org.mozilla.javascript.tools.shell

Class Global

java.lang.Object

org.mozilla.javascript.ScriptableObject

org.mozilla.javascript.IdScriptableObject

org.mozilla.javascript.TopLevel

org.mozilla.javascript.ImporterTopLevel

org.mozilla.javascript.tools.shell.Global

All Implemented Interfaces:

java.io.Serializable, ConstProperties, DebuggableObject, IdFunctionCall, Scriptable, SymbolScriptable

public class Global
extends ImporterTopLevel

This class provides for sharing functions across multiple threads. This is of particular interest to server applications.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.mozilla.javascript.TopLevel

TopLevel.Builtins

Nested classes/interfaces inherited from class org.mozilla.javascript.ScriptableObject

ScriptableObject.KeyComparator

Field Summary

Fields inherited from class org.mozilla.javascript.ScriptableObject

CONST, DONTENUM, EMPTY, PERMANENT, READONLY, UNINITIALIZED_CONST

Fields inherited from interface org.mozilla.javascript.Scriptable

NOT_FOUND

Constructor Summary

Constructors

Constructor and Description
Global()
Global(Context cx)

Method Summary

Modifier and Type	Method and Description
static void	defineClass(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Load a Java class that defines a JavaScript object using the conventions outlined in ScriptableObject.defineClass.
static java.lang.Object	deserialize(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj)
static java.lang.Object	doctest(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Example: doctest("js> function f() {\n > return 3;\n > }\njs> f();\n3\n"); returns 2 (since 2 tests were executed).
static void	gc(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj)
ShellConsole	getConsole(java.nio.charset.Charset cs)
java.io.PrintStream	getErr()
java.io.InputStream	getIn()
java.io.PrintStream	getOut()
java.lang.String[]	getPrompts(Context cx)
static void	help(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Print a help message.
void	init(Context cx)
void	init(ContextFactory factory)
void	initQuitAction(QuitAction quitAction) Set the action to call from quit().
Require	installRequire(Context cx, java.util.List<java.lang.String> modulePath, boolean sandboxed)
boolean	isInitialized()
static void	load(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Load and execute a set of JavaScript source files.
static void	loadClass(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Load and execute a script compiled to a class file.
static java.lang.Object	print(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Print the string values of its arguments.
static void	quit(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Call embedding-specific quit action passing its argument as int32 exit code.
static java.lang.Object	readFile(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) The readFile reads the given file content and convert it to a string using the specified character coding or default character coding if explicit coding argument is not given.
static java.lang.Object	readline(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) The readline reads one line from the standard input.
static java.lang.Object	readUrl(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) The readUrl opens connection to the given URL, read all its data and converts them to a string using the specified character coding or default character coding if explicit coding argument is not given.
static java.lang.Object	runCommand(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Execute the specified command with the given argument and options as a separate process and return the exit status of the process.
int	runDoctest(Context cx, Scriptable scope, java.lang.String session, java.lang.String sourceName, int lineNumber)
static void	seal(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) The seal function seals all supplied arguments.
static void	serialize(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj)
void	setErr(java.io.PrintStream err)
void	setIn(java.io.InputStream in)
void	setOut(java.io.PrintStream out)
void	setSealedStdLib(boolean value)
static java.lang.Object	spawn(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) The spawn function runs a given function or script in a different thread.
static java.lang.Object	sync(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) The sync function creates a synchronized function (in the sense of a Java synchronized method) from an existing function.
static java.lang.Object	toint32(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Convert the argument to int32 number.
static double	version(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Get and set the language version.
static java.lang.Object	write(Context cx, Scriptable thisObj, java.lang.Object[] args, Function funObj) Print just as in "print," but without the trailing newline.

Methods inherited from class org.mozilla.javascript.ImporterTopLevel

execIdCall, findPrototypeId, get, getClassName, has, importPackage, init, initPrototypeId, initStandardObjects

Methods inherited from class org.mozilla.javascript.TopLevel

cacheBuiltins, getBuiltinCtor, getBuiltinCtor, getBuiltinPrototype, getBuiltinPrototype

Methods inherited from class org.mozilla.javascript.IdScriptableObject

activatePrototypeMap, addIdFunctionProperty, defaultGet, defaultHas, defaultPut, defineOwnProperty, delete, delete, exportAsJSClass, fillConstructorProperties, findInstanceIdInfo, findInstanceIdInfo, findPrototypeId, get, getAttributes, getAttributes, getInstanceIdName, getInstanceIdValue, getMaxInstanceId, getOwnPropertyDescriptor, has, hasPrototypeMap, incompatibleCallError, initPrototypeConstructor, initPrototypeMethod, initPrototypeMethod, initPrototypeMethod, initPrototypeValue, initPrototypeValue, instanceIdInfo, put, put, setAttributes, setInstanceIdAttributes, setInstanceIdValue

Methods inherited from class org.mozilla.javascript.ScriptableObject

applyDescriptorToAttributeBitset, associateValue, avoidObjectDetection, buildDataDescriptor, callMethod, callMethod, checkPropertyChange, checkPropertyDefinition, defineClass, defineClass, defineClass, defineConst, defineConstProperty, defineFunctionProperties, defineOwnProperties, defineOwnProperty, defineProperty, defineProperty, defineProperty, defineProperty, defineProperty, delete, deleteProperty, deleteProperty, ensureScriptable, ensureScriptableObject, ensureSymbolScriptable, equivalentValues, get, get, getAllIds, getArrayPrototype, getAssociatedValue, getAttributes, getAttributes, getAttributes, getClassPrototype, getDefaultValue, getDefaultValue, getExternalArrayData, getExternalArrayLength, getFunctionPrototype, getGeneratorFunctionPrototype, getGetterOrSetter, getIds, getObjectPrototype, getParentScope, getProperty, getProperty, getProperty, getPropertyIds, getPrototype, getSlot, getTopLevelScope, getTopScopeValue, getTypedProperty, getTypedProperty, getTypeOf, has, hasInstance, hasProperty, hasProperty, hasProperty, isAccessorDescriptor, isConst, isDataDescriptor, isEmpty, isExtensible, isFalse, isGenericDescriptor, isGetterOrSetter, isSealed, isTrue, preventExtensions, put, putConst, putConstProperty, putProperty, putProperty, putProperty, redefineProperty, sameValue, sealObject, setAttributes, setAttributes, setAttributes, setAttributes, setExternalArrayData, setGetterOrSetter, setParentScope, setPrototype, size

Methods inherited from class java.lang.Object

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

Constructor Detail

Global

public Global()

Global

public Global(Context cx)

Method Detail

isInitialized

public boolean isInitialized()

initQuitAction

public void initQuitAction(QuitAction quitAction)

Set the action to call from quit().

init

public void init(ContextFactory factory)

init

public void init(Context cx)

installRequire

public Require installRequire(Context cx,
                              java.util.List<java.lang.String> modulePath,
                              boolean sandboxed)

help

public static void help(Context cx,
                        Scriptable thisObj,
                        java.lang.Object[] args,
                        Function funObj)

Print a help message. This method is defined as a JavaScript function.

gc

public static void gc(Context cx,
                      Scriptable thisObj,
                      java.lang.Object[] args,
                      Function funObj)

print

public static java.lang.Object print(Context cx,
                                     Scriptable thisObj,
                                     java.lang.Object[] args,
                                     Function funObj)

Print the string values of its arguments. This method is defined as a JavaScript function. Note that its arguments are of the "varargs" form, which allows it to handle an arbitrary number of arguments supplied to the JavaScript function.

write

public static java.lang.Object write(Context cx,
                                     Scriptable thisObj,
                                     java.lang.Object[] args,
                                     Function funObj)

Print just as in "print," but without the trailing newline.

quit

public static void quit(Context cx,
                        Scriptable thisObj,
                        java.lang.Object[] args,
                        Function funObj)

Call embedding-specific quit action passing its argument as int32 exit code. This method is defined as a JavaScript function.

version

public static double version(Context cx,
                             Scriptable thisObj,
                             java.lang.Object[] args,
                             Function funObj)

Get and set the language version. This method is defined as a JavaScript function.

load

public static void load(Context cx,
                        Scriptable thisObj,
                        java.lang.Object[] args,
                        Function funObj)

Load and execute a set of JavaScript source files. This method is defined as a JavaScript function.

defineClass

public static void defineClass(Context cx,
                               Scriptable thisObj,
                               java.lang.Object[] args,
                               Function funObj)
                        throws java.lang.IllegalAccessException,
                               java.lang.InstantiationException,
                               java.lang.reflect.InvocationTargetException

Load a Java class that defines a JavaScript object using the conventions outlined in ScriptableObject.defineClass.

This method is defined as a JavaScript function.

Throws:

java.lang.IllegalAccessException - if access is not available to a reflected class member

java.lang.InstantiationException - if unable to instantiate the named class

java.lang.reflect.InvocationTargetException - if an exception is thrown during execution of methods of the named class

See Also:

ScriptableObject.defineClass(Scriptable,Class)

loadClass

public static void loadClass(Context cx,
                             Scriptable thisObj,
                             java.lang.Object[] args,
                             Function funObj)
                      throws java.lang.IllegalAccessException,
                             java.lang.InstantiationException

Load and execute a script compiled to a class file.

This method is defined as a JavaScript function. When called as a JavaScript function, a single argument is expected. This argument should be the name of a class that implements the Script interface, as will any script compiled by jsc.

Throws:

java.lang.IllegalAccessException - if access is not available to the class

java.lang.InstantiationException - if unable to instantiate the named class

serialize

public static void serialize(Context cx,
                             Scriptable thisObj,
                             java.lang.Object[] args,
                             Function funObj)
                      throws java.io.IOException

Throws:

java.io.IOException

deserialize

public static java.lang.Object deserialize(Context cx,
                                           Scriptable thisObj,
                                           java.lang.Object[] args,
                                           Function funObj)
                                    throws java.io.IOException,
                                           java.lang.ClassNotFoundException

Throws:

java.io.IOException

java.lang.ClassNotFoundException

getPrompts

public java.lang.String[] getPrompts(Context cx)

doctest

public static java.lang.Object doctest(Context cx,
                                       Scriptable thisObj,
                                       java.lang.Object[] args,
                                       Function funObj)

Example: doctest("js> function f() {\n > return 3;\n > }\njs> f();\n3\n"); returns 2 (since 2 tests were executed).

runDoctest

public int runDoctest(Context cx,
                      Scriptable scope,
                      java.lang.String session,
                      java.lang.String sourceName,
                      int lineNumber)

spawn

public static java.lang.Object spawn(Context cx,
                                     Scriptable thisObj,
                                     java.lang.Object[] args,
                                     Function funObj)

The spawn function runs a given function or script in a different thread. js> function g() { a = 7; } js> a = 3; 3 js> spawn(g) Thread[Thread-1,5,main] js> a 3

sync

public static java.lang.Object sync(Context cx,
                                    Scriptable thisObj,
                                    java.lang.Object[] args,
                                    Function funObj)

The sync function creates a synchronized function (in the sense of a Java synchronized method) from an existing function. The new function synchronizes on the the second argument if it is defined, or otherwise the this object of its invocation. js> var o = { f : sync(function(x) { print("entry"); Packages.java.lang.Thread.sleep(x*1000); print("exit"); })}; js> spawn(function() {o.f(5);}); Thread[Thread-0,5,main] entry js> spawn(function() {o.f(5);}); Thread[Thread-1,5,main] js> exit entry exit

runCommand

public static java.lang.Object runCommand(Context cx,
                                          Scriptable thisObj,
                                          java.lang.Object[] args,
                                          Function funObj)
                                   throws java.io.IOException

Execute the specified command with the given argument and options as a separate process and return the exit status of the process.

Usage:

 runCommand(command)
 runCommand(command, arg1, ..., argN)
 runCommand(command, arg1, ..., argN, options)
 

All except the last arguments to runCommand are converted to strings and denote command name and its arguments. If the last argument is a JavaScript object, it is an option object. Otherwise it is converted to string denoting the last argument and options objects assumed to be empty. The following properties of the option object are processed:

• args - provides an array of additional command arguments
• env - explicit environment object. All its enumerable properties define the corresponding environment variable names.
• input - the process input. If it is not java.io.InputStream, it is converted to string and sent to the process as its input. If not specified, no input is provided to the process.
• output - the process output instead of java.lang.System.out. If it is not instance of java.io.OutputStream, the process output is read, converted to a string, appended to the output property value converted to string and put as the new value of the output property.
• err - the process error output instead of java.lang.System.err. If it is not instance of java.io.OutputStream, the process error output is read, converted to a string, appended to the err property value converted to string and put as the new value of the err property.
• dir - the working direcotry to run the commands.

Throws:

java.io.IOException

seal

public static void seal(Context cx,
                        Scriptable thisObj,
                        java.lang.Object[] args,
                        Function funObj)

The seal function seals all supplied arguments.

readFile

public static java.lang.Object readFile(Context cx,
                                        Scriptable thisObj,
                                        java.lang.Object[] args,
                                        Function funObj)
                                 throws java.io.IOException

The readFile reads the given file content and convert it to a string using the specified character coding or default character coding if explicit coding argument is not given.

Usage:

 readFile(filePath)
 readFile(filePath, charCoding)
 

The first form converts file's context to string using the default character coding.

Throws:

java.io.IOException

readUrl

public static java.lang.Object readUrl(Context cx,
                                       Scriptable thisObj,
                                       java.lang.Object[] args,
                                       Function funObj)
                                throws java.io.IOException

The readUrl opens connection to the given URL, read all its data and converts them to a string using the specified character coding or default character coding if explicit coding argument is not given.

Usage:

 readUrl(url)
 readUrl(url, charCoding)
 

The first form converts file's context to string using the default charCoding.

Throws:

java.io.IOException

toint32

public static java.lang.Object toint32(Context cx,
                                       Scriptable thisObj,
                                       java.lang.Object[] args,
                                       Function funObj)

Convert the argument to int32 number.

getConsole

public ShellConsole getConsole(java.nio.charset.Charset cs)

getIn

public java.io.InputStream getIn()

setIn

public void setIn(java.io.InputStream in)

getOut

public java.io.PrintStream getOut()

setOut

public void setOut(java.io.PrintStream out)

getErr

public java.io.PrintStream getErr()

setErr

public void setErr(java.io.PrintStream err)

setSealedStdLib

public void setSealedStdLib(boolean value)

readline

public static java.lang.Object readline(Context cx,
                                        Scriptable thisObj,
                                        java.lang.Object[] args,
                                        Function funObj)
                                 throws java.io.IOException

The readline reads one line from the standard input. "Prompt" is optional.

Usage:

 readline(prompt)
 

Throws:

java.io.IOException