81 lines
1.6 KiB
Plaintext
81 lines
1.6 KiB
Plaintext
/*
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* The scanner definition for COOL.
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*/
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/*
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* Stuff enclosed in %{ %} in the first section is copied verbatim to the
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* output, so headers and global definitions are placed here to be visible
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* to the code in the file. Don't remove anything that was here initially
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*/
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%{
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#include <cool-parse.h>
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#include <stringtab.h>
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#include <utilities.h>
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/* The compiler assumes these identifiers. */
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#define yylval cool_yylval
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#define yylex cool_yylex
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/* Max size of string constants */
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#define MAX_STR_CONST 1025
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#define YY_NO_UNPUT /* keep g++ happy */
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extern FILE *fin; /* we read from this file */
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/* define YY_INPUT so we read from the FILE fin:
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* This change makes it possible to use this scanner in
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* the Cool compiler.
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*/
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#undef YY_INPUT
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#define YY_INPUT(buf,result,max_size) \
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if ( (result = fread( (char*)buf, sizeof(char), max_size, fin)) < 0) \
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YY_FATAL_ERROR( "read() in flex scanner failed");
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char string_buf[MAX_STR_CONST]; /* to assemble string constants */
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char *string_buf_ptr;
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extern int curr_lineno;
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extern int verbose_flag;
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extern YYSTYPE cool_yylval;
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/*
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* Add Your own definitions here
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*/
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%}
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/*
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* Define names for regular expressions here.
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*/
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DARROW =>
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%%
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/*
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* Nested comments
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*/
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/*
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* The multiple-character operators.
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*/
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{DARROW} { return (DARROW); }
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/*
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* Keywords are case-insensitive except for the values true and false,
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* which must begin with a lower-case letter.
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*/
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/*
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* String constants (C syntax)
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* Escape sequence \c is accepted for all characters c. Except for
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* \n \t \b \f, the result is c.
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*
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*/
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%%
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