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definition:
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evalExternal :: Graph -> String -> [NodeID] -> Node
evalExternal gr ename ns = case unQName ename of
"apply" -> addPartialArg (lookupNode (ns!!0) gr) (ns!!1)
"$!" -> FuncNode "apply" ns
"$#" -> FuncNode "apply" ns
"prim_Int_plus" ->
ConsNode (show (lookupIntNode (ns!!0) gr + lookupIntNode (ns!!1) gr)) []
"prim_Int_mult" ->
ConsNode (show (lookupIntNode (ns!!0) gr * lookupIntNode (ns!!1) gr)) []
_ -> error $ "step: unknown external function: " ++ ename
where
unQName s = let (mn,ufn) = break (=='.') s
in if null ufn then mn else unQName (tail ufn)
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demand:
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no demanded arguments
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deterministic:
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deterministic operation
|
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documentation:
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-- Evaluates an external function to a node containing the evaluated value.
-- The arguments are the current graph, the external name,
-- and the argument nodes.
|
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failfree:
|
<FAILING>
|
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indeterministic:
|
referentially transparent operation
|
|
infix:
|
no fixity defined
|
|
iotype:
|
{(_,_,_) |-> _}
|
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name:
|
evalExternal
|
|
precedence:
|
no precedence defined
|
|
result-values:
|
_
|
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signature:
|
ICurry.Graph.Graph -> String -> [Prelude.Int] -> ICurry.Graph.Node
|
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solution-complete:
|
operation might suspend on free variables
|
|
terminating:
|
possibly non-terminating
|
|
totally-defined:
|
possibly non-reducible on same data term
|