com.oracle.truffle.js.scriptengine

Class PlaceholderScriptEngine

java.lang.Object

javax.script.AbstractScriptEngine

com.oracle.truffle.js.scriptengine.PlaceholderScriptEngine

All Implemented Interfaces:

ScriptEngine

public final class PlaceholderScriptEngine
extends AbstractScriptEngine

ScriptEngine implementation returned by GraalJSEngineFactory when JavaScript support is not installed. Unfortunately, there is no JavaDoc-compliant way for ScriptEngineFactory to claim that it is not able to provide ScriptEngine (because of a missing dependency). Hence, we provide this minimal compliant implementation instead. An encounter of this engine is a sign of a misconfiguration. Users should not see this engine when JavaScript support is installed properly.

Field Summary

Fields inherited from class javax.script.AbstractScriptEngine

context

Fields inherited from interface javax.script.ScriptEngine

ARGV, ENGINE, ENGINE_VERSION, FILENAME, LANGUAGE, LANGUAGE_VERSION, NAME

Method Summary

Modifier and Type	Method and Description
Bindings	createBindings()
Object	eval(Reader reader, ScriptContext ctx)
Object	eval(String script, ScriptContext ctx)
ScriptEngineFactory	getFactory()
void	setBindings(Bindings bindings, int scope)

Methods inherited from class javax.script.AbstractScriptEngine

eval, eval, eval, eval, get, getBindings, getContext, getScriptContext, put, setContext

Methods inherited from class java.lang.Object

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

Method Detail

setBindings

public void setBindings(Bindings bindings,
                        int scope)

Specified by:

setBindings in interface ScriptEngine

Overrides:

setBindings in class AbstractScriptEngine

eval

public Object eval(String script,
                   ScriptContext ctx)
            throws ScriptException

Throws:

ScriptException

eval

public Object eval(Reader reader,
                   ScriptContext ctx)
            throws ScriptException

Throws:

ScriptException

createBindings

public Bindings createBindings()

getFactory

public ScriptEngineFactory getFactory()