/*
 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package openjdk.jcov.filter.simplemethods;

import org.objectweb.asm.ClassReader;
import org.objectweb.asm.tree.ClassNode;
import org.objectweb.asm.tree.MethodNode;

import java.io.IOException;

public class TestUtils {
    static ClassNode findTestClass(Class cls) throws IOException {
        ClassNode result = new ClassNode();
        ClassReader reader = new ClassReader(cls.getClassLoader().
                getResourceAsStream(cls.getName().replace('.','/') + ".class"));
        reader.accept(result, 0);
        return result;
    }

    static MethodNode findTestMethod(ClassNode cls, String methodSig)  {
        for(Object mo: cls.methods) {
            MethodNode m = (MethodNode) mo;
            if((m.name + m.desc).equals(methodSig)) {
                return m;
            }
        }
        throw new IllegalStateException("Method does not exist: " + methodSig + " in class " + cls.name);
    }
}
