/**
* Copyright 2009, Google Inc. All rights reserved.
* Licensed to PSF under a Contributor Agreement.
*/
package org.python.indexer.ast;
import org.python.indexer.Scope;
import org.python.indexer.types.NListType;
import org.python.indexer.types.NType;
public class NSlice extends NNode {
static final long serialVersionUID = 8685364390631331543L;
public NNode lower;
public NNode step;
public NNode upper;
public NSlice(NNode lower, NNode step, NNode upper) {
this(lower, step, upper, 0, 1);
}
public NSlice(NNode lower, NNode step, NNode upper, int start, int end) {
super(start, end);
this.lower = lower;
this.step = step;
this.upper = upper;
addChildren(lower, step, upper);
}
@Override
public NType resolve(Scope s) throws Exception {
resolveExpr(lower, s);
resolveExpr(step, s);
resolveExpr(upper, s);
return setType(new NListType());
}
@Override
public String toString() {
return "<Slice:" + lower + ":" + step + ":" + upper + ">";
}
@Override
public void visit(NNodeVisitor v) {
if (v.visit(this)) {
visitNode(lower, v);
visitNode(step, v);
visitNode(upper, v);
}
}
}