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Serialization: Better proc names 

* renamed serialize to serializeObject and construct to constructObject
 * added new serialize() and construct() procs that handle document
   start & end
 * re-raise AssertionError instead of swallowing it
This commit is contained in:
Felix Krause 2016-01-26 20:51:21 +01:00
parent 4c3f7cd485
commit 5162c310ce
3 changed files with 92 additions and 76 deletions
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2
private/json.nim
View File

@ -91,6 +91,7 @@ proc constructJson*(s: YamlStream): seq[JsonNode] =
try: try:
item = s() item = s()
if finished(s): break if finished(s): break
except AssertionError: raise
except Exception: except Exception:
var e = newException(YamlConstructionStreamError, "") var e = newException(YamlConstructionStreamError, "")
e.parent = getCurrentException() e.parent = getCurrentException()
@ -213,6 +214,7 @@ proc loadToJson*(s: Stream): seq[JsonNode] =
else: else:
# can never happen # can never happen
assert(false) assert(false)
except AssertionError: raise
except Exception: except Exception:
# compiler bug: https://github.com/nim-lang/Nim/issues/3772 # compiler bug: https://github.com/nim-lang/Nim/issues/3772
assert(false) assert(false)

12
test/serializing.nim
View File

@ -17,9 +17,7 @@ suite "Serialization":
result: seq[string] result: seq[string]
parser = newYamlParser(tagLib) parser = newYamlParser(tagLib)
events = parser.parse(input) events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, result) construct(events, result)
assert events().kind == yamlEndDocument
assert result.len == 2 assert result.len == 2
assert result[0] == "a" assert result[0] == "a"
assert result[1] == "b" assert result[1] == "b"
@ -36,9 +34,7 @@ suite "Serialization":
result: Table[int32, string] result: Table[int32, string]
parser = newYamlParser(tagLib) parser = newYamlParser(tagLib)
events = parser.parse(input) events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, result) construct(events, result)
assert events().kind == yamlEndDocument
assert result.len == 2 assert result.len == 2
assert result[23] == "dreiundzwanzig" assert result[23] == "dreiundzwanzig"
assert result[42] == "zweiundvierzig" assert result[42] == "zweiundvierzig"
@ -57,9 +53,7 @@ suite "Serialization":
result: seq[seq[int32]] result: seq[seq[int32]]
parser = newYamlParser(tagLib) parser = newYamlParser(tagLib)
events = parser.parse(input) events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, result) construct(events, result)
assert events().kind == yamlEndDocument
assert result.len == 3 assert result.len == 3
assert result[0] == @[1.int32, 2.int32, 3.int32] assert result[0] == @[1.int32, 2.int32, 3.int32]
assert result[1] == @[4.int32, 5.int32] assert result[1] == @[4.int32, 5.int32]
@ -78,9 +72,7 @@ suite "Serialization":
result: Person result: Person
parser = newYamlParser(tagLib) parser = newYamlParser(tagLib)
events = parser.parse(input) events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, result) construct(events, result)
assert events().kind == yamlEndDocument
assert result.firstname == "Peter" assert result.firstname == "Peter"
assert result.surname == "Pan" assert result.surname == "Pan"
assert result.age == 12 assert result.age == 12
@ -98,9 +90,7 @@ suite "Serialization":
result: seq[string] result: seq[string]
parser = newYamlParser(tagLib) parser = newYamlParser(tagLib)
events = parser.parse(input) events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, result) construct(events, result)
assert events().kind == yamlEndDocument
assert result[0] == "one" assert result[0] == "one"
assert result[1] == "two" assert result[1] == "two"
@ -117,9 +107,7 @@ suite "Serialization":
result: Person result: Person
parser = newYamlParser(tagLib) parser = newYamlParser(tagLib)
events = parser.parse(input) events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, result) construct(events, result)
assert events().kind == yamlEndDocument
assert result.firstname == "Peter" assert result.firstname == "Peter"
assert result.surname == "Pan" assert result.surname == "Pan"
assert result.age == 12 assert result.age == 12

154
yaml/serialization.nim
View File

@ -133,9 +133,9 @@ macro serializable*(types: stmt): stmt =
yamlTagProc[6] = impl yamlTagProc[6] = impl
result.add(yamlTagProc) result.add(yamlTagProc)
# construct() # constructObject()
var constructProc = newProc(newIdentNode("construct"), [ var constructProc = newProc(newIdentNode("constructObject"), [
newEmptyNode(), newEmptyNode(),
newIdentDefs(newIdentNode("s"), newIdentNode("YamlStream")), newIdentDefs(newIdentNode("s"), newIdentNode("YamlStream")),
newIdentDefs(newIdentNode("result"), newIdentDefs(newIdentNode("result"),
@ -170,17 +170,17 @@ macro serializable*(types: stmt): stmt =
for field in objectFields(recList): for field in objectFields(recList):
keyCase.insert(1, newNimNode(nnkOfBranch).add( keyCase.insert(1, newNimNode(nnkOfBranch).add(
newStrLitNode($field.name.ident)).add(newStmtList( newStrLitNode($field.name.ident)).add(newStmtList(
newCall("construct", [newIdentNode("s"), newDotExpr( newCall("constructObject", [newIdentNode("s"),
newIdentNode("result"), field.name)]) newDotExpr(newIdentNode("result"), field.name)])
)) ))
) )
constructProc[6] = impl constructProc[6] = impl
result.add(constructProc) result.add(constructProc)
# serialize() # serializeObject()
var serializeProc = newProc(newIdentNode("serialize"), [ var serializeProc = newProc(newIdentNode("serializeObject"), [
newIdentNode("YamlStream"), newIdentNode("YamlStream"),
newIdentDefs(newIdentNode("value"), tIdent), newIdentDefs(newIdentNode("value"), tIdent),
newIdentDefs(newIdentNode("tagStyle"), newIdentDefs(newIdentNode("tagStyle"),
@ -231,7 +231,7 @@ macro serializable*(types: stmt): stmt =
scalarContent: `fieldNameString`) scalarContent: `fieldNameString`)
) )
iterbody.insert(i + 1, newVarStmt(fieldIterIdent, iterbody.insert(i + 1, newVarStmt(fieldIterIdent,
newCall("serialize", newDotExpr(newIdentNode("value"), newCall("serializeObject", newDotExpr(newIdentNode("value"),
field.name), newIdentNode("childTagStyle")))) field.name), newIdentNode("childTagStyle"))))
iterbody.insert(i + 2, quote do: iterbody.insert(i + 2, quote do:
for event in `fieldIterIdent`(): for event in `fieldIterIdent`():
@ -293,37 +293,37 @@ template safeNextEvent(e: YamlStreamEvent, s: YamlStream) =
proc yamlTag*(T: typedesc[string]): TagId {.inline, raises: [].} = yTagString proc yamlTag*(T: typedesc[string]): TagId {.inline, raises: [].} = yTagString
proc construct*(s: YamlStream, result: var string) proc constructObject*(s: YamlStream, result: var string)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var item: YamlStreamEvent var item: YamlStreamEvent
constructScalarItem(item, "string", yTagString): constructScalarItem(item, "string", yTagString):
result = item.scalarContent result = item.scalarContent
proc serialize*(value: string, proc serializeObject*(value: string,
tagStyle: TagStyle = tsNone): YamlStream {.raises: [].} = ts: TagStyle = tsNone): YamlStream {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
yield scalarEvent(value, presentTag(string, tagStyle), yAnchorNone) yield scalarEvent(value, presentTag(string, ts), yAnchorNone)
proc yamlTag*(T: typedesc[int8]): TagId {.inline, raises: [].} = yTagNimInt8 proc yamlTag*(T: typedesc[int8]): TagId {.inline, raises: [].} = yTagNimInt8
proc yamlTag*(T: typedesc[int16]): TagId {.inline, raises: [].} = yTagNimInt16 proc yamlTag*(T: typedesc[int16]): TagId {.inline, raises: [].} = yTagNimInt16
proc yamlTag*(T: typedesc[int32]): TagId {.inline, raises: [].} = yTagNimInt32 proc yamlTag*(T: typedesc[int32]): TagId {.inline, raises: [].} = yTagNimInt32
proc yamlTag*(T: typedesc[int64]): TagId {.inline, raises: [].} = yTagNimInt64 proc yamlTag*(T: typedesc[int64]): TagId {.inline, raises: [].} = yTagNimInt64
proc construct*[T: int8|int16|int32|int64](s: YamlStream, result: var T) proc constructObject*[T: int8|int16|int32|int64](s: YamlStream, result: var T)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var item: YamlStreamEvent var item: YamlStreamEvent
constructScalarItem(item, name(T), yamlTag(T)): constructScalarItem(item, name(T), yamlTag(T)):
result = T(parseBiggestInt(item.scalarContent)) result = T(parseBiggestInt(item.scalarContent))
template construct*(s: YamlStream, result: var int) = template constructObject*(s: YamlStream, result: var int) =
{.fatal: "The length of `int` is platform dependent. Use int[8|16|32|64].".} {.fatal: "The length of `int` is platform dependent. Use int[8|16|32|64].".}
discard discard
proc serialize*[T: int8|int16|int32|int64](value: T, proc serializeObject*[T: int8|int16|int32|int64](value: T,
tagStyle: TagStyle = tsNone): ts: TagStyle = tsNone):
YamlStream {.raises: [].} = YamlStream {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
yield scalarEvent($value, presentTag(T, tagStyle), yAnchorNone) yield scalarEvent($value, presentTag(T, ts), yAnchorNone)
template serialize*(value: int, tagStyle: TagStyle = tsNone) = template serialize*(value: int, tagStyle: TagStyle = tsNone) =
{.fatal: "The length of `int` is platform dependent. Use int[8|16|32|64].".} {.fatal: "The length of `int` is platform dependent. Use int[8|16|32|64].".}
@ -346,23 +346,24 @@ proc parseBiggestUInt(s: string): uint64 =
raise newException(ValueError, "Invalid char in uint: " & c) raise newException(ValueError, "Invalid char in uint: " & c)
{.pop.} {.pop.}
proc contstruct*[T: uint8|uint16|uint32|uint64](s: YamlStream, result: var T) proc constructObject*[T: uint8|uint16|uint32|uint64](s: YamlStream,
result: var T)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var item: YamlStreamEvent var item: YamlStreamEvent
constructScalarItem(item, name[T], yamlTag(T)): constructScalarItem(item, name[T], yamlTag(T)):
result = T(parseBiggestUInt(item.scalarContent)) result = T(parseBiggestUInt(item.scalarContent))
template construct*(s: YamlStream, result: var uint) = template constructObject*(s: YamlStream, result: var uint) =
{.fatal: {.fatal:
"The length of `uint` is platform dependent. Use uint[8|16|32|64].".} "The length of `uint` is platform dependent. Use uint[8|16|32|64].".}
discard discard
proc serialize*[T: uint8|uint16|uint32|uint64]( proc serializeObject*[T: uint8|uint16|uint32|uint64](
value: T, tagStyle: TagStyle = tsNone): YamlStream {.raises: [].} = value: T, ts: TagStyle = tsNone): YamlStream {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
yield scalarEvent($value, presentTag(T, tagStyle), yAnchorNone) yield scalarEvent($value, presentTag(T, ts), yAnchorNone)
template serialize*(value: uint, tagStyle: TagStyle = tsNone) = template serializeObject*(value: uint, ts: TagStyle = tsNone) =
{.fatal: {.fatal:
"The length of `uint` is platform dependent. Use uint[8|16|32|64].".} "The length of `uint` is platform dependent. Use uint[8|16|32|64].".}
discard discard
@ -372,7 +373,7 @@ proc yamlTag*(T: typedesc[float32]): TagId {.inline, raises: [].} =
proc yamlTag*(T: typedesc[float64]): TagId {.inline, raises: [].} = proc yamlTag*(T: typedesc[float64]): TagId {.inline, raises: [].} =
yTagNimFloat64 yTagNimFloat64
proc construct*[T: float32|float64](s: YamlStream, result: var T) proc constructObject*[T: float32|float64](s: YamlStream, result: var T)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var item: YamlStreamEvent var item: YamlStreamEvent
constructScalarItem(item, name(T), yamlTag(T)): constructScalarItem(item, name(T), yamlTag(T)):
@ -391,10 +392,10 @@ proc construct*[T: float32|float64](s: YamlStream, result: var T)
raise newException(YamlConstructionError, raise newException(YamlConstructionError,
"Cannot construct to float: " & item.scalarContent) "Cannot construct to float: " & item.scalarContent)
template construct*(s: YamlStream, result: var float) = template constructObject*(s: YamlStream, result: var float) =
{.fatal: "The length of `float` is platform dependent. Use float[32|64].".} {.fatal: "The length of `float` is platform dependent. Use float[32|64].".}
proc serialize*[T: float32|float64](value: T, tagStyle: TagStyle = tsNone): proc serializeObject*[T: float32|float64](value: T, ts: TagStyle = tsNone):
YamlStream {.raises: [].} = YamlStream {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
var var
@ -408,14 +409,14 @@ proc serialize*[T: float32|float64](value: T, tagStyle: TagStyle = tsNone):
asString = ".nan" asString = ".nan"
else: else:
asString = $value asString = $value
yield scalarEvent(asString, presentTag(T, tagStyle), yAnchorNone) yield scalarEvent(asString, presentTag(T, ts), yAnchorNone)
template serialize*(value: float, tagStyle: TagStyle = tsNone) = template serializeObject*(value: float, tagStyle: TagStyle = tsNone) =
{.fatal: "The length of `float` is platform dependent. Use float[32|64].".} {.fatal: "The length of `float` is platform dependent. Use float[32|64].".}
proc yamlTag*(T: typedesc[bool]): TagId {.inline, raises: [].} = yTagBoolean proc yamlTag*(T: typedesc[bool]): TagId {.inline, raises: [].} = yTagBoolean
proc construct*(s: YamlStream, result: var bool) proc constructObject*(s: YamlStream, result: var bool)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var item: YamlStreamEvent var item: YamlStreamEvent
constructScalarItem(item, "bool", yTagBoolean): constructScalarItem(item, "bool", yTagBoolean):
@ -428,15 +429,15 @@ proc construct*(s: YamlStream, result: var bool)
raise newException(YamlConstructionError, raise newException(YamlConstructionError,
"Cannot construct to bool: " & item.scalarContent) "Cannot construct to bool: " & item.scalarContent)
proc serialize*(value: bool, tagStyle: TagStyle = tsNone): YamlStream proc serializeObject*(value: bool, ts: TagStyle = tsNone): YamlStream
{.raises: [].} = {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
yield scalarEvent(if value: "y" else: "n", presentTag(bool, tagStyle), yield scalarEvent(if value: "y" else: "n", presentTag(bool, ts),
yAnchorNone) yAnchorNone)
proc yamlTag*(T: typedesc[char]): TagId {.inline, raises: [].} = yTagNimChar proc yamlTag*(T: typedesc[char]): TagId {.inline, raises: [].} = yTagNimChar
proc construct*(s: YamlStream, result: var char) proc constructObject*(s: YamlStream, result: var char)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var item: YamlStreamEvent var item: YamlStreamEvent
constructScalarItem(item, "char", yTagNimChar): constructScalarItem(item, "char", yTagNimChar):
@ -447,16 +448,16 @@ proc construct*(s: YamlStream, result: var char)
else: else:
result = item.scalarContent[0] result = item.scalarContent[0]
proc serialize*(value: char, tagStyle: TagStyle = tsNone): YamlStream proc serializeObject*(value: char, ts: TagStyle = tsNone): YamlStream
{.raises: [].} = {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
yield scalarEvent("" & value, presentTag(char, tagStyle), yAnchorNone) yield scalarEvent("" & value, presentTag(char, ts), yAnchorNone)
proc yamlTag*[I](T: typedesc[seq[I]]): TagId {.inline, raises: [].} = proc yamlTag*[I](T: typedesc[seq[I]]): TagId {.inline, raises: [].} =
let uri = "!nim:seq(" & safeTagUri(yamlTag(I)) & ")" let uri = "!nim:seq(" & safeTagUri(yamlTag(I)) & ")"
result = lazyLoadTag(uri) result = lazyLoadTag(uri)
proc construct*[T](s: YamlStream, result: var seq[T]) proc constructObject*[T](s: YamlStream, result: var seq[T])
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var event: YamlStreamEvent var event: YamlStreamEvent
safeNextEvent(event, s) safeNextEvent(event, s)
@ -472,7 +473,8 @@ proc construct*[T](s: YamlStream, result: var seq[T])
item: T item: T
events = prepend(event, s) events = prepend(event, s)
try: try:
construct(events, item) constructObject(events, item)
except AssertionError: raise
except: except:
# compiler bug: https://github.com/nim-lang/Nim/issues/3772 # compiler bug: https://github.com/nim-lang/Nim/issues/3772
assert(false) assert(false)
@ -480,15 +482,15 @@ proc construct*[T](s: YamlStream, result: var seq[T])
safeNextEvent(event, s) safeNextEvent(event, s)
assert(not finished(s)) assert(not finished(s))
proc serialize*[T](value: seq[T], tagStyle: TagStyle = tsNone): YamlStream proc serializeObject*[T](value: seq[T], ts: TagStyle = tsNone): YamlStream
{.raises: [].} = {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
let childTagStyle = if tagStyle == tsRootOnly: tsNone else: tagStyle let childTagStyle = if ts == tsRootOnly: tsNone else: ts
yield YamlStreamEvent(kind: yamlStartSequence, yield YamlStreamEvent(kind: yamlStartSequence,
seqTag: presentTag(seq[T], tagStyle), seqTag: presentTag(seq[T], ts),
seqAnchor: yAnchorNone) seqAnchor: yAnchorNone)
for item in value: for item in value:
var events = serialize(item, childTagStyle) var events = serializeObject(item, childTagStyle)
for event in events(): for event in events():
yield event yield event
yield YamlStreamEvent(kind: yamlEndSequence) yield YamlStreamEvent(kind: yamlEndSequence)
@ -508,7 +510,7 @@ proc yamlTag*[K, V](T: typedesc[Table[K, V]]): TagId {.inline, raises: [].} =
# cannot happen (theoretically, you known) # cannot happen (theoretically, you known)
assert(false) assert(false)
proc construct*[K, V](s: YamlStream, result: var Table[K, V]) proc constructObject*[K, V](s: YamlStream, result: var Table[K, V])
{.raises: [YamlConstructionError, YamlConstructionStreamError].} = {.raises: [YamlConstructionError, YamlConstructionStreamError].} =
var event: YamlStreamEvent var event: YamlStreamEvent
safeNextEvent(event, s) safeNextEvent(event, s)
@ -525,8 +527,9 @@ proc construct*[K, V](s: YamlStream, result: var Table[K, V])
value: V value: V
events = prepend(event, s) events = prepend(event, s)
try: try:
construct(events, key) constructObject(events, key)
construct(s, value) constructObject(s, value)
except AssertionError: raise
except Exception: except Exception:
# compiler bug: https://github.com/nim-lang/Nim/issues/3772 # compiler bug: https://github.com/nim-lang/Nim/issues/3772
assert(false) assert(false)
@ -534,66 +537,89 @@ proc construct*[K, V](s: YamlStream, result: var Table[K, V])
safeNextEvent(event, s) safeNextEvent(event, s)
assert(not finished(s)) assert(not finished(s))
proc serialize*[K, V](value: Table[K, V], proc serializeObject*[K, V](value: Table[K, V],
tagStyle: TagStyle = tsNone): YamlStream {.raises: [].} = ts: TagStyle = tsNone): YamlStream {.raises: [].} =
result = iterator(): YamlStreamEvent = result = iterator(): YamlStreamEvent =
let childTagStyle = if tagStyle == tsRootOnly: tsNone else: tagStyle let childTagStyle = if ts == tsRootOnly: tsNone else: ts
yield YamlStreamEvent(kind: yamlStartMap, yield YamlStreamEvent(kind: yamlStartMap,
mapTag: presentTag(Table[K, V], tagStyle), mapTag: presentTag(Table[K, V], ts),
mapAnchor: yAnchorNone) mapAnchor: yAnchorNone)
for key, value in value.pairs: for key, value in value.pairs:
var events = serialize(key, childTagStyle) var events = serializeObject(key, childTagStyle)
for event in events(): for event in events():
yield event yield event
events = serialize(value, childTagStyle) events = serializeObject(value, childTagStyle)
for event in events(): for event in events():
yield event yield event
yield YamlStreamEvent(kind: yamlEndMap) yield YamlStreamEvent(kind: yamlEndMap)
proc construct*[T](s: YamlStream, target: var T)
{.raises: [YamlConstructionError, YamlConstructionStreamError].} =
try:
var e = s()
assert((not finished(s)) and e.kind == yamlStartDocument)
constructObject(s, target)
e = s()
assert((not finished(s)) and e.kind == yamlEndDocument)
except YamlConstructionError, YamlConstructionStreamError, AssertionError:
raise
except Exception:
# may occur while calling s()
var ex = newException(YamlConstructionStreamError, "")
ex.parent = getCurrentException()
raise ex
proc load*[K](input: Stream, target: var K) proc load*[K](input: Stream, target: var K)
{.raises: [YamlConstructionError, IOError, YamlParserError].} = {.raises: [YamlConstructionError, IOError, YamlParserError].} =
var
parser = newYamlParser(serializationTagLibrary)
events = parser.parse(input)
try: try:
var
parser = newYamlParser(serializationTagLibrary)
events = parser.parse(input)
assert events().kind == yamlStartDocument
construct(events, target) construct(events, target)
assert events().kind == yamlEndDocument except YamlConstructionError, AssertionError:
except YamlConstructionError, IOError, YamlParserError:
raise raise
except YamlConstructionStreamError: except YamlConstructionStreamError:
let e = cast[ref YamlConstructionError](getCurrentException()) let e = (ref YamlConstructionStreamError)(getCurrentException())
if e.parent of IOError: if e.parent of IOError:
raise cast[ref IOError](e.parent) raise (ref IOError)(e.parent)
elif e.parent of YamlParserError: elif e.parent of YamlParserError:
raise cast[ref YamlParserError](e.parent) raise (ref YamlParserError)(e.parent)
else: else:
echo e.parent.repr
assert(false) assert(false)
except Exception: except Exception:
# compiler bug: https://github.com/nim-lang/Nim/issues/3772 # compiler bug: https://github.com/nim-lang/Nim/issues/3772
assert(false) assert(false)
proc dump*[K](value: K, target: Stream, style: PresentationStyle = psDefault, proc serialize*[T](value: T, ts: TagStyle = tsRootOnly):
tagStyle: TagStyle = tsRootOnly, indentationStep: int = 2) YamlStream {.raises: [].} =
{.raises: [YamlConstructionError, YamlConstructionStreamError, result = iterator(): YamlStreamEvent =
YamlPresenterJsonError, YamlPresenterOutputError].} = var serialized = serializeObject(value, ts)
var serialized = serialize(value,
if style == psCanonical: tsAll else: tagStyle)
var events = iterator(): YamlStreamEvent =
yield YamlStreamEvent(kind: yamlStartDocument) yield YamlStreamEvent(kind: yamlStartDocument)
while true: while true:
var event: YamlStreamEvent var event: YamlStreamEvent
try: try:
event = serialized() event = serialized()
if finished(serialized): break if finished(serialized): break
except AssertionError: raise
except Exception: except Exception:
# serializing object does not raise any errors, so we can # serializing object does not raise any errors, so we can
# ignore this # ignore this
assert(false) assert(false)
yield event yield event
yield YamlStreamEvent(kind: yamlEndDocument) yield YamlStreamEvent(kind: yamlEndDocument)
proc dump*[K](value: K, target: Stream, style: PresentationStyle = psDefault,
tagStyle: TagStyle = tsRootOnly, indentationStep: int = 2)
{.raises: [YamlPresenterJsonError, YamlPresenterOutputError].} =
var events = serialize(value, if style == psCanonical: tsAll else: tagStyle)
try: try:
present(events, target, serializationTagLibrary, style, indentationStep) present(events, target, serializationTagLibrary, style, indentationStep)
except YamlPresenterStreamError: except YamlPresenterStreamError:
# serializing object does not raise any errors, so we can ignore this # serializing object does not raise any errors, so we can ignore this
assert(false) assert(false)
except YamlPresenterJsonError, YamlPresenterOutputError, AssertionError:
raise
except Exception:
# cannot occur as serialize() doesn't raise any errors
assert(false)