VariableDeclarator.java

/*
 * @(#) $(JCGO)/jtrsrc/com/ivmaisoft/jcgo/VariableDeclarator.java --
 * a part of JCGO translator.
 **
 * Project: JCGO (http://www.ivmaisoft.com/jcgo/)
 * Copyright (C) 2001-2012 Ivan Maidanski <ivmai@mail.ru>
 * All rights reserved.
 */

/*
 * This is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 **
 * This software 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 (GPL) for more details.
 **
 * Linking this library statically or dynamically with other modules is
 * making a combined work based on this library. Thus, the terms and
 * conditions of the GNU General Public License cover the whole
 * combination.
 **
 * As a special exception, the copyright holders of this library give you
 * permission to link this library with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module. An independent module is a module which is not derived from
 * or based on this library. If you modify this library, you may extend
 * this exception to your version of the library, but you are not
 * obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 */

package com.ivmaisoft.jcgo;

/**
 * Grammar production for the declaration part of a variable definition.
 ** 
 * Formats: VariableIdentifier [Dims] Empty Empty VariableIdentifier [Dims]
 * EQUALS VariableInitializer
 */

final class VariableDeclarator extends LexNode {

    private ExpressionType exprType0;

    VariableDeclarator(Term a, Term b, Term d) {
        super(a, b, d);
    }

    void processPass1(Context c) {
        c.varInitializer = terms[2];
        terms[1].processPass1(c);
        terms[0].processPass1(c);
        if ((c.modifiers & AccModifier.LOCALVAR) != 0 && terms[2].notEmpty()) {
            exprType0 = terms[0].exprType();
            if (exprType0 == terms[2].exprType()) {
                exprType0 = null;
            }
        }
    }

    void discoverObjLeaks() {
        if (terms[2].notEmpty()) {
            terms[2].discoverObjLeaks();
            VariableDefinition v = terms[0].getVariable(false);
            assertCond(v != null);
            if (v.exprType().objectSize() >= Type.CLASSINTERFACE) {
                terms[2].setObjLeaks(v);
            }
        }
    }

    void processOutput(OutputContext oc) {
        if (terms[2].notEmpty() && !terms[0].isLiteral()) {
            terms[0].processOutput(oc);
            oc.cPrint("= ");
            if (exprType0 != null) {
                oc.cPrint("(");
                oc.cPrint(exprType0.castName());
                oc.cPrint(")");
                terms[2].atomaryOutput(oc);
            } else {
                terms[2].processOutput(oc);
            }
        }
    }
}