org.xwt.js
Class JS

java.lang.Object
  org.xwt.js.JS

Direct Known Subclasses:

JS.Graft, JS.Obj, Res

public abstract class JS

extends java.lang.Object

The public API for the JS engine. JS itself is actually a class implementing the absolute minimal amount of functionality for an Object which can be manipulated by JavaScript code. The static methods, fields, and inner classes of JS define the publicly visible API for the XWT JavaScript engine; code outside this package should never depend on anything not defined in this file.

Nested Class Summary

static class	JS.Array The publicly-visible face of JavaScript Array objects
static class	JS.Callable anything that is callable with the () operator and wasn't compiled from JS code
static class	JS.Context encapsulates the state of a JavaScript "thread" (ie stack)
static class	JS.Exn An exception which can be thrown and caught by JavaScript code
static class	JS.GlobalScope a scope that is populated with js objects and functions normally found in the global scope
static class	JS.Graft the result of a graft
static class	JS.Obj A sensible implementation of the abstract methods in the JS class
static class	JS.Scope Any object which becomes part of the scope chain must support this interface
static class	JS.TailCall

Constructor Summary

JS()

Method Summary

java.lang.Object	callMethod(java.lang.Object method, JS.Array args, boolean checkOnly)
boolean	coerceToBoolean()
java.lang.Number	coerceToNumber()
java.lang.String	coerceToString()
abstract java.lang.Object	get(java.lang.Object key)
abstract java.lang.Object[]	keys()
static Function	parse(java.lang.String sourceName, int firstLine, java.io.Reader sourceCode) parse and compile a function
abstract java.lang.Object	put(java.lang.Object key, java.lang.Object val)
static boolean	toBoolean(java.lang.Object o) coerce an object to a Boolean
static double	toDouble(java.lang.Object o) coerce an object to a Double
static int	toInt(java.lang.Object o) coerce an object to an Int
static long	toLong(java.lang.Object o) coerce an object to a Long
static java.lang.Number	toNumber(java.lang.Object o) coerce an object to a Number
static java.lang.String	toString(java.lang.Object o) coerce an object to a String
java.lang.String	typeName()

Methods inherited from class java.lang.Object

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

Constructor Detail

JS

public JS()

Method Detail

parse

public static Function parse(java.lang.String sourceName,
                             int firstLine,
                             java.io.Reader sourceCode)
                      throws java.io.IOException

parse and compile a function

Throws:

java.io.IOException

toBoolean

public static boolean toBoolean(java.lang.Object o)

coerce an object to a Boolean

toLong

public static long toLong(java.lang.Object o)

coerce an object to a Long

toInt

public static int toInt(java.lang.Object o)

coerce an object to an Int

toDouble

public static double toDouble(java.lang.Object o)

coerce an object to a Double

toNumber

public static java.lang.Number toNumber(java.lang.Object o)

coerce an object to a Number

toString

public static java.lang.String toString(java.lang.Object o)

coerce an object to a String

get

public abstract java.lang.Object get(java.lang.Object key)
                              throws JS.Exn

Throws:

JS.Exn

put

public abstract java.lang.Object put(java.lang.Object key,
                                     java.lang.Object val)
                              throws JS.Exn

Throws:

JS.Exn

keys

public abstract java.lang.Object[] keys()

callMethod

public java.lang.Object callMethod(java.lang.Object method,
                                   JS.Array args,
                                   boolean checkOnly)
                            throws JS.Exn

Throws:

JS.Exn

coerceToNumber

public java.lang.Number coerceToNumber()

coerceToString

public java.lang.String coerceToString()

coerceToBoolean

public boolean coerceToBoolean()

typeName

public java.lang.String typeName()