1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
|
#
# content.py
#
# Parse comment blocks to build content blocks (library file).
#
# Copyright 2002-2015 by
# David Turner.
#
# This file is part of the FreeType project, and may only be used,
# modified, and distributed under the terms of the FreeType project
# license, LICENSE.TXT. By continuing to use, modify, or distribute
# this file you indicate that you have read the license and
# understand and accept it fully.
#
# This file contains routines to parse documentation comment blocks,
# building more structured objects out of them.
#
from sources import *
from utils import *
import string, re
#
# Regular expressions to detect code sequences. `Code sequences' are simply
# code fragments embedded in '{' and '}', as demonstrated in the following
# example.
#
# {
# x = y + z;
# if ( zookoo == 2 )
# {
# foobar();
# }
# }
#
# Note that the indentation of the first opening brace and the last closing
# brace must be exactly the same. The code sequence itself should have a
# larger indentation than the surrounding braces.
#
re_code_start = re.compile( r"(\s*){\s*$" )
re_code_end = re.compile( r"(\s*)}\s*$" )
#
# A regular expression to isolate identifiers from other text.
#
re_identifier = re.compile( r'((?:\w|-)*)' )
#
# We collect macro names ending in `_H' (group 1), as defined in
# `config/ftheader.h'. While outputting the object data, we use this info
# together with the object's file location (group 2) to emit the appropriate
# header file macro and its associated file name before the object itself.
#
# Example:
#
# #define FT_FREETYPE_H <freetype.h>
#
re_header_macro = re.compile( r'^#define\s{1,}(\w{1,}_H)\s{1,}<(.*)>' )
################################################################
##
## DOC CODE CLASS
##
## The `DocCode' class is used to store source code lines.
##
## `self.lines' contains a set of source code lines that will be dumped as
## HTML in a <PRE> tag.
##
## The object is filled line by line by the parser; it strips the leading
## `margin' space from each input line before storing it in `self.lines'.
##
class DocCode:
def __init__( self, margin, lines ):
self.lines = []
self.words = None
# remove margin spaces
for l in lines:
if string.strip( l[:margin] ) == "":
l = l[margin:]
self.lines.append( l )
def dump( self, prefix = "", width = 60 ):
lines = self.dump_lines( 0, width )
for l in lines:
print prefix + l
def dump_lines( self, margin = 0, width = 60 ):
result = []
for l in self.lines:
result.append( " " * margin + l )
return result
################################################################
##
## DOC PARA CLASS
##
## `Normal' text paragraphs are stored in the `DocPara' class.
##
## `self.words' contains the list of words that make up the paragraph.
##
class DocPara:
def __init__( self, lines ):
self.lines = None
self.words = []
for l in lines:
l = string.strip( l )
self.words.extend( string.split( l ) )
def dump( self, prefix = "", width = 60 ):
lines = self.dump_lines( 0, width )
for l in lines:
print prefix + l
def dump_lines( self, margin = 0, width = 60 ):
cur = "" # current line
col = 0 # current width
result = []
for word in self.words:
ln = len( word )
if col > 0:
ln = ln + 1
if col + ln > width:
result.append( " " * margin + cur )
cur = word
col = len( word )
else:
if col > 0:
cur = cur + " "
cur = cur + word
col = col + ln
if col > 0:
result.append( " " * margin + cur )
return result
################################################################
##
## DOC FIELD CLASS
##
## The `DocField' class stores a list containing either `DocPara' or
## `DocCode' objects. Each DocField object also has an optional `name'
## that is used when the object corresponds to a field or value definition.
##
class DocField:
def __init__( self, name, lines ):
self.name = name # can be `None' for normal paragraphs/sources
self.items = [] # list of items
mode_none = 0 # start parsing mode
mode_code = 1 # parsing code sequences
mode_para = 3 # parsing normal paragraph
margin = -1 # current code sequence indentation
cur_lines = []
# analyze the markup lines to check whether they contain paragraphs,
# code sequences, or fields definitions
#
start = 0
mode = mode_none
for l in lines:
# are we parsing a code sequence?
if mode == mode_code:
m = re_code_end.match( l )
if m and len( m.group( 1 ) ) <= margin:
# that's it, we finished the code sequence
code = DocCode( 0, cur_lines )
self.items.append( code )
margin = -1
cur_lines = []
mode = mode_none
else:
# otherwise continue the code sequence
cur_lines.append( l[margin:] )
else:
# start of code sequence?
m = re_code_start.match( l )
if m:
# save current lines
if cur_lines:
para = DocPara( cur_lines )
self.items.append( para )
cur_lines = []
# switch to code extraction mode
margin = len( m.group( 1 ) )
mode = mode_code
else:
if not string.split( l ) and cur_lines:
# if the line is empty, we end the current paragraph,
# if any
para = DocPara( cur_lines )
self.items.append( para )
cur_lines = []
else:
# otherwise, simply add the line to the current
# paragraph
cur_lines.append( l )
if mode == mode_code:
# unexpected end of code sequence
code = DocCode( margin, cur_lines )
self.items.append( code )
elif cur_lines:
para = DocPara( cur_lines )
self.items.append( para )
def dump( self, prefix = "" ):
if self.field:
print prefix + self.field + " ::"
prefix = prefix + "----"
first = 1
for p in self.items:
if not first:
print ""
p.dump( prefix )
first = 0
def dump_lines( self, margin = 0, width = 60 ):
result = []
nl = None
for p in self.items:
if nl:
result.append( "" )
result.extend( p.dump_lines( margin, width ) )
nl = 1
return result
#
# A regular expression to detect field definitions.
#
# Examples:
#
# foo ::
# foo.bar ::
#
re_field = re.compile( r"""
\s*
(
\w*
|
\w (\w | \.)* \w
)
\s* ::
""", re.VERBOSE )
################################################################
##
## DOC MARKUP CLASS
##
class DocMarkup:
def __init__( self, tag, lines ):
self.tag = string.lower( tag )
self.fields = []
cur_lines = []
field = None
mode = 0
for l in lines:
m = re_field.match( l )
if m:
# We detected the start of a new field definition.
# first, save the current one
if cur_lines:
f = DocField( field, cur_lines )
self.fields.append( f )
cur_lines = []
field = None
field = m.group( 1 ) # record field name
ln = len( m.group( 0 ) )
l = " " * ln + l[ln:]
cur_lines = [l]
else:
cur_lines.append( l )
if field or cur_lines:
f = DocField( field, cur_lines )
self.fields.append( f )
def get_name( self ):
try:
return self.fields[0].items[0].words[0]
except:
return None
def dump( self, margin ):
print " " * margin + "<" + self.tag + ">"
for f in self.fields:
f.dump( " " )
print " " * margin + "</" + self.tag + ">"
################################################################
##
## DOC CHAPTER CLASS
##
class DocChapter:
def __init__( self, block ):
self.block = block
self.sections = []
if block:
self.name = block.name
self.title = block.get_markup_words( "title" )
self.order = block.get_markup_words( "sections" )
else:
self.name = "Other"
self.title = string.split( "Miscellaneous" )
self.order = []
################################################################
##
## DOC SECTION CLASS
##
class DocSection:
def __init__( self, name = "Other" ):
self.name = name
self.blocks = {}
self.block_names = [] # ordered block names in section
self.defs = []
self.abstract = ""
self.description = ""
self.order = []
self.title = "ERROR"
self.chapter = None
def add_def( self, block ):
self.defs.append( block )
def add_block( self, block ):
self.block_names.append( block.name )
self.blocks[block.name] = block
def process( self ):
# look up one block that contains a valid section description
for block in self.defs:
title = block.get_markup_text( "title" )
if title:
self.title = title
self.abstract = block.get_markup_words( "abstract" )
self.description = block.get_markup_items( "description" )
self.order = block.get_markup_words_all( "order" )
return
def reorder( self ):
self.block_names = sort_order_list( self.block_names, self.order )
################################################################
##
## CONTENT PROCESSOR CLASS
##
class ContentProcessor:
def __init__( self ):
"""Initialize a block content processor."""
self.reset()
self.sections = {} # dictionary of documentation sections
self.section = None # current documentation section
self.chapters = [] # list of chapters
self.headers = {} # dictionary of header macros
def set_section( self, section_name ):
"""Set current section during parsing."""
if not section_name in self.sections:
section = DocSection( section_name )
self.sections[section_name] = section
self.section = section
else:
self.section = self.sections[section_name]
def add_chapter( self, block ):
chapter = DocChapter( block )
self.chapters.append( chapter )
def reset( self ):
"""Reset the content processor for a new block."""
self.markups = []
self.markup = None
self.markup_lines = []
def add_markup( self ):
"""Add a new markup section."""
if self.markup and self.markup_lines:
# get rid of last line of markup if it's empty
marks = self.markup_lines
if len( marks ) > 0 and not string.strip( marks[-1] ):
self.markup_lines = marks[:-1]
m = DocMarkup( self.markup, self.markup_lines )
self.markups.append( m )
self.markup = None
self.markup_lines = []
def process_content( self, content ):
"""Process a block content and return a list of DocMarkup objects
corresponding to it."""
markup = None
markup_lines = []
first = 1
for line in content:
found = None
for t in re_markup_tags:
m = t.match( line )
if m:
found = string.lower( m.group( 1 ) )
prefix = len( m.group( 0 ) )
line = " " * prefix + line[prefix:] # remove markup from line
break
# is it the start of a new markup section ?
if found:
first = 0
self.add_markup() # add current markup content
self.markup = found
if len( string.strip( line ) ) > 0:
self.markup_lines.append( line )
elif first == 0:
self.markup_lines.append( line )
self.add_markup()
return self.markups
def parse_sources( self, source_processor ):
blocks = source_processor.blocks
count = len( blocks )
for n in range( count ):
source = blocks[n]
if source.content:
# this is a documentation comment, we need to catch
# all following normal blocks in the "follow" list
#
follow = []
m = n + 1
while m < count and not blocks[m].content:
follow.append( blocks[m] )
m = m + 1
doc_block = DocBlock( source, follow, self )
def finish( self ):
# process all sections to extract their abstract, description
# and ordered list of items
#
for sec in self.sections.values():
sec.process()
# process chapters to check that all sections are correctly
# listed there
for chap in self.chapters:
for sec in chap.order:
if sec in self.sections:
section = self.sections[sec]
section.chapter = chap
section.reorder()
chap.sections.append( section )
else:
sys.stderr.write( "WARNING: chapter '" + \
chap.name + "' in " + chap.block.location() + \
" lists unknown section '" + sec + "'\n" )
# check that all sections are in a chapter
#
others = []
for sec in self.sections.values():
if not sec.chapter:
sec.reorder()
others.append( sec )
# create a new special chapter for all remaining sections
# when necessary
#
if others:
chap = DocChapter( None )
chap.sections = others
self.chapters.append( chap )
################################################################
##
## DOC BLOCK CLASS
##
class DocBlock:
def __init__( self, source, follow, processor ):
processor.reset()
self.source = source
self.code = []
self.type = "ERRTYPE"
self.name = "ERRNAME"
self.section = processor.section
self.markups = processor.process_content( source.content )
# compute block type from first markup tag
try:
self.type = self.markups[0].tag
except:
pass
# compute block name from first markup paragraph
try:
markup = self.markups[0]
para = markup.fields[0].items[0]
name = para.words[0]
m = re_identifier.match( name )
if m:
name = m.group( 1 )
self.name = name
except:
pass
if self.type == "section":
# detect new section starts
processor.set_section( self.name )
processor.section.add_def( self )
elif self.type == "chapter":
# detect new chapter
processor.add_chapter( self )
else:
processor.section.add_block( self )
# now, compute the source lines relevant to this documentation
# block. We keep normal comments in for obvious reasons (??)
source = []
for b in follow:
if b.format:
break
for l in b.lines:
# collect header macro definitions
m = re_header_macro.match( l )
if m:
processor.headers[m.group( 2 )] = m.group( 1 );
# we use "/* */" as a separator
if re_source_sep.match( l ):
break
source.append( l )
# now strip the leading and trailing empty lines from the sources
start = 0
end = len( source ) - 1
while start < end and not string.strip( source[start] ):
start = start + 1
while start < end and not string.strip( source[end] ):
end = end - 1
if start == end and not string.strip( source[start] ):
self.code = []
else:
self.code = source[start:end + 1]
def location( self ):
return self.source.location()
def get_markup( self, tag_name ):
"""Return the DocMarkup corresponding to a given tag in a block."""
for m in self.markups:
if m.tag == string.lower( tag_name ):
return m
return None
def get_markup_words( self, tag_name ):
try:
m = self.get_markup( tag_name )
return m.fields[0].items[0].words
except:
return []
def get_markup_words_all( self, tag_name ):
try:
m = self.get_markup( tag_name )
words = []
for item in m.fields[0].items:
# We honour empty lines in an `<Order>' section element by
# adding the sentinel `/empty/'. The formatter should then
# convert it to an appropriate representation in the
# `section_enter' function.
words += item.words
words.append( "/empty/" )
return words
except:
return []
def get_markup_text( self, tag_name ):
result = self.get_markup_words( tag_name )
return string.join( result )
def get_markup_items( self, tag_name ):
try:
m = self.get_markup( tag_name )
return m.fields[0].items
except:
return None
# eof
|