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lib/utils/pyexec: Implement paste mode with event driven REPL.

This commit is contained in:
Damien George 2019-01-21 13:42:06 +11:00
parent 38022ddb2c
commit 1fa8f977f5
1 changed files with 36 additions and 0 deletions
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36
lib/utils/pyexec.c
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@ -160,6 +160,7 @@ typedef struct _repl_t {
// will be added later.
//vstr_t line;
bool cont_line;
bool paste_mode;
} repl_t;
repl_t repl;
@ -170,6 +171,7 @@ STATIC int pyexec_friendly_repl_process_char(int c);
void pyexec_event_repl_init(void) {
MP_STATE_VM(repl_line) = vstr_new(32);
repl.cont_line = false;
repl.paste_mode = false;
// no prompt before printing friendly REPL banner or entering raw REPL
readline_init(MP_STATE_VM(repl_line), "");
if (pyexec_mode_kind == PYEXEC_MODE_RAW_REPL) {
@ -189,6 +191,7 @@ STATIC int pyexec_raw_repl_process_char(int c) {
pyexec_mode_kind = PYEXEC_MODE_FRIENDLY_REPL;
vstr_reset(MP_STATE_VM(repl_line));
repl.cont_line = false;
repl.paste_mode = false;
pyexec_friendly_repl_process_char(CHAR_CTRL_B);
return 0;
} else if (c == CHAR_CTRL_C) {
@ -226,6 +229,32 @@ reset:
}
STATIC int pyexec_friendly_repl_process_char(int c) {
if (repl.paste_mode) {
if (c == CHAR_CTRL_C) {
// cancel everything
mp_hal_stdout_tx_str("\r\n");
goto input_restart;
} else if (c == CHAR_CTRL_D) {
// end of input
mp_hal_stdout_tx_str("\r\n");
int ret = parse_compile_execute(MP_STATE_VM(repl_line), MP_PARSE_FILE_INPUT, EXEC_FLAG_ALLOW_DEBUGGING | EXEC_FLAG_IS_REPL | EXEC_FLAG_SOURCE_IS_VSTR);
if (ret & PYEXEC_FORCED_EXIT) {
return ret;
}
goto input_restart;
} else {
// add char to buffer and echo
vstr_add_byte(MP_STATE_VM(repl_line), c);
if (c == '\r') {
mp_hal_stdout_tx_str("\r\n=== ");
} else {
char buf[1] = {c};
mp_hal_stdout_tx_strn(buf, 1);
}
return 0;
}
}
int ret = readline_process_char(c);
if (!repl.cont_line) {
@ -253,6 +282,12 @@ STATIC int pyexec_friendly_repl_process_char(int c) {
mp_hal_stdout_tx_str("\r\n");
vstr_clear(MP_STATE_VM(repl_line));
return PYEXEC_FORCED_EXIT;
} else if (ret == CHAR_CTRL_E) {
// paste mode
mp_hal_stdout_tx_str("\r\npaste mode; Ctrl-C to cancel, Ctrl-D to finish\r\n=== ");
vstr_reset(MP_STATE_VM(repl_line));
repl.paste_mode = true;
return 0;
}
if (ret < 0) {
@ -299,6 +334,7 @@ exec: ;
input_restart:
vstr_reset(MP_STATE_VM(repl_line));
repl.cont_line = false;
repl.paste_mode = false;
readline_init(MP_STATE_VM(repl_line), ">>> ");
return 0;
}