dotfiles/vim/plugins/ultisnips/pythonx/UltiSnips/snippet/parsing/ultisnips.py

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2018-04-05 13:06:54 +02:00
#!/usr/bin/env python
# encoding: utf-8
"""Parses a UltiSnips snippet definition and launches it into Vim."""
from UltiSnips.snippet.parsing._base import tokenize_snippet_text, finalize, resolve_ambiguity
from UltiSnips.snippet.parsing._lexer import EscapeCharToken, \
VisualToken, TransformationToken, TabStopToken, MirrorToken, \
PythonCodeToken, VimLCodeToken, ShellCodeToken
from UltiSnips.text_objects import EscapedChar, Mirror, PythonCode, \
ShellCode, TabStop, Transformation, VimLCode, Visual
_TOKEN_TO_TEXTOBJECT = {
EscapeCharToken: EscapedChar,
VisualToken: Visual,
ShellCodeToken: ShellCode,
PythonCodeToken: PythonCode,
VimLCodeToken: VimLCode,
}
__ALLOWED_TOKENS = [
EscapeCharToken, VisualToken, TransformationToken, TabStopToken,
MirrorToken, PythonCodeToken, VimLCodeToken, ShellCodeToken
]
def _create_transformations(all_tokens, seen_ts):
"""Create the objects that need to know about tabstops."""
for parent, token in all_tokens:
if isinstance(token, TransformationToken):
if token.number not in seen_ts:
raise RuntimeError(
'Tabstop %i is not known but is used by a Transformation'
% token.number)
Transformation(parent, seen_ts[token.number], token)
def parse_and_instantiate(parent_to, text, indent):
"""Parses a snippet definition in UltiSnips format from 'text' assuming the
current 'indent'.
Will instantiate all the objects and link them as children to
parent_to. Will also put the initial text into Vim.
"""
all_tokens, seen_ts = tokenize_snippet_text(parent_to, text, indent,
__ALLOWED_TOKENS, __ALLOWED_TOKENS, _TOKEN_TO_TEXTOBJECT)
resolve_ambiguity(all_tokens, seen_ts)
_create_transformations(all_tokens, seen_ts)
finalize(all_tokens, seen_ts, parent_to)