1 /*
2 * Copyright 2014 Google Inc. All rights reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <fruit/fruit.h>
18
19 #if MULTIPLIER == 1
20 #define REPEAT(X) REPEAT_1(X, _)
21
22 #elif MULTIPLIER == 2
23 #define REPEAT(X) REPEAT_2(X, _)
24
25 #elif MULTIPLIER == 4
26 #define REPEAT(X) REPEAT_4(X, _)
27
28 #elif MULTIPLIER == 8
29 #define REPEAT(X) REPEAT_8(X, _)
30
31 #elif MULTIPLIER == 16
32 #define REPEAT(X) REPEAT_16(X, _)
33
34 #elif MULTIPLIER == 32
35 #define REPEAT(X) REPEAT_32(X, _)
36
37 #elif MULTIPLIER == 64
38 #define REPEAT(X) REPEAT_64(X, _)
39
40 #elif MULTIPLIER == 128
41 #define REPEAT(X) REPEAT_128(X, _)
42
43 #elif MULTIPLIER == 256
44 #define REPEAT(X) REPEAT_256(X, _)
45
46 #elif MULTIPLIER == 512
47 #define REPEAT(X) REPEAT_512(X, _)
48
49 #elif MULTIPLIER == 1024
50 #define REPEAT(X) REPEAT_1024(X, _)
51
52 #else
53 #error Multiplier not supported.
54 #endif
55
56 #define PLACEHOLDER
57
58 #define EVAL0(...) __VA_ARGS__
59 #define EVAL1(...) EVAL0(EVAL0(EVAL0(EVAL0(__VA_ARGS__))))
60 #define EVAL2(...) EVAL1(EVAL1(EVAL1(EVAL1(__VA_ARGS__))))
61 #define EVAL(...) EVAL2(EVAL2(EVAL2(EVAL2(__VA_ARGS__))))
62
63 #define META_REPEAT_2(R, X, I) R PLACEHOLDER(X, I##0) R PLACEHOLDER(X, I##1)
64
65 #define REPEAT_1(X, I) X(I)
66
67 #define REPEAT_2(X, I) META_REPEAT_2(REPEAT_1, X, I)
68
69 #define REPEAT_4(X, I) META_REPEAT_2(REPEAT_2, X, I)
70
71 #define REPEAT_8(X, I) META_REPEAT_2(REPEAT_4, X, I)
72
73 #define REPEAT_16(X, I) META_REPEAT_2(REPEAT_8, X, I)
74
75 #define REPEAT_32(X, I) META_REPEAT_2(REPEAT_16, X, I)
76
77 #define REPEAT_64(X, I) META_REPEAT_2(REPEAT_32, X, I)
78
79 #define REPEAT_128(X, I) META_REPEAT_2(REPEAT_64, X, I)
80
81 #define REPEAT_256(X, I) META_REPEAT_2(REPEAT_128, X, I)
82
83 #define REPEAT_512(X, I) META_REPEAT_2(REPEAT_256, X, I)
84
85 #define REPEAT_1024(X, I) META_REPEAT_2(REPEAT_512, X, I)
86
87 using namespace fruit;
88
89 #define DEFINITIONS(N) \
90 struct A##N { \
91 INJECT(A##N()) = default; \
92 }; \
93 \
94 struct B##N {}; \
95 \
96 struct C##N {}; \
97 \
98 struct I##N { \
99 virtual void f() = 0; \
100 }; \
101 \
102 struct X##N : public I##N { \
103 INJECT(X##N(A##N, B##N*, const C##N&)){}; \
104 \
105 virtual void f(); \
106 }; \
107 \
108 struct Y##N {}; \
109 \
110 struct Z##N {}; \
111 \
112 Component<Required<Y##N>, Z##N> getZ##N##Component();
113
114 #define REQUIREMENTS(N) C##N,
115
116 #define PARAMETERS(N) B##N &b##N,
117
118 #if USE_FRUIT_2_X_SYNTAX
119 #define BINDINGS(N) \
120 .bind<I##N, X##N>().bindInstance(b##N).install(getZ##N##Component()).registerProvider([]() { return Y##N(); })
121 #else
122
123 #define BINDINGS(N) \
124 .bind<I##N, X##N>().bindInstance(b##N).install(getZ##N##Component).registerProvider([]() { return Y##N(); })
125 #endif
126
EVAL(REPEAT (DEFINITIONS))127 EVAL(REPEAT(DEFINITIONS))
128
129 Component<Required<EVAL(REPEAT(REQUIREMENTS)) int>> getComponent(EVAL(REPEAT(PARAMETERS)) int) {
130 return createComponent() EVAL(REPEAT(BINDINGS));
131 }
132