[35dd0f42] | 1 | #include "exception.h" |
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| 2 | |
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[e4e9173] | 3 | // Use: gcc -fexceptions -Wall -Werror -g exception.c test-main.c |
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| 4 | |
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[35dd0f42] | 5 | #include <stdio.h> |
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[e4e9173] | 6 | #include <stdbool.h> |
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[35dd0f42] | 7 | |
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| 8 | // Translation Helpers: |
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| 9 | #define CLEANUP(function) \ |
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| 10 | struct __cleanup_hook __hidden_hook __attribute__((cleanup(function))) |
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| 11 | |
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[e4e9173] | 12 | void __try_resume_node_new(struct __try_resume_node * node, |
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| 13 | _Bool (*handler)(exception except)) { |
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| 14 | node->next = shared_stack.top_resume; |
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| 15 | shared_stack.top_resume = node; |
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| 16 | node->try_to_handle = handler; |
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| 17 | } |
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| 18 | |
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| 19 | void __try_resume_node_delete(struct __try_resume_node * node) { |
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| 20 | shared_stack.top_resume = node->next; |
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| 21 | } |
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[35dd0f42] | 22 | |
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| 23 | // Local Print On Exit: |
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| 24 | struct raii_base_type { |
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| 25 | const char * area; |
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| 26 | }; |
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| 27 | |
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| 28 | void raii_dtor(struct raii_base_type * this) { |
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| 29 | printf("Exiting: %s\n", this->area); |
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| 30 | } |
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| 31 | |
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| 32 | #define raii_t __attribute__((cleanup(raii_dtor))) struct raii_base_type |
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| 33 | |
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[e4e9173] | 34 | // =========================================================================== |
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[35dd0f42] | 35 | // Runtime code (post-translation). |
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| 36 | void terminate(int except_value) { |
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| 37 | raii_t a = {"terminate function"}; |
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| 38 | __throw_terminate(except_value); |
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| 39 | printf("terminate returned\n"); |
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| 40 | } |
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| 41 | |
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| 42 | void resume(int except_value) { |
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| 43 | raii_t a = {"resume function"}; |
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| 44 | __throw_resume(except_value); |
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| 45 | printf("resume returned\n"); |
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| 46 | } |
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| 47 | |
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| 48 | // Termination Test: Two handlers: no catch, catch |
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| 49 | void bar() { |
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[e4e9173] | 50 | raii_t a = {"bar function"}; |
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| 51 | { |
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| 52 | void bar_try1() { |
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| 53 | terminate(4); |
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[35dd0f42] | 54 | } |
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[e4e9173] | 55 | void bar_catch1(int index, exception except) { |
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| 56 | switch(except) { |
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| 57 | case 1: |
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| 58 | printf("bar caught exception 3.\n"); |
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| 59 | break; |
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| 60 | default: |
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| 61 | printf("INVALID INDEX in bar: %d (%d)\n", index, except); |
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| 62 | } |
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| 63 | } |
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| 64 | int bar_match1(exception except) { |
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| 65 | if (3 == except) { |
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| 66 | return 1; |
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| 67 | } else { |
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| 68 | return 0; |
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| 69 | } |
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[35dd0f42] | 70 | } |
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[e4e9173] | 71 | __try_terminate(bar_try1, bar_catch1, bar_match1); |
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[35dd0f42] | 72 | } |
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| 73 | } |
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| 74 | |
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| 75 | void foo() { |
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[e4e9173] | 76 | raii_t a = {"foo function"}; |
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| 77 | { |
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| 78 | void foo_try1() { |
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| 79 | bar(); |
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| 80 | } |
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| 81 | void foo_catch1(int index, exception except) { |
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| 82 | switch(index) { |
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| 83 | case 1: |
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| 84 | printf("foo caught exception 4.\n"); |
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| 85 | break; |
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| 86 | case 2: |
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| 87 | printf("foo caught exception 2.\n"); |
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| 88 | break; |
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| 89 | default: |
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| 90 | printf("INVALID INDEX in foo: %d (%d)\n", index, except); |
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| 91 | } |
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| 92 | } |
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| 93 | int foo_match1(exception except) { |
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| 94 | if (4 == except) { |
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| 95 | return 1; |
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| 96 | } else if (2 == except) { |
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| 97 | return 2; |
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| 98 | } else { |
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| 99 | return 0; |
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| 100 | } |
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| 101 | } |
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| 102 | __try_terminate(foo_try1, foo_catch1, foo_match1); |
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| 103 | } |
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| 104 | } |
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| 105 | |
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| 106 | // Resumption Two Handler Test: no catch, catch. |
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| 107 | void beta() { |
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| 108 | raii_t a = {"beta function"}; |
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| 109 | { |
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| 110 | bool beta_handle1(exception except) { |
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| 111 | if (3 == except) { |
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| 112 | printf("beta caught exception 3\n"); |
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| 113 | return true; |
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| 114 | } else { |
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| 115 | return false; |
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| 116 | } |
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| 117 | } |
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| 118 | struct __try_resume_node node |
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| 119 | __attribute__((cleanup(__try_resume_node_delete))); |
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| 120 | __try_resume_node_new(&node, beta_handle1); |
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| 121 | { |
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| 122 | resume(4); |
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| 123 | } |
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[35dd0f42] | 124 | } |
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[e4e9173] | 125 | } |
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| 126 | void alpha() { |
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| 127 | raii_t a = {"alpha function"}; |
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| 128 | { |
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| 129 | bool alpha_handle1(exception except) { |
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| 130 | if (2 == except) { |
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| 131 | printf("alpha caught exception 2\n"); |
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| 132 | return true; |
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| 133 | } else if (4 == except) { |
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| 134 | printf("alpha caught exception 4\n"); |
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| 135 | return true; |
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| 136 | } else { |
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| 137 | return false; |
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| 138 | } |
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| 139 | } |
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| 140 | struct __try_resume_node node |
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| 141 | __attribute__((cleanup(__try_resume_node_delete))); |
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| 142 | __try_resume_node_new(&node, alpha_handle1); |
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| 143 | { |
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| 144 | beta(); |
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[35dd0f42] | 145 | } |
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| 146 | } |
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[e4e9173] | 147 | } |
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| 148 | |
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| 149 | // Finally Test: |
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| 150 | void farewell() { |
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| 151 | { |
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| 152 | void farewell_finally1() { |
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| 153 | printf("See you next time\n"); |
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| 154 | } |
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| 155 | CLEANUP(farewell_finally1); |
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| 156 | { |
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| 157 | printf("jump out of farewell\n"); |
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| 158 | } |
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| 159 | } |
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| 160 | } |
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| 161 | |
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| 162 | // Resume-to-Terminate Test: |
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| 163 | void fallback() { |
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| 164 | //raii_t a = {"fallback function\n"}; |
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| 165 | { |
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| 166 | void fallback_try1() { |
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| 167 | resume(1); |
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| 168 | } |
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| 169 | void fallback_catch1(int index, exception except) { |
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| 170 | switch (index) { |
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| 171 | case 1: |
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| 172 | printf("fallback caught termination 1\n"); |
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| 173 | break; |
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| 174 | default: |
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| 175 | printf("INVALID INDEX in fallback: %d (%d)\n", index, except); |
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| 176 | } |
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| 177 | } |
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| 178 | int fallback_match1(exception except) { |
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| 179 | if (1 == except) { |
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| 180 | return 1; |
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| 181 | } else { |
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| 182 | return 0; |
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| 183 | } |
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[35dd0f42] | 184 | } |
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[e4e9173] | 185 | __try_terminate(fallback_try1, fallback_catch1, fallback_match1); |
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[35dd0f42] | 186 | } |
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| 187 | } |
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| 188 | |
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[e4e9173] | 189 | // main: choose which tests to run |
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[35dd0f42] | 190 | int main(int argc, char * argv[]) { |
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| 191 | raii_t a = {"main function"}; |
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| 192 | |
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[e4e9173] | 193 | foo(); printf("\n"); |
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| 194 | alpha(); printf("\n"); |
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| 195 | farewell(); printf("\n"); |
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| 196 | fallback(); printf("\n"); |
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| 197 | // Uncaught termination test. |
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| 198 | terminate(7); |
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[35dd0f42] | 199 | } |
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