token.java

java中比较著名的js引擎当属mozilla开源的rhino

        BREAK          = 116, // break keyword
        CONTINUE       = 117, // continue keyword
        VAR            = 118, // var keyword
        WITH           = 119, // with keyword
        CATCH          = 120, // catch keyword
        FINALLY        = 121, // finally keyword
        VOID           = 122, // void keyword
        RESERVED       = 123, // reserved keywords

        EMPTY          = 124,

        /* types used for the parse tree - these never get returned
         * by the scanner.
         */

        BLOCK          = 125, // statement block
        LABEL          = 126, // label
        TARGET         = 127,
        LOOP           = 128,
        EXPR_VOID      = 129, // expression statement in functions
        EXPR_RESULT    = 130, // expression statement in scripts
        JSR            = 131,
        SCRIPT         = 132, // top-level node for entire script
        TYPEOFNAME     = 133, // for typeof(simple-name)
        USE_STACK      = 134,
        SETPROP_OP     = 135, // x.y op= something
        SETELEM_OP     = 136, // x[y] op= something
        LOCAL_BLOCK    = 137,
        SET_REF_OP     = 138, // *reference op= something

        // For XML support:
        DOTDOT         = 139,  // member operator (..)
        COLONCOLON     = 140,  // namespace::name
        XML            = 141,  // XML type
        DOTQUERY       = 142,  // .() -- e.g., x.emps.emp.(name == "terry")
        XMLATTR        = 143,  // @
        XMLEND         = 144,

        // Optimizer-only-tokens
        TO_OBJECT      = 145,
        TO_DOUBLE      = 146,

        LAST_TOKEN     = 146;

    public static String name(int token)
    {
        if (!printNames) {
            return String.valueOf(token);
        }
        switch (token) {
          case ERROR:           return "ERROR";
          case EOF:             return "EOF";
          case EOL:             return "EOL";
          case ENTERWITH:       return "ENTERWITH";
          case LEAVEWITH:       return "LEAVEWITH";
          case RETURN:          return "RETURN";
          case GOTO:            return "GOTO";
          case IFEQ:            return "IFEQ";
          case IFNE:            return "IFNE";
          case SETNAME:         return "SETNAME";
          case BITOR:           return "BITOR";
          case BITXOR:          return "BITXOR";
          case BITAND:          return "BITAND";
          case EQ:              return "EQ";
          case NE:              return "NE";
          case LT:              return "LT";
          case LE:              return "LE";
          case GT:              return "GT";
          case GE:              return "GE";
          case LSH:             return "LSH";
          case RSH:             return "RSH";
          case URSH:            return "URSH";
          case ADD:             return "ADD";
          case SUB:             return "SUB";
          case MUL:             return "MUL";
          case DIV:             return "DIV";
          case MOD:             return "MOD";
          case NOT:             return "NOT";
          case BITNOT:          return "BITNOT";
          case POS:             return "POS";
          case NEG:             return "NEG";
          case NEW:             return "NEW";
          case DELPROP:         return "DELPROP";
          case TYPEOF:          return "TYPEOF";
          case GETPROP:         return "GETPROP";
          case SETPROP:         return "SETPROP";
          case GETELEM:         return "GETELEM";
          case SETELEM:         return "SETELEM";
          case CALL:            return "CALL";
          case NAME:            return "NAME";
          case NUMBER:          return "NUMBER";
          case STRING:          return "STRING";
          case NULL:            return "NULL";
          case THIS:            return "THIS";
          case FALSE:           return "FALSE";
          case TRUE:            return "TRUE";
          case SHEQ:            return "SHEQ";
          case SHNE:            return "SHNE";
          case REGEXP:          return "OBJECT";
          case BINDNAME:        return "BINDNAME";
          case THROW:           return "THROW";
          case RETHROW:         return "RETHROW";
          case IN:              return "IN";
          case INSTANCEOF:      return "INSTANCEOF";
          case LOCAL_LOAD:      return "LOCAL_LOAD";
          case GETVAR:          return "GETVAR";
          case SETVAR:          return "SETVAR";
          case CATCH_SCOPE:     return "CATCH_SCOPE";
          case ENUM_INIT_KEYS:  return "ENUM_INIT_KEYS";
          case ENUM_INIT_VALUES:  return "ENUM_INIT_VALUES";
          case ENUM_NEXT:       return "ENUM_NEXT";
          case ENUM_ID:         return "ENUM_ID";
          case THISFN:          return "THISFN";
          case RETURN_RESULT:   return "RETURN_RESULT";
          case ARRAYLIT:        return "ARRAYLIT";
          case OBJECTLIT:       return "OBJECTLIT";
          case GET_REF:         return "GET_REF";
          case SET_REF:         return "SET_REF";
          case DEL_REF:         return "DEL_REF";
          case REF_CALL:        return "REF_CALL";
          case REF_SPECIAL:     return "REF_SPECIAL";
          case DEFAULTNAMESPACE:return "DEFAULTNAMESPACE";
          case ESCXMLTEXT:      return "ESCXMLTEXT";
          case ESCXMLATTR:      return "ESCXMLATTR";
          case REF_MEMBER:      return "REF_MEMBER";
          case REF_NS_MEMBER:   return "REF_NS_MEMBER";
          case REF_NAME:        return "REF_NAME";
          case REF_NS_NAME:     return "REF_NS_NAME";
          case TRY:             return "TRY";
          case SEMI:            return "SEMI";
          case LB:              return "LB";
          case RB:              return "RB";
          case LC:              return "LC";
          case RC:              return "RC";
          case LP:              return "LP";
          case RP:              return "RP";
          case COMMA:           return "COMMA";
          case ASSIGN:          return "ASSIGN";
          case ASSIGN_BITOR:    return "ASSIGN_BITOR";
          case ASSIGN_BITXOR:   return "ASSIGN_BITXOR";
          case ASSIGN_BITAND:   return "ASSIGN_BITAND";
          case ASSIGN_LSH:      return "ASSIGN_LSH";
          case ASSIGN_RSH:      return "ASSIGN_RSH";
          case ASSIGN_URSH:     return "ASSIGN_URSH";
          case ASSIGN_ADD:      return "ASSIGN_ADD";
          case ASSIGN_SUB:      return "ASSIGN_SUB";
          case ASSIGN_MUL:      return "ASSIGN_MUL";
          case ASSIGN_DIV:      return "ASSIGN_DIV";
          case ASSIGN_MOD:      return "ASSIGN_MOD";
          case HOOK:            return "HOOK";
          case COLON:           return "COLON";
          case OR:              return "OR";
          case AND:             return "AND";
          case INC:             return "INC";
          case DEC:             return "DEC";
          case DOT:             return "DOT";
          case FUNCTION:        return "FUNCTION";
          case EXPORT:          return "EXPORT";
          case IMPORT:          return "IMPORT";
          case IF:              return "IF";
          case ELSE:            return "ELSE";
          case SWITCH:          return "SWITCH";
          case CASE:            return "CASE";
          case DEFAULT:         return "DEFAULT";
          case WHILE:           return "WHILE";
          case DO:              return "DO";
          case FOR:             return "FOR";
          case BREAK:           return "BREAK";
          case CONTINUE:        return "CONTINUE";
          case VAR:             return "VAR";
          case WITH:            return "WITH";
          case CATCH:           return "CATCH";
          case FINALLY:         return "FINALLY";
          case RESERVED:        return "RESERVED";
          case EMPTY:           return "EMPTY";
          case BLOCK:           return "BLOCK";
          case LABEL:           return "LABEL";
          case TARGET:          return "TARGET";
          case LOOP:            return "LOOP";
          case EXPR_VOID:       return "EXPR_VOID";
          case EXPR_RESULT:     return "EXPR_RESULT";
          case JSR:             return "JSR";
          case SCRIPT:          return "SCRIPT";
          case TYPEOFNAME:      return "TYPEOFNAME";
          case USE_STACK:       return "USE_STACK";
          case SETPROP_OP:      return "SETPROP_OP";
          case SETELEM_OP:      return "SETELEM_OP";
          case LOCAL_BLOCK:     return "LOCAL_BLOCK";
          case SET_REF_OP:      return "SET_REF_OP";
          case DOTDOT:          return "DOTDOT";
          case COLONCOLON:      return "COLONCOLON";
          case XML:             return "XML";
          case DOTQUERY:        return "DOTQUERY";
          case XMLATTR:         return "XMLATTR";
          case XMLEND:          return "XMLEND";
          case TO_OBJECT:       return "TO_OBJECT";
          case TO_DOUBLE:       return "TO_DOUBLE";
        }

        // Token without name
        throw new IllegalStateException(String.valueOf(token));
    }
}