com.packenius.datadivider.javaclass.instr.CHECKCAST Maven / Gradle / Ivy

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package com.packenius.datadivider.javaclass.instr;

import com.packenius.datadivider.javaclass.ConstantPool;
import com.packenius.datadivider.javaclass.ConstantPoolEntryCrossPointer;
import com.packenius.datadivider.javaclass.cp.CpClass;
import com.packenius.dumpapi.DumpReader;
import com.packenius.dumpapi.DumpReader.BigEndianUnsigned2ByteInteger;

/**
 * JVM-Instruktion.
 * @author Christian Packenius, 2016
 */
public class CHECKCAST extends JvmInstruction {
    /**
     * Index in den Konstantenpool.
     */
    private final int index;

    /**
     * Klassen-, Interface- oder Array-Typ.
     */
    public final CpClass type;

    /**
     * Konstruktor.
     */
    public CHECKCAST(int address, DumpReader reader, ConstantPool constantpool) {
        super(address, reader);

        BigEndianUnsigned2ByteInteger indexDumpBlock = reader.readBigEndianU2("Class index: ###DEC##");
        indexDumpBlock.setCrossPointer(new ConstantPoolEntryCrossPointer(indexDumpBlock.value));
        index = indexDumpBlock.value;

        type = constantpool.getClassEntry(index);

        setEndAddress(reader);
    }

    @Override
    public String toString() {
        return "checkcast " + type.toString() + "  // #" + index;
    }
}