156 lines
3.6 KiB
Plaintext
156 lines
3.6 KiB
Plaintext
/*
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This file is part of Warzone 2100.
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Copyright (C) 1999-2004 Eidos Interactive
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Copyright (C) 2005-2007 Warzone Resurrection Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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%{
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/*
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* Level.l
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*
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* lexer for loading level description files
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*
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*/
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#include <stdio.h>
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#include "lib/framework/frame.h"
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#include "src/levels.h"
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#include "src/levelint.h"
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/* Maximum length for any TEXT value */
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#ifndef YYLMAX
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#define YYLMAX 255
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#endif
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/* Store for any string values */
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static char aText[YYLMAX];
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// Note if we are in a comment
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static BOOL inComment = FALSE;
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/* Pointer to the input buffer */
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static const char *pInputBuffer = NULL;
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static const char *pEndBuffer = NULL;
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#define YY_INPUT(buf, result, max_size) \
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if (pInputBuffer != pEndBuffer) { \
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buf[0] = *(pInputBuffer++); result = 1; \
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} else { \
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buf[0] = EOF; result = YY_NULL; \
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}
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#undef lev_getc
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#define lev_getc() (pInputBuffer != pEndBuffer ? *(pInputBuffer++) : EOF)
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%}
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%option nounput
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%option prefix="lev_"
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%option yylineno
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%x COMMENT
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%x SLCOMMENT
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%x QUOTE
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%%
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/* Keywords */
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level return LTK_LEVEL;
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players return LTK_PLAYERS;
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type return LTK_TYPE;
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data return LTK_DATA;
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game return LTK_GAME;
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campaign return LTK_CAMPAIGN;
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camstart return LTK_CAMSTART;
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camchange return LTK_CAMCHANGE;
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dataset return LTK_DATASET;
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expand return LTK_EXPAND;
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expand_limbo return LTK_EXPAND_LIMBO;
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between return LTK_BETWEEN;
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miss_keep return LTK_MKEEP;
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miss_keep_limbo return LTK_MKEEP_LIMBO;
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miss_clear return LTK_MCLEAR;
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/* Match text values */
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[a-zA-Z][-0-9_a-zA-Z]* {
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strlcpy(aText, lev_text, sizeof(aText));
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pLevToken = aText;
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return LTK_IDENT;
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}
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/* Match quoted text */
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\" { BEGIN QUOTE; }
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<QUOTE>\" { BEGIN 0; }
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<QUOTE>\n { levError("Unexpected end of line in string"); }
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<QUOTE>[^\"]* {
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strlcpy(aText, lev_text, sizeof(aText));
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pLevToken = aText;
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return LTK_STRING;
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}
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/* Match integer numbers */
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-?[0-9]+ { levVal = atol(lev_text); return LTK_INTEGER; }
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/* Skip white space */
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[ \t\n\x0d\x0a] ;
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/* Strip comments */
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"/*" { inComment=TRUE; BEGIN COMMENT; }
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<COMMENT>"*/" |
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<COMMENT>"*/"\n { inComment=FALSE; BEGIN 0; }
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<COMMENT>. |
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<COMMENT>\n ;
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/* Strip single line comments */
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"//" { BEGIN SLCOMMENT; }
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<SLCOMMENT>\n { BEGIN 0; }
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<SLCOMMENT>[^\n]* ;
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/* Match anything that's been missed and pass it as a char */
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. return lev_text[0];
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%%
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/* Set the current input buffer for the lexer */
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void levSetInputBuffer(char *pBuffer, UDWORD size)
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{
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pInputBuffer = pBuffer;
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pEndBuffer = pBuffer + size;
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/* Reset the lexer incase it's been used before */
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lev__flush_buffer(YY_CURRENT_BUFFER);
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inComment = FALSE;
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}
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void levGetErrorData(int *pLine, char **ppText)
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{
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*pLine = lev_lineno;
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*ppText = lev_text;
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}
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int lev_wrap(void)
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{
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if (inComment)
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{
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debug( LOG_ERROR, "Warning: reched end of file in a comment" );
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abort();
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}
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return 1;
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}
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