1 /*
2 * Copyright 2003-2007 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package org.codehaus.groovy.runtime.callsite;
17
18 import groovy.lang.GroovyObject;
19 import groovy.lang.GroovyRuntimeException;
20 import groovy.lang.MetaClass;
21 import groovy.lang.MissingMethodException;
22
23 import org.codehaus.groovy.runtime.ScriptBytecodeAdapter;
24 import org.codehaus.groovy.runtime.metaclass.MissingMethodExecutionFailed;
25
26 /**
27 *
28 * @author Alex Tkachman
29 */
30 public class PogoMetaClassSite extends MetaClassSite {
31 public PogoMetaClassSite(CallSite site, MetaClass metaClass) {
32 super(site, metaClass);
33 }
34
35 public final Object call(Object receiver, Object[] args) throws Throwable {
36 if (checkCall(receiver)) {
37 try {
38 try {
39 return metaClass.invokeMethod(receiver, name, args);
40 } catch (MissingMethodException e) {
41 if (e instanceof MissingMethodExecutionFailed) {
42 throw (MissingMethodException)e.getCause();
43 } else if (receiver.getClass() == e.getType() && e.getMethod().equals(name)) {
44 // in case there's nothing else, invoke the object's own invokeMethod()
45 return ((GroovyObject)receiver).invokeMethod(name, args);
46 } else {
47 throw e;
48 }
49 }
50 } catch (GroovyRuntimeException gre) {
51 throw ScriptBytecodeAdapter.unwrap(gre);
52 }
53 } else {
54 return CallSiteArray.defaultCall(this, receiver, args);
55 }
56 }
57
58 protected final boolean checkCall(Object receiver) {
59 return receiver instanceof GroovyObject && ((GroovyObject)receiver).getMetaClass() == metaClass;
60 }
61
62 public final Object callCurrent(GroovyObject receiver, Object[] args) throws Throwable {
63 if (checkCall(receiver)) {
64 try {
65 try {
66 return metaClass.invokeMethod(receiver, name, args);
67 } catch (MissingMethodException e) {
68 if (e instanceof MissingMethodExecutionFailed) {
69 throw (MissingMethodException)e.getCause();
70 } else if (receiver.getClass() == e.getType() && e.getMethod().equals(name)) {
71 // in case there's nothing else, invoke the object's own invokeMethod()
72 return ((GroovyObject)receiver).invokeMethod(name, args);
73 } else {
74 throw e;
75 }
76 }
77 } catch (GroovyRuntimeException gre) {
78 throw ScriptBytecodeAdapter.unwrap(gre);
79 }
80 } else {
81 return CallSiteArray.defaultCallCurrent(this, receiver, args);
82 }
83 }
84 }
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