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82 lines
2.8 KiB
Java
82 lines
2.8 KiB
Java
/*
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* @(#) $(JCGO)/jtrsrc/com/ivmaisoft/jcgo/PrefixOp.java --
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* a part of JCGO translator.
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**
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* Project: JCGO (http://www.ivmaisoft.com/jcgo/)
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* Copyright (C) 2001-2012 Ivan Maidanski <ivmai@mail.ru>
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* All rights reserved.
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*/
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/*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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**
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* This software is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License (GPL) for more details.
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**
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* Linking this library statically or dynamically with other modules is
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* making a combined work based on this library. Thus, the terms and
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* conditions of the GNU General Public License cover the whole
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* combination.
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**
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* As a special exception, the copyright holders of this library give you
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* permission to link this library with independent modules to produce an
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* executable, regardless of the license terms of these independent
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* modules, and to copy and distribute the resulting executable under
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* terms of your choice, provided that you also meet, for each linked
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* independent module, the terms and conditions of the license of that
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* module. An independent module is a module which is not derived from
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* or based on this library. If you modify this library, you may extend
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* this exception to your version of the library, but you are not
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* obligated to do so. If you do not wish to do so, delete this
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* exception statement from your version.
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*/
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package com.ivmaisoft.jcgo;
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/**
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* Grammar production for prefix increment and decrement operations.
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**
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* Formats: INCREMENT UnaryExpression DECREMENT UnaryExpression
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*/
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final class PrefixOp extends LexNode {
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PrefixOp(Term a, Term b) {
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super(a, b);
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}
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void processPass1(Context c) {
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c.lvalue = true;
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terms[1].processPass1(c);
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c.lvalue = false;
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int s1 = terms[1].exprType().objectSize();
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if (s1 < Type.BYTE || s1 > Type.DOUBLE) {
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fatalError(c, "Inappropriate type in unary expression");
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}
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}
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ExpressionType exprType() {
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return terms[1].exprType();
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}
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void processOutput(OutputContext oc) {
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VariableDefinition v = terms[1].getVariable(true);
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if (v != null && v.isThreadVolatile()) {
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oc.cPrint(terms[0].getSym() == LexTerm.INCREMENT ? "JCGO_VLT_PREINC"
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: "JCGO_VLT_PREDECR");
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oc.cPrint(Type.sig[terms[1].exprType().objectSize()]);
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oc.cPrint("(");
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terms[1].processOutput(oc);
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oc.cPrint(")");
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} else {
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terms[0].processOutput(oc);
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terms[1].processOutput(oc);
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}
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}
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}
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