com.axway.jmb.builders.Methods.java Source code

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Here is the source code for com.axway.jmb.builders.Methods.java

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// Copyright (c) Axway Inc. All Rights Reserved.
// Please refer to the file "LICENSE" for further important copyright
// and licensing information.  Please also refer to the documentation
// for additional copyright notices.
package com.axway.jmb.builders;

import static org.objectweb.asm.Opcodes.ASM5;

import java.util.Map;

import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
import org.objectweb.asm.commons.Method;
import org.objectweb.asm.util.CheckMethodAdapter;

import com.axway.jmb.CompileException;
import com.axway.jmb.MethodBuilder;
import com.axway.jmb.Reflections;
import com.axway.jmb.Utils;
import com.axway.jmb.annotations.ProcedureParameter;
import com.axway.jmb.annotations.ProcedureParameters;

/**
 * Bytecode generator for java class methods.
 *
 * @author Florin Potera
 */

public class Methods {

    public static MethodBuilder buildProcedureWithoutParameters(ClassVisitor clazz,
            String messageBuilderStatementName, int accessType, Map<Label, Integer> labels) {
        debug("buildProcedureWithoutParameters(" + clazz + "," + messageBuilderStatementName + "," + accessType
                + ")");

        MethodVisitor mv = clazz.visitMethod(accessType, Utils.getJavaMethodName(messageBuilderStatementName),
                "()V", null, null);

        mv = new CheckMethodAdapter(accessType, Utils.getJavaMethodName(messageBuilderStatementName), "()V", mv,
                labels);

        return new MethodBuilder(ASM5, mv, accessType, Utils.getJavaMethodName(messageBuilderStatementName), "()V");
    }

    public static void callLocalProcedure(MethodBuilder mainMethod, Type currentClass, Method getInstanceMethod,
            Method procedureMethod) {
        debug("callLocalProcedure()");
        mainMethod.invokeStatic(currentClass, getInstanceMethod);
        mainMethod.invokeVirtual(currentClass, procedureMethod);
    }

    public static void beginProcedureCall(MethodBuilder method, Type clazz, Method getInstanceMethod,
            int arraySize) {
        method.invokeStatic(clazz, getInstanceMethod);
        method.visitInsn(Opcodes.ICONST_0 + arraySize);
        method.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");
    }

    public static void doProcedureCall(MethodBuilder method, Type clazz, Method procedureMethod) {
        method.invokeVirtual(clazz, procedureMethod);
    }

    public static void endProcedureCall(MethodBuilder method) {
        method.visitInsn(Opcodes.POP);
    }

    private static void debug(String str) {
        System.out.println(str);
        ;
    }
}