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 126 127 EVAL(REPEAT(DEFINITIONS)) 128 129 Component<Required<EVAL(REPEAT(REQUIREMENTS)) int>> getComponent(EVAL(REPEAT(PARAMETERS)) int) { 130 return createComponent() EVAL(REPEAT(BINDINGS)); 131 } 132
