Examples of org.apache.tapestry5.internal.plastic.asm.MethodVisitor

Package org.apache.tapestry5.internal.plastic.asm

Examples of org.apache.tapestry5.internal.plastic.asm.MethodVisitor

org.apache.tapestry5.internal.plastic.asm.MethodVisitor
A visitor to visit a Java method. The methods of this class must be called in the following order: [ visitAnnotationDefault ] ( visitAnnotation | visitParameterAnnotation | visitAttribute )* [ visitCode ( visitFrame | visitXInsn | visitLabel | visitTryCatchBlock | visitLocalVariable | visitLineNumber )* visitMaxs ] visitEnd. In addition, the visitXInsn and visitLabel methods must be called in the sequential order of the bytecode instructions of the visited code, visitTryCatchBlock must be called before the labels passed as arguments have been visited, and the visitLocalVariable and visitLineNumber methods must be called after the labels passed as arguments have been visited. @author Eric Bruneton


    @Override
    public MethodVisitor visitMethod(int access, String name, String desc,
            String signature, String[] exceptions) {
        String newDesc = remapper.mapMethodDesc(desc);
        MethodVisitor mv = super.visitMethod(access, remapper.mapMethodName(
                className, name, desc), newDesc, remapper.mapSignature(
                signature, false),
                exceptions == null ? null : remapper.mapTypes(exceptions));
        return mv == null ? null : createRemappingMethodAdapter(access,
                newDesc, mv);

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     *            a class visitor.
     */
    public void accept(final ClassVisitor cv) {
        String[] exceptions = new String[this.exceptions.size()];
        this.exceptions.toArray(exceptions);
        MethodVisitor mv = cv.visitMethod(access, name, desc, signature,
                exceptions);
        if (mv != null) {
            accept(mv);
        }
    }

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    @Override
    public MethodVisitor visitMethod(final int access, final String name,
            final String desc, final String signature, final String[] exceptions) {
        Printer p = this.p.visitMethod(access, name, desc, signature,
                exceptions);
        MethodVisitor mv = cv == null ? null : cv.visitMethod(access, name,
                desc, signature, exceptions);
        return new TraceMethodVisitor(mv, p);
    }

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        @Override
        public MethodVisitor visitMethod(final int access, final String name,
                final String desc, final String signature,
                final String[] exceptions) {
            method = name + desc;
            return new MethodVisitor(Opcodes.ASM5) {
                @Override
                public void visitFieldInsn(final int opcode,
                        final String owner, final String name, final String desc) {
                    check(owner, name);
                }

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        if ("-".equals(s)) {
            return null;
        }
        if (name.equals("<clinit>") && !isInterface) {
            hasClinitMethod = true;
            MethodVisitor mv = super.visitMethod(access, name, desc, null,
                    exceptions);
            return new MethodVisitor(Opcodes.ASM5, mv) {
                @Override
                public void visitCode() {
                    super.visitCode();
                    mv.visitMethodInsn(Opcodes.INVOKESTATIC, clsName,
                            "_clinit_", "()V", false);
                }
            };
        }

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    @Override
    public void visitEnd() {
        if (syntheticClassFields.isEmpty()) {
            if (hasClinitMethod) {
                MethodVisitor mv = cv.visitMethod(Opcodes.ACC_STATIC
                        | Opcodes.ACC_SYNTHETIC, "_clinit_", "()V", null, null);
                mv.visitCode();
                mv.visitInsn(Opcodes.RETURN);
                mv.visitMaxs(0, 0);
                mv.visitEnd();
            }
        } else {
            MethodVisitor mv = cv.visitMethod(Opcodes.ACC_STATIC
                    | Opcodes.ACC_SYNTHETIC, "class$",
                    "(Ljava/lang/String;)Ljava/lang/Class;", null, null);
            mv.visitCode();
            Label l0 = new Label();
            Label l1 = new Label();
            Label l2 = new Label();
            mv.visitTryCatchBlock(l0, l1, l2,
                    "java/lang/ClassNotFoundException");
            mv.visitLabel(l0);
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Class",
                    "forName", "(Ljava/lang/String;)Ljava/lang/Class;", false);
            mv.visitLabel(l1);
            mv.visitInsn(Opcodes.ARETURN);
            mv.visitLabel(l2);
            mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
                    "java/lang/ClassNotFoundException", "getMessage",
                    "()Ljava/lang/String;", false);
            mv.visitVarInsn(Opcodes.ASTORE, 1);
            mv.visitTypeInsn(Opcodes.NEW, "java/lang/NoClassDefFoundError");
            mv.visitInsn(Opcodes.DUP);
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            mv.visitMethodInsn(Opcodes.INVOKESPECIAL,
                    "java/lang/NoClassDefFoundError", "<init>",
                    "(Ljava/lang/String;)V", false);
            mv.visitInsn(Opcodes.ATHROW);
            mv.visitMaxs(3, 2);
            mv.visitEnd();


            if (hasClinitMethod) {
                mv = cv.visitMethod(Opcodes.ACC_STATIC | Opcodes.ACC_PRIVATE,
                        "_clinit_", "()V", null, null);
            } else {
                mv = cv.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V",
                        null, null);
            }
            for (String ldcName : syntheticClassFields) {
                String fieldName = "class$" + ldcName.replace('/', '$');
                mv.visitLdcInsn(ldcName.replace('/', '.'));
                mv.visitMethodInsn(Opcodes.INVOKESTATIC, clsName, "class$",
                        "(Ljava/lang/String;)Ljava/lang/Class;", false);
                mv.visitFieldInsn(Opcodes.PUTSTATIC, clsName, fieldName,
                        "Ljava/lang/Class;");
            }
            mv.visitInsn(Opcodes.RETURN);
            mv.visitMaxs(1, 0);
            mv.visitEnd();
        }
        super.visitEnd();
    }

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    }


    @Override
    public MethodVisitor visitMethod(final int access, final String name,
            final String desc, final String signature, final String[] exceptions) {
        MethodVisitor mv;
        if ("<clinit>".equals(name)) {
            int a = Opcodes.ACC_PRIVATE + Opcodes.ACC_STATIC;
            String n = prefix + counter++;
            mv = cv.visitMethod(a, n, desc, signature, exceptions);

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    }


    public void implementPublicConstructor(ClassWriter cw, String superClassName)
    {


        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, PlasticInternalUtils.toInternalName(superClassName), "<init>", "()V");
        mv.visitInsn(RETURN);
        mv.visitEnd();
    }

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    {
        ClassWriter cw = helper.createWriter(SYNTH_COMPONENT_CLASSNAME, BASIC_COMPONENT_CLASSNAME, Named.class.getName());


        helper.implementPublicConstructor(cw, BASIC_COMPONENT_CLASSNAME);


        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getName", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        mv.visitLdcInsn(name);
        mv.visitInsn(ARETURN);
        mv.visitEnd();


        cw.visitEnd();


        helper.writeFile(cw, SYNTH_COMPONENT_CLASSNAME);
    }

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    {
        String className = PACKAGE + ".Index";


        ClassWriter cw = helper.createWriter(className, "java.lang.Object");


        MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getNumber", "()I", null, null);
        mv.visitCode();
        mv.visitLdcInsn(number);
        mv.visitInsn(IRETURN);
        cw.visitEnd();


        cw.visitEnd();


        helper.writeFile(cw, className);

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