CircuitPython

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

#include "py/obj.h"
#include "py/compile.h"
#include "py/runtime.h"
#include "py/stackctrl.h"
#include "py/gc.h"
#include "py/mperrno.h"

#include "tinytest.h"
#include "tinytest_macros.h"

#define HEAP_SIZE (128 * 1024)
STATIC void *heap;

void do_str(const char *src);
inline void do_str(const char *src) {
    gc_init(heap, (char*)heap + HEAP_SIZE);
    mp_init();

    nlr_buf_t nlr;
    if (nlr_push(&nlr) == 0) {
        mp_lexer_t *lex = mp_lexer_new_from_str_len(MP_QSTR__lt_stdin_gt_, src, strlen(src), 0);
        qstr source_name = lex->source_name;
        mp_parse_tree_t parse_tree = mp_parse(lex, MP_PARSE_FILE_INPUT);
        mp_obj_t module_fun = mp_compile(&parse_tree, source_name, MP_EMIT_OPT_NONE, false);
        mp_call_function_0(module_fun);
        nlr_pop();
    } else {
        mp_obj_t exc = (mp_obj_t)nlr.ret_val;
        if (mp_obj_is_subclass_fast(mp_obj_get_type(exc), &mp_type_SystemExit)) {
            // Assume that sys.exit() is called to skip the test.
            // TODO: That can be always true, we should set up convention to
            // use specific exit code as skip indicator.
            tinytest_set_test_skipped_();
            goto end;
        }
        mp_obj_print_exception(&mp_plat_print, exc);
        tt_abort_msg("Uncaught exception");
    }
end:
    mp_deinit();
}

#include "genhdr/tests.h"

int main() {
    const char a[] = {"sim"};
    mp_stack_ctrl_init();
    mp_stack_set_limit(10240);
    heap = malloc(HEAP_SIZE);
    int r = tinytest_main(1, (const char **) a, groups);
    printf( "status: %i\n", r);
    return r;
}

void gc_collect(void) {
    gc_collect_start();

    // get the registers and the sp
    jmp_buf env;
    setjmp(env);
    volatile mp_uint_t dummy;
    void *sp = (void*)&dummy;

    // trace the stack, including the registers (since they live on the stack in this function)
    gc_collect_root((void**)sp, ((uint32_t)MP_STATE_THREAD(stack_top) - (uint32_t)sp) / sizeof(uint32_t));

    gc_collect_end();
}

mp_lexer_t *mp_lexer_new_from_file(const char *filename) {
    mp_raise_OSError(MP_ENOENT);
}

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

mp_obj_t mp_builtin_open(size_t 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) {
    printf("uncaught NLR\n");
    exit(1);
}