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 * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * 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,
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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.
/** * 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 CommaExpression extends BinaryExpression {
constructor
/** * constructor */
public CommaExpression(long where, Expression left, Expression right) { super(COMMA, where, (right != null) ? right.type : Type.tVoid, left, right); }
Check void expression
/** * Check void expression */
public Vset check(Environment env, Context ctx, Vset vset, Hashtable<Object, Object> exp) { vset = left.check(env, ctx, vset, exp); vset = right.check(env, ctx, vset, exp); return vset; }
Select the type
/** * Select the type */
void selectType(Environment env, Context ctx, int tm) { type = right.type; }
Simplify
/** * Simplify */
Expression simplify() { if (left == null) { return right; } if (right == null) { return left; } return this; }
Inline
/** * Inline */
public Expression inline(Environment env, Context ctx) { if (left != null) { left = left.inline(env, ctx); } if (right != null) { right = right.inline(env, ctx); } return simplify(); } public Expression inlineValue(Environment env, Context ctx) { if (left != null) { left = left.inline(env, ctx); } if (right != null) { right = right.inlineValue(env, ctx); } return simplify(); }
Code
/** * Code */
int codeLValue(Environment env, Context ctx, Assembler asm) { if (right == null) { // throw an appropriate error return super.codeLValue(env, ctx, asm); } else { // Fully code the left-hand side. Do the LValue part of the // right-hand side now. The remainder will be done by codeLoad or // codeStore if (left != null) { left.code(env, ctx, asm); } return right.codeLValue(env, ctx, asm); } } void codeLoad(Environment env, Context ctx, Assembler asm) { // The left-hand part has already been handled by codeLValue. if (right == null) { // throw an appropriate error super.codeLoad(env, ctx, asm); } else { right.codeLoad(env, ctx, asm); } } void codeStore(Environment env, Context ctx, Assembler asm) { // The left-hand part has already been handled by codeLValue. if (right == null) { // throw an appropriate error super.codeStore(env, ctx, asm); } else { right.codeStore(env, ctx, asm); } } public void codeValue(Environment env, Context ctx, Assembler asm) { if (left != null) { left.code(env, ctx, asm); } right.codeValue(env, ctx, asm); } public void code(Environment env, Context ctx, Assembler asm) { if (left != null) { left.code(env, ctx, asm); } if (right != null) { right.code(env, ctx, asm); } } }