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Unified pc and err of mrb_callinfo

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This enhances self-containment.

- Changed the `mrb_callinfo::pc` field to point to itself.
  Previously it indicated the return destination of the previous call level.
  `mrb_callinfo::pc` will now hold the address to its own `proc->body.irep->iseq`.
- Removed `mrb_callinfo::err` field.
  This is because `mrb_callinfo::pc - 1` is semantically the same as the previous `err`.
- The `pc0` and `pc_save` variables in `mrb_vm_exec()` are no longer needed and have been deleted.
- It removes the argument because `cipush()` doesn't need to save the previous `pc`.
This commit is contained in:
dearblue
2021-01-10 10:50:22 +09:00
parent 16baea0677
commit ced89c25ff
5 changed files with 45 additions and 61 deletions
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include/mruby/proc.h
+7
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@@ -136,6 +136,13 @@ MRB_API mrb_value mrb_proc_cfunc_env_get(mrb_state *mrb, mrb_int idx);
MRB_API mrb_value mrb_load_proc(mrb_state *mrb, const struct RProc *proc);
static inline void
mrb_vm_ci_proc_set(mrb_callinfo *ci, const struct RProc *p)
{
ci->proc = p;
ci->pc = (p && !MRB_PROC_CFUNC_P(p)) ? p->body.irep->iseq : NULL;
}
static inline struct RClass *
mrb_vm_ci_target_class(const mrb_callinfo *ci)
{