April 2002 Draft JavaScript 2.0 Formal Description Syntactic Grammar

Tuesday, February 26, 2002

This LALR(1) grammar describes the syntax of the JavaScript 2.0 proposal. The starting nonterminal is Program. See also the description of the grammar notation.

This document is also available as a Word 98 rtf file.

Terminals

General tokens: Identifier Number RegularExpression String VirtualSemicolon

Punctuation tokens: ! != !== % %= & && &&= &= ( ) * *= + ++ += , - -- -= . ... / /= : :: ; < << <<= <= = == === > >= >> >>= >>> >>>= ? [ ] ^ ^= ^^ ^^= { | |= || ||= } ~

Reserved words: abstract as break case catch class const continue default delete do else export extends false final finally for function if implements import in instanceof interface is namespace new null package private public return static super switch this throw true try typeof use var void while with

Future reserved words: debugger enum goto native protected synchronized throws transient volatile

Non-reserved words: exclude get include named set

Expressions

Identifiers

Qualified Identifiers

Unit Expressions

Primary Expressions

Function Expressions

Object Literals

Array Literals

Super Expressions

Postfix Expressions

Member Operators

Unary Operators

Multiplicative Operators

Additive Operators

Bitwise Shift Operators

Relational Operators

Equality Operators

Binary Bitwise Operators

Binary Logical Operators

Conditional Operator

Assignment Operators

Comma Expressions

Type Expressions

Statements

Empty Statement

Expression Statement

Super Statement

Block Statement

Labeled Statements

If Statement

Switch Statement

Do-While Statement

While Statement

For Statements

With Statement

Continue and Break Statements

Return Statement

Throw Statement

Try Statement

Directives

Attributes

Use Directive

Import Directive

Pragma

Definitions

Export Definition

Variable Definition

Simple Variable Definition

A SimpleVariableDefinition represents the subset of VariableDefinition expansions that may be used when the variable definition is used as a Substatement instead of a Directive in non-strict mode. In strict mode variable definitions may not be used as substatements.

Function Definition

Class Definition

Namespace Definition

Package Definition

Programs

Waldemar Horwat Last modified Tuesday, February 26, 2002