1.1 --- a/extensions/sqlite/sqlite-source/sqliteInt.h Fri Mar 28 06:21:34 2008 +0000
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,1972 +0,0 @@
1.4 -/*
1.5 -** 2001 September 15
1.6 -**
1.7 -** The author disclaims copyright to this source code. In place of
1.8 -** a legal notice, here is a blessing:
1.9 -**
1.10 -** May you do good and not evil.
1.11 -** May you find forgiveness for yourself and forgive others.
1.12 -** May you share freely, never taking more than you give.
1.13 -**
1.14 -*************************************************************************
1.15 -** Internal interface definitions for SQLite.
1.16 -**
1.17 -** @(#) $Id$
1.18 -*/
1.19 -#ifndef _SQLITEINT_H_
1.20 -#define _SQLITEINT_H_
1.21 -#include "sqliteLimit.h"
1.22 -
1.23 -/*
1.24 -** For testing purposes, the various size limit constants are really
1.25 -** variables that we can modify in the testfixture.
1.26 -*/
1.27 -#ifdef SQLITE_TEST
1.28 - #undef SQLITE_MAX_LENGTH
1.29 - #undef SQLITE_MAX_COLUMN
1.30 - #undef SQLITE_MAX_SQL_LENGTH
1.31 - #undef SQLITE_MAX_EXPR_DEPTH
1.32 - #undef SQLITE_MAX_COMPOUND_SELECT
1.33 - #undef SQLITE_MAX_VDBE_OP
1.34 - #undef SQLITE_MAX_FUNCTION_ARG
1.35 - #undef SQLITE_MAX_VARIABLE_NUMBER
1.36 - #undef SQLITE_MAX_PAGE_SIZE
1.37 - #undef SQLITE_MAX_PAGE_COUNT
1.38 - #undef SQLITE_MAX_LIKE_PATTERN_LENGTH
1.39 -
1.40 - #define SQLITE_MAX_LENGTH sqlite3MAX_LENGTH
1.41 - #define SQLITE_MAX_COLUMN sqlite3MAX_COLUMN
1.42 - #define SQLITE_MAX_SQL_LENGTH sqlite3MAX_SQL_LENGTH
1.43 - #define SQLITE_MAX_EXPR_DEPTH sqlite3MAX_EXPR_DEPTH
1.44 - #define SQLITE_MAX_COMPOUND_SELECT sqlite3MAX_COMPOUND_SELECT
1.45 - #define SQLITE_MAX_VDBE_OP sqlite3MAX_VDBE_OP
1.46 - #define SQLITE_MAX_FUNCTION_ARG sqlite3MAX_FUNCTION_ARG
1.47 - #define SQLITE_MAX_VARIABLE_NUMBER sqlite3MAX_VARIABLE_NUMBER
1.48 - #define SQLITE_MAX_PAGE_SIZE sqlite3MAX_PAGE_SIZE
1.49 - #define SQLITE_MAX_PAGE_COUNT sqlite3MAX_PAGE_COUNT
1.50 - #define SQLITE_MAX_LIKE_PATTERN_LENGTH sqlite3MAX_LIKE_PATTERN_LENGTH
1.51 -
1.52 - extern int sqlite3MAX_LENGTH;
1.53 - extern int sqlite3MAX_COLUMN;
1.54 - extern int sqlite3MAX_SQL_LENGTH;
1.55 - extern int sqlite3MAX_EXPR_DEPTH;
1.56 - extern int sqlite3MAX_COMPOUND_SELECT;
1.57 - extern int sqlite3MAX_VDBE_OP;
1.58 - extern int sqlite3MAX_FUNCTION_ARG;
1.59 - extern int sqlite3MAX_VARIABLE_NUMBER;
1.60 - extern int sqlite3MAX_PAGE_SIZE;
1.61 - extern int sqlite3MAX_PAGE_COUNT;
1.62 - extern int sqlite3MAX_LIKE_PATTERN_LENGTH;
1.63 -#endif
1.64 -
1.65 -
1.66 -/*
1.67 -** The SQLITE_THREADSAFE macro must be defined as either 0 or 1.
1.68 -** Older versions of SQLite used an optional THREADSAFE macro.
1.69 -** We support that for legacy
1.70 -*/
1.71 -#if !defined(SQLITE_THREADSAFE)
1.72 -#if defined(THREADSAFE)
1.73 -# define SQLITE_THREADSAFE THREADSAFE
1.74 -#else
1.75 -# define SQLITE_THREADSAFE 1
1.76 -#endif
1.77 -#endif
1.78 -
1.79 -/*
1.80 -** We need to define _XOPEN_SOURCE as follows in order to enable
1.81 -** recursive mutexes on most unix systems. But Mac OS X is different.
1.82 -** The _XOPEN_SOURCE define causes problems for Mac OS X we are told,
1.83 -** so it is omitted there. See ticket #2673.
1.84 -**
1.85 -** Later we learn that _XOPEN_SOURCE is poorly or incorrectly
1.86 -** implemented on some systems. So we avoid defining it at all
1.87 -** if it is already defined or if it is unneeded because we are
1.88 -** not doing a threadsafe build. Ticket #2681.
1.89 -*/
1.90 -#if !defined(_XOPEN_SOURCE) && !defined(__MACOS__) && SQLITE_THREADSAFE
1.91 -# define _XOPEN_SOURCE 500 /* Needed to enable pthread recursive mutexes */
1.92 -#endif
1.93 -
1.94 -#if defined(SQLITE_TCL) || defined(TCLSH)
1.95 -# include <tcl.h>
1.96 -#endif
1.97 -
1.98 -/*
1.99 -** Many people are failing to set -DNDEBUG=1 when compiling SQLite.
1.100 -** Setting NDEBUG makes the code smaller and run faster. So the following
1.101 -** lines are added to automatically set NDEBUG unless the -DSQLITE_DEBUG=1
1.102 -** option is set. Thus NDEBUG becomes an opt-in rather than an opt-out
1.103 -** feature.
1.104 -*/
1.105 -#if !defined(NDEBUG) && !defined(SQLITE_DEBUG)
1.106 -# define NDEBUG 1
1.107 -#endif
1.108 -
1.109 -/*
1.110 -** These #defines should enable >2GB file support on Posix if the
1.111 -** underlying operating system supports it. If the OS lacks
1.112 -** large file support, or if the OS is windows, these should be no-ops.
1.113 -**
1.114 -** Large file support can be disabled using the -DSQLITE_DISABLE_LFS switch
1.115 -** on the compiler command line. This is necessary if you are compiling
1.116 -** on a recent machine (ex: RedHat 7.2) but you want your code to work
1.117 -** on an older machine (ex: RedHat 6.0). If you compile on RedHat 7.2
1.118 -** without this option, LFS is enable. But LFS does not exist in the kernel
1.119 -** in RedHat 6.0, so the code won't work. Hence, for maximum binary
1.120 -** portability you should omit LFS.
1.121 -**
1.122 -** Similar is true for MacOS. LFS is only supported on MacOS 9 and later.
1.123 -*/
1.124 -#ifndef SQLITE_DISABLE_LFS
1.125 -# define _LARGE_FILE 1
1.126 -# ifndef _FILE_OFFSET_BITS
1.127 -# define _FILE_OFFSET_BITS 64
1.128 -# endif
1.129 -# define _LARGEFILE_SOURCE 1
1.130 -#endif
1.131 -
1.132 -#include "sqlite3.h"
1.133 -#include "hash.h"
1.134 -#include "parse.h"
1.135 -#include <stdio.h>
1.136 -#include <stdlib.h>
1.137 -#include <string.h>
1.138 -#include <assert.h>
1.139 -#include <stddef.h>
1.140 -
1.141 -#define sqlite3_isnan(X) ((X)!=(X))
1.142 -
1.143 -/*
1.144 -** If compiling for a processor that lacks floating point support,
1.145 -** substitute integer for floating-point
1.146 -*/
1.147 -#ifdef SQLITE_OMIT_FLOATING_POINT
1.148 -# define double sqlite_int64
1.149 -# define LONGDOUBLE_TYPE sqlite_int64
1.150 -# ifndef SQLITE_BIG_DBL
1.151 -# define SQLITE_BIG_DBL (0x7fffffffffffffff)
1.152 -# endif
1.153 -# define SQLITE_OMIT_DATETIME_FUNCS 1
1.154 -# define SQLITE_OMIT_TRACE 1
1.155 -# undef SQLITE_MIXED_ENDIAN_64BIT_FLOAT
1.156 -#endif
1.157 -#ifndef SQLITE_BIG_DBL
1.158 -# define SQLITE_BIG_DBL (1e99)
1.159 -#endif
1.160 -
1.161 -/*
1.162 -** OMIT_TEMPDB is set to 1 if SQLITE_OMIT_TEMPDB is defined, or 0
1.163 -** afterward. Having this macro allows us to cause the C compiler
1.164 -** to omit code used by TEMP tables without messy #ifndef statements.
1.165 -*/
1.166 -#ifdef SQLITE_OMIT_TEMPDB
1.167 -#define OMIT_TEMPDB 1
1.168 -#else
1.169 -#define OMIT_TEMPDB 0
1.170 -#endif
1.171 -
1.172 -/*
1.173 -** If the following macro is set to 1, then NULL values are considered
1.174 -** distinct when determining whether or not two entries are the same
1.175 -** in a UNIQUE index. This is the way PostgreSQL, Oracle, DB2, MySQL,
1.176 -** OCELOT, and Firebird all work. The SQL92 spec explicitly says this
1.177 -** is the way things are suppose to work.
1.178 -**
1.179 -** If the following macro is set to 0, the NULLs are indistinct for
1.180 -** a UNIQUE index. In this mode, you can only have a single NULL entry
1.181 -** for a column declared UNIQUE. This is the way Informix and SQL Server
1.182 -** work.
1.183 -*/
1.184 -#define NULL_DISTINCT_FOR_UNIQUE 1
1.185 -
1.186 -/*
1.187 -** The "file format" number is an integer that is incremented whenever
1.188 -** the VDBE-level file format changes. The following macros define the
1.189 -** the default file format for new databases and the maximum file format
1.190 -** that the library can read.
1.191 -*/
1.192 -#define SQLITE_MAX_FILE_FORMAT 4
1.193 -#ifndef SQLITE_DEFAULT_FILE_FORMAT
1.194 -# define SQLITE_DEFAULT_FILE_FORMAT 1
1.195 -#endif
1.196 -
1.197 -/*
1.198 -** Provide a default value for TEMP_STORE in case it is not specified
1.199 -** on the command-line
1.200 -*/
1.201 -#ifndef TEMP_STORE
1.202 -# define TEMP_STORE 1
1.203 -#endif
1.204 -
1.205 -/*
1.206 -** GCC does not define the offsetof() macro so we'll have to do it
1.207 -** ourselves.
1.208 -*/
1.209 -#ifndef offsetof
1.210 -#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD))
1.211 -#endif
1.212 -
1.213 -/*
1.214 -** Check to see if this machine uses EBCDIC. (Yes, believe it or
1.215 -** not, there are still machines out there that use EBCDIC.)
1.216 -*/
1.217 -#if 'A' == '\301'
1.218 -# define SQLITE_EBCDIC 1
1.219 -#else
1.220 -# define SQLITE_ASCII 1
1.221 -#endif
1.222 -
1.223 -/*
1.224 -** Integers of known sizes. These typedefs might change for architectures
1.225 -** where the sizes very. Preprocessor macros are available so that the
1.226 -** types can be conveniently redefined at compile-type. Like this:
1.227 -**
1.228 -** cc '-DUINTPTR_TYPE=long long int' ...
1.229 -*/
1.230 -#ifndef UINT32_TYPE
1.231 -# define UINT32_TYPE unsigned int
1.232 -#endif
1.233 -#ifndef UINT16_TYPE
1.234 -# define UINT16_TYPE unsigned short int
1.235 -#endif
1.236 -#ifndef INT16_TYPE
1.237 -# define INT16_TYPE short int
1.238 -#endif
1.239 -#ifndef UINT8_TYPE
1.240 -# define UINT8_TYPE unsigned char
1.241 -#endif
1.242 -#ifndef INT8_TYPE
1.243 -# define INT8_TYPE signed char
1.244 -#endif
1.245 -#ifndef LONGDOUBLE_TYPE
1.246 -# define LONGDOUBLE_TYPE long double
1.247 -#endif
1.248 -typedef sqlite_int64 i64; /* 8-byte signed integer */
1.249 -typedef sqlite_uint64 u64; /* 8-byte unsigned integer */
1.250 -typedef UINT32_TYPE u32; /* 4-byte unsigned integer */
1.251 -typedef UINT16_TYPE u16; /* 2-byte unsigned integer */
1.252 -typedef INT16_TYPE i16; /* 2-byte signed integer */
1.253 -typedef UINT8_TYPE u8; /* 1-byte unsigned integer */
1.254 -typedef UINT8_TYPE i8; /* 1-byte signed integer */
1.255 -
1.256 -/*
1.257 -** Macros to determine whether the machine is big or little endian,
1.258 -** evaluated at runtime.
1.259 -*/
1.260 -#ifdef SQLITE_AMALGAMATION
1.261 -const int sqlite3One;
1.262 -#else
1.263 -extern const int sqlite3one;
1.264 -#endif
1.265 -#if defined(i386) || defined(__i386__) || defined(_M_IX86)
1.266 -# define SQLITE_BIGENDIAN 0
1.267 -# define SQLITE_LITTLEENDIAN 1
1.268 -# define SQLITE_UTF16NATIVE SQLITE_UTF16LE
1.269 -#else
1.270 -# define SQLITE_BIGENDIAN (*(char *)(&sqlite3one)==0)
1.271 -# define SQLITE_LITTLEENDIAN (*(char *)(&sqlite3one)==1)
1.272 -# define SQLITE_UTF16NATIVE (SQLITE_BIGENDIAN?SQLITE_UTF16BE:SQLITE_UTF16LE)
1.273 -#endif
1.274 -
1.275 -/*
1.276 -** An instance of the following structure is used to store the busy-handler
1.277 -** callback for a given sqlite handle.
1.278 -**
1.279 -** The sqlite.busyHandler member of the sqlite struct contains the busy
1.280 -** callback for the database handle. Each pager opened via the sqlite
1.281 -** handle is passed a pointer to sqlite.busyHandler. The busy-handler
1.282 -** callback is currently invoked only from within pager.c.
1.283 -*/
1.284 -typedef struct BusyHandler BusyHandler;
1.285 -struct BusyHandler {
1.286 - int (*xFunc)(void *,int); /* The busy callback */
1.287 - void *pArg; /* First arg to busy callback */
1.288 - int nBusy; /* Incremented with each busy call */
1.289 -};
1.290 -
1.291 -/*
1.292 -** Defer sourcing vdbe.h and btree.h until after the "u8" and
1.293 -** "BusyHandler typedefs.
1.294 -*/
1.295 -#include "btree.h"
1.296 -#include "vdbe.h"
1.297 -#include "pager.h"
1.298 -
1.299 -
1.300 -/*
1.301 -** Name of the master database table. The master database table
1.302 -** is a special table that holds the names and attributes of all
1.303 -** user tables and indices.
1.304 -*/
1.305 -#define MASTER_NAME "sqlite_master"
1.306 -#define TEMP_MASTER_NAME "sqlite_temp_master"
1.307 -
1.308 -/*
1.309 -** The root-page of the master database table.
1.310 -*/
1.311 -#define MASTER_ROOT 1
1.312 -
1.313 -/*
1.314 -** The name of the schema table.
1.315 -*/
1.316 -#define SCHEMA_TABLE(x) ((!OMIT_TEMPDB)&&(x==1)?TEMP_MASTER_NAME:MASTER_NAME)
1.317 -
1.318 -/*
1.319 -** A convenience macro that returns the number of elements in
1.320 -** an array.
1.321 -*/
1.322 -#define ArraySize(X) (sizeof(X)/sizeof(X[0]))
1.323 -
1.324 -/*
1.325 -** Forward references to structures
1.326 -*/
1.327 -typedef struct AggInfo AggInfo;
1.328 -typedef struct AuthContext AuthContext;
1.329 -typedef struct CollSeq CollSeq;
1.330 -typedef struct Column Column;
1.331 -typedef struct Db Db;
1.332 -typedef struct Schema Schema;
1.333 -typedef struct Expr Expr;
1.334 -typedef struct ExprList ExprList;
1.335 -typedef struct FKey FKey;
1.336 -typedef struct FuncDef FuncDef;
1.337 -typedef struct IdList IdList;
1.338 -typedef struct Index Index;
1.339 -typedef struct KeyClass KeyClass;
1.340 -typedef struct KeyInfo KeyInfo;
1.341 -typedef struct Module Module;
1.342 -typedef struct NameContext NameContext;
1.343 -typedef struct Parse Parse;
1.344 -typedef struct Select Select;
1.345 -typedef struct SrcList SrcList;
1.346 -typedef struct Table Table;
1.347 -typedef struct TableLock TableLock;
1.348 -typedef struct Token Token;
1.349 -typedef struct TriggerStack TriggerStack;
1.350 -typedef struct TriggerStep TriggerStep;
1.351 -typedef struct Trigger Trigger;
1.352 -typedef struct WhereInfo WhereInfo;
1.353 -typedef struct WhereLevel WhereLevel;
1.354 -
1.355 -#include "os.h"
1.356 -#include "mutex.h"
1.357 -
1.358 -/*
1.359 -** Each database file to be accessed by the system is an instance
1.360 -** of the following structure. There are normally two of these structures
1.361 -** in the sqlite.aDb[] array. aDb[0] is the main database file and
1.362 -** aDb[1] is the database file used to hold temporary tables. Additional
1.363 -** databases may be attached.
1.364 -*/
1.365 -struct Db {
1.366 - char *zName; /* Name of this database */
1.367 - Btree *pBt; /* The B*Tree structure for this database file */
1.368 - u8 inTrans; /* 0: not writable. 1: Transaction. 2: Checkpoint */
1.369 - u8 safety_level; /* How aggressive at synching data to disk */
1.370 - void *pAux; /* Auxiliary data. Usually NULL */
1.371 - void (*xFreeAux)(void*); /* Routine to free pAux */
1.372 - Schema *pSchema; /* Pointer to database schema (possibly shared) */
1.373 -};
1.374 -
1.375 -/*
1.376 -** An instance of the following structure stores a database schema.
1.377 -**
1.378 -** If there are no virtual tables configured in this schema, the
1.379 -** Schema.db variable is set to NULL. After the first virtual table
1.380 -** has been added, it is set to point to the database connection
1.381 -** used to create the connection. Once a virtual table has been
1.382 -** added to the Schema structure and the Schema.db variable populated,
1.383 -** only that database connection may use the Schema to prepare
1.384 -** statements.
1.385 -*/
1.386 -struct Schema {
1.387 - int schema_cookie; /* Database schema version number for this file */
1.388 - Hash tblHash; /* All tables indexed by name */
1.389 - Hash idxHash; /* All (named) indices indexed by name */
1.390 - Hash trigHash; /* All triggers indexed by name */
1.391 - Hash aFKey; /* Foreign keys indexed by to-table */
1.392 - Table *pSeqTab; /* The sqlite_sequence table used by AUTOINCREMENT */
1.393 - u8 file_format; /* Schema format version for this file */
1.394 - u8 enc; /* Text encoding used by this database */
1.395 - u16 flags; /* Flags associated with this schema */
1.396 - int cache_size; /* Number of pages to use in the cache */
1.397 -#ifndef SQLITE_OMIT_VIRTUALTABLE
1.398 - sqlite3 *db; /* "Owner" connection. See comment above */
1.399 -#endif
1.400 -};
1.401 -
1.402 -/*
1.403 -** These macros can be used to test, set, or clear bits in the
1.404 -** Db.flags field.
1.405 -*/
1.406 -#define DbHasProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))==(P))
1.407 -#define DbHasAnyProperty(D,I,P) (((D)->aDb[I].pSchema->flags&(P))!=0)
1.408 -#define DbSetProperty(D,I,P) (D)->aDb[I].pSchema->flags|=(P)
1.409 -#define DbClearProperty(D,I,P) (D)->aDb[I].pSchema->flags&=~(P)
1.410 -
1.411 -/*
1.412 -** Allowed values for the DB.flags field.
1.413 -**
1.414 -** The DB_SchemaLoaded flag is set after the database schema has been
1.415 -** read into internal hash tables.
1.416 -**
1.417 -** DB_UnresetViews means that one or more views have column names that
1.418 -** have been filled out. If the schema changes, these column names might
1.419 -** changes and so the view will need to be reset.
1.420 -*/
1.421 -#define DB_SchemaLoaded 0x0001 /* The schema has been loaded */
1.422 -#define DB_UnresetViews 0x0002 /* Some views have defined column names */
1.423 -#define DB_Empty 0x0004 /* The file is empty (length 0 bytes) */
1.424 -
1.425 -
1.426 -/*
1.427 -** Each database is an instance of the following structure.
1.428 -**
1.429 -** The sqlite.lastRowid records the last insert rowid generated by an
1.430 -** insert statement. Inserts on views do not affect its value. Each
1.431 -** trigger has its own context, so that lastRowid can be updated inside
1.432 -** triggers as usual. The previous value will be restored once the trigger
1.433 -** exits. Upon entering a before or instead of trigger, lastRowid is no
1.434 -** longer (since after version 2.8.12) reset to -1.
1.435 -**
1.436 -** The sqlite.nChange does not count changes within triggers and keeps no
1.437 -** context. It is reset at start of sqlite3_exec.
1.438 -** The sqlite.lsChange represents the number of changes made by the last
1.439 -** insert, update, or delete statement. It remains constant throughout the
1.440 -** length of a statement and is then updated by OP_SetCounts. It keeps a
1.441 -** context stack just like lastRowid so that the count of changes
1.442 -** within a trigger is not seen outside the trigger. Changes to views do not
1.443 -** affect the value of lsChange.
1.444 -** The sqlite.csChange keeps track of the number of current changes (since
1.445 -** the last statement) and is used to update sqlite_lsChange.
1.446 -**
1.447 -** The member variables sqlite.errCode, sqlite.zErrMsg and sqlite.zErrMsg16
1.448 -** store the most recent error code and, if applicable, string. The
1.449 -** internal function sqlite3Error() is used to set these variables
1.450 -** consistently.
1.451 -*/
1.452 -struct sqlite3 {
1.453 - sqlite3_vfs *pVfs; /* OS Interface */
1.454 - int nDb; /* Number of backends currently in use */
1.455 - Db *aDb; /* All backends */
1.456 - int flags; /* Miscellanous flags. See below */
1.457 - int openFlags; /* Flags passed to sqlite3_vfs.xOpen() */
1.458 - int errCode; /* Most recent error code (SQLITE_*) */
1.459 - int errMask; /* & result codes with this before returning */
1.460 - u8 autoCommit; /* The auto-commit flag. */
1.461 - u8 temp_store; /* 1: file 2: memory 0: default */
1.462 - u8 mallocFailed; /* True if we have seen a malloc failure */
1.463 - int nTable; /* Number of tables in the database */
1.464 - CollSeq *pDfltColl; /* The default collating sequence (BINARY) */
1.465 - i64 lastRowid; /* ROWID of most recent insert (see above) */
1.466 - i64 priorNewRowid; /* Last randomly generated ROWID */
1.467 - int magic; /* Magic number for detect library misuse */
1.468 - int nChange; /* Value returned by sqlite3_changes() */
1.469 - int nTotalChange; /* Value returned by sqlite3_total_changes() */
1.470 - sqlite3_mutex *mutex; /* Connection mutex */
1.471 - struct sqlite3InitInfo { /* Information used during initialization */
1.472 - int iDb; /* When back is being initialized */
1.473 - int newTnum; /* Rootpage of table being initialized */
1.474 - u8 busy; /* TRUE if currently initializing */
1.475 - } init;
1.476 - int nExtension; /* Number of loaded extensions */
1.477 - void **aExtension; /* Array of shared libraray handles */
1.478 - struct Vdbe *pVdbe; /* List of active virtual machines */
1.479 - int activeVdbeCnt; /* Number of vdbes currently executing */
1.480 - void (*xTrace)(void*,const char*); /* Trace function */
1.481 - void *pTraceArg; /* Argument to the trace function */
1.482 - void (*xProfile)(void*,const char*,u64); /* Profiling function */
1.483 - void *pProfileArg; /* Argument to profile function */
1.484 - void *pCommitArg; /* Argument to xCommitCallback() */
1.485 - int (*xCommitCallback)(void*); /* Invoked at every commit. */
1.486 - void *pRollbackArg; /* Argument to xRollbackCallback() */
1.487 - void (*xRollbackCallback)(void*); /* Invoked at every commit. */
1.488 - void *pUpdateArg;
1.489 - void (*xUpdateCallback)(void*,int, const char*,const char*,sqlite_int64);
1.490 - void(*xCollNeeded)(void*,sqlite3*,int eTextRep,const char*);
1.491 - void(*xCollNeeded16)(void*,sqlite3*,int eTextRep,const void*);
1.492 - void *pCollNeededArg;
1.493 - sqlite3_value *pErr; /* Most recent error message */
1.494 - char *zErrMsg; /* Most recent error message (UTF-8 encoded) */
1.495 - char *zErrMsg16; /* Most recent error message (UTF-16 encoded) */
1.496 - union {
1.497 - int isInterrupted; /* True if sqlite3_interrupt has been called */
1.498 - double notUsed1; /* Spacer */
1.499 - } u1;
1.500 -#ifndef SQLITE_OMIT_AUTHORIZATION
1.501 - int (*xAuth)(void*,int,const char*,const char*,const char*,const char*);
1.502 - /* Access authorization function */
1.503 - void *pAuthArg; /* 1st argument to the access auth function */
1.504 -#endif
1.505 -#ifndef SQLITE_OMIT_PROGRESS_CALLBACK
1.506 - int (*xProgress)(void *); /* The progress callback */
1.507 - void *pProgressArg; /* Argument to the progress callback */
1.508 - int nProgressOps; /* Number of opcodes for progress callback */
1.509 -#endif
1.510 -#ifndef SQLITE_OMIT_VIRTUALTABLE
1.511 - Hash aModule; /* populated by sqlite3_create_module() */
1.512 - Table *pVTab; /* vtab with active Connect/Create method */
1.513 - sqlite3_vtab **aVTrans; /* Virtual tables with open transactions */
1.514 - int nVTrans; /* Allocated size of aVTrans */
1.515 -#endif
1.516 - Hash aFunc; /* All functions that can be in SQL exprs */
1.517 - Hash aCollSeq; /* All collating sequences */
1.518 - BusyHandler busyHandler; /* Busy callback */
1.519 - int busyTimeout; /* Busy handler timeout, in msec */
1.520 - Db aDbStatic[2]; /* Static space for the 2 default backends */
1.521 -#ifdef SQLITE_SSE
1.522 - sqlite3_stmt *pFetch; /* Used by SSE to fetch stored statements */
1.523 -#endif
1.524 - u8 dfltLockMode; /* Default locking-mode for attached dbs */
1.525 -};
1.526 -
1.527 -/*
1.528 -** A macro to discover the encoding of a database.
1.529 -*/
1.530 -#define ENC(db) ((db)->aDb[0].pSchema->enc)
1.531 -
1.532 -/*
1.533 -** Possible values for the sqlite.flags and or Db.flags fields.
1.534 -**
1.535 -** On sqlite.flags, the SQLITE_InTrans value means that we have
1.536 -** executed a BEGIN. On Db.flags, SQLITE_InTrans means a statement
1.537 -** transaction is active on that particular database file.
1.538 -*/
1.539 -#define SQLITE_VdbeTrace 0x00000001 /* True to trace VDBE execution */
1.540 -#define SQLITE_InTrans 0x00000008 /* True if in a transaction */
1.541 -#define SQLITE_InternChanges 0x00000010 /* Uncommitted Hash table changes */
1.542 -#define SQLITE_FullColNames 0x00000020 /* Show full column names on SELECT */
1.543 -#define SQLITE_ShortColNames 0x00000040 /* Show short columns names */
1.544 -#define SQLITE_CountRows 0x00000080 /* Count rows changed by INSERT, */
1.545 - /* DELETE, or UPDATE and return */
1.546 - /* the count using a callback. */
1.547 -#define SQLITE_NullCallback 0x00000100 /* Invoke the callback once if the */
1.548 - /* result set is empty */
1.549 -#define SQLITE_SqlTrace 0x00000200 /* Debug print SQL as it executes */
1.550 -#define SQLITE_VdbeListing 0x00000400 /* Debug listings of VDBE programs */
1.551 -#define SQLITE_WriteSchema 0x00000800 /* OK to update SQLITE_MASTER */
1.552 -#define SQLITE_NoReadlock 0x00001000 /* Readlocks are omitted when
1.553 - ** accessing read-only databases */
1.554 -#define SQLITE_IgnoreChecks 0x00002000 /* Do not enforce check constraints */
1.555 -#define SQLITE_ReadUncommitted 0x00004000 /* For shared-cache mode */
1.556 -#define SQLITE_LegacyFileFmt 0x00008000 /* Create new databases in format 1 */
1.557 -#define SQLITE_FullFSync 0x00010000 /* Use full fsync on the backend */
1.558 -#define SQLITE_LoadExtension 0x00020000 /* Enable load_extension */
1.559 -
1.560 -#define SQLITE_RecoveryMode 0x00040000 /* Ignore schema errors */
1.561 -#define SQLITE_SharedCache 0x00080000 /* Cache sharing is enabled */
1.562 -#define SQLITE_Vtab 0x00100000 /* There exists a virtual table */
1.563 -
1.564 -/*
1.565 -** Possible values for the sqlite.magic field.
1.566 -** The numbers are obtained at random and have no special meaning, other
1.567 -** than being distinct from one another.
1.568 -*/
1.569 -#define SQLITE_MAGIC_OPEN 0xa029a697 /* Database is open */
1.570 -#define SQLITE_MAGIC_CLOSED 0x9f3c2d33 /* Database is closed */
1.571 -#define SQLITE_MAGIC_BUSY 0xf03b7906 /* Database currently in use */
1.572 -#define SQLITE_MAGIC_ERROR 0xb5357930 /* An SQLITE_MISUSE error occurred */
1.573 -
1.574 -/*
1.575 -** Each SQL function is defined by an instance of the following
1.576 -** structure. A pointer to this structure is stored in the sqlite.aFunc
1.577 -** hash table. When multiple functions have the same name, the hash table
1.578 -** points to a linked list of these structures.
1.579 -*/
1.580 -struct FuncDef {
1.581 - i16 nArg; /* Number of arguments. -1 means unlimited */
1.582 - u8 iPrefEnc; /* Preferred text encoding (SQLITE_UTF8, 16LE, 16BE) */
1.583 - u8 needCollSeq; /* True if sqlite3GetFuncCollSeq() might be called */
1.584 - u8 flags; /* Some combination of SQLITE_FUNC_* */
1.585 - void *pUserData; /* User data parameter */
1.586 - FuncDef *pNext; /* Next function with same name */
1.587 - void (*xFunc)(sqlite3_context*,int,sqlite3_value**); /* Regular function */
1.588 - void (*xStep)(sqlite3_context*,int,sqlite3_value**); /* Aggregate step */
1.589 - void (*xFinalize)(sqlite3_context*); /* Aggregate finializer */
1.590 - char zName[1]; /* SQL name of the function. MUST BE LAST */
1.591 -};
1.592 -
1.593 -/*
1.594 -** Each SQLite module (virtual table definition) is defined by an
1.595 -** instance of the following structure, stored in the sqlite3.aModule
1.596 -** hash table.
1.597 -*/
1.598 -struct Module {
1.599 - const sqlite3_module *pModule; /* Callback pointers */
1.600 - const char *zName; /* Name passed to create_module() */
1.601 - void *pAux; /* pAux passed to create_module() */
1.602 - void (*xDestroy)(void *); /* Module destructor function */
1.603 -};
1.604 -
1.605 -/*
1.606 -** Possible values for FuncDef.flags
1.607 -*/
1.608 -#define SQLITE_FUNC_LIKE 0x01 /* Candidate for the LIKE optimization */
1.609 -#define SQLITE_FUNC_CASE 0x02 /* Case-sensitive LIKE-type function */
1.610 -#define SQLITE_FUNC_EPHEM 0x04 /* Ephermeral. Delete with VDBE */
1.611 -
1.612 -/*
1.613 -** information about each column of an SQL table is held in an instance
1.614 -** of this structure.
1.615 -*/
1.616 -struct Column {
1.617 - char *zName; /* Name of this column */
1.618 - Expr *pDflt; /* Default value of this column */
1.619 - char *zType; /* Data type for this column */
1.620 - char *zColl; /* Collating sequence. If NULL, use the default */
1.621 - u8 notNull; /* True if there is a NOT NULL constraint */
1.622 - u8 isPrimKey; /* True if this column is part of the PRIMARY KEY */
1.623 - char affinity; /* One of the SQLITE_AFF_... values */
1.624 -#ifndef SQLITE_OMIT_VIRTUALTABLE
1.625 - u8 isHidden; /* True if this column is 'hidden' */
1.626 -#endif
1.627 -};
1.628 -
1.629 -/*
1.630 -** A "Collating Sequence" is defined by an instance of the following
1.631 -** structure. Conceptually, a collating sequence consists of a name and
1.632 -** a comparison routine that defines the order of that sequence.
1.633 -**
1.634 -** There may two seperate implementations of the collation function, one
1.635 -** that processes text in UTF-8 encoding (CollSeq.xCmp) and another that
1.636 -** processes text encoded in UTF-16 (CollSeq.xCmp16), using the machine
1.637 -** native byte order. When a collation sequence is invoked, SQLite selects
1.638 -** the version that will require the least expensive encoding
1.639 -** translations, if any.
1.640 -**
1.641 -** The CollSeq.pUser member variable is an extra parameter that passed in
1.642 -** as the first argument to the UTF-8 comparison function, xCmp.
1.643 -** CollSeq.pUser16 is the equivalent for the UTF-16 comparison function,
1.644 -** xCmp16.
1.645 -**
1.646 -** If both CollSeq.xCmp and CollSeq.xCmp16 are NULL, it means that the
1.647 -** collating sequence is undefined. Indices built on an undefined
1.648 -** collating sequence may not be read or written.
1.649 -*/
1.650 -struct CollSeq {
1.651 - char *zName; /* Name of the collating sequence, UTF-8 encoded */
1.652 - u8 enc; /* Text encoding handled by xCmp() */
1.653 - u8 type; /* One of the SQLITE_COLL_... values below */
1.654 - void *pUser; /* First argument to xCmp() */
1.655 - int (*xCmp)(void*,int, const void*, int, const void*);
1.656 - void (*xDel)(void*); /* Destructor for pUser */
1.657 -};
1.658 -
1.659 -/*
1.660 -** Allowed values of CollSeq flags:
1.661 -*/
1.662 -#define SQLITE_COLL_BINARY 1 /* The default memcmp() collating sequence */
1.663 -#define SQLITE_COLL_NOCASE 2 /* The built-in NOCASE collating sequence */
1.664 -#define SQLITE_COLL_REVERSE 3 /* The built-in REVERSE collating sequence */
1.665 -#define SQLITE_COLL_USER 0 /* Any other user-defined collating sequence */
1.666 -
1.667 -/*
1.668 -** A sort order can be either ASC or DESC.
1.669 -*/
1.670 -#define SQLITE_SO_ASC 0 /* Sort in ascending order */
1.671 -#define SQLITE_SO_DESC 1 /* Sort in ascending order */
1.672 -
1.673 -/*
1.674 -** Column affinity types.
1.675 -**
1.676 -** These used to have mnemonic name like 'i' for SQLITE_AFF_INTEGER and
1.677 -** 't' for SQLITE_AFF_TEXT. But we can save a little space and improve
1.678 -** the speed a little by number the values consecutively.
1.679 -**
1.680 -** But rather than start with 0 or 1, we begin with 'a'. That way,
1.681 -** when multiple affinity types are concatenated into a string and
1.682 -** used as the P3 operand, they will be more readable.
1.683 -**
1.684 -** Note also that the numeric types are grouped together so that testing
1.685 -** for a numeric type is a single comparison.
1.686 -*/
1.687 -#define SQLITE_AFF_TEXT 'a'
1.688 -#define SQLITE_AFF_NONE 'b'
1.689 -#define SQLITE_AFF_NUMERIC 'c'
1.690 -#define SQLITE_AFF_INTEGER 'd'
1.691 -#define SQLITE_AFF_REAL 'e'
1.692 -
1.693 -#define sqlite3IsNumericAffinity(X) ((X)>=SQLITE_AFF_NUMERIC)
1.694 -
1.695 -/*
1.696 -** Each SQL table is represented in memory by an instance of the
1.697 -** following structure.
1.698 -**
1.699 -** Table.zName is the name of the table. The case of the original
1.700 -** CREATE TABLE statement is stored, but case is not significant for
1.701 -** comparisons.
1.702 -**
1.703 -** Table.nCol is the number of columns in this table. Table.aCol is a
1.704 -** pointer to an array of Column structures, one for each column.
1.705 -**
1.706 -** If the table has an INTEGER PRIMARY KEY, then Table.iPKey is the index of
1.707 -** the column that is that key. Otherwise Table.iPKey is negative. Note
1.708 -** that the datatype of the PRIMARY KEY must be INTEGER for this field to
1.709 -** be set. An INTEGER PRIMARY KEY is used as the rowid for each row of
1.710 -** the table. If a table has no INTEGER PRIMARY KEY, then a random rowid
1.711 -** is generated for each row of the table. Table.hasPrimKey is true if
1.712 -** the table has any PRIMARY KEY, INTEGER or otherwise.
1.713 -**
1.714 -** Table.tnum is the page number for the root BTree page of the table in the
1.715 -** database file. If Table.iDb is the index of the database table backend
1.716 -** in sqlite.aDb[]. 0 is for the main database and 1 is for the file that
1.717 -** holds temporary tables and indices. If Table.isEphem
1.718 -** is true, then the table is stored in a file that is automatically deleted
1.719 -** when the VDBE cursor to the table is closed. In this case Table.tnum
1.720 -** refers VDBE cursor number that holds the table open, not to the root
1.721 -** page number. Transient tables are used to hold the results of a
1.722 -** sub-query that appears instead of a real table name in the FROM clause
1.723 -** of a SELECT statement.
1.724 -*/
1.725 -struct Table {
1.726 - char *zName; /* Name of the table */
1.727 - int nCol; /* Number of columns in this table */
1.728 - Column *aCol; /* Information about each column */
1.729 - int iPKey; /* If not less then 0, use aCol[iPKey] as the primary key */
1.730 - Index *pIndex; /* List of SQL indexes on this table. */
1.731 - int tnum; /* Root BTree node for this table (see note above) */
1.732 - Select *pSelect; /* NULL for tables. Points to definition if a view. */
1.733 - int nRef; /* Number of pointers to this Table */
1.734 - Trigger *pTrigger; /* List of SQL triggers on this table */
1.735 - FKey *pFKey; /* Linked list of all foreign keys in this table */
1.736 - char *zColAff; /* String defining the affinity of each column */
1.737 -#ifndef SQLITE_OMIT_CHECK
1.738 - Expr *pCheck; /* The AND of all CHECK constraints */
1.739 -#endif
1.740 -#ifndef SQLITE_OMIT_ALTERTABLE
1.741 - int addColOffset; /* Offset in CREATE TABLE statement to add a new column */
1.742 -#endif
1.743 - u8 readOnly; /* True if this table should not be written by the user */
1.744 - u8 isEphem; /* True if created using OP_OpenEphermeral */
1.745 - u8 hasPrimKey; /* True if there exists a primary key */
1.746 - u8 keyConf; /* What to do in case of uniqueness conflict on iPKey */
1.747 - u8 autoInc; /* True if the integer primary key is autoincrement */
1.748 -#ifndef SQLITE_OMIT_VIRTUALTABLE
1.749 - u8 isVirtual; /* True if this is a virtual table */
1.750 - u8 isCommit; /* True once the CREATE TABLE has been committed */
1.751 - Module *pMod; /* Pointer to the implementation of the module */
1.752 - sqlite3_vtab *pVtab; /* Pointer to the module instance */
1.753 - int nModuleArg; /* Number of arguments to the module */
1.754 - char **azModuleArg; /* Text of all module args. [0] is module name */
1.755 -#endif
1.756 - Schema *pSchema; /* Schema that contains this table */
1.757 -};
1.758 -
1.759 -/*
1.760 -** Test to see whether or not a table is a virtual table. This is
1.761 -** done as a macro so that it will be optimized out when virtual
1.762 -** table support is omitted from the build.
1.763 -*/
1.764 -#ifndef SQLITE_OMIT_VIRTUALTABLE
1.765 -# define IsVirtual(X) ((X)->isVirtual)
1.766 -# define IsHiddenColumn(X) ((X)->isHidden)
1.767 -#else
1.768 -# define IsVirtual(X) 0
1.769 -# define IsHiddenColumn(X) 0
1.770 -#endif
1.771 -
1.772 -/*
1.773 -** Each foreign key constraint is an instance of the following structure.
1.774 -**
1.775 -** A foreign key is associated with two tables. The "from" table is
1.776 -** the table that contains the REFERENCES clause that creates the foreign
1.777 -** key. The "to" table is the table that is named in the REFERENCES clause.
1.778 -** Consider this example:
1.779 -**
1.780 -** CREATE TABLE ex1(
1.781 -** a INTEGER PRIMARY KEY,
1.782 -** b INTEGER CONSTRAINT fk1 REFERENCES ex2(x)
1.783 -** );
1.784 -**
1.785 -** For foreign key "fk1", the from-table is "ex1" and the to-table is "ex2".
1.786 -**
1.787 -** Each REFERENCES clause generates an instance of the following structure
1.788 -** which is attached to the from-table. The to-table need not exist when
1.789 -** the from-table is created. The existance of the to-table is not checked
1.790 -** until an attempt is made to insert data into the from-table.
1.791 -**
1.792 -** The sqlite.aFKey hash table stores pointers to this structure
1.793 -** given the name of a to-table. For each to-table, all foreign keys
1.794 -** associated with that table are on a linked list using the FKey.pNextTo
1.795 -** field.
1.796 -*/
1.797 -struct FKey {
1.798 - Table *pFrom; /* The table that constains the REFERENCES clause */
1.799 - FKey *pNextFrom; /* Next foreign key in pFrom */
1.800 - char *zTo; /* Name of table that the key points to */
1.801 - FKey *pNextTo; /* Next foreign key that points to zTo */
1.802 - int nCol; /* Number of columns in this key */
1.803 - struct sColMap { /* Mapping of columns in pFrom to columns in zTo */
1.804 - int iFrom; /* Index of column in pFrom */
1.805 - char *zCol; /* Name of column in zTo. If 0 use PRIMARY KEY */
1.806 - } *aCol; /* One entry for each of nCol column s */
1.807 - u8 isDeferred; /* True if constraint checking is deferred till COMMIT */
1.808 - u8 updateConf; /* How to resolve conflicts that occur on UPDATE */
1.809 - u8 deleteConf; /* How to resolve conflicts that occur on DELETE */
1.810 - u8 insertConf; /* How to resolve conflicts that occur on INSERT */
1.811 -};
1.812 -
1.813 -/*
1.814 -** SQLite supports many different ways to resolve a constraint
1.815 -** error. ROLLBACK processing means that a constraint violation
1.816 -** causes the operation in process to fail and for the current transaction
1.817 -** to be rolled back. ABORT processing means the operation in process
1.818 -** fails and any prior changes from that one operation are backed out,
1.819 -** but the transaction is not rolled back. FAIL processing means that
1.820 -** the operation in progress stops and returns an error code. But prior
1.821 -** changes due to the same operation are not backed out and no rollback
1.822 -** occurs. IGNORE means that the particular row that caused the constraint
1.823 -** error is not inserted or updated. Processing continues and no error
1.824 -** is returned. REPLACE means that preexisting database rows that caused
1.825 -** a UNIQUE constraint violation are removed so that the new insert or
1.826 -** update can proceed. Processing continues and no error is reported.
1.827 -**
1.828 -** RESTRICT, SETNULL, and CASCADE actions apply only to foreign keys.
1.829 -** RESTRICT is the same as ABORT for IMMEDIATE foreign keys and the
1.830 -** same as ROLLBACK for DEFERRED keys. SETNULL means that the foreign
1.831 -** key is set to NULL. CASCADE means that a DELETE or UPDATE of the
1.832 -** referenced table row is propagated into the row that holds the
1.833 -** foreign key.
1.834 -**
1.835 -** The following symbolic values are used to record which type
1.836 -** of action to take.
1.837 -*/
1.838 -#define OE_None 0 /* There is no constraint to check */
1.839 -#define OE_Rollback 1 /* Fail the operation and rollback the transaction */
1.840 -#define OE_Abort 2 /* Back out changes but do no rollback transaction */
1.841 -#define OE_Fail 3 /* Stop the operation but leave all prior changes */
1.842 -#define OE_Ignore 4 /* Ignore the error. Do not do the INSERT or UPDATE */
1.843 -#define OE_Replace 5 /* Delete existing record, then do INSERT or UPDATE */
1.844 -
1.845 -#define OE_Restrict 6 /* OE_Abort for IMMEDIATE, OE_Rollback for DEFERRED */
1.846 -#define OE_SetNull 7 /* Set the foreign key value to NULL */
1.847 -#define OE_SetDflt 8 /* Set the foreign key value to its default */
1.848 -#define OE_Cascade 9 /* Cascade the changes */
1.849 -
1.850 -#define OE_Default 99 /* Do whatever the default action is */
1.851 -
1.852 -
1.853 -/*
1.854 -** An instance of the following structure is passed as the first
1.855 -** argument to sqlite3VdbeKeyCompare and is used to control the
1.856 -** comparison of the two index keys.
1.857 -**
1.858 -** If the KeyInfo.incrKey value is true and the comparison would
1.859 -** otherwise be equal, then return a result as if the second key
1.860 -** were larger.
1.861 -*/
1.862 -struct KeyInfo {
1.863 - sqlite3 *db; /* The database connection */
1.864 - u8 enc; /* Text encoding - one of the TEXT_Utf* values */
1.865 - u8 incrKey; /* Increase 2nd key by epsilon before comparison */
1.866 - int nField; /* Number of entries in aColl[] */
1.867 - u8 *aSortOrder; /* If defined an aSortOrder[i] is true, sort DESC */
1.868 - CollSeq *aColl[1]; /* Collating sequence for each term of the key */
1.869 -};
1.870 -
1.871 -/*
1.872 -** Each SQL index is represented in memory by an
1.873 -** instance of the following structure.
1.874 -**
1.875 -** The columns of the table that are to be indexed are described
1.876 -** by the aiColumn[] field of this structure. For example, suppose
1.877 -** we have the following table and index:
1.878 -**
1.879 -** CREATE TABLE Ex1(c1 int, c2 int, c3 text);
1.880 -** CREATE INDEX Ex2 ON Ex1(c3,c1);
1.881 -**
1.882 -** In the Table structure describing Ex1, nCol==3 because there are
1.883 -** three columns in the table. In the Index structure describing
1.884 -** Ex2, nColumn==2 since 2 of the 3 columns of Ex1 are indexed.
1.885 -** The value of aiColumn is {2, 0}. aiColumn[0]==2 because the
1.886 -** first column to be indexed (c3) has an index of 2 in Ex1.aCol[].
1.887 -** The second column to be indexed (c1) has an index of 0 in
1.888 -** Ex1.aCol[], hence Ex2.aiColumn[1]==0.
1.889 -**
1.890 -** The Index.onError field determines whether or not the indexed columns
1.891 -** must be unique and what to do if they are not. When Index.onError=OE_None,
1.892 -** it means this is not a unique index. Otherwise it is a unique index
1.893 -** and the value of Index.onError indicate the which conflict resolution
1.894 -** algorithm to employ whenever an attempt is made to insert a non-unique
1.895 -** element.
1.896 -*/
1.897 -struct Index {
1.898 - char *zName; /* Name of this index */
1.899 - int nColumn; /* Number of columns in the table used by this index */
1.900 - int *aiColumn; /* Which columns are used by this index. 1st is 0 */
1.901 - unsigned *aiRowEst; /* Result of ANALYZE: Est. rows selected by each column */
1.902 - Table *pTable; /* The SQL table being indexed */
1.903 - int tnum; /* Page containing root of this index in database file */
1.904 - u8 onError; /* OE_Abort, OE_Ignore, OE_Replace, or OE_None */
1.905 - u8 autoIndex; /* True if is automatically created (ex: by UNIQUE) */
1.906 - char *zColAff; /* String defining the affinity of each column */
1.907 - Index *pNext; /* The next index associated with the same table */
1.908 - Schema *pSchema; /* Schema containing this index */
1.909 - u8 *aSortOrder; /* Array of size Index.nColumn. True==DESC, False==ASC */
1.910 - char **azColl; /* Array of collation sequence names for index */
1.911 -};
1.912 -
1.913 -/*
1.914 -** Each token coming out of the lexer is an instance of
1.915 -** this structure. Tokens are also used as part of an expression.
1.916 -**
1.917 -** Note if Token.z==0 then Token.dyn and Token.n are undefined and
1.918 -** may contain random values. Do not make any assuptions about Token.dyn
1.919 -** and Token.n when Token.z==0.
1.920 -*/
1.921 -struct Token {
1.922 - const unsigned char *z; /* Text of the token. Not NULL-terminated! */
1.923 - unsigned dyn : 1; /* True for malloced memory, false for static */
1.924 - unsigned n : 31; /* Number of characters in this token */
1.925 -};
1.926 -
1.927 -/*
1.928 -** An instance of this structure contains information needed to generate
1.929 -** code for a SELECT that contains aggregate functions.
1.930 -**
1.931 -** If Expr.op==TK_AGG_COLUMN or TK_AGG_FUNCTION then Expr.pAggInfo is a
1.932 -** pointer to this structure. The Expr.iColumn field is the index in
1.933 -** AggInfo.aCol[] or AggInfo.aFunc[] of information needed to generate
1.934 -** code for that node.
1.935 -**
1.936 -** AggInfo.pGroupBy and AggInfo.aFunc.pExpr point to fields within the
1.937 -** original Select structure that describes the SELECT statement. These
1.938 -** fields do not need to be freed when deallocating the AggInfo structure.
1.939 -*/
1.940 -struct AggInfo {
1.941 - u8 directMode; /* Direct rendering mode means take data directly
1.942 - ** from source tables rather than from accumulators */
1.943 - u8 useSortingIdx; /* In direct mode, reference the sorting index rather
1.944 - ** than the source table */
1.945 - int sortingIdx; /* Cursor number of the sorting index */
1.946 - ExprList *pGroupBy; /* The group by clause */
1.947 - int nSortingColumn; /* Number of columns in the sorting index */
1.948 - struct AggInfo_col { /* For each column used in source tables */
1.949 - Table *pTab; /* Source table */
1.950 - int iTable; /* Cursor number of the source table */
1.951 - int iColumn; /* Column number within the source table */
1.952 - int iSorterColumn; /* Column number in the sorting index */
1.953 - int iMem; /* Memory location that acts as accumulator */
1.954 - Expr *pExpr; /* The original expression */
1.955 - } *aCol;
1.956 - int nColumn; /* Number of used entries in aCol[] */
1.957 - int nColumnAlloc; /* Number of slots allocated for aCol[] */
1.958 - int nAccumulator; /* Number of columns that show through to the output.
1.959 - ** Additional columns are used only as parameters to
1.960 - ** aggregate functions */
1.961 - struct AggInfo_func { /* For each aggregate function */
1.962 - Expr *pExpr; /* Expression encoding the function */
1.963 - FuncDef *pFunc; /* The aggregate function implementation */
1.964 - int iMem; /* Memory location that acts as accumulator */
1.965 - int iDistinct; /* Ephermeral table used to enforce DISTINCT */
1.966 - } *aFunc;
1.967 - int nFunc; /* Number of entries in aFunc[] */
1.968 - int nFuncAlloc; /* Number of slots allocated for aFunc[] */
1.969 -};
1.970 -
1.971 -/*
1.972 -** Each node of an expression in the parse tree is an instance
1.973 -** of this structure.
1.974 -**
1.975 -** Expr.op is the opcode. The integer parser token codes are reused
1.976 -** as opcodes here. For example, the parser defines TK_GE to be an integer
1.977 -** code representing the ">=" operator. This same integer code is reused
1.978 -** to represent the greater-than-or-equal-to operator in the expression
1.979 -** tree.
1.980 -**
1.981 -** Expr.pRight and Expr.pLeft are subexpressions. Expr.pList is a list
1.982 -** of argument if the expression is a function.
1.983 -**
1.984 -** Expr.token is the operator token for this node. For some expressions
1.985 -** that have subexpressions, Expr.token can be the complete text that gave
1.986 -** rise to the Expr. In the latter case, the token is marked as being
1.987 -** a compound token.
1.988 -**
1.989 -** An expression of the form ID or ID.ID refers to a column in a table.
1.990 -** For such expressions, Expr.op is set to TK_COLUMN and Expr.iTable is
1.991 -** the integer cursor number of a VDBE cursor pointing to that table and
1.992 -** Expr.iColumn is the column number for the specific column. If the
1.993 -** expression is used as a result in an aggregate SELECT, then the
1.994 -** value is also stored in the Expr.iAgg column in the aggregate so that
1.995 -** it can be accessed after all aggregates are computed.
1.996 -**
1.997 -** If the expression is a function, the Expr.iTable is an integer code
1.998 -** representing which function. If the expression is an unbound variable
1.999 -** marker (a question mark character '?' in the original SQL) then the
1.1000 -** Expr.iTable holds the index number for that variable.
1.1001 -**
1.1002 -** If the expression is a subquery then Expr.iColumn holds an integer
1.1003 -** register number containing the result of the subquery. If the
1.1004 -** subquery gives a constant result, then iTable is -1. If the subquery
1.1005 -** gives a different answer at different times during statement processing
1.1006 -** then iTable is the address of a subroutine that computes the subquery.
1.1007 -**
1.1008 -** The Expr.pSelect field points to a SELECT statement. The SELECT might
1.1009 -** be the right operand of an IN operator. Or, if a scalar SELECT appears
1.1010 -** in an expression the opcode is TK_SELECT and Expr.pSelect is the only
1.1011 -** operand.
1.1012 -**
1.1013 -** If the Expr is of type OP_Column, and the table it is selecting from
1.1014 -** is a disk table or the "old.*" pseudo-table, then pTab points to the
1.1015 -** corresponding table definition.
1.1016 -*/
1.1017 -struct Expr {
1.1018 - u8 op; /* Operation performed by this node */
1.1019 - char affinity; /* The affinity of the column or 0 if not a column */
1.1020 - u16 flags; /* Various flags. See below */
1.1021 - CollSeq *pColl; /* The collation type of the column or 0 */
1.1022 - Expr *pLeft, *pRight; /* Left and right subnodes */
1.1023 - ExprList *pList; /* A list of expressions used as function arguments
1.1024 - ** or in "<expr> IN (<expr-list)" */
1.1025 - Token token; /* An operand token */
1.1026 - Token span; /* Complete text of the expression */
1.1027 - int iTable, iColumn; /* When op==TK_COLUMN, then this expr node means the
1.1028 - ** iColumn-th field of the iTable-th table. */
1.1029 - AggInfo *pAggInfo; /* Used by TK_AGG_COLUMN and TK_AGG_FUNCTION */
1.1030 - int iAgg; /* Which entry in pAggInfo->aCol[] or ->aFunc[] */
1.1031 - int iRightJoinTable; /* If EP_FromJoin, the right table of the join */
1.1032 - Select *pSelect; /* When the expression is a sub-select. Also the
1.1033 - ** right side of "<expr> IN (<select>)" */
1.1034 - Table *pTab; /* Table for OP_Column expressions. */
1.1035 -/* Schema *pSchema; */
1.1036 -#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
1.1037 - int nHeight; /* Height of the tree headed by this node */
1.1038 -#endif
1.1039 -};
1.1040 -
1.1041 -/*
1.1042 -** The following are the meanings of bits in the Expr.flags field.
1.1043 -*/
1.1044 -#define EP_FromJoin 0x01 /* Originated in ON or USING clause of a join */
1.1045 -#define EP_Agg 0x02 /* Contains one or more aggregate functions */
1.1046 -#define EP_Resolved 0x04 /* IDs have been resolved to COLUMNs */
1.1047 -#define EP_Error 0x08 /* Expression contains one or more errors */
1.1048 -#define EP_Distinct 0x10 /* Aggregate function with DISTINCT keyword */
1.1049 -#define EP_VarSelect 0x20 /* pSelect is correlated, not constant */
1.1050 -#define EP_Dequoted 0x40 /* True if the string has been dequoted */
1.1051 -#define EP_InfixFunc 0x80 /* True for an infix function: LIKE, GLOB, etc */
1.1052 -#define EP_ExpCollate 0x100 /* Collating sequence specified explicitly */
1.1053 -
1.1054 -/*
1.1055 -** These macros can be used to test, set, or clear bits in the
1.1056 -** Expr.flags field.
1.1057 -*/
1.1058 -#define ExprHasProperty(E,P) (((E)->flags&(P))==(P))
1.1059 -#define ExprHasAnyProperty(E,P) (((E)->flags&(P))!=0)
1.1060 -#define ExprSetProperty(E,P) (E)->flags|=(P)
1.1061 -#define ExprClearProperty(E,P) (E)->flags&=~(P)
1.1062 -
1.1063 -/*
1.1064 -** A list of expressions. Each expression may optionally have a
1.1065 -** name. An expr/name combination can be used in several ways, such
1.1066 -** as the list of "expr AS ID" fields following a "SELECT" or in the
1.1067 -** list of "ID = expr" items in an UPDATE. A list of expressions can
1.1068 -** also be used as the argument to a function, in which case the a.zName
1.1069 -** field is not used.
1.1070 -*/
1.1071 -struct ExprList {
1.1072 - int nExpr; /* Number of expressions on the list */
1.1073 - int nAlloc; /* Number of entries allocated below */
1.1074 - int iECursor; /* VDBE Cursor associated with this ExprList */
1.1075 - struct ExprList_item {
1.1076 - Expr *pExpr; /* The list of expressions */
1.1077 - char *zName; /* Token associated with this expression */
1.1078 - u8 sortOrder; /* 1 for DESC or 0 for ASC */
1.1079 - u8 isAgg; /* True if this is an aggregate like count(*) */
1.1080 - u8 done; /* A flag to indicate when processing is finished */
1.1081 - } *a; /* One entry for each expression */
1.1082 -};
1.1083 -
1.1084 -/*
1.1085 -** An instance of this structure can hold a simple list of identifiers,
1.1086 -** such as the list "a,b,c" in the following statements:
1.1087 -**
1.1088 -** INSERT INTO t(a,b,c) VALUES ...;
1.1089 -** CREATE INDEX idx ON t(a,b,c);
1.1090 -** CREATE TRIGGER trig BEFORE UPDATE ON t(a,b,c) ...;
1.1091 -**
1.1092 -** The IdList.a.idx field is used when the IdList represents the list of
1.1093 -** column names after a table name in an INSERT statement. In the statement
1.1094 -**
1.1095 -** INSERT INTO t(a,b,c) ...
1.1096 -**
1.1097 -** If "a" is the k-th column of table "t", then IdList.a[0].idx==k.
1.1098 -*/
1.1099 -struct IdList {
1.1100 - struct IdList_item {
1.1101 - char *zName; /* Name of the identifier */
1.1102 - int idx; /* Index in some Table.aCol[] of a column named zName */
1.1103 - } *a;
1.1104 - int nId; /* Number of identifiers on the list */
1.1105 - int nAlloc; /* Number of entries allocated for a[] below */
1.1106 -};
1.1107 -
1.1108 -/*
1.1109 -** The bitmask datatype defined below is used for various optimizations.
1.1110 -**
1.1111 -** Changing this from a 64-bit to a 32-bit type limits the number of
1.1112 -** tables in a join to 32 instead of 64. But it also reduces the size
1.1113 -** of the library by 738 bytes on ix86.
1.1114 -*/
1.1115 -typedef u64 Bitmask;
1.1116 -
1.1117 -/*
1.1118 -** The following structure describes the FROM clause of a SELECT statement.
1.1119 -** Each table or subquery in the FROM clause is a separate element of
1.1120 -** the SrcList.a[] array.
1.1121 -**
1.1122 -** With the addition of multiple database support, the following structure
1.1123 -** can also be used to describe a particular table such as the table that
1.1124 -** is modified by an INSERT, DELETE, or UPDATE statement. In standard SQL,
1.1125 -** such a table must be a simple name: ID. But in SQLite, the table can
1.1126 -** now be identified by a database name, a dot, then the table name: ID.ID.
1.1127 -**
1.1128 -** The jointype starts out showing the join type between the current table
1.1129 -** and the next table on the list. The parser builds the list this way.
1.1130 -** But sqlite3SrcListShiftJoinType() later shifts the jointypes so that each
1.1131 -** jointype expresses the join between the table and the previous table.
1.1132 -*/
1.1133 -struct SrcList {
1.1134 - i16 nSrc; /* Number of tables or subqueries in the FROM clause */
1.1135 - i16 nAlloc; /* Number of entries allocated in a[] below */
1.1136 - struct SrcList_item {
1.1137 - char *zDatabase; /* Name of database holding this table */
1.1138 - char *zName; /* Name of the table */
1.1139 - char *zAlias; /* The "B" part of a "A AS B" phrase. zName is the "A" */
1.1140 - Table *pTab; /* An SQL table corresponding to zName */
1.1141 - Select *pSelect; /* A SELECT statement used in place of a table name */
1.1142 - u8 isPopulated; /* Temporary table associated with SELECT is populated */
1.1143 - u8 jointype; /* Type of join between this able and the previous */
1.1144 - int iCursor; /* The VDBE cursor number used to access this table */
1.1145 - Expr *pOn; /* The ON clause of a join */
1.1146 - IdList *pUsing; /* The USING clause of a join */
1.1147 - Bitmask colUsed; /* Bit N (1<<N) set if column N or pTab is used */
1.1148 - } a[1]; /* One entry for each identifier on the list */
1.1149 -};
1.1150 -
1.1151 -/*
1.1152 -** Permitted values of the SrcList.a.jointype field
1.1153 -*/
1.1154 -#define JT_INNER 0x0001 /* Any kind of inner or cross join */
1.1155 -#define JT_CROSS 0x0002 /* Explicit use of the CROSS keyword */
1.1156 -#define JT_NATURAL 0x0004 /* True for a "natural" join */
1.1157 -#define JT_LEFT 0x0008 /* Left outer join */
1.1158 -#define JT_RIGHT 0x0010 /* Right outer join */
1.1159 -#define JT_OUTER 0x0020 /* The "OUTER" keyword is present */
1.1160 -#define JT_ERROR 0x0040 /* unknown or unsupported join type */
1.1161 -
1.1162 -/*
1.1163 -** For each nested loop in a WHERE clause implementation, the WhereInfo
1.1164 -** structure contains a single instance of this structure. This structure
1.1165 -** is intended to be private the the where.c module and should not be
1.1166 -** access or modified by other modules.
1.1167 -**
1.1168 -** The pIdxInfo and pBestIdx fields are used to help pick the best
1.1169 -** index on a virtual table. The pIdxInfo pointer contains indexing
1.1170 -** information for the i-th table in the FROM clause before reordering.
1.1171 -** All the pIdxInfo pointers are freed by whereInfoFree() in where.c.
1.1172 -** The pBestIdx pointer is a copy of pIdxInfo for the i-th table after
1.1173 -** FROM clause ordering. This is a little confusing so I will repeat
1.1174 -** it in different words. WhereInfo.a[i].pIdxInfo is index information
1.1175 -** for WhereInfo.pTabList.a[i]. WhereInfo.a[i].pBestInfo is the
1.1176 -** index information for the i-th loop of the join. pBestInfo is always
1.1177 -** either NULL or a copy of some pIdxInfo. So for cleanup it is
1.1178 -** sufficient to free all of the pIdxInfo pointers.
1.1179 -**
1.1180 -*/
1.1181 -struct WhereLevel {
1.1182 - int iFrom; /* Which entry in the FROM clause */
1.1183 - int flags; /* Flags associated with this level */
1.1184 - int iMem; /* First memory cell used by this level */
1.1185 - int iLeftJoin; /* Memory cell used to implement LEFT OUTER JOIN */
1.1186 - Index *pIdx; /* Index used. NULL if no index */
1.1187 - int iTabCur; /* The VDBE cursor used to access the table */
1.1188 - int iIdxCur; /* The VDBE cursor used to acesss pIdx */
1.1189 - int brk; /* Jump here to break out of the loop */
1.1190 - int nxt; /* Jump here to start the next IN combination */
1.1191 - int cont; /* Jump here to continue with the next loop cycle */
1.1192 - int top; /* First instruction of interior of the loop */
1.1193 - int op, p1, p2; /* Opcode used to terminate the loop */
1.1194 - int nEq; /* Number of == or IN constraints on this loop */
1.1195 - int nIn; /* Number of IN operators constraining this loop */
1.1196 - struct InLoop {
1.1197 - int iCur; /* The VDBE cursor used by this IN operator */
1.1198 - int topAddr; /* Top of the IN loop */
1.1199 - } *aInLoop; /* Information about each nested IN operator */
1.1200 - sqlite3_index_info *pBestIdx; /* Index information for this level */
1.1201 -
1.1202 - /* The following field is really not part of the current level. But
1.1203 - ** we need a place to cache index information for each table in the
1.1204 - ** FROM clause and the WhereLevel structure is a convenient place.
1.1205 - */
1.1206 - sqlite3_index_info *pIdxInfo; /* Index info for n-th source table */
1.1207 -};
1.1208 -
1.1209 -/*
1.1210 -** The WHERE clause processing routine has two halves. The
1.1211 -** first part does the start of the WHERE loop and the second
1.1212 -** half does the tail of the WHERE loop. An instance of
1.1213 -** this structure is returned by the first half and passed
1.1214 -** into the second half to give some continuity.
1.1215 -*/
1.1216 -struct WhereInfo {
1.1217 - Parse *pParse;
1.1218 - SrcList *pTabList; /* List of tables in the join */
1.1219 - int iTop; /* The very beginning of the WHERE loop */
1.1220 - int iContinue; /* Jump here to continue with next record */
1.1221 - int iBreak; /* Jump here to break out of the loop */
1.1222 - int nLevel; /* Number of nested loop */
1.1223 - sqlite3_index_info **apInfo; /* Array of pointers to index info structures */
1.1224 - WhereLevel a[1]; /* Information about each nest loop in the WHERE */
1.1225 -};
1.1226 -
1.1227 -/*
1.1228 -** A NameContext defines a context in which to resolve table and column
1.1229 -** names. The context consists of a list of tables (the pSrcList) field and
1.1230 -** a list of named expression (pEList). The named expression list may
1.1231 -** be NULL. The pSrc corresponds to the FROM clause of a SELECT or
1.1232 -** to the table being operated on by INSERT, UPDATE, or DELETE. The
1.1233 -** pEList corresponds to the result set of a SELECT and is NULL for
1.1234 -** other statements.
1.1235 -**
1.1236 -** NameContexts can be nested. When resolving names, the inner-most
1.1237 -** context is searched first. If no match is found, the next outer
1.1238 -** context is checked. If there is still no match, the next context
1.1239 -** is checked. This process continues until either a match is found
1.1240 -** or all contexts are check. When a match is found, the nRef member of
1.1241 -** the context containing the match is incremented.
1.1242 -**
1.1243 -** Each subquery gets a new NameContext. The pNext field points to the
1.1244 -** NameContext in the parent query. Thus the process of scanning the
1.1245 -** NameContext list corresponds to searching through successively outer
1.1246 -** subqueries looking for a match.
1.1247 -*/
1.1248 -struct NameContext {
1.1249 - Parse *pParse; /* The parser */
1.1250 - SrcList *pSrcList; /* One or more tables used to resolve names */
1.1251 - ExprList *pEList; /* Optional list of named expressions */
1.1252 - int nRef; /* Number of names resolved by this context */
1.1253 - int nErr; /* Number of errors encountered while resolving names */
1.1254 - u8 allowAgg; /* Aggregate functions allowed here */
1.1255 - u8 hasAgg; /* True if aggregates are seen */
1.1256 - u8 isCheck; /* True if resolving names in a CHECK constraint */
1.1257 - int nDepth; /* Depth of subquery recursion. 1 for no recursion */
1.1258 - AggInfo *pAggInfo; /* Information about aggregates at this level */
1.1259 - NameContext *pNext; /* Next outer name context. NULL for outermost */
1.1260 -};
1.1261 -
1.1262 -/*
1.1263 -** An instance of the following structure contains all information
1.1264 -** needed to generate code for a single SELECT statement.
1.1265 -**
1.1266 -** nLimit is set to -1 if there is no LIMIT clause. nOffset is set to 0.
1.1267 -** If there is a LIMIT clause, the parser sets nLimit to the value of the
1.1268 -** limit and nOffset to the value of the offset (or 0 if there is not
1.1269 -** offset). But later on, nLimit and nOffset become the memory locations
1.1270 -** in the VDBE that record the limit and offset counters.
1.1271 -**
1.1272 -** addrOpenEphm[] entries contain the address of OP_OpenEphemeral opcodes.
1.1273 -** These addresses must be stored so that we can go back and fill in
1.1274 -** the P3_KEYINFO and P2 parameters later. Neither the KeyInfo nor
1.1275 -** the number of columns in P2 can be computed at the same time
1.1276 -** as the OP_OpenEphm instruction is coded because not
1.1277 -** enough information about the compound query is known at that point.
1.1278 -** The KeyInfo for addrOpenTran[0] and [1] contains collating sequences
1.1279 -** for the result set. The KeyInfo for addrOpenTran[2] contains collating
1.1280 -** sequences for the ORDER BY clause.
1.1281 -*/
1.1282 -struct Select {
1.1283 - ExprList *pEList; /* The fields of the result */
1.1284 - u8 op; /* One of: TK_UNION TK_ALL TK_INTERSECT TK_EXCEPT */
1.1285 - u8 isDistinct; /* True if the DISTINCT keyword is present */
1.1286 - u8 isResolved; /* True once sqlite3SelectResolve() has run. */
1.1287 - u8 isAgg; /* True if this is an aggregate query */
1.1288 - u8 usesEphm; /* True if uses an OpenEphemeral opcode */
1.1289 - u8 disallowOrderBy; /* Do not allow an ORDER BY to be attached if TRUE */
1.1290 - char affinity; /* MakeRecord with this affinity for SRT_Set */
1.1291 - SrcList *pSrc; /* The FROM clause */
1.1292 - Expr *pWhere; /* The WHERE clause */
1.1293 - ExprList *pGroupBy; /* The GROUP BY clause */
1.1294 - Expr *pHaving; /* The HAVING clause */
1.1295 - ExprList *pOrderBy; /* The ORDER BY clause */
1.1296 - Select *pPrior; /* Prior select in a compound select statement */
1.1297 - Select *pRightmost; /* Right-most select in a compound select statement */
1.1298 - Expr *pLimit; /* LIMIT expression. NULL means not used. */
1.1299 - Expr *pOffset; /* OFFSET expression. NULL means not used. */
1.1300 - int iLimit, iOffset; /* Memory registers holding LIMIT & OFFSET counters */
1.1301 - int addrOpenEphm[3]; /* OP_OpenEphem opcodes related to this select */
1.1302 -};
1.1303 -
1.1304 -/*
1.1305 -** The results of a select can be distributed in several ways.
1.1306 -*/
1.1307 -#define SRT_Union 1 /* Store result as keys in an index */
1.1308 -#define SRT_Except 2 /* Remove result from a UNION index */
1.1309 -#define SRT_Discard 3 /* Do not save the results anywhere */
1.1310 -
1.1311 -/* The ORDER BY clause is ignored for all of the above */
1.1312 -#define IgnorableOrderby(X) (X<=SRT_Discard)
1.1313 -
1.1314 -#define SRT_Callback 4 /* Invoke a callback with each row of result */
1.1315 -#define SRT_Mem 5 /* Store result in a memory cell */
1.1316 -#define SRT_Set 6 /* Store non-null results as keys in an index */
1.1317 -#define SRT_Table 7 /* Store result as data with an automatic rowid */
1.1318 -#define SRT_EphemTab 8 /* Create transient tab and store like SRT_Table */
1.1319 -#define SRT_Subroutine 9 /* Call a subroutine to handle results */
1.1320 -#define SRT_Exists 10 /* Store 1 if the result is not empty */
1.1321 -
1.1322 -/*
1.1323 -** An SQL parser context. A copy of this structure is passed through
1.1324 -** the parser and down into all the parser action routine in order to
1.1325 -** carry around information that is global to the entire parse.
1.1326 -**
1.1327 -** The structure is divided into two parts. When the parser and code
1.1328 -** generate call themselves recursively, the first part of the structure
1.1329 -** is constant but the second part is reset at the beginning and end of
1.1330 -** each recursion.
1.1331 -**
1.1332 -** The nTableLock and aTableLock variables are only used if the shared-cache
1.1333 -** feature is enabled (if sqlite3Tsd()->useSharedData is true). They are
1.1334 -** used to store the set of table-locks required by the statement being
1.1335 -** compiled. Function sqlite3TableLock() is used to add entries to the
1.1336 -** list.
1.1337 -*/
1.1338 -struct Parse {
1.1339 - sqlite3 *db; /* The main database structure */
1.1340 - int rc; /* Return code from execution */
1.1341 - char *zErrMsg; /* An error message */
1.1342 - Vdbe *pVdbe; /* An engine for executing database bytecode */
1.1343 - u8 colNamesSet; /* TRUE after OP_ColumnName has been issued to pVdbe */
1.1344 - u8 nameClash; /* A permanent table name clashes with temp table name */
1.1345 - u8 checkSchema; /* Causes schema cookie check after an error */
1.1346 - u8 nested; /* Number of nested calls to the parser/code generator */
1.1347 - u8 parseError; /* True after a parsing error. Ticket #1794 */
1.1348 - int nErr; /* Number of errors seen */
1.1349 - int nTab; /* Number of previously allocated VDBE cursors */
1.1350 - int nMem; /* Number of memory cells used so far */
1.1351 - int nSet; /* Number of sets used so far */
1.1352 - int ckOffset; /* Stack offset to data used by CHECK constraints */
1.1353 - u32 writeMask; /* Start a write transaction on these databases */
1.1354 - u32 cookieMask; /* Bitmask of schema verified databases */
1.1355 - int cookieGoto; /* Address of OP_Goto to cookie verifier subroutine */
1.1356 - int cookieValue[SQLITE_MAX_ATTACHED+2]; /* Values of cookies to verify */
1.1357 -#ifndef SQLITE_OMIT_SHARED_CACHE
1.1358 - int nTableLock; /* Number of locks in aTableLock */
1.1359 - TableLock *aTableLock; /* Required table locks for shared-cache mode */
1.1360 -#endif
1.1361 -
1.1362 - /* Above is constant between recursions. Below is reset before and after
1.1363 - ** each recursion */
1.1364 -
1.1365 - int nVar; /* Number of '?' variables seen in the SQL so far */
1.1366 - int nVarExpr; /* Number of used slots in apVarExpr[] */
1.1367 - int nVarExprAlloc; /* Number of allocated slots in apVarExpr[] */
1.1368 - Expr **apVarExpr; /* Pointers to :aaa and $aaaa wildcard expressions */
1.1369 - u8 explain; /* True if the EXPLAIN flag is found on the query */
1.1370 - Token sErrToken; /* The token at which the error occurred */
1.1371 - Token sNameToken; /* Token with unqualified schema object name */
1.1372 - Token sLastToken; /* The last token parsed */
1.1373 - const char *zSql; /* All SQL text */
1.1374 - const char *zTail; /* All SQL text past the last semicolon parsed */
1.1375 - Table *pNewTable; /* A table being constructed by CREATE TABLE */
1.1376 - Trigger *pNewTrigger; /* Trigger under construct by a CREATE TRIGGER */
1.1377 - TriggerStack *trigStack; /* Trigger actions being coded */
1.1378 - const char *zAuthContext; /* The 6th parameter to db->xAuth callbacks */
1.1379 -#ifndef SQLITE_OMIT_VIRTUALTABLE
1.1380 - Token sArg; /* Complete text of a module argument */
1.1381 - u8 declareVtab; /* True if inside sqlite3_declare_vtab() */
1.1382 - Table *pVirtualLock; /* Require virtual table lock on this table */
1.1383 -#endif
1.1384 -#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
1.1385 - int nHeight; /* Expression tree height of current sub-select */
1.1386 -#endif
1.1387 -};
1.1388 -
1.1389 -#ifdef SQLITE_OMIT_VIRTUALTABLE
1.1390 - #define IN_DECLARE_VTAB 0
1.1391 -#else
1.1392 - #define IN_DECLARE_VTAB (pParse->declareVtab)
1.1393 -#endif
1.1394 -
1.1395 -/*
1.1396 -** An instance of the following structure can be declared on a stack and used
1.1397 -** to save the Parse.zAuthContext value so that it can be restored later.
1.1398 -*/
1.1399 -struct AuthContext {
1.1400 - const char *zAuthContext; /* Put saved Parse.zAuthContext here */
1.1401 - Parse *pParse; /* The Parse structure */
1.1402 -};
1.1403 -
1.1404 -/*
1.1405 -** Bitfield flags for P2 value in OP_Insert and OP_Delete
1.1406 -*/
1.1407 -#define OPFLAG_NCHANGE 1 /* Set to update db->nChange */
1.1408 -#define OPFLAG_LASTROWID 2 /* Set to update db->lastRowid */
1.1409 -#define OPFLAG_ISUPDATE 4 /* This OP_Insert is an sql UPDATE */
1.1410 -#define OPFLAG_APPEND 8 /* This is likely to be an append */
1.1411 -
1.1412 -/*
1.1413 - * Each trigger present in the database schema is stored as an instance of
1.1414 - * struct Trigger.
1.1415 - *
1.1416 - * Pointers to instances of struct Trigger are stored in two ways.
1.1417 - * 1. In the "trigHash" hash table (part of the sqlite3* that represents the
1.1418 - * database). This allows Trigger structures to be retrieved by name.
1.1419 - * 2. All triggers associated with a single table form a linked list, using the
1.1420 - * pNext member of struct Trigger. A pointer to the first element of the
1.1421 - * linked list is stored as the "pTrigger" member of the associated
1.1422 - * struct Table.
1.1423 - *
1.1424 - * The "step_list" member points to the first element of a linked list
1.1425 - * containing the SQL statements specified as the trigger program.
1.1426 - */
1.1427 -struct Trigger {
1.1428 - char *name; /* The name of the trigger */
1.1429 - char *table; /* The table or view to which the trigger applies */
1.1430 - u8 op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT */
1.1431 - u8 tr_tm; /* One of TRIGGER_BEFORE, TRIGGER_AFTER */
1.1432 - Expr *pWhen; /* The WHEN clause of the expresion (may be NULL) */
1.1433 - IdList *pColumns; /* If this is an UPDATE OF <column-list> trigger,
1.1434 - the <column-list> is stored here */
1.1435 - Token nameToken; /* Token containing zName. Use during parsing only */
1.1436 - Schema *pSchema; /* Schema containing the trigger */
1.1437 - Schema *pTabSchema; /* Schema containing the table */
1.1438 - TriggerStep *step_list; /* Link list of trigger program steps */
1.1439 - Trigger *pNext; /* Next trigger associated with the table */
1.1440 -};
1.1441 -
1.1442 -/*
1.1443 -** A trigger is either a BEFORE or an AFTER trigger. The following constants
1.1444 -** determine which.
1.1445 -**
1.1446 -** If there are multiple triggers, you might of some BEFORE and some AFTER.
1.1447 -** In that cases, the constants below can be ORed together.
1.1448 -*/
1.1449 -#define TRIGGER_BEFORE 1
1.1450 -#define TRIGGER_AFTER 2
1.1451 -
1.1452 -/*
1.1453 - * An instance of struct TriggerStep is used to store a single SQL statement
1.1454 - * that is a part of a trigger-program.
1.1455 - *
1.1456 - * Instances of struct TriggerStep are stored in a singly linked list (linked
1.1457 - * using the "pNext" member) referenced by the "step_list" member of the
1.1458 - * associated struct Trigger instance. The first element of the linked list is
1.1459 - * the first step of the trigger-program.
1.1460 - *
1.1461 - * The "op" member indicates whether this is a "DELETE", "INSERT", "UPDATE" or
1.1462 - * "SELECT" statement. The meanings of the other members is determined by the
1.1463 - * value of "op" as follows:
1.1464 - *
1.1465 - * (op == TK_INSERT)
1.1466 - * orconf -> stores the ON CONFLICT algorithm
1.1467 - * pSelect -> If this is an INSERT INTO ... SELECT ... statement, then
1.1468 - * this stores a pointer to the SELECT statement. Otherwise NULL.
1.1469 - * target -> A token holding the name of the table to insert into.
1.1470 - * pExprList -> If this is an INSERT INTO ... VALUES ... statement, then
1.1471 - * this stores values to be inserted. Otherwise NULL.
1.1472 - * pIdList -> If this is an INSERT INTO ... (<column-names>) VALUES ...
1.1473 - * statement, then this stores the column-names to be
1.1474 - * inserted into.
1.1475 - *
1.1476 - * (op == TK_DELETE)
1.1477 - * target -> A token holding the name of the table to delete from.
1.1478 - * pWhere -> The WHERE clause of the DELETE statement if one is specified.
1.1479 - * Otherwise NULL.
1.1480 - *
1.1481 - * (op == TK_UPDATE)
1.1482 - * target -> A token holding the name of the table to update rows of.
1.1483 - * pWhere -> The WHERE clause of the UPDATE statement if one is specified.
1.1484 - * Otherwise NULL.
1.1485 - * pExprList -> A list of the columns to update and the expressions to update
1.1486 - * them to. See sqlite3Update() documentation of "pChanges"
1.1487 - * argument.
1.1488 - *
1.1489 - */
1.1490 -struct TriggerStep {
1.1491 - int op; /* One of TK_DELETE, TK_UPDATE, TK_INSERT, TK_SELECT */
1.1492 - int orconf; /* OE_Rollback etc. */
1.1493 - Trigger *pTrig; /* The trigger that this step is a part of */
1.1494 -
1.1495 - Select *pSelect; /* Valid for SELECT and sometimes
1.1496 - INSERT steps (when pExprList == 0) */
1.1497 - Token target; /* Valid for DELETE, UPDATE, INSERT steps */
1.1498 - Expr *pWhere; /* Valid for DELETE, UPDATE steps */
1.1499 - ExprList *pExprList; /* Valid for UPDATE statements and sometimes
1.1500 - INSERT steps (when pSelect == 0) */
1.1501 - IdList *pIdList; /* Valid for INSERT statements only */
1.1502 - TriggerStep *pNext; /* Next in the link-list */
1.1503 - TriggerStep *pLast; /* Last element in link-list. Valid for 1st elem only */
1.1504 -};
1.1505 -
1.1506 -/*
1.1507 - * An instance of struct TriggerStack stores information required during code
1.1508 - * generation of a single trigger program. While the trigger program is being
1.1509 - * coded, its associated TriggerStack instance is pointed to by the
1.1510 - * "pTriggerStack" member of the Parse structure.
1.1511 - *
1.1512 - * The pTab member points to the table that triggers are being coded on. The
1.1513 - * newIdx member contains the index of the vdbe cursor that points at the temp
1.1514 - * table that stores the new.* references. If new.* references are not valid
1.1515 - * for the trigger being coded (for example an ON DELETE trigger), then newIdx
1.1516 - * is set to -1. The oldIdx member is analogous to newIdx, for old.* references.
1.1517 - *
1.1518 - * The ON CONFLICT policy to be used for the trigger program steps is stored
1.1519 - * as the orconf member. If this is OE_Default, then the ON CONFLICT clause
1.1520 - * specified for individual triggers steps is used.
1.1521 - *
1.1522 - * struct TriggerStack has a "pNext" member, to allow linked lists to be
1.1523 - * constructed. When coding nested triggers (triggers fired by other triggers)
1.1524 - * each nested trigger stores its parent trigger's TriggerStack as the "pNext"
1.1525 - * pointer. Once the nested trigger has been coded, the pNext value is restored
1.1526 - * to the pTriggerStack member of the Parse stucture and coding of the parent
1.1527 - * trigger continues.
1.1528 - *
1.1529 - * Before a nested trigger is coded, the linked list pointed to by the
1.1530 - * pTriggerStack is scanned to ensure that the trigger is not about to be coded
1.1531 - * recursively. If this condition is detected, the nested trigger is not coded.
1.1532 - */
1.1533 -struct TriggerStack {
1.1534 - Table *pTab; /* Table that triggers are currently being coded on */
1.1535 - int newIdx; /* Index of vdbe cursor to "new" temp table */
1.1536 - int oldIdx; /* Index of vdbe cursor to "old" temp table */
1.1537 - int orconf; /* Current orconf policy */
1.1538 - int ignoreJump; /* where to jump to for a RAISE(IGNORE) */
1.1539 - Trigger *pTrigger; /* The trigger currently being coded */
1.1540 - TriggerStack *pNext; /* Next trigger down on the trigger stack */
1.1541 -};
1.1542 -
1.1543 -/*
1.1544 -** The following structure contains information used by the sqliteFix...
1.1545 -** routines as they walk the parse tree to make database references
1.1546 -** explicit.
1.1547 -*/
1.1548 -typedef struct DbFixer DbFixer;
1.1549 -struct DbFixer {
1.1550 - Parse *pParse; /* The parsing context. Error messages written here */
1.1551 - const char *zDb; /* Make sure all objects are contained in this database */
1.1552 - const char *zType; /* Type of the container - used for error messages */
1.1553 - const Token *pName; /* Name of the container - used for error messages */
1.1554 -};
1.1555 -
1.1556 -/*
1.1557 -** A pointer to this structure is used to communicate information
1.1558 -** from sqlite3Init and OP_ParseSchema into the sqlite3InitCallback.
1.1559 -*/
1.1560 -typedef struct {
1.1561 - sqlite3 *db; /* The database being initialized */
1.1562 - int iDb; /* 0 for main database. 1 for TEMP, 2.. for ATTACHed */
1.1563 - char **pzErrMsg; /* Error message stored here */
1.1564 - int rc; /* Result code stored here */
1.1565 -} InitData;
1.1566 -
1.1567 -/*
1.1568 -** Assuming zIn points to the first byte of a UTF-8 character,
1.1569 -** advance zIn to point to the first byte of the next UTF-8 character.
1.1570 -*/
1.1571 -#define SQLITE_SKIP_UTF8(zIn) { \
1.1572 - if( (*(zIn++))>=0xc0 ){ \
1.1573 - while( (*zIn & 0xc0)==0x80 ){ zIn++; } \
1.1574 - } \
1.1575 -}
1.1576 -
1.1577 -/*
1.1578 -** The SQLITE_CORRUPT_BKPT macro can be either a constant (for production
1.1579 -** builds) or a function call (for debugging). If it is a function call,
1.1580 -** it allows the operator to set a breakpoint at the spot where database
1.1581 -** corruption is first detected.
1.1582 -*/
1.1583 -#ifdef SQLITE_DEBUG
1.1584 - int sqlite3Corrupt(void);
1.1585 -# define SQLITE_CORRUPT_BKPT sqlite3Corrupt()
1.1586 -#else
1.1587 -# define SQLITE_CORRUPT_BKPT SQLITE_CORRUPT
1.1588 -#endif
1.1589 -
1.1590 -/*
1.1591 -** Internal function prototypes
1.1592 -*/
1.1593 -int sqlite3StrICmp(const char *, const char *);
1.1594 -int sqlite3StrNICmp(const char *, const char *, int);
1.1595 -int sqlite3IsNumber(const char*, int*, u8);
1.1596 -
1.1597 -void *sqlite3MallocZero(unsigned);
1.1598 -void *sqlite3DbMallocZero(sqlite3*, unsigned);
1.1599 -void *sqlite3DbMallocRaw(sqlite3*, unsigned);
1.1600 -char *sqlite3StrDup(const char*);
1.1601 -char *sqlite3StrNDup(const char*, int);
1.1602 -char *sqlite3DbStrDup(sqlite3*,const char*);
1.1603 -char *sqlite3DbStrNDup(sqlite3*,const char*, int);
1.1604 -void *sqlite3DbReallocOrFree(sqlite3 *, void *, int);
1.1605 -void *sqlite3DbRealloc(sqlite3 *, void *, int);
1.1606 -
1.1607 -char *sqlite3MPrintf(sqlite3*,const char*, ...);
1.1608 -char *sqlite3VMPrintf(sqlite3*,const char*, va_list);
1.1609 -#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
1.1610 - void sqlite3DebugPrintf(const char*, ...);
1.1611 - void *sqlite3TextToPtr(const char*);
1.1612 -#endif
1.1613 -void sqlite3SetString(char **, ...);
1.1614 -void sqlite3ErrorMsg(Parse*, const char*, ...);
1.1615 -void sqlite3ErrorClear(Parse*);
1.1616 -void sqlite3Dequote(char*);
1.1617 -void sqlite3DequoteExpr(sqlite3*, Expr*);
1.1618 -int sqlite3KeywordCode(const unsigned char*, int);
1.1619 -int sqlite3RunParser(Parse*, const char*, char **);
1.1620 -void sqlite3FinishCoding(Parse*);
1.1621 -Expr *sqlite3Expr(sqlite3*, int, Expr*, Expr*, const Token*);
1.1622 -Expr *sqlite3PExpr(Parse*, int, Expr*, Expr*, const Token*);
1.1623 -Expr *sqlite3RegisterExpr(Parse*,Token*);
1.1624 -Expr *sqlite3ExprAnd(sqlite3*,Expr*, Expr*);
1.1625 -void sqlite3ExprSpan(Expr*,Token*,Token*);
1.1626 -Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
1.1627 -void sqlite3ExprAssignVarNumber(Parse*, Expr*);
1.1628 -void sqlite3ExprDelete(Expr*);
1.1629 -ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*,Token*);
1.1630 -void sqlite3ExprListDelete(ExprList*);
1.1631 -int sqlite3Init(sqlite3*, char**);
1.1632 -int sqlite3InitCallback(void*, int, char**, char**);
1.1633 -void sqlite3Pragma(Parse*,Token*,Token*,Token*,int);
1.1634 -void sqlite3ResetInternalSchema(sqlite3*, int);
1.1635 -void sqlite3BeginParse(Parse*,int);
1.1636 -void sqlite3CommitInternalChanges(sqlite3*);
1.1637 -Table *sqlite3ResultSetOfSelect(Parse*,char*,Select*);
1.1638 -void sqlite3OpenMasterTable(Parse *, int);
1.1639 -void sqlite3StartTable(Parse*,Token*,Token*,int,int,int,int);
1.1640 -void sqlite3AddColumn(Parse*,Token*);
1.1641 -void sqlite3AddNotNull(Parse*, int);
1.1642 -void sqlite3AddPrimaryKey(Parse*, ExprList*, int, int, int);
1.1643 -void sqlite3AddCheckConstraint(Parse*, Expr*);
1.1644 -void sqlite3AddColumnType(Parse*,Token*);
1.1645 -void sqlite3AddDefaultValue(Parse*,Expr*);
1.1646 -void sqlite3AddCollateType(Parse*, const char*, int);
1.1647 -void sqlite3EndTable(Parse*,Token*,Token*,Select*);
1.1648 -
1.1649 -void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int,int);
1.1650 -
1.1651 -#if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE)
1.1652 - int sqlite3ViewGetColumnNames(Parse*,Table*);
1.1653 -#else
1.1654 -# define sqlite3ViewGetColumnNames(A,B) 0
1.1655 -#endif
1.1656 -
1.1657 -void sqlite3DropTable(Parse*, SrcList*, int, int);
1.1658 -void sqlite3DeleteTable(Table*);
1.1659 -void sqlite3Insert(Parse*, SrcList*, ExprList*, Select*, IdList*, int);
1.1660 -void *sqlite3ArrayAllocate(sqlite3*,void*,int,int,int*,int*,int*);
1.1661 -IdList *sqlite3IdListAppend(sqlite3*, IdList*, Token*);
1.1662 -int sqlite3IdListIndex(IdList*,const char*);
1.1663 -SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*);
1.1664 -SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*,
1.1665 - Select*, Expr*, IdList*);
1.1666 -void sqlite3SrcListShiftJoinType(SrcList*);
1.1667 -void sqlite3SrcListAssignCursors(Parse*, SrcList*);
1.1668 -void sqlite3IdListDelete(IdList*);
1.1669 -void sqlite3SrcListDelete(SrcList*);
1.1670 -void sqlite3CreateIndex(Parse*,Token*,Token*,SrcList*,ExprList*,int,Token*,
1.1671 - Token*, int, int);
1.1672 -void sqlite3DropIndex(Parse*, SrcList*, int);
1.1673 -int sqlite3Select(Parse*, Select*, int, int, Select*, int, int*, char *aff);
1.1674 -Select *sqlite3SelectNew(Parse*,ExprList*,SrcList*,Expr*,ExprList*,
1.1675 - Expr*,ExprList*,int,Expr*,Expr*);
1.1676 -void sqlite3SelectDelete(Select*);
1.1677 -Table *sqlite3SrcListLookup(Parse*, SrcList*);
1.1678 -int sqlite3IsReadOnly(Parse*, Table*, int);
1.1679 -void sqlite3OpenTable(Parse*, int iCur, int iDb, Table*, int);
1.1680 -void sqlite3DeleteFrom(Parse*, SrcList*, Expr*);
1.1681 -void sqlite3Update(Parse*, SrcList*, ExprList*, Expr*, int);
1.1682 -WhereInfo *sqlite3WhereBegin(Parse*, SrcList*, Expr*, ExprList**);
1.1683 -void sqlite3WhereEnd(WhereInfo*);
1.1684 -void sqlite3ExprCodeGetColumn(Vdbe*, Table*, int, int);
1.1685 -void sqlite3ExprCode(Parse*, Expr*);
1.1686 -void sqlite3ExprCodeAndCache(Parse*, Expr*);
1.1687 -int sqlite3ExprCodeExprList(Parse*, ExprList*);
1.1688 -void sqlite3ExprIfTrue(Parse*, Expr*, int, int);
1.1689 -void sqlite3ExprIfFalse(Parse*, Expr*, int, int);
1.1690 -Table *sqlite3FindTable(sqlite3*,const char*, const char*);
1.1691 -Table *sqlite3LocateTable(Parse*,const char*, const char*);
1.1692 -Index *sqlite3FindIndex(sqlite3*,const char*, const char*);
1.1693 -void sqlite3UnlinkAndDeleteTable(sqlite3*,int,const char*);
1.1694 -void sqlite3UnlinkAndDeleteIndex(sqlite3*,int,const char*);
1.1695 -void sqlite3Vacuum(Parse*);
1.1696 -int sqlite3RunVacuum(char**, sqlite3*);
1.1697 -char *sqlite3NameFromToken(sqlite3*, Token*);
1.1698 -int sqlite3ExprCompare(Expr*, Expr*);
1.1699 -int sqlite3ExprResolveNames(NameContext *, Expr *);
1.1700 -int sqlite3ExprAnalyzeAggregates(NameContext*, Expr*);
1.1701 -int sqlite3ExprAnalyzeAggList(NameContext*,ExprList*);
1.1702 -Vdbe *sqlite3GetVdbe(Parse*);
1.1703 -Expr *sqlite3CreateIdExpr(Parse *, const char*);
1.1704 -void sqlite3Randomness(int, void*);
1.1705 -void sqlite3RollbackAll(sqlite3*);
1.1706 -void sqlite3CodeVerifySchema(Parse*, int);
1.1707 -void sqlite3BeginTransaction(Parse*, int);
1.1708 -void sqlite3CommitTransaction(Parse*);
1.1709 -void sqlite3RollbackTransaction(Parse*);
1.1710 -int sqlite3ExprIsConstant(Expr*);
1.1711 -int sqlite3ExprIsConstantNotJoin(Expr*);
1.1712 -int sqlite3ExprIsConstantOrFunction(Expr*);
1.1713 -int sqlite3ExprIsInteger(Expr*, int*);
1.1714 -int sqlite3IsRowid(const char*);
1.1715 -void sqlite3GenerateRowDelete(sqlite3*, Vdbe*, Table*, int, int);
1.1716 -void sqlite3GenerateRowIndexDelete(Vdbe*, Table*, int, char*);
1.1717 -void sqlite3GenerateIndexKey(Vdbe*, Index*, int);
1.1718 -void sqlite3GenerateConstraintChecks(Parse*,Table*,int,char*,int,int,int,int);
1.1719 -void sqlite3CompleteInsertion(Parse*, Table*, int, char*, int, int, int, int);
1.1720 -void sqlite3OpenTableAndIndices(Parse*, Table*, int, int);
1.1721 -void sqlite3BeginWriteOperation(Parse*, int, int);
1.1722 -Expr *sqlite3ExprDup(sqlite3*,Expr*);
1.1723 -void sqlite3TokenCopy(sqlite3*,Token*, Token*);
1.1724 -ExprList *sqlite3ExprListDup(sqlite3*,ExprList*);
1.1725 -SrcList *sqlite3SrcListDup(sqlite3*,SrcList*);
1.1726 -IdList *sqlite3IdListDup(sqlite3*,IdList*);
1.1727 -Select *sqlite3SelectDup(sqlite3*,Select*);
1.1728 -FuncDef *sqlite3FindFunction(sqlite3*,const char*,int,int,u8,int);
1.1729 -void sqlite3RegisterBuiltinFunctions(sqlite3*);
1.1730 -void sqlite3RegisterDateTimeFunctions(sqlite3*);
1.1731 -int sqlite3SafetyOn(sqlite3*);
1.1732 -int sqlite3SafetyOff(sqlite3*);
1.1733 -int sqlite3SafetyCheck(sqlite3*);
1.1734 -void sqlite3ChangeCookie(sqlite3*, Vdbe*, int);
1.1735 -
1.1736 -#ifndef SQLITE_OMIT_TRIGGER
1.1737 - void sqlite3BeginTrigger(Parse*, Token*,Token*,int,int,IdList*,SrcList*,
1.1738 - Expr*,int, int);
1.1739 - void sqlite3FinishTrigger(Parse*, TriggerStep*, Token*);
1.1740 - void sqlite3DropTrigger(Parse*, SrcList*, int);
1.1741 - void sqlite3DropTriggerPtr(Parse*, Trigger*);
1.1742 - int sqlite3TriggersExist(Parse*, Table*, int, ExprList*);
1.1743 - int sqlite3CodeRowTrigger(Parse*, int, ExprList*, int, Table *, int, int,
1.1744 - int, int);
1.1745 - void sqliteViewTriggers(Parse*, Table*, Expr*, int, ExprList*);
1.1746 - void sqlite3DeleteTriggerStep(TriggerStep*);
1.1747 - TriggerStep *sqlite3TriggerSelectStep(sqlite3*,Select*);
1.1748 - TriggerStep *sqlite3TriggerInsertStep(sqlite3*,Token*, IdList*,
1.1749 - ExprList*,Select*,int);
1.1750 - TriggerStep *sqlite3TriggerUpdateStep(sqlite3*,Token*,ExprList*, Expr*, int);
1.1751 - TriggerStep *sqlite3TriggerDeleteStep(sqlite3*,Token*, Expr*);
1.1752 - void sqlite3DeleteTrigger(Trigger*);
1.1753 - void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*);
1.1754 -#else
1.1755 -# define sqlite3TriggersExist(A,B,C,D,E,F) 0
1.1756 -# define sqlite3DeleteTrigger(A)
1.1757 -# define sqlite3DropTriggerPtr(A,B)
1.1758 -# define sqlite3UnlinkAndDeleteTrigger(A,B,C)
1.1759 -# define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I) 0
1.1760 -#endif
1.1761 -
1.1762 -int sqlite3JoinType(Parse*, Token*, Token*, Token*);
1.1763 -void sqlite3CreateForeignKey(Parse*, ExprList*, Token*, ExprList*, int);
1.1764 -void sqlite3DeferForeignKey(Parse*, int);
1.1765 -#ifndef SQLITE_OMIT_AUTHORIZATION
1.1766 - void sqlite3AuthRead(Parse*,Expr*,Schema*,SrcList*);
1.1767 - int sqlite3AuthCheck(Parse*,int, const char*, const char*, const char*);
1.1768 - void sqlite3AuthContextPush(Parse*, AuthContext*, const char*);
1.1769 - void sqlite3AuthContextPop(AuthContext*);
1.1770 -#else
1.1771 -# define sqlite3AuthRead(a,b,c)
1.1772 -# define sqlite3AuthCheck(a,b,c,d,e) SQLITE_OK
1.1773 -# define sqlite3AuthContextPush(a,b,c)
1.1774 -# define sqlite3AuthContextPop(a) ((void)(a))
1.1775 -#endif
1.1776 -void sqlite3Attach(Parse*, Expr*, Expr*, Expr*);
1.1777 -void sqlite3Detach(Parse*, Expr*);
1.1778 -int sqlite3BtreeFactory(const sqlite3 *db, const char *zFilename,
1.1779 - int omitJournal, int nCache, int flags, Btree **ppBtree);
1.1780 -int sqlite3FixInit(DbFixer*, Parse*, int, const char*, const Token*);
1.1781 -int sqlite3FixSrcList(DbFixer*, SrcList*);
1.1782 -int sqlite3FixSelect(DbFixer*, Select*);
1.1783 -int sqlite3FixExpr(DbFixer*, Expr*);
1.1784 -int sqlite3FixExprList(DbFixer*, ExprList*);
1.1785 -int sqlite3FixTriggerStep(DbFixer*, TriggerStep*);
1.1786 -int sqlite3AtoF(const char *z, double*);
1.1787 -char *sqlite3_snprintf(int,char*,const char*,...);
1.1788 -int sqlite3GetInt32(const char *, int*);
1.1789 -int sqlite3FitsIn64Bits(const char *);
1.1790 -int sqlite3Utf16ByteLen(const void *pData, int nChar);
1.1791 -int sqlite3Utf8CharLen(const char *pData, int nByte);
1.1792 -int sqlite3Utf8Read(const u8*, const u8*, const u8**);
1.1793 -int sqlite3PutVarint(unsigned char *, u64);
1.1794 -int sqlite3GetVarint(const unsigned char *, u64 *);
1.1795 -int sqlite3GetVarint32(const unsigned char *, u32 *);
1.1796 -int sqlite3VarintLen(u64 v);
1.1797 -void sqlite3IndexAffinityStr(Vdbe *, Index *);
1.1798 -void sqlite3TableAffinityStr(Vdbe *, Table *);
1.1799 -char sqlite3CompareAffinity(Expr *pExpr, char aff2);
1.1800 -int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);
1.1801 -char sqlite3ExprAffinity(Expr *pExpr);
1.1802 -int sqlite3Atoi64(const char*, i64*);
1.1803 -void sqlite3Error(sqlite3*, int, const char*,...);
1.1804 -void *sqlite3HexToBlob(sqlite3*, const char *z);
1.1805 -int sqlite3TwoPartName(Parse *, Token *, Token *, Token **);
1.1806 -const char *sqlite3ErrStr(int);
1.1807 -int sqlite3ReadSchema(Parse *pParse);
1.1808 -CollSeq *sqlite3FindCollSeq(sqlite3*,u8 enc, const char *,int,int);
1.1809 -CollSeq *sqlite3LocateCollSeq(Parse *pParse, const char *zName, int nName);
1.1810 -CollSeq *sqlite3ExprCollSeq(Parse *pParse, Expr *pExpr);
1.1811 -Expr *sqlite3ExprSetColl(Parse *pParse, Expr *, Token *);
1.1812 -int sqlite3CheckCollSeq(Parse *, CollSeq *);
1.1813 -int sqlite3CheckObjectName(Parse *, const char *);
1.1814 -void sqlite3VdbeSetChanges(sqlite3 *, int);
1.1815 -
1.1816 -const void *sqlite3ValueText(sqlite3_value*, u8);
1.1817 -int sqlite3ValueBytes(sqlite3_value*, u8);
1.1818 -void sqlite3ValueSetStr(sqlite3_value*, int, const void *,u8,
1.1819 - void(*)(void*));
1.1820 -void sqlite3ValueFree(sqlite3_value*);
1.1821 -sqlite3_value *sqlite3ValueNew(sqlite3 *);
1.1822 -char *sqlite3Utf16to8(sqlite3 *, const void*, int);
1.1823 -int sqlite3ValueFromExpr(sqlite3 *, Expr *, u8, u8, sqlite3_value **);
1.1824 -void sqlite3ValueApplyAffinity(sqlite3_value *, u8, u8);
1.1825 -#ifndef SQLITE_AMALGAMATION
1.1826 -extern const unsigned char sqlite3UpperToLower[];
1.1827 -#endif
1.1828 -void sqlite3RootPageMoved(Db*, int, int);
1.1829 -void sqlite3Reindex(Parse*, Token*, Token*);
1.1830 -void sqlite3AlterFunctions(sqlite3*);
1.1831 -void sqlite3AlterRenameTable(Parse*, SrcList*, Token*);
1.1832 -int sqlite3GetToken(const unsigned char *, int *);
1.1833 -void sqlite3NestedParse(Parse*, const char*, ...);
1.1834 -void sqlite3ExpirePreparedStatements(sqlite3*);
1.1835 -void sqlite3CodeSubselect(Parse *, Expr *);
1.1836 -int sqlite3SelectResolve(Parse *, Select *, NameContext *);
1.1837 -void sqlite3ColumnDefault(Vdbe *, Table *, int);
1.1838 -void sqlite3AlterFinishAddColumn(Parse *, Token *);
1.1839 -void sqlite3AlterBeginAddColumn(Parse *, SrcList *);
1.1840 -CollSeq *sqlite3GetCollSeq(sqlite3*, CollSeq *, const char *, int);
1.1841 -char sqlite3AffinityType(const Token*);
1.1842 -void sqlite3Analyze(Parse*, Token*, Token*);
1.1843 -int sqlite3InvokeBusyHandler(BusyHandler*);
1.1844 -int sqlite3FindDb(sqlite3*, Token*);
1.1845 -int sqlite3AnalysisLoad(sqlite3*,int iDB);
1.1846 -void sqlite3DefaultRowEst(Index*);
1.1847 -void sqlite3RegisterLikeFunctions(sqlite3*, int);
1.1848 -int sqlite3IsLikeFunction(sqlite3*,Expr*,int*,char*);
1.1849 -void sqlite3AttachFunctions(sqlite3 *);
1.1850 -void sqlite3MinimumFileFormat(Parse*, int, int);
1.1851 -void sqlite3SchemaFree(void *);
1.1852 -Schema *sqlite3SchemaGet(sqlite3 *, Btree *);
1.1853 -int sqlite3SchemaToIndex(sqlite3 *db, Schema *);
1.1854 -KeyInfo *sqlite3IndexKeyinfo(Parse *, Index *);
1.1855 -int sqlite3CreateFunc(sqlite3 *, const char *, int, int, void *,
1.1856 - void (*)(sqlite3_context*,int,sqlite3_value **),
1.1857 - void (*)(sqlite3_context*,int,sqlite3_value **), void (*)(sqlite3_context*));
1.1858 -int sqlite3ApiExit(sqlite3 *db, int);
1.1859 -void sqlite3AbortOtherActiveVdbes(sqlite3 *, Vdbe *);
1.1860 -int sqlite3OpenTempDatabase(Parse *);
1.1861 -
1.1862 -
1.1863 -/*
1.1864 -** The interface to the LEMON-generated parser
1.1865 -*/
1.1866 -void *sqlite3ParserAlloc(void*(*)(size_t));
1.1867 -void sqlite3ParserFree(void*, void(*)(void*));
1.1868 -void sqlite3Parser(void*, int, Token, Parse*);
1.1869 -
1.1870 -#ifndef SQLITE_OMIT_LOAD_EXTENSION
1.1871 - void sqlite3CloseExtensions(sqlite3*);
1.1872 - int sqlite3AutoLoadExtensions(sqlite3*);
1.1873 -#else
1.1874 -# define sqlite3CloseExtensions(X)
1.1875 -# define sqlite3AutoLoadExtensions(X) SQLITE_OK
1.1876 -#endif
1.1877 -
1.1878 -#ifndef SQLITE_OMIT_SHARED_CACHE
1.1879 - void sqlite3TableLock(Parse *, int, int, u8, const char *);
1.1880 -#else
1.1881 - #define sqlite3TableLock(v,w,x,y,z)
1.1882 -#endif
1.1883 -
1.1884 -#ifdef SQLITE_TEST
1.1885 - int sqlite3Utf8To8(unsigned char*);
1.1886 -#endif
1.1887 -
1.1888 -/*
1.1889 -** The MallocDisallow() and MallocAllow() routines are like asserts.
1.1890 -** Call them around a section of code that you do not expect to do
1.1891 -** any memory allocation.
1.1892 -*/
1.1893 -#ifdef SQLITE_MEMDEBUG
1.1894 - void sqlite3MallocDisallow(void);
1.1895 - void sqlite3MallocAllow(void);
1.1896 - void sqlite3MallocBenignFailure(int);
1.1897 - void sqlite3MallocEnterBenignBlock(int isBenign);
1.1898 - void sqlite3MallocLeaveBenignBlock();
1.1899 -#else
1.1900 -# define sqlite3MallocDisallow()
1.1901 -# define sqlite3MallocAllow()
1.1902 -# define sqlite3MallocBenignFailure(x)
1.1903 -# define sqlite3MallocEnterBenignBlock(x);
1.1904 -# define sqlite3MallocLeaveBenignBlock();
1.1905 -#endif
1.1906 -
1.1907 -
1.1908 -#ifdef SQLITE_OMIT_VIRTUALTABLE
1.1909 -# define sqlite3VtabClear(X)
1.1910 -# define sqlite3VtabSync(X,Y) (Y)
1.1911 -# define sqlite3VtabRollback(X)
1.1912 -# define sqlite3VtabCommit(X)
1.1913 -#else
1.1914 - void sqlite3VtabClear(Table*);
1.1915 - int sqlite3VtabSync(sqlite3 *db, int rc);
1.1916 - int sqlite3VtabRollback(sqlite3 *db);
1.1917 - int sqlite3VtabCommit(sqlite3 *db);
1.1918 -#endif
1.1919 -void sqlite3VtabLock(sqlite3_vtab*);
1.1920 -void sqlite3VtabUnlock(sqlite3*, sqlite3_vtab*);
1.1921 -void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*);
1.1922 -void sqlite3VtabFinishParse(Parse*, Token*);
1.1923 -void sqlite3VtabArgInit(Parse*);
1.1924 -void sqlite3VtabArgExtend(Parse*, Token*);
1.1925 -int sqlite3VtabCallCreate(sqlite3*, int, const char *, char **);
1.1926 -int sqlite3VtabCallConnect(Parse*, Table*);
1.1927 -int sqlite3VtabCallDestroy(sqlite3*, int, const char *);
1.1928 -int sqlite3VtabBegin(sqlite3 *, sqlite3_vtab *);
1.1929 -FuncDef *sqlite3VtabOverloadFunction(sqlite3 *,FuncDef*, int nArg, Expr*);
1.1930 -void sqlite3InvalidFunction(sqlite3_context*,int,sqlite3_value**);
1.1931 -int sqlite3Reprepare(Vdbe*);
1.1932 -void sqlite3ExprListCheckLength(Parse*, ExprList*, int, const char*);
1.1933 -CollSeq *sqlite3BinaryCompareCollSeq(Parse *, Expr *, Expr *);
1.1934 -
1.1935 -#ifdef SQLITE_ENABLE_ATOMIC_WRITE
1.1936 - int sqlite3JournalOpen(sqlite3_vfs *, const char *, sqlite3_file *, int, int);
1.1937 - int sqlite3JournalSize(sqlite3_vfs *);
1.1938 - int sqlite3JournalCreate(sqlite3_file *);
1.1939 -#else
1.1940 - #define sqlite3JournalSize(pVfs) ((pVfs)->szOsFile)
1.1941 -#endif
1.1942 -
1.1943 -#if defined(SQLITE_TEST) || SQLITE_MAX_EXPR_DEPTH>0
1.1944 - void sqlite3ExprSetHeight(Expr *);
1.1945 - int sqlite3SelectExprHeight(Select *);
1.1946 -#else
1.1947 - #define sqlite3ExprSetHeight(x)
1.1948 -#endif
1.1949 -
1.1950 -u32 sqlite3Get4byte(const u8*);
1.1951 -void sqlite3Put4byte(u8*, u32);
1.1952 -
1.1953 -#ifdef SQLITE_SSE
1.1954 -#include "sseInt.h"
1.1955 -#endif
1.1956 -
1.1957 -#ifdef SQLITE_DEBUG
1.1958 - void sqlite3ParserTrace(FILE*, char *);
1.1959 -#endif
1.1960 -
1.1961 -/*
1.1962 -** If the SQLITE_ENABLE IOTRACE exists then the global variable
1.1963 -** sqlite3_io_trace is a pointer to a printf-like routine used to
1.1964 -** print I/O tracing messages.
1.1965 -*/
1.1966 -#ifdef SQLITE_ENABLE_IOTRACE
1.1967 -# define IOTRACE(A) if( sqlite3_io_trace ){ sqlite3_io_trace A; }
1.1968 - void sqlite3VdbeIOTraceSql(Vdbe*);
1.1969 -#else
1.1970 -# define IOTRACE(A)
1.1971 -# define sqlite3VdbeIOTraceSql(X)
1.1972 -#endif
1.1973 -SQLITE_EXTERN void (*sqlite3_io_trace)(const char*,...);
1.1974 -
1.1975 -#endif
