/*
* Copyright (C) 2012 RoboVM AB
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/gpl-2.0.html>.
*/
package org.robovm.compiler.llvm;
/**
*
* @version $Id$
*/
public class ConstantGetelementptr extends Constant {
private final Constant cst;
private final int[] idx;
public ConstantGetelementptr(Constant cst, int ... idx) {
if (!cst.isPointer()) {
throw new IllegalArgumentException("PointerType expected");
}
if (!(((PointerType) cst.getType()).getBase() instanceof AggregateType)) {
throw new IllegalArgumentException("PointerType should point to AggregateType");
}
if (idx == null || idx.length == 0) {
throw new IllegalArgumentException("No indexes");
}
this.cst = cst;
this.idx = idx;
}
@Override
public Type getType() {
Type t = (AggregateType) ((PointerType) cst.getType()).getBase();
for (int i = 1; i < idx.length; i++) {
t = ((AggregateType) t).getTypeAt(idx[i]);
}
return new PointerType(t);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("getelementptr (");
sb.append(cst.getType());
sb.append(' ');
sb.append(cst);
for (int i = 0; i < idx.length; i++) {
sb.append(", i32 ");
sb.append(idx[i]);
}
sb.append(")");
return sb.toString();
}
}