dataflow.src.org.checkerframework.dataflow.cfg.node.ArrayAccessNode Maven / Gradle / Ivy
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The Checker Framework enhances Java’s type system to
make it more powerful and useful. This lets software developers
detect and prevent errors in their Java programs.
The Checker Framework includes compiler plug-ins ("checkers")
that find bugs or verify their absence. It also permits you to
write your own compiler plug-ins.
package org.checkerframework.dataflow.cfg.node;
import java.util.Collection;
import java.util.LinkedList;
import org.checkerframework.dataflow.util.HashCodeUtils;
import org.checkerframework.javacutil.InternalUtils;
import com.sun.source.tree.ArrayAccessTree;
import com.sun.source.tree.Tree;
/**
* A node for an array access:
*
*
* array ref [ index ]
*
*
* We allow array accesses without corresponding AST {@link Tree}s.
*
* @author Stefan Heule
* @author Charlie Garrett
*
*/
public class ArrayAccessNode extends Node {
protected Tree tree;
protected Node array;
protected Node index;
public ArrayAccessNode(Tree t, Node array, Node index) {
super(InternalUtils.typeOf(t));
assert t instanceof ArrayAccessTree;
this.tree = t;
this.array = array;
this.index = index;
}
public Node getArray() {
return array;
}
public Node getIndex() {
return index;
}
@Override
public Tree getTree() {
return tree;
}
@Override
public R accept(NodeVisitor visitor, P p) {
return visitor.visitArrayAccess(this, p);
}
@Override
public String toString() {
String base = getArray().toString() + "[" + getIndex().toString() + "]";
return base;
}
@Override
public boolean equals(Object obj) {
if (obj == null || !(obj instanceof ArrayAccessNode)) {
return false;
}
ArrayAccessNode other = (ArrayAccessNode) obj;
return getArray().equals(other.getArray())
&& getIndex().equals(other.getIndex());
}
@Override
public int hashCode() {
return HashCodeUtils.hash(getArray(), getIndex());
}
@Override
public Collection getOperands() {
LinkedList list = new LinkedList();
list.add(getArray());
list.add(getIndex());
return list;
}
}