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https://github.com/neovim/neovim.git
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67 lines
2.0 KiB
Lua
67 lines
2.0 KiB
Lua
local M = {}
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local s_err ---@type string?
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local s_host ---@type string?
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function M.require(host, prog)
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local args = { prog, '-e', 'use Neovim::Ext; start_host();' }
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-- Collect registered perl plugins into args
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local perl_plugins = vim.fn['remote#host#PluginsForHost'](host.name) ---@type any
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---@param plugin any
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for _, plugin in ipairs(perl_plugins) do
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table.insert(args, plugin.path)
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end
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return vim.fn['provider#Poll'](args, host.orig_name, '$NVIM_PERL_LOG_FILE')
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end
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--- @return string? path to detected perl, if any; nil if not found
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--- @return string? error message if perl can't be detected; nil if success
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function M.detect()
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-- use g:perl_host_prog if set or check if perl is on the path
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local prog = vim.fn.exepath(vim.g.perl_host_prog or 'perl')
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if prog == '' then
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return nil, 'No perl executable found'
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end
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-- if perl is available, make sure we have 5.22+
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vim.fn.system({ prog, '-e', 'use v5.22' })
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if vim.v.shell_error ~= 0 then
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return nil, 'Perl version is too old, 5.22+ required'
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end
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-- if perl is available, make sure the required module is available
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vim.fn.system({ prog, '-W', '-MNeovim::Ext', '-e', '' })
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if vim.v.shell_error ~= 0 then
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return nil, '"Neovim::Ext" cpan module is not installed'
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end
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return prog, nil
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end
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function M.call(method, args)
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if s_err then
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return
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end
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if not s_host then
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-- Ensure that we can load the Perl host before bootstrapping
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local ok, result = pcall(vim.fn['remote#host#Require'], 'legacy-perl-provider') ---@type any, any
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if not ok then
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s_err = result
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vim.api.nvim_echo({ { result, 'WarningMsg' } }, true, {})
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return
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end
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s_host = result
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end
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return vim.fn.rpcrequest(s_host, 'perl_' .. method, unpack(args))
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end
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function M.start()
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-- The perl provider plugin will run in a separate instance of the perl host.
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vim.fn['remote#host#RegisterClone']('legacy-perl-provider', 'perl')
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vim.fn['remote#host#RegisterPlugin']('legacy-perl-provider', 'ScriptHost.pm', {})
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end
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return M
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