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Reduce code blocks in markdown previews.

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If the preview is just a code block, then use the language as the
filetype instead of using markdown.
This reduces the size of the preview.
This commit is contained in:
Ashkan Kiani 2019-11-20 11:23:50 -08:00
parent 91f4bb0aee
commit 69a0712a9c
1 changed files with 53 additions and 1 deletions
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54
runtime/lua/vim/lsp/builtin_callbacks.lua
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@ -81,6 +81,56 @@ builtin_callbacks['textDocument/publishDiagnostics'] = function(_, _, result)
-- util.buf_loclist(bufnr, result.diagnostics)
end
local function focusable_popup()
local popup_win
return function(winnr)
if popup_win and nvim.win_is_valid(popup_win) then
if nvim.get_current_win() == popup_win then
nvim.ex.wincmd "p"
else
nvim.set_current_win(popup_win)
end
return
end
popup_win = winnr
end
end
local hover_popup = focusable_popup()
local function trim_empty_lines(lines)
local result = {}
for _, line in ipairs(lines) do
if #line > 0 then
table.insert(result, line)
end
end
return result
end
-- Accepts markdown lines and tries to reduce it to a filetype if it is
-- just a single code block.
local function try_trim_code_blocks(lines)
local language_id = lines[1]:match("^```(.*)")
if language_id then
local has_inner_code_fence = false
for i = 2, (#lines - 1) do
local line = lines[i]
if line:sub(1,3) == '```' then
has_inner_code_fence = true
break
end
end
-- No inner code fences + starting with code fence = hooray.
if not has_inner_code_fence then
table.remove(lines, 1)
table.remove(lines)
return lines, language_id
end
end
return lines, 'markdown'
end
-- textDocument/hover
-- https://microsoft.github.io/language-server-protocol/specification#textDocument_hover
-- @params MarkedString | MarkedString[] | MarkupContent
@ -91,10 +141,12 @@ builtin_callbacks['textDocument/hover'] = function(_, _, result)
if result.contents ~= nil then
local markdown_lines = util.convert_input_to_markdown_lines(result.contents)
markdown_lines = trim_empty_lines(markdown_lines)
if vim.tbl_isempty(markdown_lines) then
markdown_lines = { 'No information available' }
end
util.open_floating_preview(markdown_lines, 'markdown')
local _, winnr = util.open_floating_preview(try_trim_code_blocks(markdown_lines))
hover_popup(winnr)
end
end