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92163fa330
* implements https://github.com/nim-lang/RFCs/issues/258 * don't be too strict with custom pragma blocks * cast pragmas: documentation * added most missing inference query procs to effecttraits.nim
55 lines
2.1 KiB
Nim
55 lines
2.1 KiB
Nim
#
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#
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# Nim's Runtime Library
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# (c) Copyright 2020 Nim contributors
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## This module provides access to the inferred .raises effects
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## for Nim's macro system.
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## **Since**: Version 1.4.
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##
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## One can test for the existance of this standard module
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## via ``defined(nimHasEffectTraitsModule)``.
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import macros
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proc getRaisesListImpl(n: NimNode): NimNode = discard "see compiler/vmops.nim"
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proc getTagsListImpl(n: NimNode): NimNode = discard "see compiler/vmops.nim"
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proc isGcSafeImpl(n: NimNode): bool = discard "see compiler/vmops.nim"
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proc hasNoSideEffectsImpl(n: NimNode): bool = discard "see compiler/vmops.nim"
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proc getRaisesList*(fn: NimNode): NimNode =
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## Extracts the ``.raises`` list of the func/proc/etc ``fn``.
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## ``fn`` has to be a resolved symbol of kind ``nnkSym``. This
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## implies that the macro that calls this proc should accept ``typed``
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## arguments and not ``untyped`` arguments.
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expectKind fn, nnkSym
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result = getRaisesListImpl(fn)
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proc getTagsList*(fn: NimNode): NimNode =
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## Extracts the ``.tags`` list of the func/proc/etc ``fn``.
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## ``fn`` has to be a resolved symbol of kind ``nnkSym``. This
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## implies that the macro that calls this proc should accept ``typed``
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## arguments and not ``untyped`` arguments.
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expectKind fn, nnkSym
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result = getTagsListImpl(fn)
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proc isGcSafe*(fn: NimNode): bool =
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## Return true if the func/proc/etc ``fn`` is `gcsafe`.
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## ``fn`` has to be a resolved symbol of kind ``nnkSym``. This
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## implies that the macro that calls this proc should accept ``typed``
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## arguments and not ``untyped`` arguments.
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expectKind fn, nnkSym
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result = isGcSafeImpl(fn)
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proc hasNoSideEffects*(fn: NimNode): bool =
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## Return true if the func/proc/etc ``fn`` has `noSideEffect`.
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## ``fn`` has to be a resolved symbol of kind ``nnkSym``. This
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## implies that the macro that calls this proc should accept ``typed``
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## arguments and not ``untyped`` arguments.
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expectKind fn, nnkSym
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result = hasNoSideEffectsImpl(fn)
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