Example usage for org.aspectj.apache.bcel.classfile Method getReturnType

Introduction

In this page you can find the example usage for org.aspectj.apache.bcel.classfile Method getReturnType.

Prototype

public Type getReturnType() 

Source Link

Usage

From source file:org.caesarj.mixer.intern.ClassModifyingVisitor.java

License:Open Source License

public void visitMethod(Method method) {
    final ConstantPool cp = method.getConstantPool();
    // we search for outer-class-access functions, which
    // are static, have exactly one argument of this class' type and
    // return an instance of the outer class' type
    if (method.isStatic() && method.getName().startsWith("access$")) {
        String returnType = Type.getReturnType(method.getSignature()).toString();

        if (!Tools.sameClass(returnType, oldOuterClassName))
            return;
        Type[] argTypes = Type.getArgumentTypes(method.getSignature());
        if (argTypes.length != 1)
            return;

        // construct the new signature & use it to overwrite the old one
        String newSignature = "(L" + newClassName + ";)L" + newOuterClassName + ";";
        int index = method.getSignatureIndex();
        cp.setConstant(index, new ConstantUtf8(newSignature));
    }// w  w w.  j av a 2s .c  om
    // and we check for constructors 
    else if (method.getName().equals("<init>")) {
        Type[] argTypes = Type.getArgumentTypes(method.getSignature());
        for (int argIdx = 0; argIdx < argTypes.length; argIdx++) {
            // modify the signature if neccessary
            if (Tools.sameClass(argTypes[argIdx].toString(), oldOuterClassName)) {
                // construct the new signature and use it to overwrite the old one
                argTypes[argIdx] = Type.getType("L" + newOuterClassName + ";");
            }
        }
        // construct new signature
        String signature = Type.getMethodSignature(method.getReturnType(), argTypes);
        int signatureIndex = method.getSignatureIndex();
        cp.setConstant(signatureIndex, new ConstantUtf8(signature));
    }
}

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