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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) 2004 IBM Corporation and others.
 * 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:
 *     IBM Corporation
 *******************************************************************************/
package org.aspectj.ajdt.internal.compiler.ast;

import java.util.ArrayList;
import java.util.List;

import org.aspectj.org.eclipse.jdt.internal.compiler.IAttribute;
import org.aspectj.weaver.AjAttribute;
import org.aspectj.org.eclipse.jdt.internal.compiler.ClassFile;
import org.aspectj.org.eclipse.jdt.internal.compiler.CompilationResult;
import org.aspectj.org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
import org.aspectj.org.eclipse.jdt.internal.compiler.classfmt.ClassFileConstants;

/**
 * Root class for all ConstructorDeclaration objects created by the parser.
 * Enables us to generate extra attributes in the method_info attribute
 * to support aspectj.
 */
public class AjConstructorDeclaration extends ConstructorDeclaration {

	/**
	 * @param compilationResult
	 */
	public AjConstructorDeclaration(CompilationResult compilationResult) {
		super(compilationResult);
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration#generateInfoAttributes(org.eclipse.jdt.internal.compiler.ClassFile)
	 */
	protected int generateInfoAttributes(ClassFile classFile) {
		// add extra attributes into list then call 2-arg version of generateInfoAttributes...
		List extras = new ArrayList<>();
		addDeclarationStartLineAttribute(extras,classFile);
		return classFile.generateMethodInfoAttributes(binding,extras);
	}

	protected void addDeclarationStartLineAttribute(List extraAttributeList, ClassFile classFile) {
		if ((classFile.codeStream.generateAttributes & ClassFileConstants.ATTR_LINES)==0) return;

		int[] separators = compilationResult().lineSeparatorPositions;
		int declarationStartLine = 1;
		for (int separator : separators) {
			if (sourceStart < separator) break;
			declarationStartLine++;
		}

		extraAttributeList.add(
				new EclipseAttributeAdapter(new AjAttribute.MethodDeclarationLineNumberAttribute(declarationStartLine, this.sourceStart())));
	}
}