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/*******************************************************************************
 * Copyright (c) 2015 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public
 * License v3.0 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 * <p>
 * Contributors:
 * Jeff Martin - initial API and implementation
 ******************************************************************************/

package cuchaz.enigma.mapping.entry;

import com.strobel.assembler.metadata.*;
import cuchaz.enigma.bytecode.AccessFlags;
import cuchaz.enigma.mapping.MethodDescriptor;
import cuchaz.enigma.mapping.Signature;
import cuchaz.enigma.mapping.TypeDescriptor;

import java.util.List;

public class ProcyonEntryFactory {
	private final ReferencedEntryPool entryPool;

	public ProcyonEntryFactory(ReferencedEntryPool entryPool) {
		this.entryPool = entryPool;
	}

	private String getErasedSignature(MemberReference def) {
		if (!(def instanceof MethodReference))
			return def.getErasedSignature();
		MethodReference methodReference = (MethodReference) def;
		StringBuilder builder = new StringBuilder("(");
		for (ParameterDefinition param : methodReference.getParameters()) {
			TypeReference paramType = param.getParameterType();
			if (paramType.getErasedSignature().equals("Ljava/lang/Object;") && paramType.hasExtendsBound() && paramType.getExtendsBound() instanceof CompoundTypeReference) {
				List<TypeReference> interfaces = ((CompoundTypeReference) paramType.getExtendsBound()).getInterfaces();
				interfaces.forEach((inter) -> builder.append(inter.getErasedSignature()));
			} else
				builder.append(paramType.getErasedSignature());
		}
		builder.append(")");

		TypeReference returnType = methodReference.getReturnType();
		if (returnType.getErasedSignature().equals("Ljava/lang/Object;") && returnType.hasExtendsBound() && returnType.getExtendsBound() instanceof CompoundTypeReference) {
			List<TypeReference> interfaces = ((CompoundTypeReference) returnType.getExtendsBound()).getInterfaces();
			interfaces.forEach((inter) -> builder.append(inter.getErasedSignature()));
		} else
			builder.append(returnType.getErasedSignature());
		return builder.toString();
	}

	public FieldEntry getFieldEntry(MemberReference def) {
		ClassEntry classEntry = entryPool.getClass(def.getDeclaringType().getInternalName());
		return entryPool.getField(classEntry, def.getName(), def.getErasedSignature());
	}

	public FieldDefEntry getFieldDefEntry(FieldDefinition def) {
		ClassEntry classEntry = entryPool.getClass(def.getDeclaringType().getInternalName());
		return new FieldDefEntry(classEntry, def.getName(), new TypeDescriptor(def.getErasedSignature()), Signature.createTypedSignature(def.getSignature()), new AccessFlags(def.getModifiers()));
	}

	public MethodEntry getMethodEntry(MemberReference def) {
		ClassEntry classEntry = entryPool.getClass(def.getDeclaringType().getInternalName());
		return entryPool.getMethod(classEntry, def.getName(), getErasedSignature(def));
	}

	public MethodDefEntry getMethodDefEntry(MethodDefinition def) {
		ClassEntry classEntry = entryPool.getClass(def.getDeclaringType().getInternalName());
		return new MethodDefEntry(classEntry, def.getName(), new MethodDescriptor(def.getErasedSignature()), Signature.createSignature(def.getSignature()), new AccessFlags(def.getModifiers()));
	}
}