micropython/minimal/main.c

#include <stdint.h>
#include <stdio.h>
#include <string.h>

#include "py/nlr.h"
#include "py/parsehelper.h"
#include "py/compile.h"
#include "py/runtime.h"
#include "py/repl.h"
#include "py/pfenv.h"

void do_str(const char *src) {
    mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
    if (lex == NULL) {
        return;
    }

    mp_parse_error_kind_t parse_error_kind;
    mp_parse_node_t pn = mp_parse(lex, MP_PARSE_SINGLE_INPUT, &parse_error_kind);

    if (pn == MP_PARSE_NODE_NULL) {
        // parse error
        mp_parse_show_exception(lex, parse_error_kind);
        mp_lexer_free(lex);
        return;
    }

    // parse okay
    qstr source_name = lex->source_name;
    mp_lexer_free(lex);
    mp_obj_t module_fun = mp_compile(pn, source_name, MP_EMIT_OPT_NONE, true);

    if (mp_obj_is_exception_instance(module_fun)) {
        // compile error
        mp_obj_print_exception(printf_wrapper, NULL, module_fun);
        return;
    }

    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
        mp_call_function_0(module_fun);
        nlr_pop();
    } else {
        // uncaught exception
        mp_obj_print_exception(printf_wrapper, NULL, (mp_obj_t)nlr.ret_val);
    }
}

int main(int argc, char **argv) {
    mp_init();
    do_str("print('hello world!', list(x+1 for x in range(10)), end='eol\n')");
    mp_deinit();
    return 0;
}

void gc_collect(void) {
}

mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
    return NULL;
}

mp_import_stat_t mp_import_stat(const char *path) {
    return MP_IMPORT_STAT_NO_EXIST;
}

mp_obj_t mp_builtin_open(uint n_args, const mp_obj_t *args, mp_map_t *kwargs) {
    return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_KW(mp_builtin_open_obj, 1, mp_builtin_open);

void nlr_jump_fail(void *val) {
}

void NORETURN __fatal_error(const char *msg) {
    while (1);
}

#ifndef NDEBUG
void MP_WEAK __assert_func(const char *file, int line, const char *func, const char *expr) {
    printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
    __fatal_error("Assertion failed");
}
#endif

/*
int _lseek() {return 0;}
int _read() {return 0;}
int _write() {return 0;}
int _close() {return 0;}
void _exit(int x) {for(;;){}}
int _sbrk() {return 0;}
int _kill() {return 0;}
int _getpid() {return 0;}
int _fstat() {return 0;}
int _isatty() {return 0;}
*/

void *malloc(size_t n) {return NULL;}
void *calloc(size_t nmemb, size_t size) {return NULL;}
void *realloc(void *ptr, size_t size) {return NULL;}
void free(void *p) {}
int printf(const char *m, ...) {return 0;}
void *memcpy(void *dest, const void *src, size_t n) {return NULL;}
int memcmp(const void *s1, const void *s2, size_t n) {return 0;}
void *memmove(void *dest, const void *src, size_t n) {return NULL;}
void *memset(void *s, int c, size_t n) {return NULL;}
int strcmp(const char *s1, const char* s2) {return 0;}
int strncmp(const char *s1, const char* s2, size_t n) {return 0;}
size_t strlen(const char *s) {return 0;}
char *strcat(char *dest, const char *src) {return NULL;}
char *strchr(const char *dest, int c) {return NULL;}
#include <stdarg.h>
int vprintf(const char *format, va_list ap) {return 0;}
int vsnprintf(char *str,  size_t  size,  const  char  *format, va_list ap) {return 0;}

#undef putchar
int putchar(int c) {return 0;}
int puts(const char *s) {return 0;}

void _start(void) {main(0, NULL);}