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fixes #4915

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This commit is contained in:
andri lim 2016-10-27 12:22:12 +07:00
commit bd560d6a4e
4 changed files with 15 additions and 9 deletions
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8
lib/core/macros.nim
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@ -235,7 +235,7 @@ proc getImpl*(s: NimSym): NimNode {.magic: "GetImpl", noSideEffect.} =
## const.
discard
proc error*(msg: string) {.magic: "NError", benign.}
proc error*(msg: string, n: NimNode = nil) {.magic: "NError", benign.}
## writes an error message at compile time
proc warning*(msg: string) {.magic: "NWarning", benign.}
@ -377,19 +377,19 @@ proc expectKind*(n: NimNode, k: NimNodeKind) {.compileTime.} =
## checks that `n` is of kind `k`. 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 n.kind != k: error("Expected a node of kind " & $k & ", got " & $n.kind)
if n.kind != k: error("Expected a node of kind " & $k & ", got " & $n.kind, n)
proc expectMinLen*(n: NimNode, min: int) {.compileTime.} =
## checks that `n` has at least `min` children. If this is not the case,
## compilation aborts with an error message. This is useful for writing
## macros that check its number of arguments.
if n.len < min: error("macro expects a node with " & $min & " children")
if n.len < min: error("macro expects a node with " & $min & " children", n)
proc expectLen*(n: NimNode, len: int) {.compileTime.} =
## checks that `n` has exactly `len` children. If this is not the case,
## compilation aborts with an error message. This is useful for writing
## macros that check its number of arguments.
if n.len != len: error("macro expects a node with " & $len & " children")
if n.len != len: error("macro expects a node with " & $len & " children", n)
proc newTree*(kind: NimNodeKind,
children: varargs[NimNode]): NimNode {.compileTime.} =