Implement proper exception type hierarchy.

Each built-in exception is now a type, with base type BaseException.
C exceptions are created by passing a pointer to the exception type to
make an instance of.  When raising an exception from the VM, an
instance is created automatically if an exception type is raised (as
opposed to an exception instance).

Exception matching (RT_BINARY_OP_EXCEPTION_MATCH) is now proper.

Handling of parse error changed to match new exceptions.

mp_const_type renamed to mp_type_type for consistency.

1 files changed, 5 insertions, 5 deletions

diff --git a/py/objset.c b/py/objset.c
index 580b9de8e6..aea107fc1c 100644
--- a/py/objset.c
+++ b/py/objset.c
@@ -67,12 +67,12 @@ STATIC mp_obj_t set_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_
         }
 
         default:
-            nlr_jump(mp_obj_new_exception_msg_varg(MP_QSTR_TypeError, "set takes at most 1 argument, %d given", n_args));
+            nlr_jump(mp_obj_new_exception_msg_varg(&mp_type_TypeError, "set takes at most 1 argument, %d given", n_args));
     }
 }
 
 const mp_obj_type_t set_it_type = {
-    { &mp_const_type },
+    { &mp_type_type },
     .name = MP_QSTR_iterator,
     .iternext = set_it_iternext,
 };
@@ -310,7 +310,7 @@ STATIC mp_obj_t set_pop(mp_obj_t self_in) {
     mp_obj_set_t *self = self_in;
 
     if (self->set.used == 0) {
-        nlr_jump(mp_obj_new_exception_msg(MP_QSTR_KeyError, "pop from an empty set"));
+        nlr_jump(mp_obj_new_exception_msg(&mp_type_KeyError, "pop from an empty set"));
     }
     mp_obj_t obj = mp_set_lookup(&self->set, NULL,
                          MP_MAP_LOOKUP_REMOVE_IF_FOUND | MP_MAP_LOOKUP_FIRST);
@@ -322,7 +322,7 @@ STATIC mp_obj_t set_remove(mp_obj_t self_in, mp_obj_t item) {
     assert(MP_OBJ_IS_TYPE(self_in, &set_type));
     mp_obj_set_t *self = self_in;
     if (mp_set_lookup(&self->set, item, MP_MAP_LOOKUP_REMOVE_IF_FOUND) == MP_OBJ_NULL) {
-        nlr_jump(mp_obj_new_exception(MP_QSTR_KeyError));
+        nlr_jump(mp_obj_new_exception(&mp_type_KeyError));
     }
     return mp_const_none;
 }
@@ -446,7 +446,7 @@ STATIC const mp_method_t set_type_methods[] = {
 };
 
 const mp_obj_type_t set_type = {
-    { &mp_const_type },
+    { &mp_type_type },
     .name = MP_QSTR_set,
     .print = set_print,
     .make_new = set_make_new,