| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
GHC.Core.FVs
Description
A module concerned with finding the free variables of an expression.
Synopsis
- exprFreeVars :: CoreExpr -> VarSet
- exprsFreeVars :: [CoreExpr] -> VarSet
- exprFreeVarsDSet :: CoreExpr -> DVarSet
- exprFreeVarsList :: CoreExpr -> [Var]
- exprsFreeVarsList :: [CoreExpr] -> [Var]
- exprFreeIds :: CoreExpr -> IdSet
- exprsFreeIds :: [CoreExpr] -> IdSet
- exprFreeIdsDSet :: CoreExpr -> DIdSet
- exprsFreeIdsDSet :: [CoreExpr] -> DIdSet
- exprFreeIdsList :: CoreExpr -> [Id]
- exprsFreeIdsList :: [CoreExpr] -> [Id]
- bindFreeVars :: CoreBind -> VarSet
- type InterestingVarFun = Var -> Bool
- exprSomeFreeVars :: InterestingVarFun -> CoreExpr -> VarSet
- exprsSomeFreeVars :: InterestingVarFun -> [CoreExpr] -> VarSet
- exprSomeFreeVarsList :: InterestingVarFun -> CoreExpr -> [Var]
- exprsSomeFreeVarsList :: InterestingVarFun -> [CoreExpr] -> [Var]
- varTypeTyCoVars :: Var -> TyCoVarSet
- varTypeTyCoFVs :: Var -> FV
- idUnfoldingVars :: Id -> VarSet
- idFreeVars :: Id -> VarSet
- dIdFreeVars :: Id -> DVarSet
- bndrRuleAndUnfoldingVarsDSet :: Id -> DVarSet
- bndrRuleAndUnfoldingIds :: Id -> IdSet
- idFVs :: Id -> FV
- idRuleVars :: Id -> VarSet
- stableUnfoldingVars :: Unfolding -> Maybe VarSet
- ruleFreeVars :: CoreRule -> VarSet
- rulesFreeVars :: [CoreRule] -> VarSet
- rulesFreeVarsDSet :: [CoreRule] -> DVarSet
- mkRuleInfo :: [CoreRule] -> RuleInfo
- ruleLhsFreeIds :: CoreRule -> VarSet
- ruleLhsFreeIdsList :: CoreRule -> [Var]
- ruleRhsFreeVars :: CoreRule -> VarSet
- rulesRhsFreeIds :: [CoreRule] -> VarSet
- exprFVs :: CoreExpr -> FV
- orphNamesOfType :: Type -> NameSet
- orphNamesOfCo :: Coercion -> NameSet
- orphNamesOfAxiom :: CoAxiom br -> NameSet
- orphNamesOfTypes :: [Type] -> NameSet
- orphNamesOfCoCon :: CoAxiom br -> NameSet
- exprsOrphNames :: [CoreExpr] -> NameSet
- orphNamesOfFamInst :: FamInst -> NameSet
- type FVAnn = DVarSet
- type CoreExprWithFVs = AnnExpr Id FVAnn
- type CoreExprWithFVs' = AnnExpr' Id FVAnn
- type CoreBindWithFVs = AnnBind Id FVAnn
- type CoreAltWithFVs = AnnAlt Id FVAnn
- freeVars :: CoreExpr -> CoreExprWithFVs
- freeVarsBind :: CoreBind -> DVarSet -> (CoreBindWithFVs, DVarSet)
- freeVarsOf :: CoreExprWithFVs -> DIdSet
- freeVarsOfAnn :: FVAnn -> DIdSet
Free variables of expressions and binding groups
exprFreeVars :: CoreExpr -> VarSet Source #
Find all locally-defined free Ids or type variables in an expression returning a non-deterministic set.
exprsFreeVars :: [CoreExpr] -> VarSet Source #
Find all locally-defined free Ids or type variables in several expressions returning a non-deterministic set.
exprFreeVarsDSet :: CoreExpr -> DVarSet Source #
Find all locally-defined free Ids or type variables in an expression returning a deterministic set.
exprFreeVarsList :: CoreExpr -> [Var] Source #
Find all locally-defined free Ids or type variables in an expression returning a deterministically ordered list.
exprsFreeVarsList :: [CoreExpr] -> [Var] Source #
Find all locally-defined free Ids or type variables in several expressions returning a deterministically ordered list.
exprFreeIds :: CoreExpr -> IdSet Source #
Find all locally-defined free Ids in an expression
exprsFreeIds :: [CoreExpr] -> IdSet Source #
exprFreeIdsDSet :: CoreExpr -> DIdSet Source #
Find all locally-defined free Ids in an expression returning a deterministic set.
exprsFreeIdsDSet :: [CoreExpr] -> DIdSet Source #
Find all locally-defined free Ids in several expressions returning a deterministic set.
exprFreeIdsList :: CoreExpr -> [Id] Source #
Find all locally-defined free Ids in an expression returning a deterministically ordered list.
exprsFreeIdsList :: [CoreExpr] -> [Id] Source #
Find all locally-defined free Ids in several expressions returning a deterministically ordered list.
bindFreeVars :: CoreBind -> VarSet Source #
Find all locally defined free Ids in a binding group
Selective free variables of expressions
type InterestingVarFun = Var -> Bool Source #
Predicate on possible free variables: returns True iff the variable is
interesting
Arguments
| :: InterestingVarFun | Says which |
| -> CoreExpr | |
| -> VarSet |
Finds free variables in an expression selected by a predicate
exprsSomeFreeVars :: InterestingVarFun -> [CoreExpr] -> VarSet Source #
Finds free variables in several expressions selected by a predicate
Arguments
| :: InterestingVarFun | Says which |
| -> CoreExpr | |
| -> [Var] |
Finds free variables in an expression selected by a predicate returning a deterministically ordered list.
exprsSomeFreeVarsList :: InterestingVarFun -> [CoreExpr] -> [Var] Source #
Finds free variables in several expressions selected by a predicate returning a deterministically ordered list.
Free variables of Rules, Vars and Ids
varTypeTyCoVars :: Var -> TyCoVarSet Source #
varTypeTyCoFVs :: Var -> FV Source #
idUnfoldingVars :: Id -> VarSet Source #
idFreeVars :: Id -> VarSet Source #
dIdFreeVars :: Id -> DVarSet Source #
bndrRuleAndUnfoldingIds :: Id -> IdSet Source #
idRuleVars :: Id -> VarSet Source #
ruleFreeVars :: CoreRule -> VarSet Source #
Those variables free in the both the left right hand sides of a rule returned as a non-deterministic set
rulesFreeVars :: [CoreRule] -> VarSet Source #
Those variables free in both the left right hand sides of several rules
rulesFreeVarsDSet :: [CoreRule] -> DVarSet Source #
Those variables free in the both the left right hand sides of rules returned as a deterministic set
mkRuleInfo :: [CoreRule] -> RuleInfo Source #
ruleLhsFreeIds :: CoreRule -> VarSet Source #
This finds all locally-defined free Ids on the left hand side of a rule and returns them as a non-deterministic set
ruleLhsFreeIdsList :: CoreRule -> [Var] Source #
This finds all locally-defined free Ids on the left hand side of a rule and returns them as a deterministically ordered list
ruleRhsFreeVars :: CoreRule -> VarSet Source #
Those variables free in the right hand side of a rule returned as a non-deterministic set
rulesRhsFreeIds :: [CoreRule] -> VarSet Source #
Those locally-defined free Ids in the right hand side of several rules
returned as a non-deterministic set
exprFVs :: CoreExpr -> FV Source #
Find all locally-defined free Ids or type variables in an expression returning a composable FV computation. See Note [FV naming conventions] in GHC.Utils.FV for why export it.
Orphan names
orphNamesOfType :: Type -> NameSet Source #
orphNamesOfCo :: Coercion -> NameSet Source #
orphNamesOfAxiom :: CoAxiom br -> NameSet Source #
orphNamesOfTypes :: [Type] -> NameSet Source #
orphNamesOfCoCon :: CoAxiom br -> NameSet Source #
exprsOrphNames :: [CoreExpr] -> NameSet Source #
Finds the free external names of several expressions: see exprOrphNames for details
orphNamesOfFamInst :: FamInst -> NameSet Source #
orphNamesOfAxiom collects the names of the concrete types and type constructors that make up the LHS of a type family instance, including the family name itself.
For instance, given `type family Foo a b`: `type instance Foo (F (G (H a))) b = ...` would yield [Foo,F,G,H]
Used in the implementation of ":info" in GHCi.
Core syntax tree annotation with free variables
type CoreExprWithFVs = AnnExpr Id FVAnn Source #
Every node in an expression annotated with its (non-global) free variables, both Ids and TyVars, and type. NB: see Note [The FVAnn invariant]
type CoreBindWithFVs = AnnBind Id FVAnn Source #
Every node in a binding group annotated with its (non-global) free variables, both Ids and TyVars, and type.
type CoreAltWithFVs = AnnAlt Id FVAnn Source #
Every node in an expression annotated with its (non-global) free variables, both Ids and TyVars, and type.
freeVars :: CoreExpr -> CoreExprWithFVs Source #
Annotate a CoreExpr with its (non-global) free type
and value variables at every tree node.
freeVarsBind :: CoreBind -> DVarSet -> (CoreBindWithFVs, DVarSet) Source #
freeVarsOf :: CoreExprWithFVs -> DIdSet Source #
Inverse function to freeVars
freeVarsOfAnn :: FVAnn -> DIdSet Source #
Extract the vars reported in a FVAnn