Example usage for org.objectweb.asm Opcodes ALOAD

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ALOAD.

Prototype

int ALOAD

To view the source code for org.objectweb.asm Opcodes ALOAD.

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Usage

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

License:Apache License

/**
 * Generates a class./*from w ww  . ja  va 2  s. co m*/
 * @param contents the {@link GraphInfo} contents
 * @param target the target class
 * @return the generated class data
 */
public ClassData generate(Location contents, ClassDescription target) {
    ClassWriter writer = newWriter(target, AbstractApplication.class);
    defineEmptyConstructor(writer, method -> {
        method.visitVarInsn(Opcodes.ALOAD, 0);
        getConst(method, contents.toPath());
        method.visitMethodInsn(Opcodes.INVOKESPECIAL, typeOf(AbstractApplication.class).getInternalName(),
                CONSTRUCTOR_NAME, Type.getMethodDescriptor(Type.VOID_TYPE, typeOf(String.class)), false);
    });
    writer.visitEnd();
    return new ClassData(target, writer::toByteArray);
}

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

License:Apache License

/**
 * Returns the T_LOAD opcode./*from w  w w  . jav a  2  s  .  c om*/
 * @param type the target type
 * @return the opcode
 */
public static int loadOpcodeOf(TypeDescription type) {
    Arguments.requireNonNull(type);
    if (type.getTypeKind() == TypeKind.BASIC) {
        switch (((BasicTypeDescription) type).getBasicTypeKind()) {
        case BOOLEAN:
        case BYTE:
        case CHAR:
        case SHORT:
        case INT:
            return Opcodes.ILOAD;
        case LONG:
            return Opcodes.LLOAD;
        case FLOAT:
            return Opcodes.FLOAD;
        case DOUBLE:
            return Opcodes.DLOAD;
        default:
            throw new AssertionError(type);
        }
    }
    return Opcodes.ALOAD;
}

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

License:Apache License

/**
 * Adds an empty constructor./*w  w  w. j  av a 2  s.c o m*/
 * @param writer the target class
 * @param superClass the super class
 * @param body the constructor body
 */
public static void defineEmptyConstructor(ClassWriter writer, Class<?> superClass,
        Consumer<MethodVisitor> body) {
    MethodVisitor method = writer.visitMethod(Opcodes.ACC_PUBLIC, CONSTRUCTOR_NAME,
            Type.getMethodDescriptor(Type.VOID_TYPE), null, null);
    method.visitVarInsn(Opcodes.ALOAD, 0);
    method.visitMethodInsn(Opcodes.INVOKESPECIAL, typeOf(superClass).getInternalName(), CONSTRUCTOR_NAME,
            Type.getMethodDescriptor(Type.VOID_TYPE), false);
    body.accept(method);
    method.visitInsn(Opcodes.RETURN);
    method.visitMaxs(0, 0);
    method.visitEnd();
}

---

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

License:Apache License

/**
 * Adds an adapter constructor./*www .j av a  2  s . c  o  m*/
 * @param writer the target class
 * @param superClass the super class
 * @param body the constructor body
 */
public static void defineAdapterConstructor(ClassWriter writer, Class<?> superClass,
        Consumer<MethodVisitor> body) {
    MethodVisitor method = writer.visitMethod(Opcodes.ACC_PUBLIC, CONSTRUCTOR_NAME,
            Type.getMethodDescriptor(Type.VOID_TYPE, typeOf(VertexProcessorContext.class)), null, null);
    method.visitVarInsn(Opcodes.ALOAD, 0);
    method.visitVarInsn(Opcodes.ALOAD, 1);
    method.visitMethodInsn(Opcodes.INVOKESPECIAL, typeOf(superClass).getInternalName(), CONSTRUCTOR_NAME,
            Type.getMethodDescriptor(Type.VOID_TYPE, typeOf(VertexProcessorContext.class)), false);
    body.accept(method);
    method.visitInsn(Opcodes.RETURN);
    method.visitMaxs(0, 0);
    method.visitEnd();
}

---

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

License:Apache License

/**
 * Adds a constructor with dependencies.
 * @param aClass the target class// ww  w  .j  a  v a 2 s.  c  om
 * @param writer the current writer
 * @param dependencies the target dependencies
 * @param callback the callback for building the extra constructor statements
 * @return the dependency map
 */
public static List<Tuple<VertexElement, FieldRef>> defineDependenciesConstructor(ClassDescription aClass,
        ClassVisitor writer, Iterable<? extends VertexElement> dependencies, Consumer<MethodVisitor> callback) {
    return defineDependenciesConstructor0(aClass, writer, dependencies, method -> {
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitMethodInsn(Opcodes.INVOKESPECIAL, typeOf(Object.class).getInternalName(), CONSTRUCTOR_NAME,
                Type.getMethodDescriptor(Type.VOID_TYPE), false);
    }, callback);
}

---

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

License:Apache License

/**
 * Adds a constructor with dependencies.
 * @param <T> the property type//from  ww  w.jav a 2s.c o m
 * @param context the current context
 * @param properties the dependency properties
 * @param aClass the target class
 * @param writer the current writer
 * @param callback the callback for building the extra constructor statements
 * @return the field map
 * @since 0.4.1
 */
public static <T extends OperatorProperty> Map<T, FieldRef> defineDependenciesConstructor(
        OperatorNodeGenerator.Context context, List<? extends T> properties, ClassDescription aClass,
        ClassVisitor writer, Consumer<MethodVisitor> callback) {
    return defineDependenciesConstructor(context, properties, aClass, writer, method -> {
        method.visitVarInsn(Opcodes.ALOAD, 0);
        method.visitMethodInsn(Opcodes.INVOKESPECIAL, typeOf(Object.class).getInternalName(), CONSTRUCTOR_NAME,
                Type.getMethodDescriptor(Type.VOID_TYPE), false);
    }, callback);
}

---

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);/*from w  w w  .  j a  v a2  s .com*/
        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.AsmUtil.java

License:Apache License

/**
 * Performs {@code T_STORE} instruction.
 * @param method the target method/*www . j  a va  2  s.  c  o  m*/
 * @param sort the target type sort
 * @param index the target local variable index
 * @return the target local variable ref
 */
public static LocalVarRef putLocalVar(MethodVisitor method, int sort, int index) {
    int load;
    int store;
    switch (sort) {
    case Type.BOOLEAN:
    case Type.BYTE:
    case Type.SHORT:
    case Type.CHAR:
    case Type.INT:
        load = Opcodes.ILOAD;
        store = Opcodes.ISTORE;
        break;
    case Type.LONG:
        load = Opcodes.LLOAD;
        store = Opcodes.LSTORE;
        break;
    case Type.FLOAT:
        load = Opcodes.FLOAD;
        store = Opcodes.FSTORE;
        break;
    case Type.DOUBLE:
        load = Opcodes.DLOAD;
        store = Opcodes.DSTORE;
        break;
    case Type.ARRAY:
    case Type.OBJECT:
        load = Opcodes.ALOAD;
        store = Opcodes.ASTORE;
        break;
    default:
        throw new AssertionError(sort);
    }
    method.visitVarInsn(store, index);
    return new LocalVarRef(load, index);
}

---

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

License:Apache License

/**
 * Cast the local variable.//from ww  w .  jav  a  2  s.c  o  m
 * @param method the writer
 * @param index the variable index
 * @param type the target type
 * @return the target variable
 */
public static LocalVarRef cast(MethodVisitor method, int index, TypeDescription type) {
    method.visitVarInsn(Opcodes.ALOAD, index);
    method.visitTypeInsn(Opcodes.CHECKCAST, AsmUtil.typeOf(type).getInternalName());
    return putLocalVar(method, Type.OBJECT, index);
}

---

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

License:Apache License

private static ClassData generate0(List<? extends VertexElement> successors, ClassDescription target) {
    Arguments.require(successors.size() >= 2);
    TypeDescription dataType = getDataType(successors);
    ClassWriter writer = newWriter(target, Object.class, Result.class);
    FieldRef buffer = defineField(writer, target, "buffer", typeOf(dataType));
    List<Tuple<VertexElement, FieldRef>> pairs = defineDependenciesConstructor(target, writer, successors,
            v -> {/*from ww  w .j ava 2s . c  o m*/
                v.visitVarInsn(Opcodes.ALOAD, 0);
                getNew(v, dataType);
                putField(v, buffer);
            });
    defineResultAdd(writer, method -> {
        LocalVarRef self = new LocalVarRef(Opcodes.ALOAD, 0);
        LocalVarRef input = cast(method, 1, dataType);
        self.load(method);
        getField(method, buffer);
        LocalVarRef buf = putLocalVar(method, Type.OBJECT, 2);
        for (int i = 0, n = pairs.size(); i < n; i++) {
            self.load(method);
            getField(method, pairs.get(i).right());
            if (i < n - 1) {
                buf.load(method);
                input.load(method);
                copyDataModel(method, dataType);
                buf.load(method);
            } else {
                input.load(method);
            }
            invokeResultAdd(method);
        }
    });
    writer.visitEnd();
    return new ClassData(target, writer::toByteArray);
}

---

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