org.antlr.codegen

Class JavaScriptTarget

java.lang.Object

org.antlr.codegen.Target

org.antlr.codegen.JavaScriptTarget

public class JavaScriptTarget
extends Target

Field Summary

Fields inherited from class org.antlr.codegen.Target

targetCharValueEscape

Constructor Summary

Constructors

Constructor and Description
JavaScriptTarget()

Method Summary

Methods

Modifier and Type	Method and Description
String	encodeIntAsCharEscape(int v) Convert an int to a JavaScript Unicode character literal.
String	getTarget64BitStringFromValue(long word) Convert long to two 32-bit numbers separted by a comma.

Methods inherited from class org.antlr.codegen.Target

genRecognizerFile, genRecognizerHeaderFile, getMaxCharValue, getTargetCharLiteralFromANTLRCharLiteral, getTargetStringLiteralFromANTLRStringLiteral, getTargetStringLiteralFromString, getTargetStringLiteralFromString, getTokenTypeAsTargetLabel, isValidActionScope, performGrammarAnalysis, postProcessAction, useBaseTemplatesForSynPredFragments

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JavaScriptTarget

public JavaScriptTarget()

Method Detail

encodeIntAsCharEscape

public String encodeIntAsCharEscape(int v)

Convert an int to a JavaScript Unicode character literal. The current JavaScript spec (ECMA-262) doesn't provide for octal notation in String literals, although some implementations support it. This method overrides the parent class so that characters will always be encoded as Unicode literals (e.g. ).

Overrides:

encodeIntAsCharEscape in class Target

getTarget64BitStringFromValue

public String getTarget64BitStringFromValue(long word)

Convert long to two 32-bit numbers separted by a comma. JavaScript does not support 64-bit numbers, so we need to break the number into two 32-bit literals to give to the Bit. A number like 0xHHHHHHHHLLLLLLLL is broken into the following string: "0xLLLLLLLL, 0xHHHHHHHH" Note that the low order bits are first, followed by the high order bits. This is to match how the BitSet constructor works, where the bits are passed in in 32-bit chunks with low-order bits coming first. Note: stole the following two methods from the ActionScript target.

Overrides:

getTarget64BitStringFromValue in class Target