/*
 * Copyright 2013, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.jf.dexlib2.writer.pool;

import org.jf.dexlib2.ValueType;
import org.jf.dexlib2.iface.Annotation;
import org.jf.dexlib2.iface.AnnotationElement;
import org.jf.dexlib2.iface.ClassDef;
import org.jf.dexlib2.iface.Field;
import org.jf.dexlib2.iface.reference.*;
import org.jf.dexlib2.iface.value.*;
import org.jf.dexlib2.immutable.instruction.ImmutableInstructionFactory;
import org.jf.dexlib2.writer.DexWriter;
import org.jf.dexlib2.writer.io.FileDataStore;
import org.jf.dexlib2.writer.pool.ProtoPool.Key;
import org.jf.util.ExceptionWithContext;

import javax.annotation.Nonnull;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Set;

public class DexPool extends DexWriter<CharSequence, StringReference, CharSequence, TypeReference, Key,
        FieldReference, MethodReference, Reference, PoolClassDef,
        Annotation, Set<? extends Annotation>,
        TypeListPool.Key<? extends Collection<? extends CharSequence>>, Field, PoolMethod,
        EncodedValue, AnnotationElement> {

    public static DexPool makeDexPool() {
        return makeDexPool(15);
    }

    public static DexPool makeDexPool(int api) {
        StringPool stringPool = new StringPool();
        TypePool typePool = new TypePool(stringPool);
        FieldPool fieldPool = new FieldPool(stringPool, typePool);
        TypeListPool typeListPool = new TypeListPool(typePool);
        ProtoPool protoPool = new ProtoPool(stringPool, typePool, typeListPool);
        MethodPool methodPool = new MethodPool(stringPool, typePool, protoPool);
        AnnotationPool annotationPool = new AnnotationPool(stringPool, typePool, fieldPool, methodPool);
        AnnotationSetPool annotationSetPool = new AnnotationSetPool(annotationPool);
        ClassPool classPool = new ClassPool(stringPool, typePool, fieldPool, methodPool, annotationSetPool,
                typeListPool);

        return new DexPool(api, stringPool, typePool, protoPool, fieldPool, methodPool, classPool, typeListPool,
                annotationPool, annotationSetPool);
    }

    private DexPool(int api, StringPool stringPool, TypePool typePool, ProtoPool protoPool, FieldPool fieldPool,
                    MethodPool methodPool, ClassPool classPool, TypeListPool typeListPool,
                    AnnotationPool annotationPool, AnnotationSetPool annotationSetPool) {
        super(api, ImmutableInstructionFactory.INSTANCE, stringPool, typePool, protoPool, fieldPool, methodPool,
                classPool, typeListPool, annotationPool, annotationSetPool);
    }

    public static void writeTo(@Nonnull String path, @Nonnull org.jf.dexlib2.iface.DexFile input) throws IOException {
        DexPool dexPool = makeDexPool();
        for (ClassDef classDef: input.getClasses()) {
            ((ClassPool)dexPool.classSection).intern(classDef);
        }
        dexPool.writeTo(new FileDataStore(new File(path)));
    }

    @Override protected void writeEncodedValue(@Nonnull InternalEncodedValueWriter writer,
                                               @Nonnull EncodedValue encodedValue) throws IOException {
        switch (encodedValue.getValueType()) {
            case ValueType.ANNOTATION:
                AnnotationEncodedValue annotationEncodedValue = (AnnotationEncodedValue)encodedValue;
                writer.writeAnnotation(annotationEncodedValue.getType(), annotationEncodedValue.getElements());
                break;
            case ValueType.ARRAY:
                ArrayEncodedValue arrayEncodedValue = (ArrayEncodedValue)encodedValue;
                writer.writeArray(arrayEncodedValue.getValue());
                break;
            case ValueType.BOOLEAN:
                writer.writeBoolean(((BooleanEncodedValue)encodedValue).getValue());
                break;
            case ValueType.BYTE:
                writer.writeByte(((ByteEncodedValue)encodedValue).getValue());
                break;
            case ValueType.CHAR:
                writer.writeChar(((CharEncodedValue)encodedValue).getValue());
                break;
            case ValueType.DOUBLE:
                writer.writeDouble(((DoubleEncodedValue)encodedValue).getValue());
                break;
            case ValueType.ENUM:
                writer.writeEnum(((EnumEncodedValue)encodedValue).getValue());
                break;
            case ValueType.FIELD:
                writer.writeField(((FieldEncodedValue)encodedValue).getValue());
                break;
            case ValueType.FLOAT:
                writer.writeFloat(((FloatEncodedValue)encodedValue).getValue());
                break;
            case ValueType.INT:
                writer.writeInt(((IntEncodedValue)encodedValue).getValue());
                break;
            case ValueType.LONG:
                writer.writeLong(((LongEncodedValue)encodedValue).getValue());
                break;
            case ValueType.METHOD:
                writer.writeMethod(((MethodEncodedValue)encodedValue).getValue());
                break;
            case ValueType.NULL:
                writer.writeNull();
                break;
            case ValueType.SHORT:
                writer.writeShort(((ShortEncodedValue)encodedValue).getValue());
                break;
            case ValueType.STRING:
                writer.writeString(((StringEncodedValue)encodedValue).getValue());
                break;
            case ValueType.TYPE:
                writer.writeType(((TypeEncodedValue)encodedValue).getValue());
                break;
            default:
                throw new ExceptionWithContext("Unrecognized value type: %d", encodedValue.getValueType());
        }
    }

    public static void internEncodedValue(@Nonnull EncodedValue encodedValue,
                                          @Nonnull StringPool stringPool,
                                          @Nonnull TypePool typePool,
                                          @Nonnull FieldPool fieldPool,
                                          @Nonnull MethodPool methodPool) {
        switch (encodedValue.getValueType()) {
            case ValueType.ANNOTATION:
                AnnotationEncodedValue annotationEncodedValue = (AnnotationEncodedValue)encodedValue;
                typePool.intern(annotationEncodedValue.getType());
                for (AnnotationElement element: annotationEncodedValue.getElements()) {
                    stringPool.intern(element.getName());
                    internEncodedValue(element.getValue(), stringPool, typePool, fieldPool, methodPool);
                }
                break;
            case ValueType.ARRAY:
                for (EncodedValue element: ((ArrayEncodedValue)encodedValue).getValue()) {
                    internEncodedValue(element, stringPool, typePool, fieldPool, methodPool);
                }
                break;
            case ValueType.STRING:
                stringPool.intern(((StringEncodedValue)encodedValue).getValue());
                break;
            case ValueType.TYPE:
                typePool.intern(((TypeEncodedValue)encodedValue).getValue());
                break;
            case ValueType.ENUM:
                fieldPool.intern(((EnumEncodedValue)encodedValue).getValue());
                break;
            case ValueType.FIELD:
                fieldPool.intern(((FieldEncodedValue)encodedValue).getValue());
                break;
            case ValueType.METHOD:
                methodPool.intern(((MethodEncodedValue)encodedValue).getValue());
                break;
        }
    }
}
