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Provide SWIGTYPE MOVE typemaps in swigmove.i

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For implementing full move semantics when passing parameters by value.
Based on SWIGTYPE && and std::unique_ptr typemaps which implement move
semantics.

Added for all languages, but untested for: Go, Ocaml, R, Scilab (and
unlikely to be fully functional for same reasons as for std::unique_ptr
support).

Issue #999
This commit is contained in:
William S Fulton 2022-09-16 08:36:25 +01:00
commit dad7c93ca0
41 changed files with 909 additions and 19 deletions
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28
Examples/test-suite/lua/cpp11_move_typemaps_runme.lua Normal file
View file

@ -0,0 +1,28 @@
require("import") -- the import fn
import("cpp11_move_typemaps") -- import code
-- catch "undefined" global variables
local env = _ENV -- Lua 5.2
if not env then env = getfenv () end -- Lua 5.1
setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
cpp11_move_typemaps.Counter.reset_counts()
mo = cpp11_move_typemaps.MoveOnly(111)
cpp11_move_typemaps.Counter.check_counts(1, 0, 0, 0, 0, 0)
cpp11_move_typemaps.MoveOnly.take(mo)
cpp11_move_typemaps.Counter.check_counts(1, 0, 0, 1, 0, 2)
mo = nil
cpp11_move_typemaps.Counter.check_counts(1, 0, 0, 1, 0, 2)
cpp11_move_typemaps.Counter.reset_counts()
mo = cpp11_move_typemaps.MovableCopyable(111)
cpp11_move_typemaps.Counter.check_counts(1, 0, 0, 0, 0, 0)
cpp11_move_typemaps.MovableCopyable.take(mo)
cpp11_move_typemaps.Counter.check_counts(1, 0, 0, 1, 0, 2)
mo = nil
cpp11_move_typemaps.Counter.check_counts(1, 0, 0, 1, 0, 2)
mo = cpp11_move_typemaps.MoveOnly(222)
cpp11_move_typemaps.MoveOnly.take(mo)
s, msg = pcall(function() cpp11_move_typemaps.MoveOnly.take(mo) end)
assert(s == false and msg:find("Cannot release ownership as memory is not owned", 1, true))