py: Allow to properly disable builtin "set" object.

This patch makes MICROPY_PY_BUILTINS_SET compile-time option fully
disable the builtin set object (when set to 0).  This includes removing
set constructor/comprehension from the grammar, the compiler and the
emitters.  Now, enabling set costs 8168 bytes on unix x64, and 3576
bytes on stmhal.

1 files changed, 2 insertions, 0 deletions

diff --git a/py/emit.h b/py/emit.h
index 8b9b368c2f..bc72b3cb3b 100644
--- a/py/emit.h
+++ b/py/emit.h
@@ -128,8 +128,10 @@ typedef struct _emit_method_table_t {
     void (*build_map)(emit_t *emit, mp_uint_t n_args);
     void (*store_map)(emit_t *emit);
     void (*map_add)(emit_t *emit, mp_uint_t map_stack_index);
+    #if MICROPY_PY_BUILTINS_SET
     void (*build_set)(emit_t *emit, mp_uint_t n_args);
     void (*set_add)(emit_t *emit, mp_uint_t set_stack_index);
+    #endif
     void (*build_slice)(emit_t *emit, mp_uint_t n_args);
     void (*unpack_sequence)(emit_t *emit, mp_uint_t n_args);
     void (*unpack_ex)(emit_t *emit, mp_uint_t n_left, mp_uint_t n_right);