77 lines
1.7 KiB
Lua
77 lines
1.7 KiB
Lua
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local M = {}
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local conditions = require("luasnip.extras.conditions")
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-- {{{ Math mode detection
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-- Taken from: https://github.com/iurimateus/luasnip-latex-snippets.nvim/blob/main/lua/luasnip-latex-snippets/util/ts_utils.lua
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local MATH_NODES = {
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displayed_equation = true,
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inline_formula = true,
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math_environment = true,
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}
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local TEXT_NODES = {
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text_mode = true,
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label_definition = true,
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label_reference = true,
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}
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local function get_node_at_cursor()
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local pos = vim.api.nvim_win_get_cursor(0)
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-- Subtract one to account for 1-based row indexing in nvim_win_get_cursor
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local row, col = pos[1] - 1, pos[2]
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local parser = vim.treesitter.get_parser(0, "latex")
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if not parser then
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return
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end
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local root_tree = parser:parse({ row, col, row, col })[1]
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local root = root_tree and root_tree:root()
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if not root then
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return
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end
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return root:named_descendant_for_range(row, col, row, col)
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end
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local function in_text(check_parent)
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local node = get_node_at_cursor()
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while node do
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if node:type() == "text_mode" then
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if check_parent then
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-- For \text{}
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local parent = node:parent()
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if parent and MATH_NODES[parent:type()] then
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return false
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end
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end
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return true
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elseif MATH_NODES[node:type()] then
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return false
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end
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node = node:parent()
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end
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return true
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end
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M.math = conditions.make_condition(function()
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local node = get_node_at_cursor()
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while node do
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if TEXT_NODES[node:type()] then
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return false
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elseif MATH_NODES[node:type()] then
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return true
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end
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node = node:parent()
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end
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return false
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end)
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M.text = conditions.make_condition(function()
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return in_text(true)
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end)
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-- }}}
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return M
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