bind.h revision 72a454cd3513ac24fbdd0e0cb9ad70b86a99b801 
1// This file was GENERATED by command:
2//     pump.py bind.h.pump
3// DO NOT EDIT BY HAND!!!
4
5
6// Copyright (c) 2011 The Chromium Authors. All rights reserved.
7// Use of this source code is governed by a BSD-style license that can be
8// found in the LICENSE file.
9
10#ifndef BASE_BIND_H_
11#define BASE_BIND_H_
12#pragma once
13
14#include "base/bind_internal.h"
15#include "base/callback_helpers.h"
16
17// See base/callback.h for how to use these functions.
18//
19// IMPLEMENTATION NOTE
20// Though Bind()'s result is meant to be stored in a Callback<> type, it
21// cannot actually return the exact type without requiring a large amount
22// of extra template specializations. The problem is that in order to
23// discern the correct specialization of Callback<>, Bind would need to
24// unwrap the function signature to determine the signature's arity, and
25// whether or not it is a method.
26//
27// Each unique combination of (arity, function_type, num_prebound) where
28// function_type is one of {function, method, const_method} would require
29// one specialization.  We eventually have to do a similar number of
30// specializations anyways in the implementation (see the FunctionTraitsN,
31// classes).  However, it is avoidable in Bind if we return the result
32// via an indirection like we do below.
33
34namespace base {
35
36template <typename Sig>
37internal::InvokerStorageHolder<internal::InvokerStorage0<Sig> >
38Bind(Sig f) {
39  return internal::MakeInvokerStorageHolder(
40      new internal::InvokerStorage0<Sig>(f));
41}
42
43template <typename Sig, typename P1>
44internal::InvokerStorageHolder<internal::InvokerStorage1<Sig,P1> >
45Bind(Sig f, const P1& p1) {
46  return internal::MakeInvokerStorageHolder(
47      new internal::InvokerStorage1<Sig, P1>(
48          f, p1));
49}
50
51template <typename Sig, typename P1, typename P2>
52internal::InvokerStorageHolder<internal::InvokerStorage2<Sig,P1, P2> >
53Bind(Sig f, const P1& p1, const P2& p2) {
54  return internal::MakeInvokerStorageHolder(
55      new internal::InvokerStorage2<Sig, P1, P2>(
56          f, p1, p2));
57}
58
59template <typename Sig, typename P1, typename P2, typename P3>
60internal::InvokerStorageHolder<internal::InvokerStorage3<Sig,P1, P2, P3> >
61Bind(Sig f, const P1& p1, const P2& p2, const P3& p3) {
62  return internal::MakeInvokerStorageHolder(
63      new internal::InvokerStorage3<Sig, P1, P2, P3>(
64          f, p1, p2, p3));
65}
66
67template <typename Sig, typename P1, typename P2, typename P3, typename P4>
68internal::InvokerStorageHolder<internal::InvokerStorage4<Sig,P1, P2, P3, P4> >
69Bind(Sig f, const P1& p1, const P2& p2, const P3& p3, const P4& p4) {
70  return internal::MakeInvokerStorageHolder(
71      new internal::InvokerStorage4<Sig, P1, P2, P3, P4>(
72          f, p1, p2, p3, p4));
73}
74
75template <typename Sig, typename P1, typename P2, typename P3, typename P4,
76    typename P5>
77internal::InvokerStorageHolder<internal::InvokerStorage5<Sig,P1, P2, P3, P4,
78    P5> >
79Bind(Sig f, const P1& p1, const P2& p2, const P3& p3, const P4& p4,
80    const P5& p5) {
81  return internal::MakeInvokerStorageHolder(
82      new internal::InvokerStorage5<Sig, P1, P2, P3, P4, P5>(
83          f, p1, p2, p3, p4, p5));
84}
85
86template <typename Sig, typename P1, typename P2, typename P3, typename P4,
87    typename P5, typename P6>
88internal::InvokerStorageHolder<internal::InvokerStorage6<Sig,P1, P2, P3, P4,
89    P5, P6> >
90Bind(Sig f, const P1& p1, const P2& p2, const P3& p3, const P4& p4,
91    const P5& p5, const P6& p6) {
92  return internal::MakeInvokerStorageHolder(
93      new internal::InvokerStorage6<Sig, P1, P2, P3, P4, P5, P6>(
94          f, p1, p2, p3, p4, p5, p6));
95}
96
97}  // namespace base
98
99#endif  // BASE_BIND_H_
100