| /* |
| * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.tree; |
| |
| import sun.tools.java.*; |
| import sun.tools.asm.Assembler; |
| import java.util.Hashtable; |
| |
| /** |
| * WARNING: The contents of this source file are not part of any |
| * supported API. Code that depends on them does so at its own risk: |
| * they are subject to change or removal without notice. |
| */ |
| public |
| class BinaryAssignExpression extends BinaryExpression { |
| Expression implementation; |
| |
| /** |
| * Constructor |
| */ |
| BinaryAssignExpression(int op, long where, Expression left, Expression right) { |
| super(op, where, left.type, left, right); |
| } |
| |
| public Expression getImplementation() { |
| if (implementation != null) |
| return implementation; |
| return this; |
| } |
| |
| /** |
| * Order the expression based on precedence |
| */ |
| public Expression order() { |
| if (precedence() >= left.precedence()) { |
| UnaryExpression e = (UnaryExpression)left; |
| left = e.right; |
| e.right = order(); |
| return e; |
| } |
| return this; |
| } |
| |
| /** |
| * Check void expression |
| */ |
| public Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) { |
| return checkValue(env, ctx, vset, exp); |
| } |
| |
| /** |
| * Inline |
| */ |
| public Expression inline(Environment env, Context ctx) { |
| if (implementation != null) |
| return implementation.inline(env, ctx); |
| return inlineValue(env, ctx); |
| } |
| public Expression inlineValue(Environment env, Context ctx) { |
| if (implementation != null) |
| return implementation.inlineValue(env, ctx); |
| left = left.inlineLHS(env, ctx); |
| right = right.inlineValue(env, ctx); |
| return this; |
| } |
| |
| public Expression copyInline(Context ctx) { |
| if (implementation != null) |
| return implementation.copyInline(ctx); |
| return super.copyInline(ctx); |
| } |
| |
| public int costInline(int thresh, Environment env, Context ctx) { |
| if (implementation != null) |
| return implementation.costInline(thresh, env, ctx); |
| return super.costInline(thresh, env, ctx); |
| } |
| } |