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add expectIdent to macros (#12778)

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* add expectIdent to macros

* apply feedback

* Update lib/core/macros.nim

Co-Authored-By: Clyybber <darkmine956@gmail.com>

* Update texpectIdent2.nim

* Update texpectIdent1.nim

Co-authored-by: Clyybber <darkmine956@gmail.com>
Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
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Arne Döring 2020-03-11 08:27:31 +01:00 • committed by GitHub
commit f95eef99a9
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7
lib/core/macros.nim
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@ -1433,6 +1433,13 @@ else:
else:
result = false
proc expectIdent*(n: NimNode, name: string) {.compileTime, since: (1,1).} =
## Check that ``eqIdent(n,name)`` holds true. If this is not the
## case, compilation aborts with an error message. This is useful
## for writing macros that check the AST that is passed to them.
if not eqIdent(n, name):
error("Expected identifier to be `" & name & "` here", n)
proc hasArgOfName*(params: NimNode; name: string): bool {.compileTime.}=
## Search ``nnkFormalParams`` for an argument.
expectKind(params, nnkFormalParams)