api: rename "msgpack_rpc/defs.h" to "api/private/dispatch.h" and use the header generator.

1 files changed, 0 insertions, 313 deletions

diff --git a/scripts/msgpack-gen.lua b/scripts/msgpack-gen.lua
deleted file mode 100644
index 2da3c174f9..0000000000
--- a/scripts/msgpack-gen.lua
+++ /dev/null
@@ -1,313 +0,0 @@
-lpeg = require('lpeg')
-mpack = require('mpack')
-
--- lpeg grammar for building api metadata from a set of header files. It
--- ignores comments and preprocessor commands and parses a very small subset
--- of C prototypes with a limited set of types
-P, R, S = lpeg.P, lpeg.R, lpeg.S
-C, Ct, Cc, Cg = lpeg.C, lpeg.Ct, lpeg.Cc, lpeg.Cg
-
-any = P(1) -- (consume one character)
-letter = R('az', 'AZ') + S('_$')
-alpha = letter + R('09')
-nl = P('\r\n') + P('\n')
-not_nl = any - nl
-ws = S(' \t') + nl
-fill = ws ^ 0
-c_comment = P('//') * (not_nl ^ 0)
-c_preproc = P('#') * (not_nl ^ 0)
-typed_container =
-  (P('ArrayOf(') + P('DictionaryOf(')) * ((any - P(')')) ^ 1) * P(')')
-c_id = (
-  typed_container +
-  (letter * (alpha ^ 0))
-)
-c_void = P('void')
-c_param_type = (
-  ((P('Error') * fill * P('*') * fill) * Cc('error')) +
-  (C(c_id) * (ws ^ 1))
-  )
-c_type = (C(c_void) * (ws ^ 1)) + c_param_type
-c_param = Ct(c_param_type * C(c_id))
-c_param_list = c_param * (fill * (P(',') * fill * c_param) ^ 0)
-c_params = Ct(c_void + c_param_list)
-c_proto = Ct(
-  Cg(c_type, 'return_type') * Cg(c_id, 'name') *
-  fill * P('(') * fill * Cg(c_params, 'parameters') * fill * P(')') *
-  Cg(Cc(false), 'async') *
-  (fill * Cg((P('FUNC_API_ASYNC') * Cc(true)), 'async') ^ -1) *
-  (fill * Cg((P('FUNC_API_NOEXPORT') * Cc(true)), 'noexport') ^ -1) *
-  fill * P(';')
-  )
-grammar = Ct((c_proto + c_comment + c_preproc + ws) ^ 1)
-
--- we need at least 2 arguments since the last one is the output file
-assert(#arg >= 1)
-functions = {}
-
--- names of all headers relative to the source root (for inclusion in the
--- generated file)
-headers = {}
--- output file(dispatch function + metadata serialized with msgpack)
-outputf = arg[#arg]
-
--- read each input file, parse and append to the api metadata
-for i = 1, #arg - 1 do
-  local full_path = arg[i]
-  local parts = {}
-  for part in string.gmatch(full_path, '[^/]+') do
-    parts[#parts + 1] = part
-  end
-  headers[#headers + 1] = parts[#parts - 1]..'/'..parts[#parts]
-
-  local input = io.open(full_path, 'rb')
-  local tmp = grammar:match(input:read('*all'))
-  for i = 1, #tmp do
-    local fn = tmp[i]
-    if not fn.noexport then
-      functions[#functions + 1] = tmp[i]
-      if #fn.parameters ~= 0 and fn.parameters[1][2] == 'channel_id' then
-        -- this function should receive the channel id
-        fn.receives_channel_id = true
-        -- remove the parameter since it won't be passed by the api client
-        table.remove(fn.parameters, 1)
-      end
-      if #fn.parameters ~= 0 and fn.parameters[#fn.parameters][1] == 'error' then
-        -- function can fail if the last parameter type is 'Error'
-        fn.can_fail = true
-        -- remove the error parameter, msgpack has it's own special field
-        -- for specifying errors
-        fn.parameters[#fn.parameters] = nil
-      end
-    end
-  end
-  input:close()
-end
-
-
--- start building the output
-output = io.open(outputf, 'wb')
-
-output:write([[
-#include <inttypes.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <assert.h>
-#include <msgpack.h>
-
-#include "nvim/map.h"
-#include "nvim/log.h"
-#include "nvim/vim.h"
-#include "nvim/msgpack_rpc/helpers.h"
-#include "nvim/msgpack_rpc/defs.h"
-#include "nvim/api/private/helpers.h"
-#include "nvim/api/private/defs.h"
-]])
-
-for i = 1, #headers do
-  if headers[i]:sub(-12) ~= '.generated.h' then
-    output:write('\n#include "nvim/'..headers[i]..'"')
-  end
-end
-
-output:write([[
-
-
-static const uint8_t msgpack_metadata[] = {
-
-]])
--- serialize the API metadata using msgpack and embed into the resulting
--- binary for easy querying by clients
-packed = mpack.pack(functions)
-for i = 1, #packed do
-  output:write(string.byte(packed, i)..', ')
-  if i % 10 == 0 then
-    output:write('\n  ')
-  end
-end
-output:write([[
-};
-
-void msgpack_rpc_init_function_metadata(Dictionary *metadata)
-{
-  msgpack_unpacked unpacked;
-  msgpack_unpacked_init(&unpacked);
-  if (msgpack_unpack_next(&unpacked,
-                          (const char *)msgpack_metadata,
-                          sizeof(msgpack_metadata),
-                          NULL) != MSGPACK_UNPACK_SUCCESS) {
-    abort();
-  }
-  Object functions;
-  msgpack_rpc_to_object(&unpacked.data, &functions);
-  msgpack_unpacked_destroy(&unpacked);
-  PUT(*metadata, "functions", functions);
-}
-
-]])
-
-local function real_type(type)
-  local rv = type
-  if typed_container:match(rv) then
-    if rv:match('Array') then
-      rv = 'Array'
-    else
-      rv = 'Dictionary'
-    end
-  end
-  return rv
-end
-
--- start the handler functions. Visit each function metadata to build the
--- handler function with code generated for validating arguments and calling to
--- the real API.
-for i = 1, #functions do
-  local fn = functions[i]
-  local args = {}
-
-  output:write('static Object handle_'..fn.name..'(uint64_t channel_id, uint64_t request_id, Array args, Error *error)')
-  output:write('\n{')
-  output:write('\n  Object ret = NIL;')
-  -- Declare/initialize variables that will hold converted arguments
-  for j = 1, #fn.parameters do
-    local param = fn.parameters[j]
-    local converted = 'arg_'..j
-    output:write('\n  '..param[1]..' '..converted..' api_init_'..string.lower(real_type(param[1]))..';')
-  end
-  output:write('\n')
-  output:write('\n  if (args.size != '..#fn.parameters..') {')
-  output:write('\n    snprintf(error->msg, sizeof(error->msg), "Wrong number of arguments: expecting '..#fn.parameters..' but got %zu", args.size);')
-  output:write('\n    error->set = true;')
-  output:write('\n    goto cleanup;')
-  output:write('\n  }\n')
-
-  -- Validation/conversion for each argument
-  for j = 1, #fn.parameters do
-    local converted, convert_arg, param, arg
-    param = fn.parameters[j]
-    converted = 'arg_'..j
-    local rt = real_type(param[1])
-    if rt ~= 'Object' then
-      output:write('\n  if (args.items['..(j - 1)..'].type == kObjectType'..rt..') {')
-      output:write('\n    '..converted..' = args.items['..(j - 1)..'].data.'..rt:lower()..';')
-      if rt:match('^Buffer$') or rt:match('^Window$') or rt:match('^Tabpage$') or rt:match('^Boolean$') then
-        -- accept positive integers for Buffers, Windows and Tabpages
-        output:write('\n  } else if (args.items['..(j - 1)..'].type == kObjectTypeInteger && args.items['..(j - 1)..'].data.integer > 0) {')
-        output:write('\n    '..converted..' = (unsigned)args.items['..(j - 1)..'].data.integer;')
-      end
-      output:write('\n  } else {')
-      output:write('\n    snprintf(error->msg, sizeof(error->msg), "Wrong type for argument '..j..', expecting '..param[1]..'");')
-      output:write('\n    error->set = true;')
-      output:write('\n    goto cleanup;')
-      output:write('\n  }\n')
-    else
-      output:write('\n  '..converted..' = args.items['..(j - 1)..'];\n')
-    end
-
-    args[#args + 1] = converted
-  end
-
-  -- function call
-  local call_args = table.concat(args, ', ')
-  output:write('\n  ')
-  if fn.return_type ~= 'void' then
-    -- has a return value, prefix the call with a declaration
-    output:write(fn.return_type..' rv = ')
-  end
-
-  -- write the function name and the opening parenthesis
-  output:write(fn.name..'(')
-
-  if fn.receives_channel_id then
-    -- if the function receives the channel id, pass it as first argument
-    if #args > 0 or fn.can_fail then
-      output:write('channel_id, '..call_args)
-    else
-      output:write('channel_id')
-    end
-  else
-    output:write(call_args)
-  end
-
-  if fn.can_fail then
-    -- if the function can fail, also pass a pointer to the local error object
-    if #args > 0 then
-      output:write(', error);\n')
-    else
-      output:write('error);\n')
-    end
-    -- and check for the error
-    output:write('\n  if (error->set) {')
-    output:write('\n    goto cleanup;')
-    output:write('\n  }\n')
-  else
-    output:write(');\n')
-  end
-
-  if fn.return_type ~= 'void' then
-    output:write('\n  ret = '..string.upper(real_type(fn.return_type))..'_OBJ(rv);')
-  end
-  -- Now generate the cleanup label for freeing memory allocated for the
-  -- arguments
-  output:write('\n\ncleanup:');
-
-  for j = 1, #fn.parameters do
-    local param = fn.parameters[j]
-    output:write('\n  api_free_'..string.lower(real_type(param[1]))..'(arg_'..j..');')
-  end
-  output:write('\n  return ret;\n}\n\n');
-end
-
--- Generate a function that initializes method names with handler functions
-output:write([[
-static Map(String, MsgpackRpcRequestHandler) *methods = NULL;
-
-void msgpack_rpc_add_method_handler(String method, MsgpackRpcRequestHandler handler)
-{
-  map_put(String, MsgpackRpcRequestHandler)(methods, method, handler);
-}
-
-void msgpack_rpc_init_method_table(void)
-{
-  methods = map_new(String, MsgpackRpcRequestHandler)();
-
-]])
-
--- Keep track of the maximum method name length in order to avoid walking
--- strings longer than that when searching for a method handler
-local max_fname_len = 0
-for i = 1, #functions do
-  local fn = functions[i]
-  output:write('  msgpack_rpc_add_method_handler('..
-               '(String) {.data = "'..fn.name..'", '..
-               '.size = sizeof("'..fn.name..'") - 1}, '..
-               '(MsgpackRpcRequestHandler) {.fn = handle_'..  fn.name..
-               ', .async = '..tostring(fn.async)..'});\n')
-
-  if #fn.name > max_fname_len then
-    max_fname_len = #fn.name
-  end
-end
-
-output:write('\n}\n\n')
-
-output:write([[
-MsgpackRpcRequestHandler msgpack_rpc_get_handler_for(const char *name,
-                                                     size_t name_len)
-{
-  String m = {
-    .data=(char *)name,
-    .size=MIN(name_len, ]]..max_fname_len..[[)
-  };
-  MsgpackRpcRequestHandler rv =
-    map_get(String, MsgpackRpcRequestHandler)(methods, m);
-
-  if (!rv.fn) {
-    rv.fn = msgpack_rpc_handle_missing_method;
-  }
-
-  return rv;
-}
-]])
-
-output:close()