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// testtypedefs.cpp --- Sample with some fake bits out of std::string
// Copyright (C) 2008-2025 Free Software Foundation, Inc.
// Author: Eric M. Ludlam <zappo@gnu.org>
// This file is part of GNU Emacs.
// GNU Emacs is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// GNU Emacs 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
// Thanks Ming-Wei Chang for these examples.
namespace std {
template <T>class basic_string {
public:
void resize(int);
};
}
typedef std::basic_string<char> mstring;
using namespace std;
typedef basic_string<char> bstring;
int main(){
mstring a;
a.// -1-
;
// #1# ( "resize" )
bstring b;
// It doesn't work here.
b.// -2-
;
// #2# ( "resize" )
return 0;
}
// ------------------
class Bar
{
public:
void someFunc() {}
};
typedef Bar new_Bar;
template <class mytype>
class TBar
{
public:
void otherFunc() {}
};
typedef TBar<char> new_TBar;
int main()
{
new_Bar nb;
new_TBar ntb;
nb.// -3-
;
// #3# ("someFunc")
ntb.// -4-
;
// #4# ("otherFunc")
return 0;
}
// ------------------
// Example from Yupeng.
typedef struct epd_info {
int a;
} epd_info_t;
static int epd_probe(struct platform_device *pdev)
{
struct epd_info *db;
epd_info_t db1;
db.// -5-
; // #5# ("a")
db1.// -6-
;// #6# ("a")
return 1;
}
// ------------------
// Example from Michel LAFON-PUYO
typedef enum
{
ENUM1,
ENUM2
} e_toto;
typedef struct
{
int field_a;
int field_b;
} t_toto;
// Note: Error condition from anonymous types in a typedef
// was that the first (ie - the enum) would be used in
// place of the struct.
int func(void)
{
t_toto t;
t. // -7-
; // #7# ( "field_a" "field_b" )
return 0;
}
// ------------------
// Example from Dixon Ryan
namespace NS2 {
class MyClass {
public:
void myFunction() { }
};
}
typedef class NS2::MyClass* MyClassHandle;
int dixon ( void ) {
MyClassHandle mch = getMyClassHandle();
NS2::MyClass* mcptr = getMyClassHandle();
mcptr-> // -8-
; // #8# ( "myFunction" )
mch-> // - 9- TODO bring over patch from SF
; // #9# ( "myFunction" )
deleteMyClassHandle(mch);
return 0;
}
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