2011-05-24 Oliver Hunt <oliver@apple.com>

2011-05-24  Oliver Hunt  <oliver@apple.com>

        Reviewed by Geoffrey Garen.

        Avoid creating unnecessary identifiers and strings in the syntax checker
        https://bugs.webkit.org/show_bug.cgi?id=61378

        Selectively tell the lexer that there are some places it does not need to
        do the real work of creating Identifiers for IDENT and STRING tokens.

        Make parseString and parseIdentifier templatized on whether they should
        do real work, or merely validate the tokens.

        SunSpider --parse-only reports ~5-8% win depending on hardware.

        * parser/ASTBuilder.h:
        (JSC::ASTBuilder::createDotAccess):
        * parser/JSParser.cpp:
        (JSC::JSParser::next):
        (JSC::JSParser::consume):
        (JSC::JSParser::parseVarDeclarationList):
        (JSC::JSParser::parseConstDeclarationList):
        (JSC::JSParser::parseExpression):
        (JSC::JSParser::parseAssignmentExpression):
        (JSC::JSParser::parseConditionalExpression):
        (JSC::JSParser::parseBinaryExpression):
        (JSC::JSParser::parseProperty):
        (JSC::JSParser::parseObjectLiteral):
        (JSC::JSParser::parseArrayLiteral):
        (JSC::JSParser::parseArguments):
        (JSC::JSParser::parseMemberExpression):
        * parser/Lexer.cpp:
        (JSC::Lexer::parseIdentifier):
        (JSC::Lexer::parseString):
        (JSC::Lexer::lex):
        * parser/Lexer.h:
        * parser/SyntaxChecker.h:
        (JSC::SyntaxChecker::createDotAccess):
        (JSC::SyntaxChecker::createProperty):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@87177 268f45cc-cd09-0410-ab3c-d52691b4dbfc