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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, 2010 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
 *     Nieraj Singh
 * ******************************************************************/

package org.aspectj.weaver.patterns;

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

import org.aspectj.weaver.AjAttribute;
import org.aspectj.weaver.CompressingDataOutputStream;
import org.aspectj.weaver.ISourceContext;
import org.aspectj.weaver.IntMap;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.VersionedDataInputStream;
import org.aspectj.weaver.World;

public class BindingTypePattern extends ExactTypePattern implements BindingPattern {
	private int formalIndex;
	private String bindingName;

	public BindingTypePattern(UnresolvedType type, int index, boolean isVarArgs) {
		super(type, false, isVarArgs);
		this.formalIndex = index;
	}

	public BindingTypePattern(FormalBinding binding, boolean isVarArgs) {
		this(binding.getType(), binding.getIndex(), isVarArgs);
		this.bindingName = binding.getName();
	}

	public int getFormalIndex() {
		return formalIndex;
	}

	public String getBindingName() {
		return bindingName;
	}

	public boolean equals(Object other) {
		if (!(other instanceof BindingTypePattern)) {
			return false;
		}
		BindingTypePattern o = (BindingTypePattern) other;
		if (includeSubtypes != o.includeSubtypes) {
			return false;
		}
		if (isVarArgs != o.isVarArgs) {
			return false;
		}
		return o.type.equals(this.type) && o.formalIndex == this.formalIndex;
	}

	public int hashCode() {
		int result = 17;
		result = 37 * result + super.hashCode();
		result = 37 * result + formalIndex;
		return result;
	}

	public void write(CompressingDataOutputStream out) throws IOException {
		out.writeByte(TypePattern.BINDING);
		type.write(out);
		out.writeShort((short) formalIndex);
		out.writeBoolean(isVarArgs);
		writeLocation(out);
	}

	public static TypePattern read(VersionedDataInputStream s, ISourceContext context) throws IOException {
		UnresolvedType type = UnresolvedType.read(s);
		int index = s.readShort();
		boolean isVarargs = false;
		if (s.getMajorVersion() >= AjAttribute.WeaverVersionInfo.WEAVER_VERSION_MAJOR_AJ150) {
			isVarargs = s.readBoolean();
		}
		TypePattern ret = new BindingTypePattern(type, index, isVarargs);
		ret.readLocation(context, s);
		return ret;
	}

	public TypePattern remapAdviceFormals(IntMap bindings) {
		if (!bindings.hasKey(formalIndex)) {
			return new ExactTypePattern(type, false, isVarArgs);
		} else {
			int newFormalIndex = bindings.get(formalIndex);
			return new BindingTypePattern(type, newFormalIndex, isVarArgs);
		}
	}

	public TypePattern parameterizeWith(Map typeVariableMap, World w) {
		ExactTypePattern superParameterized = (ExactTypePattern) super.parameterizeWith(typeVariableMap, w);
		BindingTypePattern ret = new BindingTypePattern(superParameterized.getExactType(), this.formalIndex, this.isVarArgs);
		ret.copyLocationFrom(this);
		return ret;
	}

	public String toString() {
		// Thread.currentThread().dumpStack();
		return "BindingTypePattern(" + super.toString() + ", " + formalIndex + ")";
	}
}