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106 lines
3.3 KiB
106 lines
3.3 KiB
/* ConstantArrayOperator Copyright (C) 1998-1999 Jochen Hoenicke.
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*
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* This program 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 program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id$
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*/
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package jode.expr;
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import jode.Type;
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import jode.ArrayType;
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public class ConstantArrayOperator extends NoArgOperator {
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ConstOperator empty;
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Expression[] values;
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Type argType;
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boolean isInitializer;
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public ConstantArrayOperator(Type type, int size) {
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super(type);
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values = new Expression[size];
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argType = (type instanceof ArrayType)
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? Type.tSubType(((ArrayType)type).getElementType()) : Type.tError;
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Object emptyVal;
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if (argType == type.tError || argType.isOfType(Type.tUObject))
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emptyVal = null;
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else if (argType.isOfType(Type.tBoolUInt))
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emptyVal = new Integer(0);
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else if (argType.isOfType(Type.tLong))
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emptyVal = new Long(0);
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else if (argType.isOfType(Type.tFloat))
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emptyVal = new Float(0);
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else if (argType.isOfType(Type.tDouble))
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emptyVal = new Double(0);
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else
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throw new IllegalArgumentException("Illegal Type: "+argType);
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empty = new ConstOperator(emptyVal);
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empty.setType(argType);
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empty.makeInitializer();
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}
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public void setType(Type newtype) {
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super.setType(newtype);
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Type newArgType = (this.type instanceof ArrayType)
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? Type.tSubType(((ArrayType)this.type).getElementType())
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: Type.tError;
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if (!newArgType.equals(argType)) {
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argType = newArgType;
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empty.setType(argType);
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for (int i=0; i< values.length; i++)
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if (values[i] != null)
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values[i].setType(argType);
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}
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}
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public boolean setValue(int index, Expression value) {
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if (index < 0 || index > values.length || values[index] != null)
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return false;
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value.setType(argType);
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setType(Type.tSuperType(Type.tArray(value.getType())));
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values[index] = value;
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value.parent = this;
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value.makeInitializer();
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return true;
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}
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public int getPriority() {
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return 200;
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}
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public void makeInitializer() {
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isInitializer = true;
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}
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public Expression simplify() {
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for (int i=0; i< values.length; i++) {
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if (values[i] != null)
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values[i] = values[i].simplify();
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}
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return this;
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}
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public String toString(String[] operands) {
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StringBuffer result = isInitializer ? new StringBuffer("{ ")
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: new StringBuffer("new ").append(type).append(" { ");
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for (int i=0; i< values.length; i++) {
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if (i>0)
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result.append(", ");
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result.append((values[i] != null) ? values[i] : empty);
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}
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return result.append(" }").toString();
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}
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}
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