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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 com.sun.source.tree.LiteralTree;
import com.sun.source.tree.Tree;
import org.checkerframework.checker.nullness.qual.Nullable;
import org.checkerframework.dataflow.qual.SideEffectFree;
import java.util.Collection;
import java.util.Collections;
/**
* A node for an integer literal. For example:
*
*
* 42
*
*/
public class IntegerLiteralNode extends ValueLiteralNode {
/**
* Create a new IntegerLiteralNode.
*
* @param t the tree for the literal value
*/
public IntegerLiteralNode(LiteralTree t) {
super(t);
assert t.getKind() == Tree.Kind.INT_LITERAL;
}
@Override
public Integer getValue() {
return (Integer) tree.getValue();
}
@Override
public R accept(NodeVisitor visitor, P p) {
return visitor.visitIntegerLiteral(this, p);
}
@Override
public boolean equals(@Nullable Object obj) {
// test that obj is a IntegerLiteralNode
if (!(obj instanceof IntegerLiteralNode)) {
return false;
}
// super method compares values
return super.equals(obj);
}
@Override
@SideEffectFree
public Collection getOperands() {
return Collections.emptyList();
}
}
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