// Copyright (c) 2005, Google Inc.

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//

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//

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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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// Author: Greg J. Badros

//

// Unittest for scanner, especially GetNextComments and GetComments()

// functionality.

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include <stdio.h>

#include <string>

#include <vector>

#include "pcrecpp.h"

#include "pcre_stringpiece.h"

#include "pcre_scanner.h"

#define FLAGS_unittest_stack_size   49152

// Dies with a fatal error if the two values are not equal.

#define CHECK_EQ(a, b)  do {                                    \

  if ( (a) != (b) ) {                                           \

    fprintf(stderr, "%s:%d: Check failed because %s != %s\n",   \

            __FILE__, __LINE__, #a, #b);                        \

    exit(1);                                                    \

  }                                                             \

} while (0)

using std::vector;

using pcrecpp::StringPiece;

using pcrecpp::Scanner;

static void TestScanner() {

  const char input[] = "\n"

                       "alpha = 1; // this sets alpha\n"

                       "bravo = 2; // bravo is set here\n"

                       "gamma = 33; /* and here is gamma */\n";

  const char *re = "(\\w+) = (\\d+);";

  Scanner s(input);

  string var;

  int number;

  s.SkipCXXComments();

  s.set_save_comments(true);

  vector<StringPiece> comments;

  s.Consume(re, &var, &number);

  CHECK_EQ(var, "alpha");

  CHECK_EQ(number, 1);

  CHECK_EQ(s.LineNumber(), 3);

  s.GetNextComments(&comments);

  CHECK_EQ(comments.size(), 1);

  CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");

  comments.resize(0);

  s.Consume(re, &var, &number);

  CHECK_EQ(var, "bravo");

  CHECK_EQ(number, 2);

  s.GetNextComments(&comments);

  CHECK_EQ(comments.size(), 1);

  CHECK_EQ(comments[0].as_string(), " // bravo is set here\n");

  comments.resize(0);

  s.Consume(re, &var, &number);

  CHECK_EQ(var, "gamma");

  CHECK_EQ(number, 33);

  s.GetNextComments(&comments);

  CHECK_EQ(comments.size(), 1);

  CHECK_EQ(comments[0].as_string(), " /* and here is gamma */\n");

  comments.resize(0);

  s.GetComments(0, sizeof(input), &comments);

  CHECK_EQ(comments.size(), 3);

  CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");

  CHECK_EQ(comments[1].as_string(), " // bravo is set here\n");

  CHECK_EQ(comments[2].as_string(), " /* and here is gamma */\n");

  comments.resize(0);

  s.GetComments(0, strchr(input, '/') - input, &comments);

  CHECK_EQ(comments.size(), 0);

  comments.resize(0);

  s.GetComments(strchr(input, '/') - input - 1, sizeof(input),

                &comments);

  CHECK_EQ(comments.size(), 3);

  CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");

  CHECK_EQ(comments[1].as_string(), " // bravo is set here\n");

  CHECK_EQ(comments[2].as_string(), " /* and here is gamma */\n");

  comments.resize(0);

  s.GetComments(strchr(input, '/') - input - 1,

                strchr(input + 1, '\n') - input + 1, &comments);

  CHECK_EQ(comments.size(), 1);

  CHECK_EQ(comments[0].as_string(), " // this sets alpha\n");

  comments.resize(0);

}

static void TestBigComment() {

  string input;

  for (int i = 0; i < 1024; ++i) {

    char buf[1024];  // definitely big enough

    sprintf(buf, "    # Comment %d\n", i);

    input += buf;

  }

  input += "name = value;\n";

  Scanner s(input.c_str());

  s.SetSkipExpression("\\s+|#.*\n");

  string name;

  string value;

  s.Consume("(\\w+) = (\\w+);", &name, &value);

  CHECK_EQ(name, "name");

  CHECK_EQ(value, "value");

}

// TODO: also test scanner and big-comment in a thread with a

//       small stack size

int main(int argc, char** argv) {

  TestScanner();

  TestBigComment();

  // Done

  printf("OK\n");

  return 0;

}