Example usage for org.objectweb.asm MethodVisitor visitInsn

Introduction

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

Prototype

public void visitInsn(final int opcode) 

Source Link

Document

Visits a zero operand instruction.

Usage

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds {@link Result#add(Object)} method.
 * @param writer the current writer//  w w  w .  j a v  a2 s .  com
 * @param callback the callback
 */
public static void defineResultAdd(ClassVisitor writer, Consumer<MethodVisitor> callback) {
    MethodVisitor method = writer.visitMethod(Opcodes.ACC_PUBLIC, "add",
            Type.getMethodDescriptor(Type.VOID_TYPE, typeOf(Object.class)), null, null);
    callback.accept(method);
    method.visitInsn(Opcodes.RETURN);
    method.visitMaxs(0, 0);
    method.visitEnd();
}

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From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

/**
 * Adds constant {@code toString()} method.
 * @param writer the current writer/*from  w w  w .  j av a2s .co m*/
 * @param value the constant value
 */
public static void defineToString(ClassVisitor writer, String value) {
    MethodVisitor method = writer.visitMethod(Opcodes.ACC_PUBLIC, "toString",
            Type.getMethodDescriptor(typeOf(String.class)), null, null);
    getConst(method, value);
    method.visitInsn(Opcodes.ARETURN);
    method.visitMaxs(0, 0);
    method.visitEnd();
}

---

From source file:com.asakusafw.dag.compiler.codegen.AsmUtil.java

License:Apache License

private static List<Tuple<VertexElement, FieldRef>> defineDependenciesConstructor0(ClassDescription aClass,
        ClassVisitor writer, Iterable<? extends VertexElement> dependencies,
        Consumer<MethodVisitor> superConstructor, Consumer<MethodVisitor> callback) {
    List<Tuple<VertexElement, FieldRef>> results = new ArrayList<>();
    int index = 0;
    int varIndex = 1;
    List<Type> parameterTypes = new ArrayList<>();
    List<Consumer<MethodVisitor>> ctor = new ArrayList<>();
    for (VertexElement element : dependencies) {
        int current = index++;
        int currentVar = varIndex;
        String name = getDependencyId(current);
        Type type = typeOf(element.getRuntimeType());
        parameterTypes.add(type);//  w w w.j a v  a 2 s. c  o m
        FieldRef ref = defineField(writer, aClass, name, type);
        ctor.add(v -> {
            v.visitVarInsn(Opcodes.ALOAD, 0);
            v.visitVarInsn(loadOpcodeOf(element.getRuntimeType()), currentVar);
            putField(v, ref);
        });
        varIndex += categoryOf(element.getRuntimeType());
        results.add(new Tuple<>(element, ref));
    }
    MethodVisitor method = writer.visitMethod(Opcodes.ACC_PUBLIC, CONSTRUCTOR_NAME,
            Type.getMethodDescriptor(Type.VOID_TYPE, parameterTypes.stream().toArray(Type[]::new)), null, null);
    superConstructor.accept(method);
    ctor.forEach(c -> c.accept(method));
    callback.accept(method);
    method.visitInsn(Opcodes.RETURN);
    method.visitMaxs(0, 0);
    method.visitEnd();
    return results;
}

---

From source file:com.asakusafw.dag.compiler.codegen.CleanupStageClientGenerator.java

License:Apache License

private static void defineString(ClassWriter writer, String name, String value) {
    MethodVisitor method = writer.visitMethod(Opcodes.ACC_PROTECTED, name,
            Type.getMethodDescriptor(typeOf(String.class)), null, new String[0]);
    getConst(method, value);//from   ww  w  .  ja  va2 s. c om
    method.visitInsn(Opcodes.ARETURN);
    method.visitMaxs(0, 0);
    method.visitEnd();
}

---

From source file:com.asakusafw.dag.compiler.codegen.DataComparatorGenerator.java

License:Apache License

private static void defineCompare(ClassWriter writer, DataModelReference reference,
        List<Group.Ordering> orderings) {
    MethodVisitor v = writer.visitMethod(Opcodes.ACC_PUBLIC, "compare", DESC_COMPARE, null,
            new String[] { typeOf(IOException.class).getInternalName(), });
    LocalVarRef a = new LocalVarRef(Opcodes.ALOAD, 1);
    LocalVarRef b = new LocalVarRef(Opcodes.ALOAD, 2);
    for (Group.Ordering ordering : orderings) {
        PropertyReference property = Invariants
                .requireNonNull(reference.findProperty(ordering.getPropertyName()));

        // int diff = ValueOptionSerDe.compareT({a, b}, {b, a});
        switch (ordering.getDirection()) {
        case ASCENDANT:
            a.load(v);//from  w ww  . j  a  v a 2  s  .c o  m
            b.load(v);
            break;
        case DESCENDANT:
            b.load(v);
            a.load(v);
            break;
        default:
            throw new AssertionError(ordering);
        }
        v.visitMethodInsn(Opcodes.INVOKESTATIC, typeOf(ValueOptionSerDe.class).getInternalName(),
                Invariants.requireNonNull(METHOD_NAMES.get(property.getType())), DESC_COMPARE, false);
        LocalVarRef cmp = putLocalVar(v, Type.INT, 3);
        Label eq = new Label();

        // if (diff != 0) {
        cmp.load(v);
        v.visitJumpInsn(Opcodes.IFEQ, eq);

        // return diff;
        cmp.load(v);
        v.visitInsn(Opcodes.IRETURN);

        // } @ eq
        v.visitLabel(eq);
    }
    getConst(v, 0);
    v.visitInsn(Opcodes.IRETURN);
    v.visitMaxs(0, 0);
    v.visitEnd();
}

---

From source file:com.asakusafw.dag.compiler.codegen.EdgeDataTableAdapterGenerator.java

License:Apache License

private static void defineBuildKey(ClassGeneratorContext context, ClassWriter writer, TypeDescription dataType,
        Group group) {//from  www. j av  a  2  s. c  o  m
    DataModelReference type = context.getDataModelLoader().load(dataType);
    List<PropertyReference> props = group.getGrouping().stream()
            .map(p -> Invariants.requireNonNull(type.findProperty(p))).collect(Collectors.toList());

    MethodVisitor v = writer.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL, "buildKey",
            Type.getMethodDescriptor(Type.VOID_TYPE, typeOf(KeyBuffer.class), typeOf(Object.class)), null,
            null);

    LocalVarRef key = new LocalVarRef(Opcodes.ALOAD, 1);
    LocalVarRef object = cast(v, 2, dataType);
    for (PropertyReference p : props) {
        key.load(v);
        object.load(v);
        getOption(v, p);
        v.visitMethodInsn(Opcodes.INVOKEINTERFACE, typeOf(KeyBuffer.class).getInternalName(), "append",
                Type.getMethodDescriptor(typeOf(KeyBuffer.class), typeOf(Object.class)), true);
        v.visitInsn(Opcodes.POP);
    }

    v.visitInsn(Opcodes.RETURN);
    v.visitMaxs(0, 0);
    v.visitEnd();
}

---

From source file:com.asakusafw.dag.compiler.codegen.KeyValueSerDeGenerator.java

License:Apache License

private static void putSerialize(String methodName, DataModelReference reference,
        List<PropertyReference> properties, ClassWriter writer) {
    MethodVisitor v = writer.visitMethod(Opcodes.ACC_PUBLIC, methodName,
            Type.getMethodDescriptor(Type.VOID_TYPE, typeOf(Object.class), typeOf(DataOutput.class)), null,
            new String[] { typeOf(IOException.class).getInternalName(),
                    typeOf(InterruptedException.class).getInternalName(), });
    if (properties.isEmpty()) {
        LocalVarRef output = new LocalVarRef(Opcodes.ALOAD, 2);
        output.load(v);//w ww  .j  a  va  2s  .c o m
        getConst(v, 0);
        v.visitMethodInsn(Opcodes.INVOKEINTERFACE, typeOf(DataOutput.class).getInternalName(), "writeByte",
                Type.getMethodDescriptor(Type.VOID_TYPE, Type.INT_TYPE), true);
    } else {
        LocalVarRef object = cast(v, 1, reference.getDeclaration());
        LocalVarRef output = new LocalVarRef(Opcodes.ALOAD, 2);
        for (PropertyReference property : properties) {
            object.load(v);
            getOption(v, property);
            output.load(v);
            v.visitMethodInsn(Opcodes.INVOKESTATIC, SERDE.getInternalName(), "serialize", Type
                    .getMethodDescriptor(Type.VOID_TYPE, typeOf(property.getType()), typeOf(DataOutput.class)),
                    false);
        }
    }
    v.visitInsn(Opcodes.RETURN);
    v.visitMaxs(0, 0);
    v.visitEnd();
}

---

From source file:com.asakusafw.dag.compiler.codegen.KeyValueSerDeGenerator.java

License:Apache License

private static void putDeserialize(DataModelReference reference, List<PropertyReference> keys,
        List<PropertyReference> values, FieldRef buffer, ClassWriter writer) {
    MethodVisitor v = writer.visitMethod(Opcodes.ACC_PUBLIC, "deserializePair",
            Type.getMethodDescriptor(typeOf(Object.class), typeOf(DataInput.class), typeOf(DataInput.class)),
            null, new String[] { typeOf(IOException.class).getInternalName(),
                    typeOf(InterruptedException.class).getInternalName(), });
    LocalVarRef self = new LocalVarRef(Opcodes.ALOAD, 0);
    LocalVarRef keyInput = new LocalVarRef(Opcodes.ALOAD, 1);
    LocalVarRef valueInput = new LocalVarRef(Opcodes.ALOAD, 2);
    self.load(v);/*from  w w w. ja  v  a 2s . com*/
    getField(v, buffer);
    LocalVarRef object = putLocalVar(v, Type.OBJECT, 3);
    putDeserializeBody(v, keys, keyInput, object);
    putDeserializeBody(v, values, valueInput, object);
    object.load(v);
    v.visitInsn(Opcodes.ARETURN);
    v.visitMaxs(0, 0);
    v.visitEnd();
}

---

From source file:com.asakusafw.dag.compiler.codegen.KeyValueSerDeGenerator.java

License:Apache License

private static void putDeserializeBody(MethodVisitor v, List<PropertyReference> props, LocalVarRef input,
        LocalVarRef object) {/*from   w  w w  .  ja v  a 2  s.  c  o m*/
    if (props.isEmpty()) {
        input.load(v);
        v.visitMethodInsn(Opcodes.INVOKEINTERFACE, typeOf(DataInput.class).getInternalName(), "readByte",
                Type.getMethodDescriptor(Type.BYTE_TYPE), true);
        v.visitInsn(Opcodes.POP);
    } else {
        for (PropertyReference property : props) {
            object.load(v);
            getOption(v, property);
            input.load(v);
            v.visitMethodInsn(Opcodes.INVOKESTATIC, SERDE.getInternalName(), "deserialize", Type
                    .getMethodDescriptor(Type.VOID_TYPE, typeOf(property.getType()), typeOf(DataInput.class)),
                    false);
        }
    }
}

---

From source file:com.asakusafw.dag.compiler.codegen.ObjectComparatorGenerator.java

License:Apache License

private static void defineCompare(ClassWriter writer, DataModelReference reference,
        List<Group.Ordering> orderings) {
    MethodVisitor v = writer.visitMethod(Opcodes.ACC_PUBLIC, "compare",
            Type.getMethodDescriptor(typeOf(int.class), typeOf(Object.class), typeOf(Object.class)), null,
            null);/*  w  w w.  ja  v a 2  s.  c  o  m*/
    LocalVarRef a = cast(v, 1, reference.getDeclaration());
    LocalVarRef b = cast(v, 2, reference.getDeclaration());
    for (Group.Ordering ordering : orderings) {
        LocalVarRef left;
        LocalVarRef right;
        switch (ordering.getDirection()) {
        case ASCENDANT:
            left = a;
            right = b;
            break;
        case DESCENDANT:
            left = b;
            right = a;
            break;
        default:
            throw new AssertionError(ordering);
        }

        // int diff = left.getXOption().compareTo(right.getXOption());
        PropertyReference property = Invariants
                .requireNonNull(reference.findProperty(ordering.getPropertyName()));
        left.load(v);
        getOption(v, property);
        right.load(v);
        getOption(v, property);
        v.visitMethodInsn(Opcodes.INVOKEINTERFACE, TYPE_COMPARABLE.getInternalName(), "compareTo",
                Type.getMethodDescriptor(typeOf(int.class), typeOf(Object.class)), true);
        LocalVarRef cmp = putLocalVar(v, Type.INT, 3);
        Label eq = new Label();

        // if (diff != 0) {
        cmp.load(v);
        v.visitJumpInsn(Opcodes.IFEQ, eq);

        // return diff;
        cmp.load(v);
        v.visitInsn(Opcodes.IRETURN);

        // } @ eq
        v.visitLabel(eq);
    }
    getConst(v, 0);
    v.visitInsn(Opcodes.IRETURN);
    v.visitMaxs(0, 0);
    v.visitEnd();
}

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