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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.
/*******************************************************************************
* Copyright (c) 2000, 2013 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.aspectj.org.eclipse.jdt.core.dom;
import java.util.ArrayList;
import java.util.List;
/**
* Assert statement AST node type.
*
*
* AssertStatement:
* assert Expression [ : Expression ] ;
*
*
* @since 2.0
* @noinstantiate This class is not intended to be instantiated by clients.
*/
@SuppressWarnings("rawtypes")
public class AssertStatement extends Statement {
/**
* The "expression" structural property of this node type (child type: {@link Expression}).
* @since 3.0
*/
public static final ChildPropertyDescriptor EXPRESSION_PROPERTY =
new ChildPropertyDescriptor(AssertStatement.class, "expression", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
/**
* The "message" structural property of this node type (child type: {@link Expression}).
* @since 3.0
*/
public static final ChildPropertyDescriptor MESSAGE_PROPERTY =
new ChildPropertyDescriptor(AssertStatement.class, "message", Expression.class, OPTIONAL, CYCLE_RISK); //$NON-NLS-1$
/**
* A list of property descriptors (element type:
* {@link StructuralPropertyDescriptor}),
* or null if uninitialized.
*/
private static final List PROPERTY_DESCRIPTORS;
static {
List properyList = new ArrayList(3);
createPropertyList(AssertStatement.class, properyList);
addProperty(EXPRESSION_PROPERTY, properyList);
addProperty(MESSAGE_PROPERTY, properyList);
PROPERTY_DESCRIPTORS = reapPropertyList(properyList);
}
/**
* Returns a list of structural property descriptors for this node type.
* Clients must not modify the result.
*
* @param apiLevel the API level; one of the
* AST.JLS* constants
* @return a list of property descriptors (element type:
* {@link StructuralPropertyDescriptor})
* @since 3.0
*/
public static List propertyDescriptors(int apiLevel) {
return PROPERTY_DESCRIPTORS;
}
/**
* The expression; lazily initialized; defaults to a unspecified, but legal,
* expression.
*/
private Expression expression = null;
/**
* The message expression; null for none; defaults to none.
*/
private Expression optionalMessageExpression = null;
/**
* Creates a new unparented assert statement node owned by the given
* AST. By default, the assert statement has an unspecified, but legal,
* expression, and not message expression.
*
* N.B. This constructor is package-private.
*
*
* @param ast the AST that is to own this node
*/
AssertStatement(AST ast) {
super(ast);
}
@Override
final List internalStructuralPropertiesForType(int apiLevel) {
return propertyDescriptors(apiLevel);
}
@Override
final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
if (property == EXPRESSION_PROPERTY) {
if (get) {
return getExpression();
} else {
setExpression((Expression) child);
return null;
}
}
if (property == MESSAGE_PROPERTY) {
if (get) {
return getMessage();
} else {
setMessage((Expression) child);
return null;
}
}
// allow default implementation to flag the error
return super.internalGetSetChildProperty(property, get, child);
}
@Override
final int getNodeType0() {
return ASSERT_STATEMENT;
}
@Override
ASTNode clone0(AST target) {
AssertStatement result = new AssertStatement(target);
result.setSourceRange(getStartPosition(), getLength());
result.copyLeadingComment(this);
result.setExpression(
(Expression) ASTNode.copySubtree(target, getExpression()));
result.setMessage(
(Expression) ASTNode.copySubtree(target, getMessage()));
return result;
}
@Override
final boolean subtreeMatch0(ASTMatcher matcher, Object other) {
// dispatch to correct overloaded match method
return matcher.match(this, other);
}
@Override
void accept0(ASTVisitor visitor) {
boolean visitChildren = visitor.visit(this);
if (visitChildren) {
// visit children in normal left to right reading order
acceptChild(visitor, getExpression());
acceptChild(visitor, getMessage());
}
visitor.endVisit(this);
}
/**
* Returns the first expression of this assert statement.
*
* @return the expression node
*/
public Expression getExpression() {
if (this.expression == null) {
// lazy init must be thread-safe for readers
synchronized (this) {
if (this.expression == null) {
preLazyInit();
this.expression = new SimpleName(this.ast);
postLazyInit(this.expression, EXPRESSION_PROPERTY);
}
}
}
return this.expression;
}
/**
* Sets the first expression of this assert statement.
*
* @param expression the new expression node
* @exception IllegalArgumentException if:
*
* - the node belongs to a different AST
* - the node already has a parent
* - a cycle in would be created
*
*/
public void setExpression(Expression expression) {
if (expression == null) {
throw new IllegalArgumentException();
}
// an AssertStatement may occur inside an Expression - must check cycles
ASTNode oldChild = this.expression;
preReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
this.expression = expression;
postReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
}
/**
* Returns the message expression of this assert statement, or
* null if there is none.
*
* @return the message expression node, or null if there
* is none
*/
public Expression getMessage() {
return this.optionalMessageExpression;
}
/**
* Sets or clears the message expression of this assert statement.
*
* @param expression the message expression node, or null if
* there is none
* @exception IllegalArgumentException if:
*
* - the node belongs to a different AST
* - the node already has a parent
* - a cycle in would be created
*
*/
public void setMessage(Expression expression) {
// an AsertStatement may occur inside an Expression - must check cycles
ASTNode oldChild = this.optionalMessageExpression;
preReplaceChild(oldChild, expression, MESSAGE_PROPERTY);
this.optionalMessageExpression = expression;
postReplaceChild(oldChild, expression, MESSAGE_PROPERTY);
}
@Override
int memSize() {
return super.memSize() + 2 * 4;
}
@Override
int treeSize() {
return
memSize()
+ (this.expression == null ? 0 : getExpression().treeSize())
+ (this.optionalMessageExpression == null ? 0 : getMessage().treeSize());
}
}