/* * All files in the distribution of BLOAT (Bytecode Level Optimization and * Analysis tool for Java(tm)) are Copyright 1997-2001 by the Purdue * Research Foundation of Purdue University. All rights reserved. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ package EDU.purdue.cs.bloat.tree; import EDU.purdue.cs.bloat.editor.*; /** * CallMethodExpr represents the invocation of an object's method. In addition * to knowing what method is being called and its parameters, it also knows what * "kind" of method call it is (VIRTUAL, NONVIRTUAL, or * INTERFACE) and the object that is the reciever of this method * call. * * @see CallStaticExpr */ public class CallMethodExpr extends CallExpr { // Different kinds of methods to call... public static final int VIRTUAL = 0; // invokevirtual public static final int NONVIRTUAL = 1; // invokespecial public static final int INTERFACE = 2; // invokeinterface Expr receiver; int kind; /** * Constructor. * * @param kind * The kind (VIRTUAL, NONVIRTUAL, or INTERFACE) of method that is * being called. * @param receiver * The expression (object) whose method is being called. * @param params * Parameters to the method. * @param method * The method being called. * @param type * The type of this expression. */ public CallMethodExpr(final int kind, final Expr receiver, final Expr[] params, final MemberRef method, final Type type) { super(params, method, type); this.receiver = receiver; this.kind = kind; receiver.setParent(this); } public int kind() { return kind; } public Expr receiver() { return receiver; } public void visitForceChildren(final TreeVisitor visitor) { if (visitor.reverse()) { for (int i = params.length - 1; i >= 0; i--) { params[i].visit(visitor); } receiver.visit(visitor); } else { receiver.visit(visitor); for (int i = 0; i < params.length; i++) { params[i].visit(visitor); } } } public void visit(final TreeVisitor visitor) { visitor.visitCallMethodExpr(this); } public int exprHashCode() { int v = 5 + kind ^ receiver.exprHashCode(); for (int i = 0; i < params.length; i++) { v ^= params[i].exprHashCode(); } return v; } public boolean equalsExpr(final Expr other) { return false; } public Object clone() { final Expr[] p = new Expr[params.length]; for (int i = 0; i < params.length; i++) { p[i] = (Expr) params[i].clone(); } return copyInto(new CallMethodExpr(kind, (Expr) receiver.clone(), p, method, type)); } }