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%{
# include <string>
# include "builder.h"
# include "build.tab.h"
# include "stringrep.h"
std::string strbuf;
%}
%x regexp
%x strsq
%x strdq
%x comment
%option noyywrap nounput batch debug
%{
//# define YY_USER_ACTION yylloc->columns (yyleng);
%}
%%
[,:=] return yytext[0];
"+=" return TOK_ADDSET;
"default" return TOK_DEFAULT;
"action" return TOK_ACTION;
"create" return TOK_CREATE;
"file" return TOK_FILE;
"from" return TOK_FROM;
"files" return TOK_FILES;
"in" return TOK_IN;
"using" return TOK_USING;
"rule" return TOK_RULE;
"requires" return TOK_REQUIRES;
"for" return TOK_FOR;
"set" return TOK_SET;
"matches" return TOK_MATCHES;
"all" return TOK_ALL;
"one" return TOK_ONE;
"perform" return TOK_PERFORM;
"produces" return TOK_PRODUCES;
"command" return TOK_COMMAND;
"check" return TOK_CHECK;
"..."\n /* elipsis line continuation */
\n+ return TOK_EOL;
[ \t\r]* /* whitespace */
"/" {
BEGIN( regexp );
strbuf = "";
}
<regexp>[^\n/]* strbuf += yytext;
<regexp>"/" {
BEGIN( INITIAL );
yylval->strval = stringdup( strbuf.c_str() );
return REGEXP;
}
"#".* /* single line comment */
[^ \t\r\n\'\":=,/][^ \t\r\n\'\":=,]* {
yylval->strval = stringdup( yytext );
return STRING;
}
\" {
BEGIN( strdq );
strbuf = "";
}
\' {
BEGIN( strsq );
strbuf = "";
}
<strdq>[^\\\n\"]+ {
strbuf += yytext;
}
<strsq>[^\\\n\']+ {
strbuf += yytext;
}
<strdq,strsq>\\n strbuf += "\n";
<strdq,strsq>\\t strbuf += "\t";
<strdq,strsq>\\r strbuf += "\r";
<strdq,strsq>\\b strbuf += "\b";
<strdq,strsq>\\f strbuf += "\f";
<strdq>\" {
BEGIN( INITIAL );
yylval->strval = stringdup( strbuf.c_str() );
return STRING;
}
<strsq>\' {
BEGIN( INITIAL );
yylval->strval = stringdup( strbuf.c_str() );
return STRING;
}
%%
void Builder::scanBegin()
{
yy_flex_debug = false;
if( !(yyin = fopen( file.c_str(), "r" )) )
fprintf( stderr, "cannot open %s\n", file.c_str() );
}
void Builder::scanEnd()
{
fclose( yyin );
}
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