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package org.jf.dexlib2.rewriter;

import org.jf.dexlib2.iface.*;
import org.jf.dexlib2.iface.debug.DebugItem;
import org.jf.dexlib2.iface.instruction.Instruction;
import org.jf.dexlib2.iface.reference.FieldReference;
import org.jf.dexlib2.iface.reference.MethodReference;
import org.jf.dexlib2.iface.value.EncodedValue;

import javax.annotation.Nonnull;

Out-of-the box, this class does nothing except make a picture-perfect copy of a dex file.
However, it provides many points where you can hook into this process and selectively modify
the dex file. For example, If you want to rename all instances (including definitions and references)
of the class Lorg/blah/MyBlah; to Lorg/blah/YourBlah;

DexRewriter rewriter = new DexRewriter(new RewriterModule() {
    public Rewriter<String> getTypeRewriter(Rewriters rewriters) {
        return new Rewriter<String>() {
            public String rewrite(String value) {
                if (value.equals("Lorg/blah/MyBlah;")) {
                    return "Lorg/blah/YourBlah;";
                }
                return value;
            }
        };
    }
 });
DexFile rewrittenDexFile = rewriter.rewriteDexFile(dexFile);
 
/**
 * Out-of-the box, this class does nothing except make a picture-perfect copy of a dex file.
 *
 * However, it provides many points where you can hook into this process and selectively modify
 * the dex file. For example, If you want to rename all instances (including definitions and references)
 * of the class Lorg/blah/MyBlah; to Lorg/blah/YourBlah;
 *
 * <pre>
 * {@code
 * DexRewriter rewriter = new DexRewriter(new RewriterModule() {
 *     public Rewriter<String> getTypeRewriter(Rewriters rewriters) {
 *         return new Rewriter<String>() {
 *             public String rewrite(String value) {
 *                 if (value.equals("Lorg/blah/MyBlah;")) {
 *                     return "Lorg/blah/YourBlah;";
 *                 }
 *                 return value;
 *             }
 *         };
 *     }
 * });
 * DexFile rewrittenDexFile = rewriter.rewriteDexFile(dexFile);
 * }
 * </pre>
 */
public class DexRewriter implements Rewriters {
    private final Rewriter<DexFile> dexFileRewriter;
    private final Rewriter<ClassDef> classDefRewriter;
    private final Rewriter<Field> fieldRewriter;
    private final Rewriter<Method> methodRewriter;
    private final Rewriter<MethodParameter> methodParameterRewriter;
    private final Rewriter<MethodImplementation> methodImplementationRewriter;
    private final Rewriter<Instruction> instructionRewriter;
    private final Rewriter<TryBlock<? extends ExceptionHandler>> tryBlockRewriter;
    private final Rewriter<ExceptionHandler> exceptionHandlerRewriter;
    private final Rewriter<DebugItem> debugItemRewriter;
    private final Rewriter<String> typeRewriter;
    private final Rewriter<FieldReference> fieldReferenceRewriter;
    private final Rewriter<MethodReference> methodReferenceRewriter;
    private final Rewriter<Annotation> annotationRewriter;
    private final Rewriter<AnnotationElement> annotationElementRewriter;
    private final Rewriter<EncodedValue> encodedValueRewriter;

    public DexRewriter(RewriterModule module) {
        this.dexFileRewriter = module.getDexFileRewriter(this);
        this.classDefRewriter = module.getClassDefRewriter(this);
        this.fieldRewriter = module.getFieldRewriter(this);
        this.methodRewriter = module.getMethodRewriter(this);
        this.methodParameterRewriter = module.getMethodParameterRewriter(this);
        this.methodImplementationRewriter = module.getMethodImplementationRewriter(this);
        this.instructionRewriter = module.getInstructionRewriter(this);
        this.tryBlockRewriter = module.getTryBlockRewriter(this);
        this.exceptionHandlerRewriter = module.getExceptionHandlerRewriter(this);
        this.debugItemRewriter = module.getDebugItemRewriter(this);
        this.typeRewriter = module.getTypeRewriter(this);
        this.fieldReferenceRewriter = module.getFieldReferenceRewriter(this);
        this.methodReferenceRewriter = module.getMethodReferenceRewriter(this);
        this.annotationRewriter = module.getAnnotationRewriter(this);
        this.annotationElementRewriter = module.getAnnotationElementRewriter(this);
        this.encodedValueRewriter = module.getEncodedValueRewriter(this);
    }

    @Nonnull @Override public Rewriter<DexFile> getDexFileRewriter() { return dexFileRewriter; }
    @Nonnull @Override public Rewriter<ClassDef> getClassDefRewriter() { return classDefRewriter; }
    @Nonnull @Override public Rewriter<Field> getFieldRewriter() { return fieldRewriter; }
    @Nonnull @Override public Rewriter<Method> getMethodRewriter() { return methodRewriter; }
    @Nonnull @Override public Rewriter<MethodParameter> getMethodParameterRewriter() { return methodParameterRewriter; }
    @Nonnull @Override public Rewriter<MethodImplementation> getMethodImplementationRewriter() { return methodImplementationRewriter; }
    @Nonnull @Override public Rewriter<Instruction> getInstructionRewriter() { return instructionRewriter; }
    @Nonnull @Override public Rewriter<TryBlock<? extends ExceptionHandler>> getTryBlockRewriter() { return tryBlockRewriter; }
    @Nonnull @Override public Rewriter<ExceptionHandler> getExceptionHandlerRewriter() { return exceptionHandlerRewriter; }
    @Nonnull @Override public Rewriter<DebugItem> getDebugItemRewriter() { return debugItemRewriter; }
    @Nonnull @Override public Rewriter<String> getTypeRewriter() { return typeRewriter; }
    @Nonnull @Override public Rewriter<FieldReference> getFieldReferenceRewriter() { return fieldReferenceRewriter; }
    @Nonnull @Override public Rewriter<MethodReference> getMethodReferenceRewriter() { return methodReferenceRewriter; }
    @Nonnull @Override public Rewriter<Annotation> getAnnotationRewriter() { return annotationRewriter; }
    @Nonnull @Override public Rewriter<AnnotationElement> getAnnotationElementRewriter() { return annotationElementRewriter; }
    @Nonnull @Override public Rewriter<EncodedValue> getEncodedValueRewriter() { return encodedValueRewriter; }
}