Example usage for org.objectweb.asm MethodVisitor visitEnd

Introduction

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

Prototype

public void visitEnd() 

Source Link

Document

Visits the end of the method.

Usage

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeStructGenerator.java

License:Apache License

private void makeGetter(ClassWriter classWriter, String owner, String name) {
    int accessFlag = name.startsWith("_") ? ACC_PRIVATE : ACC_PUBLIC;
    MethodVisitor visitor = classWriter.visitMethod(accessFlag, name, "()Ljava/lang/Object;", null, null);
    visitor.visitCode();// ww  w  .j a  v  a 2  s.  co  m
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitFieldInsn(GETFIELD, owner, name, "Ljava/lang/Object;");
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

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From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void initStaticFields(ClassWriter cw, PackageAndClass unionType,
        Map<String, PackageAndClass> staticFields) {
    MethodVisitor mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
    mv.visitCode();/*  ww w  .  j a v a 2  s .  com*/
    for (String attr : staticFields.keySet()) {
        mv.visitTypeInsn(NEW, staticFields.get(attr).toJVMType());
        mv.visitInsn(DUP);
        mv.visitMethodInsn(INVOKESPECIAL, staticFields.get(attr).toJVMType(), "<init>", "()V", false);
        mv.visitFieldInsn(PUTSTATIC, unionType.toJVMType(), attr, unionType.toJVMRef());
    }
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

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From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void makeStaticFactory(ClassWriter cw, Union.Value value) {
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, value.getName(),
            argsSignature(value.getMembers().size()) + value.getUnion().getPackageAndClass().toJVMRef(), null,
            null);//from  ww w  .  j  a v  a 2s  . c  o  m
    mv.visitCode();
    mv.visitTypeInsn(NEW, value.getPackageAndClass().toJVMType());
    mv.visitInsn(DUP);
    for (int i = 0; i < value.getMembers().size(); i++) {
        mv.visitVarInsn(ALOAD, i);
    }
    mv.visitMethodInsn(INVOKESPECIAL, value.getPackageAndClass().toJVMType(), "<init>",
            argsSignature(value.getMembers().size()) + "V", false);
    mv.visitInsn(ARETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

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From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void makeDefaultConstructor(ClassWriter classWriter, String superCls) {
    MethodVisitor visitor = classWriter.visitMethod(ACC_PROTECTED, "<init>", "()V", null, null);
    visitor.visitCode();/* w ww  .j  av  a  2s  . com*/
    visitor.visitVarInsn(ALOAD, 0);
    visitor.visitMethodInsn(INVOKESPECIAL, superCls, "<init>", "()V", false);
    visitor.visitInsn(RETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

---

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void makeToString(ClassWriter classWriter, Union.Value value) {
    MethodVisitor visitor = classWriter.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
    visitor.visitCode();/*www .  j  av  a 2s.com*/
    if (!value.hasMembers()) {
        visitor.visitLdcInsn(
                "union " + value.getUnion().getPackageAndClass().className() + "." + value.getName());
    } else {
        visitor.visitTypeInsn(NEW, "java/lang/StringBuilder");
        visitor.visitInsn(DUP);
        visitor.visitLdcInsn(
                "union " + value.getUnion().getPackageAndClass().className() + "." + value.getName() + "{");
        visitor.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V",
                false);
        visitor.visitVarInsn(ASTORE, 1);
        boolean first = true;
        for (String member : value.getMembers()) {
            visitor.visitVarInsn(ALOAD, 1);
            visitor.visitLdcInsn((first ? "" : ", ") + member + "=");
            visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                    "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
            visitor.visitInsn(POP);

            visitor.visitVarInsn(ALOAD, 1);
            visitor.visitVarInsn(ALOAD, 0);
            visitor.visitFieldInsn(GETFIELD, value.getPackageAndClass().toJVMType(), member,
                    "Ljava/lang/Object;");
            visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                    "(Ljava/lang/Object;)Ljava/lang/StringBuilder;", false);
            visitor.visitInsn(POP);
            first = false;
        }

        visitor.visitVarInsn(ALOAD, 1);
        visitor.visitLdcInsn("}");
        visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "append",
                "(Ljava/lang/String;)Ljava/lang/StringBuilder;", false);
        visitor.visitInsn(POP);
        visitor.visitVarInsn(ALOAD, 1);
        visitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;",
                false);
    }
    visitor.visitInsn(ARETURN);
    visitor.visitMaxs(0, 0);
    visitor.visitEnd();
}

---

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void makeEquals(ClassWriter cw, Union.Value value) {
    String target = value.getPackageAndClass().toJVMType();
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "equals", "(Ljava/lang/Object;)Z", null, null);
    Label notSameInstance = new Label();
    Label notNull = new Label();
    Label sameType = new Label();
    Label allAttrsEquals = new Label();
    Label attrNotEqual = new Label();
    mv.visitCode();/*ww w . j  a  va  2  s  .  c o m*/

    // if (other == this) { return true; }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitJumpInsn(IF_ACMPNE, notSameInstance);
    mv.visitInsn(ICONST_1);
    mv.visitInsn(IRETURN);
    mv.visitLabel(notSameInstance);

    // if (other == null) { return false; }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitJumpInsn(IFNONNULL, notNull);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitLabel(notNull);

    // if (!(other instanceof <value>)) { return false; }
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(INSTANCEOF, target);
    mv.visitJumpInsn(IFNE, sameType);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IRETURN);
    mv.visitLabel(sameType);

    // cast other to <value>
    mv.visitVarInsn(ALOAD, 1);
    mv.visitTypeInsn(CHECKCAST, target);
    mv.visitVarInsn(ASTORE, 2);

    // java.util.Objects.equals(<member>, other.<member>)
    for (String member : value.getMembers()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, target, member, "Ljava/lang/Object;");
        mv.visitVarInsn(ALOAD, 2);
        mv.visitFieldInsn(GETFIELD, target, member, "Ljava/lang/Object;");
        mv.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "equals",
                "(Ljava/lang/Object;Ljava/lang/Object;)Z", false);
        mv.visitJumpInsn(IFEQ, attrNotEqual);
    }
    mv.visitInsn(ICONST_1);
    mv.visitJumpInsn(GOTO, allAttrsEquals);
    mv.visitLabel(attrNotEqual);
    mv.visitInsn(ICONST_0);
    mv.visitLabel(allAttrsEquals);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

---

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void makeHashCode(ClassWriter cw, Union.Value value) {
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "hashCode", "()I", null, null);
    mv.visitCode();//from   w  w w.  j  a v  a  2  s . com
    loadInteger(mv, value.getMembers().size());
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    int i = 0;
    for (String member : value.getMembers()) {
        mv.visitInsn(DUP);
        loadInteger(mv, i);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, value.getPackageAndClass().toJVMType(), member, "Ljava/lang/Object;");
        mv.visitInsn(AASTORE);
    }
    mv.visitMethodInsn(INVOKESTATIC, "java/util/Objects", "hash", "([Ljava/lang/Object;)I", false);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

---

From source file:fr.insalyon.citi.golo.compiler.JavaBytecodeUnionGenerator.java

License:Apache License

private void makeValuedConstructor(ClassWriter cw, Union.Value value) {
    MethodVisitor mv = cw.visitMethod(ACC_PROTECTED, "<init>", argsSignature(value.getMembers().size()) + "V",
            null, null);//from ww w .  ja  va2s.c  o  m
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, value.getUnion().getPackageAndClass().toJVMType(), "<init>", "()V",
            false);
    int idx = 1;
    for (String member : value.getMembers()) {
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, idx++);
        mv.visitFieldInsn(PUTFIELD, value.getPackageAndClass().toJVMType(), member, "Ljava/lang/Object;");
    }
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

---

From source file:fr.insalyon.citi.golo.runtime.adapters.JavaBytecodeAdapterGenerator.java

License:Apache License

private void makeFrontendOverrides(ClassWriter classWriter, AdapterDefinition adapterDefinition) {
    for (Method method : getAllVirtualMethods(adapterDefinition)) {
        int access = isPublic(method.getModifiers()) ? ACC_PUBLIC : ACC_PROTECTED;
        if (method.isVarArgs()) {
            access = access & ACC_VARARGS;
        }//from   ww  w.  j ava2s. c  o  m
        String name = method.getName();
        String descriptor = Type.getMethodDescriptor(method);
        Class<?>[] exceptionTypes = method.getExceptionTypes();
        String[] exceptions = new String[exceptionTypes.length];
        for (int i = 0; i < exceptionTypes.length; i++) {
            exceptions[i] = Type.getInternalName(exceptionTypes[i]);
        }
        MethodVisitor methodVisitor = classWriter.visitMethod(access, name, descriptor, null, exceptions);
        methodVisitor.visitCode();
        Class<?>[] parameterTypes = method.getParameterTypes();
        Type[] indyTypes = new Type[parameterTypes.length + 1];
        indyTypes[0] = Type.getType(Object.class);
        methodVisitor.visitVarInsn(ALOAD, 0);
        int argIndex = 1;
        for (int i = 0; i < parameterTypes.length; i++) {
            argIndex = loadArgument(methodVisitor, parameterTypes[i], argIndex);
            indyTypes[i + 1] = Type.getType(parameterTypes[i]);
        }
        methodVisitor.visitInvokeDynamicInsn(method.getName(),
                Type.getMethodDescriptor(Type.getReturnType(method), indyTypes), ADAPTER_HANDLE);
        makeReturn(methodVisitor, method.getReturnType());
        methodVisitor.visitMaxs(0, 0);
        methodVisitor.visitEnd();
    }
}

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From source file:fr.insalyon.citi.golo.runtime.adapters.JavaBytecodeAdapterGenerator.java

License:Apache License

private void makeConstructors(ClassWriter classWriter, AdapterDefinition adapterDefinition) {
    try {//from  w w w. j  a v  a2  s.c  o m
        Class<?> parentClass = Class.forName(adapterDefinition.getParent(), true,
                adapterDefinition.getClassLoader());
        for (Constructor constructor : parentClass.getDeclaredConstructors()) {
            if (Modifier.isPublic(constructor.getModifiers())
                    || Modifier.isProtected(constructor.getModifiers())) {
                Class[] parameterTypes = constructor.getParameterTypes();
                Type[] adapterParameterTypes = new Type[parameterTypes.length + 1];
                adapterParameterTypes[0] = Type.getType(AdapterDefinition.class);
                for (int i = 1; i < adapterParameterTypes.length; i++) {
                    adapterParameterTypes[i] = Type.getType(parameterTypes[i - 1]);
                }
                String descriptor = Type.getMethodDescriptor(Type.VOID_TYPE, adapterParameterTypes);
                MethodVisitor methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", descriptor, null,
                        null);
                methodVisitor.visitCode();
                methodVisitor.visitVarInsn(ALOAD, 0);
                methodVisitor.visitVarInsn(ALOAD, 1);
                methodVisitor.visitFieldInsn(PUTFIELD, jvmType(adapterDefinition.getName()), DEFINITION_FIELD,
                        "Lfr/insalyon/citi/golo/runtime/adapters/AdapterDefinition;");
                methodVisitor.visitVarInsn(ALOAD, 0);
                int argIndex = 2;
                for (Class parameterType : parameterTypes) {
                    argIndex = loadArgument(methodVisitor, parameterType, argIndex);
                }
                methodVisitor.visitMethodInsn(INVOKESPECIAL, Type.getInternalName(parentClass), "<init>",
                        Type.getConstructorDescriptor(constructor));
                methodVisitor.visitInsn(RETURN);
                methodVisitor.visitMaxs(0, 0);
                methodVisitor.visitEnd();
            }
        }
    } catch (ClassNotFoundException e) {
        throw new RuntimeException(e);
    }
}

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