--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/thirdparty/google_appengine/lib/yaml/ext/_yaml.pyx Tue Aug 26 21:49:54 2008 +0000
@@ -0,0 +1,1344 @@
+
+import yaml
+
+def get_version_string():
+ return yaml_get_version_string()
+
+def get_version():
+ cdef int major, minor, patch
+ yaml_get_version(&major, &minor, &patch)
+ return (major, minor, patch)
+
+#Mark = yaml.error.Mark
+YAMLError = yaml.error.YAMLError
+ReaderError = yaml.reader.ReaderError
+ScannerError = yaml.scanner.ScannerError
+ParserError = yaml.parser.ParserError
+ComposerError = yaml.composer.ComposerError
+ConstructorError = yaml.constructor.ConstructorError
+EmitterError = yaml.emitter.EmitterError
+SerializerError = yaml.serializer.SerializerError
+RepresenterError = yaml.representer.RepresenterError
+
+StreamStartToken = yaml.tokens.StreamStartToken
+StreamEndToken = yaml.tokens.StreamEndToken
+DirectiveToken = yaml.tokens.DirectiveToken
+DocumentStartToken = yaml.tokens.DocumentStartToken
+DocumentEndToken = yaml.tokens.DocumentEndToken
+BlockSequenceStartToken = yaml.tokens.BlockSequenceStartToken
+BlockMappingStartToken = yaml.tokens.BlockMappingStartToken
+BlockEndToken = yaml.tokens.BlockEndToken
+FlowSequenceStartToken = yaml.tokens.FlowSequenceStartToken
+FlowMappingStartToken = yaml.tokens.FlowMappingStartToken
+FlowSequenceEndToken = yaml.tokens.FlowSequenceEndToken
+FlowMappingEndToken = yaml.tokens.FlowMappingEndToken
+KeyToken = yaml.tokens.KeyToken
+ValueToken = yaml.tokens.ValueToken
+BlockEntryToken = yaml.tokens.BlockEntryToken
+FlowEntryToken = yaml.tokens.FlowEntryToken
+AliasToken = yaml.tokens.AliasToken
+AnchorToken = yaml.tokens.AnchorToken
+TagToken = yaml.tokens.TagToken
+ScalarToken = yaml.tokens.ScalarToken
+
+StreamStartEvent = yaml.events.StreamStartEvent
+StreamEndEvent = yaml.events.StreamEndEvent
+DocumentStartEvent = yaml.events.DocumentStartEvent
+DocumentEndEvent = yaml.events.DocumentEndEvent
+AliasEvent = yaml.events.AliasEvent
+ScalarEvent = yaml.events.ScalarEvent
+SequenceStartEvent = yaml.events.SequenceStartEvent
+SequenceEndEvent = yaml.events.SequenceEndEvent
+MappingStartEvent = yaml.events.MappingStartEvent
+MappingEndEvent = yaml.events.MappingEndEvent
+
+ScalarNode = yaml.nodes.ScalarNode
+SequenceNode = yaml.nodes.SequenceNode
+MappingNode = yaml.nodes.MappingNode
+
+cdef class Mark:
+ cdef readonly object name
+ cdef readonly int index
+ cdef readonly int line
+ cdef readonly int column
+ cdef readonly buffer
+ cdef readonly pointer
+
+ def __init__(self, object name, int index, int line, int column,
+ object buffer, object pointer):
+ self.name = name
+ self.index = index
+ self.line = line
+ self.column = column
+ self.buffer = buffer
+ self.pointer = pointer
+
+ def get_snippet(self):
+ return None
+
+ def __str__(self):
+ where = " in \"%s\", line %d, column %d" \
+ % (self.name, self.line+1, self.column+1)
+ return where
+
+#class YAMLError(Exception):
+# pass
+#
+#class MarkedYAMLError(YAMLError):
+#
+# def __init__(self, context=None, context_mark=None,
+# problem=None, problem_mark=None, note=None):
+# self.context = context
+# self.context_mark = context_mark
+# self.problem = problem
+# self.problem_mark = problem_mark
+# self.note = note
+#
+# def __str__(self):
+# lines = []
+# if self.context is not None:
+# lines.append(self.context)
+# if self.context_mark is not None \
+# and (self.problem is None or self.problem_mark is None
+# or self.context_mark.name != self.problem_mark.name
+# or self.context_mark.line != self.problem_mark.line
+# or self.context_mark.column != self.problem_mark.column):
+# lines.append(str(self.context_mark))
+# if self.problem is not None:
+# lines.append(self.problem)
+# if self.problem_mark is not None:
+# lines.append(str(self.problem_mark))
+# if self.note is not None:
+# lines.append(self.note)
+# return '\n'.join(lines)
+#
+#class ReaderError(YAMLError):
+#
+# def __init__(self, name, position, character, encoding, reason):
+# self.name = name
+# self.character = character
+# self.position = position
+# self.encoding = encoding
+# self.reason = reason
+#
+# def __str__(self):
+# if isinstance(self.character, str):
+# return "'%s' codec can't decode byte #x%02x: %s\n" \
+# " in \"%s\", position %d" \
+# % (self.encoding, ord(self.character), self.reason,
+# self.name, self.position)
+# else:
+# return "unacceptable character #x%04x: %s\n" \
+# " in \"%s\", position %d" \
+# % (ord(self.character), self.reason,
+# self.name, self.position)
+#
+#class ScannerError(MarkedYAMLError):
+# pass
+#
+#class ParserError(MarkedYAMLError):
+# pass
+#
+#class EmitterError(YAMLError):
+# pass
+#
+#cdef class Token:
+# cdef readonly Mark start_mark
+# cdef readonly Mark end_mark
+# def __init__(self, Mark start_mark, Mark end_mark):
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class StreamStartToken(Token):
+# cdef readonly object encoding
+# def __init__(self, Mark start_mark, Mark end_mark, encoding):
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+# self.encoding = encoding
+#
+#cdef class StreamEndToken(Token):
+# pass
+#
+#cdef class DirectiveToken(Token):
+# cdef readonly object name
+# cdef readonly object value
+# def __init__(self, name, value, Mark start_mark, Mark end_mark):
+# self.name = name
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class DocumentStartToken(Token):
+# pass
+#
+#cdef class DocumentEndToken(Token):
+# pass
+#
+#cdef class BlockSequenceStartToken(Token):
+# pass
+#
+#cdef class BlockMappingStartToken(Token):
+# pass
+#
+#cdef class BlockEndToken(Token):
+# pass
+#
+#cdef class FlowSequenceStartToken(Token):
+# pass
+#
+#cdef class FlowMappingStartToken(Token):
+# pass
+#
+#cdef class FlowSequenceEndToken(Token):
+# pass
+#
+#cdef class FlowMappingEndToken(Token):
+# pass
+#
+#cdef class KeyToken(Token):
+# pass
+#
+#cdef class ValueToken(Token):
+# pass
+#
+#cdef class BlockEntryToken(Token):
+# pass
+#
+#cdef class FlowEntryToken(Token):
+# pass
+#
+#cdef class AliasToken(Token):
+# cdef readonly object value
+# def __init__(self, value, Mark start_mark, Mark end_mark):
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class AnchorToken(Token):
+# cdef readonly object value
+# def __init__(self, value, Mark start_mark, Mark end_mark):
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class TagToken(Token):
+# cdef readonly object value
+# def __init__(self, value, Mark start_mark, Mark end_mark):
+# self.value = value
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+#
+#cdef class ScalarToken(Token):
+# cdef readonly object value
+# cdef readonly object plain
+# cdef readonly object style
+# def __init__(self, value, plain, Mark start_mark, Mark end_mark, style=None):
+# self.value = value
+# self.plain = plain
+# self.start_mark = start_mark
+# self.end_mark = end_mark
+# self.style = style
+
+cdef class CParser:
+
+ cdef yaml_parser_t parser
+ cdef yaml_event_t parsed_event
+
+ cdef object stream
+ cdef object stream_name
+ cdef object current_token
+ cdef object current_event
+ cdef object anchors
+
+ def __init__(self, stream):
+ if yaml_parser_initialize(&self.parser) == 0:
+ raise MemoryError
+ self.parsed_event.type = YAML_NO_EVENT
+ if hasattr(stream, 'read'):
+ self.stream = stream
+ try:
+ self.stream_name = stream.name
+ except AttributeError:
+ self.stream_name = '<file>'
+ yaml_parser_set_input(&self.parser, input_handler, <void *>self)
+ else:
+ if PyUnicode_CheckExact(stream) != 0:
+ stream = PyUnicode_AsUTF8String(stream)
+ self.stream_name = '<unicode string>'
+ else:
+ self.stream_name = '<string>'
+ if PyString_CheckExact(stream) == 0:
+ raise TypeError("a string or stream input is required")
+ self.stream = stream
+ yaml_parser_set_input_string(&self.parser, PyString_AS_STRING(stream), PyString_GET_SIZE(stream))
+ self.current_token = None
+ self.current_event = None
+ self.anchors = {}
+
+ def __dealloc__(self):
+ yaml_parser_delete(&self.parser)
+ yaml_event_delete(&self.parsed_event)
+
+ cdef object _parser_error(self):
+ if self.parser.error == YAML_MEMORY_ERROR:
+ raise MemoryError
+ elif self.parser.error == YAML_READER_ERROR:
+ raise ReaderError(self.stream_name, self.parser.problem_offset,
+ self.parser.problem_value, '?', self.parser.problem)
+ elif self.parser.error == YAML_SCANNER_ERROR \
+ or self.parser.error == YAML_PARSER_ERROR:
+ context_mark = None
+ problem_mark = None
+ if self.parser.context != NULL:
+ context_mark = Mark(self.stream_name,
+ self.parser.context_mark.index,
+ self.parser.context_mark.line,
+ self.parser.context_mark.column, None, None)
+ if self.parser.problem != NULL:
+ problem_mark = Mark(self.stream_name,
+ self.parser.problem_mark.index,
+ self.parser.problem_mark.line,
+ self.parser.problem_mark.column, None, None)
+ if self.parser.error == YAML_SCANNER_ERROR:
+ if self.parser.context != NULL:
+ return ScannerError(self.parser.context, context_mark,
+ self.parser.problem, problem_mark)
+ else:
+ return ScannerError(None, None,
+ self.parser.problem, problem_mark)
+ else:
+ if self.parser.context != NULL:
+ return ParserError(self.parser.context, context_mark,
+ self.parser.problem, problem_mark)
+ else:
+ return ParserError(None, None,
+ self.parser.problem, problem_mark)
+ raise ValueError("no parser error")
+
+ def raw_scan(self):
+ cdef yaml_token_t token
+ cdef int done
+ cdef int count
+ count = 0
+ done = 0
+ while done == 0:
+ if yaml_parser_scan(&self.parser, &token) == 0:
+ error = self._parser_error()
+ raise error
+ if token.type == YAML_NO_TOKEN:
+ done = 1
+ else:
+ count = count+1
+ yaml_token_delete(&token)
+ return count
+
+ cdef object _scan(self):
+ cdef yaml_token_t token
+ if yaml_parser_scan(&self.parser, &token) == 0:
+ error = self._parser_error()
+ raise error
+ token_object = self._token_to_object(&token)
+ yaml_token_delete(&token)
+ return token_object
+
+ cdef object _token_to_object(self, yaml_token_t *token):
+ start_mark = Mark(self.stream_name,
+ token.start_mark.index,
+ token.start_mark.line,
+ token.start_mark.column,
+ None, None)
+ end_mark = Mark(self.stream_name,
+ token.end_mark.index,
+ token.end_mark.line,
+ token.end_mark.column,
+ None, None)
+ if token.type == YAML_NO_TOKEN:
+ return None
+ elif token.type == YAML_STREAM_START_TOKEN:
+ encoding = None
+ if token.data.stream_start.encoding == YAML_UTF8_ENCODING:
+ encoding = "utf-8"
+ elif token.data.stream_start.encoding == YAML_UTF16LE_ENCODING:
+ encoding = "utf-16-le"
+ elif token.data.stream_start.encoding == YAML_UTF16BE_ENCODING:
+ encoding = "utf-16-be"
+ return StreamStartToken(start_mark, end_mark, encoding)
+ elif token.type == YAML_STREAM_END_TOKEN:
+ return StreamEndToken(start_mark, end_mark)
+ elif token.type == YAML_VERSION_DIRECTIVE_TOKEN:
+ return DirectiveToken("YAML",
+ (token.data.version_directive.major,
+ token.data.version_directive.minor),
+ start_mark, end_mark)
+ elif token.type == YAML_TAG_DIRECTIVE_TOKEN:
+ return DirectiveToken("TAG",
+ (token.data.tag_directive.handle,
+ token.data.tag_directive.prefix),
+ start_mark, end_mark)
+ elif token.type == YAML_DOCUMENT_START_TOKEN:
+ return DocumentStartToken(start_mark, end_mark)
+ elif token.type == YAML_DOCUMENT_END_TOKEN:
+ return DocumentEndToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_SEQUENCE_START_TOKEN:
+ return BlockSequenceStartToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_MAPPING_START_TOKEN:
+ return BlockMappingStartToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_END_TOKEN:
+ return BlockEndToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_SEQUENCE_START_TOKEN:
+ return FlowSequenceStartToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_SEQUENCE_END_TOKEN:
+ return FlowSequenceEndToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_MAPPING_START_TOKEN:
+ return FlowMappingStartToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_MAPPING_END_TOKEN:
+ return FlowMappingEndToken(start_mark, end_mark)
+ elif token.type == YAML_BLOCK_ENTRY_TOKEN:
+ return BlockEntryToken(start_mark, end_mark)
+ elif token.type == YAML_FLOW_ENTRY_TOKEN:
+ return FlowEntryToken(start_mark, end_mark)
+ elif token.type == YAML_KEY_TOKEN:
+ return KeyToken(start_mark, end_mark)
+ elif token.type == YAML_VALUE_TOKEN:
+ return ValueToken(start_mark, end_mark)
+ elif token.type == YAML_ALIAS_TOKEN:
+ value = PyUnicode_DecodeUTF8(token.data.alias.value,
+ strlen(token.data.alias.value), 'strict')
+ return AliasToken(value, start_mark, end_mark)
+ elif token.type == YAML_ANCHOR_TOKEN:
+ value = PyUnicode_DecodeUTF8(token.data.anchor.value,
+ strlen(token.data.anchor.value), 'strict')
+ return AnchorToken(value, start_mark, end_mark)
+ elif token.type == YAML_TAG_TOKEN:
+ handle = PyUnicode_DecodeUTF8(token.data.tag.handle,
+ strlen(token.data.tag.handle), 'strict')
+ suffix = PyUnicode_DecodeUTF8(token.data.tag.suffix,
+ strlen(token.data.tag.suffix), 'strict')
+ if not handle:
+ handle = None
+ return TagToken((handle, suffix), start_mark, end_mark)
+ elif token.type == YAML_SCALAR_TOKEN:
+ value = PyUnicode_DecodeUTF8(token.data.scalar.value,
+ token.data.scalar.length, 'strict')
+ plain = False
+ style = None
+ if token.data.scalar.style == YAML_PLAIN_SCALAR_STYLE:
+ plain = True
+ style = ''
+ elif token.data.scalar.style == YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ style = '\''
+ elif token.data.scalar.style == YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ style = '"'
+ elif token.data.scalar.style == YAML_LITERAL_SCALAR_STYLE:
+ style = '|'
+ elif token.data.scalar.style == YAML_FOLDED_SCALAR_STYLE:
+ style = '>'
+ return ScalarToken(value, plain,
+ start_mark, end_mark, style)
+ else:
+ raise ValueError("unknown token type")
+
+ def get_token(self):
+ if self.current_token is not None:
+ value = self.current_token
+ self.current_token = None
+ else:
+ value = self._scan()
+ return value
+
+ def peek_token(self):
+ if self.current_token is None:
+ self.current_token = self._scan()
+ return self.current_token
+
+ def check_token(self, *choices):
+ if self.current_token is None:
+ self.current_token = self._scan()
+ if self.current_token is None:
+ return False
+ if not choices:
+ return True
+ token_class = self.current_token.__class__
+ for choice in choices:
+ if token_class is choice:
+ return True
+ return False
+
+ def raw_parse(self):
+ cdef yaml_event_t event
+ cdef int done
+ cdef int count
+ count = 0
+ done = 0
+ while done == 0:
+ if yaml_parser_parse(&self.parser, &event) == 0:
+ error = self._parser_error()
+ raise error
+ if event.type == YAML_NO_EVENT:
+ done = 1
+ else:
+ count = count+1
+ yaml_event_delete(&event)
+ return count
+
+ cdef object _parse(self):
+ cdef yaml_event_t event
+ if yaml_parser_parse(&self.parser, &event) == 0:
+ error = self._parser_error()
+ raise error
+ event_object = self._event_to_object(&event)
+ yaml_event_delete(&event)
+ return event_object
+
+ cdef object _event_to_object(self, yaml_event_t *event):
+ cdef yaml_tag_directive_t *tag_directive
+ start_mark = Mark(self.stream_name,
+ event.start_mark.index,
+ event.start_mark.line,
+ event.start_mark.column,
+ None, None)
+ end_mark = Mark(self.stream_name,
+ event.end_mark.index,
+ event.end_mark.line,
+ event.end_mark.column,
+ None, None)
+ if event.type == YAML_NO_EVENT:
+ return None
+ elif event.type == YAML_STREAM_START_EVENT:
+ encoding = None
+ if event.data.stream_start.encoding == YAML_UTF8_ENCODING:
+ encoding = "utf-8"
+ elif event.data.stream_start.encoding == YAML_UTF16LE_ENCODING:
+ encoding = "utf-16-le"
+ elif event.data.stream_start.encoding == YAML_UTF16BE_ENCODING:
+ encoding = "utf-16-be"
+ return StreamStartEvent(start_mark, end_mark, encoding)
+ elif event.type == YAML_STREAM_END_EVENT:
+ return StreamEndEvent(start_mark, end_mark)
+
+ elif event.type == YAML_DOCUMENT_START_EVENT:
+ explicit = False
+ if event.data.document_start.implicit == 0:
+ explicit = True
+ version = None
+ if event.data.document_start.version_directive != NULL:
+ version = (event.data.document_start.version_directive.major,
+ event.data.document_start.version_directive.minor)
+ tags = None
+ if event.data.document_start.tag_directives.start != NULL:
+ tags = {}
+ tag_directive = event.data.document_start.tag_directives.start
+ while tag_directive != event.data.document_start.tag_directives.end:
+ handle = PyUnicode_DecodeUTF8(tag_directive.handle,
+ strlen(tag_directive.handle), 'strict')
+ prefix = PyUnicode_DecodeUTF8(tag_directive.prefix,
+ strlen(tag_directive.prefix), 'strict')
+ tags[handle] = prefix
+ tag_directive = tag_directive+1
+ return DocumentStartEvent(start_mark, end_mark,
+ explicit, version, tags)
+ elif event.type == YAML_DOCUMENT_END_EVENT:
+ explicit = False
+ if event.data.document_end.implicit == 0:
+ explicit = True
+ return DocumentEndEvent(start_mark, end_mark, explicit)
+ elif event.type == YAML_ALIAS_EVENT:
+ anchor = PyUnicode_DecodeUTF8(event.data.alias.anchor,
+ strlen(event.data.alias.anchor), 'strict')
+ return AliasEvent(anchor, start_mark, end_mark)
+ elif event.type == YAML_SCALAR_EVENT:
+ anchor = None
+ if event.data.scalar.anchor != NULL:
+ anchor = PyUnicode_DecodeUTF8(event.data.scalar.anchor,
+ strlen(event.data.scalar.anchor), 'strict')
+ tag = None
+ if event.data.scalar.tag != NULL:
+ tag = PyUnicode_DecodeUTF8(event.data.scalar.tag,
+ strlen(event.data.scalar.tag), 'strict')
+ value = PyUnicode_DecodeUTF8(event.data.scalar.value,
+ event.data.scalar.length, 'strict')
+ plain_implicit = False
+ if event.data.scalar.plain_implicit == 1:
+ plain_implicit = True
+ quoted_implicit = False
+ if event.data.scalar.quoted_implicit == 1:
+ quoted_implicit = True
+ style = None
+ if event.data.scalar.style == YAML_PLAIN_SCALAR_STYLE:
+ style = ''
+ elif event.data.scalar.style == YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ style = '\''
+ elif event.data.scalar.style == YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ style = '"'
+ elif event.data.scalar.style == YAML_LITERAL_SCALAR_STYLE:
+ style = '|'
+ elif event.data.scalar.style == YAML_FOLDED_SCALAR_STYLE:
+ style = '>'
+ return ScalarEvent(anchor, tag,
+ (plain_implicit, quoted_implicit),
+ value, start_mark, end_mark, style)
+ elif event.type == YAML_SEQUENCE_START_EVENT:
+ anchor = None
+ if event.data.sequence_start.anchor != NULL:
+ anchor = PyUnicode_DecodeUTF8(event.data.sequence_start.anchor,
+ strlen(event.data.sequence_start.anchor), 'strict')
+ tag = None
+ if event.data.sequence_start.tag != NULL:
+ tag = PyUnicode_DecodeUTF8(event.data.sequence_start.tag,
+ strlen(event.data.sequence_start.tag), 'strict')
+ implicit = False
+ if event.data.sequence_start.implicit == 1:
+ implicit = True
+ flow_style = None
+ if event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE:
+ flow_style = True
+ elif event.data.sequence_start.style == YAML_BLOCK_SEQUENCE_STYLE:
+ flow_style = False
+ return SequenceStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style)
+ elif event.type == YAML_MAPPING_START_EVENT:
+ anchor = None
+ if event.data.mapping_start.anchor != NULL:
+ anchor = PyUnicode_DecodeUTF8(event.data.mapping_start.anchor,
+ strlen(event.data.mapping_start.anchor), 'strict')
+ tag = None
+ if event.data.mapping_start.tag != NULL:
+ tag = PyUnicode_DecodeUTF8(event.data.mapping_start.tag,
+ strlen(event.data.mapping_start.tag), 'strict')
+ implicit = False
+ if event.data.mapping_start.implicit == 1:
+ implicit = True
+ flow_style = None
+ if event.data.mapping_start.style == YAML_FLOW_SEQUENCE_STYLE:
+ flow_style = True
+ elif event.data.mapping_start.style == YAML_BLOCK_SEQUENCE_STYLE:
+ flow_style = False
+ return MappingStartEvent(anchor, tag, implicit,
+ start_mark, end_mark, flow_style)
+ elif event.type == YAML_SEQUENCE_END_EVENT:
+ return SequenceEndEvent(start_mark, end_mark)
+ elif event.type == YAML_MAPPING_END_EVENT:
+ return MappingEndEvent(start_mark, end_mark)
+
+ else:
+ raise ValueError("unknown token type")
+
+ def get_event(self):
+ if self.current_event is not None:
+ value = self.current_event
+ self.current_event = None
+ else:
+ value = self._parse()
+ return value
+
+ def peek_event(self):
+ if self.current_event is None:
+ self.current_event = self._parse()
+ return self.current_event
+
+ def check_event(self, *choices):
+ if self.current_event is None:
+ self.current_event = self._parse()
+ if self.current_event is None:
+ return False
+ if not choices:
+ return True
+ event_class = self.current_event.__class__
+ for choice in choices:
+ if event_class is choice:
+ return True
+ return False
+
+ def check_node(self):
+ self._parse_next_event()
+ if self.parsed_event.type == YAML_STREAM_START_EVENT:
+ yaml_event_delete(&self.parsed_event)
+ self._parse_next_event()
+ if self.parsed_event.type != YAML_STREAM_END_EVENT:
+ return True
+ return False
+
+ def get_node(self):
+ self._parse_next_event()
+ if self.parsed_event.type != YAML_STREAM_END_EVENT:
+ return self._compose_document()
+
+ cdef object _compose_document(self):
+ yaml_event_delete(&self.parsed_event)
+ node = self._compose_node(None, None)
+ self._parse_next_event()
+ yaml_event_delete(&self.parsed_event)
+ self.anchors = {}
+ return node
+
+ cdef object _compose_node(self, object parent, object index):
+ self._parse_next_event()
+ if self.parsed_event.type == YAML_ALIAS_EVENT:
+ anchor = PyUnicode_DecodeUTF8(self.parsed_event.data.alias.anchor,
+ strlen(self.parsed_event.data.alias.anchor), 'strict')
+ if anchor not in self.anchors:
+ mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ raise ComposerError(None, None, "found undefined alias", mark)
+ yaml_event_delete(&self.parsed_event)
+ return self.anchors[anchor]
+ anchor = None
+ if self.parsed_event.type == YAML_SCALAR_EVENT \
+ and self.parsed_event.data.scalar.anchor != NULL:
+ anchor = PyUnicode_DecodeUTF8(self.parsed_event.data.scalar.anchor,
+ strlen(self.parsed_event.data.scalar.anchor), 'strict')
+ elif self.parsed_event.type == YAML_SEQUENCE_START_EVENT \
+ and self.parsed_event.data.sequence_start.anchor != NULL:
+ anchor = PyUnicode_DecodeUTF8(self.parsed_event.data.sequence_start.anchor,
+ strlen(self.parsed_event.data.sequence_start.anchor), 'strict')
+ elif self.parsed_event.type == YAML_MAPPING_START_EVENT \
+ and self.parsed_event.data.mapping_start.anchor != NULL:
+ anchor = PyUnicode_DecodeUTF8(self.parsed_event.data.mapping_start.anchor,
+ strlen(self.parsed_event.data.mapping_start.anchor), 'strict')
+ if anchor is not None:
+ if anchor in self.anchors:
+ mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ raise ComposerError("found duplicate anchor; first occurence",
+ self.anchors[anchor].start_mark, "second occurence", mark)
+ self.descend_resolver(parent, index)
+ if self.parsed_event.type == YAML_SCALAR_EVENT:
+ node = self._compose_scalar_node(anchor)
+ elif self.parsed_event.type == YAML_SEQUENCE_START_EVENT:
+ node = self._compose_sequence_node(anchor)
+ elif self.parsed_event.type == YAML_MAPPING_START_EVENT:
+ node = self._compose_mapping_node(anchor)
+ self.ascend_resolver()
+ return node
+
+ cdef _compose_scalar_node(self, object anchor):
+ start_mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ end_mark = Mark(self.stream_name,
+ self.parsed_event.end_mark.index,
+ self.parsed_event.end_mark.line,
+ self.parsed_event.end_mark.column,
+ None, None)
+ value = PyUnicode_DecodeUTF8(self.parsed_event.data.scalar.value,
+ self.parsed_event.data.scalar.length, 'strict')
+ plain_implicit = False
+ if self.parsed_event.data.scalar.plain_implicit == 1:
+ plain_implicit = True
+ quoted_implicit = False
+ if self.parsed_event.data.scalar.quoted_implicit == 1:
+ quoted_implicit = True
+ if self.parsed_event.data.scalar.tag == NULL \
+ or (self.parsed_event.data.scalar.tag[0] == c'!'
+ and self.parsed_event.data.scalar.tag[1] == c'\0'):
+ tag = self.resolve(ScalarNode, value, (plain_implicit, quoted_implicit))
+ else:
+ tag = PyUnicode_DecodeUTF8(self.parsed_event.data.scalar.tag,
+ strlen(self.parsed_event.data.scalar.tag), 'strict')
+ style = None
+ if self.parsed_event.data.scalar.style == YAML_PLAIN_SCALAR_STYLE:
+ style = ''
+ elif self.parsed_event.data.scalar.style == YAML_SINGLE_QUOTED_SCALAR_STYLE:
+ style = '\''
+ elif self.parsed_event.data.scalar.style == YAML_DOUBLE_QUOTED_SCALAR_STYLE:
+ style = '"'
+ elif self.parsed_event.data.scalar.style == YAML_LITERAL_SCALAR_STYLE:
+ style = '|'
+ elif self.parsed_event.data.scalar.style == YAML_FOLDED_SCALAR_STYLE:
+ style = '>'
+ node = ScalarNode(tag, value, start_mark, end_mark, style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ yaml_event_delete(&self.parsed_event)
+ return node
+
+ cdef _compose_sequence_node(self, object anchor):
+ cdef int index
+ start_mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ implicit = False
+ if self.parsed_event.data.sequence_start.implicit == 1:
+ implicit = True
+ if self.parsed_event.data.sequence_start.tag == NULL \
+ or (self.parsed_event.data.sequence_start.tag[0] == c'!'
+ and self.parsed_event.data.sequence_start.tag[1] == c'\0'):
+ tag = self.resolve(SequenceNode, None, implicit)
+ else:
+ tag = PyUnicode_DecodeUTF8(self.parsed_event.data.sequence_start.tag,
+ strlen(self.parsed_event.data.sequence_start.tag), 'strict')
+ flow_style = None
+ if self.parsed_event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE:
+ flow_style = True
+ elif self.parsed_event.data.sequence_start.style == YAML_BLOCK_SEQUENCE_STYLE:
+ flow_style = False
+ value = []
+ node = SequenceNode(tag, value, start_mark, None, flow_style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ yaml_event_delete(&self.parsed_event)
+ index = 0
+ self._parse_next_event()
+ while self.parsed_event.type != YAML_SEQUENCE_END_EVENT:
+ value.append(self._compose_node(node, index))
+ index = index+1
+ self._parse_next_event()
+ node.end_mark = Mark(self.stream_name,
+ self.parsed_event.end_mark.index,
+ self.parsed_event.end_mark.line,
+ self.parsed_event.end_mark.column,
+ None, None)
+ yaml_event_delete(&self.parsed_event)
+ return node
+
+ cdef _compose_mapping_node(self, object anchor):
+ start_mark = Mark(self.stream_name,
+ self.parsed_event.start_mark.index,
+ self.parsed_event.start_mark.line,
+ self.parsed_event.start_mark.column,
+ None, None)
+ implicit = False
+ if self.parsed_event.data.mapping_start.implicit == 1:
+ implicit = True
+ if self.parsed_event.data.mapping_start.tag == NULL \
+ or (self.parsed_event.data.mapping_start.tag[0] == c'!'
+ and self.parsed_event.data.mapping_start.tag[1] == c'\0'):
+ tag = self.resolve(MappingNode, None, implicit)
+ else:
+ tag = PyUnicode_DecodeUTF8(self.parsed_event.data.mapping_start.tag,
+ strlen(self.parsed_event.data.mapping_start.tag), 'strict')
+ flow_style = None
+ if self.parsed_event.data.mapping_start.style == YAML_FLOW_MAPPING_STYLE:
+ flow_style = True
+ elif self.parsed_event.data.mapping_start.style == YAML_BLOCK_MAPPING_STYLE:
+ flow_style = False
+ value = []
+ node = MappingNode(tag, value, start_mark, None, flow_style)
+ if anchor is not None:
+ self.anchors[anchor] = node
+ yaml_event_delete(&self.parsed_event)
+ self._parse_next_event()
+ while self.parsed_event.type != YAML_MAPPING_END_EVENT:
+ item_key = self._compose_node(node, None)
+ item_value = self._compose_node(node, item_key)
+ value.append((item_key, item_value))
+ self._parse_next_event()
+ node.end_mark = Mark(self.stream_name,
+ self.parsed_event.end_mark.index,
+ self.parsed_event.end_mark.line,
+ self.parsed_event.end_mark.column,
+ None, None)
+ yaml_event_delete(&self.parsed_event)
+ return node
+
+ cdef int _parse_next_event(self) except 0:
+ if self.parsed_event.type == YAML_NO_EVENT:
+ if yaml_parser_parse(&self.parser, &self.parsed_event) == 0:
+ error = self._parser_error()
+ raise error
+ return 1
+
+cdef int input_handler(void *data, char *buffer, int size, int *read) except 0:
+ cdef CParser parser
+ parser = <CParser>data
+ value = parser.stream.read(size)
+ if PyString_CheckExact(value) == 0:
+ raise TypeError("a string value is expected")
+ if PyString_GET_SIZE(value) > size:
+ raise ValueError("a string value it too long")
+ memcpy(buffer, PyString_AS_STRING(value), PyString_GET_SIZE(value))
+ read[0] = PyString_GET_SIZE(value)
+ return 1
+
+cdef class CEmitter:
+
+ cdef yaml_emitter_t emitter
+
+ cdef object stream
+
+ cdef yaml_encoding_t use_encoding
+ cdef int document_start_implicit
+ cdef int document_end_implicit
+ cdef object use_version
+ cdef object use_tags
+
+ cdef object serialized_nodes
+ cdef object anchors
+ cdef int last_alias_id
+ cdef int closed
+
+ def __init__(self, stream, canonical=None, indent=None, width=None,
+ allow_unicode=None, line_break=None, encoding=None,
+ explicit_start=None, explicit_end=None, version=None, tags=None):
+ if yaml_emitter_initialize(&self.emitter) == 0:
+ raise MemoryError
+ self.stream = stream
+ yaml_emitter_set_output(&self.emitter, output_handler, <void *>self)
+ if canonical is not None:
+ yaml_emitter_set_canonical(&self.emitter, 1)
+ if indent is not None:
+ yaml_emitter_set_indent(&self.emitter, indent)
+ if width is not None:
+ yaml_emitter_set_width(&self.emitter, width)
+ if allow_unicode is not None:
+ yaml_emitter_set_unicode(&self.emitter, 1)
+ if line_break is not None:
+ if line_break == '\r':
+ yaml_emitter_set_break(&self.emitter, YAML_CR_BREAK)
+ elif line_break == '\n':
+ yaml_emitter_set_break(&self.emitter, YAML_LN_BREAK)
+ elif line_break == '\r\n':
+ yaml_emitter_set_break(&self.emitter, YAML_CRLN_BREAK)
+ if encoding == 'utf-16-le':
+ self.use_encoding = YAML_UTF16LE_ENCODING
+ elif encoding == 'utf-16-be':
+ self.use_encoding = YAML_UTF16BE_ENCODING
+ else:
+ self.use_encoding = YAML_UTF8_ENCODING
+ self.document_start_implicit = 1
+ if explicit_start:
+ self.document_start_implicit = 0
+ self.document_end_implicit = 1
+ if explicit_end:
+ self.document_end_implicit = 0
+ self.use_version = version
+ self.use_tags = tags
+ self.serialized_nodes = {}
+ self.anchors = {}
+ self.last_alias_id = 0
+ self.closed = -1
+
+ def __dealloc__(self):
+ yaml_emitter_delete(&self.emitter)
+
+ cdef object _emitter_error(self):
+ if self.emitter.error == YAML_MEMORY_ERROR:
+ return MemoryError
+ elif self.emitter.error == YAML_EMITTER_ERROR:
+ return EmitterError(self.emitter.problem)
+ raise ValueError("no emitter error")
+
+ cdef int _object_to_event(self, object event_object, yaml_event_t *event) except 0:
+ cdef yaml_encoding_t encoding
+ cdef yaml_version_directive_t version_directive_value
+ cdef yaml_version_directive_t *version_directive
+ cdef yaml_tag_directive_t tag_directives_value[128]
+ cdef yaml_tag_directive_t *tag_directives_start
+ cdef yaml_tag_directive_t *tag_directives_end
+ cdef int implicit
+ cdef int plain_implicit
+ cdef int quoted_implicit
+ cdef char *anchor
+ cdef char *tag
+ cdef char *value
+ cdef int length
+ cdef yaml_scalar_style_t scalar_style
+ cdef yaml_sequence_style_t sequence_style
+ cdef yaml_mapping_style_t mapping_style
+ event_class = event_object.__class__
+ if event_class is StreamStartEvent:
+ encoding = YAML_UTF8_ENCODING
+ if event_object.encoding == 'utf-16-le':
+ encoding = YAML_UTF16LE_ENCODING
+ elif event_object.encoding == 'utf-16-be':
+ encoding = YAML_UTF16BE_ENCODING
+ yaml_stream_start_event_initialize(event, encoding)
+ elif event_class is StreamEndEvent:
+ yaml_stream_end_event_initialize(event)
+ elif event_class is DocumentStartEvent:
+ version_directive = NULL
+ if event_object.version:
+ version_directive_value.major = event_object.version[0]
+ version_directive_value.minor = event_object.version[1]
+ version_directive = &version_directive_value
+ tag_directives_start = NULL
+ tag_directives_end = NULL
+ if event_object.tags:
+ if len(event_object.tags) > 128:
+ raise ValueError("too many tags")
+ tag_directives_start = tag_directives_value
+ tag_directives_end = tag_directives_value
+ cache = []
+ for handle in event_object.tags:
+ prefix = event_object.tags[handle]
+ if PyUnicode_CheckExact(handle):
+ handle = PyUnicode_AsUTF8String(handle)
+ cache.append(handle)
+ if not PyString_CheckExact(handle):
+ raise TypeError("tag handle must be a string")
+ tag_directives_end.handle = PyString_AS_STRING(handle)
+ if PyUnicode_CheckExact(prefix):
+ prefix = PyUnicode_AsUTF8String(prefix)
+ cache.append(prefix)
+ if not PyString_CheckExact(prefix):
+ raise TypeError("tag prefix must be a string")
+ tag_directives_end.prefix = PyString_AS_STRING(prefix)
+ tag_directives_end = tag_directives_end+1
+ implicit = 1
+ if event_object.explicit:
+ implicit = 0
+ if yaml_document_start_event_initialize(event, version_directive,
+ tag_directives_start, tag_directives_end, implicit) == 0:
+ raise MemoryError
+ elif event_class is DocumentEndEvent:
+ implicit = 1
+ if event_object.explicit:
+ implicit = 0
+ yaml_document_end_event_initialize(event, implicit)
+ elif event_class is AliasEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyString_CheckExact(anchor_object):
+ raise TypeError("anchor must be a string")
+ anchor = PyString_AS_STRING(anchor_object)
+ if yaml_alias_event_initialize(event, anchor) == 0:
+ raise MemoryError
+ elif event_class is ScalarEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyString_CheckExact(anchor_object):
+ raise TypeError("anchor must be a string")
+ anchor = PyString_AS_STRING(anchor_object)
+ tag = NULL
+ tag_object = event_object.tag
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyString_CheckExact(tag_object):
+ raise TypeError("tag must be a string")
+ tag = PyString_AS_STRING(tag_object)
+ value_object = event_object.value
+ if PyUnicode_CheckExact(value_object):
+ value_object = PyUnicode_AsUTF8String(value_object)
+ if not PyString_CheckExact(value_object):
+ raise TypeError("value must be a string")
+ value = PyString_AS_STRING(value_object)
+ length = PyString_GET_SIZE(value_object)
+ plain_implicit = 0
+ quoted_implicit = 0
+ if event_object.implicit is not None:
+ plain_implicit = event_object.implicit[0]
+ quoted_implicit = event_object.implicit[1]
+ style_object = event_object.style
+ scalar_style = YAML_PLAIN_SCALAR_STYLE
+ if style_object == "'":
+ scalar_style = YAML_SINGLE_QUOTED_SCALAR_STYLE
+ elif style_object == "\"":
+ scalar_style = YAML_DOUBLE_QUOTED_SCALAR_STYLE
+ elif style_object == "|":
+ scalar_style = YAML_LITERAL_SCALAR_STYLE
+ elif style_object == ">":
+ scalar_style = YAML_FOLDED_SCALAR_STYLE
+ if yaml_scalar_event_initialize(event, anchor, tag, value, length,
+ plain_implicit, quoted_implicit, scalar_style) == 0:
+ raise MemoryError
+ elif event_class is SequenceStartEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyString_CheckExact(anchor_object):
+ raise TypeError("anchor must be a string")
+ anchor = PyString_AS_STRING(anchor_object)
+ tag = NULL
+ tag_object = event_object.tag
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyString_CheckExact(tag_object):
+ raise TypeError("tag must be a string")
+ tag = PyString_AS_STRING(tag_object)
+ implicit = 0
+ if event_object.implicit:
+ implicit = 1
+ sequence_style = YAML_BLOCK_SEQUENCE_STYLE
+ if event_object.flow_style:
+ sequence_style = YAML_FLOW_SEQUENCE_STYLE
+ if yaml_sequence_start_event_initialize(event, anchor, tag,
+ implicit, sequence_style) == 0:
+ raise MemoryError
+ elif event_class is MappingStartEvent:
+ anchor = NULL
+ anchor_object = event_object.anchor
+ if anchor_object is not None:
+ if PyUnicode_CheckExact(anchor_object):
+ anchor_object = PyUnicode_AsUTF8String(anchor_object)
+ if not PyString_CheckExact(anchor_object):
+ raise TypeError("anchor must be a string")
+ anchor = PyString_AS_STRING(anchor_object)
+ tag = NULL
+ tag_object = event_object.tag
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyString_CheckExact(tag_object):
+ raise TypeError("tag must be a string")
+ tag = PyString_AS_STRING(tag_object)
+ implicit = 0
+ if event_object.implicit:
+ implicit = 1
+ mapping_style = YAML_BLOCK_MAPPING_STYLE
+ if event_object.flow_style:
+ mapping_style = YAML_FLOW_MAPPING_STYLE
+ if yaml_mapping_start_event_initialize(event, anchor, tag,
+ implicit, mapping_style) == 0:
+ raise MemoryError
+ elif event_class is SequenceEndEvent:
+ yaml_sequence_end_event_initialize(event)
+ elif event_class is MappingEndEvent:
+ yaml_mapping_end_event_initialize(event)
+ else:
+ raise TypeError("invalid event %s" % event_object)
+ return 1
+
+ def emit(self, event_object):
+ cdef yaml_event_t event
+ self._object_to_event(event_object, &event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+
+ def open(self):
+ cdef yaml_event_t event
+ if self.closed == -1:
+ yaml_stream_start_event_initialize(&event, self.use_encoding)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.closed = 0
+ elif self.closed == 1:
+ raise SerializerError("serializer is closed")
+ else:
+ raise SerializerError("serializer is already opened")
+
+ def close(self):
+ cdef yaml_event_t event
+ if self.closed == -1:
+ raise SerializerError("serializer is not opened")
+ elif self.closed == 0:
+ yaml_stream_end_event_initialize(&event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.closed = 1
+
+ def serialize(self, node):
+ cdef yaml_event_t event
+ cdef yaml_version_directive_t version_directive_value
+ cdef yaml_version_directive_t *version_directive
+ cdef yaml_tag_directive_t tag_directives_value[128]
+ cdef yaml_tag_directive_t *tag_directives_start
+ cdef yaml_tag_directive_t *tag_directives_end
+ if self.closed == -1:
+ raise SerializerError("serializer is not opened")
+ elif self.closed == 1:
+ raise SerializerError("serializer is closed")
+ cache = []
+ version_directive = NULL
+ if self.use_version:
+ version_directive_value.major = self.use_version[0]
+ version_directive_value.minor = self.use_version[1]
+ version_directive = &version_directive_value
+ tag_directives_start = NULL
+ tag_directives_end = NULL
+ if self.use_tags:
+ if len(self.use_tags) > 128:
+ raise ValueError("too many tags")
+ tag_directives_start = tag_directives_value
+ tag_directives_end = tag_directives_value
+ for handle in self.use_tags:
+ prefix = self.use_tags[handle]
+ if PyUnicode_CheckExact(handle):
+ handle = PyUnicode_AsUTF8String(handle)
+ cache.append(handle)
+ if not PyString_CheckExact(handle):
+ raise TypeError("tag handle must be a string")
+ tag_directives_end.handle = PyString_AS_STRING(handle)
+ if PyUnicode_CheckExact(prefix):
+ prefix = PyUnicode_AsUTF8String(prefix)
+ cache.append(prefix)
+ if not PyString_CheckExact(prefix):
+ raise TypeError("tag prefix must be a string")
+ tag_directives_end.prefix = PyString_AS_STRING(prefix)
+ tag_directives_end = tag_directives_end+1
+ if yaml_document_start_event_initialize(&event, version_directive,
+ tag_directives_start, tag_directives_end,
+ self.document_start_implicit) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self._anchor_node(node)
+ self._serialize_node(node, None, None)
+ yaml_document_end_event_initialize(&event, self.document_end_implicit)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ self.serialized_nodes = {}
+ self.anchors = {}
+ self.last_alias_id = 0
+
+ cdef int _anchor_node(self, object node) except 0:
+ if node in self.anchors:
+ if self.anchors[node] is None:
+ self.last_alias_id = self.last_alias_id+1
+ self.anchors[node] = "id%03d" % self.last_alias_id
+ else:
+ self.anchors[node] = None
+ node_class = node.__class__
+ if node_class is SequenceNode:
+ for item in node.value:
+ self._anchor_node(item)
+ elif node_class is MappingNode:
+ for key, value in node.value:
+ self._anchor_node(key)
+ self._anchor_node(value)
+ return 1
+
+ cdef int _serialize_node(self, object node, object parent, object index) except 0:
+ cdef yaml_event_t event
+ cdef int implicit
+ cdef int plain_implicit
+ cdef int quoted_implicit
+ cdef char *anchor
+ cdef char *tag
+ cdef char *value
+ cdef int length
+ cdef int item_index
+ cdef yaml_scalar_style_t scalar_style
+ cdef yaml_sequence_style_t sequence_style
+ cdef yaml_mapping_style_t mapping_style
+ anchor_object = self.anchors[node]
+ anchor = NULL
+ if anchor_object is not None:
+ anchor = PyString_AS_STRING(anchor_object)
+ if node in self.serialized_nodes:
+ if yaml_alias_event_initialize(&event, anchor) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ else:
+ node_class = node.__class__
+ self.serialized_nodes[node] = True
+ self.descend_resolver(parent, index)
+ if node_class is ScalarNode:
+ plain_implicit = 0
+ quoted_implicit = 0
+ tag_object = node.tag
+ if self.resolve(ScalarNode, node.value, (True, False)) == tag_object:
+ plain_implicit = 1
+ if self.resolve(ScalarNode, node.value, (False, True)) == tag_object:
+ quoted_implicit = 1
+ tag = NULL
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyString_CheckExact(tag_object):
+ raise TypeError("tag must be a string")
+ tag = PyString_AS_STRING(tag_object)
+ value_object = node.value
+ if PyUnicode_CheckExact(value_object):
+ value_object = PyUnicode_AsUTF8String(value_object)
+ if not PyString_CheckExact(value_object):
+ raise TypeError("value must be a string")
+ value = PyString_AS_STRING(value_object)
+ length = PyString_GET_SIZE(value_object)
+ style_object = node.style
+ scalar_style = YAML_PLAIN_SCALAR_STYLE
+ if style_object == "'":
+ scalar_style = YAML_SINGLE_QUOTED_SCALAR_STYLE
+ elif style_object == "\"":
+ scalar_style = YAML_DOUBLE_QUOTED_SCALAR_STYLE
+ elif style_object == "|":
+ scalar_style = YAML_LITERAL_SCALAR_STYLE
+ elif style_object == ">":
+ scalar_style = YAML_FOLDED_SCALAR_STYLE
+ if yaml_scalar_event_initialize(&event, anchor, tag, value, length,
+ plain_implicit, quoted_implicit, scalar_style) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ elif node_class is SequenceNode:
+ implicit = 0
+ tag_object = node.tag
+ if self.resolve(SequenceNode, node.value, True) == tag_object:
+ implicit = 1
+ tag = NULL
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyString_CheckExact(tag_object):
+ raise TypeError("tag must be a string")
+ tag = PyString_AS_STRING(tag_object)
+ sequence_style = YAML_BLOCK_SEQUENCE_STYLE
+ if node.flow_style:
+ sequence_style = YAML_FLOW_SEQUENCE_STYLE
+ if yaml_sequence_start_event_initialize(&event, anchor, tag,
+ implicit, sequence_style) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ item_index = 0
+ for item in node.value:
+ self._serialize_node(item, node, item_index)
+ item_index = item_index+1
+ yaml_sequence_end_event_initialize(&event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ elif node_class is MappingNode:
+ implicit = 0
+ tag_object = node.tag
+ if self.resolve(MappingNode, node.value, True) == tag_object:
+ implicit = 1
+ tag = NULL
+ if tag_object is not None:
+ if PyUnicode_CheckExact(tag_object):
+ tag_object = PyUnicode_AsUTF8String(tag_object)
+ if not PyString_CheckExact(tag_object):
+ raise TypeError("tag must be a string")
+ tag = PyString_AS_STRING(tag_object)
+ mapping_style = YAML_BLOCK_MAPPING_STYLE
+ if node.flow_style:
+ mapping_style = YAML_FLOW_MAPPING_STYLE
+ if yaml_mapping_start_event_initialize(&event, anchor, tag,
+ implicit, mapping_style) == 0:
+ raise MemoryError
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ for item_key, item_value in node.value:
+ self._serialize_node(item_key, node, None)
+ self._serialize_node(item_value, node, item_key)
+ yaml_mapping_end_event_initialize(&event)
+ if yaml_emitter_emit(&self.emitter, &event) == 0:
+ error = self._emitter_error()
+ raise error
+ return 1
+
+cdef int output_handler(void *data, char *buffer, int size) except 0:
+ cdef CEmitter emitter
+ emitter = <CEmitter>data
+ value = PyString_FromStringAndSize(buffer, size)
+ emitter.stream.write(value)
+ return 1
+