/*
 * 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,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * 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.builder;

import com.google.common.base.Functions;
import com.google.common.collect.*;
import org.jf.dexlib2.base.reference.BaseTypeReference;
import org.jf.dexlib2.iface.ClassDef;
import org.jf.dexlib2.util.FieldUtil;
import org.jf.dexlib2.util.MethodUtil;
import org.jf.dexlib2.writer.DexWriter;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.*;

public class BuilderClassDef extends BaseTypeReference implements ClassDef {
    @Nonnull final BuilderTypeReference type;
    final int accessFlags;
    @Nullable final BuilderTypeReference superclass;
    @Nonnull final BuilderTypeList interfaces;
    @Nullable final BuilderStringReference sourceFile;
    @Nonnull final BuilderAnnotationSet annotations;
    @Nonnull final SortedSet<BuilderField> staticFields;
    @Nonnull final SortedSet<BuilderField> instanceFields;
    @Nonnull final SortedSet<BuilderMethod> directMethods;
    @Nonnull final SortedSet<BuilderMethod> virtualMethods;

    int classDefIndex = DexWriter.NO_INDEX;
    int encodedArrayOffset = DexWriter.NO_OFFSET;
    int annotationDirectoryOffset = DexWriter.NO_OFFSET;

    BuilderClassDef(@Nonnull BuilderTypeReference type,
                    int accessFlags,
                    @Nullable BuilderTypeReference superclass,
                    @Nonnull BuilderTypeList interfaces,
                    @Nullable BuilderStringReference sourceFile,
                    @Nonnull BuilderAnnotationSet annotations,
                    @Nullable Iterable<? extends BuilderField> fields,
                    @Nullable Iterable<? extends BuilderMethod> methods) {
        this.type = type;
        this.accessFlags = accessFlags;
        this.superclass = superclass;
        this.interfaces = interfaces;
        this.sourceFile = sourceFile;
        this.annotations = annotations;
        if (fields == null) {
            this.staticFields = ImmutableSortedSet.of();
            this.instanceFields = ImmutableSortedSet.of();
        } else {
            this.staticFields = ImmutableSortedSet.copyOf(Iterables.filter(fields, FieldUtil.FIELD_IS_STATIC));
            this.instanceFields = ImmutableSortedSet.copyOf(Iterables.filter(fields, FieldUtil.FIELD_IS_INSTANCE));
        }
        if (methods == null) {
            this.directMethods = ImmutableSortedSet.of();
            this.virtualMethods = ImmutableSortedSet.of();
        } else {
            this.directMethods = ImmutableSortedSet.copyOf(Iterables.filter(methods, MethodUtil.METHOD_IS_DIRECT));
            this.virtualMethods = ImmutableSortedSet.copyOf(Iterables.filter(methods, MethodUtil.METHOD_IS_VIRTUAL));
        }
    }

    @Nonnull @Override public String getType() { return type.getType(); }
    @Override public int getAccessFlags() { return accessFlags; }
    @Nullable @Override public String getSuperclass() { return superclass==null?null:superclass.getType(); }
    @Nullable @Override public String getSourceFile() { return sourceFile==null?null:sourceFile.getString(); }
    @Nonnull @Override public BuilderAnnotationSet getAnnotations() { return annotations; }
    @Nonnull @Override public SortedSet<BuilderField> getStaticFields() { return staticFields; }
    @Nonnull @Override public SortedSet<BuilderField> getInstanceFields() { return instanceFields; }
    @Nonnull @Override public SortedSet<BuilderMethod> getDirectMethods() { return directMethods; }
    @Nonnull @Override public SortedSet<BuilderMethod> getVirtualMethods() { return virtualMethods; }

    @Nonnull @Override
    public Set<String> getInterfaces() {
        return new AbstractSet<String>() {
            @Nonnull @Override public Iterator<String> iterator() {
                return Iterators.transform(interfaces.iterator(), Functions.toStringFunction());
            }

            @Override public int size() {
                return interfaces.size();
            }
        };
    }

    @Nonnull @Override public Collection<BuilderField> getFields() {
        return new AbstractCollection<BuilderField>() {
            @Nonnull @Override public Iterator<BuilderField> iterator() {
                return Iterators.mergeSorted(
                        ImmutableList.of(staticFields.iterator(), instanceFields.iterator()),
                        Ordering.natural());
            }

            @Override public int size() {
                return staticFields.size() + instanceFields.size();
            }
        };
    }

    @Nonnull @Override public Collection<BuilderMethod> getMethods() {
        return new AbstractCollection<BuilderMethod>() {
            @Nonnull @Override public Iterator<BuilderMethod> iterator() {
                return Iterators.mergeSorted(
                        ImmutableList.of(directMethods.iterator(), virtualMethods.iterator()),
                        Ordering.natural());
            }

            @Override public int size() {
                return directMethods.size() + virtualMethods.size();
            }
        };
    }
}
