js_keywords.h

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// Copyright 2011 Google Inc. All Rights Reserved.

#ifndef PAGESPEED_KERNEL_JS_JS_KEYWORDS_H_
#define PAGESPEED_KERNEL_JS_JS_KEYWORDS_H_

#include "pagespeed/kernel/base/string_util.h"

namespace net_instaweb {
  class JsLexer;
}

namespace pagespeed {

class JsKeywords {
 public:
  enum Type {
    kNull,
    kTrue,
    kFalse,

    kBreak,
    kCase,
    kCatch,
    kConst,
    kDefault,
    kFinally,
    kFor,
    kInstanceof,
    kNew,
    kVar,
    kContinue,
    kFunction,
    kReturn,
    kVoid,
    kDelete,
    kIf,
    kThis,
    kDo,
    kWhile,
    kElse,
    kIn,
    kSwitch,
    kThrow,
    kTry,
    kTypeof,
    kWith,
    kDebugger,

    kClass,
    kEnum,
    kExport,
    kExtends,
    kImport,
    kSuper,

    kImplements,
    kInterface,
    kLet,
    kPackage,
    kPrivate,
    kProtected,
    kPublic,
    kStatic,
    kYield,

    kNotAKeyword,

    kComment,        
    kWhitespace,     
    kLineSeparator,  
    kSemiInsert,     
    kRegex,          
    kStringLiteral,  
    kNumber,         
    kOperator,       
    kIdentifier,     
    kEndOfInput,     
    kError           
  };

  static bool IsAKeyword(Type type) { return type < kNotAKeyword; }

  static bool CanKeywordPrecedeRegEx(const StringPiece& name);

  enum Flag {
    kNone,
    kIsValue,
    kIsReservedNonStrict,
    kIsReservedStrict,
    kCanPrecedeRegEx  
  };

  static Type Lookup(const StringPiece& name, Flag* flag);

  class Iterator {
   public:
    Iterator() : index_(-1) { Next(); }
    bool AtEnd() const;
    void Next();
    Type keyword() const;
    const char* name() const;

   private:
    int index_;

  };

 private:
  friend class net_instaweb::JsLexer;

  static int num_keywords();
};

}  

#endif