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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/* *******************************************************************
 * Copyright (c) 2002 Palo Alto Research Center, Incorporated (PARC).
 * All rights reserved.
 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Public License v 2.0
 * which accompanies this distribution and is available at
 * https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
 *
 * Contributors:
 *     PARC     initial implementation
 * ******************************************************************/

package org.aspectj.weaver;

import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.aspectj.bridge.ISourceLocation;

public class NewMethodTypeMunger extends ResolvedTypeMunger {

	public NewMethodTypeMunger(ResolvedMember signature, Set superMethodsCalled, List typeVariableAliases) {
		super(Method, signature);
		this.typeVariableAliases = typeVariableAliases;
		this.setSuperMethodsCalled(superMethodsCalled);
	}

	public ResolvedMember getInterMethodBody(UnresolvedType aspectType) {
		return AjcMemberMaker.interMethodBody(signature, aspectType);
	}

	/**
	 * If the munger has a declared signature
	 */
	public ResolvedMember getDeclaredInterMethodBody(UnresolvedType aspectType, World w) {
		if (declaredSignature != null) {
			ResolvedMember rm = declaredSignature.parameterizedWith(null, signature.getDeclaringType().resolve(w), false,
					getTypeVariableAliases());
			return AjcMemberMaker.interMethodBody(rm, aspectType);
		} else {
			return AjcMemberMaker.interMethodBody(signature, aspectType);
		}
	}

	// public ResolvedMember getInterMethodDispatcher(UnresolvedType aspectType) {
	// return AjcMemberMaker.interMethodDispatcher(signature, aspectType);
	// }

	public ResolvedMember getDeclaredInterMethodDispatcher(UnresolvedType aspectType, World w) {
		if (declaredSignature != null) {
			ResolvedMember rm = declaredSignature.parameterizedWith(null, signature.getDeclaringType().resolve(w), false,
					getTypeVariableAliases());
			return AjcMemberMaker.interMethodDispatcher(rm, aspectType);
		} else {
			return AjcMemberMaker.interMethodDispatcher(signature, aspectType);
		}
	}

	public void write(CompressingDataOutputStream s) throws IOException {
		kind.write(s);
		signature.write(s);
		writeSuperMethodsCalled(s);
		writeSourceLocation(s);
		writeOutTypeAliases(s);
	}

	public static ResolvedTypeMunger readMethod(VersionedDataInputStream s, ISourceContext context) throws IOException {
		ISourceLocation sloc = null;
		ResolvedMemberImpl rmImpl = ResolvedMemberImpl.readResolvedMember(s, context);
		Set superMethodsCalled = readSuperMethodsCalled(s);
		sloc = readSourceLocation(s);
		List typeVarAliases = readInTypeAliases(s);

		ResolvedTypeMunger munger = new NewMethodTypeMunger(rmImpl, superMethodsCalled, typeVarAliases);
		if (sloc != null) {
			munger.setSourceLocation(sloc);
		}
		return munger;
	}

	public ResolvedMember getMatchingSyntheticMember(Member member, ResolvedType aspectType) {
		ResolvedMember ret = AjcMemberMaker.interMethodDispatcher(getSignature(), aspectType);
		if (ResolvedType.matches(ret, member)) {
			return getSignature();
		}
		return super.getMatchingSyntheticMember(member, aspectType);
	}

	/**
	 * see ResolvedTypeMunger.parameterizedFor(ResolvedType)
	 */
	public ResolvedTypeMunger parameterizedFor(ResolvedType target) {
		ResolvedType genericType = target;
		if (target.isRawType() || target.isParameterizedType()) {
			genericType = genericType.getGenericType();
		}
		ResolvedMember parameterizedSignature = null;
		// If we are parameterizing it for a generic type, we just need to 'swap the letters' from the ones used
		// in the original ITD declaration to the ones used in the actual target type declaration.
		if (target.isGenericType()) {
			TypeVariable vars[] = target.getTypeVariables();
			UnresolvedTypeVariableReferenceType[] varRefs = new UnresolvedTypeVariableReferenceType[vars.length];
			for (int i = 0; i < vars.length; i++) {
				varRefs[i] = new UnresolvedTypeVariableReferenceType(vars[i]);
			}
			parameterizedSignature = getSignature().parameterizedWith(varRefs, genericType, true, typeVariableAliases);
		} else {
			// For raw and 'normal' parameterized targets (e.g. Interface, Interface)
			parameterizedSignature = getSignature().parameterizedWith(target.getTypeParameters(), genericType,
					target.isParameterizedType(), typeVariableAliases);
		}
		NewMethodTypeMunger nmtm = new NewMethodTypeMunger(parameterizedSignature, getSuperMethodsCalled(), typeVariableAliases);
		nmtm.setDeclaredSignature(getSignature());
		nmtm.setSourceLocation(getSourceLocation());
		return nmtm;
	}

	public boolean equals(Object other) {
		if (!(other instanceof NewMethodTypeMunger)) {
			return false;
		}
		NewMethodTypeMunger o = (NewMethodTypeMunger) other;
		return ((kind == null) ? (o.kind == null) : kind.equals(o.kind))
				&& ((signature == null) ? (o.signature == null) : signature.equals(o.signature))
				&& ((declaredSignature == null) ? (o.declaredSignature == null) : declaredSignature.equals(o.declaredSignature))
				&& ((typeVariableAliases == null) ? (o.typeVariableAliases == null) : typeVariableAliases
						.equals(o.typeVariableAliases));
	}

	public int hashCode() {
		int result = 17;
		result = 37 * result + kind.hashCode();
		result = 37 * result + ((signature == null) ? 0 : signature.hashCode());
		result = 37 * result + ((declaredSignature == null) ? 0 : declaredSignature.hashCode());
		result = 37 * result + ((typeVariableAliases == null) ? 0 : typeVariableAliases.hashCode());
		return result;
	}

	public ResolvedTypeMunger parameterizeWith(Map m, World w) {
		ResolvedMember parameterizedSignature = getSignature().parameterizedWith(m, w);
		NewMethodTypeMunger nmtm = new NewMethodTypeMunger(parameterizedSignature, getSuperMethodsCalled(), typeVariableAliases);
		nmtm.setDeclaredSignature(getSignature());
		nmtm.setSourceLocation(getSourceLocation());
		return nmtm;
	}

}