NimYAML/private/tagLibrary.nim

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# NimYAML - YAML implementation in Nim
# (c) Copyright 2015 Felix Krause
#
# See the file "copying.txt", included in this
# distribution, for details about the copyright.
proc initTagLibrary*(): YamlTagLibrary =
result.tags = initTable[string, TagId]()
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result.nextCustomTagId = yFirstCustomTagId
result.secondaryPrefix = yamlTagRepositoryPrefix
proc registerUri*(tagLib: var YamlTagLibrary, uri: string): TagId =
tagLib.tags[uri] = tagLib.nextCustomTagId
result = tagLib.nextCustomTagId
tagLib.nextCustomTagId = cast[TagId](cast[int](tagLib.nextCustomTagId) + 1)
proc uri*(tagLib: YamlTagLibrary, id: TagId): string =
for iUri, iId in tagLib.tags.pairs:
if iId == id:
return iUri
raise newException(KeyError, "Unknown tag id: " & $id)
proc failsafeTagLibrary*(): YamlTagLibrary =
result = initTagLibrary()
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result.tags["!"] = yTagExclamationMark
result.tags["?"] = yTagQuestionMark
result.tags["tag:yaml.org,2002:str"] = yTagString
result.tags["tag:yaml.org,2002:seq"] = yTagSequence
result.tags["tag:yaml.org,2002:map"] = yTagMap
proc coreTagLibrary*(): YamlTagLibrary =
result = failsafeTagLibrary()
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result.tags["tag:yaml.org,2002:null"] = yTagNull
result.tags["tag:yaml.org,2002:bool"] = yTagBoolean
result.tags["tag:yaml.org,2002:int"] = yTagInteger
result.tags["tag:yaml.org,2002:float"] = yTagFloat
proc extendedTagLibrary*(): YamlTagLibrary =
result = coreTagLibrary()
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result.tags["tag:yaml.org,2002:omap"] = yTagOrderedMap
result.tags["tag:yaml.org,2002:pairs"] = yTagPairs
result.tags["tag:yaml.org,2002:binary"] = yTagBinary
result.tags["tag:yaml.org,2002:merge"] = yTagMerge
result.tags["tag:yaml.org,2002:timestamp"] = yTagTimestamp
result.tags["tag:yaml.org,2002:value"] = yTagValue
result.tags["tag:yaml.org,2002:yaml"] = yTagYaml