257 lines
7.8 KiB
Lua
257 lines
7.8 KiB
Lua
local symbols = require 'outline.symbols'
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local ui = require 'outline.ui'
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local cfg = require 'outline.config'
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local t_utils = require 'outline.utils.table'
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local lsp_utils = require 'outline.utils.lsp_utils'
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local folding = require 'outline.folding'
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local M = {}
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---Parses result from LSP into a table of symbols
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---@param result table The result from a language server.
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---@param depth number? The current depth of the symbol in the hierarchy.
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---@param hierarchy table? A table of booleans which tells if a symbols parent was the last in its group.
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---@param parent table? A reference to the current symbol's parent in the function's recursion
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---@return table
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local function parse_result(result, depth, hierarchy, parent)
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local ret = {}
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for index, value in pairs(result) do
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if not cfg.is_symbol_blacklisted(symbols.kinds[value.kind]) then
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-- the hierarchy is basically a table of booleans which tells whether
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-- the parent was the last in its group or not
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local hir = hierarchy or {}
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-- how many parents this node has, 1 is the lowest value because its
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-- easier to work it
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local level = depth or 1
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-- whether this node is the last in its group
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local isLast = index == #result
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local selectionRange = lsp_utils.get_selection_range(value)
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local range = lsp_utils.get_range(value)
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local node = {
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deprecated = value.deprecated,
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kind = value.kind,
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icon = symbols.icon_from_kind(value.kind),
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name = value.name or value.text,
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detail = value.detail,
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line = selectionRange.start.line,
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character = selectionRange.start.character,
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range_start = range.start.line,
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range_end = range['end'].line,
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depth = level,
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isLast = isLast,
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hierarchy = hir,
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parent = parent,
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}
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table.insert(ret, node)
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local children = nil
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if value.children ~= nil then
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-- copy by value because we dont want it messing with the hir table
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local child_hir = t_utils.array_copy(hir)
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table.insert(child_hir, isLast)
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children = parse_result(value.children, level + 1, child_hir, node)
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end
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node.children = children
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end
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end
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return ret
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end
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---Parses the response from lsp request 'textDocument/documentSymbol' using buf_request_all
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---@param response table The result from buf_request_all
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---@return table outline items
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function M.parse(response)
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local sorted = lsp_utils.sort_symbols(response)
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return parse_result(sorted, nil, nil)
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end
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function M.flatten(outline_items, ret, depth)
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depth = depth or 1
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ret = ret or {}
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for _, value in ipairs(outline_items) do
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table.insert(ret, value)
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value.line_in_outline = #ret
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if value.children ~= nil and not folding.is_folded(value) then
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M.flatten(value.children, ret, depth + 1)
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end
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end
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-- if depth == 1 then
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-- for index, value in ipairs(ret) do
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-- value.line_in_outline = index
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-- end
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-- end
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return ret
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end
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function M.get_lines(flattened_outline_items)
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local lines = {}
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local hl_info = {}
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local guide_hl_info = {}
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local lineno_max = 0
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for node_line, node in ipairs(flattened_outline_items) do
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local depth = node.depth
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local marker_space = (cfg.o.symbol_folding.markers and 1) or 0
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local line = t_utils.str_to_table(string.rep(' ', depth + marker_space))
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local running_length = 1
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if node.range_start+1 > lineno_max then
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lineno_max = node.range_start+1
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end
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local function add_guide_hl(from, to)
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table.insert(guide_hl_info, {
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node_line,
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from,
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to,
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'OutlineGuides',
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})
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end
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for index, _ in ipairs(line) do
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if cfg.o.guides.enabled then
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local guide_markers = cfg.o.guides.markers
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if index == 1 then
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line[index] = ''
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-- if index is last, add a bottom marker if current item is last,
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-- else add a middle marker
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elseif index == #line then
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-- add fold markers
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local fold_markers = cfg.o.symbol_folding.markers
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if fold_markers and folding.is_foldable(node) then
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if folding.is_folded(node) then
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line[index] = fold_markers[1]
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else
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line[index] = fold_markers[2]
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end
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add_guide_hl(
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running_length,
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running_length + vim.fn.strlen(line[index]) - 1
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)
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-- the root level has no vertical markers
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elseif depth > 1 then
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if node.isLast then
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line[index] = guide_markers.bottom
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add_guide_hl(
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running_length,
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running_length + vim.fn.strlen(guide_markers.bottom) - 1
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)
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else
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line[index] = guide_markers.middle
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add_guide_hl(
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running_length,
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running_length + vim.fn.strlen(guide_markers.middle) - 1
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)
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end
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end
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-- else if the parent was not the last in its group, add a
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-- vertical marker because there are items under us and we need
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-- to point to those
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elseif not node.hierarchy[index] and depth > 1 then
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line[index + marker_space] = guide_markers.vertical
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add_guide_hl(
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running_length - 1 + 2 * marker_space,
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running_length
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+ vim.fn.strlen(guide_markers.vertical)
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- 1
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+ 2 * marker_space
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)
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end
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end
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line[index] = line[index] .. ' '
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running_length = running_length + vim.fn.strlen(line[index])
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end
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line[1] = ''
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local final_prefix = line
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local string_prefix = t_utils.table_to_str(final_prefix)
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table.insert(lines, string_prefix .. node.icon .. ' ' .. node.name)
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local hl_start = #string_prefix
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local hl_end = #string_prefix + #node.icon
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local hl_type = cfg.o.symbols.icons[symbols.kinds[node.kind]].hl
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table.insert(hl_info, { node_line, hl_start, hl_end, hl_type })
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node.prefix_length = #string_prefix + #node.icon + 1
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end
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local final_hl = {}
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if cfg.o.outline_items.show_symbol_lineno then
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-- Width of the highest lineno value
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local max_width = #tostring(lineno_max)
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-- Padded prefix to the right of lineno for better readability if linenos
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-- get more than 2 digits.
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local prefix = string.rep(' ', math.max(2, max_width)+1)
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-- Offset to hl_info due to adding lineno on the left of each symbol line
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local total_offset = #prefix
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for i, node in ipairs(flattened_outline_items) do
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lines[i] = prefix .. lines[i]
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table.insert(final_hl, {
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hl_info[i][1], -- node_line
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hl_info[i][2] + total_offset, -- start
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hl_info[i][3] + total_offset, -- end
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hl_info[i][4] -- type
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})
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node.prefix_length = node.prefix_length + total_offset
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end
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if cfg.o.guides.enabled then
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for _, hl in ipairs(guide_hl_info) do
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table.insert(final_hl, {
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hl[1],
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hl[2] + total_offset,
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hl[3] + total_offset,
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hl[4]
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})
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end
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end
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else
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-- Merge lists hl_info and guide_hl_info
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final_hl = hl_info
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if cfg.o.guides.enabled then
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for _, hl in ipairs(guide_hl_info) do
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table.insert(final_hl, hl)
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end
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end
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end
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return lines, final_hl
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end
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function M.get_details(flattened_outline_items)
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local lines = {}
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for _, value in ipairs(flattened_outline_items) do
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table.insert(lines, value.detail or '')
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end
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return lines
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end
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function M.get_lineno(flattened_outline_items)
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local lines = {}
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local max = 0
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for _, value in ipairs(flattened_outline_items) do
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local line = value.range_start+1
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if line > max then
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max = line
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end
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-- Not padded here
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table.insert(lines, tostring(line))
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end
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return lines, max
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end
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return M
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