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#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "Arduino.h"
extern "C"
{
#include "nlr.h"
#include "misc.h"
#include "mpconfig.h"
#include "lexer.h"
#include "lexerteensy.h"
#include "parse.h"
#include "obj.h"
#include "compile.h"
#include "runtime0.h"
#include "runtime.h"
#include "repl.h"
#include "usb.h"
}
#ifdef USE_READLINE
#include <readline/readline.h>
#include <readline/history.h>
#endif
#if 0
static char *str_join(const char *s1, int sep_char, const char *s2) {
int l1 = strlen(s1);
int l2 = strlen(s2);
char *s = m_new(char, l1 + l2 + 2);
memcpy(s, s1, l1);
if (sep_char != 0) {
s[l1] = sep_char;
l1 += 1;
}
memcpy(s + l1, s2, l2);
s[l1 + l2] = 0;
return s;
}
static char *prompt(char *p) {
#ifdef USE_READLINE
char *line = readline(p);
if (line) {
add_history(line);
}
#else
static char buf[256];
fputs(p, stdout);
char *s = fgets(buf, sizeof(buf), stdin);
if (!s) {
return NULL;
}
int l = strlen(buf);
if (buf[l - 1] == '\n') {
buf[l - 1] = 0;
} else {
l++;
}
char *line = m_new(char, l);
memcpy(line, buf, l);
#endif
return line;
}
#endif
#define READLINE_HIST_SIZE (8)
static const char *readline_hist[READLINE_HIST_SIZE] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
void stdout_tx_str(const char *str) {
// usart_tx_str(str);
usb_vcp_send_str(str);
}
static elapsedMillis ledTime;
static uint8_t ledState;
int readline(vstr_t *line, const char *prompt) {
stdout_tx_str(prompt);
int len = vstr_len(line);
int escape = 0;
int hist_num = 0;
for (;;) {
char c;
ledState = 1;
ledTime = 0;
digitalWrite(LED_BUILTIN, ledState);
for (;;) {
if (ledTime > 200) {
ledState = !ledState;
digitalWrite(LED_BUILTIN, ledState);
ledTime = 0;
}
if (usb_vcp_rx_any() != 0) {
c = usb_vcp_rx_get();
break;
#if 0
} else if (usart_rx_any()) {
c = usart_rx_char();
break;
#endif
}
//delay(1);
//if (storage_needs_flush()) {
// storage_flush();
//}
}
if (escape == 0) {
if (c == 4 && vstr_len(line) == len) {
return 0;
} else if (c == '\r') {
stdout_tx_str("\r\n");
for (int i = READLINE_HIST_SIZE - 1; i > 0; i--) {
readline_hist[i] = readline_hist[i - 1];
}
readline_hist[0] = strdup(vstr_str(line));
return 1;
} else if (c == 27) {
escape = true;
} else if (c == 127) {
if (vstr_len(line) > len) {
vstr_cut_tail(line, 1);
stdout_tx_str("\b \b");
}
} else if (32 <= c && c <= 126) {
vstr_add_char(line, c);
stdout_tx_str(line->buf + line->len - 1);
}
} else if (escape == 1) {
if (c == '[') {
escape = 2;
} else {
escape = 0;
}
} else if (escape == 2) {
escape = 0;
if (c == 'A') {
// up arrow
if (hist_num < READLINE_HIST_SIZE && readline_hist[hist_num] != NULL) {
// erase line
for (int i = line->len - len; i > 0; i--) {
stdout_tx_str("\b \b");
}
// set line to history
line->len = len;
vstr_add_str(line, readline_hist[hist_num]);
// draw line
stdout_tx_str(readline_hist[hist_num]);
// increase hist num
hist_num += 1;
}
}
} else {
escape = 0;
}
delay(10);
}
}
void setup(void) {
pinMode(LED_BUILTIN, OUTPUT);
ledState = 1;
digitalWrite(LED_BUILTIN, ledState);
ledTime = 0;
// Wait for host side to get connected
while (!usb_vcp_is_connected()) {
if (ledTime > 100) {
ledState = !ledState;
digitalWrite(LED_BUILTIN, ledState);
ledTime = 0;
}
}
digitalWrite(LED_BUILTIN, 0);
qstr_init();
rt_init();
stdout_tx_str("Micro Python for Teensy 3.1\r\n");
stdout_tx_str("Type \"help()\" for more information.\r\n");
}
void loop(void) {
vstr_t line;
vstr_init(&line);
vstr_reset(&line);
int ret = readline(&line, ">>> ");
if (ret == 0) {
// EOF
return;
}
if (vstr_len(&line) == 0) {
return;
}
if (mp_repl_is_compound_stmt(vstr_str(&line))) {
for (;;) {
vstr_add_char(&line, '\n');
int len = vstr_len(&line);
int ret = readline(&line, "... ");
if (ret == 0 || vstr_len(&line) == len) {
// done entering compound statement
break;
}
}
}
mp_lexer_str_buf_t sb;
mp_lexer_t *lex = mp_lexer_new_from_str_len("<stdin>", vstr_str(&line), vstr_len(&line), false, &sb);
mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT);
mp_lexer_free(lex);
if (pn != MP_PARSE_NODE_NULL) {
mp_obj_t module_fun = mp_compile(pn, true);
if (module_fun != mp_const_none) {
nlr_buf_t nlr;
uint32_t start = micros();
if (nlr_push(&nlr) == 0) {
rt_call_function_0(module_fun);
nlr_pop();
// optional timing
if (0) {
uint32_t ticks = micros() - start; // TODO implement a function that does this properly
printf("(took %lu us)\n", ticks);
}
} else {
// uncaught exception
mp_obj_print((mp_obj_t)nlr.ret_val);
printf("\r\n");
}
}
}
}
// for sqrt
#include <math.h>
machine_float_t machine_sqrt(machine_float_t x) {
return sqrt(x);
}
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