Java tutorial
/******************************************************************************* * 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.eclipse.jdt.core.dom; import java.util.ArrayList; import java.util.List; /** * Super constructor invocation statement AST node type. * <pre> * SuperConstructorInvocation: * [ Expression <b>.</b> ] * [ <b><</b> Type { <b>,</b> Type } <b>></b> ] * <b>super</b> <b>(</b> [ Expression { <b>,</b> Expression } ] <b>)</b> <b>;</b> * </pre> * * @since 2.0 * @noinstantiate This class is not intended to be instantiated by clients. */ @SuppressWarnings({ "rawtypes", "unchecked" }) public class SuperConstructorInvocation 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( SuperConstructorInvocation.class, "expression", Expression.class, OPTIONAL, CYCLE_RISK); //$NON-NLS-1$ /** * The "typeArguments" structural property of this node type (element type: {@link Type}) (added in JLS3 API). * @since 3.1 */ public static final ChildListPropertyDescriptor TYPE_ARGUMENTS_PROPERTY = new ChildListPropertyDescriptor( SuperConstructorInvocation.class, "typeArguments", Type.class, NO_CYCLE_RISK); //$NON-NLS-1$ /** * The "arguments" structural property of this node type (element type: {@link Expression}). * @since 3.0 */ public static final ChildListPropertyDescriptor ARGUMENTS_PROPERTY = new ChildListPropertyDescriptor( SuperConstructorInvocation.class, "arguments", Expression.class, CYCLE_RISK); //$NON-NLS-1$ /** * A list of property descriptors (element type: * {@link StructuralPropertyDescriptor}), * or null if uninitialized. * @since 3.0 */ private static final List PROPERTY_DESCRIPTORS_2_0; /** * A list of property descriptors (element type: * {@link StructuralPropertyDescriptor}), * or null if uninitialized. * @since 3.1 */ private static final List PROPERTY_DESCRIPTORS_3_0; static { List propertyList = new ArrayList(3); createPropertyList(SuperConstructorInvocation.class, propertyList); addProperty(EXPRESSION_PROPERTY, propertyList); addProperty(ARGUMENTS_PROPERTY, propertyList); PROPERTY_DESCRIPTORS_2_0 = reapPropertyList(propertyList); propertyList = new ArrayList(4); createPropertyList(SuperConstructorInvocation.class, propertyList); addProperty(EXPRESSION_PROPERTY, propertyList); addProperty(TYPE_ARGUMENTS_PROPERTY, propertyList); addProperty(ARGUMENTS_PROPERTY, propertyList); PROPERTY_DESCRIPTORS_3_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 * <code>AST.JLS*</code> constants * @return a list of property descriptors (element type: * {@link StructuralPropertyDescriptor}) * @since 3.0 */ public static List propertyDescriptors(int apiLevel) { if (apiLevel == AST.JLS2_INTERNAL) { return PROPERTY_DESCRIPTORS_2_0; } else { return PROPERTY_DESCRIPTORS_3_0; } } /** * The expression; <code>null</code> for none; defaults to none. */ private Expression optionalExpression = null; /** * The type arguments (element type: {@link Type}). * Null in JLS2. Added in JLS3; defaults to an empty list * (see constructor). * @since 3.1 */ private ASTNode.NodeList typeArguments = null; /** * The list of argument expressions (element type: * {@link Expression}). Defaults to an empty list. */ private ASTNode.NodeList arguments = new ASTNode.NodeList(ARGUMENTS_PROPERTY); /** * Creates a new AST node for an super constructor invocation statement * owned by the given AST. By default, no type arguments, and an empty list * of arguments. * * @param ast the AST that is to own this node */ SuperConstructorInvocation(AST ast) { super(ast); if (ast.apiLevel >= AST.JLS3_INTERNAL) { this.typeArguments = new ASTNode.NodeList(TYPE_ARGUMENTS_PROPERTY); } } @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; } } // allow default implementation to flag the error return super.internalGetSetChildProperty(property, get, child); } @Override final List internalGetChildListProperty(ChildListPropertyDescriptor property) { if (property == ARGUMENTS_PROPERTY) { return arguments(); } if (property == TYPE_ARGUMENTS_PROPERTY) { return typeArguments(); } // allow default implementation to flag the error return super.internalGetChildListProperty(property); } @Override final int getNodeType0() { return SUPER_CONSTRUCTOR_INVOCATION; } @Override ASTNode clone0(AST target) { SuperConstructorInvocation result = new SuperConstructorInvocation(target); result.setSourceRange(getStartPosition(), getLength()); result.copyLeadingComment(this); result.setExpression((Expression) ASTNode.copySubtree(target, getExpression())); if (this.ast.apiLevel >= AST.JLS3_INTERNAL) { result.typeArguments().addAll(ASTNode.copySubtrees(target, typeArguments())); } result.arguments().addAll(ASTNode.copySubtrees(target, arguments())); 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()); if (this.ast.apiLevel >= AST.JLS3_INTERNAL) { acceptChildren(visitor, this.typeArguments); } acceptChildren(visitor, this.arguments); } visitor.endVisit(this); } /** * Returns the expression of this super constructor invocation statement, * or <code>null</code> if there is none. * * @return the expression node, or <code>null</code> if there is none */ public Expression getExpression() { return this.optionalExpression; } /** * Sets or clears the expression of this super constructor invocation * statement. * * @param expression the expression 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> * <li>a cycle in would be created</li> * </ul> */ public void setExpression(Expression expression) { ASTNode oldChild = this.optionalExpression; preReplaceChild(oldChild, expression, EXPRESSION_PROPERTY); this.optionalExpression = expression; postReplaceChild(oldChild, expression, EXPRESSION_PROPERTY); } /** * Returns the live ordered list of type arguments of this constructor * invocation (added in JLS3 API). * * @return the live list of type arguments * (element type: {@link Type}) * @exception UnsupportedOperationException if this operation is used in * a JLS2 AST * @since 3.1 */ public List typeArguments() { // more efficient than just calling unsupportedIn2() to check if (this.typeArguments == null) { unsupportedIn2(); } return this.typeArguments; } /** * Returns the live ordered list of argument expressions in this super * constructor invocation statement. * * @return the live list of argument expressions * (element type: {@link Expression}) */ public List arguments() { return this.arguments; } /** * Resolves and returns the binding for the constructor invoked by this * expression. * <p> * Note that bindings are generally unavailable unless requested when the * AST is being built. * </p> * * @return the constructor binding, or <code>null</code> if the binding * cannot be resolved */ public IMethodBinding resolveConstructorBinding() { return this.ast.getBindingResolver().resolveConstructor(this); } @Override int memSize() { // treat Code as free return BASE_NODE_SIZE + 3 * 4; } @Override int treeSize() { return memSize() + (this.optionalExpression == null ? 0 : getExpression().treeSize()) + (this.typeArguments == null ? 0 : this.typeArguments.listSize()) + (this.arguments == null ? 0 : this.arguments.listSize()); } }