| 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 narrowing primitive conversion operation. See JLS 5.1.3 for the definition of |
| * narrowing primitive conversion. |
| * |
| * <p>A {@link NarrowingConversionNode} 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 NarrowingConversionNode extends Node { |
| |
| protected Tree tree; |
| protected Node operand; |
| |
| public NarrowingConversionNode(Tree tree, Node operand, TypeMirror type) { |
| super(type); |
| assert TypesUtils.isPrimitive(type) : "non-primitive type in narrowing 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.visitNarrowingConversion(this, p); |
| } |
| |
| @Override |
| public String toString() { |
| return "NarrowingConversion(" + getOperand() + ", " + type + ")"; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj == null || !(obj instanceof NarrowingConversionNode)) { |
| return false; |
| } |
| NarrowingConversionNode other = (NarrowingConversionNode) 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()); |
| } |
| } |