Changeset 31809 in webkit for trunk/JavaScriptCore/kjs/lexer.h

Timestamp:

Apr 11, 2008, 1:14:45 AM (17 years ago)

Author:

[email protected]

Message:

Reviewed by Geoff.

Generate a pure (re-entrant) parser with Bison.

No change on SunSpider.

• kjs/Parser.cpp: (KJS::Parser::parse):
• kjs/grammar.y:
• kjs/lexer.cpp: (kjsyylex): (KJS::Lexer::lex):
• kjs/lexer.h: Pass state as function arguments, instead of global data. Don't call lexer() as often as before, as this function is about to become slower due to thread-specific storage.

• kjs/function.cpp: (KJS::isStrWhiteSpace): Don't call isSeparatorSpace() for 8-bit characters, as these are already taken care of. This is a small speedup, compensating for a small slowdown caused by switching Bison mode.

File:

• trunk/JavaScriptCore/kjs/lexer.h (modified) (2 diffs)

trunk/JavaScriptCore/kjs/lexer.h

@@ -28 +28 @@
 #include <wtf/Vector.h>
 
+union YYSTYPE;
+struct YYLTYPE;
+
 namespace KJS {
 
@@ -36 +39 @@
   public:
     void setCode(int startingLineNumber, const UChar *c, unsigned int len);
-    int lex();
+    int lex(YYSTYPE* lvalp, YYLTYPE* llocp);
 
     int lineNo() const { return yylineno; }