32 lines
697 B
Lua
32 lines
697 B
Lua
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-- text object matching a lexer token
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local MAX_CONTEXT = 32768
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vis:textobject_new("ii", function(win, pos)
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if not win.syntax or not vis.lexers.load then
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return nil
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end
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local before, after = pos - MAX_CONTEXT, pos + MAX_CONTEXT
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if before < 0 then
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before = 0
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end
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-- TODO make sure we start at a line boundary?
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local lexer = vis.lexers.load(win.syntax, nil, true)
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local data = win.file:content(before, after - before)
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local tokens = lexer:lex(data)
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local cur = before
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for i = 1, #tokens, 2 do
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local token_next = before + tokens[i+1] - 1
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if cur <= pos and pos < token_next then
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return cur, token_next
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end
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cur = token_next
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end
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return nil
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end, "Current lexer token")
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