1 ! Copyright (C) 2013 Jon Harper.
2 ! See http://factorcode.org/license.txt for BSD license.
3 USING: accessors alien.data arrays assocs byte-arrays
4 classes.struct combinators combinators.extras
5 combinators.short-circuit destructors fry generalizations
6 hashtables hashtables.identity io.encodings.string
7 io.encodings.utf8 kernel libc linked-assocs locals make math
8 math.parser namespaces sequences sets strings yaml.config
9 yaml.conversion yaml.ffi hash-sets.identity ;
13 ERROR: libyaml-parser-error
14 error problem problem_offset
15 problem_value problem_mark context context_mark ;
16 ERROR: libyaml-initialize-error ;
17 ERROR: libyaml-emitter-error error problem ;
19 ERROR: yaml-undefined-anchor anchor anchors ;
20 ERROR: yaml-unexpected-event actual expected ;
21 ERROR: yaml-no-document ;
25 : yaml-initialize-assert-ok ( ? -- )
26 [ libyaml-initialize-error ] unless ;
28 : (libyaml-parser-error) ( parser -- )
37 } cleave [ clone ] 7 napply libyaml-parser-error ;
39 : (libyaml-emitter-error) ( emitter -- )
40 [ error>> ] [ problem>> ] bi [ clone ] bi@ libyaml-emitter-error ;
42 : yaml-parser-assert-ok ( ? parser -- )
43 swap [ drop ] [ (libyaml-parser-error) ] if ;
45 : yaml-emitter-assert-ok ( ? emitter -- )
46 swap [ drop ] [ (libyaml-emitter-error) ] if ;
48 : yaml_parser_parse_asserted ( parser event -- )
49 [ yaml_parser_parse ] [ drop yaml-parser-assert-ok ] 2bi ;
51 : yaml_emitter_emit_asserted ( emitter event -- )
52 [ yaml_emitter_emit ] [ drop yaml-emitter-assert-ok ] 2bi ;
54 TUPLE: yaml-alias anchor ;
55 C: <yaml-alias> yaml-alias
59 : ?register-anchor ( obj event -- obj )
60 dupd anchor>> [ anchors get set-at ] [ drop ] if* ;
62 : assert-anchor-exists ( anchor -- )
63 anchors get 2dup at* nip
64 [ 2drop ] [ yaml-undefined-anchor ] if ;
66 : deref-anchor ( event -- obj )
67 data>> alias>> anchor>>
68 [ assert-anchor-exists ]
71 : event>scalar ( mapping-key? event -- obj )
73 [ swap construct-scalar ]
74 [ ?register-anchor ] bi ;
76 ! TODO simplify this ?!?
77 TUPLE: factor_sequence_start_event_data anchor tag implicit style ;
78 TUPLE: factor_mapping_start_event_data anchor tag implicit style ;
79 TUPLE: factor_event_data sequence_start mapping_start ;
80 TUPLE: factor_yaml_event_t type data start_mark end_mark ;
82 : deep-copy-seq ( data -- data' )
88 } cleave factor_sequence_start_event_data boa ;
90 : deep-copy-map ( data -- data' )
96 } cleave factor_mapping_start_event_data boa ;
98 : deep-copy-data ( event -- data )
99 [ data>> ] [ type>> ] bi {
100 { YAML_SEQUENCE_START_EVENT [ sequence_start>> deep-copy-seq f ] }
101 { YAML_MAPPING_START_EVENT [ mapping_start>> deep-copy-map f swap ] }
102 } case factor_event_data boa ;
104 : deep-copy-event ( event -- event' )
110 } cleave factor_yaml_event_t boa ;
112 : (?scalar-value) ( mapping-key? event -- scalar/event scalar? )
114 { YAML_SCALAR_EVENT [ event>scalar t ] }
115 { YAML_ALIAS_EVENT [ nip deref-anchor t ] }
116 [ drop nip deep-copy-event f ]
118 : ?mapping-key-scalar-value ( event -- scalar/event scalar? ) t swap (?scalar-value) ;
119 : ?scalar-value ( event -- scalar/event scalar? ) f swap (?scalar-value) ;
121 ! Must not reuse the event struct before with-destructors scope ends
122 : next-event ( parser event -- event )
123 [ yaml_parser_parse_asserted ] [ &yaml_event_delete ] bi ;
125 DEFER: parse-sequence
128 : (parse-sequence) ( parser event prev-event -- obj )
129 data>> sequence_start>> [ [ 2drop f ] dip ?register-anchor drop ]
130 [ [ parse-sequence ] [ construct-sequence ] bi* ] [ 2nip ?register-anchor ] 3tri ;
132 : (parse-mapping) ( parser event prev-event -- obj )
133 data>> mapping_start>> [ [ 2drop f ] dip ?register-anchor drop ]
134 [ [ parse-mapping ] [ construct-mapping ] bi* ] [ 2nip ?register-anchor ] 3tri ;
136 : next-complex-value ( parser event prev-event -- obj )
138 { YAML_SEQUENCE_START_EVENT [ (parse-sequence) ] }
139 { YAML_MAPPING_START_EVENT [ (parse-mapping) ] }
142 :: next-value ( parser event -- obj )
143 parser event [ next-event ?scalar-value ] with-destructors
144 [ [ parser event ] dip next-complex-value ] unless ;
146 :: parse-mapping ( parser event -- map )
151 parser event next-event type>>
152 YAML_MAPPING_END_EVENT = [
155 event ?mapping-key-scalar-value
159 [ [ parser event ] dip next-complex-value ] unless
160 parser event next-value swap ,,
165 :: parse-sequence ( parser event -- seq )
170 parser event next-event type>>
171 YAML_SEQUENCE_END_EVENT = [
178 [ [ parser event ] dip next-complex-value ] unless ,
183 : expect-event ( parser event type -- )
185 [ next-event type>> ] dip 2dup =
186 [ 2drop ] [ 1array yaml-unexpected-event ] if
189 ! Same as 'with', but for combinators that
190 ! put 2 arguments on the stack
191 : with2 ( param obj quot -- obj curry )
192 swapd '[ [ _ ] 2dip @ ] ; inline
194 GENERIC: (deref-aliases) ( anchors obj -- obj' )
196 M: object (deref-aliases) nip ;
198 M: byte-array (deref-aliases) nip ;
200 M: string (deref-aliases) nip ;
202 M: yaml-alias (deref-aliases) anchor>> of ;
204 M: sequence (deref-aliases)
205 [ (deref-aliases) ] with map! ;
207 M: set (deref-aliases)
208 [ members (deref-aliases) ] [ clear-set ] [ swap union! ] tri ;
210 : assoc-map! ( assoc quot -- assoc' )
211 [ assoc-map ] [ drop clear-assoc ] [ drop swap assoc-union! ] 2tri ; inline
213 M: assoc (deref-aliases)
214 [ [ (deref-aliases) ] bi-curry@ bi ] with2 assoc-map! ;
216 : merge-values ( seq -- assoc )
217 reverse unclip [ assoc-union ] reduce ;
218 GENERIC: merge-value ( assoc value -- assoc' )
219 M: sequence merge-value merge-values merge-value ;
220 M: assoc merge-value over assoc-diff assoc-union! ;
221 : pop-at* ( key assoc -- value/f ? )
222 [ at* ] 2keep pick [ delete-at ] [ 2drop ] if ;
224 : ?apply-default-key ( assoc -- obj' )
225 T{ yaml-value } over pop-at* [ nip ] [ drop ] if ;
228 : ?apply-merge-key ( assoc -- assoc' )
229 T{ yaml-merge } over pop-at*
230 [ merge-value ] [ drop ] if ;
231 : scalar-value ( obj -- obj' )
232 dup hashtable? [ ?apply-default-key ] when ;
236 GENERIC: apply-merge-keys ( already-applied-set obj -- obj' )
237 : ?apply-merge-keys ( set obj -- obj' )
238 2dup swap in? [ nip ] [ 2dup swap adjoin apply-merge-keys ] if ;
239 M: sequence apply-merge-keys
240 [ ?apply-merge-keys ] with map! ;
241 M: object apply-merge-keys nip ;
242 M: byte-array apply-merge-keys nip ;
243 M: string apply-merge-keys nip ;
244 M: assoc apply-merge-keys
245 [ [ ?apply-merge-keys ] bi-curry@ bi ] with2 assoc-map!
246 merge get [ ?apply-merge-key ] when
247 value get [ ?apply-default-key ] when ;
249 :: parse-yaml-doc ( parser event -- obj )
251 parser event next-value
252 anchors get swap (deref-aliases)
253 merge get value get or [ IHS{ } clone swap ?apply-merge-keys ] when
256 :: ?parse-yaml-doc ( parser event -- obj/f ? )
258 parser event next-event type>> {
259 { YAML_DOCUMENT_START_EVENT [ t ] }
260 { YAML_STREAM_END_EVENT [ f ] }
261 [ { YAML_DOCUMENT_START_EVENT YAML_STREAM_END_EVENT } yaml-unexpected-event ]
264 parser event parse-yaml-doc t
265 parser event YAML_DOCUMENT_END_EVENT expect-event
268 ! registers destructors (use with with-destructors)
269 :: init-parser ( str -- parser event )
270 yaml_parser_t (malloc-struct) &free :> parser
271 parser yaml_parser_initialize yaml-initialize-assert-ok
272 parser &yaml_parser_delete drop
275 [ malloc-byte-array &free ] [ length ] bi :> ( input length )
276 parser input length yaml_parser_set_input_string
278 yaml_event_t (malloc-struct) &free :> event
283 : yaml> ( str -- obj )
286 [ YAML_STREAM_START_EVENT expect-event ]
287 [ ?parse-yaml-doc [ yaml-no-document ] unless ] 2bi
290 : yaml-docs> ( str -- arr )
293 [ YAML_STREAM_START_EVENT expect-event ]
294 [ [ ?parse-yaml-doc ] 2curry [ ] produce nip ] 2bi
299 TUPLE: yaml-anchors objects new-objects next-anchor ;
301 : <yaml-anchors> ( -- yaml-anchors )
302 IH{ } clone IH{ } clone 0 yaml-anchors boa ;
304 GENERIC: (replace-aliases) ( yaml-anchors obj -- obj' )
306 : incr-anchor ( yaml-anchors -- current-anchor )
308 [ [ number>string ] [ 1 + ] bi ]
309 [ next-anchor<< ] bi*
312 :: (?replace-aliases) ( yaml-anchors obj -- obj' )
313 yaml-anchors objects>> :> objects
315 [ yaml-anchors incr-anchor dup obj objects set-at ] unless*
318 drop f obj objects set-at
319 yaml-anchors obj (replace-aliases) :> obj'
320 obj obj' yaml-anchors new-objects>> set-at
324 : ?replace-aliases ( yaml-anchors obj -- obj' )
325 dup fixnum? [ nip ] [ (?replace-aliases) ] if ;
327 M: object (replace-aliases) nip ;
329 M: byte-array (replace-aliases) nip ;
331 M: string (replace-aliases) nip ;
333 M: sequence (replace-aliases)
334 [ ?replace-aliases ] with map ;
336 M: set (replace-aliases)
337 [ members (replace-aliases) ] keep set-like ;
339 M: assoc (replace-aliases)
340 swap '[ [ _ swap ?replace-aliases ] bi@ ] assoc-map ;
342 TUPLE: yaml-anchor anchor obj ;
343 C: <yaml-anchor> yaml-anchor
345 GENERIC: (replace-anchors) ( yaml-anchors obj -- obj' )
347 : (get-anchor) ( yaml-anchors obj -- anchor/f )
350 : get-anchor ( yaml-anchors obj -- anchor/f )
351 { [ (get-anchor) ] [ over new-objects>> at (get-anchor) ] } 2|| ;
353 : ?replace-anchors ( yaml-anchors obj -- obj' )
354 [ (replace-anchors) ] [ get-anchor ] 2bi [ swap <yaml-anchor> ] when* ;
356 M: object (replace-anchors) nip ;
358 M: byte-array (replace-anchors) nip ;
360 M: string (replace-anchors) nip ;
362 M: sequence (replace-anchors)
363 [ ?replace-anchors ] with map ;
365 M: set (replace-anchors)
366 [ members ?replace-anchors ] keep set-like ;
368 M: assoc (replace-anchors)
369 swap '[ [ _ swap ?replace-anchors ] bi@ ] assoc-map ;
371 : replace-identities ( obj -- obj' )
372 [ <yaml-anchors> ] dip dupd ?replace-aliases ?replace-anchors ;
374 ! TODO We can also pass some data when registering the write handler,
375 ! use this to have several buffers if it can be interrupted.
376 ! For now, only do operations on strings that are in memory
377 ! so we don't need to be reentrant.
378 SYMBOL: yaml-write-buffer
379 : yaml-write-handler ( -- alien )
381 memory>byte-array yaml-write-buffer get-global
383 ] yaml_write_handler_t ;
385 GENERIC: emit-value ( emitter event anchor obj -- )
387 : emit-object ( emitter event obj -- ) [ f ] dip emit-value ;
389 : scalar-implicit-tag? ( tag str mapping-key? -- plain_implicit quoted_implicit )
391 resolve-plain-scalar = t
394 :: (emit-scalar) ( emitter event anchor obj mapping-key? -- )
396 obj [ yaml-tag ] [ represent-scalar ] bi
397 -1 2over mapping-key? scalar-implicit-tag? YAML_ANY_SCALAR_STYLE
398 yaml_scalar_event_initialize yaml-initialize-assert-ok
399 emitter event yaml_emitter_emit_asserted ;
401 : emit-mapping-key-scalar ( emitter event anchor obj -- ) t (emit-scalar) ;
402 : emit-scalar ( emitter event anchor obj -- ) f (emit-scalar) ;
404 ! strings and special keys are the only things that need special treatment
405 ! because they can have the same representation
406 : emit-mapping-key ( emitter event obj -- )
407 dup { [ string? ] [ yaml-merge? ] [ yaml-value? ] } 1||
408 [ [ f ] dip emit-mapping-key-scalar ] [ emit-object ] if ;
410 M: object emit-value ( emitter event anchor obj -- ) emit-scalar ;
412 M: yaml-anchor emit-value ( emitter event unused obj -- )
413 nip [ anchor>> ] [ obj>> ] bi emit-value ;
415 M:: yaml-alias emit-value ( emitter event unused obj -- )
416 event obj anchor>> yaml_alias_event_initialize yaml-initialize-assert-ok
417 emitter event yaml_emitter_emit_asserted ;
419 :: emit-sequence-start ( emitter event anchor tag implicit -- )
420 event anchor tag implicit YAML_ANY_SEQUENCE_STYLE
421 yaml_sequence_start_event_initialize yaml-initialize-assert-ok
422 emitter event yaml_emitter_emit_asserted ;
424 : emit-sequence-end ( emitter event -- )
425 dup yaml_sequence_end_event_initialize yaml-initialize-assert-ok
426 yaml_emitter_emit_asserted ;
428 : emit-sequence-body ( emitter event seq -- )
429 [ emit-object ] with with each ;
431 : emit-assoc-body ( emitter event assoc -- )
434 [ emit-object ] bi-curry* 2bi
435 ] with2 with2 assoc-each ;
437 : emit-linked-assoc-body ( emitter event linked-assoc -- )
438 >alist [ first2 swap associate ] map emit-sequence-body ;
440 : emit-set-body ( emitter event set -- )
441 [ members ] [ cardinality f <array> ] bi zip concat emit-sequence-body ;
443 M: f emit-value ( emitter event anchor f -- ) emit-scalar ;
445 M: string emit-value ( emitter event anchor string -- ) emit-scalar ;
447 M: byte-array emit-value ( emitter event anchor byte-array -- ) emit-scalar ;
449 M: sequence emit-value ( emitter event anchor seq -- )
450 [ drop YAML_SEQ_TAG implicit-tags get emit-sequence-start ]
451 [ nip emit-sequence-body ]
452 [ 2drop emit-sequence-end ] 4tri ;
454 M: linked-assoc emit-value ( emitter event anchor assoc -- )
455 [ drop YAML_OMAP_TAG f emit-sequence-start ]
456 [ nip emit-linked-assoc-body ]
457 [ 2drop emit-sequence-end ] 4tri ;
459 :: emit-assoc-start ( emitter event anchor tag implicit -- )
460 event anchor tag implicit YAML_ANY_MAPPING_STYLE
461 yaml_mapping_start_event_initialize yaml-initialize-assert-ok
462 emitter event yaml_emitter_emit_asserted ;
464 : emit-assoc-end ( emitter event -- )
465 dup yaml_mapping_end_event_initialize yaml-initialize-assert-ok
466 yaml_emitter_emit_asserted ;
468 M: assoc emit-value ( emitter event anchor assoc -- )
469 [ drop YAML_MAP_TAG implicit-tags get emit-assoc-start ]
470 [ nip emit-assoc-body ]
471 [ 2drop emit-assoc-end ] 4tri ;
473 M: set emit-value ( emitter event anchor set -- )
474 [ drop YAML_SET_TAG f emit-assoc-start ]
475 [ nip emit-set-body ]
476 [ 2drop emit-assoc-end ] 4tri ;
478 : unless-libyaml-default ( variable quot -- )
479 [ get dup +libyaml-default+ = not ] dip
480 [ 2drop ] if ; inline
482 : init-emitter-options ( emitter -- )
484 [ emitter-canonical [ yaml_emitter_set_canonical ] unless-libyaml-default ]
485 [ emitter-indent [ yaml_emitter_set_indent ] unless-libyaml-default ]
486 [ emitter-width [ yaml_emitter_set_width ] unless-libyaml-default ]
487 [ emitter-unicode [ yaml_emitter_set_unicode ] unless-libyaml-default ]
488 [ emitter-line-break [ yaml_emitter_set_break ] unless-libyaml-default ]
491 ! registers destructors (use with with-destructors)
492 :: init-emitter ( -- emitter event )
493 yaml_emitter_t (malloc-struct) &free :> emitter
494 emitter yaml_emitter_initialize yaml-initialize-assert-ok
495 emitter &yaml_emitter_delete drop
496 emitter init-emitter-options
498 BV{ } clone :> output
499 output yaml-write-buffer set-global
500 emitter yaml-write-handler f yaml_emitter_set_output
502 yaml_event_t (malloc-struct) &free :> event
504 event YAML_UTF8_ENCODING
505 yaml_stream_start_event_initialize yaml-initialize-assert-ok
507 emitter event yaml_emitter_emit_asserted
510 :: emit-doc ( emitter event obj -- )
511 event f f f implicit-start get yaml_document_start_event_initialize yaml-initialize-assert-ok
512 emitter event yaml_emitter_emit_asserted
514 emitter event obj emit-object
516 event implicit-end get yaml_document_end_event_initialize yaml-initialize-assert-ok
517 emitter event yaml_emitter_emit_asserted ;
519 :: flush-emitter ( emitter event -- str )
520 event yaml_stream_end_event_initialize yaml-initialize-assert-ok
521 emitter event yaml_emitter_emit_asserted
523 emitter [ yaml_emitter_flush ] [ yaml-emitter-assert-ok ] bi
524 yaml-write-buffer get utf8 decode ;
528 : >yaml ( obj -- str )
531 [ replace-identities emit-doc ] [ drop flush-emitter ] 3bi
534 : >yaml-docs ( seq -- str )
537 [ [ replace-identities emit-doc ] with with each ] [ drop flush-emitter ] 3bi