com.github.unidbg.linux.android.dvm.DvmObject Maven / Gradle / Ivy

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package com.github.unidbg.linux.android.dvm;

import com.github.unidbg.Emulator;
import com.github.unidbg.Module;
import com.github.unidbg.linux.android.dvm.jni.ProxyDvmObject;
import com.github.unidbg.memory.MemoryBlock;
import com.github.unidbg.pointer.UnidbgPointer;
import com.sun.jna.Pointer;

import java.util.ArrayList;
import java.util.List;

public class DvmObject extends Hashable {

    private final DvmClass objectType;
    protected T value;
    private final BaseVM vm;

    protected DvmObject(DvmClass objectType, T value) {
        this(objectType == null ? null : objectType.vm, objectType, value);
    }

    private DvmObject(BaseVM vm, DvmClass objectType, T value) {
        this.vm = vm;
        this.objectType = objectType;
        this.value = value;
    }

    @SuppressWarnings("unchecked")
    final void setValue(Object obj) {
        this.value = (T) obj;
    }

    public T getValue() {
        return value;
    }

    public DvmClass getObjectType() {
        return objectType;
    }

    protected boolean isInstanceOf(DvmClass dvmClass) {
        return objectType != null && objectType.isInstance(dvmClass);
    }

    @SuppressWarnings("unused")
    public void callJniMethod(Emulator emulator, String method, Object...args) {
        if (objectType == null) {
            throw new IllegalStateException("objectType is null");
        }
        try {
            callJniMethod(emulator, vm, objectType, this, method, args);
        } finally {
            vm.deleteLocalRefs();
        }
    }

    @SuppressWarnings("unused")
    public boolean callJniMethodBoolean(Emulator emulator, String method, Object...args) {
        return BaseVM.valueOf(callJniMethodInt(emulator, method, args));
    }

    @SuppressWarnings("unused")
    public int callJniMethodInt(Emulator emulator, String method, Object...args) {
        if (objectType == null) {
            throw new IllegalStateException("objectType is null");
        }
        try {
            return callJniMethod(emulator, vm, objectType, this, method, args).intValue();
        } finally {
            vm.deleteLocalRefs();
        }
    }

    @SuppressWarnings("unused")
    public long callJniMethodLong(Emulator emulator, String method, Object...args) {
        if (objectType == null) {
            throw new IllegalStateException("objectType is null");
        }
        try {
            return callJniMethod(emulator, vm, objectType, this, method, args).longValue();
        } finally {
            vm.deleteLocalRefs();
        }
    }

    @SuppressWarnings("unused")
    public > V callJniMethodObject(Emulator emulator, String method, Object...args) {
        if (objectType == null) {
            throw new IllegalStateException("objectType is null");
        }
        try {
            Number number = callJniMethod(emulator, vm, objectType, this, method, args);
            return objectType.vm.getObject(number.intValue());
        } finally {
            vm.deleteLocalRefs();
        }
    }

    protected static Number callJniMethod(Emulator emulator, VM vm, DvmClass objectType, DvmObject thisObj, String method, Object...args) {
        UnidbgPointer fnPtr = objectType.findNativeFunction(emulator, method);
        vm.addLocalObject(thisObj);
        List