40 lines
926 B
Text
40 lines
926 B
Text
%option yylineno
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%{
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#include "y.tab.h"
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int yycharno = 0;
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%}
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str \"([^\n]|\\\")+\"
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ws [ \t]+
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newline [\n]
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alpha [a-zA-Z]
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dig [0-9]
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float1 {dig}+[.]{dig}+
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int {dig}+
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float2 {float1}[eE][-+]?{dig}+
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float {float1}|{float2}
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number {int}|{float}
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var ([_]|{alpha})([_]|{alpha}|{dig})*
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%%
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{newline} {yylineno = yylineno + 1;return T_NEWLINE;}
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{ws} {yycharno = yycharno + yyleng;}
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{var} {yylval.strVal = strdup(yytext);
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yycharno = yycharno + yyleng;
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return T_VAR;}
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{number} {yylval.floatVal = atof(yytext);
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yycharno = yycharno + yyleng;
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return T_NUM;}
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"-" {yycharno += 1;return T_SUB;}
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"+" {yycharno += 1;return T_ADD;}
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"*" {yycharno += 1;return T_MUL;}
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"/" {yycharno += 1; return T_DIV;}
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"(" {yycharno += 1; return T_LPATH;}
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")" {yycharno += 1; return T_RPATH;}
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. {yycharno += 1;}
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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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