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New version of js console using macros - avoid the use of .apply method

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This commit is contained in:
Andrea Ferretti 2016-10-06 11:35:29 +02:00
commit f0308e9bcf
1 changed files with 22 additions and 4 deletions
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26
lib/js/jsconsole.nim
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@ -13,14 +13,32 @@
when not defined(js) and not defined(Nimdoc): when not defined(js) and not defined(Nimdoc):
{.error: "This module only works on the JavaScript platform".} {.error: "This module only works on the JavaScript platform".}
import macros
type Console* {.importc.} = ref object of RootObj type Console* {.importc.} = ref object of RootObj
proc convertToConsoleLoggable*[T](v: T): RootRef {.importcpp: "#".} proc convertToConsoleLoggable*[T](v: T): RootRef {.importcpp: "#".}
template convertToConsoleLoggable*(v: string): RootRef = cast[RootRef](cstring(v)) template convertToConsoleLoggable*(v: string): RootRef = cast[RootRef](cstring(v))
proc log*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]) {.importcpp: "#.log.apply(null, #)".} proc logImpl(console: Console) {.importcpp: "log", varargs.}
proc debug*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]) {.importcpp: "#.debug.apply(null, #)".} proc debugImpl(console: Console) {.importcpp: "debug", varargs.}
proc info*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]) {.importcpp: "#.info.apply(null, #)".} proc infoImpl(console: Console) {.importcpp: "info", varargs.}
proc error*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]) {.importcpp: "#.error.apply(null, #)".} proc errorImpl(console: Console) {.importcpp: "error", varargs.}
proc makeConsoleCall(console: NimNode, procName: NimNode, args: NimNode): NimNode =
result = newCall(procName, console)
for c in args: result.add(c)
macro log*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]): untyped =
makeConsoleCall(console, bindSym "logImpl", args)
macro debug*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]): untyped =
makeConsoleCall(console, bindSym "debugImpl", args)
macro info*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]): untyped =
makeConsoleCall(console, bindSym "infoImpl", args)
macro error*(console: Console, args: varargs[RootRef, convertToConsoleLoggable]): untyped =
makeConsoleCall(console, bindSym "errorImpl", args)
var console* {.importc, nodecl.}: Console var console* {.importc, nodecl.}: Console