Examples of org.objectweb.asm.MethodVisitor.visitMethodInsn()

org.objectweb.asm.MethodVisitor.visitMethodInsn()
Visits a method instruction. A method instruction is an instruction that invokes a method. @param opcode the opcode of the type instruction to be visited. Thisopcode is either INVOKEVIRTUAL, INVOKESPECIAL, INVOKESTATIC or INVOKEINTERFACE. @param owner the internal name of the method's owner class (see {@link Type#getInternalName() getInternalName}). @param name the method's name. @param desc the method's descriptor (see {@link Type Type}).

            String descriptor = BytecodeHelper.getMethodDescriptor(method.getReturnType(), method.getParameterTypes());


            // make call
             if (Modifier.isStatic(method.getModifiers())) {
                MethodHandleFactory.genLoadParametersPrimitiveDirect(2, mv, method);
                mv.visitMethodInsn(Opcodes.INVOKESTATIC, type, method.getName(), descriptor);
            } else {
                mv.visitVarInsn(Opcodes.ALOAD, 1);
                BytecodeHelper.doCast(mv, callClass);
                MethodHandleFactory.genLoadParametersPrimitiveDirect(2, mv, method);
                mv.visitMethodInsn((useInterface) ? Opcodes.INVOKEINTERFACE : Opcodes.INVOKEVIRTUAL, type, method.getName(), descriptor);

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                mv.visitMethodInsn(Opcodes.INVOKESTATIC, type, method.getName(), descriptor);
            } else {
                mv.visitVarInsn(Opcodes.ALOAD, 1);
                BytecodeHelper.doCast(mv, callClass);
                MethodHandleFactory.genLoadParametersPrimitiveDirect(2, mv, method);
                mv.visitMethodInsn((useInterface) ? Opcodes.INVOKEINTERFACE : Opcodes.INVOKEVIRTUAL, type, method.getName(), descriptor);
            }


            BytecodeHelper.box(mv, method.getReturnType());
            if (method.getReturnType() == void.class) {
                mv.visitInsn(Opcodes.ACONST_NULL);

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            controller.getOperandStack().doGroovyCast(para[i].getType());
        }


        String owner = BytecodeHelper.getClassInternalName(target.getDeclaringClass());
        String desc = BytecodeHelper.getMethodDescriptor(target.getReturnType(), target.getParameters());
        mv.visitMethodInsn(opcode, owner, methodName, desc);
        ClassNode ret = target.getReturnType().redirect();
        if (ret==ClassHelper.VOID_TYPE) {
            ret = ClassHelper.OBJECT_TYPE;
            mv.visitInsn(ACONST_NULL);
        }

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        final Label tryStart = new Label();
        mv.visitLabel(tryStart);
        
        // call for checking if method is still valid
        for (int i = 0; i < argumentCount; ++i) mv.visitVarInsn(Opcodes.ALOAD, i);
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, superClass, "checkCall", "(Ljava/lang/Object;" + parameterDescription + ")Z");
        Label l0 = new Label();
        mv.visitJumpInsn(Opcodes.IFEQ, l0);
        
        // valid method branch

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            // for methods with primitive types
            BytecodeHelper.doCast(mv, parameters[i]);
        }        
        
        // make call
        mv.visitMethodInsn(invokeMethodCode, type, cachedMethod.getName(), descriptor);


        // produce result
        BytecodeHelper.box(mv, cachedMethod.getReturnType());
        if (cachedMethod.getReturnType() == void.class) {
            mv.visitInsn(Opcodes.ACONST_NULL);

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        // fall back after method change
        mv.visitLabel(l0);
        for (int i = 0; i < argumentCount; ++i) mv.visitVarInsn(Opcodes.ALOAD, i);
        if (!useArray) {
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/ArrayUtil", "createArray", "(" + parameterDescription + ")[Ljava/lang/Object;");
        }
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/callsite/CallSiteArray", "defaultCall" + name, "(Lorg/codehaus/groovy/runtime/callsite/CallSite;L" + receiverType + ";[Ljava/lang/Object;)Ljava/lang/Object;");
        mv.visitInsn(Opcodes.ARETURN);
        
        // exception unwrapping for stackless exceptions

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        mv.visitLabel(l0);
        for (int i = 0; i < argumentCount; ++i) mv.visitVarInsn(Opcodes.ALOAD, i);
        if (!useArray) {
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/ArrayUtil", "createArray", "(" + parameterDescription + ")[Ljava/lang/Object;");
        }
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/callsite/CallSiteArray", "defaultCall" + name, "(Lorg/codehaus/groovy/runtime/callsite/CallSite;L" + receiverType + ";[Ljava/lang/Object;)Ljava/lang/Object;");
        mv.visitInsn(Opcodes.ARETURN);
        
        // exception unwrapping for stackless exceptions
        final Label tryEnd = new Label();
        mv.visitLabel(tryEnd);

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        // exception unwrapping for stackless exceptions
        final Label tryEnd = new Label();
        mv.visitLabel(tryEnd);
        final Label catchStart = new Label();
        mv.visitLabel(catchStart);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/ScriptBytecodeAdapter", "unwrap", "(Lgroovy/lang/GroovyRuntimeException;)Ljava/lang/Throwable;");
        mv.visitInsn(Opcodes.ATHROW);        
        mv.visitTryCatchBlock(tryStart, tryEnd, catchStart, GRE);
        
        mv.visitMaxs(0, 0);
        mv.visitEnd();

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        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitVarInsn(Opcodes.ALOAD, 2);
        mv.visitVarInsn(Opcodes.ALOAD, 3);
        mv.visitVarInsn(Opcodes.ALOAD, 4);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, superClass, "<init>", "(Lorg/codehaus/groovy/runtime/callsite/CallSite;Lgroovy/lang/MetaClassImpl;Lgroovy/lang/MetaMethod;[Ljava/lang/Class;)V");


        mv.visitVarInsn(Opcodes.ALOAD, 5);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, internalName, "__constructor__", "Ljava/lang/reflect/Constructor;");


        mv.visitInsn(Opcodes.RETURN);

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    }
    mv = cv.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    if (mv != null) {
      mv.visitCode();
      mv.visitVarInsn(ALOAD, 0);
      mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>",
          "()V");
      mv.visitInsn(RETURN);
      mv.visitMaxs(1, 1);
      mv.visitEnd();
    }

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