Example usage for org.objectweb.asm Opcodes INVOKESTATIC

List of usage examples for org.objectweb.asm Opcodes INVOKESTATIC

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Introduction

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

Prototype

int INVOKESTATIC

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

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Usage

From source file:org.codehaus.groovy.reflection.MethodHandleFactory.java

License:Apache License

private static void genInvokeWithFixedParams(ClassWriter cw, Method method) {
    MethodVisitor mv;/*from w ww .j  a v  a2s . co m*/
    final int pc = method.getParameterTypes().length;
    if (pc <= 4) {
        StringBuilder pdescb = new StringBuilder();
        for (int i = 0; i != pc; ++i)
            pdescb.append("Ljava/lang/Object;");

        String pdesc = pdescb.toString();

        mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "invoke", "(Ljava/lang/Object;" + pdesc + ")Ljava/lang/Object;",
                null, EXCEPTIONS);
        mv.visitCode();

        Class callClass = method.getDeclaringClass();
        boolean useInterface = callClass.isInterface();

        String type = BytecodeHelper.getClassInternalName(callClass.getName());
        String descriptor = BytecodeHelper.getMethodDescriptor(method.getReturnType(),
                method.getParameterTypes());

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

        mv.visitInsn(Opcodes.ARETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
}

From source file:org.codehaus.groovy.reflection.MethodHandleFactory.java

License:Apache License

private static void genInvokeWithFixedPrimitiveParams(ClassWriter cw, Method method) {
    MethodVisitor mv;//from  www .  j ava 2 s . c o m
    final Class<?>[] pt = method.getParameterTypes();
    final int pc = pt.length;
    if (pc > 0 && pc <= 3) {
        StringBuilder pdescb = new StringBuilder();
        boolean hasPrimitive = false;
        for (int i = 0; i != pc; ++i)
            if (pt[i].isPrimitive()) {
                hasPrimitive = true;
                pdescb.append(BytecodeHelper.getTypeDescription(pt[i]));
            } else
                pdescb.append("Ljava/lang/Object;");

        if (!hasPrimitive)
            return;

        String pdesc = pdescb.toString();

        mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "invoke", "(Ljava/lang/Object;" + pdesc + ")Ljava/lang/Object;",
                null, EXCEPTIONS);
        mv.visitCode();

        Class callClass = method.getDeclaringClass();
        boolean useInterface = callClass.isInterface();

        String type = BytecodeHelper.getClassInternalName(callClass.getName());
        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);
        }

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

        mv.visitInsn(Opcodes.ARETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }
}

From source file:org.codehaus.groovy.runtime.callsite.CallSiteGenerator.java

License:Apache License

private static MethodVisitor writeMethod(ClassWriter cw, String name, int argumentCount,
        final String superClass, CachedMethod cachedMethod, String receiverType, String parameterDescription,
        boolean useArray) {
    MethodVisitor mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "call" + name,
            "(L" + receiverType + ";" + parameterDescription + ")Ljava/lang/Object;", null, null);
    mv.visitCode();/*  w w w  . ja  v  a  2  s  .  com*/

    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", false);
    Label l0 = new Label();
    mv.visitJumpInsn(Opcodes.IFEQ, l0);

    // valid method branch

    Class callClass = cachedMethod.getDeclaringClass().getTheClass();
    boolean useInterface = callClass.isInterface();

    String type = BytecodeHelper.getClassInternalName(callClass.getName());
    String descriptor = BytecodeHelper.getMethodDescriptor(cachedMethod.getReturnType(),
            cachedMethod.getNativeParameterTypes());

    // prepare call
    int invokeMethodCode = Opcodes.INVOKEVIRTUAL;
    if (cachedMethod.isStatic()) {
        invokeMethodCode = Opcodes.INVOKESTATIC;
    } else {
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        BytecodeHelper.doCast(mv, callClass);
        if (useInterface)
            invokeMethodCode = Opcodes.INVOKEINTERFACE;
    }

    Class<?>[] parameters = cachedMethod.getPT();
    int size = parameters.length;
    for (int i = 0; i < size; i++) {
        if (useArray) {
            // unpack argument from Object[]
            mv.visitVarInsn(Opcodes.ALOAD, 2);
            BytecodeHelper.pushConstant(mv, i);
            mv.visitInsn(Opcodes.AALOAD);
        } else {
            mv.visitVarInsn(Opcodes.ALOAD, i + 2);
        }

        // cast argument to parameter class, inclusive unboxing
        // for methods with primitive types
        BytecodeHelper.doCast(mv, parameters[i]);
    }

    // make call
    mv.visitMethodInsn(invokeMethodCode, type, cachedMethod.getName(), descriptor, useInterface);

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

    // return
    mv.visitInsn(Opcodes.ARETURN);

    // 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;", false);
    }
    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;",
            false);
    mv.visitInsn(Opcodes.ARETURN);

    // 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;", false);
    mv.visitInsn(Opcodes.ATHROW);
    mv.visitTryCatchBlock(tryStart, tryEnd, catchStart, "groovy/lang/GroovyRuntimeException");

    mv.visitMaxs(0, 0);
    mv.visitEnd();
    return mv;
}

From source file:org.coldswap.asm.method.PublicFloatMethodReplacer.java

License:Open Source License

private InsnList replaceReturn(InsnList insnList, Type retType) {
    final Type rretType = retType;
    int retOpcode = MethodUtil.getRetOpcodeToReplace(retType);
    for (int i = 0; i < insnList.size(); i++) {
        AbstractInsnNode absIns = insnList.get(i);
        int opcode = absIns.getOpcode();
        if (opcode == retOpcode) {
            // if tries to return a Reference type into a primitive then
            // remove the unbox( we return an Object). If a primitive is returned
            // into a  primitive then we must try to box from primitive to Object/Integer, etc..

            // check if an unbox takes place before return
            final boolean[] isBoxUnbox = { false, false };
            AbstractInsnNode valueOf = null;
            AbstractInsnNode primitiveValue = null;
            if (i > 1) {
                valueOf = insnList.get(i - 1);
                primitiveValue = insnList.get(i - 2);
                if (valueOf.getOpcode() == Opcodes.INVOKESTATIC) {
                    valueOf.accept(new MethodVisitor(Opcodes.ASM5) {
                        @Override
                        public void visitMethodInsn(int i, String s, String s2, String s3) {
                            if (AutoBoxing.isPrimitive(rretType.getDescriptor())) {
                                if ((AutoBoxing.getBoxClassName(rretType) + ".valueOf").equals(s + s2)) {
                                    isBoxUnbox[0] = true;
                                }/*from w  ww  .  j  av  a  2s .co  m*/
                            }
                            super.visitMethodInsn(i, s, s2, s3);
                        }
                    });
                }

                if (isBoxUnbox[0] && primitiveValue.getOpcode() == Opcodes.INVOKEVIRTUAL) {
                    primitiveValue.accept(new MethodVisitor(Opcodes.ASM5) {
                        @Override
                        public void visitMethodInsn(int i, String s, String s2, String s3) {
                            if ((s + s2).equals(AutoBoxing.getUnBoxInvoke(rretType))) {
                                isBoxUnbox[1] = true;
                            }
                            super.visitMethodInsn(i, s, s2, s3);
                        }
                    });
                }
            }

            if (isBoxUnbox[0] && isBoxUnbox[1]) {
                // remove indexes
                insnList.remove(valueOf);
                insnList.remove(primitiveValue);
            } else {
                InsnList iList = new InsnList();
                iList.add(AutoBoxing.box(retType));
                iList.add(new InsnNode(Opcodes.ARETURN));
                insnList.insertBefore(absIns, iList);
                insnList.remove(absIns);

            }
        }
    }
    return insnList;
}

From source file:org.coldswap.asm.method.PublicObjectMethodReplacer.java

License:Open Source License

private InsnList replaceReturn(InsnList insnList, Type retType) {
    final Type rretType = retType;
    int retOpcode = MethodUtil.getRetOpcodeToReplace(retType);
    for (int i = 0; i < insnList.size(); i++) {
        AbstractInsnNode absIns = insnList.get(i);
        int opcode = absIns.getOpcode();
        if (opcode == retOpcode) {
            // if tries to return a Reference type into a primitive then
            // remove the unbox( we return an Object). If a primitive is returned
            // into a  primitive then we must try to box from primitive to Object/Integer, etc..

            // check if an unbox takes place before return
            final boolean[] isBoxUnbox = { false, false };
            AbstractInsnNode valueOf = null;
            AbstractInsnNode primitiveValue = null;
            if (i > 1) {
                valueOf = insnList.get(i - 1);
                primitiveValue = insnList.get(i - 2);
                if (valueOf.getOpcode() == Opcodes.INVOKESTATIC) {
                    valueOf.accept(new MethodVisitor(Opcodes.ASM5) {
                        @Override
                        public void visitMethodInsn(int i, String s, String s2, String s3) {
                            if (AutoBoxing.isPrimitive(rretType.getDescriptor())) {
                                if ((AutoBoxing.getBoxClassName(rretType) + ".valueOf").equals(s + s2)) {
                                    isBoxUnbox[0] = true;
                                }//  w  w  w. ja v  a2  s  .c o  m
                            }
                            super.visitMethodInsn(i, s, s2, s3);
                        }
                    });
                }

                if (isBoxUnbox[0] && primitiveValue.getOpcode() == Opcodes.INVOKEVIRTUAL) {
                    primitiveValue.accept(new MethodVisitor(Opcodes.ASM5) {
                        @Override
                        public void visitMethodInsn(int i, String s, String s2, String s3) {
                            if ((s + s2).equals(AutoBoxing.getUnBoxInvoke(rretType))) {
                                isBoxUnbox[1] = true;
                            }
                            super.visitMethodInsn(i, s, s2, s3);
                        }
                    });
                }
            }

            if (isBoxUnbox[0] && isBoxUnbox[1]) {
                // remove indexes
                insnList.remove(valueOf);
                insnList.remove(primitiveValue);
            } else {
                InsnList iList = new InsnList();
                iList.add(AutoBoxing.box(retType));
                iList.add(new InsnNode(Opcodes.ARETURN));
                insnList.insertBefore(absIns, iList);
                insnList.remove(absIns);
            }
        }
    }
    return insnList;
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList boxBoolean() {
    InsnList il = new InsnList();
    il.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;"));
    return il;//from  w ww . j  a v a 2 s .c  o  m
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList boxByte() {
    InsnList il = new InsnList();
    il.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;"));
    return il;//  ww  w  . j av a2  s  . co  m
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList boxChar() {
    InsnList il = new InsnList();
    il.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/Character", "valueOf",
            "(C)Ljava/lang/Character;"));
    return il;/*from ww w .  ja v  a2  s  . c  om*/
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList boxShort() {
    InsnList il = new InsnList();
    il.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;"));
    return il;/*ww  w  .  ja  v a  2s  .co  m*/
}

From source file:org.coldswap.util.AutoBoxing.java

License:Open Source License

private static InsnList boxInt() {
    InsnList il = new InsnList();
    il.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;"));
    return il;//from w ww  . j av a2 s .  com
}