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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;

import com.strobel.assembler.metadata.*;

import java.util.List;

public class ProcyonEntryFactory {

	private static 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 static FieldEntry getFieldEntry(MemberReference def) {
		return new FieldEntry(new ClassEntry(def.getDeclaringType().getInternalName()), def.getName(), new Type(def.getErasedSignature()));
	}

	public static MethodEntry getMethodEntry(MemberReference def) {
		return new MethodEntry(new ClassEntry(def.getDeclaringType().getInternalName()), def.getName(), new Signature(getErasedSignature(def)));
	}

	public static ConstructorEntry getConstructorEntry(MethodReference def) {
		if (def.isTypeInitializer()) {
			return new ConstructorEntry(new ClassEntry(def.getDeclaringType().getInternalName()));
		} else {
			return new ConstructorEntry(new ClassEntry(def.getDeclaringType().getInternalName()), new Signature(def.getErasedSignature()));
		}
	}

	public static BehaviorEntry getBehaviorEntry(MethodReference def) {
		if (def.isConstructor() || def.isTypeInitializer()) {
			return getConstructorEntry(def);
		} else {
			return getMethodEntry(def);
		}
	}
}