MethodRefInfo.java

package main.coding_170430.jvm.constant;

/**
 * Created by peter on 2017/4/21.
 */
public class MethodRefInfo extends ConstantInfo {
    private int type = ConstantInfo.METHOD_INFO;

    private int classInfoIndex ;
    private int nameAndTypeIndex;

    public MethodRefInfo(ConstantPool pool){
        super(pool);
    }

    public int getClassInfoIndex() {
        return classInfoIndex;
    }

    public void setClassInfoIndex(int classInfoIndex) {
        this.classInfoIndex = classInfoIndex;
    }

    public int getNameAndTypeIndex() {
        return nameAndTypeIndex;
    }

    public void setNameAndTypeIndex(int nameAndTypeIndex) {
        this.nameAndTypeIndex = nameAndTypeIndex;
    }

    @Override
    public String toString() {
        return getClassName()+":"+this.getMethodName()+":"+this.getParamAndReturnType();
    }

    public String getClassName(){
        ConstantPool pool = this.getConstantPool();
        ClassInfo clzInfo =(ClassInfo) pool.getConstantInfo(this.getClassInfoIndex());
        return clzInfo.getClassName();
    }

    public String getMethodName(){
        ConstantPool pool = this.getConstantPool();
        NameAndTypeInfo typeInfo = (NameAndTypeInfo) pool.getConstantInfo(this.getNameAndTypeIndex());
        return typeInfo.getName();
    }

    public String getParamAndReturnType(){
        ConstantPool pool = this.getConstantPool();
        NameAndTypeInfo typeInfo = (NameAndTypeInfo)pool.getConstantInfo(this.getNameAndTypeIndex());
        return  typeInfo.getTypeInfo();
    }

    @Override
    public int getType() {
        return type;
    }
}