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local mpack = vim.mpack
assert(#arg == 5)
local input = io.open(arg[1], 'rb')
local call_output = io.open(arg[2], 'wb')
local remote_output = io.open(arg[3], 'wb')
local metadata_output = io.open(arg[4], 'wb')
local client_output = io.open(arg[5], 'wb')
local c_grammar = require('generators.c_grammar')
local events = c_grammar.grammar:match(input:read('*all'))
local hashy = require 'generators.hashy'
local function write_signature(output, ev, prefix, notype)
output:write('(' .. prefix)
if prefix == '' and #ev.parameters == 0 then
output:write('void')
end
for j = 1, #ev.parameters do
if j > 1 or prefix ~= '' then
output:write(', ')
end
local param = ev.parameters[j]
if not notype then
output:write(param[1] .. ' ')
end
output:write(param[2])
end
output:write(')')
end
local function write_arglist(output, ev)
if #ev.parameters == 0 then
return
end
output:write(' MAXSIZE_TEMP_ARRAY(args, ' .. #ev.parameters .. ');\n')
for j = 1, #ev.parameters do
local param = ev.parameters[j]
local kind = string.upper(param[1])
output:write(' ADD_C(args, ')
output:write(kind .. '_OBJ(' .. param[2] .. ')')
output:write(');\n')
end
end
local function call_ui_event_method(output, ev)
output:write('void ui_client_event_' .. ev.name .. '(Array args)\n{\n')
local hlattrs_args_count = 0
if #ev.parameters > 0 then
output:write(' if (args.size < ' .. #ev.parameters)
for j = 1, #ev.parameters do
local kind = ev.parameters[j][1]
if kind ~= 'Object' then
if kind == 'HlAttrs' then
kind = 'Dict'
end
output:write('\n || args.items[' .. (j - 1) .. '].type != kObjectType' .. kind .. '')
end
end
output:write(') {\n')
output:write(' ELOG("Error handling ui event \'' .. ev.name .. '\'");\n')
output:write(' return;\n')
output:write(' }\n')
end
for j = 1, #ev.parameters do
local param = ev.parameters[j]
local kind = param[1]
output:write(' ' .. kind .. ' arg_' .. j .. ' = ')
if kind == 'HlAttrs' then
-- The first HlAttrs argument is rgb_attrs and second is cterm_attrs
output:write(
'ui_client_dict2hlattrs(args.items['
.. (j - 1)
.. '].data.dict, '
.. (hlattrs_args_count == 0 and 'true' or 'false')
.. ');\n'
)
hlattrs_args_count = hlattrs_args_count + 1
elseif kind == 'Object' then
output:write('args.items[' .. (j - 1) .. '];\n')
elseif kind == 'Window' then
output:write('(Window)args.items[' .. (j - 1) .. '].data.integer;\n')
else
output:write('args.items[' .. (j - 1) .. '].data.' .. string.lower(kind) .. ';\n')
end
end
output:write(' tui_' .. ev.name .. '(tui')
for j = 1, #ev.parameters do
output:write(', arg_' .. j)
end
output:write(');\n')
output:write('}\n\n')
end
events = vim.tbl_filter(function(ev)
return ev[1] ~= 'empty' and ev[1] ~= 'preproc'
end, events)
for i = 1, #events do
local ev = events[i]
assert(ev.return_type == 'void')
if ev.since == nil and not ev.noexport then
print('Ui event ' .. ev.name .. ' lacks since field.\n')
os.exit(1)
end
ev.since = tonumber(ev.since)
local args = #ev.parameters > 0 and 'args' or 'noargs'
if not ev.remote_only then
if not ev.remote_impl and not ev.noexport then
remote_output:write('void remote_ui_' .. ev.name)
write_signature(remote_output, ev, 'RemoteUI *ui')
remote_output:write('\n{\n')
write_arglist(remote_output, ev)
remote_output:write(' push_call(ui, "' .. ev.name .. '", ' .. args .. ');\n')
remote_output:write('}\n\n')
end
end
if not (ev.remote_only and ev.remote_impl) then
call_output:write('void ui_call_' .. ev.name)
write_signature(call_output, ev, '')
call_output:write('\n{\n')
if ev.remote_only then
-- Lua callbacks may emit other events or the same event again. Avoid the latter
-- by adding a recursion guard to each generated function that may call a Lua callback.
call_output:write(' static bool entered = false;\n')
call_output:write(' if (entered) {\n')
call_output:write(' return;\n')
call_output:write(' }\n')
call_output:write(' entered = true;\n')
write_arglist(call_output, ev)
call_output:write((' ui_call_event("%s", %s, %s)'):format(ev.name, tostring(ev.fast), args))
call_output:write(';\n entered = false;\n')
elseif ev.compositor_impl then
call_output:write(' ui_comp_' .. ev.name)
write_signature(call_output, ev, '', true)
call_output:write(';\n')
call_output:write(' UI_CALL')
write_signature(call_output, ev, '!ui->composed, ' .. ev.name .. ', ui', true)
call_output:write(';\n')
else
call_output:write(' UI_CALL')
write_signature(call_output, ev, 'true, ' .. ev.name .. ', ui', true)
call_output:write(';\n')
end
call_output:write('}\n\n')
end
if ev.compositor_impl then
call_output:write('void ui_composed_call_' .. ev.name)
write_signature(call_output, ev, '')
call_output:write('\n{\n')
call_output:write(' UI_CALL')
write_signature(call_output, ev, 'ui->composed, ' .. ev.name .. ', ui', true)
call_output:write(';\n')
call_output:write('}\n\n')
end
if (not ev.remote_only) and not ev.noexport and not ev.client_impl and not ev.client_ignore then
call_ui_event_method(client_output, ev)
end
end
local client_events = {}
for _, ev in ipairs(events) do
if (not ev.noexport) and ((not ev.remote_only) or ev.client_impl) and not ev.client_ignore then
client_events[ev.name] = ev
end
end
local hashorder, hashfun = hashy.hashy_hash(
'ui_client_handler',
vim.tbl_keys(client_events),
function(idx)
return 'event_handlers[' .. idx .. '].name'
end
)
client_output:write('static const UIClientHandler event_handlers[] = {\n')
for _, name in ipairs(hashorder) do
client_output:write(' { .name = "' .. name .. '", .fn = ui_client_event_' .. name .. '},\n')
end
client_output:write('\n};\n\n')
client_output:write(hashfun)
call_output:close()
remote_output:close()
client_output:close()
-- don't expose internal attributes like "impl_name" in public metadata
local exported_attributes = { 'name', 'parameters', 'since', 'deprecated_since' }
local exported_events = {}
for _, ev in ipairs(events) do
local ev_exported = {}
for _, attr in ipairs(exported_attributes) do
ev_exported[attr] = ev[attr]
end
for _, p in ipairs(ev_exported.parameters) do
if p[1] == 'HlAttrs' or p[1] == 'Dict' then
-- TODO(justinmk): for back-compat, but do clients actually look at this?
p[1] = 'Dictionary'
end
end
if not ev.noexport then
exported_events[#exported_events + 1] = ev_exported
end
end
metadata_output:write(mpack.encode(exported_events))
metadata_output:close()
|
