/*
* Copyright 2003-2009 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package gls.generics;
import groovy.lang.GroovyClassLoader;
import groovy.lang.GroovyClassLoader.InnerLoader;
import groovy.util.GroovyTestCase;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.control.CompilationFailedException;
import org.codehaus.groovy.control.CompilationUnit;
import org.codehaus.groovy.control.SourceUnit;
import org.objectweb.asm.*;
import java.util.HashMap;
import java.util.Map;
public abstract class GenericsTestBase extends GroovyTestCase {
MyLoader loader;
HashMap signatures;
private class MyLoader extends GroovyClassLoader{
public MyLoader(ClassLoader classLoader) {
super(classLoader);
}
protected ClassCollector createCollector(CompilationUnit unit,SourceUnit su) {
return new MyCollector(new InnerLoader(this), unit, su);
}
}
private class MyCollector extends GroovyClassLoader.ClassCollector{
public MyCollector(InnerLoader myLoader, CompilationUnit unit, SourceUnit su) {
super(myLoader,unit,su);
}
protected Class createClass(byte[] code, ClassNode classNode) {
ClassReader cr = new ClassReader(code);
GenericsTester classVisitor = new GenericsTester(new org.objectweb.asm.tree.ClassNode());
cr.accept(classVisitor, ClassWriter.COMPUTE_MAXS);
return super.createClass(code,classNode);
}
}
private class GenericsTester extends ClassVisitor {
public GenericsTester(ClassVisitor cv) {
super(Opcodes.ASM4,cv);
}
public void visit(int version, int access, String name,
String signature, String superName, String[] interfaces) {
if (signature!=null) signatures.put("class", signature);
}
public FieldVisitor visitField(int access, String name, String desc,
String signature, Object value) {
if (signature!=null) signatures.put(name,signature);
return super.visitField(access, name, desc, signature, value);
}
public MethodVisitor visitMethod(int access, String name, String desc,
String signature, String[] exceptions) {
if (signature!=null) signatures.put(name+desc,signature);
return super.visitMethod(access, name, desc, signature, exceptions);
}
}
public void setUp(){
loader = new MyLoader(this.getClass().getClassLoader());
signatures = new HashMap();
}
public void createClassInfo(String script) {
loader.parseClass(script);
}
public Map getSignatures() {
return signatures;
}
protected void shouldNotCompile(String script) {
try {
loader.parseClass(script);
} catch (CompilationFailedException cfe) {
return;
}
throw new AssertionError("compilation of script '"+script+"' should have failed, but did not.");
}
}