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pythoncomplete.vim
"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 self.parserline = 0 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:
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