def __init__(self, stream, typeResolver=None):
try:
self.dictionary = dict
except:
self.dictionary = dumpDictionary
self.nestedDocs = NestedDocs(stream)
self.aliases = {}
if typeResolver:
self.typeResolver = typeResolver
else:
self.typeResolver = DefaultResolver()
def __init__(self, stream, typeResolver=None):
try:
self.dictionary = dict
except:
self.dictionary = dumpDictionary
self.nestedDocs = NestedDocs(stream)
self.aliases = {}
if typeResolver:
self.typeResolver = typeResolver
else:
self.typeResolver = DefaultResolver()
class Parser:
def __init__(self, stream, typeResolver=None):
try:
self.dictionary = dict
except:
self.dictionary = dumpDictionary
self.nestedDocs = NestedDocs(stream)
self.aliases = {}
if typeResolver:
self.typeResolver = typeResolver
else:
self.typeResolver = DefaultResolver()
def error(self, msg):
self.nestedDocs.error(msg, self.line)
def nestPop(self):
line = self.nestedDocs.pop()
if line is not None:
self.line = line
return 1
def value(self, indicator):
return getToken(indicator+"\s*(.*)", self.line)
def getNextDocument(self): raise "getNextDocument() deprecated--use next()"
def next(self):
line = self.nestedDocs.popDocSep()
indicator = getIndicator(line)
if indicator:
return self.parse_value(indicator)
if line:
self.nestedDocs.nestToNextLine()
return self.parseLines()
raise StopIteration
def __iter__(self): return self
def parseLines(self):
peekLine = self.nestedDocs.peek()
if peekLine:
if re.match("\s*-", peekLine):
return self.parse_collection([], self.parse_seq_line)
else:
return self.parse_collection(self.dictionary(), self.parse_map_line)
raise StopIteration
def parse_collection(self, items, lineParser):
while self.nestPop():
if self.line:
lineParser(items)
return items
def parse_seq_line(self, items):
value = self.value("-")
if value is not None:
items.append(self.parse_seq_value(value))
else:
self.error("missing '-' for seq")
def parse_map_line(self, items):
if (self.line == '?'):
self.parse_map_line_nested(items)
else:
self.parse_map_line_simple(items, self.line)
def parse_map_line_nested(self, items):
self.nestedDocs.nestToNextLine()
key = self.parseLines()
if self.nestPop():
value = self.value(':')
if value is not None:
items[tuple(key)] = self.parse_value(value)
return
self.error("key has no value for nested map")
def parse_map_line_simple(self, items, line):
map_item = key_value(line)
if map_item:
(key, value) = map_item
key = convertImplicit(key)
items[key] = self.parse_value(value)
else:
self.error("bad key for map")
def is_map(self, value):
# XXX - need real tokenizer
if len(value) == 0:
return 0
if value[0] == "'":
return 0
if re.search(':(\s|$)', value):
return 1
def parse_seq_value(self, value):
if self.is_map(value):
return self.parse_compressed_map(value)
else:
return self.parse_value(value)
def parse_compressed_map(self, value):
items = self.dictionary()
line = self.line
token = getToken("(\s*-\s*)", line)
self.nestedDocs.nestBySpecificAmount(len(token))
self.parse_map_line_simple(items, value)
return self.parse_collection(items, self.parse_map_line)
def parse_value(self, value):
(alias, value) = self.testForRepeatOfAlias(value)
if alias:
return value
(alias, value) = self.testForAlias(value)
value = self.parse_unaliased_value(value)
if alias:
self.aliases[alias] = value
return value
def parse_unaliased_value(self, value):
match = re.match(r"(!\S*)(.*)", value)
if match:
(url, value) = match.groups()
value = self.parse_untyped_value(value)
if url[:2] == '!!':
return self.typeResolver.resolveType(value, url)
else:
# XXX - allows syntax, but ignores it
return value
return self.parse_untyped_value(value)
def parseInlineArray(self, value):
if re.match("\s*\[", value):
return self.parseInline([], value, ']',
self.parseInlineArrayItem)
def parseInlineHash(self, value):
if re.match("\s*{", value):
return self.parseInline(self.dictionary(), value, '}',
self.parseInlineHashItem)
def parseInlineArrayItem(self, result, token):
return result.append(convertImplicit(token))
def parseInlineHashItem(self, result, token):
(key, value) = key_value(token)
result[key] = value
def parseInline(self, result, value, end_marker, itemMethod):
tokenizer = InlineTokenizer(value)
tokenizer.next()
while 1:
token = tokenizer.next()
if token == end_marker:
break
itemMethod(result, token)
return (1, result)
def parseSpecial(self, value):
productions = [
self.parseMultiLineScalar,
self.parseInlineHash,
self.parseInlineArray,
]
return tryProductions(productions, value)
def parse_untyped_value(self, value):
parse = self.parseSpecial(value)
if parse:
(ok, data) = parse
return data
token = getToken("(\S.*)", value)
if token:
lines = [token] + \
pruneTrailingEmpties(self.nestedDocs.popNestedLines())
return convertImplicit(joinLines(lines))
else:
self.nestedDocs.nestToNextLine()
return self.parseLines()
def parseNative(self, value):
return (1, convertImplicit(value))
def parseMultiLineScalar(self, value):
if value == '>':
return (1, self.parseFolded())
elif value == '|':
yaml.stream.SKIP_COMMENTS = False
i = joinLiteral(self.parseBlock())
yaml.stream.SKIP_COMMENTS = True
self.nestedDocs.commentEater.eatComments()
return (1, i)
elif value == '|+':
yaml.stream.SKIP_COMMENTS = False
i = joinLiteral(self.unprunedBlock())
yaml.stream.SKIP_COMMENTS = True
self.nestedDocs.commentEater.eatComments()
return (1, i)
def parseFolded(self):
data = self.parseBlock()
i = 0
resultString = ''
while i < len(data)-1:
resultString = resultString + data[i]
resultString = resultString + foldChar(data[i], data[i+1])
i = i + 1
return resultString + data[-1] + "\n"
def unprunedBlock(self):
self.nestedDocs.nestToNextLine()
data = []
while self.nestPop():
data.append(self.line)
return data
def parseBlock(self):
return pruneTrailingEmpties(self.unprunedBlock())
def testForAlias(self, value):
match = re.match("&(\S*)\s*(.*)", value)
if match:
return match.groups()
return (None, value)
def testForRepeatOfAlias(self, value):
match = re.match("\*(\S*)", value)
if match:
alias = match.groups()[0]
if self.aliases.has_key(alias):
return (alias, self.aliases[alias])
else:
self.error("Unknown alias")
return (None, value)
class Parser:
def __init__(self, stream, typeResolver=None):
try:
self.dictionary = dict
except:
self.dictionary = dumpDictionary
self.nestedDocs = NestedDocs(stream)
self.aliases = {}
if typeResolver:
self.typeResolver = typeResolver
else:
self.typeResolver = DefaultResolver()
def error(self, msg):
self.nestedDocs.error(msg, self.line)
def nestPop(self):
line = self.nestedDocs.pop()
if line is not None:
self.line = line
return 1
def value(self, indicator):
return getToken(indicator+"\s*(.*)", self.line)
def getNextDocument(self): raise "getNextDocument() deprecated--use next()"
def next(self):
line = self.nestedDocs.popDocSep()
indicator = getIndicator(line)
if indicator:
return self.parse_value(indicator)
if line:
self.nestedDocs.nestToNextLine()
return self.parseLines()
raise StopIteration
def __iter__(self): return self
def parseLines(self):
peekLine = self.nestedDocs.peek()
if peekLine:
if re.match("\s*-", peekLine):
return self.parse_collection([], self.parse_seq_line)
else:
return self.parse_collection(self.dictionary(), self.parse_map_line)
raise StopIteration
def parse_collection(self, items, lineParser):
while self.nestPop():
if self.line:
lineParser(items)
return items
def parse_seq_line(self, items):
value = self.value("-")
if value is not None:
items.append(self.parse_seq_value(value))
else:
self.error("missing '-' for seq")
def parse_map_line(self, items):
if (self.line == '?'):
self.parse_map_line_nested(items)
else:
self.parse_map_line_simple(items, self.line)
def parse_map_line_nested(self, items):
self.nestedDocs.nestToNextLine()
key = self.parseLines()
if self.nestPop():
value = self.value(':')
if value is not None:
items[tuple(key)] = self.parse_value(value)
return
self.error("key has no value for nested map")
def parse_map_line_simple(self, items, line):
map_item = self.key_value(line)
if map_item:
(key, value) = map_item
key = convertImplicit(key)
if items.has_key(key):
self.error("Duplicate key "+key)
items[key] = self.parse_value(value)
else:
self.error("bad key for map")
def is_map(self, value):
# XXX - need real tokenizer
if len(value) == 0:
return 0
if value[0] == "'":
return 0
if re.search(':(\s|$)', value):
return 1
def parse_seq_value(self, value):
if self.is_map(value):
return self.parse_compressed_map(value)
else:
return self.parse_value(value)
def parse_compressed_map(self, value):
items = self.dictionary()
line = self.line
token = getToken("(\s*-\s*)", line)
self.nestedDocs.nestBySpecificAmount(len(token))
self.parse_map_line_simple(items, value)
return self.parse_collection(items, self.parse_map_line)
def parse_value(self, value):
(alias, value) = self.testForRepeatOfAlias(value)
if alias:
return value
(alias, value) = self.testForAlias(value)
value = self.parse_unaliased_value(value)
if alias:
self.aliases[alias] = value
return value
def parse_unaliased_value(self, value):
match = re.match(r"(!\S*)(.*)", value)
if match:
(url, value) = match.groups()
value = self.parse_untyped_value(value)
if url[:2] == '!!':
return self.typeResolver.resolveType(value, url)
else:
# XXX - allows syntax, but ignores it
return value
return self.parse_untyped_value(value)
def parseInlineArray(self, value):
if re.match("\s*\[", value):
return self.parseInline([], value, ']',
self.parseInlineArrayItem)
def parseInlineHash(self, value):
if re.match("\s*{", value):
return self.parseInline(self.dictionary(), value, '}',
self.parseInlineHashItem)
def parseInlineArrayItem(self, result, token):
return result.append(convertImplicit(token))
def parseInlineHashItem(self, result, token):
(key, value) = self.key_value(token)
result[key] = value
def parseInline(self, result, value, end_marker, itemMethod):
tokenizer = InlineTokenizer(value)
tokenizer.next()
while 1:
token = tokenizer.next()
if token == end_marker:
break
itemMethod(result, token)
return (1, result)
def parseSpecial(self, value):
productions = [
self.parseMultiLineScalar,
self.parseInlineHash,
self.parseInlineArray,
]
return tryProductions(productions, value)
def parse_untyped_value(self, value):
parse = self.parseSpecial(value)
if parse:
(ok, data) = parse
return data
token = getToken("(\S.*)", value)
if token:
lines = [token] + \
pruneTrailingEmpties(self.nestedDocs.popNestedLines())
return convertImplicit(joinLines(lines))
else:
self.nestedDocs.nestToNextLine()
return self.parseLines()
def parseNative(self, value):
return (1, convertImplicit(value))
def parseMultiLineScalar(self, value):
if value == '>':
return (1, self.parseFolded())
elif value == '|':
return (1, joinLiteral(self.parseBlock()))
elif value == '|+':
return (1, joinLiteral(self.unprunedBlock()))
def parseFolded(self):
data = self.parseBlock()
i = 0
resultString = ''
while i < len(data)-1:
resultString = resultString + data[i]
resultString = resultString + foldChar(data[i], data[i+1])
i = i + 1
return resultString + data[-1] + "\n"
def unprunedBlock(self):
self.nestedDocs.nestToNextLine()
data = []
while self.nestPop():
data.append(self.line)
return data
def parseBlock(self):
return pruneTrailingEmpties(self.unprunedBlock())
def testForAlias(self, value):
match = re.match("&(\S*)\s*(.*)", value)
if match:
return match.groups()
return (None, value)
def testForRepeatOfAlias(self, value):
match = re.match("\*(\S+)", value)
if match:
alias = match.groups()[0]
if self.aliases.has_key(alias):
return (alias, self.aliases[alias])
else:
self.error("Unknown alias")
return (None, value)
def key_value(self, str):
if str[-1] == ' ':
self.error("Trailing spaces not allowed without quotes.")
# XXX This allows mis-balanced " vs. ' stuff
match = re.match("[\"'](.+)[\"']\s*:\s*(.*)", str)
if match:
(key, value) = match.groups()
return (key, value)
match = re.match("(.+?)\s*:\s*(.*)", str)
if match:
(key, value) = match.groups()
if len(value) and value[0] == '#':
value = ''
return (key, value)