Package org.ow2.asm.tree.analysis

Source Code of org.ow2.asm.tree.analysis.AnalyzerUnitTest

/***
* ASM tests
* Copyright (c) 2002-2005 France Telecom
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the copyright holders nor the names of its
*    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.ow2.asm.tree.analysis;

import org.ow2.asm.ClassReader;
import org.ow2.asm.ClassWriterComputeMaxsUnitTest;
import org.ow2.asm.MethodVisitor;
import org.ow2.asm.commons.EmptyVisitor;
import org.ow2.asm.tree.MethodNode;

/**
* Analyzer unit tests for methods with JSR instructions.
*
* @author Eric Bruneton
*/
public class AnalyzerUnitTest extends ClassWriterComputeMaxsUnitTest {

    @Override
    protected boolean isComputeMaxs() {
        return false;
    }

    @Override
    protected void assertMaxs(final int maxStack, final int maxLocals) {
        mv.visitMaxs(maxStack, maxLocals);
        mv.visitEnd();
        cw.visitEnd();
        byte[] b = cw.toByteArray();
        ClassReader cr = new ClassReader(b);
        cr.accept(new EmptyVisitor() {
            @Override
            public MethodVisitor visitMethod(
                final int access,
                final String name,
                final String desc,
                final String signature,
                final String[] exceptions)
            {
                if (name.equals("m")) {
                    return new MethodNode(access,
                            name,
                            desc,
                            signature,
                            exceptions)
                    {
                        @Override
                        public void visitEnd() {
                            Analyzer<BasicValue> a = new Analyzer<BasicValue>(new BasicInterpreter());
                            try {
                                Frame<BasicValue>[] frames = a.analyze("C", this);
                                int mStack = 0;
                                int mLocals = 0;
                                for (int i = 0; i < frames.length; ++i) {
                                    if (frames[i] != null) {
                                        mStack = Math.max(mStack,
                                                frames[i].getStackSize());
                                        mLocals = Math.max(mLocals,
                                                frames[i].getLocals());
                                    }
                                }
                                assertEquals("maxStack", maxStack, mStack);
                                assertEquals("maxLocals", maxLocals, mLocals);
                            } catch (Exception e) {
                                fail(e.getMessage());
                            }
                        }
                    };
                } else {
                    return new EmptyVisitor();
                }
            }
        }, 0);

        try {
            TestClassLoader loader = new TestClassLoader();
            Class<?> c = loader.defineClass("C", b);
            c.newInstance();
        } catch (Throwable t) {
            fail(t.getMessage());
        }
    }

    @Override
    protected void assertGraph(final String graph) {
    }
}
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