[331] | 1 | #include <mruby.h>
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| 2 | #include <mruby/throw.h>
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| 3 | #include <mruby/error.h>
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[270] | 4 |
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| 5 | MRB_API mrb_value
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| 6 | mrb_protect(mrb_state *mrb, mrb_func_t body, mrb_value data, mrb_bool *state)
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| 7 | {
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| 8 | struct mrb_jmpbuf *prev_jmp = mrb->jmp;
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| 9 | struct mrb_jmpbuf c_jmp;
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| 10 | mrb_value result = mrb_nil_value();
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[439] | 11 | int ai = mrb_gc_arena_save(mrb);
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[270] | 12 |
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| 13 | if (state) { *state = FALSE; }
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| 14 |
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| 15 | MRB_TRY(&c_jmp) {
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| 16 | mrb->jmp = &c_jmp;
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| 17 | result = body(mrb, data);
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| 18 | mrb->jmp = prev_jmp;
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| 19 | } MRB_CATCH(&c_jmp) {
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| 20 | mrb->jmp = prev_jmp;
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| 21 | result = mrb_obj_value(mrb->exc);
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| 22 | mrb->exc = NULL;
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| 23 | if (state) { *state = TRUE; }
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| 24 | } MRB_END_EXC(&c_jmp);
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| 25 |
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[439] | 26 | mrb_gc_arena_restore(mrb, ai);
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[270] | 27 | mrb_gc_protect(mrb, result);
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| 28 | return result;
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| 29 | }
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| 30 |
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| 31 | MRB_API mrb_value
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| 32 | mrb_ensure(mrb_state *mrb, mrb_func_t body, mrb_value b_data, mrb_func_t ensure, mrb_value e_data)
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| 33 | {
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| 34 | struct mrb_jmpbuf *prev_jmp = mrb->jmp;
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| 35 | struct mrb_jmpbuf c_jmp;
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| 36 | mrb_value result;
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[439] | 37 | int ai = mrb_gc_arena_save(mrb);
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[270] | 38 |
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| 39 | MRB_TRY(&c_jmp) {
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| 40 | mrb->jmp = &c_jmp;
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| 41 | result = body(mrb, b_data);
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| 42 | mrb->jmp = prev_jmp;
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| 43 | } MRB_CATCH(&c_jmp) {
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| 44 | mrb->jmp = prev_jmp;
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[439] | 45 | mrb_gc_arena_restore(mrb, ai);
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[270] | 46 | ensure(mrb, e_data);
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| 47 | MRB_THROW(mrb->jmp); /* rethrow catched exceptions */
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| 48 | } MRB_END_EXC(&c_jmp);
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| 49 |
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[439] | 50 | mrb_gc_arena_restore(mrb, ai);
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| 51 | mrb_gc_protect(mrb, result);
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[270] | 52 | ensure(mrb, e_data);
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[439] | 53 | mrb_gc_arena_restore(mrb, ai);
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[270] | 54 | mrb_gc_protect(mrb, result);
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| 55 | return result;
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| 56 | }
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| 57 |
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| 58 | MRB_API mrb_value
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| 59 | mrb_rescue(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
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| 60 | mrb_func_t rescue, mrb_value r_data)
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| 61 | {
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| 62 | return mrb_rescue_exceptions(mrb, body, b_data, rescue, r_data, 1, &mrb->eStandardError_class);
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| 63 | }
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| 64 |
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| 65 | MRB_API mrb_value
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| 66 | mrb_rescue_exceptions(mrb_state *mrb, mrb_func_t body, mrb_value b_data, mrb_func_t rescue, mrb_value r_data,
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| 67 | mrb_int len, struct RClass **classes)
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| 68 | {
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| 69 | struct mrb_jmpbuf *prev_jmp = mrb->jmp;
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| 70 | struct mrb_jmpbuf c_jmp;
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| 71 | mrb_value result;
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| 72 | mrb_bool error_matched = FALSE;
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| 73 | mrb_int i;
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[439] | 74 | int ai = mrb_gc_arena_save(mrb);
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[270] | 75 |
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| 76 | MRB_TRY(&c_jmp) {
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| 77 | mrb->jmp = &c_jmp;
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| 78 | result = body(mrb, b_data);
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| 79 | mrb->jmp = prev_jmp;
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| 80 | } MRB_CATCH(&c_jmp) {
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| 81 | mrb->jmp = prev_jmp;
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| 82 |
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| 83 | for (i = 0; i < len; ++i) {
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| 84 | if (mrb_obj_is_kind_of(mrb, mrb_obj_value(mrb->exc), classes[i])) {
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| 85 | error_matched = TRUE;
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| 86 | break;
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| 87 | }
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| 88 | }
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| 89 |
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| 90 | if (!error_matched) { MRB_THROW(mrb->jmp); }
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| 91 |
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| 92 | mrb->exc = NULL;
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[439] | 93 | mrb_gc_arena_restore(mrb, ai);
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[270] | 94 | result = rescue(mrb, r_data);
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| 95 | } MRB_END_EXC(&c_jmp);
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| 96 |
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[439] | 97 | mrb_gc_arena_restore(mrb, ai);
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[270] | 98 | mrb_gc_protect(mrb, result);
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| 99 | return result;
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| 100 | }
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| 101 |
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| 102 | void
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| 103 | mrb_mruby_error_gem_init(mrb_state *mrb)
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| 104 | {
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| 105 | }
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| 106 |
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| 107 | void
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| 108 | mrb_mruby_error_gem_final(mrb_state *mrb)
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| 109 | {
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| 110 | }
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