navigator.lua/lua/navigator/signature.lua
2021-11-12 20:06:47 +11:00

76 lines
2.2 KiB
Lua

local gui = require "navigator.gui"
local util = require "navigator.util"
local mk_handler = util.mk_handler
local log = util.log
local partial = util.partial
local lsphelper = require "navigator.lspwrapper"
local cwd = vim.loop.cwd()
local M = {}
--- navigator signature
local match_parameter = function(result)
local signatures = result.signatures
if #signatures < 1 then
return result
end
local signature = signatures[1]
local activeParameter = result.activeParameter or signature.activeParameter
if activeParameter == nil then
return result
end
if signature.parameters == nil then
return
end
if #signature.parameters < 2 or activeParameter + 1 > #signature.parameters then
return result
end
local nextParameter = signature.parameters[activeParameter + 1]
local label = signature.label
if type(nextParameter.label) == "table" then -- label = {2, 4} c style
local range = nextParameter.label
label = label:sub(1, range[1]) .. [[`]] .. label:sub(range[1] + 1, range[2]) .. [[`]]
.. label:sub(range[2] + 1, #label + 1)
signature.label = label
else
if type(nextParameter.label) == "string" then -- label = 'par1 int'
local i, j = label:find(nextParameter.label, 1, true)
if i ~= nil then
label = label:sub(1, i - 1) .. [[`]] .. label:sub(i, j) .. [[`]] .. label:sub(j + 1, #label + 1)
signature.label = label
end
end
end
end
local signature_handler = mk_handler(function(err, result, ctx, config)
if config == nil then
log("config nil")
end
if err then
print("signature help error: ", err, vim.inspect(result), ctx, config)
end
config = config or {}
if config.border == nil then
config.border = _NgConfigValues.border
end
if not (result and result.signatures and result.signatures[1]) then
return
end
match_parameter(result)
local lines = vim.lsp.util.convert_signature_help_to_markdown_lines(result)
if vim.tbl_isempty(lines) then
return
end
local syntax = vim.lsp.util.try_trim_markdown_code_blocks(lines)
config.focus_id = ctx.bufnr .. "lsp_signature"
vim.lsp.util.open_floating_preview(lines, syntax, config)
end)
return {signature_handler = signature_handler}