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| author | Timothee Cour <timothee.cour2@gmail.com> | 2019-12-23 09:42:32 +0100 |
|---|---|---|
| committer | Andreas Rumpf <rumpf_a@web.de> | 2019-12-23 09:42:32 +0100 |
| commit | a0980c88c934dcbefb17099ca68f0d775aef44cd (patch) | |
| tree | 61ba3b50ca28554650e93209e9f320a7c969f76d /lib | |
| parent | 2e7c9eb6a8dea7e4ca6b268020058b46f6b16580 (diff) | |
| download | Nim-a0980c88c934dcbefb17099ca68f0d775aef44cd.tar.gz | |
lenVarargs: number of varargs elements (#12907)
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/system.nim | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/system.nim b/lib/system.nim index 05029b9d7..a1f94218e 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -4198,6 +4198,11 @@ type NimNode* {.magic: "PNimrodNode".} = ref NimNodeObj ## Represents a Nim AST node. Macros operate on this type. +macro lenVarargs*(x: varargs[untyped]): int {.since: (1, 1).} = + ## returns number of variadic arguments in `x` + proc lenVarargsImpl(x: NimNode): NimNode {.magic: "LengthOpenArray", noSideEffect.} + lenVarargsImpl(x) + when false: template eval*(blk: typed): typed = ## Executes a block of code at compile time just as if it was a macro. |