Example usage for org.objectweb.asm MethodVisitor visitFrame

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

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Introduction

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

Prototype

public void visitFrame(final int type, final int numLocal, final Object[] local, final int numStack,
        final Object[] stack)

Source Link

Document

Visits the current state of the local variables and operand stack elements.

Usage

From source file:net.wpm.reflectasm.ClassAccess.java

License:Open Source License

static private void insertGetPrimitive(ClassWriter cw, String classNameInternal, List<Field> fields,
        Type primitiveType, String getterMethodName, int returnValueInstruction) {
    int maxStack = 6;
    final String typeNameInternal = primitiveType.getDescriptor();
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, getterMethodName, "(Ljava/lang/Object;I)" + typeNameInternal,
            null, null);/*from   ww w . j ava 2  s  . co  m*/
    mv.visitCode();
    mv.visitVarInsn(ILOAD, 2);

    if (!fields.isEmpty()) {
        maxStack--;
        Label[] labels = new Label[fields.size()];
        Label labelForInvalidTypes = new Label();
        boolean hasAnyBadTypeLabel = false;
        for (int i = 0, n = labels.length; i < n; i++) {
            if (Type.getType(fields.get(i).getType()).equals(primitiveType))
                labels[i] = new Label();
            else {
                labels[i] = labelForInvalidTypes;
                hasAnyBadTypeLabel = true;
            }
        }
        Label defaultLabel = new Label();
        mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

        for (int i = 0, n = labels.length; i < n; i++) {
            Field field = fields.get(i);
            if (!labels[i].equals(labelForInvalidTypes)) {
                mv.visitLabel(labels[i]);
                mv.visitFrame(F_SAME, 0, null, 0, null);
                if (isStatic(field.getModifiers())) {
                    mv.visitFieldInsn(GETSTATIC, classNameInternal, field.getName(), typeNameInternal);
                } else {
                    mv.visitVarInsn(ALOAD, 1);
                    mv.visitTypeInsn(CHECKCAST, classNameInternal);
                    mv.visitFieldInsn(GETFIELD, classNameInternal, field.getName(), typeNameInternal);
                }
                mv.visitInsn(returnValueInstruction);
            }
        }
        // Rest of fields: different type
        if (hasAnyBadTypeLabel) {
            mv.visitLabel(labelForInvalidTypes);
            mv.visitFrame(F_SAME, 0, null, 0, null);
            insertThrowExceptionForFieldType(mv, primitiveType.getClassName());
        }
        // Default: field not found
        mv.visitLabel(defaultLabel);
        mv.visitFrame(F_SAME, 0, null, 0, null);
    }
    mv = insertThrowExceptionForFieldNotFound(mv);
    mv.visitMaxs(maxStack, 3);
    mv.visitEnd();

}

From source file:org.apache.asterix.runtime.evaluators.staticcodegen.EvaluatorVisitor.java

License:Apache License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    MethodVisitor mv = cv.visitMethod(access, name, desc, signature, exceptions);
    if (!METHOD_IDENTIFIER.equals(new MethodIdentifier(name, desc, signature))) {
        return mv;
    }/* w  w w.  j av  a 2 s . c om*/
    if (mv != null) {
        return new MethodVisitor(Opcodes.ASM5, mv) {
            private FieldInsnNode fieldAccessNode = null;
            private List<AbstractInsnNode> instructionsAfterFieldAccess = new ArrayList<>();

            @Override
            public void visitFieldInsn(int opcode, String owner, String name, String desc) {
                mv.visitFieldInsn(opcode, owner, name, desc);
                fieldAccessNode = new FieldInsnNode(opcode, owner, name, desc);
                instructionsAfterFieldAccess.clear();
            }

            @Override
            public void visitIincInsn(int var, int increment) {
                if (fieldAccessNode != null) {
                    instructionsAfterFieldAccess.add(new IincInsnNode(var, increment));
                }
                super.visitIincInsn(var, increment);
            }

            @Override
            public void visitInsn(int opcode) {
                if (fieldAccessNode != null) {
                    instructionsAfterFieldAccess.add(new InsnNode(opcode));
                }
                super.visitInsn(opcode);
            }

            @Override
            public void visitIntInsn(int opcode, int operand) {
                if (fieldAccessNode != null) {
                    instructionsAfterFieldAccess.add(new IntInsnNode(opcode, operand));
                }
                super.visitIntInsn(opcode, operand);
            }

            @Override
            public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
                mv.visitMethodInsn(opcode, owner, name, desc, itf);
                if (fieldAccessNode == null
                        || !METHOD_IDENTIFIER.equals(new MethodIdentifier(name, desc, signature))) {
                    return;
                }
                // Loads "this".
                mv.visitVarInsn(Opcodes.ALOAD, 0);
                // Replays the field access instruction.
                fieldAccessNode.accept(mv);

                // Replays other instruction between the field access and the evaluator call.
                for (AbstractInsnNode instruction : instructionsAfterFieldAccess) {
                    instruction.accept(mv);
                }

                // Loads the result IPointable.
                mv.visitVarInsn(Opcodes.ALOAD, 2);

                // Invokes the null check method.
                mv.visitMethodInsn(Opcodes.INVOKESTATIC, TYPECHECK_CLASS, IS_NULL, TYPECHECK_METHOD_DESC,
                        false);
                Label notNull = new Label();
                // Adds the if branch.
                mv.visitJumpInsn(Opcodes.IFEQ, notNull);
                mv.visitInsn(Opcodes.RETURN);
                mv.visitLabel(notNull);
                mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
            }
        };
    }
    return null;
}

From source file:org.apache.asterix.runtime.evaluators.staticcodegen.RenameClassVisitor.java

License:Apache License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    MethodVisitor mv = cv.visitMethod(access, name, applyMapping(desc), applyMapping(signature), exceptions);
    if (mv != null) {
        return new MethodVisitor(Opcodes.ASM5, mv) {

            @Override/*from   w  w w. ja v a  2 s  . c o m*/
            public void visitFieldInsn(int opcode, String owner, String name, String desc) {
                mv.visitFieldInsn(opcode, applyMapping(owner), applyMapping(name), applyMapping(desc));
            }

            @Override
            public void visitMethodInsn(int opcode, String owner, String name, String desc, boolean itf) {
                mv.visitMethodInsn(opcode, applyMapping(owner), name, applyMapping(desc), itf);
            }

            @Override
            public void visitLocalVariable(String name, String desc, String signature, Label start, Label end,
                    int index) {
                mv.visitLocalVariable(name, applyMapping(desc), applyMapping(signature), start, end, index);
            }

            @Override
            public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) {
                if (local != null) {
                    for (int index = 0; index < local.length; ++index) {
                        if (local[index] instanceof String) {
                            local[index] = applyMapping((String) local[index]);
                        }
                    }
                }
                mv.visitFrame(type, nLocal, local, nStack, stack);
            }

            @Override
            public void visitTypeInsn(int opcode, String type) {
                mv.visitTypeInsn(opcode, applyMapping(type));
            }

        };
    }
    return null;
}

From source file:org.apache.s4.core.gen.OverloadDispatcherGenerator.java

License:Apache License

private void generateEventDispatchMethod(ClassWriter cw, String dispatchMethodName,
        List<Hierarchy> eventHierarchies, String processEventMethodName) {
    MethodVisitor mv2 = cw.visitMethod(ACC_PUBLIC, dispatchMethodName,
            "(" + Type.getType(ProcessingElement.class).getDescriptor()
                    + Type.getType(Event.class).getDescriptor() + ")V",
            null, null);/*from  w  ww .  j  a va  2s.  com*/
    mv2.visitCode();
    Label l3 = new Label();
    mv2.visitLabel(l3);
    mv2.visitVarInsn(ALOAD, 1);
    mv2.visitTypeInsn(CHECKCAST, Type.getInternalName(targetClass));
    mv2.visitVarInsn(ASTORE, 3);
    boolean first = true;
    Label aroundLabel = new Label();
    for (Hierarchy hierarchy : eventHierarchies) {
        if (first) {
            Label l4 = new Label();
            mv2.visitLabel(l4);
        }
        mv2.visitVarInsn(ALOAD, 2);
        mv2.visitTypeInsn(INSTANCEOF, Type.getInternalName(hierarchy.getTop()));

        Label l5 = new Label();
        mv2.visitJumpInsn(IFEQ, l5);

        Label l6 = new Label();
        mv2.visitLabel(l6);
        mv2.visitVarInsn(ALOAD, 3);
        mv2.visitVarInsn(ALOAD, 2);
        mv2.visitTypeInsn(CHECKCAST, Type.getInternalName(hierarchy.getTop()));
        mv2.visitMethodInsn(INVOKEVIRTUAL, Type.getInternalName(targetClass), processEventMethodName,
                "(" + Type.getDescriptor(hierarchy.getTop()) + ")V");
        mv2.visitJumpInsn(Opcodes.GOTO, aroundLabel);
        mv2.visitLabel(l5);

        if (first) {
            mv2.visitFrame(F_APPEND, 1, new Object[] { Type.getInternalName(targetClass) }, 0, null);
            first = false;
        } else {
            mv2.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
        }
    }
    addErrorLogStatement(mv2);
    if (eventHierarchies.size() > 0) {
        mv2.visitLabel(aroundLabel);
        mv2.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    }
    mv2.visitInsn(RETURN);
    Label l8 = new Label();
    mv2.visitLabel(l8);
    mv2.visitLocalVariable("pe", Type.getDescriptor(ProcessingElement.class), null, l3, l8, 1);
    mv2.visitLocalVariable("event", Type.getDescriptor(Event.class), null, l3, l8, 2);
    mv2.visitLocalVariable("typedPE", Type.getDescriptor(targetClass), null, l3, l8, 3);
    mv2.visitMaxs(4, 4);
    mv2.visitEnd();
}

From source file:org.batoo.jpa.core.impl.instance.Enhancer.java

License:Open Source License

private static void createMethodCheck(final String enhancedClassName, final String descEnhancer,
        final ClassWriter cw) {
    final MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PRIVATE, Enhancer.METHOD_ENHANCED_CHECK,
            Enhancer.makeDescription(Void.TYPE), null, null);
    mv.visitCode();/*  ww  w .  j  a va2 s .c  o m*/

    final Label lCheckInternal = new Label();
    final Label lCheckInitialized = new Label();
    final Label lReturn = new Label();
    final Label lFind = new Label();
    final Label lInitialized = new Label();
    final Label lChanged = new Label();
    final Label lOut = new Label();

    // if (!this.__enhanced__$$__internal) { return }
    mv.visitLabel(lCheckInternal);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INTERNAL,
            Enhancer.DESCRIPTOR_BOOLEAN);
    mv.visitJumpInsn(Opcodes.IFEQ, lCheckInitialized);
    mv.visitInsn(Opcodes.RETURN);

    // if (!this.__enhanced__$$__initialized) {
    mv.visitLabel(lCheckInitialized);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);
    mv.visitJumpInsn(Opcodes.IFNE, lChanged);

    //     if (this.__enhanced_$$__session == null)
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);
    mv.visitJumpInsn(Opcodes.IFNONNULL, lFind);

    //         throw new PersistenceException("No session to initialize the instance");
    mv.visitTypeInsn(Opcodes.NEW, Enhancer.INTERNAL_PERSISTENCE_EXCEPTION);
    mv.visitInsn(Opcodes.DUP);
    mv.visitLdcInsn("No session to initialize the instance");
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, Enhancer.INTERNAL_PERSISTENCE_EXCEPTION,
            Enhancer.CONSTRUCTOR_INIT, Enhancer.makeDescription(Void.TYPE, String.class));
    mv.visitInsn(Opcodes.ATHROW);

    //       this.__enhanced_$$__session.getEntityManager().find(this.__enhanced_$$__type, this.__enhanced__$$__id);
    mv.visitLabel(lFind);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Enhancer.INTERNAL_SESSION, Enhancer.METHOD_GET_ENTITY_MANAGER,
            Enhancer.makeDescription(EntityManagerImpl.class));
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_TYPE,
            Enhancer.DESCRIPTOR_CLASS);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_ID,
            Enhancer.DESCRIPTOR_OBJECT);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Enhancer.INTERNAL_ENTITY_MANAGER, Enhancer.METHOD_FIND,
            Enhancer.makeDescription(Object.class, Class.class, Object.class));
    mv.visitInsn(Opcodes.POP);

    //   this.__enhanced__$$__initialized = true;
    mv.visitLabel(lInitialized);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_INITIALIZED,
            Enhancer.DESCRIPTOR_BOOLEAN);

    // if (this.__enhanced_$$__session != null)
    mv.visitLabel(lChanged);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_SESSION,
            Enhancer.DESCRIPTOR_SESSION);
    mv.visitJumpInsn(Opcodes.IFNULL, lReturn);

    //     this.__enhanced__$$__managedInstance.changed();
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, enhancedClassName, Enhancer.FIELD_ENHANCED_MANAGED_INSTANCE,
            Enhancer.DESCRIPTOR_MANAGED_INSTANCE);
    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Enhancer.INTERNAL_MANAGED_INSTANCE, Enhancer.METHOD_CHANGED,
            Enhancer.makeDescription(Void.TYPE));

    // return;
    mv.visitLabel(lReturn);
    mv.visitFrame(Opcodes.F_NEW, 1, new Object[] { enhancedClassName }, 0, new Object[] {});
    mv.visitInsn(Opcodes.RETURN);

    mv.visitLabel(lOut);
    mv.visitLocalVariable(Enhancer.THIS, descEnhancer, null, lCheckInternal, lOut, 0);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:org.boretti.drools.integration.drools5.DroolsClassVisitor.java

License:Open Source License

@Override
public void visitEnd() {
    FieldVisitor fv = null;// www.  j  av a 2  s  .c o m
    if (isNeedChangeForBoth()) {
        fv = super.visitField(Opcodes.ACC_PRIVATE, DROOLS_FIELD_NAME, Type.BOOLEAN_TYPE.getDescriptor(), null,
                null);
        if (fv != null) {
            AnnotationVisitor av = fv.visitAnnotation(Type.getType(Generated.class).getDescriptor(), true);
            AnnotationVisitor value = av.visitArray("value");
            value.visit("", "Generated by Drools5IntegrationHelper Maven plugin");
            value.visitEnd();
            av.visit("date", new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssz").format(current));
            av.visitEnd();
            fv.visitEnd();
        }
    }
    if (isNeedChangeForField()) {
        fv = super.visitField(Opcodes.ACC_PRIVATE, DROOLS_FIELD_RULE,
                Type.getType(RuleBase.class).getDescriptor(), null, null);
        if (fv != null) {
            AnnotationVisitor av = fv.visitAnnotation(Type.getType(Generated.class).getDescriptor(), true);
            AnnotationVisitor value = av.visitArray("value");
            value.visit("", "Generated by Drools5IntegrationHelper Maven plugin");
            value.visitEnd();
            av.visit("date", new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssz").format(current));
            av.visitEnd();
            fv.visitEnd();
        }
        MethodVisitor mv = super.visitMethod(Opcodes.ACC_PRIVATE, DROOLS_METHOD_RUN, "()V", null, null);
        AnnotationVisitor av = mv.visitAnnotation(Type.getType(Generated.class).getDescriptor(), true);
        AnnotationVisitor value = av.visitArray("value");
        value.visit("", "Generated by Drools5IntegrationHelper Maven plugin");
        value.visitEnd();
        av.visit("date", new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssz").format(current));
        av.visitEnd();
        mv.visitCode();
        Label start = new Label();
        mv.visitLabel(start);
        Label doIt = new Label();
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, Type.getObjectType(me).getInternalName(), DROOLS_FIELD_NAME,
                Type.BOOLEAN_TYPE.getDescriptor());
        mv.visitJumpInsn(Opcodes.IFEQ, doIt);
        mv.visitInsn(Opcodes.RETURN);
        mv.visitLabel(doIt);
        mv.visitFrame(Opcodes.F_SAME, 1, new Object[] { Type.getObjectType(me).getInternalName() }, 0,
                new Object[] {});
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitFieldInsn(Opcodes.GETFIELD, Type.getObjectType(me).getInternalName(), DROOLS_FIELD_RULE,
                Type.getType(RuleBase.class).getDescriptor());
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getType(RuleBase.class).getInternalName(),
                "newStatelessSession", "()Lorg/drools/StatelessSession;");
        mv.visitInsn(Opcodes.DUP);
        mv.visitLdcInsn(FIELD_NAME_LOGGER);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getType(Object.class).getInternalName(), "getClass",
                "()Ljava/lang/Class;");
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, Type.getType(org.apache.log4j.Logger.class).getInternalName(),
                "getLogger", "(Ljava/lang/Class;)Lorg/apache/log4j/Logger;");
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getType(StatelessSession.class).getInternalName(),
                "setGlobal", "(Ljava/lang/String;Ljava/lang/Object;)V");
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, Type.getType(StatelessSession.class).getInternalName(),
                "execute", "(Ljava/lang/Object;)V");
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitInsn(Opcodes.ICONST_1);
        mv.visitFieldInsn(Opcodes.PUTFIELD, Type.getObjectType(me).getInternalName(), DROOLS_FIELD_NAME,
                Type.BOOLEAN_TYPE.getDescriptor());
        mv.visitInsn(Opcodes.RETURN);
        Label end = new Label();
        mv.visitLabel(end);
        mv.visitLocalVariable("this", Type.getObjectType(me).getDescriptor(), null, start, end, 0);
        mv.visitMaxs(4, 1);
        mv.visitEnd();
    }
    super.visitEnd();
}

From source file:org.chromium.bytecode.CustomResourcesClassAdapter.java

License:Open Source License

/**
 * Generates:/*from  w  ww  .  ja v a2  s  .c om*/
 *
 * <pre>
 * public Context createConfigurationContext(Configuration configuration) {
 *   // createConfigurationContext does not exist before API level 17.
 *   if (Build.VERSION.SDK_INT < 17) return null;
 *   if (!BuildHooksAndroid.isEnabled()) return super.createConfigurationContext(configuration);
 *   return BuildHooksAndroid.createConfigurationContext(
 *          super.createConfigurationContext(configuration));
 * }
 * </pre>
 * }
 */
private void delegateCreateConfigurationContext() {
    String methodName = "createConfigurationContext";
    String methodDescriptor = TypeUtils.getMethodDescriptor(CONTEXT, CONFIGURATION);
    MethodVisitor mv = super.visitMethod(ACC_PUBLIC, methodName, methodDescriptor, null, null);
    mv.visitCode();
    mv.visitFieldInsn(GETSTATIC, "android/os/Build$VERSION", "SDK_INT", INT);
    mv.visitIntInsn(BIPUSH, 17);
    Label l0 = new Label();
    mv.visitJumpInsn(IF_ICMPGE, l0);
    mv.visitInsn(ACONST_NULL);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, IS_ENABLED_METHOD, IS_ENABLED_DESCRIPTOR, false);
    Label l1 = new Label();
    mv.visitJumpInsn(IFNE, l1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, mSuperClassName, methodName, methodDescriptor, false);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l1);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, mSuperClassName, methodName, methodDescriptor, false);
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, methodName,
            TypeUtils.getMethodDescriptor(CONTEXT, CONTEXT), false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(2, 2);
    mv.visitEnd();
}

From source file:org.chromium.bytecode.CustomResourcesClassAdapter.java

License:Open Source License

/**
 * Generates:/*from   ww  w .  j av a  2  s  .co  m*/
 *
 * <pre>
 * public void setTheme(int theme) {
 *   if (!BuildHooksAndroid.isEnabled()) {
 *     super.setTheme(theme);
 *     return;
 *   }
 *   BuildHooksAndroid.setTheme(this, theme);
 * }
 * </pre>
 */
private void delegateSetTheme() {
    String methodName = "setTheme";
    String methodDescriptor = TypeUtils.getMethodDescriptor(VOID, INT);
    String buildHooksMethodDescriptor = TypeUtils.getMethodDescriptor(VOID, CONTEXT, INT);
    MethodVisitor mv = super.visitMethod(ACC_PUBLIC, methodName, methodDescriptor, null, null);
    mv.visitCode();
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, IS_ENABLED_METHOD, IS_ENABLED_DESCRIPTOR, false);
    Label l0 = new Label();
    mv.visitJumpInsn(IFNE, l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ILOAD, 1);
    mv.visitMethodInsn(INVOKESPECIAL, mSuperClassName, methodName, methodDescriptor, false);
    mv.visitInsn(RETURN);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitVarInsn(ILOAD, 1);
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, methodName, buildHooksMethodDescriptor, false);
    mv.visitInsn(RETURN);
    mv.visitMaxs(2, 2);
    mv.visitEnd();
}

From source file:org.chromium.bytecode.CustomResourcesClassAdapter.java

License:Open Source License

/**
 * Generates://  www . j  ava2 s . c om
 *
 * <pre>
 * public returnType methodName() {
 *   if (!BuildHooksAndroid.isEnabled()) return super.methodName();
 *   return BuildHooksAndroid.methodName(this);
 * }
 * </pre>
 */
private void delegateGet(String methodName, String returnType) {
    String getMethodDescriptor = TypeUtils.getMethodDescriptor(returnType);
    String buildHooksGetMethodDescriptor = TypeUtils.getMethodDescriptor(returnType, CONTEXT);
    MethodVisitor mv = super.visitMethod(ACC_PUBLIC, methodName, getMethodDescriptor, null, null);
    mv.visitCode();
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, IS_ENABLED_METHOD, IS_ENABLED_DESCRIPTOR, false);
    Label l0 = new Label();
    mv.visitJumpInsn(IFNE, l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, mSuperClassName, methodName, getMethodDescriptor, false);
    mv.visitInsn(ARETURN);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESTATIC, BUILD_HOOKS_ANDROID, methodName, buildHooksGetMethodDescriptor, false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
}

From source file:org.eclipse.core.databinding.pojo.bindable.internal.asm.ClassBindable.java

License:Open Source License

/**
 * Add the implementation of the _bindable_getPropertyChangeSupport method
 * to the class. The result is a method that looks as follows:
 * /* w  ww .j  a  v a  2s. c o m*/
 * private PropertyChangeSupport _bindable_getPropertyChangeSupport() { if
 * (_bindable_propertyChangeSupport == null) {
 * this._bindable_propertyChangeSupport = new PropertyChangeSupport( this);
 * } return _bindable_propertyChangeSupport; }
 */
public void addGetPropertyChangeSupport() {

    // private PropertyChangeSupport _bindable_getPropertyChangeSupport()
    MethodVisitor mv = cv.visitMethod(ACC_PRIVATE, PCS_GETTER, "()" + PCS_SIGNATURE, null, null);
    mv.visitCode();

    // if (_bindable_propertyChangeSupport == null)
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, PCS_FIELD, PCS_SIGNATURE);
    Label l0 = new Label();
    mv.visitJumpInsn(IFNONNULL, l0);

    // this._bindable_propertyChangeSupport = new PropertyChangeSupport(
    // this);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitTypeInsn(NEW, PCS_SHORT_SIGNATURE);
    mv.visitInsn(DUP);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, PCS_SHORT_SIGNATURE, "<init>", "(Ljava/lang/Object;)V");
    mv.visitFieldInsn(PUTFIELD, className, PCS_FIELD, PCS_SIGNATURE);
    mv.visitLabel(l0);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);

    // return _bindable_propertyChangeSupport;
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, className, PCS_FIELD, PCS_SIGNATURE);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(4, 1);

}