treesitter: refactor and use lua regexes

1 files changed, 0 insertions, 116 deletions

diff --git a/runtime/lua/vim/tshighlighter.lua b/runtime/lua/vim/tshighlighter.lua
deleted file mode 100644
index 6465751ae8..0000000000
--- a/runtime/lua/vim/tshighlighter.lua
+++ /dev/null
@@ -1,116 +0,0 @@
-local a = vim.api
-
--- support reload for quick experimentation
-local TSHighlighter = rawget(vim.treesitter, 'TSHighlighter') or {}
-TSHighlighter.__index = TSHighlighter
-local ts_hs_ns = a.nvim_create_namespace("treesitter_hl")
-
--- These are conventions defined by tree-sitter, though it
--- needs to be user extensible also.
--- TODO(bfredl): this is very much incomplete, we will need to
--- go through a few tree-sitter provided queries and decide
--- on translations that makes the most sense.
-TSHighlighter.hl_map = {
-    keyword="Keyword",
-    string="String",
-    type="Type",
-    comment="Comment",
-    constant="Constant",
-    operator="Operator",
-    number="Number",
-    label="Label",
-    ["function"]="Function",
-    ["function.special"]="Function",
-}
-
-function TSHighlighter.new(query, bufnr, ft)
-  local self = setmetatable({}, TSHighlighter)
-  self.parser = vim.treesitter.get_parser(
-    bufnr,
-    ft,
-    {
-      on_changedtree = function(...) self:on_changedtree(...) end,
-      on_lines = function() self.root = self.parser:parse():root() end
-    }
-  )
-
-  self.buf = self.parser.bufnr
-
-  local tree = self.parser:parse()
-  self.root = tree:root()
-  self:set_query(query)
-  self.edit_count = 0
-  self.redraw_count = 0
-  self.line_count = {}
-  a.nvim_buf_set_option(self.buf, "syntax", "")
-
-  -- Tricky: if syntax hasn't been enabled, we need to reload color scheme
-  -- but use synload.vim rather than syntax.vim to not enable
-  -- syntax FileType autocmds. Later on we should integrate with the
-  -- `:syntax` and `set syntax=...` machinery properly.
-  if vim.g.syntax_on ~= 1 then
-    vim.api.nvim_command("runtime! syntax/synload.vim")
-  end
-  return self
-end
-
-local function is_highlight_name(capture_name)
-  local firstc = string.sub(capture_name, 1, 1)
-  return firstc ~= string.lower(firstc)
-end
-
-function TSHighlighter:get_hl_from_capture(capture)
-
-  local name = self.query.captures[capture]
-
-  if is_highlight_name(name) then
-    -- From "Normal.left" only keep "Normal"
-    return vim.split(name, '.', true)[1]
-  else
-    -- Default to false to avoid recomputing
-    return TSHighlighter.hl_map[name]
-  end
-end
-
-function TSHighlighter:set_query(query)
-  if type(query) == "string" then
-    query = vim.treesitter.parse_query(self.parser.lang, query)
-  end
-  self.query = query
-
-  self.hl_cache = setmetatable({}, {
-    __index = function(table, capture)
-      local hl = self:get_hl_from_capture(capture)
-      rawset(table, capture, hl)
-
-      return hl
-    end
-  })
-
-  self:on_changedtree({{self.root:range()}})
-end
-
-function TSHighlighter:on_changedtree(changes)
-  -- Get a fresh root
-  self.root = self.parser.tree:root()
-
-  for _, ch in ipairs(changes or {}) do
-    -- Try to be as exact as possible
-    local changed_node = self.root:descendant_for_range(ch[1], ch[2], ch[3], ch[4])
-
-    a.nvim_buf_clear_namespace(self.buf, ts_hs_ns, ch[1], ch[3])
-
-    for capture, node in self.query:iter_captures(changed_node, self.buf, ch[1], ch[3] + 1) do
-      local start_row, start_col, end_row, end_col = node:range()
-      local hl = self.hl_cache[capture]
-      if hl then
-        a.nvim__buf_add_decoration(self.buf, ts_hs_ns, hl,
-          start_row, start_col,
-          end_row, end_col,
-          {})
-      end
-    end
-  end
-end
-
-return TSHighlighter