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--!The Automatic Cross-platform Build Tool
--
-- XMake is free software; you can redistribute it and/or modify
-- it under the terms of the GNU Lesser General Public License as published by
-- the Free Software Foundation; either version 2.1 of the License, or
-- (at your option) any later version.
--
-- XMake is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public License
-- along with XMake;
-- If not, see <a href="http://www.gnu.org/licenses/"> http://www.gnu.org/licenses/</a>
--
-- Copyright (C) 2015 - 2016, ruki All rights reserved.
--
-- @author ruki
-- @file try.lua
--
-- load modules
local utils = require("base/utils")
local table = require("base/table")
local string = require("base/string")
local option = require("base/option")
-- define module
local sandbox_try = sandbox_try or {}
-- traceback
function sandbox_try._traceback(errors)
-- not verbose?
if not option.get("verbose") then
if errors then
-- remove the prefix info
local _, pos = errors:find(":%d+: ")
if pos then
return errors:sub(pos + 1)
end
end
return errors
end
-- init results
local results = ""
if errors then
results = errors .. "\n"
end
results = results .. "stack traceback:\n"
-- make results
local level = 2
while true do
-- get debug info
local info = debug.getinfo(level, "Sln")
-- end?
if not info or (info.name and info.name == "xpcall") then
break
end
-- function?
if info.what == "C" then
results = results .. string.format(" [C]: in function '%s'\n", info.name)
elseif info.name then
results = results .. string.format(" [%s:%d]: in function '%s'\n", info.short_src, info.currentline, info.name)
elseif info.what == "main" then
results = results .. string.format(" [%s:%d]: in main chunk\n", info.short_src, info.currentline)
break
else
results = results .. string.format(" [%s:%d]:\n", info.short_src, info.currentline)
end
-- next
level = level + 1
end
-- ok?
return results
end
-- try
function sandbox_try.try(block)
-- get the try function
local try = block[1]
assert(try)
-- get catch and finally functions
local funcs = block[2]
if funcs and block[3] then
table.join2(funcs, block[2])
end
-- try to call it
local ok, errors = xpcall(try, sandbox_try._traceback)
if not ok then
-- run the catch function
if funcs and funcs.catch then
funcs.catch(errors)
end
end
-- run the finally function
if funcs and funcs.finally then
funcs.finally(utils.ifelse(ok, errors, nil))
end
-- ok?
return utils.ifelse(ok, errors, nil)
end
-- return module
return sandbox_try.try
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