| /******************************************************************************* |
| * Copyright (c) 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.jdt.core.dom; |
| |
| import java.util.List; |
| |
| /** |
| * AST node for a method or constructor reference within a doc comment |
| * ({@link Javadoc}). The principal uses of these are in "@see" and "@link" |
| * tag elements, for references to method and constructor members. |
| * <pre> |
| * MethodRef: |
| * [ Name ] <b>#</b> Identifier |
| * <b>(</b> [ MethodRefParameter | { <b>,</b> MethodRefParameter } ] <b>)</b> |
| * </pre> |
| * |
| * @see Javadoc |
| * @since 3.0 |
| */ |
| public class MethodRef extends ASTNode implements IDocElement { |
| |
| /** |
| * The "qualifier" structural property of this node type. |
| * @since 3.0 |
| */ |
| public static final ChildPropertyDescriptor QUALIFIER_PROPERTY = |
| new ChildPropertyDescriptor(MethodRef.class, "qualifier", Name.class, OPTIONAL, NO_CYCLE_RISK); //$NON-NLS-1$ |
| |
| /** |
| * The "name" structural property of this node type. |
| * @since 3.0 |
| */ |
| public static final ChildPropertyDescriptor NAME_PROPERTY = |
| new ChildPropertyDescriptor(MethodRef.class, "name", SimpleName.class, MANDATORY, NO_CYCLE_RISK); //$NON-NLS-1$ |
| |
| /** |
| * The "parameters" structural property of this node type. |
| * @since 3.0 |
| */ |
| public static final ChildListPropertyDescriptor PARAMETERS_PROPERTY = |
| new ChildListPropertyDescriptor(MethodRef.class, "parameters", MethodRefParameter.class, 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; |
| |
| static { |
| createPropertyList(MethodRef.class); |
| addProperty(QUALIFIER_PROPERTY); |
| addProperty(NAME_PROPERTY); |
| addProperty(PARAMETERS_PROPERTY); |
| PROPERTY_DESCRIPTORS = reapPropertyList(); |
| } |
| |
| /** |
| * 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 optional qualifier; <code>null</code> for none; defaults to none. |
| */ |
| private Name optionalQualifier = null; |
| |
| /** |
| * The method name; lazily initialized; defaults to a unspecified, |
| * legal Java method name. |
| */ |
| private SimpleName methodName = null; |
| |
| /** |
| * The parameter declarations |
| * (element type: <code>MethodRefParameter</code>). |
| * Defaults to an empty list. |
| */ |
| private ASTNode.NodeList parameters = |
| new ASTNode.NodeList(PARAMETERS_PROPERTY); |
| |
| |
| /** |
| * Creates a new AST node for a method reference owned by the given |
| * AST. By default, the method reference is for a method with an |
| * unspecified, but legal, name; no qualifier; and an empty parameter |
| * list. |
| * <p> |
| * N.B. This constructor is package-private; all subclasses must be |
| * declared in the same package; clients are unable to declare |
| * additional subclasses. |
| * </p> |
| * |
| * @param ast the AST that is to own this node |
| */ |
| MethodRef(AST ast) { |
| super(ast); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| final List internalStructuralPropertiesForType(int apiLevel) { |
| return propertyDescriptors(apiLevel); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| final ASTNode internalGetSetChildProperty(ChildPropertyDescriptor property, boolean get, ASTNode child) { |
| if (property == QUALIFIER_PROPERTY) { |
| if (get) { |
| return getQualifier(); |
| } else { |
| setQualifier((Name) child); |
| return null; |
| } |
| } |
| if (property == NAME_PROPERTY) { |
| if (get) { |
| return getName(); |
| } else { |
| setName((SimpleName) child); |
| return null; |
| } |
| } |
| // allow default implementation to flag the error |
| return super.internalGetSetChildProperty(property, get, child); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| final List internalGetChildListProperty(ChildListPropertyDescriptor property) { |
| if (property == PARAMETERS_PROPERTY) { |
| return parameters(); |
| } |
| // allow default implementation to flag the error |
| return super.internalGetChildListProperty(property); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| final int getNodeType0() { |
| return METHOD_REF; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| ASTNode clone0(AST target) { |
| MethodRef result = new MethodRef(target); |
| result.setSourceRange(this.getStartPosition(), this.getLength()); |
| result.setQualifier((Name) ASTNode.copySubtree(target, getQualifier())); |
| result.setName((SimpleName) ASTNode.copySubtree(target, getName())); |
| result.parameters().addAll( |
| ASTNode.copySubtrees(target, parameters())); |
| return result; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| final boolean subtreeMatch0(ASTMatcher matcher, Object other) { |
| // dispatch to correct overloaded match method |
| return matcher.match(this, other); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| void accept0(ASTVisitor visitor) { |
| boolean visitChildren = visitor.visit(this); |
| if (visitChildren) { |
| // visit children in normal left to right reading order |
| acceptChild(visitor, getQualifier()); |
| acceptChild(visitor, getName()); |
| acceptChildren(visitor, this.parameters); |
| } |
| visitor.endVisit(this); |
| } |
| |
| /** |
| * Returns the qualifier of this method reference, or |
| * <code>null</code> if there is none. |
| * |
| * @return the qualifier name node, or <code>null</code> if there is none |
| */ |
| public Name getQualifier() { |
| return this.optionalQualifier; |
| } |
| |
| /** |
| * Sets or clears the qualifier of this method reference. |
| * |
| * @param name the qualifier name node, or <code>null</code> if |
| * there is none |
| * @exception IllegalArgumentException if: |
| * <ul> |
| * <li>the node belongs to a different AST</li> |
| * <li>the node already has a parent</li> |
| * </ul> |
| */ |
| public void setQualifier(Name name) { |
| ASTNode oldChild = this.optionalQualifier; |
| preReplaceChild(oldChild, name, QUALIFIER_PROPERTY); |
| this.optionalQualifier = name; |
| postReplaceChild(oldChild, name, QUALIFIER_PROPERTY); |
| } |
| |
| /** |
| * Returns the name of the referenced method or constructor. |
| * |
| * @return the method or constructor 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 referenced method or constructor to the |
| * given name. |
| * |
| * @param name the new method or constructor name node |
| * @exception IllegalArgumentException if: |
| * <ul> |
| * <li>the name is <code>null</code></li> |
| * <li>the node belongs to a different AST</li> |
| * <li>the node already has a parent</li> |
| * </ul> |
| */ |
| 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); |
| } |
| |
| /** |
| * Returns the live ordered list of method parameter references for this |
| * method reference. |
| * |
| * @return the live list of method parameter references |
| * (element type: <code>MethodRefParameter</code>) |
| */ |
| public List parameters() { |
| return this.parameters; |
| } |
| |
| /** |
| * Resolves and returns the binding for the entity referred to by |
| * this method reference. |
| * <p> |
| * Note that bindings are generally unavailable unless requested when the |
| * AST is being built. |
| * </p> |
| * |
| * @return the binding, or <code>null</code> if the binding cannot be |
| * resolved |
| */ |
| public final IBinding resolveBinding() { |
| return this.ast.getBindingResolver().resolveReference(this); |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int memSize() { |
| return BASE_NODE_SIZE + 3 * 4; |
| } |
| |
| /* (omit javadoc for this method) |
| * Method declared on ASTNode. |
| */ |
| int treeSize() { |
| return |
| memSize() |
| + (this.optionalQualifier == null ? 0 : getQualifier().treeSize()) |
| + (this.methodName == null ? 0 : getName().treeSize()) |
| + this.parameters.listSize(); |
| } |
| } |
| |