0ab48ad0d2
Many thanks to Tom Fogal for the initial patch. cmr=v1.7.4:reviewer=rhc:subject=Fix annoying flex warnings This commit was SVN r29904.
142 строки
4.2 KiB
C
142 строки
4.2 KiB
C
%option nounput
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%option noinput
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%{ /* -*- C -*- */
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#include "opal_config.h"
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#include <stdio.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "coll_ml_lex.h"
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BEGIN_C_DECLS
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/*
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* local functions
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*/
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static int coll_ml_config_yywrap(void);
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END_C_DECLS
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/*
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* global variables
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*/
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int coll_ml_config_yynewlines = 1;
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bool coll_ml_config_parse_done = false;
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char *coll_ml_config_string = NULL;
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%}
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WHITE [\f\t\v ]
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CHAR [A-Za-z0-9_\-\.]
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NAME_CHAR [A-Za-z0-9_\-\.\\\/]
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%x comment
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%x section_name
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%x collective_name
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%x section_end
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%x collective_end
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%x value
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%%
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{WHITE}*\n { ++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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#.*\n { ++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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"//".*\n { ++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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"/*" { BEGIN(comment);
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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<comment>[^*\n]* ; /* Eat up non '*'s */
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<comment>"*"+[^*/\n]* ; /* Eat '*'s not followed by a '/' */
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<comment>\n { ++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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<comment>"*"+"/" { BEGIN(INITIAL); /* Done with block comment */
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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{WHITE}*\[{WHITE}* { BEGIN(collective_name); }
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<collective_name>({NAME_CHAR}|{WHITE})*{NAME_CHAR}/{WHITE}*\] {
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BEGIN(collective_end);
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return COLL_ML_CONFIG_PARSE_COLLECTIVE; }
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<collective_name>\n { ++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_ERROR; }
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<collective_name>. { return COLL_ML_CONFIG_PARSE_ERROR; }
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<collective_end>{WHITE}*\]{WHITE}*\n {
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BEGIN(INITIAL);
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++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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{WHITE}*\<{WHITE}* { BEGIN(section_name); }
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<section_name>({NAME_CHAR}|{WHITE})*{NAME_CHAR}/{WHITE}*\> {
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BEGIN(section_end);
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return COLL_ML_CONFIG_PARSE_SECTION; }
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<section_name>\n { ++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_ERROR; }
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<section_name>. { return COLL_ML_CONFIG_PARSE_ERROR; }
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<section_end>{WHITE}*\>{WHITE}*\n {
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BEGIN(INITIAL);
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++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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{WHITE}*"="{WHITE}* { BEGIN(value);
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return COLL_ML_CONFIG_PARSE_EQUAL; }
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{WHITE}+ ; /* whitespace */
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{CHAR}+ { return COLL_ML_CONFIG_PARSE_SINGLE_WORD; }
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<value>{WHITE}*\n { BEGIN(INITIAL);
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++coll_ml_config_yynewlines;
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return COLL_ML_CONFIG_PARSE_NEWLINE; }
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<value>[^\n]*[^\t \n]/[\t ]* {
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return COLL_ML_CONFIG_PARSE_VALUE; }
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. { return COLL_ML_CONFIG_PARSE_ERROR; }
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%%
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/* Old flex (2.5.4a? and older) does not define a destroy function */
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#if !defined(YY_FLEX_SUBMINOR_VERSION)
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#define YY_FLEX_SUBMINOR_VERSION 0
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#endif
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#if (YY_FLEX_MAJOR_VERSION < 2) || (YY_FLEX_MAJOR_VERSION == 2 && (YY_FLEX_MINOR_VERSION < 5 || (YY_FLEX_MINOR_VERSION == 5 && YY_FLEX_SUBMINOR_VERSION < 5)))
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int coll_ml_config_yylex_destroy(void)
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{
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if (NULL != YY_CURRENT_BUFFER) {
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yy_delete_buffer(YY_CURRENT_BUFFER);
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#if defined(YY_CURRENT_BUFFER_LVALUE)
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YY_CURRENT_BUFFER_LVALUE = NULL;
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#else
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YY_CURRENT_BUFFER = NULL;
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#endif /* YY_CURRENT_BUFFER_LVALUE */
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}
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return YY_NULL;
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}
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#endif
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static int coll_ml_config_yywrap(void)
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{
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coll_ml_config_parse_done = true;
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return 1;
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}
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/*
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* Ensure that we have a valid yybuffer to use. Specifically, if this
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* scanner is invoked a second time, finish_parsing() (above) will
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* have been executed, and the current buffer will have been freed.
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* Flex doesn't recognize this fact because as far as it's concerned,
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* its internal state was already initialized, so it thinks it should
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* have a valid buffer. Hence, here we ensure to give it a valid
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* buffer.
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*/
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int coll_ml_config_init_buffer(FILE *file)
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{
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YY_BUFFER_STATE buf = yy_create_buffer(file, YY_BUF_SIZE);
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yy_switch_to_buffer(buf);
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return 0;
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}
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