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use builtin operator associativity functionality
[ccc.git]
/
scan.l
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%option noinput
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%option nounput
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%{
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#include <stdio.h>
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#include "ast.h"
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#define YYSTYPE struct ast *
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#include "y.tab.h"
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extern YYSTYPE yylval;
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%}
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%%
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[0-9]+ { yylval = ast_int(atoi(yytext)); return INTEGER; }
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! return INVERSE;
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\|\| return BINOR;
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&& return BINAND;
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== return EQ;
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!= return NEQ;
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\<= return GEQ;
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\< return GE;
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>= return LEQ;
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> return LE;
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: return CONS;
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\+ return PLUS;
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- return MINUS;
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\* return TIMES;
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\/ return DIVIDE;
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% return MODULO;
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\^ return POWER;
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\( return BOPEN;
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\) return BCLOSE;
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\; return SEMICOLON;
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[ \n\t] ;
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%%