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/*******************************************************************************
* Copyright (c) 2013, 2014 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.eclipse.jdt.core.dom;
import java.util.ArrayList;
import java.util.List;
/**
* Expression method reference AST node type (added in JLS8 API).
*
* ExpressionMethodReference:
* Expression ::
* [ < Type { , Type } > ]
* Identifier
*
*
* @since 3.10
* @noinstantiate This class is not intended to be instantiated by clients.
*/
@SuppressWarnings({"rawtypes", "unchecked"})
public class ExpressionMethodReference extends MethodReference {
/**
* The "expression" structural property of this node type (child type: {@link Expression}).
*/
public static final ChildPropertyDescriptor EXPRESSION_PROPERTY =
new ChildPropertyDescriptor(ExpressionMethodReference.class, "expression", Expression.class, MANDATORY, CYCLE_RISK); //$NON-NLS-1$
/**
* The "typeArguments" structural property of this node type (element type: {@link Type})
*/
public static final ChildListPropertyDescriptor TYPE_ARGUMENTS_PROPERTY =
internalTypeArgumentsFactory(ExpressionMethodReference.class);
/**
* The "name" structural property of this node type (child type: {@link SimpleName}).
*/
public static final ChildPropertyDescriptor NAME_PROPERTY =
new ChildPropertyDescriptor(ExpressionMethodReference.class, "name", SimpleName.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$
/**
* A list of property descriptors (element type:
* {@link StructuralPropertyDescriptor}),
* or null if uninitialized.
*/
private static final List PROPERTY_DESCRIPTORS_8_0;
static {
List propertyList = new ArrayList(4);
createPropertyList(ExpressionMethodReference.class, propertyList);
addProperty(EXPRESSION_PROPERTY, propertyList);
addProperty(TYPE_ARGUMENTS_PROPERTY, propertyList);
addProperty(NAME_PROPERTY, propertyList);
PROPERTY_DESCRIPTORS_8_0 = reapPropertyList(propertyList);
}
/**
* 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})
*/
public static List propertyDescriptors(int apiLevel) {
return PROPERTY_DESCRIPTORS_8_0;
}
/**
* The expression; lazily initialized; defaults to an unspecified,
* legal expression.
*/
private Expression expression = null;
/**
* The method name; lazily initialized; defaults to an unspecified,
* legal Java method name.
*/
private SimpleName methodName = null;
/**
* Creates a new AST node for an ExpressionMethodReference declaration owned
* by the given AST.
*
* N.B. This constructor is package-private; all subclasses must be
* declared in the same package; clients are unable to declare
* additional subclasses.
*
*
* @param ast the AST that is to own this node
*/
ExpressionMethodReference(AST ast) {
super(ast);
unsupportedIn2_3_4();
}
@Override
final ChildListPropertyDescriptor internalTypeArgumentsProperty() {
return TYPE_ARGUMENTS_PROPERTY;
}
@Override
final List internalStructuralPropertiesForType(int apiLevel) {
return propertyDescriptors(apiLevel);
}
@Override
final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) {
if (property == NAME_PROPERTY) {
if (get) {
return getName();
} else {
setName((SimpleName) child);
return null;
}
}
if (property == EXPRESSION_PROPERTY) {
if (get) {
return getExpression();
} else {
setExpression((Expression) child);
return null;
}
}
// allow default implementation to flag the error
return super.internalGetSetChildProperty(property, get, child);
}
@Override
final List internalGetChildListProperty(ChildListPropertyDescriptor property) {
if (property == TYPE_ARGUMENTS_PROPERTY) {
return typeArguments();
}
// allow default implementation to flag the error
return super.internalGetChildListProperty(property);
}
@Override
final int getNodeType0() {
return EXPRESSION_METHOD_REFERENCE;
}
@Override
ASTNode clone0(AST target) {
ExpressionMethodReference result = new ExpressionMethodReference(target);
result.setSourceRange(getStartPosition(), getLength());
result.setExpression(
(Expression) ASTNode.copySubtree(target, getExpression()));
result.typeArguments().addAll(ASTNode.copySubtrees(target, typeArguments()));
result.setName((SimpleName) getName().clone(target));
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());
acceptChildren(visitor, this.typeArguments);
acceptChild(visitor, getName());
}
visitor.endVisit(this);
}
/**
* Returns the expression of this expression method reference expression
*
* @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 expression of this expression method reference.
*
* @param expression the 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();
}
ASTNode oldChild = this.expression;
preReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
this.expression = expression;
postReplaceChild(oldChild, expression, EXPRESSION_PROPERTY);
}
/**
* Returns the live ordered list of type arguments of this expression method reference
*
* @return the live list of type arguments
* (element type: {@link Type})
*/
@Override
public List typeArguments() {
return this.typeArguments;
}
/**
* Returns the name of the method referenced in this expression.
*
* @return the method name node
*/
public SimpleName getName() {
if (this.methodName == null) {
// lazy init must be thread-safe for readers
synchronized (this) {
if (this.methodName == null) {
preLazyInit();
this.methodName = new SimpleName(this.ast);
postLazyInit(this.methodName, NAME_PROPERTY);
}
}
}
return this.methodName;
}
/**
* Sets the name of the method referenced in this expression to the
* given name.
*
* @param name the new method name
* @exception IllegalArgumentException if:
*
* - the node belongs to a different AST
* - the node already has a parent
*
*/
public void setName(SimpleName name) {
if (name == null) {
throw new IllegalArgumentException();
}
ASTNode oldChild = this.methodName;
preReplaceChild(oldChild, name, NAME_PROPERTY);
this.methodName = name;
postReplaceChild(oldChild, name, NAME_PROPERTY);
}
@Override
int memSize() {
// treat Code as free
return BASE_NODE_SIZE + 3 * 4;
}
@Override
int treeSize() {
return
memSize()
+ (this.expression == null ? 0 : getExpression().treeSize())
+ (this.typeArguments == null ? 0 : this.typeArguments.listSize())
+ (this.methodName == null ? 0 : getName().treeSize());
}
}