander@27	5685	} while (listid>=0 && ++listindex<state_count(listid));
dvander@27	5686	free(doc);
dvander@27	5687	} /* if */
dvander@27	5688	} /* if */
dvander@27	5689	#endif
dvander@27	5690	delete_autolisttable();
dvander@27	5691	}
dvander@27	5692
dvander@27	5693
dvander@27	5694	static void addwhile(int *ptr)
dvander@27	5695	{
dvander@27	5696	int k;
dvander@27	5697
dvander@27	5698	ptr[wqBRK]=(int)declared; /* stack pointer (for "break") */
dvander@27	5699	ptr[wqCONT]=(int)declared; /* for "continue", possibly adjusted later */
dvander@27	5700	ptr[wqLOOP]=getlabel();
dvander@27	5701	ptr[wqEXIT]=getlabel();
dvander@27	5702	if (wqptr>=(wq+wqTABSZ-wqSIZE))
dvander@27	5703	error(102,"loop table"); /* loop table overflow (too many active loops)*/
dvander@27	5704	k=0;
dvander@27	5705	while (k<wqSIZE){ /* copy "ptr" to while queue table */
dvander@27	5706	wqptr=ptr;
dvander@27	5707	wqptr+=1;
dvander@27	5708	ptr+=1;
dvander@27	5709	k+=1;
dvander@27	5710	} /* while */
dvander@27	5711	}
dvander@27	5712
dvander@27	5713	static void delwhile(void)
dvander@27	5714	{
dvander@27	5715	if (wqptr>wq)
dvander@27	5716	wqptr-=wqSIZE;
dvander@27	5717	}
dvander@27	5718
dvander@27	5719	static int *readwhile(void)
dvander@27	5720	{
dvander@27	5721	if (wqptr<=wq){
dvander@27	5722	error(24); /* out of context */
dvander@27	5723	return NULL;
dvander@27	5724	} else {
dvander@27	5725	return (wqptr-wqSIZE);
dvander@27	5726	} /* if */
dvander@27	5727	}
dvander@27	5728

author	David Anderson <dvander@alliedmods.net>
	Sun Oct 15 23:31:09 2006 +0000 (2006-10-15)
changeset 117	f1edbb5d485a
parent 116	4965c485f121
child 118	0cfeb76486a2
permissions	-rw-r--r--