circuitpython/unix/main.c

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C
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#include <stdint.h>
#include <stdio.h>
#include <string.h>
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#include <stdlib.h>
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#include "nlr.h"
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#include "misc.h"
#include "mpconfig.h"
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#include "lexer.h"
#include "lexerunix.h"
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#include "parse.h"
#include "obj.h"
#include "compile.h"
#include "runtime0.h"
#include "runtime.h"
#include "repl.h"
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#if MICROPY_USE_READLINE
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#include <readline/readline.h>
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#include <readline/history.h>
#endif
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extern const mp_obj_fun_native_t mp_builtin_open_obj;
static void execute_from_lexer(mp_lexer_t *lex, mp_parse_input_kind_t input_kind, bool is_repl) {
if (lex == NULL) {
return;
}
if (0) {
// just tokenise
while (!mp_lexer_is_kind(lex, MP_TOKEN_END)) {
mp_token_show(mp_lexer_cur(lex));
mp_lexer_to_next(lex);
}
mp_lexer_free(lex);
return;
}
mp_parse_node_t pn = mp_parse(lex, input_kind);
mp_lexer_free(lex);
if (pn == MP_PARSE_NODE_NULL) {
// parse error
return;
}
//printf("----------------\n");
//parse_node_show(pn, 0);
//printf("----------------\n");
mp_obj_t module_fun = mp_compile(pn, is_repl);
if (module_fun == mp_const_none) {
// compile error
return;
}
// execute it
nlr_buf_t nlr;
if (nlr_push(&nlr) == 0) {
rt_call_function_0(module_fun);
nlr_pop();
} else {
// uncaught exception
mp_obj_print((mp_obj_t)nlr.ret_val);
printf("\n");
}
}
static char *str_join(const char *s1, int sep_char, const char *s2) {
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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;
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return s;
}
static char *prompt(char *p) {
#if MICROPY_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;
}
static void do_repl(void) {
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for (;;) {
char *line = prompt(">>> ");
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if (line == NULL) {
// EOF
return;
}
if (mp_repl_is_compound_stmt(line)) {
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for (;;) {
char *line2 = prompt("... ");
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if (line2 == NULL || strlen(line2) == 0) {
break;
}
char *line3 = str_join(line, '\n', line2);
free(line);
free(line2);
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line = line3;
}
}
mp_lexer_t *lex = mp_lexer_new_from_str_len("<stdin>", line, strlen(line), false);
execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, true);
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}
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}
static void do_file(const char *file) {
// hack: set dir for import based on where this file is
{
const char * s = strrchr(file, '/');
if (s != NULL) {
int len = s - file;
char *dir = m_new(char, len + 1);
memcpy(dir, file, len);
dir[len] = '\0';
mp_import_set_directory(dir);
}
}
mp_lexer_t *lex = mp_lexer_new_from_file(file);
execute_from_lexer(lex, MP_PARSE_FILE_INPUT, false);
}
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static void do_str(const char *str) {
mp_lexer_t *lex = mp_lexer_new_from_str_len("<stdin>", str, strlen(str), false);
execute_from_lexer(lex, MP_PARSE_SINGLE_INPUT, false);
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}
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typedef struct _test_obj_t {
mp_obj_base_t base;
int value;
} test_obj_t;
static void test_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t self_in) {
test_obj_t *self = self_in;
print(env, "<test %d>", self->value);
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}
static mp_obj_t test_get(mp_obj_t self_in) {
test_obj_t *self = self_in;
return mp_obj_new_int(self->value);
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}
static mp_obj_t test_set(mp_obj_t self_in, mp_obj_t arg) {
test_obj_t *self = self_in;
self->value = mp_obj_get_int(arg);
return mp_const_none;
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}
static MP_DEFINE_CONST_FUN_OBJ_1(test_get_obj, test_get);
static MP_DEFINE_CONST_FUN_OBJ_2(test_set_obj, test_set);
static const mp_method_t test_methods[] = {
{ "get", &test_get_obj },
{ "set", &test_set_obj },
{ NULL, NULL },
};
static const mp_obj_type_t test_type = {
{ &mp_const_type },
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"Test",
.print = test_print,
.methods = test_methods,
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};
mp_obj_t test_obj_new(int value) {
test_obj_t *o = m_new_obj(test_obj_t);
o->base.type = &test_type;
o->value = value;
return o;
}
int usage(void) {
printf("usage: py [-c <command>] [<filename>]\n");
return 1;
}
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int main(int argc, char **argv) {
qstr_init();
rt_init();
rt_store_name(qstr_from_str_static("test"), test_obj_new(42));
rt_store_name(qstr_from_str_static("open"), (mp_obj_t)&mp_builtin_open_obj);
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// Here is some example code to create a class and instance of that class.
// First is the Python, then the C code.
//
// class TestClass:
// pass
// test_obj = TestClass()
// test_obj.attr = 42
mp_obj_t test_class_type, test_class_instance;
test_class_type = mp_obj_new_type(qstr_from_str_static("TestClass"), mp_const_empty_tuple, mp_obj_new_dict(0));
rt_store_name(qstr_from_str_static("test_obj"), test_class_instance = rt_call_function_0(test_class_type));
rt_store_attr(test_class_instance, qstr_from_str_static("attr"), mp_obj_new_int(42));
/*
printf("bytes:\n");
printf(" total %d\n", m_get_total_bytes_allocated());
printf(" cur %d\n", m_get_current_bytes_allocated());
printf(" peak %d\n", m_get_peak_bytes_allocated());
*/
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if (argc == 1) {
do_repl();
} else {
for (int a = 1; a < argc; a++) {
if (argv[a][0] == '-') {
if (strcmp(argv[a], "-c") == 0) {
if (a + 1 >= argc) {
return usage();
}
do_str(argv[a + 1]);
a += 1;
} else {
return usage();
}
} else {
do_file(argv[a]);
}
}
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}
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rt_deinit();
//printf("total bytes = %d\n", m_get_total_bytes_allocated());
return 0;
}
// for sqrt
#include <math.h>
machine_float_t machine_sqrt(machine_float_t x) {
return sqrt(x);
}