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add TranslationReg methods transform for instance of LuaTranslation #224

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add TranslationReg methods transform for instance of LuaTranslation #224

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260f527
add TranslationReg methods transform for instance of LuaTranslation
shewer Jan 16, 2023
44f7d44
增加說明
shewer Feb 9, 2023
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16 changes: 16 additions & 0 deletions src/types.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,21 @@ namespace TranslationReg {
lua_pushvalue(L, 1);
return 2;
}

// tran:transform(func,...) ==> tran.transform(tran,func, ...)
// --> Translation(func,tran,...) -- replace args and call Translation(args...)
// lua_call(L, n, 1); func(tran[,...])
int raw_transform(lua_State *L) {
int n = lua_gettop(L);
if ( 2 > n )
return 0;

lua_pushcfunction(L, raw_make); // tran,func,...,raw_make
lua_rotate(L, 2, -1); // tran, ... raw_make, func
lua_rotate(L, 1, 2); // raw_make, func, tarn,...
lua_call(L, n, 1);
return 1;
}

static const luaL_Reg funcs[] = {
{ "Translation", raw_make },
Expand All @@ -244,6 +259,7 @@ namespace TranslationReg {

static const luaL_Reg methods[] = {
{ "iter", raw_iter },
{ "transform", raw_transform },
{ NULL, NULL },
};

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