68 lines
2 KiB
Nim
68 lines
2 KiB
Nim
#
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#
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# Nim's Runtime Library
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# (c) Copyright 2015 Andreas Rumpf
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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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# Pragmas for RTL generation. Has to be an include, because user-defined
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# pragmas cannot be exported.
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# There are 3 different usages:
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# 1) Ordinary imported code.
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# 2) Imported from nimrtl.
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# -> defined(useNimRtl) or appType == "lib" and not defined(createNimRtl)
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# 3) Exported into nimrtl.
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# -> appType == "lib" and defined(createNimRtl)
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when not defined(nimNewShared):
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{.pragma: gcsafe.}
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when defined(createNimRtl):
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when defined(useNimRtl):
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{.error: "Cannot create and use nimrtl at the same time!".}
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elif appType != "lib":
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{.error: "nimrtl must be built as a library!".}
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when defined(createNimRtl):
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{.pragma: rtl, exportc: "nimrtl_$1", dynlib, gcsafe.}
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{.pragma: inl.}
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{.pragma: compilerRtl, compilerproc, exportc: "nimrtl_$1", dynlib.}
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elif defined(useNimRtl):
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when defined(windows):
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const nimrtl* = "nimrtl.dll"
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elif defined(macosx):
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const nimrtl* = "libnimrtl.dylib"
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else:
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const nimrtl* = "libnimrtl.so"
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{.pragma: rtl, importc: "nimrtl_$1", dynlib: nimrtl, gcsafe.}
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{.pragma: inl.}
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{.pragma: compilerRtl, compilerproc, importc: "nimrtl_$1", dynlib: nimrtl.}
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else:
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{.pragma: rtl, gcsafe.}
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{.pragma: inl, inline.}
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{.pragma: compilerRtl, compilerproc.}
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when defined(nimlocks):
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{.pragma: benign, gcsafe, locks: 0.}
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else:
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{.pragma: benign, gcsafe.}
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template isSince(version: (int, int)): bool =
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(NimMajor, NimMinor) >= version
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template isSince(version: (int, int, int)): bool =
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(NimMajor, NimMinor, NimPatch) >= version
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template since(version, body: untyped) {.dirty, used.} =
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## Usage:
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##
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## .. code-block:: Nim
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## proc fun*() {since: (1, 3).}
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## proc fun*() {since: (1, 3, 1).}
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##
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## Limitation: can't be used to annotate a template (eg typetraits.get), would
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## error: cannot attach a custom pragma.
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# `dirty` needed because `NimMajor` may not yet be defined in caller.
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when isSince(version):
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body
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