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Diffstat (limited to 'third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/analysis/AbstractValue.java')
| -rw-r--r-- | third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/analysis/AbstractValue.java | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/analysis/AbstractValue.java b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/analysis/AbstractValue.java new file mode 100644 index 0000000000..2dbcbd4b03 --- /dev/null +++ b/third_party/checker_framework_dataflow/java/org/checkerframework/dataflow/analysis/AbstractValue.java @@ -0,0 +1,27 @@ +package org.checkerframework.dataflow.analysis; + +/** + * An abstract value used in the org.checkerframework.dataflow analysis. + * + * @author Stefan Heule + * + */ +public interface AbstractValue<V extends AbstractValue<V>> { + + /** + * Compute the least upper bound of two stores. + * + * <p> + * + * <em>Important</em>: This method must fulfill the following contract: + * <ul> + * <li>Does not change {@code this}.</li> + * <li>Does not change {@code other}.</li> + * <li>Returns a fresh object which is not aliased yet.</li> + * <li>Returns an object of the same (dynamic) type as {@code this}, even if + * the signature is more permissive.</li> + * <li>Is commutative.</li> + * </ul> + */ + V leastUpperBound(V other); +} |