Safe Haskell | Safe-Inferred |
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Utilities for constructing and destructing compound expressions.

- bindsOfLets :: Lets a n -> [Bind n]
- specBindsOfLets :: Lets a n -> [Bind n]
- valwitBindsOfLets :: Lets a n -> [Bind n]
- bindsOfPat :: Pat n -> [Bind n]
- makeXLAMs :: a -> [Bind n] -> Exp a n -> Exp a n
- takeXLAMs :: Exp a n -> Maybe ([Bind n], Exp a n)
- makeXLams :: a -> [Bind n] -> Exp a n -> Exp a n
- takeXLams :: Exp a n -> Maybe ([Bind n], Exp a n)
- takeXLamFlags :: Exp a n -> Maybe ([(Bool, Bind n)], Exp a n)
- makeXLamFlags :: a -> [(Bool, Bind n)] -> Exp a n -> Exp a n
- makeXApps :: a -> Exp a n -> [Exp a n] -> Exp a n
- takeXApps :: Exp a n -> [Exp a n]
- takeXConApps :: Exp a n -> Maybe (Bound n, [Exp a n])
- takeXPrimApps :: Exp a n -> Maybe (n, [Exp a n])
- takeCtorNameOfAlt :: Alt a n -> Maybe n

# Lets

bindsOfLets :: Lets a n -> [Bind n]Source

Take the binds of a `Lets`

.

specBindsOfLets :: Lets a n -> [Bind n]Source

Like `bindsOfLets`

but only take the type binders.

valwitBindsOfLets :: Lets a n -> [Bind n]Source

Like `bindsOfLets`

but only take the value and witness binders.

# Patterns

bindsOfPat :: Pat n -> [Bind n]Source

Take the binds of a `Pat`

.

# Lambdas

takeXLAMs :: Exp a n -> Maybe ([Bind n], Exp a n)Source

Split nested value and witness lambdas from the front of an expression,
or `Nothing`

if there aren't any.

makeXLams :: a -> [Bind n] -> Exp a n -> Exp a nSource

Make some nested value or witness lambda abstractions.

takeXLams :: Exp a n -> Maybe ([Bind n], Exp a n)Source

Split nested value or witness lambdas from the front of an expression,
or `Nothing`

if there aren't any.

takeXLamFlags :: Exp a n -> Maybe ([(Bool, Bind n)], Exp a n)Source

Split nested lambdas from the front of an expression, with a flag indicating whether the lambda was a level-1 (True), or level-0 (False) binder.

makeXLamFlags :: a -> [(Bool, Bind n)] -> Exp a n -> Exp a nSource

Make some nested lambda abstractions, using a flag to indicate whether the lambda is a level-1 (True), or level-0 (False) binder.

# Applications

takeXApps :: Exp a n -> [Exp a n]Source

Flatten an application into the function parts and arguments, if any.

takeXConApps :: Exp a n -> Maybe (Bound n, [Exp a n])Source

Flatten an application of a data constructor into the constructor and its arguments.

Returns `Nothing`

if the expression isn't a constructor application.

takeXPrimApps :: Exp a n -> Maybe (n, [Exp a n])Source

Flatten an application of a primop into the variable and its arguments.

Returns `Nothing`

if the expression isn't a primop application.

# Alternatives

takeCtorNameOfAlt :: Alt a n -> Maybe nSource

Take the constructor name of an alternative, if there is one.