bbb708717a
sequences of PUSHes to a single STACKADJUST followed by STOREs. This should dramatically improve code on stack-unfriendly architectures like MIPS.
67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
%{
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#include <stdbool.h>
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#include <stdint.h>
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#include "iburg.h"
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#include "y.tab.h"
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static int braces = 0;
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%}
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%option warn
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%option nodefault
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%option noyywrap
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%option yylineno
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%option debug
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%x QSTRING
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%x COMMENT
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%%
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<INITIAL>"\"" BEGIN(QSTRING);
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<QSTRING>"\"" BEGIN(INITIAL);
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<QSTRING>[%$][a-zA-Z_][a-zA_Z_0-9]+(\.[0-9]+)? {
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yylval.string = strdup(yytext);
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return QFRAGMENT;
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}
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<QSTRING>[^\r\n%$"]+ {
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yylval.string = strdup(yytext);
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return QFRAGMENT;
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}
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<QSTRING>. yyerror("bad string input '%s' at line %d\n", yytext, yylineno);
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<INITIAL>"/*" BEGIN(COMMENT);
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<COMMENT>"*/" BEGIN(INITIAL);
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<COMMENT>[^*]* ;
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<COMMENT>"*" ;
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"DECLARATIONS" return DECLARATIONS;
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"PATTERNS" return PATTERNS;
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"REGISTERS" return REGISTERS;
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"OPTIONS" return OPTIONS;
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"aliases" return ALIASES;
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"corrupted" return CORRUPTED;
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"cost" return COST;
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"emit" return EMIT;
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"fragment" return FRAGMENT;
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"named" return NAMED;
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"prefers" return PREFERS;
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"preserved" return PRESERVED;
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"when" return WHEN;
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"with" return WITH;
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"==" return EQUALS;
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"!=" return NOTEQUALS;
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"//"[^\n]*\n ;
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[A-Za-z_][A-Za-z0-9_]* { yylval.string = strdup(yytext); return ID; }
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-?[0-9]+ { yylval.n = atoi(yytext); return INT; }
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-?0x[0-9a-fA-F]+ { yylval.n = strtol(yytext, NULL, 0); return INT; }
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[ \t\r\n]* ;
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. return yytext[0];
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%%
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/* vim: set sw=4 ts=4 expandtab : */
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