py: Add support for _ in REPL to hold last computed value.

dpgeorge · dpgeorge · commit 035a0a2b6e5e · 2015-10-17T12:55:25.000+01:00
Only available when MICROPY_CAN_OVERRIDE_BUILTINS is enabled.
diff --git a/py/modbuiltins.c b/py/modbuiltins.c
@@ -416,6 +416,10 @@ STATIC mp_obj_t mp_builtin___repl_print__(mp_obj_t o) {
         mp_obj_print_helper(&mp_plat_print, o, PRINT_REPR);
         mp_print_str(&mp_plat_print, "\n");
         #endif
+        #if MICROPY_CAN_OVERRIDE_BUILTINS
+        mp_obj_t dest[2] = {MP_OBJ_SENTINEL, o};
+        mp_type_module.attr((mp_obj_t)&mp_module_builtins, MP_QSTR__, dest);
+        #endif
     }
     return mp_const_none;
 }
diff --git a/py/qstrdefs.h b/py/qstrdefs.h
@@ -35,6 +35,7 @@ QCFG(BYTES_IN_HASH, MICROPY_QSTR_BYTES_IN_HASH)
 
 Q()
 Q(*)
+Q(_)
 Q(__build_class__)
 Q(__class__)
 Q(__doc__)

Original file line number	Diff line number	Diff line change
`@@ -416,6 +416,10 @@ STATIC mp_obj_t mp_builtin___repl_print__(mp_obj_t o) {`
`416`	`416`	`mp_obj_print_helper(&mp_plat_print, o, PRINT_REPR);`
`417`	`417`	`mp_print_str(&mp_plat_print, "\n");`
`418`	`418`	`#endif`
	`419`	`+ #if MICROPY_CAN_OVERRIDE_BUILTINS`
	`420`	`+ mp_obj_t dest[2] = {MP_OBJ_SENTINEL, o};`
	`421`	`+ mp_type_module.attr((mp_obj_t)&mp_module_builtins, MP_QSTR__, dest);`
	`422`	`+ #endif`
`419`	`423`	`}`
`420`	`424`	`return mp_const_none;`
`421`	`425`	`}`