| 1 | |
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| 2 | import yaml |
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| 3 | |
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| 4 | def get_version_string(): |
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| 5 | return yaml_get_version_string() |
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| 6 | |
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| 7 | def get_version(): |
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| 8 | cdef int major, minor, patch |
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| 9 | yaml_get_version(&major, &minor, &patch) |
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| 10 | return (major, minor, patch) |
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| 11 | |
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| 12 | def test_scanner(data): |
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| 13 | cdef yaml_parser_t *parser |
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| 14 | cdef yaml_token_t *token |
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| 15 | cdef int done |
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| 16 | if PyString_CheckExact(data) == 0: |
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| 17 | raise TypeError("string input required") |
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| 18 | parser = yaml_parser_new() |
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| 19 | if parser == NULL: |
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| 20 | raise MemoryError |
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| 21 | yaml_parser_set_input_string(parser, PyString_AS_STRING(data), PyString_GET_SIZE(data)) |
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| 22 | done = 0 |
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| 23 | while done == 0: |
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| 24 | token = yaml_parser_get_token(parser) |
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| 25 | if token == NULL: |
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| 26 | raise MemoryError |
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| 27 | if token.type == YAML_STREAM_END_TOKEN: |
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| 28 | done = 1 |
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| 29 | yaml_token_delete(token) |
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| 30 | yaml_parser_delete(parser) |
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| 31 | |
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| 32 | def test_parser(data): |
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| 33 | cdef yaml_parser_t *parser |
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| 34 | cdef yaml_event_t *event |
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| 35 | cdef int done |
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| 36 | if PyString_CheckExact(data) == 0: |
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| 37 | raise TypeError("string input required") |
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| 38 | parser = yaml_parser_new() |
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| 39 | if parser == NULL: |
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| 40 | raise MemoryError |
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| 41 | yaml_parser_set_input_string(parser, PyString_AS_STRING(data), PyString_GET_SIZE(data)) |
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| 42 | done = 0 |
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| 43 | while done == 0: |
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| 44 | event = yaml_parser_get_event(parser) |
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| 45 | if event == NULL: |
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| 46 | raise MemoryError |
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| 47 | if event.type == YAML_STREAM_END_EVENT: |
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| 48 | done = 1 |
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| 49 | yaml_event_delete(event) |
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| 50 | yaml_parser_delete(parser) |
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| 51 | |
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| 52 | cdef class ScannerAndParser: |
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| 53 | |
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| 54 | cdef yaml_parser_t *parser |
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| 55 | cdef int eof |
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| 56 | cdef object stream |
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| 57 | cdef yaml_token_t *cached_token |
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| 58 | cdef yaml_event_t *cached_event |
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| 59 | cdef object cached_obj |
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| 60 | |
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| 61 | def __init__(self, stream): |
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| 62 | if hasattr(stream, 'read'): |
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| 63 | stream = stream.read() |
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| 64 | if PyUnicode_CheckExact(stream) != 0: |
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| 65 | stream = stream.encode('utf-8') |
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| 66 | if PyString_CheckExact(stream) == 0: |
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| 67 | raise TypeError("a string or stream input is required") |
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| 68 | self.parser = yaml_parser_new() |
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| 69 | if self.parser == NULL: |
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| 70 | raise MemoryError |
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| 71 | yaml_parser_set_input_string(self.parser, PyString_AS_STRING(stream), PyString_GET_SIZE(stream)) |
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| 72 | self.eof = 0 |
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| 73 | self.stream = stream |
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| 74 | self.cached_token = NULL |
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| 75 | self.cached_obj = None |
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| 76 | |
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| 77 | def __dealloc__(self): |
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| 78 | if self.parser != NULL: |
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| 79 | yaml_parser_delete(self.parser) |
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| 80 | self.parser = NULL |
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| 81 | |
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| 82 | cdef object _convert_token(self, yaml_token_t *token): |
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| 83 | if token == NULL: |
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| 84 | if self.parser.error == YAML_MEMORY_ERROR: |
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| 85 | raise MemoryError |
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| 86 | elif self.parser.error == YAML_READER_ERROR: |
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| 87 | raise yaml.reader.ReaderError("<input>", |
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| 88 | self.parser.problem_offset, |
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| 89 | self.parser.problem_value, |
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| 90 | '?', self.parser.problem) |
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| 91 | elif self.parser.error == YAML_SCANNER_ERROR: |
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| 92 | if self.parser.context != NULL: |
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| 93 | raise yaml.scanner.ScannerError( |
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| 94 | self.parser.context, |
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| 95 | yaml.Mark("<input>", |
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| 96 | self.parser.context_mark.index, |
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| 97 | self.parser.context_mark.line, |
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| 98 | self.parser.context_mark.column, |
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| 99 | None, None), |
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| 100 | self.parser.problem, |
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| 101 | yaml.Mark("<input>", |
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| 102 | self.parser.problem_mark.index, |
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| 103 | self.parser.problem_mark.line, |
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| 104 | self.parser.problem_mark.column, |
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| 105 | None, None)) |
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| 106 | else: |
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| 107 | raise yaml.scanner.ScannerError(None, None, |
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| 108 | self.parser.problem, |
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| 109 | yaml.Mark("<input>", |
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| 110 | self.parser.problem_mark.index, |
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| 111 | self.parser.problem_mark.line, |
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| 112 | self.parser.problem_mark.column, |
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| 113 | None, None)) |
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| 114 | else: |
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| 115 | raise RuntimeError("neither error nor token produced") |
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| 116 | start_mark = yaml.Mark("<input>", |
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| 117 | token.start_mark.index, |
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| 118 | token.start_mark.line, |
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| 119 | token.start_mark.column, |
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| 120 | None, None) |
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| 121 | end_mark = yaml.Mark("<input>", |
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| 122 | token.end_mark.index, |
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| 123 | token.end_mark.line, |
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| 124 | token.end_mark.column, |
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| 125 | None, None) |
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| 126 | if token.type == YAML_STREAM_START_TOKEN: |
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| 127 | return yaml.StreamStartToken(start_mark, end_mark) |
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| 128 | elif token.type == YAML_STREAM_END_TOKEN: |
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| 129 | return yaml.StreamEndToken(start_mark, end_mark) |
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| 130 | elif token.type == YAML_VERSION_DIRECTIVE_TOKEN: |
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| 131 | return yaml.DirectiveToken('YAML', |
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| 132 | (token.data.version_directive.major, |
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| 133 | token.data.version_directive.minor), |
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| 134 | start_mark, end_mark) |
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| 135 | elif token.type == YAML_TAG_DIRECTIVE_TOKEN: |
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| 136 | return yaml.DirectiveToken('TAG', |
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| 137 | (token.data.tag_directive.handle, |
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| 138 | token.data.tag_directive.prefix), |
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| 139 | start_mark, end_mark) |
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| 140 | elif token.type == YAML_DOCUMENT_START_TOKEN: |
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| 141 | return yaml.DocumentStartToken(start_mark, end_mark) |
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| 142 | elif token.type == YAML_DOCUMENT_END_TOKEN: |
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| 143 | return yaml.DocumentEndToken(start_mark, end_mark) |
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| 144 | elif token.type == YAML_BLOCK_SEQUENCE_START_TOKEN: |
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| 145 | return yaml.BlockSequenceStartToken(start_mark, end_mark) |
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| 146 | elif token.type == YAML_BLOCK_MAPPING_START_TOKEN: |
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| 147 | return yaml.BlockMappingStartToken(start_mark, end_mark) |
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| 148 | elif token.type == YAML_BLOCK_END_TOKEN: |
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| 149 | return yaml.BlockEndToken(start_mark, end_mark) |
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| 150 | elif token.type == YAML_FLOW_SEQUENCE_START_TOKEN: |
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| 151 | return yaml.FlowSequenceStartToken(start_mark, end_mark) |
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| 152 | elif token.type == YAML_FLOW_SEQUENCE_END_TOKEN: |
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| 153 | return yaml.FlowSequenceEndToken(start_mark, end_mark) |
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| 154 | elif token.type == YAML_FLOW_MAPPING_START_TOKEN: |
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| 155 | return yaml.FlowMappingStartToken(start_mark, end_mark) |
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| 156 | elif token.type == YAML_FLOW_MAPPING_END_TOKEN: |
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| 157 | return yaml.FlowMappingEndToken(start_mark, end_mark) |
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| 158 | elif token.type == YAML_BLOCK_ENTRY_TOKEN: |
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| 159 | return yaml.BlockEntryToken(start_mark, end_mark) |
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| 160 | elif token.type == YAML_FLOW_ENTRY_TOKEN: |
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| 161 | return yaml.FlowEntryToken(start_mark, end_mark) |
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| 162 | elif token.type == YAML_KEY_TOKEN: |
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| 163 | return yaml.KeyToken(start_mark, end_mark) |
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| 164 | elif token.type == YAML_VALUE_TOKEN: |
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| 165 | return yaml.ValueToken(start_mark, end_mark) |
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| 166 | elif token.type == YAML_ALIAS_TOKEN: |
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| 167 | return yaml.AliasToken(token.data.alias.value, |
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| 168 | start_mark, end_mark) |
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| 169 | elif token.type == YAML_ANCHOR_TOKEN: |
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| 170 | return yaml.AnchorToken(token.data.anchor.value, |
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| 171 | start_mark, end_mark) |
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| 172 | elif token.type == YAML_TAG_TOKEN: |
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| 173 | handle = token.data.tag.handle |
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| 174 | if handle == '': |
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| 175 | handle = None |
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| 176 | return yaml.TagToken((handle, token.data.tag.suffix), |
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| 177 | start_mark, end_mark) |
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| 178 | elif token.type == YAML_SCALAR_TOKEN: |
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| 179 | value = PyString_FromStringAndSize(token.data.scalar.value, token.data.scalar.length) |
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| 180 | return yaml.ScalarToken(unicode(value, 'utf-8'), |
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| 181 | bool(token.data.scalar.style == YAML_PLAIN_SCALAR_STYLE), |
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| 182 | start_mark, end_mark) |
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| 183 | else: |
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| 184 | raise RuntimeError("unknown token type") |
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| 185 | |
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| 186 | cdef object _convert_event(self, yaml_event_t *event): |
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| 187 | if event == NULL: |
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| 188 | if self.parser.error == YAML_MEMORY_ERROR: |
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| 189 | raise MemoryError |
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| 190 | elif self.parser.error == YAML_READER_ERROR: |
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| 191 | raise yaml.reader.ReaderError("<input>", |
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| 192 | self.parser.problem_offset, |
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| 193 | self.parser.problem_value, |
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| 194 | '?', self.parser.problem) |
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| 195 | elif self.parser.error == YAML_SCANNER_ERROR: |
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| 196 | if self.parser.context != NULL: |
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| 197 | raise yaml.scanner.ScannerError( |
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| 198 | self.parser.context, |
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| 199 | yaml.Mark("<input>", |
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| 200 | self.parser.context_mark.index, |
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| 201 | self.parser.context_mark.line, |
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| 202 | self.parser.context_mark.column, |
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| 203 | None, None), |
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| 204 | self.parser.problem, |
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| 205 | yaml.Mark("<input>", |
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| 206 | self.parser.problem_mark.index, |
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| 207 | self.parser.problem_mark.line, |
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| 208 | self.parser.problem_mark.column, |
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| 209 | None, None)) |
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| 210 | else: |
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| 211 | raise yaml.scanner.ScannerError(None, None, |
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| 212 | self.parser.problem, |
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| 213 | yaml.Mark("<input>", |
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| 214 | self.parser.problem_mark.index, |
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| 215 | self.parser.problem_mark.line, |
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| 216 | self.parser.problem_mark.column, |
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| 217 | None, None)) |
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| 218 | elif self.parser.error == YAML_PARSER_ERROR: |
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| 219 | if self.parser.context != NULL: |
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| 220 | raise yaml.parser.ParserError( |
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| 221 | self.parser.context, |
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| 222 | yaml.Mark("<input>", |
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| 223 | self.parser.context_mark.index, |
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| 224 | self.parser.context_mark.line, |
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| 225 | self.parser.context_mark.column, |
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| 226 | None, None), |
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| 227 | self.parser.problem, |
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| 228 | yaml.Mark("<input>", |
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| 229 | self.parser.problem_mark.index, |
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| 230 | self.parser.problem_mark.line, |
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| 231 | self.parser.problem_mark.column, |
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| 232 | None, None)) |
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| 233 | else: |
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| 234 | raise yaml.parser.ParserError(None, None, |
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| 235 | self.parser.problem, |
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| 236 | yaml.Mark("<input>", |
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| 237 | self.parser.problem_mark.index, |
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| 238 | self.parser.problem_mark.line, |
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| 239 | self.parser.problem_mark.column, |
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| 240 | None, None)) |
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| 241 | else: |
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| 242 | raise RuntimeError("neither error nor event produced") |
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| 243 | start_mark = yaml.Mark("<input>", |
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| 244 | event.start_mark.index, |
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| 245 | event.start_mark.line, |
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| 246 | event.start_mark.column, |
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| 247 | None, None) |
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| 248 | end_mark = yaml.Mark("<input>", |
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| 249 | event.end_mark.index, |
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| 250 | event.end_mark.line, |
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| 251 | event.end_mark.column, |
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| 252 | None, None) |
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| 253 | if event.type == YAML_STREAM_START_EVENT: |
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| 254 | return yaml.StreamStartEvent(start_mark, end_mark) |
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| 255 | elif event.type == YAML_STREAM_END_EVENT: |
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| 256 | return yaml.StreamEndEvent(start_mark, end_mark) |
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| 257 | elif event.type == YAML_DOCUMENT_START_EVENT: |
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| 258 | return yaml.DocumentStartEvent(start_mark, end_mark, |
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| 259 | (event.data.document_start.implicit == 0)) |
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| 260 | elif event.type == YAML_DOCUMENT_END_EVENT: |
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| 261 | return yaml.DocumentEndEvent(start_mark, end_mark, |
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| 262 | (event.data.document_end.implicit == 0)) |
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| 263 | elif event.type == YAML_SCALAR_EVENT: |
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| 264 | if event.data.scalar.anchor == NULL: |
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| 265 | anchor = None |
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| 266 | else: |
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| 267 | anchor = event.data.scalar.anchor |
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| 268 | if event.data.scalar.tag == NULL: |
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| 269 | tag = None |
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| 270 | else: |
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| 271 | tag = event.data.scalar.tag |
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| 272 | implicit = (event.data.scalar.plain_implicit == 1, event.data.scalar.quoted_implicit == 1) |
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| 273 | flow_style = (event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE) |
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| 274 | value = PyString_FromStringAndSize(event.data.scalar.value, event.data.scalar.length) |
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| 275 | return yaml.ScalarEvent(anchor, tag, implicit, unicode(value, 'utf-8'), |
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| 276 | start_mark, end_mark) |
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| 277 | elif event.type == YAML_ALIAS_EVENT: |
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| 278 | if event.data.alias.anchor == NULL: |
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| 279 | anchor = None |
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| 280 | else: |
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| 281 | anchor = event.data.alias.anchor |
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| 282 | return yaml.AliasEvent(anchor, start_mark, end_mark) |
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| 283 | elif event.type == YAML_SEQUENCE_START_EVENT: |
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| 284 | if event.data.sequence_start.anchor == NULL: |
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| 285 | anchor = None |
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| 286 | else: |
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| 287 | anchor = event.data.sequence_start.anchor |
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| 288 | if event.data.sequence_start.tag == NULL: |
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| 289 | tag = None |
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| 290 | else: |
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| 291 | tag = event.data.sequence_start.tag |
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| 292 | implicit = (event.data.sequence_start.implicit == 1) |
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| 293 | flow_style = (event.data.sequence_start.style == YAML_FLOW_SEQUENCE_STYLE) |
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| 294 | return yaml.SequenceStartEvent(anchor, tag, implicit, |
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| 295 | start_mark, end_mark, flow_style) |
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| 296 | elif event.type == YAML_MAPPING_START_EVENT: |
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| 297 | if event.data.mapping_start.anchor == NULL: |
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| 298 | anchor = None |
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| 299 | else: |
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| 300 | anchor = event.data.mapping_start.anchor |
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| 301 | if event.data.mapping_start.tag == NULL: |
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| 302 | tag = None |
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| 303 | else: |
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| 304 | tag = event.data.mapping_start.tag |
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| 305 | implicit = (event.data.mapping_start.implicit == 1) |
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| 306 | flow_style = (event.data.mapping_start.style == YAML_FLOW_MAPPING_STYLE) |
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| 307 | return yaml.MappingStartEvent(anchor, tag, implicit, |
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| 308 | start_mark, end_mark, flow_style) |
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| 309 | elif event.type == YAML_SEQUENCE_END_EVENT: |
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| 310 | return yaml.SequenceEndEvent(start_mark, end_mark) |
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| 311 | elif event.type == YAML_MAPPING_END_EVENT: |
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| 312 | return yaml.MappingEndEvent(start_mark, end_mark) |
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| 313 | else: |
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| 314 | raise RuntimeError("unknown event type") |
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| 315 | |
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| 316 | def get_token(self): |
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| 317 | cdef yaml_token_t *token |
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| 318 | if self.cached_token != NULL: |
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| 319 | yaml_token_delete(yaml_parser_get_token(self.parser)) |
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| 320 | obj = self.cached_obj |
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| 321 | self.cached_token = NULL |
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| 322 | self.cached_obj = None |
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| 323 | return obj |
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| 324 | if self.eof != 0: |
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| 325 | return None |
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| 326 | token = yaml_parser_get_token(self.parser) |
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| 327 | obj = self._convert_token(token) |
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| 328 | if token.type == YAML_STREAM_END_TOKEN: |
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| 329 | self.eof = 1 |
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| 330 | yaml_token_delete(token) |
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| 331 | return obj |
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| 332 | |
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| 333 | def peek_token(self): |
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| 334 | cdef yaml_token_t *token |
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| 335 | if self.cached_token != NULL: |
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| 336 | return self.cached_obj |
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| 337 | if self.eof != 0: |
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| 338 | return None |
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| 339 | token = yaml_parser_peek_token(self.parser) |
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| 340 | obj = self._convert_token(token) |
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| 341 | if token.type == YAML_STREAM_END_TOKEN: |
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| 342 | self.eof = 1 |
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| 343 | self.cached_token = token |
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| 344 | self.cached_obj = obj |
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| 345 | return obj |
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| 346 | |
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| 347 | def check_token(self, *choices): |
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| 348 | cdef yaml_token_t *token |
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| 349 | if self.cached_token != NULL: |
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| 350 | obj = self.cached_obj |
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| 351 | elif self.eof != 0: |
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| 352 | return False |
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| 353 | else: |
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| 354 | token = yaml_parser_peek_token(self.parser) |
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| 355 | obj = self._convert_token(token) |
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| 356 | if token.type == YAML_STREAM_END_TOKEN: |
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| 357 | self.eof = 1 |
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| 358 | self.cached_token = token |
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| 359 | self.cached_obj = obj |
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| 360 | if not choices: |
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| 361 | return True |
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| 362 | for choice in choices: |
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| 363 | if isinstance(obj, choice): |
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| 364 | return True |
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| 365 | return False |
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| 366 | |
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| 367 | def get_event(self): |
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| 368 | cdef yaml_event_t *event |
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| 369 | if self.cached_event != NULL: |
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| 370 | yaml_event_delete(yaml_parser_get_event(self.parser)) |
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| 371 | obj = self.cached_obj |
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| 372 | self.cached_event = NULL |
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| 373 | self.cached_obj = None |
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| 374 | return obj |
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| 375 | if self.eof != 0: |
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| 376 | return None |
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| 377 | event = yaml_parser_get_event(self.parser) |
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| 378 | obj = self._convert_event(event) |
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| 379 | if event.type == YAML_STREAM_END_EVENT: |
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| 380 | self.eof = 1 |
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| 381 | yaml_event_delete(event) |
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| 382 | return obj |
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| 383 | |
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| 384 | def peek_event(self): |
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| 385 | cdef yaml_event_t *event |
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| 386 | if self.cached_event != NULL: |
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| 387 | return self.cached_obj |
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| 388 | if self.eof != 0: |
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| 389 | return None |
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| 390 | event = yaml_parser_peek_event(self.parser) |
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| 391 | obj = self._convert_event(event) |
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| 392 | if event.type == YAML_STREAM_END_EVENT: |
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| 393 | self.eof = 1 |
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| 394 | self.cached_event = event |
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| 395 | self.cached_obj = obj |
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| 396 | return obj |
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| 397 | |
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| 398 | def check_event(self, *choices): |
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| 399 | cdef yaml_event_t *event |
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| 400 | if self.cached_event != NULL: |
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| 401 | obj = self.cached_obj |
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| 402 | elif self.eof != 0: |
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| 403 | return False |
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| 404 | else: |
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| 405 | event = yaml_parser_peek_event(self.parser) |
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| 406 | obj = self._convert_event(event) |
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| 407 | if event.type == YAML_STREAM_END_EVENT: |
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| 408 | self.eof = 1 |
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| 409 | self.cached_event = event |
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| 410 | self.cached_obj = obj |
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| 411 | if not choices: |
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| 412 | return True |
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| 413 | for choice in choices: |
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| 414 | if isinstance(obj, choice): |
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| 415 | return True |
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| 416 | return False |
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| 417 | |
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| 418 | class Loader(ScannerAndParser, |
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| 419 | yaml.composer.Composer, |
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| 420 | yaml.constructor.Constructor, |
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| 421 | yaml.resolver.Resolver): |
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| 422 | |
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| 423 | def __init__(self, stream): |
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| 424 | ScannerAndParser.__init__(self, stream) |
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| 425 | yaml.composer.Composer.__init__(self) |
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| 426 | yaml.constructor.Constructor.__init__(self) |
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| 427 | yaml.resolver.Resolver.__init__(self) |
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| 428 | |
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| 429 | yaml.ExtLoader = Loader |
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| 430 | |
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