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efd5c571bf
* .forbids pragma: defining illegal effects for proc types This patch intends to define the opposite of the .tags pragma: a way to define effects which are not allowed in a proc. * updated documentation and changelogs for the forbids pragma * renamed notTagEffects to forbiddenEffects * corrected issues of forbids pragma the forbids pragma didn't handle simple restrictions properly and it also had issues with subtyping * removed incorrect character from changelog * added test to cover the interaction of methods and the forbids pragma * covering the interaction of the tags and forbids pragmas * updated manual about the forbids pragma * removed useless statement * corrected the subtyping of proc types using the forbids pragma * updated manual for the forbids pragma * updated documentations for forbids pragma * updated nim docs * updated docs with rsttester.nim * regenerated documentation * updated rst docs * Update changelog.md Co-authored-by: ringabout <43030857+ringabout@users.noreply.github.com> * updated changelog * corrected typo Co-authored-by: ringabout <43030857+ringabout@users.noreply.github.com>
53 lines
1.5 KiB
Nim
53 lines
1.5 KiB
Nim
discard """
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action: compile
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"""
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import std/locks
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type
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Test2Effect* = object
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Test2* = object
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value2*: int
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Test1Effect* = object
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Test1* = object
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value1*: int
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Main* = object
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test1Lock: Lock
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test1: Test1
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test2Lock: Lock
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test2: Test2
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proc `=copy`(obj1: var Test2, obj2: Test2) {.error.}
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proc `=copy`(obj1: var Test1, obj2: Test1) {.error.}
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proc `=copy`(obj1: var Main, obj2: Main) {.error.}
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proc withTest1(main: var Main,
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fn: proc(test1: var Test1) {.gcsafe, forbids: [Test1Effect].}) {.gcsafe, tags: [Test1Effect, RootEffect].} =
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withLock(main.test1Lock):
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fn(main.test1)
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proc withTest2(main: var Main,
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fn: proc(test1: var Test2) {.gcsafe, forbids: [Test2Effect].}) {.gcsafe, tags: [Test2Effect, RootEffect].} =
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withLock(main.test2Lock):
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fn(main.test2)
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proc newMain(): Main =
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var test1lock: Lock
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initLock(test1Lock)
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var test2lock: Lock
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initLock(test2Lock)
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var main = Main(test1Lock: move(test1Lock), test1: Test1(value1: 1),
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test2Lock: move(test2Lock), test2: Test2(value2: 2))
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main.withTest1(proc(test1: var Test1) = test1.value1 += 1)
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main.withTest2(proc(test2: var Test2) = test2.value2 += 1)
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move main
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var main = newMain()
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main.withTest1(proc(test1: var Test1) =
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test1.value1 += 1
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main.withTest2(proc(test2: var Test2) = test2.value2 += 1)
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)
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main.withTest1(proc(test1: var Test1) {.tags: [].} = echo $test1.value1)
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main.withTest2(proc(test2: var Test2) {.tags: [].} = echo $test2.value2)
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