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John Bampton
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82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#include <mruby.h>
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#include <mruby/error.h>
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struct protect_data {
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mrb_func_t body;
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mrb_value data;
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};
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static mrb_value
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protect_body(mrb_state *mrb, void *p)
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{
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struct protect_data *dp = (struct protect_data*)p;
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return dp->body(mrb, dp->data);
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}
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MRB_API mrb_value
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mrb_protect(mrb_state *mrb, mrb_func_t body, mrb_value data, mrb_bool *state)
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{
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struct protect_data protect_data = { body, data };
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return mrb_protect_error(mrb, protect_body, &protect_data, state);
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}
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MRB_API mrb_value
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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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{
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int ai = mrb_gc_arena_save(mrb);
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struct protect_data protect_data = { body, b_data };
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mrb_bool error;
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mrb_value result = mrb_protect_error(mrb, protect_body, &protect_data, &error);
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ensure(mrb, e_data);
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mrb_gc_arena_restore(mrb, ai);
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mrb_gc_protect(mrb, result);
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if (error) {
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mrb_exc_raise(mrb, result); /* rethrow caught exceptions */
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}
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return result;
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}
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MRB_API mrb_value
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mrb_rescue(mrb_state *mrb, mrb_func_t body, mrb_value b_data,
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mrb_func_t rescue, mrb_value r_data)
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{
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return mrb_rescue_exceptions(mrb, body, b_data, rescue, r_data, 1, &mrb->eStandardError_class);
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}
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MRB_API mrb_value
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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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mrb_int len, struct RClass **classes)
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{
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int ai = mrb_gc_arena_save(mrb);
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struct protect_data protect_data = { body, b_data };
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mrb_bool error;
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mrb_value result = mrb_protect_error(mrb, protect_body, &protect_data, &error);
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if (error) {
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mrb_bool error_matched = FALSE;
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for (mrb_int i = 0; i < len; ++i) {
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if (mrb_obj_is_kind_of(mrb, result, classes[i])) {
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error_matched = TRUE;
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break;
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}
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}
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if (!error_matched) { mrb_exc_raise(mrb, result); }
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mrb->exc = NULL;
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result = rescue(mrb, r_data);
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mrb_gc_arena_restore(mrb, ai);
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mrb_gc_protect(mrb, result);
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}
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return result;
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}
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void
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mrb_mruby_error_gem_init(mrb_state *mrb)
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{
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}
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void
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mrb_mruby_error_gem_final(mrb_state *mrb)
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{
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}
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