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|
%{
#include "buildparser.h"
#include "bu/string.h"
char *fstrdup( const Bu::String &s )
{
char *sRet = new char[s.getSize()+1];
memcpy( sRet, s.getStr(), s.getSize()+1 );
return sRet;
}
char *rstrdup( const char *sIn )
{
char *sRet = new char[strlen(sIn)+1];
strcpy( sRet, sIn );
return sRet;
}
void build_error( YYLTYPE *locp, yyscan_t yyscanner, BuildParser &bld, const char *msg );
Bu::String sBuf;
int iStrDepth = 0;
%}
%{
#define YY_USER_ACTION yylloc->last_column += yyleng;
%}
%x strdq
%x BlockComment
%option noyywrap nounput batch debug bison-bridge bison-locations reentrant
%option prefix="build_"
%option outfile="src/build.yy.c"
%option header-file="src/build.yy.h"
%%
\n+ {
yylloc->last_line += yyleng;
yylloc->first_line = yylloc->last_line;
yylloc->first_column = yylloc->last_column = 0;
}
[ \t\r]+ {
yylloc->first_line = yylloc->last_line;
yylloc->first_column = yylloc->last_column+1;
}
"#".* /* eol comment */
"//".* /* eol comment */
"/*" {
BEGIN( BlockComment );
}
<BlockComment>"*/" {
BEGIN( INITIAL );
}
<BlockComment>\n+ {
yylloc->last_column = -yyleng;
yylloc->last_line += yyleng;
}
<BlockComment>. { }
/*
<BlockComment>[^*\n/]+ { }
<BlockComment>"*"[^/\n]+ { }
<BlockComment>"*"|"/" { }
*/
[(){}[\],.;=<>!+*/-] return yytext[0];
"+=" return OP_ADDSETP;
"<<" return OP_ADDSETR;
"==" return OP_CMPEQUAL;
"!=" return OP_INEQUAL;
"<=" return OP_LTEQUAL;
">=" return OP_GTEQUAL;
"target" return TOK_TARGET;
"input" return TOK_INPUT;
"output" return TOK_OUTPUT;
"unset" return TOK_UNSET;
"set" return TOK_SET;
"condition" return TOK_CONDITION;
"requires" return TOK_REQUIRES;
"auto" return TOK_AUTO;
"config" return TOK_CONFIG;
"display" return TOK_DISPLAY;
"type" return TOK_TYPE;
"int" return TOK_INT;
"float" return TOK_FLOAT;
"bool" return TOK_BOOL;
"version" return TOK_VERSION;
"string" return TOK_STRING;
"default" return TOK_DEFAULT;
"allow" return TOK_ALLOW;
"rule" return TOK_RULE;
"action" return TOK_ACTION;
"profile" return TOK_PROFILE;
"if" return TOK_IF;
"then" return TOK_THEN;
"else" return TOK_ELSE;
"include" return TOK_INCLUDE;
"warning" return TOK_WARNING;
"error" return TOK_ERROR;
"notice" return TOK_NOTICE;
"cache" return TOK_CACHE;
"always" return TOK_ALWAYS;
"never" return TOK_NEVER;
"global" return TOK_GLOBAL;
"local" return TOK_LOCAL;
"for" return TOK_FOR;
"in" return TOK_IN;
"do" return TOK_DO;
"return" return TOK_RETURN;
"function" return TOK_FUNCTION;
"continue" return TOK_CONTINUE;
"break" return TOK_BREAK;
"value" return TOK_VALUE;
"all" return TOK_ALL;
"export" return TOK_EXPORT;
"tag" return TOK_TAG;
"null" return TOK_NULL;
"true" {
yylval->bVal = true;
return BOOL;
}
"false" {
yylval->bVal = false;
return BOOL;
}
[a-zA-Z_][a-zA-Z0-9_]*: {
yytext[yyleng-1] = '\0';
yylval->sVal = rstrdup( yytext );
return PROFILE;
}
[a-zA-Z_][a-zA-Z0-9_]* {
yylval->sVal = rstrdup( yytext );
if( b.isKeyword( yylval->sVal ) )
return KEYWORD;
else if( b.isCond( yylval->sVal ) )
return CONDITION;
return UNDEF;
}
-?([1-9][0-9]*)|(0) {
yylval->iVal = strtol( yytext, NULL, 10 );
return INT;
}
(0\.0+)|(-?(([1-9][0-9]*)|(0))\.[0-9]*) {
yylval->fVal = strtof( yytext, NULL );
return FLOAT;
}
\" {
BEGIN( strdq );
sBuf.clear();
iStrDepth = 0;
}
<strdq>[^\\\n\"$()]+ {
sBuf += yytext;
}
<strdq>\$\$ {
sBuf += "$$";
}
<strdq>\$\( {
iStrDepth++; // TODO: Should this really count depth? I dunno...
sBuf += "$(";
}
<strdq>\\\) sBuf += "\\)";
<strdq>\) {
if( iStrDepth > 0 )
iStrDepth--;
sBuf += ")";
}
<strdq>[$(] {
sBuf += yytext;
}
<strdq>\n {
build_error( yylloc, yyscanner, b, "newline encountered in string");
}
<strdq>\\n sBuf += "\n";
<strdq>\\t sBuf += "\t";
<strdq>\\r sBuf += "\r";
<strdq>\\b sBuf += "\b";
<strdq>\\f sBuf += "\f";
<strdq>\\\\ sBuf += "\\";
<strdq>\\\" sBuf += "\"";
<strdq>\\\' sBuf += "\'";
<strdq>\\\( sBuf += "(";
<strdq>\\\` sBuf += "`";
<strdq>\\. printf("Invalid escape sequence.\n");
<strdq>\"[ \t\r\n]*\" {/* Ignore spaces between strings. */}
<strdq>\" {
if( iStrDepth > 0 )
{
sBuf += "\"";
}
else
{
BEGIN( INITIAL );
yylval->sVal = fstrdup( sBuf );
return STRING;
}
}
<<EOF>> {
build_pop_buffer_state( yyscanner );
if( !YY_CURRENT_BUFFER )
yyterminate();
else
b.endInclude( yylloc );
}
. {
build_error( yylloc, yyscanner, b, "invalid character");
}
%%
|
