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authorStephan Herrmann2010-04-01 19:56:59 +0000
committerStephan Herrmann2010-04-01 19:56:59 +0000
commit7b7062f3b12bba7ef33116efb94da1f54e069625 (patch)
tree953104b5ab329138aac4d340fb014e321cd658a2 /org.eclipse.jdt.core/dom/org/eclipse/jdt/core/dom/SuperFieldAccess.java
parentb41f944c832b588bb998e321bf7fd9a4e1c62c08 (diff)
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initial commit in accordance with CQ 3784
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+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package org.eclipse.jdt.core.dom;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Simple or qualified "super" field access expression AST node type.
+ *
+ * <pre>
+ * SuperFieldAccess:
+ * [ ClassName <b>.</b> ] <b>super</b> <b>.</b> Identifier
+ * </pre>
+ *
+ * <p>
+ * See <code>FieldAccess</code> for guidelines on handling other expressions
+ * that resemble qualified names.
+ * </p>
+ *
+ * @see FieldAccess
+ * @since 2.0
+ * @noinstantiate This class is not intended to be instantiated by clients.
+ */
+public class SuperFieldAccess extends Expression {
+
+ /**
+ * The "qualifier" structural property of this node type.
+ * @since 3.0
+ */
+ public static final ChildPropertyDescriptor QUALIFIER_PROPERTY =
+ new ChildPropertyDescriptor(SuperFieldAccess.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(SuperFieldAccess.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;
+
+ static {
+ List propertyList = new ArrayList(3);
+ createPropertyList(SuperFieldAccess.class, propertyList);
+ addProperty(QUALIFIER_PROPERTY, propertyList);
+ addProperty(NAME_PROPERTY, propertyList);
+ PROPERTY_DESCRIPTORS = 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
+ * <code>AST.JLS*</code> 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 field; lazily initialized; defaults to an unspecified,
+ * but legal, simple field name.
+ */
+ private SimpleName fieldName = null;
+
+ /**
+ * Creates a new unparented node for a super field access expression owned
+ * by the given AST. By default, field name is an unspecified, but legal,
+ * name, and there is no qualifier.
+ * <p>
+ * N.B. This constructor is package-private.
+ * </p>
+ *
+ * @param ast the AST that is to own this node
+ */
+ SuperFieldAccess(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 int getNodeType0() {
+ return SUPER_FIELD_ACCESS;
+ }
+
+ /* (omit javadoc for this method)
+ * Method declared on ASTNode.
+ */
+ ASTNode clone0(AST target) {
+ SuperFieldAccess result = new SuperFieldAccess(target);
+ result.setSourceRange(getStartPosition(), getLength());
+ result.setName((SimpleName) ASTNode.copySubtree(target, getName()));
+ result.setQualifier((Name) ASTNode.copySubtree(target, getQualifier()));
+ 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());
+ }
+ visitor.endVisit(this);
+ }
+
+ /**
+ * Returns the qualifier of this "super" field access expression, 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 "super" field access expression.
+ *
+ * @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 field accessed in this "super" field access
+ * expression.
+ *
+ * @return the field name
+ */
+ public SimpleName getName() {
+ if (this.fieldName == null) {
+ // lazy init must be thread-safe for readers
+ synchronized (this) {
+ if (this.fieldName == null) {
+ preLazyInit();
+ this.fieldName = new SimpleName(this.ast);
+ postLazyInit(this.fieldName, NAME_PROPERTY);
+ }
+ }
+ }
+ return this.fieldName;
+ }
+
+ /**
+ * Resolves and returns the binding for the field accessed by this
+ * expression.
+ * <p>
+ * Note that bindings are generally unavailable unless requested when the
+ * AST is being built.
+ * </p>
+ *
+ * @return the variable binding, or <code>null</code> if the binding cannot
+ * be resolved
+ * @since 3.0
+ */
+ public IVariableBinding resolveFieldBinding() {
+ return this.ast.getBindingResolver().resolveField(this);
+ }
+
+ /**
+ * Sets the name of the field accessed in this "super" field access
+ * expression.
+ *
+ * @param fieldName the field name
+ * @exception IllegalArgumentException if:
+ * <ul>
+ * <li>the node belongs to a different AST</li>
+ * <li>the node already has a parent</li>
+ * </ul>
+ */
+ public void setName(SimpleName fieldName) {
+ if (fieldName == null) {
+ throw new IllegalArgumentException();
+ }
+ ASTNode oldChild = this.fieldName;
+ preReplaceChild(oldChild, fieldName, NAME_PROPERTY);
+ this.fieldName = fieldName;
+ postReplaceChild(oldChild, fieldName, NAME_PROPERTY);
+ }
+
+ /* (omit javadoc for this method)
+ * Method declared on ASTNode.
+ */
+ int memSize() {
+ // treat Code as free
+ return BASE_NODE_SIZE + 2 * 4;
+ }
+
+ /* (omit javadoc for this method)
+ * Method declared on ASTNode.
+ */
+ int treeSize() {
+ return
+ memSize()
+ + (this.optionalQualifier == null ? 0 : getQualifier().treeSize())
+ + (this.fieldName == null ? 0 : getName().treeSize());
+ }
+}
+

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