mirror of https://github.com/status-im/NimYAML.git
Implemented basic serialization
* added serialize() procs for some basic types * extended make_serializable to generate serialize() proc
This commit is contained in:
Felix Krause
parent
dc1a3c0fe2
commit
9ff93efb11
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@ -23,6 +23,13 @@ suite "Serialization":
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assert result[0] == "a"
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assert result[1] == "b"
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test "Serialize string sequence":
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var input = @["a", "b"]
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var output = newStringStream()
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dump(wrapWithDocument(serialize(input)), output, coreTagLibrary(),
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yDumpBlockOnly)
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assert output.data == "%YAML 1.2\n--- \n- a\n- b"
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test "Load Table[int, string]":
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let input = newStringStream("23: dreiundzwanzig\n42: zweiundvierzig")
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var
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@ -35,6 +42,15 @@ suite "Serialization":
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assert result[23] == "dreiundzwanzig"
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assert result[42] == "zweiundvierzig"
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test "Serialize Table[int, string]":
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var input = initTable[int, string]()
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input[23] = "dreiundzwanzig"
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input[42] = "zweiundvierzig"
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var output = newStringStream()
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dump(wrapWithDocument(serialize(input)), output, coreTagLibrary(),
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yDumpBlockOnly)
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assert output.data == "%YAML 1.2\n--- \n23: dreiundzwanzig\n42: zweiundvierzig"
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test "Load Sequences in Sequence":
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let input = newStringStream(" - [1, 2, 3]\n - [4, 5]\n - [6]")
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var
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@ -48,6 +64,13 @@ suite "Serialization":
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assert result[1] == @[4, 5]
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assert result[2] == @[6]
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test "Serialize Sequences in Sequence":
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let input = @[@[1, 2, 3], @[4, 5], @[6]]
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var output = newStringStream()
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dump(wrapWithDocument(serialize(input)), output, coreTagLibrary(),
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yDumpDefault)
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assert output.data == "%YAML 1.2\n--- \n- [1, 2, 3]\n- [4, 5]\n- [6]"
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test "Load custom object":
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let input = newStringStream("firstname: Peter\nsurname: Pan\nage: 12")
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var
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@ -59,3 +82,10 @@ suite "Serialization":
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assert result.firstname == "Peter"
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assert result.surname == "Pan"
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assert result.age == 12
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test "Serialize custom object":
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let input = Person(firstname: "Peter", surname: "Pan", age: 12)
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var output = newStringStream()
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dump(wrapWithDocument(serialize(input)), output, coreTagLibrary(),
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yDumpBlockOnly)
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assert output.data == "%YAML 1.2\n--- \nfirstname: Peter\nsurname: Pan\nage: 12"
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@ -25,10 +25,12 @@ macro make_serializable*(types: stmt): stmt =
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assert objectTy[1].kind == nnkEmpty
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let recList = objectTy[2]
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assert recList.kind == nnkRecList
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# construct()
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var constructProc = newProc(newIdentNode("construct"), [
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newEmptyNode(),
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newIdentDefs(newIdentNode("s"), newNimNode(nnkVarTy).add(
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newIdentNode("YamlStream"))),
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newIdentDefs(newIdentNode("s"), newIdentNode("YamlStream")),
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newIdentDefs(newIdentNode("result"),
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newNimNode(nnkVarTy).add(tIdent))])
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var impl = quote do:
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@ -64,13 +66,58 @@ macro make_serializable*(types: stmt): stmt =
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constructProc[6] = impl
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result.add(constructProc)
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# serialize()
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var serializeProc = newProc(newIdentNode("serialize"), [
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newIdentNode("YamlStream"),
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newIdentDefs(newIdentNode("value"), tIdent),
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newIdentDefs(newIdentNode("verboseTags"), newIdentNode("bool"),
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newIdentNode("false"))])
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var iterBody = quote do:
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yield YamlStreamEvent(kind: yamlStartMap,
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mapTag: yTagQuestionMark,
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mapAnchor: yAnchorNone)
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yield YamlStreamEvent(kind: yamlEndMap)
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var i = 1
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for field in objectFields(recList):
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let
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fieldIterIdent = newIdentNode($field.name & "Events")
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fieldNameString = newStrLitNode($field.name)
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iterbody.insert(i, quote do:
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yield YamlStreamEvent(kind: yamlScalar,
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scalarTag: yTagQuestionMark,
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scalarAnchor: yAnchorNone,
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scalarContent: `fieldNameString`)
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)
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iterbody.insert(i + 1, newVarStmt(fieldIterIdent,
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newCall("serialize", newDotExpr(newIdentNode("value"),
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field.name), newIdentNode("verboseTags"))))
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iterbody.insert(i + 2, quote do:
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for event in `fieldIterIdent`():
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yield event
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)
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i += 3
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impl = newStmtList(newAssignment(newIdentNode("result"), newProc(
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newEmptyNode(), [newIdentNode("YamlStreamEvent")], iterBody,
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nnkIteratorDef)))
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serializeProc[6] = impl
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result.add(serializeProc)
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proc prepend*(event: YamlStreamEvent, s: YamlStream): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield event
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for e in s():
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yield e
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proc construct*(s: var YamlStream, result: var string) =
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proc wrapWithDocument*(s: YamlStream): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlStartDocument)
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for event in s():
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yield event
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yield YamlStreamEvent(kind: yamlEndDocument)
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proc construct*(s: YamlStream, result: var string) =
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let item = s()
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if finished(s) or item.kind != yamlScalar:
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raise newException(ValueError, "Construction error!")
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@ -78,7 +125,13 @@ proc construct*(s: var YamlStream, result: var string) =
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raise newException(ValueError, "Wrong tag for string.")
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result = item.scalarContent
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proc construct*(s: var YamlStream, result: var int) =
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proc serialize*(value: string, verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlScalar, scalarTag:
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if verboseTags: yTagString else: yTagQuestionMark,
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scalarAnchor: yAnchorNone, scalarContent: value)
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proc construct*(s: YamlStream, result: var int) =
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let item = s()
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if finished(s) or item.kind != yamlScalar:
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raise newException(ValueError, "Construction error!")
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@ -87,7 +140,13 @@ proc construct*(s: var YamlStream, result: var int) =
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raise newException(ValueError, "Wrong scalar type for int.")
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result = parseInt(item.scalarContent)
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proc contruct*(s: var YamlStream, result: var int64) =
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proc serialize*(value: int, verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlScalar, scalarTag:
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if verboseTags: yTagInteger else: yTagQuestionMark,
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scalarAnchor: yAnchorNone, scalarContent: $value)
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proc contruct*(s: YamlStream, result: var int64) =
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let item = s()
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if finished(s) or item.kind != yamlScalar:
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raise newException(ValueError, "Construction error!")
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@ -96,7 +155,13 @@ proc contruct*(s: var YamlStream, result: var int64) =
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raise newException(ValueError, "Wrong scalar type for int64.")
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result = parseBiggestInt(item.scalarContent)
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proc construct*(s: var YamlStream, result: var float) =
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proc serialize*(value: int64, verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlScalar, scalarTag:
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if verboseTags: yTagInteger else: yTagQuestionMark,
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scalarAnchor: yAnchorNone, scalarContent: $value)
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proc construct*(s: YamlStream, result: var float) =
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let item = s()
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if finished(s) or item.kind != yamlScalar:
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raise newException(ValueError, "Construction error!")
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@ -115,7 +180,19 @@ proc construct*(s: var YamlStream, result: var float) =
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else:
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raise newException(ValueError, "Wrong scalar type for float.")
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proc construct*(s: var YamlStream, result: var bool) =
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proc serialize*(value: float, verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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var asString = case value
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of Inf: ".inf"
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of NegInf: "-.inf"
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of NaN: ".nan"
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else: $value
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yield YamlStreamEvent(kind: yamlScalar, scalarTag:
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if verboseTags: yTagFloat else: yTagQuestionMark,
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scalarAnchor: yAnchorNone, scalarContent: asString)
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proc construct*(s: YamlStream, result: var bool) =
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let item = s()
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if finished(s) or item.kind != yamlScalar:
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raise newException(ValueError, "Construction error!")
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@ -129,7 +206,14 @@ proc construct*(s: var YamlStream, result: var bool) =
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else:
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raise newException(ValueError, "Wrong scalar type for bool.")
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proc construct*[T](s: var YamlStream, result: var seq[T]) =
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proc serialize*(value: bool, verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlScalar, scalarTag:
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if verboseTags: yTagBoolean else: yTagQuestionMark,
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scalarAnchor: yAnchorNone, scalarContent:
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if value: "y" else: "n")
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proc construct*[T](s: YamlStream, result: var seq[T]) =
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var event = s()
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if finished(s) or event.kind != yamlStartSequence:
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raise newException(ValueError, "Construction error!")
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@ -149,7 +233,17 @@ proc construct*[T](s: var YamlStream, result: var seq[T]) =
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if finished(s):
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raise newException(ValueError, "Construction error!")
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proc construct*[K, V](s: var YamlStream, result: var Table[K, V]) =
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proc serialize*[T](value: seq[T], verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlStartSequence, seqTag: yTagQuestionMark,
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seqAnchor: yAnchorNone)
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for item in value:
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var events = serialize(item, verboseTags)
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for event in events():
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yield event
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yield YamlStreamEvent(kind: yamlEndSequence)
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proc construct*[K, V](s: YamlStream, result: var Table[K, V]) =
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var event = s()
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if finished(s) or event.kind != yamlStartMap:
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raise newException(ValueError, "Construction error!")
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@ -170,3 +264,17 @@ proc construct*[K, V](s: var YamlStream, result: var Table[K, V]) =
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event = s()
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if finished(s):
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raise newException(ValueError, "Construction error!")
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proc serialize*[K, V](value: Table[K, V],
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verboseTags: bool = false): YamlStream =
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result = iterator(): YamlStreamEvent =
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yield YamlStreamEvent(kind: yamlStartMap, mapTag: yTagQuestionMark,
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mapAnchor: yAnchorNone)
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for key, value in value.pairs:
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var events = serialize(key, verboseTags)
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for event in events():
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yield event
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events = serialize(value, verboseTags)
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for event in events():
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yield event
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yield YamlStreamEvent(kind: yamlEndMap)
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