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package org.checkerframework.dataflow.cfg.node;
import com.sun.source.tree.Tree;
import java.util.Collection;
import java.util.Collections;
import javax.lang.model.type.TypeMirror;
import org.checkerframework.dataflow.util.HashCodeUtils;
import org.checkerframework.javacutil.TypesUtils;
/**
* A node for the widening primitive conversion operation. See JLS 5.1.2 for the definition of
* widening primitive conversion.
*
* <p>A {@link WideningConversionNode} does not correspond to any tree node in the parsed AST. It is
* introduced when a value of some primitive type appears in a context that requires a different
* primitive with more bits of precision.
*
* @author Stefan Heule
* @author Charlie Garrett
*/
public class WideningConversionNode extends Node {
protected Tree tree;
protected Node operand;
public WideningConversionNode(Tree tree, Node operand, TypeMirror type) {
super(type);
assert TypesUtils.isPrimitive(type) : "non-primitive type in widening conversion";
this.tree = tree;
this.operand = operand;
}
public Node getOperand() {
return operand;
}
@Override
public TypeMirror getType() {
return type;
}
@Override
public Tree getTree() {
return tree;
}
@Override
public <R, P> R accept(NodeVisitor<R, P> visitor, P p) {
return visitor.visitWideningConversion(this, p);
}
@Override
public String toString() {
return "WideningConversion(" + getOperand() + ", " + type + ")";
}
@Override
public boolean equals(Object obj) {
if (obj == null || !(obj instanceof WideningConversionNode)) {
return false;
}
WideningConversionNode other = (WideningConversionNode) obj;
return getOperand().equals(other.getOperand())
&& TypesUtils.areSamePrimitiveTypes(getType(), other.getType());
}
@Override
public int hashCode() {
return HashCodeUtils.hash(getOperand());
}
@Override
public Collection<Node> getOperands() {
return Collections.singletonList(getOperand());
}
}
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