mirrors/Nim
1
0
Fork 0
mirror of https://github.com/nim-lang/Nim.git synced 2026-02-13 06:43:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

std/options enables stricteffects (#19441)

Browse Source
This commit is contained in:
ringabout
2022-08-25 15:21:46 +08:00
committed by GitHub
parent 404e91ce48
commit 16f6dc05fd
1 changed files with 8 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/pure/options.nim
View File

@@ -68,6 +68,10 @@ supports pattern matching on `Option`s, with the `Some(<pattern>)` and
]##
# xxx pending https://github.com/timotheecour/Nim/issues/376 use `runnableExamples` and `whichModule`
when defined(nimHasEffectsOf):
{.experimental: "strictEffects".}
else:
{.pragma: effectsOf.}
import typetraits
@@ -226,7 +230,7 @@ proc get*[T](self: var Option[T]): var T {.inline.} =
raise newException(UnpackDefect, "Can't obtain a value from a `none`")
return self.val
proc map*[T](self: Option[T], callback: proc (input: T)) {.inline.} =
proc map*[T](self: Option[T], callback: proc (input: T)) {.inline, effectsOf: callback.} =
## Applies a `callback` function to the value of the `Option`, if it has one.
##
## **See also:**
@@ -245,7 +249,7 @@ proc map*[T](self: Option[T], callback: proc (input: T)) {.inline.} =
if self.isSome:
callback(self.val)
proc map*[T, R](self: Option[T], callback: proc (input: T): R): Option[R] {.inline.} =
proc map*[T, R](self: Option[T], callback: proc (input: T): R): Option[R] {.inline, effectsOf: callback.} =
## Applies a `callback` function to the value of the `Option` and returns an
## `Option` containing the new value.
##
@@ -282,7 +286,7 @@ proc flatten*[T](self: Option[Option[T]]): Option[T] {.inline.} =
none(T)
proc flatMap*[T, R](self: Option[T],
callback: proc (input: T): Option[R]): Option[R] {.inline.} =
callback: proc (input: T): Option[R]): Option[R] {.inline, effectsOf: callback.} =
## Applies a `callback` function to the value of the `Option` and returns the new value.
##
## If the `Option` has no value, `none(R)` will be returned.
@@ -307,7 +311,7 @@ proc flatMap*[T, R](self: Option[T],
map(self, callback).flatten()
proc filter*[T](self: Option[T], callback: proc (input: T): bool): Option[T] {.inline.} =
proc filter*[T](self: Option[T], callback: proc (input: T): bool): Option[T] {.inline, effectsOf: callback.} =
## Applies a `callback` to the value of the `Option`.
##
## If the `callback` returns `true`, the option is returned as `some`.