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lib/utils/pyexec: Allow behaviour of SystemExit to be configurable. 

Setting the pyexec_system_exit variable to PYEXEC_FORCED_EXT allows
SystemExit exceptions to terminate the pyexec functions.
This commit is contained in:
Damien George 2016-10-17 13:14:59 +11:00
parent 7d0d7215d2
commit ad3724e0bc
2 changed files with 10 additions and 1 deletions
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6
lib/utils/pyexec.c
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@ -45,6 +45,7 @@
#include "genhdr/mpversion.h" #include "genhdr/mpversion.h"
pyexec_mode_kind_t pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL; pyexec_mode_kind_t pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
int pyexec_system_exit = 0;
STATIC bool repl_display_debugging_info = 0; STATIC bool repl_display_debugging_info = 0;
#define EXEC_FLAG_PRINT_EOF (1) #define EXEC_FLAG_PRINT_EOF (1)
@ -61,6 +62,9 @@ STATIC int parse_compile_execute(void *source, mp_parse_input_kind_t input_kind,
int ret = 0; int ret = 0;
uint32_t start = 0; uint32_t start = 0;
// by default a SystemExit exception returns 0
pyexec_system_exit = 0;
nlr_buf_t nlr; nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) { if (nlr_push(&nlr) == 0) {
mp_obj_t module_fun; mp_obj_t module_fun;
@ -99,7 +103,7 @@ STATIC int parse_compile_execute(void *source, mp_parse_input_kind_t input_kind,
// check for SystemExit // check for SystemExit
if (mp_obj_is_subclass_fast(mp_obj_get_type((mp_obj_t)nlr.ret_val), &mp_type_SystemExit)) { if (mp_obj_is_subclass_fast(mp_obj_get_type((mp_obj_t)nlr.ret_val), &mp_type_SystemExit)) {
// at the moment, the value of SystemExit is unused // at the moment, the value of SystemExit is unused
ret = 0; ret = pyexec_system_exit;
} else { } else {
mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val); mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
ret = 0; ret = 0;

5
lib/utils/pyexec.h
View File

@ -33,6 +33,11 @@ typedef enum {
extern pyexec_mode_kind_t pyexec_mode_kind; extern pyexec_mode_kind_t pyexec_mode_kind;
// Set this to the value (eg PYEXEC_FORCED_EXIT) that will be propagated through
// the pyexec functions if a SystemExit exception is raised by the running code.
// It will reset to 0 at the start of each execution (eg each REPL entry).
extern int pyexec_system_exit;
#define PYEXEC_FORCED_EXIT (0x100) #define PYEXEC_FORCED_EXIT (0x100)
#define PYEXEC_SWITCH_MODE (0x200) #define PYEXEC_SWITCH_MODE (0x200)