/* * 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. */publicclass CommaExpression extends BinaryExpression { /** * constructor */ public CommaExpression(long where, Expression left, Expression right) { super(COMMA, where, (right != null) ? right.type : Type.tVoid, left, right); } /** * Check void expression */ public Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) { vset = left.check(env, ctx, vset, exp); vset = right.check(env, ctx, vset, exp); return vset; } /** * Select the type */ void selectType(Environment env, Context ctx, int tm) { type = right.type; } /** * Simplify */ Expression simplify() { if (left == null) { return right; } if (right == null) { return left; } return this; } /** * 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 */ 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); } }}
/*
* 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 CommaExpression extends BinaryExpression {
/**
* constructor
*/
public CommaExpression(long where, Expression left, Expression right) {
super(COMMA, where, (right != null) ? right.type : Type.tVoid, left, right);
}
/**
* Check void expression
*/
public Vset check(Environment env, Context ctx, Vset vset, Hashtable exp) {
vset = left.check(env, ctx, vset, exp);
vset = right.check(env, ctx, vset, exp);
return vset;
}
/**
* Select the type
*/
void selectType(Environment env, Context ctx, int tm) {
type = right.type;
}
/**
* Simplify
*/
Expression simplify() {
if (left == null) {
return right;
}
if (right == null) {
return left;
}
return this;
}
/**
* 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
*/
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);
}
}
}