Guldomanandtakase1121
68e9c4670e
* Revert "core syntax: strip the path from filename on syntax.get (#1168)"
This reverts commit af6c4bc152.
The previous behavior was correct and allowed access to the full path for path-dependant syntaxes.
* Use `Doc.abs_filename` to obtain syntax when possible
This allows matching full paths in language syntaxes, but we lose the
possibility of matching the project root.
54 lines
1.6 KiB
Lua
54 lines
1.6 KiB
Lua
local common = require "core.common"
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local syntax = {}
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syntax.items = {}
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local plain_text_syntax = { name = "Plain Text", patterns = {}, symbols = {} }
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function syntax.add(t)
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if type(t.space_handling) ~= "boolean" then t.space_handling = true end
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if t.patterns then
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-- the rule %s+ gives us a performance gain for the tokenizer in lines with
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-- long amounts of consecutive spaces, can be disabled by plugins where it
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-- causes conflicts by declaring the table property: space_handling = false
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if t.space_handling then
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table.insert(t.patterns, { pattern = "%s+", type = "normal" })
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end
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-- this rule gives us additional performance gain by matching every word
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-- that was not matched by the syntax patterns as a single token, preventing
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-- the tokenizer from iterating over each character individually which is a
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-- lot slower since iteration occurs in lua instead of C and adding to that
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-- it will also try to match every pattern to a single char (same as spaces)
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table.insert(t.patterns, { pattern = "%w+%f[%s]", type = "normal" })
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end
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table.insert(syntax.items, t)
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end
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local function find(string, field)
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local best_match = 0
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local best_syntax
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for i = #syntax.items, 1, -1 do
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local t = syntax.items[i]
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local s, e = common.match_pattern(string, t[field] or {})
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if s and e - s > best_match then
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best_match = e - s
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best_syntax = t
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end
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end
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return best_syntax
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end
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function syntax.get(filename, header)
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return find(filename, "files")
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or (header and find(header, "headers"))
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or plain_text_syntax
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end
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return syntax
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