/* -*-comment-start: "//";comment-end:""-*-
 * GNU Mes --- Maxwell Equations of Software
 * Copyright © 2016,2017,2018,2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
 *
 * This file is part of GNU Mes.
 *
 * GNU Mes is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or (at
 * your option) any later version.
 *
 * GNU Mes is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Mes.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __MES_MES_H
#define __MES_MES_H

#include <sys/types.h>
#include "mes/cc.h"

struct scm
{
  long type;
  union
  {
    struct scm* car;
    char *bytes;
    long length;
    struct scm* ref;
    struct scm* variable;
    struct scm* macro;
    long port;
  };
  union
  {
    struct scm* cdr;
    struct scm* closure;
    struct scm* continuation;
    char *name;
    struct scm* string;
    struct scm* structure;
    long value;
    struct scm* vector;
  };
};

/* mes */
char *g_datadir;
int g_debug;
char *g_buf;
struct scm* g_continuations;
struct scm* g_symbols;
struct scm* g_symbol_max;
int g_mini;

/* a/env */
struct scm* R0;
/* param 1 */
struct scm* R1;
/* save 2 */
struct scm* R2;
/* continuation */
struct scm* R3;
/* current-module */
struct scm* M0;
/* macro */
struct scm* g_macros;
struct scm* g_ports;

/* gc */
long ARENA_SIZE;
long MAX_ARENA_SIZE;
long STACK_SIZE;
long JAM_SIZE;
long GC_SAFETY;
long MAX_STRING;
char *g_arena;
struct scm* cell_arena;
struct scm* cell_zero;

struct scm* g_free;
struct scm* g_symbol;

struct scm* *g_stack_array;
struct scm *g_cells;
struct scm *g_news;
long g_stack;

char **__execl_c_argv;
char *__getcwd_buf;
char *__open_boot_buf;
char *__open_boot_file_name;
char *__setenv_buf;
char *__reader_read_char_buf;
struct timespec *g_start_time;
struct timeval *__gettimeofday_time;
struct timespec *__get_internal_run_time_ts;

struct scm* alloc (long n);
struct scm* apply (struct scm* f, struct scm* x, struct scm* a);
struct scm* apply_builtin (struct scm* fn, struct scm* x);
struct scm* apply_builtin0 (struct scm* fn);
struct scm* apply_builtin1 (struct scm* fn, struct scm* x);
struct scm* apply_builtin2 (struct scm* fn, struct scm* x, struct scm* y);
struct scm* apply_builtin3 (struct scm* fn, struct scm* x, struct scm* y, struct scm* z);
struct scm* builtin_name (struct scm* builtin);
struct scm* cstring_to_list (char const *s);
struct scm* cstring_to_symbol (char const *s);
struct scm* cell_ref (struct scm* cell, long index);
struct scm* fdisplay_ (struct scm*, int, int);
struct scm* init_symbols ();
struct scm* init_time (struct scm* a);
struct scm* make_builtin_type ();
struct scm* make_bytes (char const *s, size_t length);
struct scm* make_cell (long type, struct scm* car, struct scm* cdr);
struct scm* make_char (int n);
struct scm* make_continuation (long n);
struct scm* make_hash_table_ (long size);
struct scm* make_hashq_type ();
struct scm* make_initial_module (struct scm* a);
struct scm* make_macro (struct scm* name, struct scm* x);
struct scm* make_number (long n);
struct scm* make_ref (struct scm* x);
struct scm* make_string (char const *s, size_t length);
struct scm* make_string0 (char const *s);
struct scm* make_string_port (struct scm* x);
struct scm* make_vector_ (long k, struct scm* e);
struct scm* mes_builtins (struct scm* a);
struct scm* push_cc (struct scm* p1, struct scm* p2, struct scm* a, struct scm* c);
struct scm* struct_ref_ (struct scm* x, long i);
struct scm* struct_set_x_ (struct scm* x, long i, struct scm* e);
struct scm* vector_ref_ (struct scm* x, long i);
struct scm* vector_set_x_ (struct scm* x, long i, struct scm* e);
FUNCTION builtin_function (struct scm* builtin);
char *cell_bytes (struct scm* x);
char *news_bytes (struct scm* x);
int peekchar ();
int readchar ();
int unreadchar ();
long gc_free ();
long length__ (struct scm* x);
size_t bytes_cells (size_t length);
void assert_max_string (size_t i, char const *msg, char *string);
void assert_msg (int check, char *msg);
void assert_number (char const *name, struct scm* x);
void copy_cell (struct scm* to, struct scm* from);
void gc_ ();
void gc_dump_arena (struct scm *cells, long size);
void gc_init ();
void gc_peek_frame ();
void gc_pop_frame ();
void gc_push_frame ();
void gc_stats_ (char const* where);
void init_symbols_ ();

#include "mes/builtins.h"
#include "mes/constants.h"
#include "mes/macros.h"
#include "mes/symbols.h"

#endif /* __MES_MES_H */