Merge branch 'devel' of https://github.com/nim-lang/Nim into devel

This commit is contained in:
Charles Blake
2019-06-13 10:21:11 -04:00
14 changed files with 278 additions and 99 deletions

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@@ -1,14 +1,11 @@
version: '{build}'
environment:
DLLS_URL: https://nim-lang.org/download/dlls.zip
DLLS_ARCHIVE: dlls.zip
MINGW_DIR: mingw64
MINGW_URL: https://nim-lang.org/download/mingw64-6.3.0.7z
MINGW_ARCHIVE: mingw64-6.3.0.7z
OPENBLAS_URL: https://sourceforge.net/projects/openblas/files/v0.3.5/OpenBLAS%200.3.5%20version.zip/download
OPENBLAS_ARCHIVE: OpenBLAS-0.3.5.zip
SQLITE_URL: http://www.sqlite.org/2017/sqlite-dll-win64-x64-3160200.zip
SQLITE_ARCHIVE: sqlite-dll-win64-x64-3160200.zip
platform: x64
matrix:
- NIM_TEST_PACKAGES: false
@@ -16,8 +13,7 @@ environment:
cache:
- '%MINGW_ARCHIVE%'
- '%SQLITE_ARCHIVE%'
- '%OPENBLAS_ARCHIVE%'
- '%DLLS_ARCHIVE%'
matrix:
#allow_failures:
@@ -26,23 +22,14 @@ matrix:
install:
- ps: Install-Product node 8 # node 8 or later is required to test js async stuff
- MKDIR %CD%\DIST
- MKDIR %CD%\DIST\PCRE
- nuget install pcre -Verbosity quiet -Version 8.33.0.1 -OutputDirectory %CD%\DIST\PCRE
- IF not exist "%SQLITE_ARCHIVE%" appveyor DownloadFile "%SQLITE_URL%" -FileName "%SQLITE_ARCHIVE%"
- 7z x -y "%SQLITE_ARCHIVE%" -o"%CD%\DIST"> nul
- IF not exist "%DLLS_ARCHIVE%" appveyor DownloadFile "%DLLS_URL%" -FileName "%DLLS_ARCHIVE%"
- 7z x -y "%DLLS_ARCHIVE%" -o"%CD%\BIN"> nul
- IF not exist "%MINGW_ARCHIVE%" appveyor DownloadFile "%MINGW_URL%" -FileName "%MINGW_ARCHIVE%"
- 7z x -y "%MINGW_ARCHIVE%" -o"%CD%\DIST"> nul
- IF not exist "%OPENBLAS_ARCHIVE%" appveyor DownloadFile "%OPENBLAS_URL%" -FileName "%OPENBLAS_ARCHIVE%"
- 7z x -y "%OPENBLAS_ARCHIVE%" -o"%CD%\DIST"> nul
- SET PATH=%CD%\DIST\%MINGW_DIR%\BIN;%CD%\BIN;%PATH%
- IF "%PLATFORM%" == "x64" ( copy C:\OpenSSL-Win64\libeay32.dll %CD%\BIN\libeay64.dll & copy C:\OpenSSL-Win64\libeay32.dll %CD%\BIN\libeay32.dll & copy C:\OpenSSL-Win64\libssl32.dll %CD%\BIN\libssl64.dll & copy C:\OpenSSL-Win64\libssl32.dll %CD%\BIN\libssl32.dll )
ELSE ( copy C:\OpenSSL-Win32\libeay32.dll %CD%\BIN\libeay32.dll & copy C:\OpenSSL-Win32\libssl32.dll %CD%\BIN\libssl32.dll )
- IF "%PLATFORM%" == "x64" ( copy %CD%\DIST\sqlite3.dll %CD%\BIN\sqlite3_64.dll ) ELSE ( copy %CD%\DIST\sqlite3.dll %CD%\BIN\sqlite3_32.dll )
- IF "%PLATFORM%" == "x64" ( copy %CD%\DIST\PCRE\pcre.redist.8.33.0.1\build\native\bin\v100\x64\Release\dynamic\utf8\pcre8.dll %CD%\bin\pcre64.dll ) ELSE ( copy %CD%\DIST\PCRE\pcre.redist.8.33.0.1\build\native\bin\v100\Win32\Release\dynamic\utf8\pcre8.dll %CD%\bin\pcre32.dll )
- git clone --depth 1 https://github.com/nim-lang/csources
- cd csources
- IF "%PLATFORM%" == "x64" ( build64.bat ) else ( build.bat )
- build64.bat
- cd ..
build_script:

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@@ -346,7 +346,7 @@ proc emitTok*(em: var Emitter; L: TLexer; tok: TToken) =
if endsInAlpha(em):
wrSpace em
elif not em.inquote and not endsInWhite(em) and
em.lastTok notin openPars and not em.lastTokWasTerse:
em.lastTok notin (openPars+{tkOpr, tkDotDot}) and not em.lastTokWasTerse:
#and tok.tokType in oprSet
wrSpace em
@@ -392,8 +392,8 @@ proc emitTok*(em: var Emitter; L: TLexer; tok: TToken) =
wr(em, TokTypeToStr[tok.tokType], ltOther)
if not em.inquote: wrSpace(em)
of tkOpr, tkDotDot:
if ((tok.strongSpaceA == 0 and tok.strongSpaceB == 0) or em.inquote) and
tok.ident.s notin ["<", ">", "<=", ">=", "==", "!="]:
if em.inquote or ((tok.strongSpaceA == 0 and tok.strongSpaceB == 0) and
tok.ident.s notin ["<", ">", "<=", ">=", "==", "!="]):
# bug #9504: remember to not spacify a keyword:
lastTokWasTerse = true
# if not surrounded by whitespace, don't produce any whitespace either:

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@@ -173,7 +173,7 @@ proc isNimIdentifier*(s: string): bool =
inc(i)
result = true
proc tokToStr*(tok: TToken): string =
proc `$`*(tok: TToken): string =
case tok.tokType
of tkIntLit..tkInt64Lit: result = $tok.iNumber
of tkFloatLit..tkFloat64Lit: result = $tok.fNumber
@@ -188,11 +188,11 @@ proc tokToStr*(tok: TToken): string =
proc prettyTok*(tok: TToken): string =
if isKeyword(tok.tokType): result = "keyword " & tok.ident.s
else: result = tokToStr(tok)
else: result = $tok
proc printTok*(conf: ConfigRef; tok: TToken) =
msgWriteln(conf, $tok.line & ":" & $tok.col & "\t" &
TokTypeToStr[tok.tokType] & " " & tokToStr(tok))
TokTypeToStr[tok.tokType] & " " & $tok)
proc initToken*(L: var TToken) =
L.tokType = tkInvalid

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@@ -123,31 +123,31 @@ proc parseDirective(L: var TLexer, tok: var TToken; config: ConfigRef; condStack
of wEnd: doEnd(L, tok, condStack)
of wWrite:
ppGetTok(L, tok)
msgs.msgWriteln(config, strtabs.`%`(tokToStr(tok), config.configVars,
msgs.msgWriteln(config, strtabs.`%`($tok, config.configVars,
{useEnvironment, useKey}))
ppGetTok(L, tok)
else:
case tok.ident.s.normalize
of "putenv":
ppGetTok(L, tok)
var key = tokToStr(tok)
var key = $tok
ppGetTok(L, tok)
os.putEnv(key, tokToStr(tok))
os.putEnv(key, $tok)
ppGetTok(L, tok)
of "prependenv":
ppGetTok(L, tok)
var key = tokToStr(tok)
var key = $tok
ppGetTok(L, tok)
os.putEnv(key, tokToStr(tok) & os.getEnv(key))
os.putEnv(key, $tok & os.getEnv(key))
ppGetTok(L, tok)
of "appendenv":
ppGetTok(L, tok)
var key = tokToStr(tok)
var key = $tok
ppGetTok(L, tok)
os.putEnv(key, os.getEnv(key) & tokToStr(tok))
os.putEnv(key, os.getEnv(key) & $tok)
ppGetTok(L, tok)
else:
lexMessage(L, errGenerated, "invalid directive: '$1'" % tokToStr(tok))
lexMessage(L, errGenerated, "invalid directive: '$1'" % $tok)
proc confTok(L: var TLexer, tok: var TToken; config: ConfigRef; condStack: var seq[bool]) =
ppGetTok(L, tok)
@@ -156,7 +156,7 @@ proc confTok(L: var TLexer, tok: var TToken; config: ConfigRef; condStack: var s
proc checkSymbol(L: TLexer, tok: TToken) =
if tok.tokType notin {tkSymbol..tkInt64Lit, tkStrLit..tkTripleStrLit}:
lexMessage(L, errGenerated, "expected identifier, but got: " & tokToStr(tok))
lexMessage(L, errGenerated, "expected identifier, but got: " & $tok)
proc parseAssignment(L: var TLexer, tok: var TToken;
config: ConfigRef; condStack: var seq[bool]) =
@@ -164,21 +164,21 @@ proc parseAssignment(L: var TLexer, tok: var TToken;
confTok(L, tok, config, condStack) # skip unnecessary prefix
var info = getLineInfo(L, tok) # save for later in case of an error
checkSymbol(L, tok)
var s = tokToStr(tok)
var s = $tok
confTok(L, tok, config, condStack) # skip symbol
var val = ""
while tok.tokType == tkDot:
add(s, '.')
confTok(L, tok, config, condStack)
checkSymbol(L, tok)
add(s, tokToStr(tok))
add(s, $tok)
confTok(L, tok, config, condStack)
if tok.tokType == tkBracketLe:
# BUGFIX: val, not s!
confTok(L, tok, config, condStack)
checkSymbol(L, tok)
add(val, '[')
add(val, tokToStr(tok))
add(val, $tok)
confTok(L, tok, config, condStack)
if tok.tokType == tkBracketRi: confTok(L, tok, config, condStack)
else: lexMessage(L, errGenerated, "expected closing ']'")
@@ -188,12 +188,12 @@ proc parseAssignment(L: var TLexer, tok: var TToken;
if len(val) > 0: add(val, ':')
confTok(L, tok, config, condStack) # skip ':' or '=' or '%'
checkSymbol(L, tok)
add(val, tokToStr(tok))
add(val, $tok)
confTok(L, tok, config, condStack) # skip symbol
while tok.ident != nil and tok.ident.s == "&":
confTok(L, tok, config, condStack)
checkSymbol(L, tok)
add(val, tokToStr(tok))
add(val, $tok)
confTok(L, tok, config, condStack)
if percent:
processSwitch(s, strtabs.`%`(val, config.configVars,

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@@ -343,13 +343,13 @@ proc parseSymbol(p: var TParser, mode = smNormal): PNode =
var accm = ""
while p.tok.tokType in {tkOpr, tkDot, tkDotDot, tkEquals,
tkParLe..tkParDotRi}:
accm.add(tokToStr(p.tok))
accm.add($p.tok)
getTok(p)
let node = newNodeI(nkIdent, lineinfo)
node.ident = p.lex.cache.getIdent(accm)
result.add(node)
of tokKeywordLow..tokKeywordHigh, tkSymbol, tkIntLit..tkCharLit:
result.add(newIdentNodeP(p.lex.cache.getIdent(tokToStr(p.tok)), p))
result.add(newIdentNodeP(p.lex.cache.getIdent($p.tok), p))
getTok(p)
else:
parMessage(p, errIdentifierExpected, p.tok)
@@ -903,6 +903,8 @@ proc parsePragma(p: var TParser): PNode =
#| pragma = '{.' optInd (exprColonExpr comma?)* optPar ('.}' | '}')
result = newNodeP(nkPragma, p)
inc p.inPragma
when defined(nimpretty):
inc p.em.keepIndents
getTok(p)
optInd(p, result)
while p.tok.tokType notin {tkCurlyDotRi, tkCurlyRi, tkEof}:
@@ -921,6 +923,8 @@ proc parsePragma(p: var TParser): PNode =
else:
parMessage(p, "expected '.}'")
dec p.inPragma
when defined(nimpretty):
dec p.em.keepIndents
proc identVis(p: var TParser; allowDot=false): PNode =
#| identVis = symbol opr? # postfix position

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@@ -56,7 +56,7 @@ To compile a release version use::
nim c -d:release greetings.nim
By default the Nim compiler generates a large amount of runtime checks
aiming for your debugging pleasure. With ``-d:release`` these checks are
aiming for your debugging pleasure. With ``-d:release`` some checks are
`turned off and optimizations are turned on
<nimc.html#compiler-usage-compile-time-symbols>`_.

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@@ -568,7 +568,7 @@ when defined(windows) or defined(nimdoc):
if flags.isDisconnectionError(errcode):
retFuture.complete()
else:
retFuture.fail(newException(OSError, osErrorMsg(errcode)))
retFuture.fail(newOSError(errcode))
)
let ret = WSASend(socket.SocketHandle, addr dataBuf, 1, addr bytesReceived,
@@ -1134,11 +1134,6 @@ else:
var data = newAsyncData()
p.selector.registerHandle(fd.SocketHandle, {}, data)
proc closeSocket*(sock: AsyncFD) =
let disp = getGlobalDispatcher()
disp.selector.unregister(sock.SocketHandle)
sock.SocketHandle.close()
proc unregister*(fd: AsyncFD) =
getGlobalDispatcher().selector.unregister(fd.SocketHandle)
@@ -1174,7 +1169,9 @@ else:
let p = getGlobalDispatcher()
not p.selector.isEmpty() or p.timers.len != 0 or p.callbacks.len != 0
template processBasicCallbacks(ident, rwlist: untyped) =
proc processBasicCallbacks(
fd: AsyncFD, event: Event
): tuple[readCbListCount, writeCbListCount: int] =
# Process pending descriptor and AsyncEvent callbacks.
#
# Invoke every callback stored in `rwlist`, until one
@@ -1187,32 +1184,46 @@ else:
# or it can be possible to fall into endless cycle.
var curList: seq[Callback]
withData(p.selector, ident, adata) do:
shallowCopy(curList, adata.rwlist)
adata.rwlist = newSeqOfCap[Callback](InitCallbackListSize)
let selector = getGlobalDispatcher().selector
withData(selector, fd.int, fdData):
case event
of Event.Read:
shallowCopy(curList, fdData.readList)
fdData.readList = newSeqOfCap[Callback](InitCallbackListSize)
of Event.Write:
shallowCopy(curList, fdData.writeList)
fdData.writeList = newSeqOfCap[Callback](InitCallbackListSize)
else:
assert false, "Cannot process callbacks for " & $event
let newLength = max(len(curList), InitCallbackListSize)
var newList = newSeqOfCap[Callback](newLength)
for cb in curList:
if len(newList) > 0:
# A callback has already returned with EAGAIN, don't call any others
# until next `poll`.
if not cb(fd):
# Callback wants to be called again.
newList.add(cb)
else:
if not cb(fd.AsyncFD):
# Callback wants to be called again.
newList.add(cb)
# This callback has returned with EAGAIN, so we don't need to
# call any other callbacks as they are all waiting for the same event
# on the same fd.
break
withData(p.selector, ident, adata) do:
# descriptor still present in queue.
adata.rwlist = newList & adata.rwlist
rLength = len(adata.readList)
wLength = len(adata.writeList)
withData(selector, fd.int, fdData) do:
# Descriptor is still present in the queue.
case event
of Event.Read:
fdData.readList = newList & fdData.readList
of Event.Write:
fdData.writeList = newList & fdData.writeList
else:
assert false, "Cannot process callbacks for " & $event
result.readCbListCount = len(fdData.readList)
result.writeCbListCount = len(fdData.writeList)
do:
# descriptor was unregistered in callback via `unregister()`.
rLength = -1
wLength = -1
# Descriptor was unregistered in callback via `unregister()`.
result.readCbListCount = -1
result.writeCbListCount = -1
template processCustomCallbacks(ident: untyped) =
# Process pending custom event callbacks. Custom events are
@@ -1221,7 +1232,7 @@ else:
# so there is no need to iterate over list.
var curList: seq[Callback]
withData(p.selector, ident, adata) do:
withData(p.selector, ident.int, adata) do:
shallowCopy(curList, adata.readList)
adata.readList = newSeqOfCap[Callback](InitCallbackListSize)
@@ -1232,16 +1243,33 @@ else:
if not cb(fd.AsyncFD):
newList.add(cb)
withData(p.selector, ident, adata) do:
withData(p.selector, ident.int, adata) do:
# descriptor still present in queue.
adata.readList = newList & adata.readList
if len(adata.readList) == 0:
# if no callbacks registered with descriptor, unregister it.
p.selector.unregister(fd)
p.selector.unregister(fd.int)
do:
# descriptor was unregistered in callback via `unregister()`.
discard
proc closeSocket*(sock: AsyncFD) =
let selector = getGlobalDispatcher().selector
if sock.SocketHandle notin selector:
raise newException(ValueError, "File descriptor not registered.")
let data = selector.getData(sock.SocketHandle)
sock.unregister()
sock.SocketHandle.close()
# We need to unblock the read and write callbacks which could still be
# waiting for the socket to become readable and/or writeable.
for cb in data.readList & data.writeList:
if not cb(sock):
raise newException(
ValueError, "Expecting async operations to stop when fd has closed."
)
proc runOnce(timeout = 500): bool =
let p = getGlobalDispatcher()
when ioselSupportedPlatform:
@@ -1257,41 +1285,42 @@ else:
let nextTimer = processTimers(p, result)
var count = p.selector.selectInto(adjustTimeout(timeout, nextTimer), keys)
for i in 0..<count:
var custom = false
let fd = keys[i].fd
let fd = keys[i].fd.AsyncFD
let events = keys[i].events
var rLength = 0 # len(data.readList) after callback
var wLength = 0 # len(data.writeList) after callback
var (readCbListCount, writeCbListCount) = (0, 0)
if Event.Read in events or events == {Event.Error}:
processBasicCallbacks(fd, readList)
(readCbListCount, writeCbListCount) =
processBasicCallbacks(fd, Event.Read)
result = true
if Event.Write in events or events == {Event.Error}:
processBasicCallbacks(fd, writeList)
(readCbListCount, writeCbListCount) =
processBasicCallbacks(fd, Event.Write)
result = true
var isCustomEvent = false
if Event.User in events:
processBasicCallbacks(fd, readList)
custom = true
if rLength == 0:
p.selector.unregister(fd)
(readCbListCount, writeCbListCount) =
processBasicCallbacks(fd, Event.Read)
isCustomEvent = true
if readCbListCount == 0:
p.selector.unregister(fd.int)
result = true
when ioselSupportedPlatform:
if (customSet * events) != {}:
custom = true
isCustomEvent = true
processCustomCallbacks(fd)
result = true
# because state `data` can be modified in callback we need to update
# descriptor events with currently registered callbacks.
if not custom:
if not isCustomEvent and (readCbListCount != -1 and writeCbListCount != -1):
var newEvents: set[Event] = {}
if rLength != -1 and wLength != -1:
if rLength > 0: incl(newEvents, Event.Read)
if wLength > 0: incl(newEvents, Event.Write)
p.selector.updateHandle(SocketHandle(fd), newEvents)
if readCbListCount > 0: incl(newEvents, Event.Read)
if writeCbListCount > 0: incl(newEvents, Event.Write)
p.selector.updateHandle(SocketHandle(fd), newEvents)
# Timer processing.
discard processTimers(p, result)
@@ -1370,7 +1399,7 @@ else:
if flags.isDisconnectionError(lastError):
retFuture.complete()
else:
retFuture.fail(newException(OSError, osErrorMsg(lastError)))
retFuture.fail(newOSError(lastError))
else:
result = false # We still want this callback to be called.
else:

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@@ -393,11 +393,13 @@ proc asyncCheck*[T](future: Future[T]) =
## This should be used instead of ``discard`` to discard void futures,
## or use ``waitFor`` if you need to wait for the future's completion.
assert(not future.isNil, "Future is nil")
future.callback =
proc () =
if future.failed:
injectStacktrace(future)
raise future.error
# TODO: We can likely look at the stack trace here and inject the location
# where the `asyncCheck` was called to give a better error stack message.
proc asyncCheckCallback() =
if future.failed:
injectStacktrace(future)
raise future.error
future.callback = asyncCheckCallback
proc `and`*[T, Y](fut1: Future[T], fut2: Future[Y]): Future[void] =
## Returns a future which will complete once both ``fut1`` and ``fut2``

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@@ -57,8 +57,10 @@ proc osErrorMsg*(errorCode: OSErrorCode): string =
if errorCode != OSErrorCode(0'i32):
result = $c_strerror(errorCode.int32)
proc raiseOSError*(errorCode: OSErrorCode; additionalInfo = "") {.noinline.} =
## Raises an `OSError exception <system.html#OSError>`_.
proc newOSError*(
errorCode: OSErrorCode, additionalInfo = ""
): owned(ref OSError) {.noinline.} =
## Creates a new `OSError exception <system.html#OSError>`_.
##
## The ``errorCode`` will determine the
## message, `osErrorMsg proc <#osErrorMsg,OSErrorCode>`_ will be used
@@ -82,7 +84,14 @@ proc raiseOSError*(errorCode: OSErrorCode; additionalInfo = "") {.noinline.} =
e.msg.addQuoted additionalInfo
if e.msg == "":
e.msg = "unknown OS error"
raise e
return e
proc raiseOSError*(errorCode: OSErrorCode, additionalInfo = "") {.noinline.} =
## Raises an `OSError exception <system.html#OSError>`_.
##
## Read the description of the `newOSError proc <#newOSError,OSErrorCode,string>`_ to learn
## how the exception object is created.
raise newOSError(errorCode, additionalInfo)
{.push stackTrace:off.}
proc osLastError*(): OSErrorCode {.sideEffect.} =

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@@ -3776,8 +3776,11 @@ proc quit*(errormsg: string, errorcode = QuitFailure) {.noReturn.} =
when defined(nimscript) or defined(js) or (hostOS == "standalone"):
echo errormsg
else:
cstderr.rawWrite(errormsg)
cstderr.rawWrite("\n")
when nimvm:
echo errormsg
else:
cstderr.rawWrite(errormsg)
cstderr.rawWrite("\n")
quit(errorcode)
{.pop.} # checks

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@@ -409,3 +409,26 @@ type
ccFastCall, # fastcall (pass parameters in registers)
ccClosure, # proc has a closure
ccNoConvention # needed for generating proper C procs sometimes
proc isValid1*[A](s: HashSet[A]): bool {.deprecated:
"Deprecated since v0.20; sets are initialized by default".} =
## Returns `true` if the set has been initialized (with `initHashSet proc
## <#initHashSet,int>`_ or `init proc <#init,HashSet[A],int>`_).
result = s.data.len > 0
# bug #11468
assert $type(a) == "Option[system.int]"
foo(a, $type(b), c)
foo(type(b), c) # this is ok
proc `<`*[A](s, t: A): bool = discard
proc `==`*[A](s, t: HashSet[A]): bool = discard
proc `<=`*[A](s, t: HashSet[A]): bool = discard
# these are ok:
proc `$`*[A](s: HashSet[A]): string = discard
proc `*`*[A](s1, s2: HashSet[A]): HashSet[A] {.inline.} = discard
proc `-+-`*[A](s1, s2: HashSet[A]): HashSet[A] {.inline.} = discard
# bug #11470

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@@ -419,3 +419,26 @@ type
ccFastCall, # fastcall (pass parameters in registers)
ccClosure, # proc has a closure
ccNoConvention # needed for generating proper C procs sometimes
proc isValid1*[A](s: HashSet[A]): bool {.deprecated:
"Deprecated since v0.20; sets are initialized by default".} =
## Returns `true` if the set has been initialized (with `initHashSet proc
## <#initHashSet,int>`_ or `init proc <#init,HashSet[A],int>`_).
result = s.data.len > 0
# bug #11468
assert $type(a) == "Option[system.int]"
foo(a, $type(b), c)
foo(type(b), c) # this is ok
proc `<`*[A](s, t: A): bool = discard
proc `==`*[A](s, t: HashSet[A]): bool = discard
proc `<=`*[A](s, t: HashSet[A]): bool = discard
# these are ok:
proc `$`*[A](s: HashSet[A]): string = discard
proc `*`*[A](s1, s2: HashSet[A]): HashSet[A] {.inline.} = discard
proc `-+-`*[A](s1, s2: HashSet[A]): HashSet[A] {.inline.} = discard
# bug #11470

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@@ -224,8 +224,8 @@ proc executeEpc(cmd: IdeCmd, args: SexpNode;
execute(cmd, file, dirtyfile, int(line), int(column), graph)
proc returnEpc(socket: Socket, uid: BiggestInt, s: SexpNode|string,
return_symbol = "return") =
let response = $convertSexp([newSSymbol(return_symbol), uid, s])
returnSymbol = "return") =
let response = $convertSexp([newSSymbol(returnSymbol), uid, s])
socket.send(toHex(len(response), 6))
socket.send(response)

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@@ -0,0 +1,99 @@
discard """
outputsub: "send has errored. As expected. All good!"
exitcode: 0
"""
import asyncdispatch, asyncnet
when defined(windows):
from winlean import ERROR_NETNAME_DELETED
else:
from posix import EBADF
# This reproduces a case where a socket remains stuck waiting for writes
# even when the socket is closed.
const
port = Port(50726)
timeout = 5000
var sent = 0
proc keepSendingTo(c: AsyncSocket) {.async.} =
while true:
# This write will eventually get stuck because the client is not reading
# its messages.
let sendFut = c.send("Foobar" & $sent & "\n", flags = {})
if not await withTimeout(sendFut, timeout):
# The write is stuck. Let's simulate a scenario where the socket
# does not respond to PING messages, and we close it. The above future
# should complete after the socket is closed, not continue stalling.
echo("Socket has stalled, closing it")
c.close()
let timeoutFut = withTimeout(sendFut, timeout)
yield timeoutFut
if timeoutFut.failed:
let errCode = ((ref OSError)(timeoutFut.error)).errorCode
# The behaviour differs across platforms. On Windows ERROR_NETNAME_DELETED
# is raised which we classif as a "diconnection error", hence we overwrite
# the flags above in the `send` call so that this error is raised.
#
# On Linux the EBADF error code is raised, this is because the socket
# is closed.
#
# This means that by default the behaviours will differ between Windows
# and Linux. I think this is fine though, it makes sense mainly because
# Windows doesn't use a IO readiness model. We can fix this later if
# necessary to reclassify ERROR_NETNAME_DELETED as not a "disconnection
# error" (TODO)
when defined(windows):
if errCode == ERROR_NETNAME_DELETED:
echo("send has errored. As expected. All good!")
quit(QuitSuccess)
else:
raise newException(ValueError, "Test failed. Send failed with code " & $errCode)
else:
if errCode == EBADF:
echo("send has errored. As expected. All good!")
quit(QuitSuccess)
else:
raise newException(ValueError, "Test failed. Send failed with code " & $errCode)
# The write shouldn't succeed and also shouldn't be stalled.
if timeoutFut.read():
raise newException(ValueError, "Test failed. Send was expected to fail.")
else:
raise newException(ValueError, "Test failed. Send future is still stalled.")
sent.inc(1)
proc startClient() {.async.} =
let client = newAsyncSocket()
await client.connect("localhost", port)
echo("Connected")
let firstLine = await client.recvLine()
echo("Received first line as a client: ", firstLine)
echo("Now not reading anymore")
while true: await sleepAsync(1000)
proc debug() {.async.} =
while true:
echo("Sent ", sent)
await sleepAsync(1000)
proc server() {.async.} =
var s = newAsyncSocket()
s.setSockOpt(OptReuseAddr, true)
s.bindAddr(port)
s.listen()
# We're now ready to accept connections, so start the client
asyncCheck startClient()
asyncCheck debug()
while true:
let client = await accept(s)
asyncCheck keepSendingTo(client)
when isMainModule:
waitFor server()