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/*
* Copyright (C) 2016 The Android Open Source Project
*
* 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 com.android.layoutlib.bridge.intensive.util;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import libcore.io.Streams;
/**
* Module class loader that loads classes from the test project.
*/
public class ModuleClassLoader extends ClassLoader {
private final Map<String, Class<?>> mClasses = new HashMap<>();
private String myModuleRoot;
/**
* @param moduleRoot The path to the module root
* @param parent The parent class loader
*/
public ModuleClassLoader(String moduleRoot, ClassLoader parent) {
super(parent);
myModuleRoot = moduleRoot + (moduleRoot.endsWith("/") ? "" : "/");
}
@Override
protected Class<?> findClass(String name) throws ClassNotFoundException {
try {
return super.findClass(name);
} catch (ClassNotFoundException ignored) {
}
Class<?> clazz = mClasses.get(name);
if (clazz == null) {
String path = name.replace('.', '/').concat(".class");
try {
InputStream classStream = getResourceAsStream(myModuleRoot + path);
if (classStream == null) {
throw new IOException("Cannot find resource stream for class " + name);
}
byte[] b = Streams.readFully(classStream);
clazz = defineClass(name, b, 0, b.length);
mClasses.put(name, clazz);
} catch (IOException ignore) {
throw new ClassNotFoundException(name + " not found");
}
}
return clazz;
}
}
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