py: Make viper codegen raise proper exception (ViperTypeError) on error.

This fixes a long standing problem that viper code generation gave
terrible error messages, and actually no errors on pyboard where
assertions are disabled.

Now all compile-time errors are raised as proper Python exceptions, and
are of type ViperTypeError.

Addresses issue #940.

1 files changed, 4 insertions, 4 deletions

diff --git a/py/emit.h b/py/emit.h
index 268c9d66ca..35ba08db9e 100644
--- a/py/emit.h
+++ b/py/emit.h
@@ -172,10 +172,10 @@ extern const mp_emit_method_table_id_ops_t mp_emit_bc_method_table_delete_id_ops
 
 emit_t *emit_cpython_new(void);
 emit_t *emit_bc_new(void);
-emit_t *emit_native_x64_new(mp_uint_t max_num_labels);
-emit_t *emit_native_x86_new(mp_uint_t max_num_labels);
-emit_t *emit_native_thumb_new(mp_uint_t max_num_labels);
-emit_t *emit_native_arm_new(mp_uint_t max_num_labels);
+emit_t *emit_native_x64_new(mp_obj_t *error_slot, mp_uint_t max_num_labels);
+emit_t *emit_native_x86_new(mp_obj_t *error_slot, mp_uint_t max_num_labels);
+emit_t *emit_native_thumb_new(mp_obj_t *error_slot, mp_uint_t max_num_labels);
+emit_t *emit_native_arm_new(mp_obj_t *error_slot, mp_uint_t max_num_labels);
 
 void emit_cpython_set_max_num_labels(emit_t* emit, mp_uint_t max_num_labels);
 void emit_bc_set_max_num_labels(emit_t* emit, mp_uint_t max_num_labels);