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34 lines
728 B
Plaintext
34 lines
728 B
Plaintext
/*
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* yymore.lex: An example of using yymore()
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* to good effect.
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*/
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%{
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#include <memory.h>
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void yyerror(char *message)
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{
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printf("Error: %s\n",message);
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}
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%}
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%x STRING
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%%
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\" yybegin(STRING);
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<STRING>[^\\\n"]* yymore();
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<STRING><<EOF>> yyerror("EOF in string."); yybegin(INITIAL);
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<STRING>\n yyerror("Unterminated string."); yybegin(INITIAL);
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<STRING>\\\n {
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bcopy(yytext,yytext+2,yyleng-2);
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yytext += 2; yyleng -= 2;
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yymore();
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}
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<STRING>\" {
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yyleng -= 1; yytext[yyleng] = '\0';
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printf("string = \"%s\"",yytext); yybegin(INITIAL);
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}
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%%
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