2015-12-28 21:24:05 +00:00
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# NimYAML - YAML implementation in Nim
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# (c) Copyright 2015 Felix Krause
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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2016-01-24 20:38:29 +00:00
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import typetraits
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2015-12-27 15:36:32 +00:00
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type
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DumperState = enum
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2016-01-11 18:12:55 +00:00
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dBlockExplicitMapKey, dBlockImplicitMapKey, dBlockMapValue,
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2016-01-11 18:53:19 +00:00
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dBlockInlineMap, dBlockSequenceItem, dFlowImplicitMapKey, dFlowMapValue,
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dFlowExplicitMapKey, dFlowSequenceItem, dFlowMapStart,
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dFlowSequenceStart
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2015-12-27 15:36:32 +00:00
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2016-01-05 18:58:46 +00:00
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proc needsEscaping(scalar: string): bool {.raises: [].} =
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2016-01-24 18:15:50 +00:00
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scalar.len == 0 or scalar[0] in ['@', '`'] or
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2016-01-14 18:00:03 +00:00
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scalar.find({'{', '}', '[', ']', ',', '#', '-', ':', '?', '%', '"',
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'\'', '\x0A', '\c'}) != -1
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2015-12-27 15:36:32 +00:00
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2016-01-05 18:58:46 +00:00
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proc writeDoubleQuoted(scalar: string, s: Stream)
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{.raises: [YamlPresenterOutputError].} =
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try:
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s.write('"')
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for c in scalar:
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if c == '"':
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s.write('\\')
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s.write(c)
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2016-01-14 18:00:03 +00:00
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s.write('"')
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2016-01-05 18:58:46 +00:00
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except:
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var e = newException(YamlPresenterOutputError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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template safeWrite(s: string or char) {.dirty.} =
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try:
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target.write(s)
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except:
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var e = newException(YamlPresenterOutputError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2015-12-27 15:36:32 +00:00
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2016-01-14 21:51:30 +00:00
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proc startItem(target: Stream, style: PresentationStyle, indentation: int,
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2016-01-11 18:12:55 +00:00
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state: var DumperState, isObject: bool)
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{.raises: [YamlPresenterOutputError].} =
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2016-01-05 18:58:46 +00:00
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try:
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case state
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2016-01-11 18:12:55 +00:00
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of dBlockMapValue:
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2016-01-05 18:58:46 +00:00
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target.write('\x0A')
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2015-12-27 15:36:32 +00:00
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target.write(repeat(' ', indentation))
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2016-01-14 21:51:30 +00:00
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if isObject or style == psCanonical:
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2016-01-11 18:12:55 +00:00
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target.write("? ")
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state = dBlockExplicitMapKey
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else:
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state = dBlockImplicitMapKey
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2016-01-11 18:53:19 +00:00
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of dBlockInlineMap:
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state = dBlockImplicitMapKey
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2016-01-05 18:58:46 +00:00
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of dBlockExplicitMapKey:
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target.write('\x0A')
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2015-12-27 15:36:32 +00:00
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target.write(repeat(' ', indentation))
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2016-01-05 18:58:46 +00:00
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target.write(": ")
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2016-01-11 18:12:55 +00:00
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state = dBlockMapValue
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2016-01-05 18:58:46 +00:00
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of dBlockImplicitMapKey:
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target.write(": ")
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2016-01-11 18:12:55 +00:00
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state = dBlockMapValue
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2016-01-05 18:58:46 +00:00
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of dFlowExplicitMapKey:
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2016-01-14 21:51:30 +00:00
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if style != psMinimal:
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2016-01-11 19:58:24 +00:00
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target.write('\x0A')
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target.write(repeat(' ', indentation))
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2016-01-05 18:58:46 +00:00
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target.write(": ")
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2016-01-11 18:12:55 +00:00
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state = dFlowMapValue
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of dFlowMapValue:
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2016-01-14 21:51:30 +00:00
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if (isObject and style != psMinimal) or
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style in [psJson, psCanonical]:
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2016-01-11 18:12:55 +00:00
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target.write(",\x0A" & repeat(' ', indentation))
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2016-01-14 21:51:30 +00:00
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if style == psJson:
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2016-01-14 18:00:03 +00:00
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state = dFlowImplicitMapKey
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else:
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2016-01-11 18:12:55 +00:00
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target.write("? ")
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2016-01-14 18:00:03 +00:00
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state = dFlowExplicitMapKey
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2016-01-14 21:51:30 +00:00
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elif isObject and style == psMinimal:
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2016-01-11 20:01:36 +00:00
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target.write(", ? ")
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2016-01-11 20:12:38 +00:00
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state = dFlowExplicitMapKey
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2016-01-05 18:58:46 +00:00
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else:
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target.write(", ")
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2016-01-11 18:12:55 +00:00
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state = dFlowImplicitMapKey
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of dFlowMapStart:
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2016-01-14 21:51:30 +00:00
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if (isObject and style != psMinimal) or
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style in [psJson, psCanonical]:
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2016-01-11 18:12:55 +00:00
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target.write("\x0A" & repeat(' ', indentation))
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2016-01-14 21:51:30 +00:00
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if style == psJson:
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2016-01-14 18:00:03 +00:00
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state = dFlowImplicitMapKey
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else:
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2016-01-11 18:12:55 +00:00
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target.write("? ")
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2016-01-14 18:00:03 +00:00
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state = dFlowExplicitMapKey
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2016-01-11 18:12:55 +00:00
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else:
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state = dFlowImplicitMapKey
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of dFlowImplicitMapKey:
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target.write(": ")
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state = dFlowMapValue
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2016-01-05 18:58:46 +00:00
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of dBlockSequenceItem:
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target.write('\x0A')
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target.write(repeat(' ', indentation))
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target.write("- ")
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of dFlowSequenceStart:
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case style
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2016-01-14 21:51:30 +00:00
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of psMinimal, psDefault:
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2016-01-05 18:58:46 +00:00
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discard
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2016-01-14 21:51:30 +00:00
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of psCanonical, psJson:
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2016-01-05 18:58:46 +00:00
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target.write('\x0A')
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target.write(repeat(' ', indentation))
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2016-01-14 21:51:30 +00:00
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of psBlockOnly:
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2016-01-05 18:58:46 +00:00
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discard # can never happen
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state = dFlowSequenceItem
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of dFlowSequenceItem:
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case style
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2016-01-14 21:51:30 +00:00
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of psMinimal, psDefault:
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2016-01-05 18:58:46 +00:00
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target.write(", ")
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2016-01-14 21:51:30 +00:00
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of psCanonical, psJson:
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2016-01-05 18:58:46 +00:00
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target.write(",\x0A")
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target.write(repeat(' ', indentation))
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2016-01-14 21:51:30 +00:00
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of psBlockOnly:
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2016-01-05 18:58:46 +00:00
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discard # can never happen
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except:
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var e = newException(YamlPresenterOutputError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2016-01-28 20:59:26 +00:00
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proc anchorName(a: AnchorId): string {.raises: [].} =
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result = ""
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var i = int(a)
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while i >= 0:
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let j = i mod 36
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if j < 26: result.add(char(j + ord('a')))
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else: result.add(char(j + ord('0') - 26))
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i -= 36
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2016-01-14 21:51:30 +00:00
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proc writeTagAndAnchor(target: Stream, tag: TagId, tagLib: TagLibrary,
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2016-01-05 18:58:46 +00:00
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anchor: AnchorId) {.raises:[YamlPresenterOutputError].} =
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try:
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if tag notin [yTagQuestionMark, yTagExclamationMark]:
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let tagUri = tagLib.uri(tag)
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if tagUri.startsWith(tagLib.secondaryPrefix):
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target.write("!!")
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2016-01-24 10:44:10 +00:00
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target.write(tagUri[18..tagUri.high])
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2016-01-05 18:58:46 +00:00
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target.write(' ')
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elif tagUri.startsWith("!"):
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target.write(tagUri)
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target.write(' ')
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else:
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target.write("!<")
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target.write(tagUri)
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target.write("> ")
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if anchor != yAnchorNone:
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target.write("&")
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2016-01-28 20:59:26 +00:00
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target.write(anchorName(anchor))
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2016-01-04 20:46:33 +00:00
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target.write(' ')
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2016-01-05 18:58:46 +00:00
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except:
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var e = newException(YamlPresenterOutputError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2015-12-27 15:36:32 +00:00
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2016-01-14 21:51:30 +00:00
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proc present*(s: YamlStream, target: Stream, tagLib: TagLibrary,
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style: PresentationStyle = psDefault,
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2016-01-04 20:46:33 +00:00
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indentationStep: int = 2) =
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2015-12-27 15:36:32 +00:00
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var
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cached = initQueue[YamlStreamEvent]()
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cacheIterator = iterator(): YamlStreamEvent =
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while true:
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while cached.len > 0:
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yield cached.dequeue()
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2016-01-05 18:58:46 +00:00
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try:
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let item = s()
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if finished(s):
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break
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cached.enqueue(item)
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2016-01-24 20:21:37 +00:00
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except Exception:
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2016-01-05 18:58:46 +00:00
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var e = newException(YamlPresenterStreamError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2015-12-27 15:36:32 +00:00
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indentation = 0
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levels = newSeq[DumperState]()
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for item in cacheIterator():
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case item.kind
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of yamlStartDocument:
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2016-01-14 21:51:30 +00:00
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if style != psJson:
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2015-12-27 15:36:32 +00:00
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# TODO: tag directives
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2016-01-05 18:58:46 +00:00
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try:
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target.write("%YAML 1.2\x0A")
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if tagLib.secondaryPrefix != yamlTagRepositoryPrefix:
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target.write("%TAG !! " &
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tagLib.secondaryPrefix & '\x0A')
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target.write("--- ")
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except:
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var e = newException(YamlPresenterOutputError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2015-12-27 15:36:32 +00:00
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of yamlScalar:
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if levels.len == 0:
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2016-01-14 21:51:30 +00:00
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if style != psJson:
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2016-01-05 18:58:46 +00:00
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safeWrite('\x0A')
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2015-12-27 15:36:32 +00:00
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else:
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2016-01-11 18:12:55 +00:00
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startItem(target, style, indentation, levels[levels.high],
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false)
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2016-01-14 21:51:30 +00:00
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if style != psJson:
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2015-12-27 15:36:32 +00:00
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writeTagAndAnchor(target,
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item.scalarTag, tagLib, item.scalarAnchor)
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2016-01-14 21:51:30 +00:00
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if style == psJson:
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2016-01-14 18:58:38 +00:00
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let hint = guessType(item.scalarContent)
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2016-01-05 18:06:55 +00:00
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if item.scalarTag in [yTagQuestionMark, yTagBoolean] and
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2016-01-14 18:58:38 +00:00
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hint in [yTypeBoolTrue, yTypeBoolFalse]:
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if hint == yTypeBoolTrue:
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2016-01-05 18:58:46 +00:00
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safeWrite("true")
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2016-01-05 18:06:55 +00:00
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else:
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2016-01-05 18:58:46 +00:00
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safeWrite("false")
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2016-01-05 18:06:55 +00:00
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elif item.scalarTag in [yTagQuestionMark, yTagNull] and
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2016-01-14 18:58:38 +00:00
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hint == yTypeNull:
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2016-01-05 18:58:46 +00:00
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safeWrite("null")
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2016-01-24 19:53:51 +00:00
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elif item.scalarTag in [yTagQuestionMark, yTagInteger] and
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hint == yTypeInteger:
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safeWrite(item.scalarContent)
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2016-01-05 18:06:55 +00:00
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elif item.scalarTag in [yTagQuestionMark, yTagFloat] and
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2016-01-14 18:58:38 +00:00
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hint in [yTypeFloatInf, yTypeFloatNaN]:
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2016-01-05 18:58:46 +00:00
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raise newException(YamlPresenterJsonError,
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2016-01-05 18:06:55 +00:00
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"Infinity and not-a-number values cannot be presented as JSON!")
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2016-01-24 19:53:51 +00:00
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elif item.scalarTag in [yTagQuestionMark, yTagFloat] and
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hint == yTypeFloat:
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safeWrite(item.scalarContent)
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2015-12-29 17:22:55 +00:00
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else:
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2016-01-14 18:00:03 +00:00
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writeDoubleQuoted(item.scalarContent, target)
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2016-01-14 21:51:30 +00:00
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elif style == psCanonical or item.scalarContent.needsEscaping:
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2015-12-27 15:36:32 +00:00
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writeDoubleQuoted(item.scalarContent, target)
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else:
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2016-01-05 18:58:46 +00:00
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safeWrite(item.scalarContent)
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2015-12-27 15:36:32 +00:00
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of yamlAlias:
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2016-01-14 21:51:30 +00:00
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if style == psJson:
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2016-01-14 18:00:03 +00:00
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raise newException(YamlPresenterJsonError,
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"Alias not allowed in JSON output")
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2016-01-05 18:06:55 +00:00
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assert levels.len > 0
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2016-01-11 18:12:55 +00:00
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startItem(target, style, indentation, levels[levels.high], false)
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2016-01-05 18:58:46 +00:00
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try:
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target.write('*')
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target.write(cast[byte]('a') + cast[byte](item.aliasTarget))
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except:
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var e = newException(YamlPresenterOutputError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2015-12-27 15:36:32 +00:00
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of yamlStartSequence:
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var nextState: DumperState
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case style
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2016-01-14 21:51:30 +00:00
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of psDefault:
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2015-12-27 15:36:32 +00:00
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var length = 0
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while true:
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2016-01-05 18:58:46 +00:00
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try:
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let next = s()
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assert (not finished(s))
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cached.enqueue(next)
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case next.kind
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of yamlScalar:
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length += 2 + next.scalarContent.len
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of yamlAlias:
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length += 6
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of yamlEndSequence:
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break
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else:
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2016-01-24 10:44:10 +00:00
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length = high(int)
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2016-01-05 18:58:46 +00:00
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break
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2016-01-24 20:21:37 +00:00
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except Exception:
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2016-01-05 18:58:46 +00:00
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var e = newException(YamlPresenterStreamError, "")
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2016-01-24 17:24:09 +00:00
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e.parent = getCurrentException()
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2016-01-05 18:58:46 +00:00
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raise e
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2015-12-27 15:36:32 +00:00
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nextState = if length <= 60: dFlowSequenceStart else:
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dBlockSequenceItem
|
2016-01-14 21:51:30 +00:00
|
|
|
of psJson:
|
2016-01-07 10:58:33 +00:00
|
|
|
if levels.len > 0 and levels[levels.high] in
|
2016-01-11 18:12:55 +00:00
|
|
|
[dFlowMapStart, dFlowMapValue]:
|
2016-01-05 18:58:46 +00:00
|
|
|
raise newException(YamlPresenterJsonError,
|
2016-01-05 18:06:55 +00:00
|
|
|
"Cannot have sequence as map key in JSON output!")
|
|
|
|
nextState = dFlowSequenceStart
|
2016-01-14 21:51:30 +00:00
|
|
|
of psMinimal, psCanonical:
|
2015-12-27 15:36:32 +00:00
|
|
|
nextState = dFlowSequenceStart
|
2016-01-14 21:51:30 +00:00
|
|
|
of psBlockOnly:
|
2015-12-27 15:36:32 +00:00
|
|
|
nextState = dBlockSequenceItem
|
|
|
|
|
|
|
|
if levels.len == 0:
|
|
|
|
if nextState == dBlockSequenceItem:
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2015-12-27 15:36:32 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.seqTag, tagLib, item.seqAnchor)
|
|
|
|
else:
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2015-12-27 15:36:32 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.seqTag, tagLib, item.seqAnchor)
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite('\x0A')
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation += indentationStep
|
|
|
|
else:
|
2016-01-11 18:12:55 +00:00
|
|
|
startItem(target, style, indentation, levels[levels.high], true)
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2015-12-29 17:22:55 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.seqTag, tagLib, item.seqAnchor)
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation += indentationStep
|
|
|
|
|
|
|
|
if nextState == dFlowSequenceStart:
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite('[')
|
2016-01-14 21:51:30 +00:00
|
|
|
if levels.len > 0 and style in [psJson, psCanonical] and
|
2015-12-27 15:36:32 +00:00
|
|
|
levels[levels.high] in
|
2016-01-11 18:12:55 +00:00
|
|
|
[dBlockExplicitMapKey, dBlockMapValue,
|
|
|
|
dBlockImplicitMapKey, dBlockSequenceItem]:
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation += indentationStep
|
|
|
|
levels.add(nextState)
|
|
|
|
of yamlStartMap:
|
|
|
|
var nextState: DumperState
|
|
|
|
case style
|
2016-01-14 21:51:30 +00:00
|
|
|
of psDefault:
|
2016-01-11 18:53:19 +00:00
|
|
|
type mapParseState = enum
|
|
|
|
mpInitial, mpKey, mpValue, mpNeedBlock
|
|
|
|
var mps = mpInitial
|
|
|
|
while mps != mpNeedBlock:
|
2016-01-05 18:58:46 +00:00
|
|
|
try:
|
|
|
|
let next = s()
|
|
|
|
assert (not finished(s))
|
|
|
|
cached.enqueue(next)
|
|
|
|
case next.kind
|
2016-01-11 18:53:19 +00:00
|
|
|
of yamlScalar, yamlAlias:
|
|
|
|
case mps
|
|
|
|
of mpInitial: mps = mpKey
|
|
|
|
of mpKey: mps = mpValue
|
|
|
|
else: mps = mpNeedBlock
|
2016-01-05 18:58:46 +00:00
|
|
|
of yamlEndMap:
|
|
|
|
break
|
|
|
|
else:
|
2016-01-11 18:53:19 +00:00
|
|
|
mps = mpNeedBlock
|
2016-01-24 20:21:37 +00:00
|
|
|
except Exception:
|
2016-01-05 18:58:46 +00:00
|
|
|
var e = newException(YamlPresenterStreamError, "")
|
2016-01-24 17:24:09 +00:00
|
|
|
e.parent = getCurrentException()
|
2016-01-05 18:58:46 +00:00
|
|
|
raise e
|
2016-01-11 18:53:19 +00:00
|
|
|
nextState = if mps == mpNeedBlock: dBlockMapValue else:
|
|
|
|
dBlockInlineMap
|
2016-01-14 21:51:30 +00:00
|
|
|
of psMinimal:
|
2016-01-11 18:12:55 +00:00
|
|
|
nextState = dFlowMapStart
|
2016-01-14 21:51:30 +00:00
|
|
|
of psCanonical:
|
2016-01-11 18:12:55 +00:00
|
|
|
nextState = dFlowMapStart
|
2016-01-14 21:51:30 +00:00
|
|
|
of psJson:
|
2016-01-05 20:34:07 +00:00
|
|
|
if levels.len > 0 and levels[levels.high] in
|
2016-01-11 18:12:55 +00:00
|
|
|
[dFlowMapStart, dFlowMapValue]:
|
2016-01-05 18:58:46 +00:00
|
|
|
raise newException(YamlPresenterJsonError,
|
2016-01-05 18:06:55 +00:00
|
|
|
"Cannot have map as map key in JSON output!")
|
2016-01-11 18:12:55 +00:00
|
|
|
nextState = dFlowMapStart
|
2016-01-14 21:51:30 +00:00
|
|
|
of psBlockOnly:
|
2016-01-11 18:12:55 +00:00
|
|
|
nextState = dBlockMapValue
|
2015-12-27 15:36:32 +00:00
|
|
|
if levels.len == 0:
|
2016-01-11 18:12:55 +00:00
|
|
|
if nextState == dBlockMapValue:
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2015-12-27 15:36:32 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.mapTag, tagLib, item.mapAnchor)
|
|
|
|
else:
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite('\x0A')
|
2015-12-27 15:36:32 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.mapTag, tagLib, item.mapAnchor)
|
|
|
|
indentation += indentationStep
|
|
|
|
else:
|
2016-01-11 18:12:55 +00:00
|
|
|
if nextState in [dBlockMapValue, dBlockImplicitMapKey]:
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2015-12-27 15:36:32 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.mapTag, tagLib, item.mapAnchor)
|
2016-01-11 18:12:55 +00:00
|
|
|
startItem(target, style, indentation, levels[levels.high],
|
|
|
|
true)
|
2015-12-27 15:36:32 +00:00
|
|
|
else:
|
2016-01-11 18:12:55 +00:00
|
|
|
startItem(target, style, indentation, levels[levels.high],
|
|
|
|
true)
|
2016-01-14 21:51:30 +00:00
|
|
|
if style != psJson:
|
2015-12-27 15:36:32 +00:00
|
|
|
writeTagAndAnchor(target,
|
|
|
|
item.mapTag, tagLib, item.mapAnchor)
|
|
|
|
indentation += indentationStep
|
|
|
|
|
2016-01-11 18:12:55 +00:00
|
|
|
if nextState == dFlowMapStart:
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite('{')
|
2016-01-14 21:51:30 +00:00
|
|
|
if levels.len > 0 and style in [psJson, psCanonical] and
|
2015-12-27 15:36:32 +00:00
|
|
|
levels[levels.high] in
|
2016-01-11 18:12:55 +00:00
|
|
|
[dBlockExplicitMapKey, dBlockMapValue,
|
|
|
|
dBlockImplicitMapKey, dBlockSequenceItem]:
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation += indentationStep
|
|
|
|
levels.add(nextState)
|
|
|
|
|
|
|
|
of yamlEndSequence:
|
2016-01-05 18:06:55 +00:00
|
|
|
assert levels.len > 0
|
2015-12-27 15:36:32 +00:00
|
|
|
case levels.pop()
|
|
|
|
of dFlowSequenceItem:
|
|
|
|
case style
|
2016-01-14 21:51:30 +00:00
|
|
|
of psDefault, psMinimal, psBlockOnly:
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite(']')
|
2016-01-14 21:51:30 +00:00
|
|
|
of psJson, psCanonical:
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation -= indentationStep
|
2016-01-05 18:58:46 +00:00
|
|
|
try:
|
|
|
|
target.write('\x0A')
|
|
|
|
target.write(repeat(' ', indentation))
|
|
|
|
target.write(']')
|
|
|
|
except:
|
|
|
|
var e = newException(YamlPresenterOutputError, "")
|
2016-01-24 17:24:09 +00:00
|
|
|
e.parent = getCurrentException()
|
2016-01-05 18:58:46 +00:00
|
|
|
raise e
|
2015-12-27 15:36:32 +00:00
|
|
|
if levels.len == 0 or levels[levels.high] notin
|
2016-01-11 18:12:55 +00:00
|
|
|
[dBlockExplicitMapKey, dBlockMapValue,
|
|
|
|
dBlockImplicitMapKey, dBlockSequenceItem]:
|
2015-12-27 15:36:32 +00:00
|
|
|
continue
|
|
|
|
of dFlowSequenceStart:
|
2016-01-14 21:51:30 +00:00
|
|
|
if levels.len > 0 and style in [psJson, psCanonical] and
|
2015-12-27 15:36:32 +00:00
|
|
|
levels[levels.high] in
|
2016-01-11 18:12:55 +00:00
|
|
|
[dBlockExplicitMapKey, dBlockMapValue,
|
|
|
|
dBlockImplicitMapKey, dBlockSequenceItem]:
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation -= indentationStep
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite(']')
|
2015-12-27 15:36:32 +00:00
|
|
|
of dBlockSequenceItem:
|
|
|
|
discard
|
|
|
|
else:
|
2016-01-05 18:06:55 +00:00
|
|
|
assert false
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation -= indentationStep
|
|
|
|
of yamlEndMap:
|
2016-01-05 18:06:55 +00:00
|
|
|
assert levels.len > 0
|
2016-01-11 20:10:30 +00:00
|
|
|
let level = levels.pop()
|
|
|
|
case level
|
2016-01-11 18:12:55 +00:00
|
|
|
of dFlowMapValue:
|
2015-12-27 15:36:32 +00:00
|
|
|
case style
|
2016-01-14 21:51:30 +00:00
|
|
|
of psDefault, psMinimal, psBlockOnly:
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite('}')
|
2016-01-14 21:51:30 +00:00
|
|
|
of psJson, psCanonical:
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation -= indentationStep
|
2016-01-05 18:58:46 +00:00
|
|
|
try:
|
|
|
|
target.write('\x0A')
|
|
|
|
target.write(repeat(' ', indentation))
|
|
|
|
target.write('}')
|
|
|
|
except:
|
|
|
|
var e = newException(YamlPresenterOutputError, "")
|
2016-01-24 17:24:09 +00:00
|
|
|
e.parent = getCurrentException()
|
2016-01-05 18:58:46 +00:00
|
|
|
raise e
|
2015-12-27 15:36:32 +00:00
|
|
|
if levels.len == 0 or levels[levels.high] notin
|
2016-01-11 18:12:55 +00:00
|
|
|
[dBlockExplicitMapKey, dBlockMapValue,
|
|
|
|
dBlockImplicitMapKey, dBlockSequenceItem]:
|
2015-12-27 15:36:32 +00:00
|
|
|
continue
|
2016-01-11 18:12:55 +00:00
|
|
|
of dFlowMapStart:
|
2016-01-14 21:51:30 +00:00
|
|
|
if levels.len > 0 and style in [psJson, psCanonical] and
|
2015-12-27 15:36:32 +00:00
|
|
|
levels[levels.high] in
|
2016-01-11 18:12:55 +00:00
|
|
|
[dBlockExplicitMapKey, dBlockMapValue,
|
|
|
|
dBlockImplicitMapKey, dBlockSequenceItem]:
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation -= indentationStep
|
2016-01-05 18:58:46 +00:00
|
|
|
safeWrite('}')
|
2016-01-11 20:12:38 +00:00
|
|
|
of dBlockMapValue, dBlockInlineMap:
|
2015-12-27 15:36:32 +00:00
|
|
|
discard
|
|
|
|
else:
|
2016-01-05 18:06:55 +00:00
|
|
|
assert false
|
2015-12-27 15:36:32 +00:00
|
|
|
indentation -= indentationStep
|
|
|
|
of yamlEndDocument:
|
2016-01-05 18:58:46 +00:00
|
|
|
try:
|
|
|
|
let next = s()
|
|
|
|
if finished(s):
|
|
|
|
break
|
|
|
|
cached.enqueue(next)
|
2016-01-24 20:21:37 +00:00
|
|
|
except Exception:
|
2016-01-05 18:58:46 +00:00
|
|
|
var e = newException(YamlPresenterStreamError, "")
|
2016-01-24 17:24:09 +00:00
|
|
|
e.parent = getCurrentException()
|
2016-01-05 18:58:46 +00:00
|
|
|
raise e
|
|
|
|
safeWrite("...\x0A")
|
2015-12-27 15:36:32 +00:00
|
|
|
|
2016-01-14 21:51:30 +00:00
|
|
|
proc transform*(input: Stream, output: Stream, style: PresentationStyle,
|
2015-12-27 15:36:32 +00:00
|
|
|
indentationStep: int = 2) =
|
|
|
|
var
|
2016-01-24 10:44:10 +00:00
|
|
|
taglib = initExtendedTagLibrary()
|
|
|
|
parser = newYamlParser(tagLib)
|
2016-01-11 19:54:06 +00:00
|
|
|
events = parser.parse(input)
|
2016-01-24 17:24:09 +00:00
|
|
|
try:
|
|
|
|
if style == psCanonical:
|
|
|
|
var specificTagEvents = iterator(): YamlStreamEvent =
|
|
|
|
for e in events():
|
|
|
|
var event = e
|
|
|
|
case event.kind
|
|
|
|
of yamlStartDocument, yamlEndDocument, yamlEndMap,
|
|
|
|
yamlAlias, yamlEndSequence:
|
|
|
|
discard
|
|
|
|
of yamlStartMap:
|
|
|
|
if event.mapTag in [yTagQuestionMark,
|
|
|
|
yTagExclamationMark]:
|
|
|
|
event.mapTag = yTagMap
|
|
|
|
of yamlStartSequence:
|
|
|
|
if event.seqTag in [yTagQuestionMark,
|
|
|
|
yTagExclamationMark]:
|
|
|
|
event.seqTag = yTagSequence
|
|
|
|
of yamlScalar:
|
|
|
|
if event.scalarTag == yTagQuestionMark:
|
|
|
|
case guessType(event.scalarContent)
|
|
|
|
of yTypeInteger:
|
|
|
|
event.scalarTag = yTagInteger
|
|
|
|
of yTypeFloat, yTypeFloatInf, yTypeFloatNaN:
|
|
|
|
event.scalarTag = yTagFloat
|
|
|
|
of yTypeBoolTrue, yTypeBoolFalse:
|
|
|
|
event.scalarTag = yTagBoolean
|
|
|
|
of yTypeNull:
|
|
|
|
event.scalarTag = yTagNull
|
|
|
|
of yTypeUnknown:
|
|
|
|
event.scalarTag = yTagString
|
|
|
|
elif event.scalarTag == yTagExclamationMark:
|
2016-01-11 19:54:06 +00:00
|
|
|
event.scalarTag = yTagString
|
2016-01-24 17:24:09 +00:00
|
|
|
yield event
|
|
|
|
present(specificTagEvents, output, tagLib, style,
|
|
|
|
indentationStep)
|
|
|
|
else:
|
|
|
|
present(events, output, tagLib, style, indentationStep)
|
|
|
|
except YamlPresenterStreamError:
|
|
|
|
let e = getCurrentException()
|
2016-01-24 20:38:29 +00:00
|
|
|
if e.parent of IOError:
|
2016-01-24 17:24:09 +00:00
|
|
|
raise cast[ref IOError](e.parent)
|
2016-01-24 20:38:29 +00:00
|
|
|
elif e.parent of YamlParserError:
|
2016-01-24 17:24:09 +00:00
|
|
|
raise cast[ref YamlParserError](e.parent)
|
|
|
|
else:
|
|
|
|
# never happens
|
|
|
|
assert(false)
|
2016-01-27 14:18:01 +00:00
|
|
|
except YamlPresenterJsonError, YamlPresenterOutputError:
|
|
|
|
raise
|
2016-01-24 17:24:09 +00:00
|
|
|
except Exception:
|
|
|
|
# compiler bug: https://github.com/nim-lang/Nim/issues/3772
|
|
|
|
assert(false)
|