org.apache.ibatis.javassist.convert.TransformCallToStatic Maven / Gradle / Ivy

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The MyBatis SQL mapper framework makes it easier to use a relational database with object-oriented applications. MyBatis couples objects with stored procedures or SQL statements using a XML descriptor or annotations. Simplicity is the biggest advantage of the MyBatis data mapper over object relational mapping tools.

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package org.apache.ibatis.javassist.convert;

import org.apache.ibatis.javassist.CtMethod;
import org.apache.ibatis.javassist.bytecode.CodeIterator;
import org.apache.ibatis.javassist.bytecode.ConstPool;
import org.apache.ibatis.javassist.bytecode.Descriptor;
import org.apache.ibatis.javassist.bytecode.Opcode;

public class TransformCallToStatic extends TransformCall {
    public TransformCallToStatic(Transformer next, CtMethod origMethod, CtMethod substMethod) {
        super(next, origMethod, substMethod);
        methodDescriptor = origMethod.getMethodInfo2().getDescriptor();
    }

    @Override
    protected int match(int c, int pos, CodeIterator iterator, int typedesc, ConstPool cp) {
        if (newIndex == 0) {
            String desc = Descriptor.insertParameter(classname, methodDescriptor);
            int nt = cp.addNameAndTypeInfo(newMethodname, desc);
            int ci = cp.addClassInfo(newClassname);
            newIndex = cp.addMethodrefInfo(ci, nt);
            constPool = cp;
        }
        iterator.writeByte(Opcode.INVOKESTATIC, pos);
        iterator.write16bit(newIndex, pos + 1);
        return pos;
    }
}