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Refactor out common part of evalPatAndRhs and evalPatBind.

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This commit is contained in:
Robbie Gleichman 2016-12-30 02:15:43 -08:00
parent c95abcdc1f
commit a63ab098b5
1 changed files with 19 additions and 19 deletions
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38
app/Translate.hs
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@ -61,6 +61,15 @@ makeAsBindGraph ref asNames = bindsToSyntaxGraph $ catMaybes $ fmap makeBind asN
grNamePortToGrRef :: (SyntaxGraph, NameAndPort) -> GraphAndRef
grNamePortToGrRef (graph, np) = GraphAndRef graph (Right np)
bindOrAltHelper ::
EvalContext -> Pat -> Rhs -> Maybe Binds -> State IDState ((GraphAndRef, Maybe String), GraphAndRef)
bindOrAltHelper c pat rhs maybeWhereBinds = do
patGraphAndRef <- evalPattern pat
let
rhsContext = namesInPattern patGraphAndRef <> c
rhsGraphAndRef <- rhsWithBinds maybeWhereBinds rhs rhsContext
pure (patGraphAndRef, rhsGraphAndRef)
-- END Helper Functions --
-- BEGIN Names helper functions --
@ -383,14 +392,14 @@ evalApp c f e = if appScore <= compScore
-- END evaluateAppExpression
evalIf :: EvalContext -> Exp -> Exp -> Exp -> State IDState (SyntaxGraph, NameAndPort)
evalIf c e1 e2 e3 = makeGuardGraph 2
evalIf c boolExp trueExp falseExp = makeGuardGraph 2
<$>
getUniqueName
<*>
-- Use (pure <$>) to put the evaluated expression in a single item list
(pure <$> evalExp c e1)
(pure <$> evalExp c boolExp)
<*>
mapM (evalExp c) [e2, e3]
mapM (evalExp c) [trueExp, falseExp]
-- BEGIN evalGeneralLet
@ -402,7 +411,6 @@ getBoundVarName (FunBind (Match _ name _ _ _ _:_)) = [nameToString name]
getBoundVarName (TypeSig _ _ _) = []
getBoundVarName decl = error $ "getBoundVarName: No pattern in case for " ++ show decl
--TODO: Should this call makeEdges?
evalBinds :: EvalContext -> Binds -> State IDState (SyntaxGraph, EvalContext)
evalBinds c (BDecls decls) = do
let
@ -435,10 +443,7 @@ evalStmts :: EvalContext -> [Stmt] -> State IDState GraphAndRef
evalStmts c [stmt] = evalStmt c stmt
evalGuardedRhs :: EvalContext -> GuardedRhs -> State IDState (GraphAndRef, GraphAndRef)
evalGuardedRhs c (GuardedRhs _ stmts e) = do
expVal <- evalExp c e
stmtsVal <- evalStmts c stmts
pure (stmtsVal, expVal)
evalGuardedRhs c (GuardedRhs _ stmts e) = (,) <$> evalStmts c stmts <*> evalExp c e
evalGuardedRhss :: EvalContext -> [GuardedRhs] -> State IDState (SyntaxGraph, NameAndPort)
evalGuardedRhss c rhss = let
@ -467,13 +472,11 @@ rhsWithBinds maybeWhereBinds rhs rhsContext = case maybeWhereBinds of
-- BEGIN evalCase
-- TODO: Refactor this with evalPatBind
-- TODO patRhsAreConnected is sometimes incorrectly true if the pat is just a name
evalPatAndRhs :: EvalContext -> Pat -> Rhs -> Maybe Binds -> State IDState (Bool, SyntaxGraph, Reference, Reference, Maybe String)
evalPatAndRhs c pat rhs maybeWhereBinds = do
patternNames <- namesInPattern <$> evalPattern pat
let rhsContext = patternNames <> c
GraphAndRef rhsGraph rhsRef <- rhsWithBinds maybeWhereBinds rhs rhsContext
(GraphAndRef patGraph patRef, mPatAsName) <- evalPattern pat
((GraphAndRef patGraph patRef, mPatAsName), GraphAndRef rhsGraph rhsRef) <-
bindOrAltHelper c pat rhs maybeWhereBinds
let
grWithEdges = makeEdges (rhsGraph <> patGraph)
lookedUpRhsRef = lookupReference (sgBinds grWithEdges) rhsRef
@ -688,18 +691,15 @@ evalMatches c (firstMatch:restOfMatches) = matchesToCase firstMatch restOfMatche
evalPatBind :: EvalContext -> Decl -> State IDState SyntaxGraph
evalPatBind c (PatBind _ pat rhs maybeWhereBinds) = do
patternNames <- namesInPattern <$> evalPattern pat
let rhsContext = patternNames <> c
GraphAndRef rhsGraph rhsRef <- rhsWithBinds maybeWhereBinds rhs rhsContext
(GraphAndRef patGraph patRef, patAsName) <- evalPattern pat
((GraphAndRef patGraph patRef, mPatAsName), GraphAndRef rhsGraph rhsRef) <-
bindOrAltHelper c pat rhs maybeWhereBinds
let
(newEdges, newSinks, bindings) = case patRef of
(Left s) -> (mempty, mempty, [SgBind s rhsRef])
(Right patPort) -> case rhsRef of
-- TODO This edge/sink should have a special arrow head to indicate an input to a pattern.
(Left rhsStr) -> (mempty, [SgSink rhsStr patPort], mempty)
(Right rhsPort) -> ([makeSimpleEdge (rhsPort, patPort)], mempty, mempty)
asBindGraph = makeAsBindGraph rhsRef [patAsName]
asBindGraph = makeAsBindGraph rhsRef [mPatAsName]
gr = asBindGraph <> SyntaxGraph mempty newEdges newSinks bindings mempty
pure . makeEdges $ (gr <> rhsGraph <> patGraph)