# Package com.oracle.truffle.api.utilities

Class Summary
Class | Description
--- | ---
AlwaysValidAssumption | An assumption that is always valid.
AssumedValue<T> | A value that the compiler can assume is constant, but can be changed by invalidation.
BinaryConditionProfile | Utility class to speculate on conditions to be never true or to be never false.
BranchProfile | Utility class to speculate on branches to be never visited.
ConditionProfile | Abstract utility class to speculate on conditions.
CountingConditionProfile | Utility class to speculate on conditions to be never true or to be never false.
CyclicAssumption | Holds an `Assumption`, and knows how to recreate it with the same properties on invalidation.
ExactClassValueProfile | Represents a `ValueProfile` that speculates on the exact class of a value.
IdentityValueProfile | Represents a `ValueProfile` that speculates on the object identity of a value.
JSONHelper | Helper function that allows to dump the AST during creation to a JSON format.
JSONHelper.JSONArrayBuilder |
JSONHelper.JSONObjectBuilder |
JSONHelper.JSONStringBuilder |
NeverValidAssumption | An assumption that is never valid.
PrimitiveValueProfile | Represents a `ValueProfile` that speculates on the primitive equality or object identity of values.
UnionAssumption | An assumption that combines two other assumptions.
ValueProfile | Utility class to speculate on certain properties of values.