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author | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:07:37 +0000 |
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committer | lresende <lresende@13f79535-47bb-0310-9956-ffa450edef68> | 2009-11-11 23:07:37 +0000 |
commit | 9f395ebf3ec27f89c8dc63137bc99c8d6b0cff6d (patch) | |
tree | 34231d72966aa918e80eea15602b6870d8b21641 /branches/sca-java-1.2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java | |
parent | 07b7dfd1a70ba222b899d9813f8c449dbf3b785f (diff) |
Moving 1.x branches
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@835125 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'branches/sca-java-1.2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java')
-rw-r--r-- | branches/sca-java-1.2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java | 467 |
1 files changed, 0 insertions, 467 deletions
diff --git a/branches/sca-java-1.2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java b/branches/sca-java-1.2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java deleted file mode 100644 index ebbe14abd8..0000000000 --- a/branches/sca-java-1.2/modules/implementation-script/src/main/java/org/apache/tuscany/sca/implementation/script/engines/TuscanyJRubyScriptEngine.java +++ /dev/null @@ -1,467 +0,0 @@ -/* -* Copyright (c) 2006, Sun Microsystems, Inc. -* All rights reserved. -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions are met: -* -* - Redistributions of source code must retain the above copyright notice, this -* list of conditions and the following disclaimer. -* -* - Redistributions in binary form must reproduce the above copyright notice, -* this list of conditions and the following disclaimer in the documentation -* and/or other materials provided with the distribution. -* -* - Neither the name of the Sun Microsystems, Inc. nor the names of -* contributors may be used to endorse or promote products derived from this -* software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND -* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED -* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A -* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE -* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY -* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF -* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE -* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH -* DAMAGE. -*/ -package org.apache.tuscany.sca.implementation.script.engines; - -import java.io.File; -import java.io.Reader; -import java.lang.reflect.InvocationHandler; -import java.lang.reflect.Method; -import java.lang.reflect.Proxy; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Collections; -import java.util.Iterator; -import java.util.List; - -import javax.script.AbstractScriptEngine; -import javax.script.Bindings; -import javax.script.Compilable; -import javax.script.CompiledScript; -import javax.script.Invocable; -import javax.script.ScriptContext; -import javax.script.ScriptEngine; -import javax.script.ScriptEngineFactory; -import javax.script.ScriptException; -import javax.script.SimpleBindings; - -import org.jruby.Ruby; -import org.jruby.RubyException; -import org.jruby.ast.Node; -import org.jruby.exceptions.RaiseException; -import org.jruby.internal.runtime.GlobalVariable; -import org.jruby.internal.runtime.GlobalVariables; -import org.jruby.internal.runtime.ReadonlyAccessor; -import org.jruby.javasupport.Java; -import org.jruby.javasupport.JavaObject; -import org.jruby.javasupport.JavaUtil; -import org.jruby.javasupport.bsf.JRubyEngine; -import org.jruby.runtime.Block; -import org.jruby.runtime.IAccessor; -import org.jruby.runtime.builtin.IRubyObject; - -import com.sun.script.jruby.JRubyScriptEngineFactory; - -/* - * This class is a copy of the class com.sun.script.ruby.JRubyScriptEngine with some minor modifications - * to work around problems with Tuscany setting SCA properties and references as global variable in JRuby - * Should only need it temporarily till a new BSF release fixes it. - */ -@SuppressWarnings("unchecked") -public class TuscanyJRubyScriptEngine extends AbstractScriptEngine - implements Compilable, Invocable { - - // my factory, may be null - private ScriptEngineFactory factory; - private Ruby runtime; - - public TuscanyJRubyScriptEngine() { - init(System.getProperty("com.sun.script.jruby.loadpath")); - } - - public TuscanyJRubyScriptEngine(String loadPath) { - init(loadPath); - } - - // my implementation for CompiledScript - private class JRubyCompiledScript extends CompiledScript { - // my compiled code - private Node node; - - JRubyCompiledScript (Node node) { - this.node = node; - } - - @Override - public ScriptEngine getEngine() { - return TuscanyJRubyScriptEngine.this; - } - - @Override - public Object eval(ScriptContext ctx) throws ScriptException { - return evalNode(node, ctx); - } - } - - // Compilable methods - public CompiledScript compile(String script) - throws ScriptException { - Node node = compileScript(script, context); - return new JRubyCompiledScript(node); - } - - public CompiledScript compile (Reader reader) - throws ScriptException { - Node node = compileScript(reader, context); - return new JRubyCompiledScript(node); - } - - // Invocable methods - public Object invokeFunction(String name, Object[] args) - throws ScriptException { - return invokeImpl(null, name, args, Object.class); - } - - public Object invokeMethod(Object obj, String name, Object[] args) - throws ScriptException { - if (obj == null) { - throw new IllegalArgumentException("script object is null"); - } - return invokeImpl(obj, name, args, Object.class); - } - - public Object getInterface(Object obj, Class clazz) { - if (obj == null) { - throw new IllegalArgumentException("script object is null"); - } - return makeInterface(obj, clazz); - } - - public Object getInterface(Class clazz) { - return makeInterface(null, clazz); - } - - private <T> T makeInterface(Object obj, Class<T> clazz) { - if (clazz == null || !clazz.isInterface()) { - throw new IllegalArgumentException("interface Class expected"); - } - final Object thiz = obj; - return (T) Proxy.newProxyInstance( - clazz.getClassLoader(), - new Class[] { clazz }, - new InvocationHandler() { - public Object invoke(Object proxy, Method m, Object[] args) - throws Throwable { - return invokeImpl(thiz, m.getName(), - args, m.getReturnType()); - } - }); - } - - // ScriptEngine methods - public synchronized Object eval(String str, ScriptContext ctx) - throws ScriptException { - Node node = compileScript(str, ctx); - return evalNode(node, ctx); - } - - public synchronized Object eval(Reader reader, ScriptContext ctx) - throws ScriptException { - Node node = compileScript(reader, ctx); - return evalNode(node, ctx); - } - - public ScriptEngineFactory getFactory() { - synchronized (this) { - if (factory == null) { - factory = new JRubyScriptEngineFactory(); - } - } - return factory; - } - - public Bindings createBindings() { - return new SimpleBindings(); - } - - // package-private methods - void setFactory(ScriptEngineFactory factory) { - this.factory = factory; - } - - // internals only below this point - - private Object rubyToJava(IRubyObject value) { - return rubyToJava(value, Object.class); - } - - private Object rubyToJava(IRubyObject value, Class type) { - return JavaUtil.convertArgument( - Java.ruby_to_java(value, value, Block.NULL_BLOCK), - type); - } - - private IRubyObject javaToRuby(Object value) { - if (value instanceof IRubyObject) { - return (IRubyObject) value; - } - IRubyObject result = JavaUtil.convertJavaToRuby(runtime, value); - if (result instanceof JavaObject) { - return runtime.getModule("JavaUtilities").callMethod(runtime.getCurrentContext(), "wrap", result); - } - return result; - } - - private synchronized Node compileScript(String script, ScriptContext ctx) - throws ScriptException { - GlobalVariables oldGlobals = runtime.getGlobalVariables(); - try { - setGlobalVariables(ctx); - String filename = (String) ctx.getAttribute(ScriptEngine.FILENAME); - if (filename == null) { - filename = "<unknown>"; - } - return runtime.parse(script, filename, null, 0); - } catch (Exception exp) { - throw new ScriptException(exp); - } finally { - if (oldGlobals != null) { - //setGlobalVariables(oldGlobals); - } - } - } - - private synchronized Node compileScript(Reader reader, ScriptContext ctx) - throws ScriptException { - GlobalVariables oldGlobals = runtime.getGlobalVariables(); - try { - setGlobalVariables(ctx); - String filename = (String) ctx.getAttribute(ScriptEngine.FILENAME); - if (filename == null) { - filename = "<unknown>"; - } - return runtime.parse(reader, filename, null, 0); - } catch (Exception exp) { - throw new ScriptException(exp); - } finally { - if (oldGlobals != null) { - //setGlobalVariables(oldGlobals); - } - } - } - - private void setGlobalVariables(final ScriptContext ctx) { - ctx.setAttribute("context", ctx, ScriptContext.ENGINE_SCOPE); - setGlobalVariables(new GlobalVariables(runtime) { - GlobalVariables parent = runtime.getGlobalVariables(); - - @Override - public void define(String name, IAccessor accessor) { - assert name != null; - assert accessor != null; - assert name.startsWith("$"); - synchronized (ctx) { - Bindings engineScope = ctx.getBindings(ScriptContext.ENGINE_SCOPE); - engineScope.put(name, new GlobalVariable(accessor)); - } - } - - - @Override - public void defineReadonly(String name, IAccessor accessor) { - assert name != null; - assert accessor != null; - assert name.startsWith("$"); - synchronized (ctx) { - Bindings engineScope = ctx.getBindings(ScriptContext.ENGINE_SCOPE); - engineScope.put(name, new GlobalVariable(new - ReadonlyAccessor(name, accessor))); - } - } - - @Override - public boolean isDefined(String name) { - assert name != null; - assert name.startsWith("$"); - synchronized (ctx) { - String modifiedName = name.substring(1); - boolean defined = ctx.getAttributesScope(modifiedName) != -1; - return defined ? true : parent.isDefined(name); - } - } - - @Override - public void alias(String name, String oldName) { - assert name != null; - assert oldName != null; - assert name.startsWith("$"); - assert oldName.startsWith("$"); - - if (runtime.getSafeLevel() >= 4) { - throw runtime.newSecurityError("Insecure: can't alias global variable"); - } - - synchronized (ctx) { - int scope = ctx.getAttributesScope(name); - if (scope == -1) { - scope = ScriptContext.ENGINE_SCOPE; - } - - IRubyObject value = get(oldName); - ctx.setAttribute(name, rubyToJava(value), scope); - } - } - - @Override - public IRubyObject get(String name) { - assert name != null; - assert name.startsWith("$"); - - synchronized (ctx) { - // skip '$' and try - String modifiedName = name.substring(1); - int scope = ctx.getAttributesScope(modifiedName); - if (scope == -1) { - return parent.get(name); - } - - Object obj = ctx.getAttribute(modifiedName, scope); - if (obj instanceof IAccessor) { - return ((IAccessor)obj).getValue(); - } else { - return javaToRuby(obj); - } - } - } - - @Override - public IRubyObject set(String name, IRubyObject value) { - assert name != null; - assert name.startsWith("$"); - - if (runtime.getSafeLevel() >= 4) { - throw runtime.newSecurityError("Insecure: can't change global variable value"); - } - - synchronized (ctx) { - // skip '$' and try - String modifiedName = name.substring(1); - int scope = ctx.getAttributesScope(modifiedName); - if (scope == -1) { - scope = ScriptContext.ENGINE_SCOPE; - } - IRubyObject oldValue = get(name); - Object obj = ctx.getAttribute(modifiedName, scope); - if (obj instanceof IAccessor) { - ((IAccessor)obj).setValue(value); - } else { - ctx.setAttribute(modifiedName, rubyToJava(value), scope); - } - return oldValue; - } - } - - @Override - public Iterator getNames() { - List list = new ArrayList(); - synchronized (ctx) { - Iterator<Integer> iterator = ctx.getScopes().iterator(); - int scope; - while (iterator.hasNext()) { - scope = iterator.next().intValue(); - Bindings b = ctx.getBindings(scope); - if (b != null) { - Iterator<String> bIterator = b.keySet().iterator(); - while (bIterator.hasNext()) { - list.add(bIterator.next()); - } - } - } - } - for (Iterator names = parent.getNames(); names.hasNext();) { - list.add(names.next()); - } - return Collections.unmodifiableList(list).iterator(); - } - }); - } - - private void setGlobalVariables(GlobalVariables globals) { - runtime.setGlobalVariables(globals); - } - - private synchronized Object evalNode(Node node, ScriptContext ctx) - throws ScriptException { - GlobalVariables oldGlobals = runtime.getGlobalVariables(); - try { - setGlobalVariables(ctx); - return rubyToJava(runtime.eval(node)); - } catch (RaiseException exp) { - RubyException rexp = exp.getException(); - throw new ScriptException(rexp.toString()); - } catch (Exception exp) { - throw new ScriptException(exp); - } finally { - if (oldGlobals != null) { - //setGlobalVariables(oldGlobals); - } - } - } - - private void init(String loadPath) { - runtime = Ruby.getDefaultInstance(); - if (loadPath == null) { - loadPath = System.getProperty("java.class.path"); - } - List list = new ArrayList(Arrays.asList(loadPath.split(File.pathSeparator))); - list.add("META-INF/jruby.home/lib/ruby/site_ruby/1.8"); - list.add("META-INF/jruby.home/lib/ruby/site_ruby/1.8/java"); - list.add("META-INF/jruby.home/lib/ruby/site_ruby"); - list.add("META-INF/jruby.home/lib/ruby/1.8"); - list.add("META-INF/jruby.home/lib/ruby/1.8/java"); - list.add("lib/ruby/1.8"); - runtime.getLoadService().init(list); - runtime.getLoadService().require("java"); - - } - - private Object invokeImpl(final Object obj, String method, - Object[] args, Class returnType) - throws ScriptException { - if (method == null) { - throw new NullPointerException("method name is null"); - } - - try { - IRubyObject rubyRecv = obj != null ? - JavaUtil.convertJavaToRuby(runtime, obj) : runtime.getTopSelf(); - - IRubyObject[] rubyArgs = JavaUtil.convertJavaArrayToRuby(runtime, args); - - // Create Ruby proxies for any input arguments that are not primitives. - IRubyObject javaUtilities = runtime.getObject().getConstant("JavaUtilities"); - for (int i = 0; i < rubyArgs.length; i++) { - IRubyObject tmp = rubyArgs[i]; - if (tmp instanceof JavaObject) { - rubyArgs[i] = javaUtilities.callMethod(runtime.getCurrentContext(), "wrap", tmp); - } - } - - IRubyObject result = rubyRecv.callMethod(runtime.getCurrentContext(), method, rubyArgs); - return rubyToJava(result, returnType); - } catch (Exception exp) { - throw new ScriptException(exp); - } - } -}
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