Required value analysis for Curry programs
This analysis checks for each function in a Curry program whether
the arguments of a function must have a particular shape in order to
compute some value of this function.
For instance, the negation operation not
requires the argument
value False
in order to compute the result True
and it requires
the argument True
to compute the result False.
Author: Michael Hanus
Version: April 2016
lubAType
:: AType -> AType -> AType
Least upper bound of abstract values. |
showAType
:: AOutFormat -> AType -> String
|
showAFType
:: AOutFormat -> AFType -> String
|
reqValueAnalysis
:: Analysis AFType
Required value analysis. |
Constructors:
Cons
:: [QName] -> AType
AnyC
:: AType
Any
:: AType
The abstract type of a function.
It is either EmptyFunc, i.e., contains no information about
the possible result of the function,
or a list of possible argument/result type pairs.
Constructors:
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Required value analysis. |