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#include "parser.h"

#include "utils.h"

#include <stdio.h>

#include <stdlib.h>

QT_BEGIN_NAMESPACE

#ifdef USE_LEXEM_STORE

Symbol::LexemStore Symbol::lexemStore;

#endif

static const char *error_msg = 0;

#ifdef Q_CC_MSVC

#define ErrorFormatString "%s(%d): "

#else

#define ErrorFormatString "%s:%d: "

#endif

void Parser::error(int rollback) {

    index -= rollback;

    error();

}

void Parser::error(const char *msg) {

    if (msg || error_msg)

        qWarning(ErrorFormatString "Error: %s",

                 currentFilenames.top().constData(), symbol().lineNum, msg?msg:error_msg);

    else

        qWarning(ErrorFormatString "Parse error at \"%s\"",

                 currentFilenames.top().constData(), symbol().lineNum, symbol().lexem().data());

    exit(EXIT_FAILURE);

}

void Parser::warning(const char *msg) {

    if (displayWarnings && msg)

        fprintf(stderr, ErrorFormatString "Warning: %s\n",

                currentFilenames.top().constData(), qMax(0, index > 0 ? symbol().lineNum : 0), msg);

}

QT_END_NAMESPACE