Source

vim / runtime / autoload / pythoncomplete.vim

  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
"pythoncomplete.vim - Omni Completion for python
" Maintainer: Aaron Griffin <aaronmgriffin@gmail.com>
" Version: 0.9
" Last Updated: 18 Jun 2009
"
" Changes
" TODO:
" 'info' item output can use some formatting work
" Add an "unsafe eval" mode, to allow for return type evaluation
" Complete basic syntax along with import statements
"   i.e. "import url<c-x,c-o>"
" Continue parsing on invalid line??
"
" v 0.9
"   * Fixed docstring parsing for classes and functions
"   * Fixed parsing of *args and **kwargs type arguments
"   * Better function param parsing to handle things like tuples and
"     lambda defaults args
"
" v 0.8
"   * Fixed an issue where the FIRST assignment was always used instead of
"   using a subsequent assignment for a variable
"   * Fixed a scoping issue when working inside a parameterless function
"
"
" v 0.7
"   * Fixed function list sorting (_ and __ at the bottom)
"   * Removed newline removal from docs.  It appears vim handles these better in
"   recent patches
"
" v 0.6:
"   * Fixed argument completion
"   * Removed the 'kind' completions, as they are better indicated
"   with real syntax
"   * Added tuple assignment parsing (whoops, that was forgotten)
"   * Fixed import handling when flattening scope
"
" v 0.5:
" Yeah, I skipped a version number - 0.4 was never public.
"  It was a bugfix version on top of 0.3.  This is a complete
"  rewrite.
"

if !has('python')
    echo "Error: Required vim compiled with +python"
    finish
endif

function! pythoncomplete#Complete(findstart, base)
    "findstart = 1 when we need to get the text length
    if a:findstart == 1
        let line = getline('.')
        let idx = col('.')
        while idx > 0
            let idx -= 1
            let c = line[idx]
            if c =~ '\w'
                continue
            elseif ! c =~ '\.'
                let idx = -1
                break
            else
                break
            endif
        endwhile

        return idx
    "findstart = 0 when we need to return the list of completions
    else
        "vim no longer moves the cursor upon completion... fix that
        let line = getline('.')
        let idx = col('.')
        let cword = ''
        while idx > 0
            let idx -= 1
            let c = line[idx]
            if c =~ '\w' || c =~ '\.'
                let cword = c . cword
                continue
            elseif strlen(cword) > 0 || idx == 0
                break
            endif
        endwhile
        execute "python vimcomplete('" . cword . "', '" . a:base . "')"
        return g:pythoncomplete_completions
    endif
endfunction

function! s:DefPython()
python << PYTHONEOF
import sys, tokenize, cStringIO, types
from token import NAME, DEDENT, NEWLINE, STRING

debugstmts=[]
def dbg(s): debugstmts.append(s)
def showdbg():
    for d in debugstmts: print "DBG: %s " % d

def vimcomplete(context,match):
    global debugstmts
    debugstmts = []
    try:
        import vim
        def complsort(x,y):
            try:
                xa = x['abbr']
                ya = y['abbr']
                if xa[0] == '_':
                    if xa[1] == '_' and ya[0:2] == '__':
                        return xa > ya
                    elif ya[0:2] == '__':
                        return -1
                    elif y[0] == '_':
                        return xa > ya
                    else:
                        return 1
                elif ya[0] == '_':
                    return -1
                else:
                   return xa > ya
            except:
                return 0
        cmpl = Completer()
        cmpl.evalsource('\n'.join(vim.current.buffer),vim.eval("line('.')"))
        all = cmpl.get_completions(context,match)
        all.sort(complsort)
        dictstr = '['
        # have to do this for double quoting
        for cmpl in all:
            dictstr += '{'
            for x in cmpl: dictstr += '"%s":"%s",' % (x,cmpl[x])
            dictstr += '"icase":0},'
        if dictstr[-1] == ',': dictstr = dictstr[:-1]
        dictstr += ']'
        #dbg("dict: %s" % dictstr)
        vim.command("silent let g:pythoncomplete_completions = %s" % dictstr)
        #dbg("Completion dict:\n%s" % all)
    except vim.error:
        dbg("VIM Error: %s" % vim.error)

class Completer(object):
    def __init__(self):
       self.compldict = {}
       self.parser = PyParser()

    def evalsource(self,text,line=0):
        sc = self.parser.parse(text,line)
        src = sc.get_code()
        dbg("source: %s" % src)
        try: exec(src) in self.compldict
        except: dbg("parser: %s, %s" % (sys.exc_info()[0],sys.exc_info()[1]))
        for l in sc.locals:
            try: exec(l) in self.compldict
            except: dbg("locals: %s, %s [%s]" % (sys.exc_info()[0],sys.exc_info()[1],l))

    def _cleanstr(self,doc):
        return doc.replace('"',' ').replace("'",' ')

    def get_arguments(self,func_obj):
        def _ctor(obj):
            try: return class_ob.__init__.im_func
            except AttributeError:
                for base in class_ob.__bases__:
                    rc = _find_constructor(base)
                    if rc is not None: return rc
            return None

        arg_offset = 1
        if type(func_obj) == types.ClassType: func_obj = _ctor(func_obj)
        elif type(func_obj) == types.MethodType: func_obj = func_obj.im_func
        else: arg_offset = 0
        
        arg_text=''
        if type(func_obj) in [types.FunctionType, types.LambdaType]:
            try:
                cd = func_obj.func_code
                real_args = cd.co_varnames[arg_offset:cd.co_argcount]
                defaults = func_obj.func_defaults or ''
                defaults = map(lambda name: "=%s" % name, defaults)
                defaults = [""] * (len(real_args)-len(defaults)) + defaults
                items = map(lambda a,d: a+d, real_args, defaults)
                if func_obj.func_code.co_flags & 0x4:
                    items.append("...")
                if func_obj.func_code.co_flags & 0x8:
                    items.append("***")
                arg_text = (','.join(items)) + ')'

            except:
                dbg("arg completion: %s: %s" % (sys.exc_info()[0],sys.exc_info()[1]))
                pass
        if len(arg_text) == 0:
            # The doc string sometimes contains the function signature
            #  this works for alot of C modules that are part of the
            #  standard library
            doc = func_obj.__doc__
            if doc:
                doc = doc.lstrip()
                pos = doc.find('\n')
                if pos > 0:
                    sigline = doc[:pos]
                    lidx = sigline.find('(')
                    ridx = sigline.find(')')
                    if lidx > 0 and ridx > 0:
                        arg_text = sigline[lidx+1:ridx] + ')'
        if len(arg_text) == 0: arg_text = ')'
        return arg_text

    def get_completions(self,context,match):
        dbg("get_completions('%s','%s')" % (context,match))
        stmt = ''
        if context: stmt += str(context)
        if match: stmt += str(match)
        try:
            result = None
            all = {}
            ridx = stmt.rfind('.')
            if len(stmt) > 0 and stmt[-1] == '(':
                result = eval(_sanitize(stmt[:-1]), self.compldict)
                doc = result.__doc__
                if doc is None: doc = ''
                args = self.get_arguments(result)
                return [{'word':self._cleanstr(args),'info':self._cleanstr(doc)}]
            elif ridx == -1:
                match = stmt
                all = self.compldict
            else:
                match = stmt[ridx+1:]
                stmt = _sanitize(stmt[:ridx])
                result = eval(stmt, self.compldict)
                all = dir(result)

            dbg("completing: stmt:%s" % stmt)
            completions = []

            try: maindoc = result.__doc__
            except: maindoc = ' '
            if maindoc is None: maindoc = ' '
            for m in all:
                if m == "_PyCmplNoType": continue #this is internal
                try:
                    dbg('possible completion: %s' % m)
                    if m.find(match) == 0:
                        if result is None: inst = all[m]
                        else: inst = getattr(result,m)
                        try: doc = inst.__doc__
                        except: doc = maindoc
                        typestr = str(inst)
                        if doc is None or doc == '': doc = maindoc

                        wrd = m[len(match):]
                        c = {'word':wrd, 'abbr':m,  'info':self._cleanstr(doc)}
                        if "function" in typestr:
                            c['word'] += '('
                            c['abbr'] += '(' + self._cleanstr(self.get_arguments(inst))
                        elif "method" in typestr:
                            c['word'] += '('
                            c['abbr'] += '(' + self._cleanstr(self.get_arguments(inst))
                        elif "module" in typestr:
                            c['word'] += '.'
                        elif "class" in typestr:
                            c['word'] += '('
                            c['abbr'] += '('
                        completions.append(c)
                except:
                    i = sys.exc_info()
                    dbg("inner completion: %s,%s [stmt='%s']" % (i[0],i[1],stmt))
            return completions
        except:
            i = sys.exc_info()
            dbg("completion: %s,%s [stmt='%s']" % (i[0],i[1],stmt))
            return []

class Scope(object):
    def __init__(self,name,indent,docstr=''):
        self.subscopes = []
        self.docstr = docstr
        self.locals = []
        self.parent = None
        self.name = name
        self.indent = indent

    def add(self,sub):
        #print 'push scope: [%s@%s]' % (sub.name,sub.indent)
        sub.parent = self
        self.subscopes.append(sub)
        return sub

    def doc(self,str):
        """ Clean up a docstring """
        d = str.replace('\n',' ')
        d = d.replace('\t',' ')
        while d.find('  ') > -1: d = d.replace('  ',' ')
        while d[0] in '"\'\t ': d = d[1:]
        while d[-1] in '"\'\t ': d = d[:-1]
        dbg("Scope(%s)::docstr = %s" % (self,d))
        self.docstr = d

    def local(self,loc):
        self._checkexisting(loc)
        self.locals.append(loc)

    def copy_decl(self,indent=0):
        """ Copy a scope's declaration only, at the specified indent level - not local variables """
        return Scope(self.name,indent,self.docstr)

    def _checkexisting(self,test):
        "Convienance function... keep out duplicates"
        if test.find('=') > -1:
            var = test.split('=')[0].strip()
            for l in self.locals:
                if l.find('=') > -1 and var == l.split('=')[0].strip():
                    self.locals.remove(l)

    def get_code(self):
        str = ""
        if len(self.docstr) > 0: str += '"""'+self.docstr+'"""\n'
        for l in self.locals:
            if l.startswith('import'): str += l+'\n'
        str += 'class _PyCmplNoType:\n    def __getattr__(self,name):\n        return None\n'
        for sub in self.subscopes:
            str += sub.get_code()
        for l in self.locals:
            if not l.startswith('import'): str += l+'\n'

        return str

    def pop(self,indent):
        #print 'pop scope: [%s] to [%s]' % (self.indent,indent)
        outer = self
        while outer.parent != None and outer.indent >= indent:
            outer = outer.parent
        return outer

    def currentindent(self):
        #print 'parse current indent: %s' % self.indent
        return '    '*self.indent

    def childindent(self):
        #print 'parse child indent: [%s]' % (self.indent+1)
        return '    '*(self.indent+1)

class Class(Scope):
    def __init__(self, name, supers, indent, docstr=''):
        Scope.__init__(self,name,indent, docstr)
        self.supers = supers
    def copy_decl(self,indent=0):
        c = Class(self.name,self.supers,indent, self.docstr)
        for s in self.subscopes:
            c.add(s.copy_decl(indent+1))
        return c
    def get_code(self):
        str = '%sclass %s' % (self.currentindent(),self.name)
        if len(self.supers) > 0: str += '(%s)' % ','.join(self.supers)
        str += ':\n'
        if len(self.docstr) > 0: str += self.childindent()+'"""'+self.docstr+'"""\n'
        if len(self.subscopes) > 0:
            for s in self.subscopes: str += s.get_code()
        else:
            str += '%spass\n' % self.childindent()
        return str


class Function(Scope):
    def __init__(self, name, params, indent, docstr=''):
        Scope.__init__(self,name,indent, docstr)
        self.params = params
    def copy_decl(self,indent=0):
        return Function(self.name,self.params,indent, self.docstr)
    def get_code(self):
        str = "%sdef %s(%s):\n" % \
            (self.currentindent(),self.name,','.join(self.params))
        if len(self.docstr) > 0: str += self.childindent()+'"""'+self.docstr+'"""\n'
        str += "%spass\n" % self.childindent()
        return str

class PyParser:
    def __init__(self):
        self.top = Scope('global',0)
        self.scope = self.top

    def _parsedotname(self,pre=None):
        #returns (dottedname, nexttoken)
        name = []
        if pre is None:
            tokentype, token, indent = self.next()
            if tokentype != NAME and token != '*':
                return ('', token)
        else: token = pre
        name.append(token)
        while True:
            tokentype, token, indent = self.next()
            if token != '.': break
            tokentype, token, indent = self.next()
            if tokentype != NAME: break
            name.append(token)
        return (".".join(name), token)

    def _parseimportlist(self):
        imports = []
        while True:
            name, token = self._parsedotname()
            if not name: break
            name2 = ''
            if token == 'as': name2, token = self._parsedotname()
            imports.append((name, name2))
            while token != "," and "\n" not in token:
                tokentype, token, indent = self.next()
            if token != ",": break
        return imports

    def _parenparse(self):
        name = ''
        names = []
        level = 1
        while True:
            tokentype, token, indent = self.next()
            if token in (')', ',') and level == 1:
                if '=' not in name: name = name.replace(' ', '')
                names.append(name.strip())
                name = ''
            if token == '(':
                level += 1
                name += "("
            elif token == ')':
                level -= 1
                if level == 0: break
                else: name += ")"
            elif token == ',' and level == 1:
                pass
            else:
                name += "%s " % str(token)
        return names

    def _parsefunction(self,indent):
        self.scope=self.scope.pop(indent)
        tokentype, fname, ind = self.next()
        if tokentype != NAME: return None

        tokentype, open, ind = self.next()
        if open != '(': return None
        params=self._parenparse()

        tokentype, colon, ind = self.next()
        if colon != ':': return None

        return Function(fname,params,indent)

    def _parseclass(self,indent):
        self.scope=self.scope.pop(indent)
        tokentype, cname, ind = self.next()
        if tokentype != NAME: return None

        super = []
        tokentype, next, ind = self.next()
        if next == '(':
            super=self._parenparse()
        elif next != ':': return None

        return Class(cname,super,indent)

    def _parseassignment(self):
        assign=''
        tokentype, token, indent = self.next()
        if tokentype == tokenize.STRING or token == 'str':  
            return '""'
        elif token == '(' or token == 'tuple':
            return '()'
        elif token == '[' or token == 'list':
            return '[]'
        elif token == '{' or token == 'dict':
            return '{}'
        elif tokentype == tokenize.NUMBER:
            return '0'
        elif token == 'open' or token == 'file':
            return 'file'
        elif token == 'None':
            return '_PyCmplNoType()'
        elif token == 'type':
            return 'type(_PyCmplNoType)' #only for method resolution
        else:
            assign += token
            level = 0
            while True:
                tokentype, token, indent = self.next()
                if token in ('(','{','['):
                    level += 1
                elif token in (']','}',')'):
                    level -= 1
                    if level == 0: break
                elif level == 0:
                    if token in (';','\n'): break
                    assign += token
        return "%s" % assign

    def next(self):
        type, token, (lineno, indent), end, self.parserline = self.gen.next()
        if lineno == self.curline:
            #print 'line found [%s] scope=%s' % (line.replace('\n',''),self.scope.name)
            self.currentscope = self.scope
        return (type, token, indent)

    def _adjustvisibility(self):
        newscope = Scope('result',0)
        scp = self.currentscope
        while scp != None:
            if type(scp) == Function:
                slice = 0
                #Handle 'self' params
                if scp.parent != None and type(scp.parent) == Class:
                    slice = 1
                    newscope.local('%s = %s' % (scp.params[0],scp.parent.name))
                for p in scp.params[slice:]:
                    i = p.find('=')
                    if len(p) == 0: continue
                    pvar = ''
                    ptype = ''
                    if i == -1:
                        pvar = p
                        ptype = '_PyCmplNoType()'
                    else:
                        pvar = p[:i]
                        ptype = _sanitize(p[i+1:])
                    if pvar.startswith('**'):
                        pvar = pvar[2:]
                        ptype = '{}'
                    elif pvar.startswith('*'):
                        pvar = pvar[1:]
                        ptype = '[]'

                    newscope.local('%s = %s' % (pvar,ptype))

            for s in scp.subscopes:
                ns = s.copy_decl(0)
                newscope.add(ns)
            for l in scp.locals: newscope.local(l)
            scp = scp.parent

        self.currentscope = newscope
        return self.currentscope

    #p.parse(vim.current.buffer[:],vim.eval("line('.')"))
    def parse(self,text,curline=0):
        self.curline = int(curline)
        buf = cStringIO.StringIO(''.join(text) + '\n')
        self.gen = tokenize.generate_tokens(buf.readline)
        self.currentscope = self.scope

        try:
            freshscope=True
            while True:
                tokentype, token, indent = self.next()
                #dbg( 'main: token=[%s] indent=[%s]' % (token,indent))

                if tokentype == DEDENT or token == "pass":
                    self.scope = self.scope.pop(indent)
                elif token == 'def':
                    func = self._parsefunction(indent)
                    if func is None:
                        print "function: syntax error..."
                        continue
                    dbg("new scope: function")
                    freshscope = True
                    self.scope = self.scope.add(func)
                elif token == 'class':
                    cls = self._parseclass(indent)
                    if cls is None:
                        print "class: syntax error..."
                        continue
                    freshscope = True
                    dbg("new scope: class")
                    self.scope = self.scope.add(cls)
                    
                elif token == 'import':
                    imports = self._parseimportlist()
                    for mod, alias in imports:
                        loc = "import %s" % mod
                        if len(alias) > 0: loc += " as %s" % alias
                        self.scope.local(loc)
                    freshscope = False
                elif token == 'from':
                    mod, token = self._parsedotname()
                    if not mod or token != "import":
                        print "from: syntax error..."
                        continue
                    names = self._parseimportlist()
                    for name, alias in names:
                        loc = "from %s import %s" % (mod,name)
                        if len(alias) > 0: loc += " as %s" % alias
                        self.scope.local(loc)
                    freshscope = False
                elif tokentype == STRING:
                    if freshscope: self.scope.doc(token)
                elif tokentype == NAME:
                    name,token = self._parsedotname(token) 
                    if token == '=':
                        stmt = self._parseassignment()
                        dbg("parseassignment: %s = %s" % (name, stmt))
                        if stmt != None:
                            self.scope.local("%s = %s" % (name,stmt))
                    freshscope = False
        except StopIteration: #thrown on EOF
            pass
        except:
            dbg("parse error: %s, %s @ %s" %
                (sys.exc_info()[0], sys.exc_info()[1], self.parserline))
        return self._adjustvisibility()

def _sanitize(str):
    val = ''
    level = 0
    for c in str:
        if c in ('(','{','['):
            level += 1
        elif c in (']','}',')'):
            level -= 1
        elif level == 0:
            val += c
    return val

sys.path.extend(['.','..'])
PYTHONEOF
endfunction

call s:DefPython()
" vim: set et ts=4: