/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2013, 2014 Damien P. George and 2017, 2018 Rami Ali
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

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

#include "py/compile.h"
#include "py/runtime.h"
#include "py/repl.h"
#include "py/gc.h"
#include "py/mperrno.h"
#include "lib/utils/pyexec.h"

#include "library.h"

#if MICROPY_ENABLE_COMPILER
int do_str(const char *src, mp_parse_input_kind_t input_kind) {
 int ret = 0;
 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, input_kind);
 mp_obj_t module_fun = mp_compile(&parse_tree, source_name, false);
 mp_call_function_0(module_fun);
 nlr_pop();
 } else {
 // uncaught exception
 if (mp_obj_is_subclass_fast(mp_obj_get_type((mp_obj_t)nlr.ret_val), &mp_type_SystemExit)) {
 mp_obj_t exit_val = mp_obj_exception_get_value(MP_OBJ_FROM_PTR(nlr.ret_val));
 if (exit_val != mp_const_none) {
 mp_int_t int_val;
 if (mp_obj_get_int_maybe(exit_val, &int_val)) {
 ret = int_val & 255;
 } else {
 ret = 1;
 }
 }
 } else {
 mp_obj_print_exception(&mp_plat_print, (mp_obj_t)nlr.ret_val);
 ret = 1;
 }
 }
 return ret;
}
#endif

static char *stack_top;

int mp_js_do_str(const char *code) {
 return do_str(code, MP_PARSE_FILE_INPUT);
}

int mp_js_process_char(int c) {
 return pyexec_event_repl_process_char(c);
}

void mp_js_init(int heap_size) {
 int stack_dummy;
 stack_top = (char *)&stack_dummy;

 #if MICROPY_ENABLE_GC
 char *heap = (char *)malloc(heap_size * sizeof(char));
 gc_init(heap, heap + heap_size);
 #endif

 #if MICROPY_ENABLE_PYSTACK
 static mp_obj_t pystack[1024];
 mp_pystack_init(pystack, &pystack[MP_ARRAY_SIZE(pystack)]);
 #endif

 mp_init();

 mp_obj_list_init(mp_sys_path, 0);
 mp_obj_list_append(mp_sys_path, MP_OBJ_NEW_QSTR(MP_QSTR_));
 mp_obj_list_init(mp_sys_argv, 0);
}

void mp_js_init_repl() {
 pyexec_event_repl_init();
}

void gc_collect(void) {
 // WARNING: This gc_collect implementation doesn't try to get root
 // pointers from CPU registers, and thus may function incorrectly.
 jmp_buf dummy;
 if (setjmp(dummy) == 0) {
 longjmp(dummy, 1);
 }
 gc_collect_start();
 gc_collect_root((void *)stack_top, ((mp_uint_t)(void *)(&dummy + 1) - (mp_uint_t)stack_top) / sizeof(mp_uint_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) {
 while (1) {
 ;
 }
}

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