Example usage for org.objectweb.asm MethodVisitor visitMethodInsn

List of usage examples for org.objectweb.asm MethodVisitor visitMethodInsn

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Introduction

In this page you can find the example usage for org.objectweb.asm MethodVisitor visitMethodInsn.

Prototype

@Deprecated
public void visitMethodInsn(final int opcode, final String owner, final String name, final String descriptor)

Source Link

Document

Visits a method instruction.

Usage

From source file:com.github.stokito.gag.instrument.util.StringBuilderVisitor.java

License:Apache License

public StringBuilderVisitor(MethodVisitor mv) {
    this.mv = mv;
    mv.visitTypeInsn(NEW, SB_NAME);//from w ww . ja v  a 2 s  .c  o  m
    mv.visitInsn(DUP);
    mv.visitMethodInsn(INVOKESPECIAL, SB_NAME, "<init>", "()V");
}

From source file:com.google.code.jconts.instrument.gen.ComputationClassGenerator.java

License:Apache License

private void generateConstructor(ClassVisitor cv) {
    final String name = info.computationClassName;
    final Type outerType = Type.getObjectType(info.owner);

    // Constructor have form either <init>(OuterClass this$0, State state)
    // or <init>(State state)
    String ctorDesc;// ww w.  j  a v a2 s. c  om
    if (info.isStatic()) {
        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType });
    } else {
        cv.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_FINAL, "this$0", 'L' + info.owner + ';', null, null);

        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { outerType, info.stateType });
    }

    // Generate constructor
    MethodVisitor mv = cv.visitMethod(0, CTOR_NAME, ctorDesc, null, null);
    mv.visitCode();
    Label start = new Label();
    Label end = new Label();
    mv.visitLabel(start);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, OBJECT_NAME, CTOR_NAME, DEFAULT_CTOR_DESC);

    // Save state field
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 1 + info.thisOffset);
    mv.visitFieldInsn(Opcodes.PUTFIELD, name, "state", stateDesc);

    // Save outer this
    if (!info.isStatic()) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitFieldInsn(Opcodes.PUTFIELD, name, "this$0", outerType.getDescriptor());
    }
    mv.visitInsn(Opcodes.RETURN);
    mv.visitLabel(end);

    mv.visitLocalVariable("this", 'L' + name + ';', signature, start, end, 0);
    if (!info.isStatic()) {
        mv.visitLocalVariable("this$0", outerType.getDescriptor(), null, start, end, 1);
    }
    mv.visitLocalVariable("state", stateDesc, null, start, end, 1 + info.thisOffset);

    mv.visitMaxs(2, 2 + info.thisOffset);
    mv.visitEnd();
}

From source file:com.google.code.jconts.instrument.gen.ComputationClassGenerator.java

License:Apache License

private void generateExecute(ClassVisitor cv) {
    final String name = info.computationClassName;
    final Type outerType = Type.getObjectType(info.owner);

    // Generate execute(Continuation<T> cont);
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_FINAL | Opcodes.ACC_PUBLIC, COMPUTATION_EXECUTE_NAME,
            COMPUTATION_EXECUTE_DESC, executeSignature(), null);
    mv.visitCode();/* w w w  .java  2s.  c  o m*/
    Label start = new Label();
    Label end = new Label();
    mv.visitLabel(start);

    // Load outer this
    if (!info.isStatic()) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, name, "this$0", outerType.getDescriptor());
    }

    // Load state field
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, name, "state", stateDesc);

    // state.continuation = continuation
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, name, "state", stateDesc);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, info.stateClassName, CONTINUATION_FIELD, CONTINUATION_DESC);

    // Initial state (0)
    mv.visitIntInsn(Opcodes.BIPUSH, 0);
    mv.visitMethodInsn(info.isStatic() ? Opcodes.INVOKESTATIC : Opcodes.INVOKEVIRTUAL, info.owner,
            info.name + "$async",
            Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType, Type.INT_TYPE }));

    mv.visitInsn(Opcodes.RETURN);
    mv.visitLabel(end);

    mv.visitLocalVariable("this", 'L' + name + ';', signature, start, end, 0);
    if (!info.isStatic()) {
        mv.visitLocalVariable("this$0", outerType.getDescriptor(), null, start, end, 1);
    }

    SignatureWriter sign = new SignatureWriter();
    contSignature(sign);
    mv.visitLocalVariable("continuation", CONTINUATION_DESC, sign.toString(), start, end, 1 + info.thisOffset);

    mv.visitMaxs(3 + info.thisOffset, 2 + info.thisOffset);
    mv.visitEnd();
}

From source file:com.google.code.jconts.instrument.gen.ContinuationClassGenerator.java

License:Apache License

private void generateConstructor(ClassVisitor cv) {
    final String name = info.continuationClassName;
    final Type outerType = Type.getObjectType(info.owner);

    // Constructor have form either <init>(OuterClass this$0, State state,
    // int index)
    // or <init>(State state, int index)
    String ctorDesc;/*from  ww w. j  av a2  s  .c  o  m*/
    if (info.isStatic()) {
        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType, Type.INT_TYPE });
    } else {
        cv.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_FINAL, "this$0", 'L' + info.owner + ';', null, null);

        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE,
                new Type[] { outerType, info.stateType, Type.INT_TYPE });
    }

    // Generate constructor
    MethodVisitor mv = cv.visitMethod(0, CTOR_NAME, ctorDesc, null, null);
    mv.visitCode();
    Label start = new Label();
    Label end = new Label();
    mv.visitLabel(start);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, OBJECT_NAME, CTOR_NAME, DEFAULT_CTOR_DESC);

    // Save state field
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ALOAD, 1 + info.thisOffset);
    mv.visitFieldInsn(Opcodes.PUTFIELD, name, "state", stateDesc);

    // Save index field
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Opcodes.ILOAD, 2 + info.thisOffset);
    mv.visitFieldInsn(Opcodes.PUTFIELD, name, "index", "I");

    // Save outer this
    if (!info.isStatic()) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitFieldInsn(Opcodes.PUTFIELD, name, "this$0", outerType.getDescriptor());
    }
    mv.visitInsn(Opcodes.RETURN);
    mv.visitLabel(end);

    mv.visitLocalVariable("this", 'L' + name + ';', signature, start, end, 0);
    if (!info.isStatic()) {
        mv.visitLocalVariable("this$0", outerType.getDescriptor(), null, start, end, 1);
    }
    mv.visitLocalVariable("state", stateDesc, null, start, end, 1 + info.thisOffset);
    mv.visitLocalVariable("index", "I", null, start, end, 2 + info.thisOffset);

    mv.visitMaxs(2, 3 + info.thisOffset);
    mv.visitEnd();
}

From source file:com.google.code.jconts.instrument.gen.ContinuationClassGenerator.java

License:Apache License

private void generateExecute(ClassVisitor cv, boolean execute) {
    final String name = info.continuationClassName;
    final Type outerType = Type.getObjectType(info.owner);

    // Generate invoke(T result);
    String signature = null;// w  w  w  . jav a 2 s . c om
    if (execute) {
        SignatureWriter sign = new SignatureWriter();
        sign.visitParameterType().visitTypeVariable("T");
        sign.visitReturnType().visitBaseType('V'); // void
        signature = sign.toString();
    }
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_FINAL | Opcodes.ACC_PUBLIC,
            execute ? CONTINUATION_INVOKE_NAME : CONTINUATION_SET_EXCEPTION_NAME,
            execute ? CONTINUATION_INVOKE_DESC : CONTINUATION_SET_EXCEPTION_DESC, signature, null);
    mv.visitCode();
    Label start = new Label();
    Label end = new Label();
    mv.visitLabel(start);

    // Load outer this
    if (!info.isStatic()) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, name, "this$0", outerType.getDescriptor());
    }

    // state.result = result or state.exception = throwable
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, name, "state", stateDesc);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, info.stateClassName, execute ? "result" : "exception",
            execute ? OBJECT_DESC : THROWABLE_DESC);

    // Load state field
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, name, "state", stateDesc);

    // Continue from this index or index+1 (for exception)
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, name, "index", "I");
    if (!execute) {
        mv.visitInsn(Opcodes.ICONST_1);
        mv.visitInsn(Opcodes.IADD);
    }

    mv.visitMethodInsn(info.isStatic() ? Opcodes.INVOKESTATIC : Opcodes.INVOKEVIRTUAL, info.owner,
            info.name + "$async",
            Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType, Type.INT_TYPE }));

    mv.visitInsn(Opcodes.RETURN);
    mv.visitLabel(end);

    mv.visitLocalVariable("this", 'L' + name + ';', signature, start, end, 0);
    if (!info.isStatic()) {
        mv.visitLocalVariable("this$0", outerType.getDescriptor(), null, start, end, 1);
    }
    mv.visitLocalVariable("result", OBJECT_DESC, "TT;", start, end, 1 + info.thisOffset);

    mv.visitMaxs(3 + info.thisOffset + (execute ? 0 : 1), 2 + info.thisOffset);
    mv.visitEnd();
}

From source file:com.google.code.jconts.instrument.gen.StateClassGenerator.java

License:Apache License

public void accept(TransformationContext context) {
    ClassVisitor cv = context.writer();/* w  w  w  .  j  a va2  s .  c  o  m*/

    final String name = info.stateClassName;

    cv.visit(Opcodes.V1_6, Opcodes.ACC_FINAL /*| Opcodes.ACC_SYNTHETIC*/, name, null, OBJECT_NAME, null);

    cv.visitSource(info.ownerSource, null);
    cv.visitOuterClass(info.owner, null, null);

    cv.visitField(0/*Opcodes.ACC_SYNTHETIC*/, CONTINUATION_FIELD, CONTINUATION_DESC,
            'L' + CONTINUATION_NAME + '<' + info.valueSignature + ">;", null);

    // Local variables state
    List<String> names = info.tracker.getFieldNames();
    List<Type> types = info.tracker.getFieldTypes();
    for (int i = 0; i < names.size(); ++i) {
        cv.visitField(0/*Opcodes.ACC_SYNTHETIC*/, names.get(i), types.get(i).getDescriptor(), null, null);
    }

    // Return value variable
    cv.visitField(0/*Opcodes.ACC_SYNTHETIC*/, "result", OBJECT_DESC, null, null);
    cv.visitField(0/*Opcodes.ACC_SYNTHETIC*/, "exception", THROWABLE_DESC, null, null);

    // Generate constructor
    MethodVisitor mv = cv.visitMethod(0, CTOR_NAME, DEFAULT_CTOR_DESC, null, null);
    mv.visitCode();
    Label start = new Label();
    Label end = new Label();
    mv.visitLabel(start);
    mv.visitLineNumber(0, start);

    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, OBJECT_NAME, CTOR_NAME, DEFAULT_CTOR_DESC);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitLabel(end);

    mv.visitLocalVariable("this", 'L' + name + ';', null, start, end, 0);

    mv.visitMaxs(1, 1);
    mv.visitEnd();

    cv.visitEnd();
}

From source file:com.google.code.jconts.instrument.gen.TramplineMethodGenerator.java

License:Apache License

public void accept(ClassVisitor cv) {
    MethodVisitor mv = cv.visitMethod(info.access, info.name, info.desc, info.signature, info.exceptions);
    mv.visitCode();/*from  w w  w  .  jav  a 2s  .  c  om*/
    mv.visitTypeInsn(Opcodes.NEW, info.computationClassName);
    mv.visitInsn(Opcodes.DUP);

    // "this' for new Computation(this, state)
    if (!info.isStatic()) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
    }

    // new State()
    mv.visitTypeInsn(Opcodes.NEW, info.stateClassName);
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, info.stateClassName, CTOR_NAME, DEFAULT_CTOR_DESC);

    // state.varX = argX
    String[] names = info.entryLocalsVars;
    for (int i = 0; i < info.entryLocals.length; ++i) {
        mv.visitInsn(Opcodes.DUP);
        mv.visitVarInsn(info.entryLocals[i].getOpcode(Opcodes.ILOAD), i + info.thisOffset);
        mv.visitFieldInsn(Opcodes.PUTFIELD, info.stateClassName, names[i], info.entryLocals[i].getDescriptor());
    }

    // new Computation(this, state);
    String ctorDesc;
    if (info.isStatic()) {
        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType });
    } else {
        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE,
                new Type[] { Type.getObjectType(info.owner), info.stateType });
    }
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, info.computationClassName, CTOR_NAME, ctorDesc);

    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(info.isStatic() ? 5 : 6,
            info.isStatic() ? info.entryLocals.length : info.entryLocals.length + 1);
    mv.visitEnd();
}

From source file:com.google.devtools.build.wireless.testing.java.injector.coverage.GenerateCoverageClassAdapterTest.java

License:Apache License

/**
 * Verify that the instruction to collect coverage would be invoked before any
 * invocation of <code>MIDlet.notifyDestroyed()</code> by 
 * {@link GenerateCoverageClassAdapter#visitMethod(int, String, String, String, String[])}
 * . /*from w ww .j  a va2s .c  om*/
 */
public void testVisitMethod_notifyDestroyed() {
    methodVisitorMock = createMock(MethodVisitor.class);
    methodVisitorMock.visitLdcInsn(eq(Platform.J2ME.getFileConnectionPrefix()));
    methodVisitorMock.visitMethodInsn(eq(Opcodes.INVOKESTATIC), eq(CoverageClassNames.COVERAGE_MANAGER),
            eq("writeReport"), eq("(L" + ClassNames.JAVA_LANG_STRING + ";)V"));
    methodVisitorMock.visitMethodInsn(eq(ACC_PUBLIC), eq(ClassNames.MIDLET), eq("notifyDestroyed"), eq("()v"));
    replay(methodVisitorMock);

    classVisitorMock = createClassVisitorMock(methodVisitorMock);
    classAdapterJ2ME = new GenerateCoverageClassAdapter(Platform.J2ME, classVisitorMock, null);

    classAdapterJ2ME.visit(0, ACC_PUBLIC, "Foo", "", ClassNames.JAVA_LANG_OBJECT, null);
    MethodVisitor mv = classAdapterJ2ME.visitMethod(ACC_PUBLIC, "bar", "()v", "", null);
    verify(classVisitorMock);

    mv.visitMethodInsn(ACC_PUBLIC, ClassNames.MIDLET, "notifyDestroyed", "()v");
    verify(methodVisitorMock);

    assertTrue(
            "The returned instance should be an instance of "
                    + ReportBeforeDestroyingMethodAdapter.class.getName(),
            mv instanceof ReportBeforeDestroyingMethodAdapter);
}

From source file:com.google.devtools.build.wireless.testing.java.injector.coverage.GenerateCoverageClassAdapterTest.java

License:Apache License

/**
 * Tests the normal execution of/*w  ww  .  j  a v  a 2s.  com*/
 * {@link GenerateCoverageClassAdapter#visitMethod(int, String, String, String, String[])}
 * with common methods. 
 */
public void testVisitMethod_unknownMethod() {
    methodVisitorMock = createMock(MethodVisitor.class);
    methodVisitorMock.visitMethodInsn(anyInt(), anyString(), anyString(), anyString());
    replay(methodVisitorMock);

    classVisitorMock = createClassVisitorMock(methodVisitorMock);
    classAdapterJ2ME = new GenerateCoverageClassAdapter(Platform.J2ME, classVisitorMock, null);

    classAdapterJ2ME.visit(0, ACC_PUBLIC, "Foo", "", ClassNames.JAVA_LANG_OBJECT, null);
    MethodVisitor mv = classAdapterJ2ME.visitMethod(ACC_PUBLIC, "bar", "()v", "", null);
    verify(classVisitorMock);

    mv.visitMethodInsn(ACC_PUBLIC, ClassNames.MIDLET, "asd", "()v");
    verify(methodVisitorMock);

    assertTrue(
            "The returned instance should be an instance of "
                    + ReportBeforeDestroyingMethodAdapter.class.getName(),
            mv instanceof ReportBeforeDestroyingMethodAdapter);
}

From source file:com.google.devtools.build.wireless.testing.java.injector.coverage.GenerateCoverageClassAdapterTest.java

License:Apache License

/**
 * Verify that the instruction to collect coverage would be invoked before any
 * invocation of <code>MIDlet.notifyDestroyed()</code> by 
 * {@link GenerateCoverageClassAdapter#visitMethod(int, String, String, String, String[])}
 * . //from w w w  .  j av a2s .  c o  m
 */
public void testVisitMethod_notJ2ME() {
    methodVisitorMock = createMock(MethodVisitor.class);
    methodVisitorMock.visitMethodInsn(anyInt(), anyString(), anyString(), anyString());
    replay(methodVisitorMock);

    classVisitorMock = createClassVisitorMock(methodVisitorMock);
    classAdapterJ2ME = new GenerateCoverageClassAdapter(Platform.RIM, classVisitorMock, null);

    classAdapterJ2ME.visit(0, ACC_PUBLIC, "Foo", "", ClassNames.JAVA_LANG_OBJECT, null);
    MethodVisitor mv = classAdapterJ2ME.visitMethod(ACC_PUBLIC, "bar", "()v", "", null);
    verify(classVisitorMock);

    mv.visitMethodInsn(ACC_PUBLIC, ClassNames.MIDLET, "notifyDestroyed", "()v");
    verify(methodVisitorMock);

    assertFalse(
            "The returned instance should NOT be an instance of "
                    + ReportBeforeDestroyingMethodAdapter.class.getName(),
            mv instanceof ReportBeforeDestroyingMethodAdapter);
}