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ref #16054 undefine some stuff in JS backend (#16070)

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flywind 2020-11-26 18:08:53 +08:00 • committed by GitHub
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lib/system.nim
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@ -1897,53 +1897,54 @@ else:
# however, stack-traces are available for most parts # however, stack-traces are available for most parts
# of the code # of the code
var when notJSnotNims:
globalRaiseHook*: proc (e: ref Exception): bool {.nimcall, benign.} var
## With this hook you can influence exception handling on a global level. globalRaiseHook*: proc (e: ref Exception): bool {.nimcall, benign.}
## If not nil, every 'raise' statement ends up calling this hook. ## With this hook you can influence exception handling on a global level.
## ## If not nil, every 'raise' statement ends up calling this hook.
## **Warning**: Ordinary application code should never set this hook! ##
## You better know what you do when setting this. ## **Warning**: Ordinary application code should never set this hook!
## ## You better know what you do when setting this.
## If ``globalRaiseHook`` returns false, the exception is caught and does ##
## not propagate further through the call stack. ## If ``globalRaiseHook`` returns false, the exception is caught and does
## not propagate further through the call stack.
localRaiseHook* {.threadvar.}: proc (e: ref Exception): bool {.nimcall, benign.} localRaiseHook* {.threadvar.}: proc (e: ref Exception): bool {.nimcall, benign.}
## With this hook you can influence exception handling on a ## With this hook you can influence exception handling on a
## thread local level. ## thread local level.
## If not nil, every 'raise' statement ends up calling this hook. ## If not nil, every 'raise' statement ends up calling this hook.
## ##
## **Warning**: Ordinary application code should never set this hook! ## **Warning**: Ordinary application code should never set this hook!
## You better know what you do when setting this. ## You better know what you do when setting this.
## ##
## If ``localRaiseHook`` returns false, the exception ## If ``localRaiseHook`` returns false, the exception
## is caught and does not propagate further through the call stack. ## is caught and does not propagate further through the call stack.
outOfMemHook*: proc () {.nimcall, tags: [], benign, raises: [].} outOfMemHook*: proc () {.nimcall, tags: [], benign, raises: [].}
## Set this variable to provide a procedure that should be called ## Set this variable to provide a procedure that should be called
## in case of an `out of memory`:idx: event. The standard handler ## in case of an `out of memory`:idx: event. The standard handler
## writes an error message and terminates the program. ## writes an error message and terminates the program.
## ##
## `outOfMemHook` can be used to raise an exception in case of OOM like so: ## `outOfMemHook` can be used to raise an exception in case of OOM like so:
## ##
## .. code-block:: Nim ## .. code-block:: Nim
## ##
## var gOutOfMem: ref EOutOfMemory ## var gOutOfMem: ref EOutOfMemory
## new(gOutOfMem) # need to be allocated *before* OOM really happened! ## new(gOutOfMem) # need to be allocated *before* OOM really happened!
## gOutOfMem.msg = "out of memory" ## gOutOfMem.msg = "out of memory"
## ##
## proc handleOOM() = ## proc handleOOM() =
## raise gOutOfMem ## raise gOutOfMem
## ##
## system.outOfMemHook = handleOOM ## system.outOfMemHook = handleOOM
## ##
## If the handler does not raise an exception, ordinary control flow ## If the handler does not raise an exception, ordinary control flow
## continues and the program is terminated. ## continues and the program is terminated.
unhandledExceptionHook*: proc (e: ref Exception) {.nimcall, tags: [], benign, raises: [].} unhandledExceptionHook*: proc (e: ref Exception) {.nimcall, tags: [], benign, raises: [].}
## Set this variable to provide a procedure that should be called ## Set this variable to provide a procedure that should be called
## in case of an `unhandle exception` event. The standard handler ## in case of an `unhandle exception` event. The standard handler
## writes an error message and terminates the program, except when ## writes an error message and terminates the program, except when
## using `--os:any` ## using `--os:any`
type type
PFrame* = ptr TFrame ## Represents a runtime frame of the call stack; PFrame* = ptr TFrame ## Represents a runtime frame of the call stack;