Get the token at a given cursor Used for introspection. Function calls are prioritized, so the token for the callable will be returned if the cursor is anywhere inside the call. Parameters ---------- cell : str A block of Python code cursor_pos : int Th
(cell: str, cursor_pos: int = 0)
| 96 | |
| 97 | |
| 98 | def token_at_cursor(cell: str, cursor_pos: int = 0) -> str: |
| 99 | """Get the token at a given cursor |
| 100 | |
| 101 | Used for introspection. |
| 102 | |
| 103 | Function calls are prioritized, so the token for the callable will be returned |
| 104 | if the cursor is anywhere inside the call. |
| 105 | |
| 106 | Parameters |
| 107 | ---------- |
| 108 | cell : str |
| 109 | A block of Python code |
| 110 | cursor_pos : int |
| 111 | The location of the cursor in the block where the token should be found |
| 112 | """ |
| 113 | names: list[str] = [] |
| 114 | call_names: list[str] = [] |
| 115 | closing_call_name: str | None = None |
| 116 | most_recent_outer_name: str | None = None |
| 117 | |
| 118 | offsets = {1: 0} # lines start at 1 |
| 119 | intersects_with_cursor = False |
| 120 | cur_token_is_name = False |
| 121 | tokens: list[Token | None] = [ |
| 122 | Token(*tup) for tup in generate_tokens(StringIO(cell).readline) |
| 123 | ] |
| 124 | if not tokens: |
| 125 | return "" |
| 126 | for prev_tok, (tok, next_tok) in zip( |
| 127 | [None] + tokens, itertools.pairwise(tokens + [None]) |
| 128 | ): |
| 129 | # token, text, start, end, line = tup |
| 130 | start_line, start_col = tok.start |
| 131 | end_line, end_col = tok.end |
| 132 | if end_line + 1 not in offsets: |
| 133 | # keep track of offsets for each line |
| 134 | lines = tok.line.splitlines(True) |
| 135 | for lineno, line in enumerate(lines, start_line + 1): |
| 136 | if lineno not in offsets: |
| 137 | offsets[lineno] = offsets[lineno - 1] + len(line) |
| 138 | |
| 139 | closing_call_name = None |
| 140 | |
| 141 | offset = offsets[start_line] |
| 142 | if offset + start_col > cursor_pos: |
| 143 | # current token starts after the cursor, |
| 144 | # don't consume it |
| 145 | break |
| 146 | |
| 147 | if cur_token_is_name := tok.token == tokenize.NAME and not iskeyword(tok.text): |
| 148 | if ( |
| 149 | names |
| 150 | and prev_tok |
| 151 | and prev_tok.token == tokenize.OP |
| 152 | and prev_tok.text == "." |
| 153 | ): |
| 154 | names[-1] = "%s.%s" % (names[-1], tok.text) |
| 155 | else: |
searching dependent graphs…