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f34a0009dd
This makes test 15 pass and also dramatically simplifies the lexer. We were previously using a CONTROL state in the lexer to only emit SPACE tokens when on text lines. But that's not actually what we want. We need SPACE tokens in the replacement lists as well. Instead of a lexer state for this, we now simply set a "space_tokens" flag whenever we start constructing a pp_tokens list and clear the flag whenever we see a '#' introducing a directive. Much cleaner this way.
131 lines
2.5 KiB
Text
131 lines
2.5 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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yyextra->space_tokens = 0;
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return HASH_DEFINE_FUNC;
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}
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{HASH}define {
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yyextra->space_tokens = 0;
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return HASH_DEFINE_OBJ;
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}
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{HASH}undef {
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yyextra->space_tokens = 0;
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return HASH_UNDEF;
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}
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{HASH} {
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yyextra->space_tokens = 0;
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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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{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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if (yyextra->space_tokens) {
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yylval.str = xtalloc_strdup (yyextra, yytext);
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return SPACE;
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}
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}
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\n {
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return NEWLINE;
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}
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%%
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