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Library
Module
Module type
Parameter
Class
Class type
DataFlow performs a forward data flow analysis over a directed graph.
Run requires a type variable that is equipped with an implementation of imperative maps, a type property that is equipped with leq and join functions, and a data flow graph whose edges describe the propagation of properties. It performs a forward data flow analysis and returns its result.
The function solution has type variable -> property option. A reachable variable is mapped to Some _; an unreachable one is mapped to None.
moduleRun (M : sig ... end) (P : sig ... end) (G : sig ... end) : sig ... end
ForOrderedType is a special case of Run where it suffices to pass an ordered type T as an argument. A reference to a persistent map is used to hold the memoization table.
ForType is a special case of Run where it suffices to pass an arbitrary type T as an argument. A hash table is used to hold the memoization table. OCaml's built-in generic equality and hash functions are used.
moduleForType
(T : sig ... end)
(P : sig ... end)
(G : sig ... end) :
sig ... end
ForIntSegment is a special case of Run where the type of variables is the integer segment [0..n). An array is used to hold the table.
moduleForIntSegment
(K : sig ... end)
(P : sig ... end)
(G : sig ... end) :
sig ... end
ForCustomMaps is a forward data flow analysis that is tuned for greater performance. It internally relies on CompactQueue, instead of Queue. Furthermore, instead of relying on a full-fledged implementation of maps as described by MINIMAL_IMPERATIVE_MAPS, it expects the user to create and initialize two maps V and B that satisfy the signature ARRAY. This typically allows the user to choose an efficient, specialized data representation.
The map V must be initialized with bottom everywhere. The map B must be initialized with false everywhere.
The functor returns nothing: the map V is modified in place and can be read by the user after the fixed point has been reached.
moduleForCustomMaps
(P : sig ... end)
(G : sig ... end)
(V : sig ... end)
(B : sig ... end) :
sig ... end