Cleanup: remove bmesh-operator error code

The error codes could be used to look up messages from a table
of messages however this wasn't especially useful.

Now all calls to BMO_error_raise must inclue a message.

source/blender/bmesh/intern/bmesh_error.h

@@ -26,43 +26,27 @@
 
 /* Pushes an error onto the bmesh error stack.
  * if msg is null, then the default message for the `errcode` is used. */
-void BMO_error_raise(BMesh *bm, BMOperator *owner, int errcode, const char *msg);
+void BMO_error_raise(BMesh *bm, BMOperator *owner, const char *msg) ATTR_NONNULL(1, 2, 3);
 
 /* Gets the topmost error from the stack.
  * returns error code or 0 if no error. */
-int BMO_error_get(BMesh *bm, const char **msg, BMOperator **op);
+bool BMO_error_get(BMesh *bm, const char **r_msg, BMOperator **r_op);
 bool BMO_error_occurred(BMesh *bm);
 
 /* Same as #BMO_error_get, only pops the error off the stack as well. */
-int BMO_error_pop(BMesh *bm, const char **msg, BMOperator **op);
+bool BMO_error_pop(BMesh *bm, const char **r_msg, BMOperator **r_op);
 void BMO_error_clear(BMesh *bm);
 
 /* This is meant for handling errors, like self-intersection test failures.
  * it's dangerous to handle errors in general though, so disabled for now. */
 
-/* Catches an error raised by the op pointed to by catchop.
- * errorcode is either the errorcode, or BMERR_ALL for any
- * error. */
-
+/* Catches an error raised by the op pointed to by catchop. */
 /* Not yet implemented. */
-// int BMO_error_catch_op(BMesh *bm, BMOperator *catchop, int errorcode, char **msg);
+// int BMO_error_catch_op(BMesh *bm, BMOperator *catchop, char **msg);
 
 #define BM_ELEM_INDEX_VALIDATE(_bm, _msg_a, _msg_b) \
   BM_mesh_elem_index_validate(_bm, __FILE__ ":" STRINGIFY(__LINE__), __func__, _msg_a, _msg_b)
 
-/*------ error code defines -------*/
-
-/** Error messages. */
-enum {
-  BMERR_CONNECTVERT_FAILED = 1,
-  BMERR_DISSOLVEFACES_FAILED,
-  BMERR_INVALID_SELECTION,
-  BMERR_MESH_ERROR,
-  BMERR_CONVEX_HULL_FAILED,
-
-  BMERR_TOTAL,
-};
-
 /* BMESH_ASSERT */
 #ifdef WITH_ASSERT_ABORT
 #  define _BMESH_DUMMY_ABORT abort

source/blender/bmesh/intern/bmesh_operators.c

@@ -42,17 +42,6 @@ static int bmo_name_to_slotcode(BMOpSlot slot_args[BMO_OP_MAX_SLOTS], const char
 static int bmo_name_to_slotcode_check(BMOpSlot slot_args[BMO_OP_MAX_SLOTS],
                                       const char *identifier);
 
-static const char *bmo_error_messages[] = {
-    NULL,
-    N_("Could not connect vertices"),
-    N_("Could not dissolve faces"),
-    N_("Invalid selection"),
-    N_("Internal mesh error"),
-    N_("Convex hull failed"),
-};
-
-BLI_STATIC_ASSERT(ARRAY_SIZE(bmo_error_messages) == BMERR_TOTAL, "message mismatch");
-
 /* operator slot type information - size of one element of the type given. */
 const int BMO_OPSLOT_TYPEINFO[BMO_OP_SLOT_TOTAL_TYPES] = {
     0,                /*  0: BMO_OP_SLOT_SENTINEL */
@@ -1562,7 +1551,6 @@ bool BMO_iter_map_value_bool(BMOIter *iter)
 /* error system */
 typedef struct BMOpError {
   struct BMOpError *next, *prev;
-  int errorcode;
   BMOperator *op;
   const char *msg;
 } BMOpError;
@@ -1574,14 +1562,10 @@ void BMO_error_clear(BMesh *bm)
   }
 }
 
-void BMO_error_raise(BMesh *bm, BMOperator *owner, int errcode, const char *msg)
+void BMO_error_raise(BMesh *bm, BMOperator *owner, const char *msg)
 {
   BMOpError *err = MEM_callocN(sizeof(BMOpError), "bmop_error");
 
-  err->errorcode = errcode;
-  if (!msg) {
-    msg = bmo_error_messages[errcode];
-  }
   err->msg = msg;
   err->op = owner;
 
@@ -1594,35 +1578,35 @@ bool BMO_error_occurred(BMesh *bm)
 }
 
 /* returns error code or 0 if no error */
-int BMO_error_get(BMesh *bm, const char **msg, BMOperator **op)
+bool BMO_error_get(BMesh *bm, const char **r_msg, BMOperator **r_op)
 {
   BMOpError *err = bm->errorstack.first;
-  if (!err) {
-    return 0;
+  if (err == NULL) {
+    return false;
   }
 
-  if (msg) {
-    *msg = err->msg;
+  if (r_msg) {
+    *r_msg = err->msg;
   }
-  if (op) {
-    *op = err->op;
+  if (r_op) {
+    *r_op = err->op;
   }
 
-  return err->errorcode;
+  return true;
 }
 
-int BMO_error_pop(BMesh *bm, const char **msg, BMOperator **op)
+bool BMO_error_pop(BMesh *bm, const char **msg, BMOperator **op)
 {
-  int errorcode = BMO_error_get(bm, msg, op);
+  bool result = BMO_error_get(bm, msg, op);
 
-  if (errorcode) {
+  if (result) {
     BMOpError *err = bm->errorstack.first;
 
     BLI_remlink(&bm->errorstack, bm->errorstack.first);
     MEM_freeN(err);
   }
 
-  return errorcode;
+  return result;
 }
 
 #define NEXT_CHAR(fmt) ((fmt)[0] != 0 ? (fmt)[1] : 0)

source/blender/bmesh/operators/bmo_bisect_plane.c

@@ -50,7 +50,7 @@ void bmo_bisect_plane_exec(BMesh *bm, BMOperator *op)
   BMO_slot_vec_get(op->slots_in, "plane_no", plane_no);
 
   if (is_zero_v3(plane_no)) {
-    BMO_error_raise(bm, op, BMERR_MESH_ERROR, "Zero normal given");
+    BMO_error_raise(bm, op, "Zero normal given");
     return;
   }
 

source/blender/bmesh/operators/bmo_bridge.c

@@ -576,13 +576,12 @@ void bmo_bridge_loops_exec(BMesh *bm, BMOperator *op)
   BM_mesh_edgeloops_calc_center(bm, &eloops);
 
   if (count < 2) {
-    BMO_error_raise(bm, op, BMERR_INVALID_SELECTION, "Select at least two edge loops");
+    BMO_error_raise(bm, op, "Select at least two edge loops");
     goto cleanup;
   }
 
   if (use_pairs && (count % 2)) {
-    BMO_error_raise(
-        bm, op, BMERR_INVALID_SELECTION, "Select an even number of loops to bridge pairs");
+    BMO_error_raise(bm, op, "Select an even number of loops to bridge pairs");
     goto cleanup;
   }
 
@@ -596,8 +595,7 @@ void bmo_bridge_loops_exec(BMesh *bm, BMOperator *op)
       }
     }
     if (!match) {
-      BMO_error_raise(
-          bm, op, BMERR_INVALID_SELECTION, "Selected loops must have equal edge counts");
+      BMO_error_raise(bm, op, "Selected loops must have equal edge counts");
       goto cleanup;
     }
   }

source/blender/bmesh/operators/bmo_connect.c

@@ -211,7 +211,7 @@ void bmo_connect_verts_exec(BMesh *bm, BMOperator *op)
   /* connect faces */
   while ((f = BLI_LINKSTACK_POP(faces))) {
     if (bm_face_connect_verts(bm, f, check_degenerate) == -1) {
-      BMO_error_raise(bm, op, BMERR_CONNECTVERT_FAILED, NULL);
+      BMO_error_raise(bm, op, "Could not connect vertices");
     }
   }
 

source/blender/bmesh/operators/bmo_dissolve.c

@@ -184,7 +184,7 @@ void bmo_dissolve_faces_exec(BMesh *bm, BMOperator *op)
 
     if (BMO_error_occurred(bm)) {
       BMO_error_clear(bm);
-      BMO_error_raise(bm, op, BMERR_DISSOLVEFACES_FAILED, NULL);
+      BMO_error_raise(bm, op, "Could not dissolve faces");
       goto cleanup;
     }
 
@@ -201,8 +201,7 @@ void bmo_dissolve_faces_exec(BMesh *bm, BMOperator *op)
 
     faces = regions[i];
     if (!faces[0]) {
-      BMO_error_raise(
-          bm, op, BMERR_DISSOLVEFACES_FAILED, "Could not find boundary of dissolve region");
+      BMO_error_raise(bm, op, "Could not find boundary of dissolve region");
       goto cleanup;
     }
 
@@ -220,7 +219,7 @@ void bmo_dissolve_faces_exec(BMesh *bm, BMOperator *op)
       totface_target -= tot - 1;
     }
     else {
-      BMO_error_raise(bm, op, BMERR_DISSOLVEFACES_FAILED, "Could not create merged face");
+      BMO_error_raise(bm, op, "Could not create merged face");
       goto cleanup;
     }
 

source/blender/bmesh/operators/bmo_fill_grid.c

@@ -619,7 +619,6 @@ void bmo_grid_fill_exec(BMesh *bm, BMOperator *op)
      * extract two 'rail' loops from a single edge loop, see T72075. */
     BMO_error_raise(bm,
                     op,
-                    BMERR_INVALID_SELECTION,
                     "Select two edge loops "
                     "or a single closed edge loop from which two edge loops can be calculated");
     goto cleanup;
@@ -634,7 +633,7 @@ void bmo_grid_fill_exec(BMesh *bm, BMOperator *op)
   v_b_last = ((LinkData *)BM_edgeloop_verts_get(estore_b)->last)->data;
 
   if (BM_edgeloop_is_closed(estore_a) || BM_edgeloop_is_closed(estore_b)) {
-    BMO_error_raise(bm, op, BMERR_INVALID_SELECTION, "Closed loops unsupported");
+    BMO_error_raise(bm, op, "Closed loops unsupported");
     goto cleanup;
   }
 
@@ -672,8 +671,7 @@ void bmo_grid_fill_exec(BMesh *bm, BMOperator *op)
   bm_edgeloop_flag_set(estore_b, BM_ELEM_HIDDEN, false);
 
   if (BLI_listbase_is_empty(&eloops_rail)) {
-    BMO_error_raise(
-        bm, op, BMERR_INVALID_SELECTION, "Loops are not connected by wire/boundary edges");
+    BMO_error_raise(bm, op, "Loops are not connected by wire/boundary edges");
     goto cleanup;
   }
 
@@ -681,7 +679,7 @@ void bmo_grid_fill_exec(BMesh *bm, BMOperator *op)
   BLI_assert(v_a_last != v_b_last);
 
   if (BM_edgeloop_overlap_check(estore_rail_a, estore_rail_b)) {
-    BMO_error_raise(bm, op, BMERR_INVALID_SELECTION, "Connecting edge loops overlap");
+    BMO_error_raise(bm, op, "Connecting edge loops overlap");
     goto cleanup;
   }
 

source/blender/bmesh/operators/bmo_hull.c

@@ -554,7 +554,7 @@ void bmo_convex_hull_exec(BMesh *bm, BMOperator *op)
 
   /* Verify that at least three verts in the input */
   if (!hull_num_input_verts_is_ok(op)) {
-    BMO_error_raise(bm, op, BMERR_CONVEX_HULL_FAILED, "Requires at least three vertices");
+    BMO_error_raise(bm, op, "Requires at least three vertices");
     return;
   }
 

source/blender/bmesh/operators/bmo_subdivide_edgering.c

@@ -1143,7 +1143,7 @@ void bmo_subdivide_edgering_exec(BMesh *bm, BMOperator *op)
   count = BM_mesh_edgeloops_find(bm, &eloops_rim, bm_edge_rim_test_cb, (void *)bm);
 
   if (count < 2) {
-    BMO_error_raise(bm, op, BMERR_INVALID_SELECTION, "No edge rings found");
+    BMO_error_raise(bm, op, "No edge rings found");
     goto cleanup;
   }
   else if (count == 2) {
@@ -1167,7 +1167,7 @@ void bmo_subdivide_edgering_exec(BMesh *bm, BMOperator *op)
       changed = true;
     }
     else {
-      BMO_error_raise(bm, op, BMERR_INVALID_SELECTION, "Edge-ring pair isn't connected");
+      BMO_error_raise(bm, op, "Edge-ring pair isn't connected");
       goto cleanup;
     }
   }
@@ -1179,7 +1179,7 @@ void bmo_subdivide_edgering_exec(BMesh *bm, BMOperator *op)
     LoopPairStore **lpair_arr;
 
     if (eloop_pairs_gs == NULL) {
-      BMO_error_raise(bm, op, BMERR_INVALID_SELECTION, "Edge-rings are not connected");
+      BMO_error_raise(bm, op, "Edge-rings are not connected");
       goto cleanup;
     }