Scott Baker | bdb962b | 2020-04-03 10:53:36 -0700 | [diff] [blame^] | 1 | package yaml |
| 2 | |
| 3 | import ( |
| 4 | "fmt" |
| 5 | "io" |
| 6 | ) |
| 7 | |
| 8 | // The version directive data. |
| 9 | type yaml_version_directive_t struct { |
| 10 | major int8 // The major version number. |
| 11 | minor int8 // The minor version number. |
| 12 | } |
| 13 | |
| 14 | // The tag directive data. |
| 15 | type yaml_tag_directive_t struct { |
| 16 | handle []byte // The tag handle. |
| 17 | prefix []byte // The tag prefix. |
| 18 | } |
| 19 | |
| 20 | type yaml_encoding_t int |
| 21 | |
| 22 | // The stream encoding. |
| 23 | const ( |
| 24 | // Let the parser choose the encoding. |
| 25 | yaml_ANY_ENCODING yaml_encoding_t = iota |
| 26 | |
| 27 | yaml_UTF8_ENCODING // The default UTF-8 encoding. |
| 28 | yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM. |
| 29 | yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM. |
| 30 | ) |
| 31 | |
| 32 | type yaml_break_t int |
| 33 | |
| 34 | // Line break types. |
| 35 | const ( |
| 36 | // Let the parser choose the break type. |
| 37 | yaml_ANY_BREAK yaml_break_t = iota |
| 38 | |
| 39 | yaml_CR_BREAK // Use CR for line breaks (Mac style). |
| 40 | yaml_LN_BREAK // Use LN for line breaks (Unix style). |
| 41 | yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style). |
| 42 | ) |
| 43 | |
| 44 | type yaml_error_type_t int |
| 45 | |
| 46 | // Many bad things could happen with the parser and emitter. |
| 47 | const ( |
| 48 | // No error is produced. |
| 49 | yaml_NO_ERROR yaml_error_type_t = iota |
| 50 | |
| 51 | yaml_MEMORY_ERROR // Cannot allocate or reallocate a block of memory. |
| 52 | yaml_READER_ERROR // Cannot read or decode the input stream. |
| 53 | yaml_SCANNER_ERROR // Cannot scan the input stream. |
| 54 | yaml_PARSER_ERROR // Cannot parse the input stream. |
| 55 | yaml_COMPOSER_ERROR // Cannot compose a YAML document. |
| 56 | yaml_WRITER_ERROR // Cannot write to the output stream. |
| 57 | yaml_EMITTER_ERROR // Cannot emit a YAML stream. |
| 58 | ) |
| 59 | |
| 60 | // The pointer position. |
| 61 | type yaml_mark_t struct { |
| 62 | index int // The position index. |
| 63 | line int // The position line. |
| 64 | column int // The position column. |
| 65 | } |
| 66 | |
| 67 | // Node Styles |
| 68 | |
| 69 | type yaml_style_t int8 |
| 70 | |
| 71 | type yaml_scalar_style_t yaml_style_t |
| 72 | |
| 73 | // Scalar styles. |
| 74 | const ( |
| 75 | // Let the emitter choose the style. |
| 76 | yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota |
| 77 | |
| 78 | yaml_PLAIN_SCALAR_STYLE // The plain scalar style. |
| 79 | yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style. |
| 80 | yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style. |
| 81 | yaml_LITERAL_SCALAR_STYLE // The literal scalar style. |
| 82 | yaml_FOLDED_SCALAR_STYLE // The folded scalar style. |
| 83 | ) |
| 84 | |
| 85 | type yaml_sequence_style_t yaml_style_t |
| 86 | |
| 87 | // Sequence styles. |
| 88 | const ( |
| 89 | // Let the emitter choose the style. |
| 90 | yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota |
| 91 | |
| 92 | yaml_BLOCK_SEQUENCE_STYLE // The block sequence style. |
| 93 | yaml_FLOW_SEQUENCE_STYLE // The flow sequence style. |
| 94 | ) |
| 95 | |
| 96 | type yaml_mapping_style_t yaml_style_t |
| 97 | |
| 98 | // Mapping styles. |
| 99 | const ( |
| 100 | // Let the emitter choose the style. |
| 101 | yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota |
| 102 | |
| 103 | yaml_BLOCK_MAPPING_STYLE // The block mapping style. |
| 104 | yaml_FLOW_MAPPING_STYLE // The flow mapping style. |
| 105 | ) |
| 106 | |
| 107 | // Tokens |
| 108 | |
| 109 | type yaml_token_type_t int |
| 110 | |
| 111 | // Token types. |
| 112 | const ( |
| 113 | // An empty token. |
| 114 | yaml_NO_TOKEN yaml_token_type_t = iota |
| 115 | |
| 116 | yaml_STREAM_START_TOKEN // A STREAM-START token. |
| 117 | yaml_STREAM_END_TOKEN // A STREAM-END token. |
| 118 | |
| 119 | yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token. |
| 120 | yaml_TAG_DIRECTIVE_TOKEN // A TAG-DIRECTIVE token. |
| 121 | yaml_DOCUMENT_START_TOKEN // A DOCUMENT-START token. |
| 122 | yaml_DOCUMENT_END_TOKEN // A DOCUMENT-END token. |
| 123 | |
| 124 | yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token. |
| 125 | yaml_BLOCK_MAPPING_START_TOKEN // A BLOCK-SEQUENCE-END token. |
| 126 | yaml_BLOCK_END_TOKEN // A BLOCK-END token. |
| 127 | |
| 128 | yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token. |
| 129 | yaml_FLOW_SEQUENCE_END_TOKEN // A FLOW-SEQUENCE-END token. |
| 130 | yaml_FLOW_MAPPING_START_TOKEN // A FLOW-MAPPING-START token. |
| 131 | yaml_FLOW_MAPPING_END_TOKEN // A FLOW-MAPPING-END token. |
| 132 | |
| 133 | yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token. |
| 134 | yaml_FLOW_ENTRY_TOKEN // A FLOW-ENTRY token. |
| 135 | yaml_KEY_TOKEN // A KEY token. |
| 136 | yaml_VALUE_TOKEN // A VALUE token. |
| 137 | |
| 138 | yaml_ALIAS_TOKEN // An ALIAS token. |
| 139 | yaml_ANCHOR_TOKEN // An ANCHOR token. |
| 140 | yaml_TAG_TOKEN // A TAG token. |
| 141 | yaml_SCALAR_TOKEN // A SCALAR token. |
| 142 | ) |
| 143 | |
| 144 | func (tt yaml_token_type_t) String() string { |
| 145 | switch tt { |
| 146 | case yaml_NO_TOKEN: |
| 147 | return "yaml_NO_TOKEN" |
| 148 | case yaml_STREAM_START_TOKEN: |
| 149 | return "yaml_STREAM_START_TOKEN" |
| 150 | case yaml_STREAM_END_TOKEN: |
| 151 | return "yaml_STREAM_END_TOKEN" |
| 152 | case yaml_VERSION_DIRECTIVE_TOKEN: |
| 153 | return "yaml_VERSION_DIRECTIVE_TOKEN" |
| 154 | case yaml_TAG_DIRECTIVE_TOKEN: |
| 155 | return "yaml_TAG_DIRECTIVE_TOKEN" |
| 156 | case yaml_DOCUMENT_START_TOKEN: |
| 157 | return "yaml_DOCUMENT_START_TOKEN" |
| 158 | case yaml_DOCUMENT_END_TOKEN: |
| 159 | return "yaml_DOCUMENT_END_TOKEN" |
| 160 | case yaml_BLOCK_SEQUENCE_START_TOKEN: |
| 161 | return "yaml_BLOCK_SEQUENCE_START_TOKEN" |
| 162 | case yaml_BLOCK_MAPPING_START_TOKEN: |
| 163 | return "yaml_BLOCK_MAPPING_START_TOKEN" |
| 164 | case yaml_BLOCK_END_TOKEN: |
| 165 | return "yaml_BLOCK_END_TOKEN" |
| 166 | case yaml_FLOW_SEQUENCE_START_TOKEN: |
| 167 | return "yaml_FLOW_SEQUENCE_START_TOKEN" |
| 168 | case yaml_FLOW_SEQUENCE_END_TOKEN: |
| 169 | return "yaml_FLOW_SEQUENCE_END_TOKEN" |
| 170 | case yaml_FLOW_MAPPING_START_TOKEN: |
| 171 | return "yaml_FLOW_MAPPING_START_TOKEN" |
| 172 | case yaml_FLOW_MAPPING_END_TOKEN: |
| 173 | return "yaml_FLOW_MAPPING_END_TOKEN" |
| 174 | case yaml_BLOCK_ENTRY_TOKEN: |
| 175 | return "yaml_BLOCK_ENTRY_TOKEN" |
| 176 | case yaml_FLOW_ENTRY_TOKEN: |
| 177 | return "yaml_FLOW_ENTRY_TOKEN" |
| 178 | case yaml_KEY_TOKEN: |
| 179 | return "yaml_KEY_TOKEN" |
| 180 | case yaml_VALUE_TOKEN: |
| 181 | return "yaml_VALUE_TOKEN" |
| 182 | case yaml_ALIAS_TOKEN: |
| 183 | return "yaml_ALIAS_TOKEN" |
| 184 | case yaml_ANCHOR_TOKEN: |
| 185 | return "yaml_ANCHOR_TOKEN" |
| 186 | case yaml_TAG_TOKEN: |
| 187 | return "yaml_TAG_TOKEN" |
| 188 | case yaml_SCALAR_TOKEN: |
| 189 | return "yaml_SCALAR_TOKEN" |
| 190 | } |
| 191 | return "<unknown token>" |
| 192 | } |
| 193 | |
| 194 | // The token structure. |
| 195 | type yaml_token_t struct { |
| 196 | // The token type. |
| 197 | typ yaml_token_type_t |
| 198 | |
| 199 | // The start/end of the token. |
| 200 | start_mark, end_mark yaml_mark_t |
| 201 | |
| 202 | // The stream encoding (for yaml_STREAM_START_TOKEN). |
| 203 | encoding yaml_encoding_t |
| 204 | |
| 205 | // The alias/anchor/scalar value or tag/tag directive handle |
| 206 | // (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN). |
| 207 | value []byte |
| 208 | |
| 209 | // The tag suffix (for yaml_TAG_TOKEN). |
| 210 | suffix []byte |
| 211 | |
| 212 | // The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN). |
| 213 | prefix []byte |
| 214 | |
| 215 | // The scalar style (for yaml_SCALAR_TOKEN). |
| 216 | style yaml_scalar_style_t |
| 217 | |
| 218 | // The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN). |
| 219 | major, minor int8 |
| 220 | } |
| 221 | |
| 222 | // Events |
| 223 | |
| 224 | type yaml_event_type_t int8 |
| 225 | |
| 226 | // Event types. |
| 227 | const ( |
| 228 | // An empty event. |
| 229 | yaml_NO_EVENT yaml_event_type_t = iota |
| 230 | |
| 231 | yaml_STREAM_START_EVENT // A STREAM-START event. |
| 232 | yaml_STREAM_END_EVENT // A STREAM-END event. |
| 233 | yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event. |
| 234 | yaml_DOCUMENT_END_EVENT // A DOCUMENT-END event. |
| 235 | yaml_ALIAS_EVENT // An ALIAS event. |
| 236 | yaml_SCALAR_EVENT // A SCALAR event. |
| 237 | yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event. |
| 238 | yaml_SEQUENCE_END_EVENT // A SEQUENCE-END event. |
| 239 | yaml_MAPPING_START_EVENT // A MAPPING-START event. |
| 240 | yaml_MAPPING_END_EVENT // A MAPPING-END event. |
| 241 | ) |
| 242 | |
| 243 | var eventStrings = []string{ |
| 244 | yaml_NO_EVENT: "none", |
| 245 | yaml_STREAM_START_EVENT: "stream start", |
| 246 | yaml_STREAM_END_EVENT: "stream end", |
| 247 | yaml_DOCUMENT_START_EVENT: "document start", |
| 248 | yaml_DOCUMENT_END_EVENT: "document end", |
| 249 | yaml_ALIAS_EVENT: "alias", |
| 250 | yaml_SCALAR_EVENT: "scalar", |
| 251 | yaml_SEQUENCE_START_EVENT: "sequence start", |
| 252 | yaml_SEQUENCE_END_EVENT: "sequence end", |
| 253 | yaml_MAPPING_START_EVENT: "mapping start", |
| 254 | yaml_MAPPING_END_EVENT: "mapping end", |
| 255 | } |
| 256 | |
| 257 | func (e yaml_event_type_t) String() string { |
| 258 | if e < 0 || int(e) >= len(eventStrings) { |
| 259 | return fmt.Sprintf("unknown event %d", e) |
| 260 | } |
| 261 | return eventStrings[e] |
| 262 | } |
| 263 | |
| 264 | // The event structure. |
| 265 | type yaml_event_t struct { |
| 266 | |
| 267 | // The event type. |
| 268 | typ yaml_event_type_t |
| 269 | |
| 270 | // The start and end of the event. |
| 271 | start_mark, end_mark yaml_mark_t |
| 272 | |
| 273 | // The document encoding (for yaml_STREAM_START_EVENT). |
| 274 | encoding yaml_encoding_t |
| 275 | |
| 276 | // The version directive (for yaml_DOCUMENT_START_EVENT). |
| 277 | version_directive *yaml_version_directive_t |
| 278 | |
| 279 | // The list of tag directives (for yaml_DOCUMENT_START_EVENT). |
| 280 | tag_directives []yaml_tag_directive_t |
| 281 | |
| 282 | // The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT). |
| 283 | anchor []byte |
| 284 | |
| 285 | // The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). |
| 286 | tag []byte |
| 287 | |
| 288 | // The scalar value (for yaml_SCALAR_EVENT). |
| 289 | value []byte |
| 290 | |
| 291 | // Is the document start/end indicator implicit, or the tag optional? |
| 292 | // (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT). |
| 293 | implicit bool |
| 294 | |
| 295 | // Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT). |
| 296 | quoted_implicit bool |
| 297 | |
| 298 | // The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). |
| 299 | style yaml_style_t |
| 300 | } |
| 301 | |
| 302 | func (e *yaml_event_t) scalar_style() yaml_scalar_style_t { return yaml_scalar_style_t(e.style) } |
| 303 | func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) } |
| 304 | func (e *yaml_event_t) mapping_style() yaml_mapping_style_t { return yaml_mapping_style_t(e.style) } |
| 305 | |
| 306 | // Nodes |
| 307 | |
| 308 | const ( |
| 309 | yaml_NULL_TAG = "tag:yaml.org,2002:null" // The tag !!null with the only possible value: null. |
| 310 | yaml_BOOL_TAG = "tag:yaml.org,2002:bool" // The tag !!bool with the values: true and false. |
| 311 | yaml_STR_TAG = "tag:yaml.org,2002:str" // The tag !!str for string values. |
| 312 | yaml_INT_TAG = "tag:yaml.org,2002:int" // The tag !!int for integer values. |
| 313 | yaml_FLOAT_TAG = "tag:yaml.org,2002:float" // The tag !!float for float values. |
| 314 | yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values. |
| 315 | |
| 316 | yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences. |
| 317 | yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping. |
| 318 | |
| 319 | // Not in original libyaml. |
| 320 | yaml_BINARY_TAG = "tag:yaml.org,2002:binary" |
| 321 | yaml_MERGE_TAG = "tag:yaml.org,2002:merge" |
| 322 | |
| 323 | yaml_DEFAULT_SCALAR_TAG = yaml_STR_TAG // The default scalar tag is !!str. |
| 324 | yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq. |
| 325 | yaml_DEFAULT_MAPPING_TAG = yaml_MAP_TAG // The default mapping tag is !!map. |
| 326 | ) |
| 327 | |
| 328 | type yaml_node_type_t int |
| 329 | |
| 330 | // Node types. |
| 331 | const ( |
| 332 | // An empty node. |
| 333 | yaml_NO_NODE yaml_node_type_t = iota |
| 334 | |
| 335 | yaml_SCALAR_NODE // A scalar node. |
| 336 | yaml_SEQUENCE_NODE // A sequence node. |
| 337 | yaml_MAPPING_NODE // A mapping node. |
| 338 | ) |
| 339 | |
| 340 | // An element of a sequence node. |
| 341 | type yaml_node_item_t int |
| 342 | |
| 343 | // An element of a mapping node. |
| 344 | type yaml_node_pair_t struct { |
| 345 | key int // The key of the element. |
| 346 | value int // The value of the element. |
| 347 | } |
| 348 | |
| 349 | // The node structure. |
| 350 | type yaml_node_t struct { |
| 351 | typ yaml_node_type_t // The node type. |
| 352 | tag []byte // The node tag. |
| 353 | |
| 354 | // The node data. |
| 355 | |
| 356 | // The scalar parameters (for yaml_SCALAR_NODE). |
| 357 | scalar struct { |
| 358 | value []byte // The scalar value. |
| 359 | length int // The length of the scalar value. |
| 360 | style yaml_scalar_style_t // The scalar style. |
| 361 | } |
| 362 | |
| 363 | // The sequence parameters (for YAML_SEQUENCE_NODE). |
| 364 | sequence struct { |
| 365 | items_data []yaml_node_item_t // The stack of sequence items. |
| 366 | style yaml_sequence_style_t // The sequence style. |
| 367 | } |
| 368 | |
| 369 | // The mapping parameters (for yaml_MAPPING_NODE). |
| 370 | mapping struct { |
| 371 | pairs_data []yaml_node_pair_t // The stack of mapping pairs (key, value). |
| 372 | pairs_start *yaml_node_pair_t // The beginning of the stack. |
| 373 | pairs_end *yaml_node_pair_t // The end of the stack. |
| 374 | pairs_top *yaml_node_pair_t // The top of the stack. |
| 375 | style yaml_mapping_style_t // The mapping style. |
| 376 | } |
| 377 | |
| 378 | start_mark yaml_mark_t // The beginning of the node. |
| 379 | end_mark yaml_mark_t // The end of the node. |
| 380 | |
| 381 | } |
| 382 | |
| 383 | // The document structure. |
| 384 | type yaml_document_t struct { |
| 385 | |
| 386 | // The document nodes. |
| 387 | nodes []yaml_node_t |
| 388 | |
| 389 | // The version directive. |
| 390 | version_directive *yaml_version_directive_t |
| 391 | |
| 392 | // The list of tag directives. |
| 393 | tag_directives_data []yaml_tag_directive_t |
| 394 | tag_directives_start int // The beginning of the tag directives list. |
| 395 | tag_directives_end int // The end of the tag directives list. |
| 396 | |
| 397 | start_implicit int // Is the document start indicator implicit? |
| 398 | end_implicit int // Is the document end indicator implicit? |
| 399 | |
| 400 | // The start/end of the document. |
| 401 | start_mark, end_mark yaml_mark_t |
| 402 | } |
| 403 | |
| 404 | // The prototype of a read handler. |
| 405 | // |
| 406 | // The read handler is called when the parser needs to read more bytes from the |
| 407 | // source. The handler should write not more than size bytes to the buffer. |
| 408 | // The number of written bytes should be set to the size_read variable. |
| 409 | // |
| 410 | // [in,out] data A pointer to an application data specified by |
| 411 | // yaml_parser_set_input(). |
| 412 | // [out] buffer The buffer to write the data from the source. |
| 413 | // [in] size The size of the buffer. |
| 414 | // [out] size_read The actual number of bytes read from the source. |
| 415 | // |
| 416 | // On success, the handler should return 1. If the handler failed, |
| 417 | // the returned value should be 0. On EOF, the handler should set the |
| 418 | // size_read to 0 and return 1. |
| 419 | type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error) |
| 420 | |
| 421 | // This structure holds information about a potential simple key. |
| 422 | type yaml_simple_key_t struct { |
| 423 | possible bool // Is a simple key possible? |
| 424 | required bool // Is a simple key required? |
| 425 | token_number int // The number of the token. |
| 426 | mark yaml_mark_t // The position mark. |
| 427 | } |
| 428 | |
| 429 | // The states of the parser. |
| 430 | type yaml_parser_state_t int |
| 431 | |
| 432 | const ( |
| 433 | yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota |
| 434 | |
| 435 | yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE // Expect the beginning of an implicit document. |
| 436 | yaml_PARSE_DOCUMENT_START_STATE // Expect DOCUMENT-START. |
| 437 | yaml_PARSE_DOCUMENT_CONTENT_STATE // Expect the content of a document. |
| 438 | yaml_PARSE_DOCUMENT_END_STATE // Expect DOCUMENT-END. |
| 439 | yaml_PARSE_BLOCK_NODE_STATE // Expect a block node. |
| 440 | yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence. |
| 441 | yaml_PARSE_FLOW_NODE_STATE // Expect a flow node. |
| 442 | yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a block sequence. |
| 443 | yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE // Expect an entry of a block sequence. |
| 444 | yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE // Expect an entry of an indentless sequence. |
| 445 | yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping. |
| 446 | yaml_PARSE_BLOCK_MAPPING_KEY_STATE // Expect a block mapping key. |
| 447 | yaml_PARSE_BLOCK_MAPPING_VALUE_STATE // Expect a block mapping value. |
| 448 | yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a flow sequence. |
| 449 | yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE // Expect an entry of a flow sequence. |
| 450 | yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE // Expect a key of an ordered mapping. |
| 451 | yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping. |
| 452 | yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE // Expect the and of an ordered mapping entry. |
| 453 | yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping. |
| 454 | yaml_PARSE_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping. |
| 455 | yaml_PARSE_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping. |
| 456 | yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE // Expect an empty value of a flow mapping. |
| 457 | yaml_PARSE_END_STATE // Expect nothing. |
| 458 | ) |
| 459 | |
| 460 | func (ps yaml_parser_state_t) String() string { |
| 461 | switch ps { |
| 462 | case yaml_PARSE_STREAM_START_STATE: |
| 463 | return "yaml_PARSE_STREAM_START_STATE" |
| 464 | case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE: |
| 465 | return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE" |
| 466 | case yaml_PARSE_DOCUMENT_START_STATE: |
| 467 | return "yaml_PARSE_DOCUMENT_START_STATE" |
| 468 | case yaml_PARSE_DOCUMENT_CONTENT_STATE: |
| 469 | return "yaml_PARSE_DOCUMENT_CONTENT_STATE" |
| 470 | case yaml_PARSE_DOCUMENT_END_STATE: |
| 471 | return "yaml_PARSE_DOCUMENT_END_STATE" |
| 472 | case yaml_PARSE_BLOCK_NODE_STATE: |
| 473 | return "yaml_PARSE_BLOCK_NODE_STATE" |
| 474 | case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: |
| 475 | return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE" |
| 476 | case yaml_PARSE_FLOW_NODE_STATE: |
| 477 | return "yaml_PARSE_FLOW_NODE_STATE" |
| 478 | case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: |
| 479 | return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE" |
| 480 | case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: |
| 481 | return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE" |
| 482 | case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: |
| 483 | return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE" |
| 484 | case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: |
| 485 | return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE" |
| 486 | case yaml_PARSE_BLOCK_MAPPING_KEY_STATE: |
| 487 | return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE" |
| 488 | case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE: |
| 489 | return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE" |
| 490 | case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: |
| 491 | return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE" |
| 492 | case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE: |
| 493 | return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE" |
| 494 | case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: |
| 495 | return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE" |
| 496 | case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: |
| 497 | return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE" |
| 498 | case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: |
| 499 | return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE" |
| 500 | case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: |
| 501 | return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE" |
| 502 | case yaml_PARSE_FLOW_MAPPING_KEY_STATE: |
| 503 | return "yaml_PARSE_FLOW_MAPPING_KEY_STATE" |
| 504 | case yaml_PARSE_FLOW_MAPPING_VALUE_STATE: |
| 505 | return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE" |
| 506 | case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: |
| 507 | return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE" |
| 508 | case yaml_PARSE_END_STATE: |
| 509 | return "yaml_PARSE_END_STATE" |
| 510 | } |
| 511 | return "<unknown parser state>" |
| 512 | } |
| 513 | |
| 514 | // This structure holds aliases data. |
| 515 | type yaml_alias_data_t struct { |
| 516 | anchor []byte // The anchor. |
| 517 | index int // The node id. |
| 518 | mark yaml_mark_t // The anchor mark. |
| 519 | } |
| 520 | |
| 521 | // The parser structure. |
| 522 | // |
| 523 | // All members are internal. Manage the structure using the |
| 524 | // yaml_parser_ family of functions. |
| 525 | type yaml_parser_t struct { |
| 526 | |
| 527 | // Error handling |
| 528 | |
| 529 | error yaml_error_type_t // Error type. |
| 530 | |
| 531 | problem string // Error description. |
| 532 | |
| 533 | // The byte about which the problem occurred. |
| 534 | problem_offset int |
| 535 | problem_value int |
| 536 | problem_mark yaml_mark_t |
| 537 | |
| 538 | // The error context. |
| 539 | context string |
| 540 | context_mark yaml_mark_t |
| 541 | |
| 542 | // Reader stuff |
| 543 | |
| 544 | read_handler yaml_read_handler_t // Read handler. |
| 545 | |
| 546 | input_reader io.Reader // File input data. |
| 547 | input []byte // String input data. |
| 548 | input_pos int |
| 549 | |
| 550 | eof bool // EOF flag |
| 551 | |
| 552 | buffer []byte // The working buffer. |
| 553 | buffer_pos int // The current position of the buffer. |
| 554 | |
| 555 | unread int // The number of unread characters in the buffer. |
| 556 | |
| 557 | raw_buffer []byte // The raw buffer. |
| 558 | raw_buffer_pos int // The current position of the buffer. |
| 559 | |
| 560 | encoding yaml_encoding_t // The input encoding. |
| 561 | |
| 562 | offset int // The offset of the current position (in bytes). |
| 563 | mark yaml_mark_t // The mark of the current position. |
| 564 | |
| 565 | // Scanner stuff |
| 566 | |
| 567 | stream_start_produced bool // Have we started to scan the input stream? |
| 568 | stream_end_produced bool // Have we reached the end of the input stream? |
| 569 | |
| 570 | flow_level int // The number of unclosed '[' and '{' indicators. |
| 571 | |
| 572 | tokens []yaml_token_t // The tokens queue. |
| 573 | tokens_head int // The head of the tokens queue. |
| 574 | tokens_parsed int // The number of tokens fetched from the queue. |
| 575 | token_available bool // Does the tokens queue contain a token ready for dequeueing. |
| 576 | |
| 577 | indent int // The current indentation level. |
| 578 | indents []int // The indentation levels stack. |
| 579 | |
| 580 | simple_key_allowed bool // May a simple key occur at the current position? |
| 581 | simple_keys []yaml_simple_key_t // The stack of simple keys. |
| 582 | |
| 583 | // Parser stuff |
| 584 | |
| 585 | state yaml_parser_state_t // The current parser state. |
| 586 | states []yaml_parser_state_t // The parser states stack. |
| 587 | marks []yaml_mark_t // The stack of marks. |
| 588 | tag_directives []yaml_tag_directive_t // The list of TAG directives. |
| 589 | |
| 590 | // Dumper stuff |
| 591 | |
| 592 | aliases []yaml_alias_data_t // The alias data. |
| 593 | |
| 594 | document *yaml_document_t // The currently parsed document. |
| 595 | } |
| 596 | |
| 597 | // Emitter Definitions |
| 598 | |
| 599 | // The prototype of a write handler. |
| 600 | // |
| 601 | // The write handler is called when the emitter needs to flush the accumulated |
| 602 | // characters to the output. The handler should write @a size bytes of the |
| 603 | // @a buffer to the output. |
| 604 | // |
| 605 | // @param[in,out] data A pointer to an application data specified by |
| 606 | // yaml_emitter_set_output(). |
| 607 | // @param[in] buffer The buffer with bytes to be written. |
| 608 | // @param[in] size The size of the buffer. |
| 609 | // |
| 610 | // @returns On success, the handler should return @c 1. If the handler failed, |
| 611 | // the returned value should be @c 0. |
| 612 | // |
| 613 | type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error |
| 614 | |
| 615 | type yaml_emitter_state_t int |
| 616 | |
| 617 | // The emitter states. |
| 618 | const ( |
| 619 | // Expect STREAM-START. |
| 620 | yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota |
| 621 | |
| 622 | yaml_EMIT_FIRST_DOCUMENT_START_STATE // Expect the first DOCUMENT-START or STREAM-END. |
| 623 | yaml_EMIT_DOCUMENT_START_STATE // Expect DOCUMENT-START or STREAM-END. |
| 624 | yaml_EMIT_DOCUMENT_CONTENT_STATE // Expect the content of a document. |
| 625 | yaml_EMIT_DOCUMENT_END_STATE // Expect DOCUMENT-END. |
| 626 | yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a flow sequence. |
| 627 | yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE // Expect an item of a flow sequence. |
| 628 | yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping. |
| 629 | yaml_EMIT_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping. |
| 630 | yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a flow mapping. |
| 631 | yaml_EMIT_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping. |
| 632 | yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a block sequence. |
| 633 | yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE // Expect an item of a block sequence. |
| 634 | yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping. |
| 635 | yaml_EMIT_BLOCK_MAPPING_KEY_STATE // Expect the key of a block mapping. |
| 636 | yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping. |
| 637 | yaml_EMIT_BLOCK_MAPPING_VALUE_STATE // Expect a value of a block mapping. |
| 638 | yaml_EMIT_END_STATE // Expect nothing. |
| 639 | ) |
| 640 | |
| 641 | // The emitter structure. |
| 642 | // |
| 643 | // All members are internal. Manage the structure using the @c yaml_emitter_ |
| 644 | // family of functions. |
| 645 | type yaml_emitter_t struct { |
| 646 | |
| 647 | // Error handling |
| 648 | |
| 649 | error yaml_error_type_t // Error type. |
| 650 | problem string // Error description. |
| 651 | |
| 652 | // Writer stuff |
| 653 | |
| 654 | write_handler yaml_write_handler_t // Write handler. |
| 655 | |
| 656 | output_buffer *[]byte // String output data. |
| 657 | output_writer io.Writer // File output data. |
| 658 | |
| 659 | buffer []byte // The working buffer. |
| 660 | buffer_pos int // The current position of the buffer. |
| 661 | |
| 662 | raw_buffer []byte // The raw buffer. |
| 663 | raw_buffer_pos int // The current position of the buffer. |
| 664 | |
| 665 | encoding yaml_encoding_t // The stream encoding. |
| 666 | |
| 667 | // Emitter stuff |
| 668 | |
| 669 | canonical bool // If the output is in the canonical style? |
| 670 | best_indent int // The number of indentation spaces. |
| 671 | best_width int // The preferred width of the output lines. |
| 672 | unicode bool // Allow unescaped non-ASCII characters? |
| 673 | line_break yaml_break_t // The preferred line break. |
| 674 | |
| 675 | state yaml_emitter_state_t // The current emitter state. |
| 676 | states []yaml_emitter_state_t // The stack of states. |
| 677 | |
| 678 | events []yaml_event_t // The event queue. |
| 679 | events_head int // The head of the event queue. |
| 680 | |
| 681 | indents []int // The stack of indentation levels. |
| 682 | |
| 683 | tag_directives []yaml_tag_directive_t // The list of tag directives. |
| 684 | |
| 685 | indent int // The current indentation level. |
| 686 | |
| 687 | flow_level int // The current flow level. |
| 688 | |
| 689 | root_context bool // Is it the document root context? |
| 690 | sequence_context bool // Is it a sequence context? |
| 691 | mapping_context bool // Is it a mapping context? |
| 692 | simple_key_context bool // Is it a simple mapping key context? |
| 693 | |
| 694 | line int // The current line. |
| 695 | column int // The current column. |
| 696 | whitespace bool // If the last character was a whitespace? |
| 697 | indention bool // If the last character was an indentation character (' ', '-', '?', ':')? |
| 698 | open_ended bool // If an explicit document end is required? |
| 699 | |
| 700 | // Anchor analysis. |
| 701 | anchor_data struct { |
| 702 | anchor []byte // The anchor value. |
| 703 | alias bool // Is it an alias? |
| 704 | } |
| 705 | |
| 706 | // Tag analysis. |
| 707 | tag_data struct { |
| 708 | handle []byte // The tag handle. |
| 709 | suffix []byte // The tag suffix. |
| 710 | } |
| 711 | |
| 712 | // Scalar analysis. |
| 713 | scalar_data struct { |
| 714 | value []byte // The scalar value. |
| 715 | multiline bool // Does the scalar contain line breaks? |
| 716 | flow_plain_allowed bool // Can the scalar be expessed in the flow plain style? |
| 717 | block_plain_allowed bool // Can the scalar be expressed in the block plain style? |
| 718 | single_quoted_allowed bool // Can the scalar be expressed in the single quoted style? |
| 719 | block_allowed bool // Can the scalar be expressed in the literal or folded styles? |
| 720 | style yaml_scalar_style_t // The output style. |
| 721 | } |
| 722 | |
| 723 | // Dumper stuff |
| 724 | |
| 725 | opened bool // If the stream was already opened? |
| 726 | closed bool // If the stream was already closed? |
| 727 | |
| 728 | // The information associated with the document nodes. |
| 729 | anchors *struct { |
| 730 | references int // The number of references. |
| 731 | anchor int // The anchor id. |
| 732 | serialized bool // If the node has been emitted? |
| 733 | } |
| 734 | |
| 735 | last_anchor_id int // The last assigned anchor id. |
| 736 | |
| 737 | document *yaml_document_t // The currently emitted document. |
| 738 | } |