mirror of https://github.com/status-im/NimYAML.git
51 lines
1.5 KiB
Nim
51 lines
1.5 KiB
Nim
import yaml, streams
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type Person = object
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name: string
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setTagUri(Person, nimTag("demo:Person"), yTagPerson)
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var
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s = newFileStream("in.yaml", fmRead)
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context = newConstructionContext()
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parser = newYamlParser(serializationTagLibrary)
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events = parser.parse(s)
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assert events.next().kind == yamlStartDoc
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assert events.next().kind == yamlStartSeq
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var nextEvent = events.peek()
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while nextEvent.kind != yamlEndSeq:
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var curTag = nextEvent.tag()
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if curTag == yTagQuestionMark:
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# we only support implicitly tagged scalars
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assert nextEvent.kind == yamlScalar
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case guessType(nextEvent.scalarContent)
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of yTypeInteger: curTag = yTagInteger
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of yTypeBoolTrue, yTypeBoolFalse:
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curTag = yTagBoolean
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of yTypeUnknown: curTag = yTagString
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else: assert false, "Type not supported!"
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elif curTag == yTagExclamationMark:
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curTag = yTagString
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case curTag
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of yTagString:
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var s: string
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events.constructChild(context, s)
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echo "got string: ", s
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of yTagInteger:
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var i: int32
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events.constructChild(context, i)
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echo "got integer: ", i
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of yTagBoolean:
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var b: bool
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events.constructChild(context, b)
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echo "got boolean: ", b
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of yTagPerson:
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var p: Person
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events.constructChild(context, p)
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echo "got Person with name: ", p.name
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else: assert false, "unsupported tag: " & $curTag
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nextEvent = events.peek()
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assert events.next().kind == yamlEndSeq
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assert events.next().kind == yamlEndDoc
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assert events.finished()
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s.close() |