827 lines
27 KiB
Python
827 lines
27 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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import glob
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import os
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import re
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import string
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import vim
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from UltiSnips.Geometry import Position
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from UltiSnips.TextObjects import *
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from UltiSnips.Buffer import VimBuffer
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# The following lines silence DeprecationWarnings. They are raised
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# by python2.6 for vim.error (which is a string that is used as an exception,
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# which is deprecated since 2.5 and will no longer work in 2.7. Let's hope
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# vim gets this fixed before)
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import sys
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if sys.version_info[:2] >= (2,6):
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import warnings
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warnings.filterwarnings("ignore", category=DeprecationWarning)
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def _vim_quote(s):
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"""Quote string s as Vim literal string."""
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return "'" + s.replace("'", "''") + "'"
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class _SnippetDictionary(object):
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def __init__(self, *args, **kwargs):
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self._snippets = []
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self._extends = []
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def add_snippet(self, s):
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self._snippets.append(s)
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def get_matching_snippets(self, trigger, potentially):
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"""Returns all snippets matching the given trigger."""
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if not potentially:
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return [ s for s in self._snippets if s.matches(trigger) ]
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else:
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return [ s for s in self._snippets if s.could_match(trigger) ]
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def clear_snippets(self, triggers=[]):
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"""Remove all snippets that match each trigger in triggers.
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When triggers is empty, removes all snippets.
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"""
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if triggers:
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for t in triggers:
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for s in self.get_matching_snippets(t, potentially=False):
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self._snippets.remove(s)
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else:
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self._snippets = []
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def extends():
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def fget(self):
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return self._extends
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def fset(self, value):
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self._extends = value
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return locals()
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extends = property(**extends())
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class _SnippetsFileParser(object):
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def __init__(self, ft, fn, snip_manager, file_data=None):
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self._sm = snip_manager
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self._ft = ft
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self._fn = fn
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if file_data is None:
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self._lines = open(fn).readlines()
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else:
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self._lines = file_data.splitlines(True)
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self._idx = 0
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def _error(self, msg):
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fn = vim.eval("""fnamemodify(%s, ":~:.")""" % _vim_quote(self._fn))
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self._sm._error("%s in %s(%d)" % (msg, fn, self._idx + 1))
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def _line(self):
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if self._idx < len(self._lines):
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line = self._lines[self._idx]
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else:
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line = ""
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return line
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def _line_head_tail(self):
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parts = re.split(r"\s+", self._line().rstrip(), maxsplit=1)
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parts.append('')
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return parts[:2]
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def _line_head(self):
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return self._line_head_tail()[0]
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def _line_tail(self):
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return self._line_head_tail()[1]
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def _goto_next_line(self):
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self._idx += 1
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return self._line()
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def _parse_snippet(self):
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line = self._line()
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cdescr = ""
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coptions = ""
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cs = line.split()[1]
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left = line.find('"')
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if left != -1:
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right = line.rfind('"')
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cdescr = line[left+1:right]
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coptions = line[right:].strip()
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cv = ""
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while self._goto_next_line():
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line = self._line()
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if line.rstrip() == "endsnippet":
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cv = cv[:-1] # Chop the last newline
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self._sm.add_snippet(cs, cv, cdescr, coptions, self._ft)
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break
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cv += line
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else:
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self._error("Missing 'endsnippet' for %r" % cs)
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def parse(self):
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while self._line():
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head, tail = self._line_head_tail()
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if head == "extends":
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if tail:
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self._sm.add_extending_info(self._ft,
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[ p.strip() for p in tail.split(',') ])
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else:
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self._error("'extends' without file types")
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elif head == "snippet":
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self._parse_snippet()
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elif head == "clearsnippets":
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self._sm.clear_snippets(tail.split(), self._ft)
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elif head and not head.startswith('#'):
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self._error("Invalid line %r" % self._line().rstrip())
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break
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self._goto_next_line()
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class Snippet(object):
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_INDENT = re.compile(r"^[ \t]*")
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def __init__(self, trigger, value, descr, options):
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self._t = trigger
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self._v = value
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self._d = descr
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self._opts = options
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def __repr__(self):
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return "Snippet(%s,%s,%s)" % (self._t,self._d,self._opts)
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def matches(self, trigger):
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# If user supplies both "w" and "i", it should perhaps be an
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# error, but if permitted it seems that "w" should take precedence
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# (since matching at word boundary and within a word == matching at word
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# boundary).
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if "w" in self._opts:
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trigger_len = len(self._t)
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trigger_prefix = trigger[:-trigger_len]
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trigger_suffix = trigger[-trigger_len:]
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match = (trigger_suffix == self._t)
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if match and trigger_prefix:
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# Require a word boundary between prefix and suffix.
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boundaryChars = trigger_prefix[-1:] + trigger_suffix[:1]
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match = re.match(r'.\b.', boundaryChars)
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elif "i" in self._opts:
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match = trigger.endswith(self._t)
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else:
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match = (trigger == self._t)
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return match
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def could_match(self, trigger):
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if "w" in self._opts:
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# Trim non-empty prefix up to word boundary, if present.
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trigger_suffix = re.sub(r'^.+\b(.+)$', r'\1', trigger)
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match = self._t.startswith(trigger_suffix)
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# TODO: list_snippets() function cannot handle partial-trigger
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# matches yet, so for now fail if we trimmed the prefix.
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if trigger_suffix != trigger:
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match = False
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elif "i" in self._opts:
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# TODO: It is hard to define when a inword snippet could match,
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# therefore we check only for full-word trigger.
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match = self._t.startswith(trigger)
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else:
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match = self._t.startswith(trigger)
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return match
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def overwrites_previous(self):
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return "!" in self._opts
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overwrites_previous = property(overwrites_previous)
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def needs_ws_in_front(self):
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return "b" in self._opts
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needs_ws_in_front = property(needs_ws_in_front)
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def description(self):
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return ("(%s) %s" % (self._t, self._d)).strip()
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description = property(description)
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def trigger(self):
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return self._t
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trigger = property(trigger)
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def launch(self, text_before, parent, start, end = None):
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indent = self._INDENT.match(text_before).group(0)
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v = self._v
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if len(indent):
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lines = self._v.splitlines()
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v = lines[0]
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if len(lines) > 1:
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v += os.linesep + \
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os.linesep.join([indent + l for l in lines[1:]])
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if vim.eval("&expandtab") == '1':
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ts = int(vim.eval("&ts"))
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# expandtabs will not work for us, we have to replace all tabstops
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# so that indent is right at least. tabs in the middle of the line
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# will not be expanded correctly
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v = v.replace('\t', ts*" ")
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if parent is None:
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return SnippetInstance(StartMarker(start), indent, v)
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else:
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return SnippetInstance(parent, indent, v, start, end)
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class VimState(object):
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def __init__(self):
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self._abs_pos = None
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self._moved = Position(0,0)
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self._lines = None
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self._dlines = None
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self._cols = None
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self._dcols = None
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self._cline = None
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self._lline = None
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self._text_changed = None
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def update(self):
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line, col = vim.current.window.cursor
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line -= 1
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abs_pos = Position(line,col)
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if self._abs_pos:
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self._moved = abs_pos - self._abs_pos
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self._abs_pos = abs_pos
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# Update buffer infos
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cols = len(vim.current.buffer[line])
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if self._cols:
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self._dcols = cols - self._cols
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self._cols = cols
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lines = len(vim.current.buffer)
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if self._lines:
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self._dlines = lines - self._lines
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self._lines = lines
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# Check if the buffer has changed in any ways
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self._text_changed = False
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# does it have more lines?
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if self._dlines:
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self._text_changed = True
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# did we stay in the same line and it has more columns now?
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elif not self.moved.line and self._dcols:
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self._text_changed = True
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# If the length didn't change but we moved a column, check if
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# the char under the cursor has changed (might be one char tab).
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elif self.moved.col == 1:
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self._text_changed = self._cline != vim.current.buffer[line]
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self._lline = self._cline
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self._cline = vim.current.buffer[line]
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def select_span(self, r):
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delta = r.end - r.start
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lineno, col = r.start.line, r.start.col
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vim.current.window.cursor = lineno + 1, col
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if delta.line == delta.col == 0:
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if col == 0 or vim.eval("mode()") != 'i':
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vim.command(r'call feedkeys("\<Esc>i")')
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else:
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vim.command(r'call feedkeys("\<Esc>a")')
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else:
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if delta.line:
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move_lines = "%ij" % delta.line
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else:
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move_lines = ""
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# Depending on the current mode and position, we
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# might need to move escape out of the mode and this
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# will move our cursor one left
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if col != 0 and vim.eval("mode()") == 'i':
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move_one_right = "l"
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else:
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move_one_right = ""
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if 0 <= delta.col <= 1:
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do_select = ""
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elif delta.col > 0:
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do_select = "%il" % (delta.col-1)
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else:
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do_select = "%ih" % (-delta.col+1)
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vim.command(r'call feedkeys("\<Esc>%sv%s%s\<c-g>")' %
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(move_one_right, move_lines, do_select))
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def buf_changed(self):
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return self._text_changed
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buf_changed = property(buf_changed)
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def pos(self):
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return self._abs_pos
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pos = property(pos)
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def ppos(self):
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if not self.has_moved:
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return self.pos
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return self.pos - self.moved
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ppos = property(ppos)
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def moved(self):
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return self._moved
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moved = property(moved)
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def has_moved(self):
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return bool(self._moved.line or self._moved.col)
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has_moved = property(has_moved)
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def last_line(self):
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return self._lline
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last_line = property(last_line)
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class SnippetManager(object):
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def __init__(self):
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self._vstate = VimState()
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self._supertab_keys = None
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self.reset()
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def reset(self, test_error=False):
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self._test_error = test_error
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self._snippets = {}
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self._csnippets = []
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self._reinit()
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def jump_forwards(self):
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if not self._jump():
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return self._handle_failure(self.forward_trigger)
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def jump_backwards(self):
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if not self._jump(True):
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return self._handle_failure(self.backward_trigger)
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def expand(self):
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if not self._try_expand():
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self._handle_failure(self.expand_trigger)
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def list_snippets(self):
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filetypes = self._ensure_snippets_loaded()
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# TODO: this code is duplicated below
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filetypes = vim.eval("&filetype").split(".") + [ "all" ]
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lineno,col = vim.current.window.cursor
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line = vim.current.line
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before,after = line[:col], line[col:]
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word = ''
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if len(before):
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word = before.split()[-1]
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found_snippets = []
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for ft in filetypes[::-1]:
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found_snippets += self._find_snippets(ft, word, True)
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if len(found_snippets) == 0:
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return True
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display = [ "%i %s" % (idx+1,s.description)
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for idx,s in enumerate(found_snippets) ]
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# TODO: this code is also mirrored below
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try:
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rv = vim.eval("inputlist(%s)" % display)
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if rv is None or rv == '0':
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return True
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rv = int(rv)
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if rv > len(found_snippets):
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rv = len(found_snippets)
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snippet = found_snippets[rv-1]
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except: # vim.error, e:
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if str(e) == 'invalid expression':
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return True
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raise
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# TODO: even more code duplicated below
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# Adjust before, maybe the trigger is not the complete word
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text_before = before.rstrip()[:-len(word)]
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text_before += word[:-len(snippet.trigger)]
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self._expect_move_wo_change = True
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if self._cs:
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# Determine position
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pos = self._vstate.pos
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p_start = self._ctab.abs_start
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if pos.line == p_start.line:
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end = Position(0, pos.col - p_start.col)
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else:
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end = Position(pos.line - p_start.line, pos.col)
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start = Position(end.line, end.col - len(snippet.trigger))
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si = snippet.launch(text_before, self._ctab, start, end)
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self._update_vim_buffer()
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if si.has_tabs:
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self._csnippets.append(si)
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self._jump()
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else:
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self._vb = VimBuffer(text_before, after)
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start = Position(lineno-1, len(text_before))
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self._csnippets.append(snippet.launch(text_before, None, start))
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self._vb.replace_lines(lineno-1, lineno-1,
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self._cs._current_text)
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self._jump()
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return True
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def expand_or_jump(self):
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"""
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This function is used for people who wants to have the same trigger for
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expansion and forward jumping. It first tries to expand a snippet, if
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this fails, it tries to jump forward.
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"""
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rv = self._try_expand()
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if not rv:
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rv = self._jump()
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if not rv:
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self._handle_failure(self.expand_trigger)
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def add_snippet(self, trigger, value, descr, options, ft = "all"):
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if ft not in self._snippets:
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self._snippets[ft] = _SnippetDictionary()
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l = self._snippets[ft].add_snippet(
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Snippet(trigger, value, descr, options)
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)
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def clear_snippets(self, triggers = [], ft = "all"):
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if ft in self._snippets:
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self._snippets[ft].clear_snippets(triggers)
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def add_extending_info(self, ft, parents):
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if ft not in self._snippets:
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self._snippets[ft] = _SnippetDictionary()
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sd = self._snippets[ft]
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for p in parents:
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if p in sd.extends:
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continue
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sd.extends.append(p)
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def backspace_while_selected(self):
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"""
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This is called when backspace was used while a placeholder was selected.
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"""
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# BS was called in select mode
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if self._cs and (self._span_selected is not None):
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# This only happens when a default value is delted using backspace
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vim.command(r'call feedkeys("i")')
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self._chars_entered('')
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else:
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vim.command(r'call feedkeys("\<BS>")')
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def cursor_moved(self):
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self._vstate.update()
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if not self._vstate.buf_changed and not self._expect_move_wo_change:
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self._check_if_still_inside_snippet()
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if not self._ctab:
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return
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if self._vstate.buf_changed and self._ctab:
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# Detect a carriage return
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if self._vstate.moved.col <= 0 and self._vstate.moved.line == 1:
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# Multiple things might have happened: either the user entered
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# a newline character or pasted some text which means we have
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# to copy everything he entered on the last line and keep the
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# indent vim chose for this line.
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lline = vim.current.buffer[self._vstate.ppos.line]
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# Another thing that might have happened is that a word
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# wrapped, in this case the last line is shortened and we must
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# delete what Vim deleted there
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line_was_shortened = len(self._vstate.last_line) > len(lline)
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# Another thing that might have happened is that vim has
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# adjusted the indent of the last line and therefore the line
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# effectivly got longer. This means a newline was entered and
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# we quite definitivly do not want the indent that vim added
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line_was_lengthened = len(lline) > len(self._vstate.last_line)
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user_didnt_enter_newline = len(lline) != self._vstate.ppos.col
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cline = vim.current.buffer[self._vstate.pos.line]
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if line_was_lengthened:
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this_entered = vim.current.line[:self._vstate.pos.col]
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self._chars_entered('\n' + cline + this_entered, 1)
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if line_was_shortened and user_didnt_enter_newline:
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self._backspace(len(self._vstate.last_line)-len(lline))
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self._chars_entered('\n' + cline, 1)
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else:
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pentered = lline[self._vstate.ppos.col:]
|
|
this_entered = vim.current.line[:self._vstate.pos.col]
|
|
|
|
self._chars_entered(pentered + '\n' + this_entered)
|
|
elif self._vstate.moved.line == 0 and self._vstate.moved.col<0:
|
|
# Some deleting was going on
|
|
self._backspace(-self._vstate.moved.col)
|
|
elif self._vstate.moved.line < 0:
|
|
# Backspace over line end
|
|
self._backspace(1)
|
|
else:
|
|
line = vim.current.line
|
|
|
|
chars = line[self._vstate.pos.col - self._vstate.moved.col:
|
|
self._vstate.pos.col]
|
|
self._chars_entered(chars)
|
|
|
|
self._expect_move_wo_change = False
|
|
|
|
def entered_insert_mode(self):
|
|
self._vstate.update()
|
|
if self._cs and self._vstate.has_moved:
|
|
self._reinit()
|
|
self._csnippets = []
|
|
|
|
###################################
|
|
# Private/Protect Functions Below #
|
|
###################################
|
|
def _error(self, msg):
|
|
msg = _vim_quote("UltiSnips: " + msg)
|
|
if self._test_error:
|
|
msg = msg.replace('"', r'\"')
|
|
msg = msg.replace('|', r'\|')
|
|
vim.command("let saved_pos=getpos('.')")
|
|
vim.command("$:put =%s" % msg)
|
|
vim.command("call setpos('.', saved_pos)")
|
|
elif False:
|
|
vim.command("echohl WarningMsg")
|
|
vim.command("echomsg %s" % msg)
|
|
vim.command("echohl None")
|
|
else:
|
|
vim.command("echoerr %s" % msg)
|
|
|
|
def _reinit(self):
|
|
self._ctab = None
|
|
self._span_selected = None
|
|
self._expect_move_wo_change = False
|
|
|
|
def _check_if_still_inside_snippet(self):
|
|
# Cursor moved without input.
|
|
self._ctab = None
|
|
|
|
# Did we leave the snippet with this movement?
|
|
if self._cs and not (self._vstate.pos in self._cs.abs_span):
|
|
self._csnippets.pop()
|
|
|
|
self._reinit()
|
|
|
|
self._check_if_still_inside_snippet()
|
|
|
|
def _jump(self, backwards = False):
|
|
jumped = False
|
|
if self._cs:
|
|
self._expect_move_wo_change = True
|
|
self._ctab = self._cs.select_next_tab(backwards)
|
|
if self._ctab:
|
|
self._vstate.select_span(self._ctab.abs_span)
|
|
self._span_selected = self._ctab.abs_span
|
|
jumped = True
|
|
if self._ctab.no == 0:
|
|
self._ctab = None
|
|
self._csnippets.pop()
|
|
self._vstate.update()
|
|
else:
|
|
# This really shouldn't happen, because a snippet should
|
|
# have been popped when its final tabstop was used.
|
|
# Cleanup by removing current snippet and recursing.
|
|
self._csnippets.pop()
|
|
jumped = self._jump(backwards)
|
|
return jumped
|
|
|
|
def _handle_failure(self, trigger):
|
|
"""
|
|
Mainly make sure that we play well with SuperTab
|
|
"""
|
|
if trigger.lower() == "<tab>":
|
|
feedkey = "\\" + trigger
|
|
else:
|
|
feedkey = None
|
|
mode = "n"
|
|
if not self._supertab_keys:
|
|
if vim.eval("exists('g:SuperTabMappingForward')") != "0":
|
|
self._supertab_keys = (
|
|
vim.eval("g:SuperTabMappingForward"),
|
|
vim.eval("g:SuperTabMappingBackward"),
|
|
)
|
|
else:
|
|
self._supertab_keys = [ '', '' ]
|
|
|
|
for idx, sttrig in enumerate(self._supertab_keys):
|
|
if trigger.lower() == sttrig.lower():
|
|
if idx == 0:
|
|
feedkey= r"\<c-n>"
|
|
elif idx == 1:
|
|
feedkey = r"\<c-p>"
|
|
# Use remap mode so SuperTab mappings will be invoked.
|
|
mode = "m"
|
|
break
|
|
|
|
if feedkey:
|
|
vim.command(r'call feedkeys("%s", "%s")' % (feedkey, mode))
|
|
|
|
def _ensure_snippets_loaded(self):
|
|
filetypes = vim.eval("&filetype").split(".") + [ "all" ]
|
|
for ft in filetypes[::-1]:
|
|
if len(ft) and ft not in self._snippets:
|
|
self._load_snippets_for(ft)
|
|
|
|
return filetypes
|
|
|
|
def _try_expand(self):
|
|
filetypes = self._ensure_snippets_loaded()
|
|
|
|
self._expect_move_wo_change = False
|
|
|
|
lineno,col = vim.current.window.cursor
|
|
if col == 0:
|
|
return False
|
|
|
|
line = vim.current.line
|
|
|
|
if col > 0 and line[col-1] in string.whitespace:
|
|
return False
|
|
|
|
# Get the word to the left of the current edit position
|
|
before,after = line[:col], line[col:]
|
|
|
|
word = before.split()[-1]
|
|
found_snippets = []
|
|
for ft in filetypes[::-1]:
|
|
found_snippets += self._find_snippets(ft, word)
|
|
|
|
# Search if any of the snippets overwrites the previous
|
|
snippets = []
|
|
for s in found_snippets:
|
|
if s.overwrites_previous:
|
|
snippets = []
|
|
snippets.append(s)
|
|
|
|
# Check if there are any only whitespace in front snippets
|
|
text_before = before.rstrip()[:-len(word)]
|
|
if text_before.strip(" \t") != '':
|
|
snippets = [ s for s in snippets if not s.needs_ws_in_front ]
|
|
|
|
if not len(snippets):
|
|
# No snippet found
|
|
return False
|
|
elif len(snippets) == 1:
|
|
snippet, = snippets
|
|
else:
|
|
display = repr(
|
|
[ "%i: %s" % (i+1,s.description) for i,s in
|
|
enumerate(snippets)
|
|
]
|
|
)
|
|
|
|
try:
|
|
rv = vim.eval("inputlist(%s)" % display)
|
|
if rv is None or rv == '0':
|
|
return True
|
|
rv = int(rv)
|
|
if rv > len(snippets):
|
|
rv = len(snippets)
|
|
snippet = snippets[rv-1]
|
|
except vim.error, e:
|
|
if str(e) == 'invalid expression':
|
|
return True
|
|
raise
|
|
|
|
# Adjust before, maybe the trigger is not the complete word
|
|
text_before += word[:-len(snippet.trigger)]
|
|
|
|
self._expect_move_wo_change = True
|
|
if self._cs:
|
|
# Determine position
|
|
pos = self._vstate.pos
|
|
p_start = self._ctab.abs_start
|
|
|
|
if pos.line == p_start.line:
|
|
end = Position(0, pos.col - p_start.col)
|
|
else:
|
|
end = Position(pos.line - p_start.line, pos.col)
|
|
start = Position(end.line, end.col - len(snippet.trigger))
|
|
|
|
si = snippet.launch(text_before, self._ctab, start, end)
|
|
|
|
self._update_vim_buffer()
|
|
|
|
if si.has_tabs:
|
|
self._csnippets.append(si)
|
|
self._jump()
|
|
else:
|
|
self._vb = VimBuffer(text_before, after)
|
|
|
|
start = Position(lineno-1, len(text_before))
|
|
self._csnippets.append(snippet.launch(text_before, None, start))
|
|
|
|
self._vb.replace_lines(lineno-1, lineno-1,
|
|
self._cs._current_text)
|
|
|
|
self._jump()
|
|
|
|
return True
|
|
|
|
|
|
# Input Handling
|
|
def _chars_entered(self, chars, del_more_lines = 0):
|
|
if (self._span_selected is not None):
|
|
self._ctab.current_text = chars
|
|
|
|
moved = self._span_selected.start.line - \
|
|
self._span_selected.end.line
|
|
self._span_selected = None
|
|
|
|
self._update_vim_buffer(moved + del_more_lines)
|
|
else:
|
|
self._ctab.current_text += chars
|
|
self._update_vim_buffer(del_more_lines)
|
|
|
|
|
|
def _backspace(self, count):
|
|
self._ctab.current_text = self._ctab.current_text[:-count]
|
|
self._update_vim_buffer()
|
|
|
|
def _update_vim_buffer(self, del_more_lines = 0):
|
|
if not len(self._csnippets):
|
|
return
|
|
|
|
s = self._csnippets[0]
|
|
sline = s.abs_start.line
|
|
dlines = s.end.line - s.start.line
|
|
|
|
s.update()
|
|
|
|
# Replace
|
|
dlines += self._vstate.moved.line + del_more_lines
|
|
self._vb.replace_lines(sline, sline + dlines,
|
|
s._current_text)
|
|
ct_end = self._ctab.abs_end
|
|
vim.current.window.cursor = ct_end.line +1, ct_end.col
|
|
|
|
self._vstate.update()
|
|
|
|
def _cs(self):
|
|
if not len(self._csnippets):
|
|
return None
|
|
return self._csnippets[-1]
|
|
_cs = property(_cs)
|
|
|
|
def _parse_snippets(self, ft, fn, file_data=None):
|
|
_SnippetsFileParser(ft, fn, self, file_data).parse()
|
|
|
|
# Loading
|
|
def _load_snippets_for(self, ft):
|
|
self._snippets[ft] = _SnippetDictionary()
|
|
for p in vim.eval("&runtimepath").split(',')[::-1]:
|
|
pattern = p + os.path.sep + "UltiSnips" + os.path.sep + \
|
|
"*%s.snippets" % ft
|
|
|
|
for fn in glob.glob(pattern):
|
|
self._parse_snippets(ft, fn)
|
|
|
|
# Now load for the parents
|
|
for p in self._snippets[ft].extends:
|
|
if p not in self._snippets:
|
|
self._load_snippets_for(p)
|
|
|
|
def _find_snippets(self, ft, trigger, potentially = False):
|
|
"""
|
|
Find snippets matching trigger
|
|
|
|
ft - file type to search
|
|
trigger - trigger to match against
|
|
potentially - also returns snippets that could potentially match; that
|
|
is which triggers start with the current trigger
|
|
"""
|
|
|
|
snips = self._snippets.get(ft,None)
|
|
if not snips:
|
|
return []
|
|
|
|
parent_results = reduce( lambda a,b: a+b,
|
|
[ self._find_snippets(p, trigger, potentially)
|
|
for p in snips.extends ], [])
|
|
|
|
return parent_results + snips.get_matching_snippets(
|
|
trigger, potentially)
|
|
|
|
|
|
UltiSnips_Manager = SnippetManager()
|
|
|