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  • Committer: Alexandre Hardy
  • Date: 2009-07-17 09:20:57 UTC
  • Revision ID: ah@zenwalk-20090717092057-oxa4o16isawqa7ue
Initial creation of project

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oldparser/program.lex
 
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%{
 
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#include <string.h>
 
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#include <math.h>
 
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#include <stdio.h>
 
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static int lineno=1;
 
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%}
 
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digit   [0-9]
 
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id      [a-zA-Z_][A-Za-z0-9_]*
 
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comment [#].*[\n]
 
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white   [ \r\t]
 
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newline [\n]
 
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int     {digit}+
 
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float   {int}"."{int}
 
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num     [\+\-]?({float}|{int})
 
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value   {int}
 
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string  \"[^\"]*\"
 
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%%
 
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if              { return IF;}
 
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else            { return ELSE;}
 
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while           { return WHILE;}
 
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delay           { return DELAY;}
 
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wait            { return WAIT;}
 
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var             { return VAR;}
 
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signal          { return PSIGNAL;}
 
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press           { return PRESS;}
 
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release         { return RELEASE;}
 
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halt            { return PHALT;}
 
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thread          { return PTHREAD;}
 
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{comment}       { lineno++;}
 
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{white}         {}
 
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{newline}       { lineno++;}
 
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{id}            { 
 
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                        yytext[strlen(yytext)-1]='\0';
 
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                        strcpy(yylval.string,yytext);
 
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                        return ID;
 
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                }
 
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{string}        {        
 
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                        yytext[strlen(yytext)-1]='\0';
 
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                        strcpy(yylval.string,yytext+1);
 
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                        return STRING; 
 
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                }
 
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{value}         { 
 
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                        strcpy(yylval.string,yytext);
 
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                        return INT;
 
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                }
 
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.               { return yytext[0];}
 
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%%
 
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int yywrap(void) {
 
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        return 1;
 
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}
 
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void yyerror(char *s) {
 
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        printf("Parse error(line %d):" , lineno);
 
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        printf("%s\n", s);
 
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}