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--!A cross-platform build utility based on Lua
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
-- Copyright (C) 2015-present, Xmake Open Source Community.
--
-- @author ruki
-- @file check_sizeof.lua
--
-- imports
import("lib.detect.check_cxxsnippets")
local binary_match_pattern = 'INFO:size%[(%d+)%]'
local check_sizeof_template = [[
#define SIZE (sizeof(${TYPE}))
static char info_size[] = {'I', 'N', 'F', 'O', ':', 's','i','z','e','[',
('0' + ((SIZE / 10000)%10)),
('0' + ((SIZE / 1000)%10)),
('0' + ((SIZE / 100)%10)),
('0' + ((SIZE / 10)%10)),
('0' + (SIZE % 10)),
']',
'\0'};
int main(int argc, char *argv[]) {
int require = 0;
require += info_size[argc];
(void)argv;
return require;
}]]
function _binary_match(content)
local match = content:match(binary_match_pattern)
if match then
return match:ltrim("0")
end
end
-- check the size of type
--
-- @param typename the typename
-- @param opt the argument options
-- e.g.
-- { verbose = false, target = [target|option], includes = "stdio.h"
-- , configs = {defines = "xx", cxflags = ""}}
--
-- @return the type size
--
-- @code
-- local size = check_sizeof("long")
-- local size = check_sizeof("std::string", {includes = "string"})
-- @endcode
--
function main(typename, opt)
local snippets = check_sizeof_template:gsub('${TYPE}', typename)
local ok, size = check_cxxsnippets(snippets, table.join(table.wrap(opt), {binary_match = _binary_match}))
if ok then
return size
end
end
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