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3ff8167084
This is a fresh start with a much simpler approach for the flex/bison portions of the preprocessor. This isn't functional yet, (produces no output), but can at least read all of our test cases without any parse errors. The grammar here is based on the grammar provided for the preprocessor in the C99 specification.
122 lines
2.3 KiB
Text
122 lines
2.3 KiB
Text
%{
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/*
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* Copyright © 2010 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "glcpp.h"
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#include "glcpp-parse.h"
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%}
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%option reentrant noyywrap
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%option extra-type="glcpp_parser_t *"
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SPACE [[:space:]]
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NONSPACE [^[:space:]]
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NEWLINE [\n]
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HSPACE [ \t]
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HASH ^{HSPACE}*#{HSPACE}*
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IDENTIFIER [_a-zA-Z][_a-zA-Z0-9]*
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PUNCTUATION [][(){}.&*~!/%<>^|;,+-]
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OTHER [^][(){}.&*~!/%<>^|;,=#[:space:]+-]+
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DECIMAL_INTEGER [1-9][0-9]*[uU]?
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OCTAL_INTEGER 0[0-7]*[uU]?
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HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]?
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%%
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{HASH}define{HSPACE}+/{IDENTIFIER}"(" {
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return HASH_DEFINE_FUNC;
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}
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{HASH}define {
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return HASH_DEFINE_OBJ;
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}
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{HASH}undef {
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return HASH_UNDEF;
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}
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{HASH} {
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return HASH;
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}
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{IDENTIFIER} {
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yylval.str = xtalloc_strdup (yyextra, yytext);
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return IDENTIFIER;
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}
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"<<" {
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return LEFT_SHIFT;
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}
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">>" {
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return RIGHT_SHIFT;
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}
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"<=" {
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return LESS_OR_EQUAL;
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}
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">=" {
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return GREATER_OR_EQUAL;
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}
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"==" {
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return EQUAL;
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}
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"!=" {
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return NOT_EQUAL;
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}
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"&&" {
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return AND;
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}
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"||" {
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return OR;
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}
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"##" {
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return PASTE;
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}
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{PUNCTUATION} {
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return yytext[0];
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}
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\n {
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return NEWLINE;
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}
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{OTHER} {
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yylval.str = xtalloc_strdup (yyextra, yytext);
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return OTHER;
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}
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{HSPACE}+
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%%
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