Passed
Branch master (6715de)
by Frank
03:34
created

yaml.yaml_parser_state_t.String   F

Complexity

Conditions 25

Size

Total Lines 52
Code Lines 51

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
cc 25
eloc 51
nop 0
dl 0
loc 52
rs 0
c 0
b 0
f 0

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

Complexity

Complex classes like yaml.yaml_parser_state_t.String often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.

Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.

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
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	yaml_BLOCK_SEQUENCE_STYLE // The block sequence style.
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	yaml_FLOW_SEQUENCE_STYLE  // The flow sequence style.
94
)
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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
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	yaml_BLOCK_MAPPING_STYLE // The block mapping style.
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	yaml_FLOW_MAPPING_STYLE  // The flow mapping style.
105
)
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// Tokens
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type yaml_token_type_t int
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// Token types.
112
const (
113
	// An empty token.
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	yaml_NO_TOKEN yaml_token_type_t = iota
115
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	yaml_STREAM_START_TOKEN // A STREAM-START token.
117
	yaml_STREAM_END_TOKEN   // A STREAM-END token.
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	yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token.
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	yaml_TAG_DIRECTIVE_TOKEN     // A TAG-DIRECTIVE token.
121
	yaml_DOCUMENT_START_TOKEN    // A DOCUMENT-START token.
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	yaml_DOCUMENT_END_TOKEN      // A DOCUMENT-END token.
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	yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token.
125
	yaml_BLOCK_MAPPING_START_TOKEN  // A BLOCK-SEQUENCE-END token.
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	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.
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	yaml_FLOW_MAPPING_START_TOKEN  // A FLOW-MAPPING-START token.
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	yaml_FLOW_MAPPING_END_TOKEN    // A FLOW-MAPPING-END token.
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	yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token.
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	yaml_FLOW_ENTRY_TOKEN  // A FLOW-ENTRY token.
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	yaml_KEY_TOKEN         // A KEY token.
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	yaml_VALUE_TOKEN       // A VALUE token.
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	yaml_ALIAS_TOKEN  // An ALIAS token.
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	yaml_ANCHOR_TOKEN // An ANCHOR token.
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	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
}
739