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67 lines
1.6 KiB
Text
67 lines
1.6 KiB
Text
%option yylineno
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%{
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#include "y.tab.h"
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#if 0
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#define RETURN(x) printf("TOK:%s\n",#x); return(x)
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#else
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#define RETURN return
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#endif
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long strtol();
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%}
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IDCHAR [a-zA-Z0-9_\-\.]
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NUMCHAR [0-9]
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S [ \t\n\r\f]+
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NAME [a-zA-Z]{IDCHAR}+
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NUM {NUMCHAR}+
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HEXNUM "0x"[0-9A-Za-z]+
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COMMENT "/*"("*"?[^/]+)*("*/")
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CODE "{@"[^@]+"@}"
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%%
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".." {RETURN(DOT_DOT_);}
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"enum" {RETURN(ENUM_);}
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"struct" {RETURN(STRUCT_);}
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"opaque" {mkname();RETURN(OPAQUE_);}
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"select" {RETURN(SELECT_);}
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"constant" {RETURN(CONSTANT_);}
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"digitally-signed" {/* Do nothing*/}
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"public-key-encrypted" {/* Do nothing*/}
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"case" {RETURN(CASE_);}
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{COMMENT} { /*Do nothing*/}
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{CODE} { strcpy(yylval.str,yytext); RETURN(CODE_);}
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{S} {/*do nothing*/}
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{NAME} {mkname();RETURN(NAME_);}
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{NUM} {yylval.val=atoi(yytext); RETURN(NUM_);}
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{HEXNUM} {yylval.val=strtol(yytext,0,16); RETURN(NUM_);}
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"{" { RETURN('{'); }
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"}" { RETURN('}'); }
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"(" { RETURN('('); }
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")" { RETURN(')'); }
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"[" { RETURN('['); }
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"]" { RETURN(']'); }
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"<" { RETURN('<'); }
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">" { RETURN('>'); }
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";" { RETURN(';'); }
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":" { RETURN(':'); }
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"," { RETURN(','); }
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"." { RETURN('.'); }
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"^" { RETURN('^'); }
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"-" { RETURN('-'); }
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"=" { RETURN('='); }
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. { fprintf(stderr,"Invalid input token: %s at %d!!!\n",yytext,yylineno);
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exit(1);
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}
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%%
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int mkname()
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{
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#if 0
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printf("%s\n",yytext);
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#endif
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strcpy(yylval.str,yytext);
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}
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