/* -*-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/>.
 */

#include "mes/lib.h"
#include "mes/mes.h"

SCM
make_builtin_type ()            ///(internal))
{
  SCM record_type = cell_symbol_record_type;
  SCM fields = cell_nil;
  fields = cons (cstring_to_symbol ("address"), fields);
  fields = cons (cstring_to_symbol ("arity"), fields);
  fields = cons (cstring_to_symbol ("name"), fields);
  fields = cons (fields, cell_nil);
  fields = cons (cell_symbol_builtin, fields);
  return make_struct (record_type, fields, cell_unspecified);
}

SCM
make_builtin (SCM builtin_type, SCM name, SCM arity, SCM function)
{
  SCM values = cell_nil;
  values = cons (function, values);
  values = cons (arity, values);
  values = cons (name, values);
  values = cons (cell_symbol_builtin, values);
  return make_struct (builtin_type, values, cstring_to_symbol ("builtin-printer"));
}

SCM
builtin_name (SCM builtin)
{
  return struct_ref_ (builtin, 3);
}

SCM
builtin_arity (SCM builtin)
{
  return struct_ref_ (builtin, 4);
}

#if __MESC__
long
builtin_function (SCM builtin)
{
  return VALUE (struct_ref_ (builtin, 5));
}
#else
SCM (*builtin_function (SCM builtin)) (SCM)
{
  return (function1_t) VALUE (struct_ref_ (builtin, 5));
}
#endif

SCM
builtin_p (SCM x)
{
  return (TYPE (x) == TSTRUCT && struct_ref_ (x, 2) == cell_symbol_builtin) ? cell_t : cell_f;
}

SCM
builtin_printer (SCM builtin)
{
  fdputs ("#<procedure ", __stdout);
  display_ (builtin_name (builtin));
  fdputc (' ', __stdout);
  int arity = VALUE (builtin_arity (builtin));
  if (arity == -1)
    fdputc ('_', __stdout);
  else
    {
      fdputc ('(', __stdout);
      for (int i = 0; i < arity; i++)
        {
          if (i)
            fdputc (' ', __stdout);
          fdputc ('_', __stdout);
        }
    }
  fdputc ('>', __stdout);
}

SCM
init_builtin (SCM builtin_type, char const *name, int arity, SCM (*function) (SCM), SCM a)
{
  SCM s = cstring_to_symbol (name);
  return acons (s,
                make_builtin (builtin_type, symbol_to_string (s), MAKE_NUMBER (arity),
                              MAKE_NUMBER (function)), a);
}

SCM
mes_builtins (SCM a)            ///((internal))
{
  // TODO minimal: cons, car, cdr, list, null_p, eq_p minus, plus
  // display_, display_error_, getenv

  SCM builtin_type = make_builtin_type ();

  /* src/builtins.c */
  a = init_builtin (builtin_type, "make-builtin-type", 0, (function1_t) & make_builtin_type, a);
  a = init_builtin (builtin_type, "make-builtin", 4, (function1_t) & make_builtin, a);
  a = init_builtin (builtin_type, "builtin-name", 1, (function1_t) & builtin_name, a);
  a = init_builtin (builtin_type, "builtin-arity", 1, (function1_t) & builtin_arity, a);
  a = init_builtin (builtin_type, "builtin?", 1, (function1_t) & builtin_p, a);
  a = init_builtin (builtin_type, "builtin-printer", 1, (function1_t) & builtin_printer, a);
  /* src/gc.c */
  a = init_builtin (builtin_type, "gc-check", 0, (function1_t) & gc_check, a);
  a = init_builtin (builtin_type, "gc", 0, (function1_t) & gc, a);
  /* src/hash.c */
  a = init_builtin (builtin_type, "hashq", 2, (function1_t) & hashq, a);
  a = init_builtin (builtin_type, "hash", 2, (function1_t) & hash, a);
  a = init_builtin (builtin_type, "hashq-get-handle", 3, (function1_t) & hashq_get_handle, a);
  a = init_builtin (builtin_type, "hashq-ref", 3, (function1_t) & hashq_ref, a);
  a = init_builtin (builtin_type, "hash-ref", 3, (function1_t) & hash_ref, a);
  a = init_builtin (builtin_type, "hashq-set!", 3, (function1_t) & hashq_set_x, a);
  a = init_builtin (builtin_type, "hash-set!", 3, (function1_t) & hash_set_x, a);
  a = init_builtin (builtin_type, "hash-table-printer", 1, (function1_t) & hash_table_printer, a);
  a = init_builtin (builtin_type, "make-hash-table", 1, (function1_t) & make_hash_table, a);
  /* src/lib.c */
  a = init_builtin (builtin_type, "core:display", 1, (function1_t) & display_, a);
  a = init_builtin (builtin_type, "core:display-error", 1, (function1_t) & display_error_, a);
  a = init_builtin (builtin_type, "core:display-port", 2, (function1_t) & display_port_, a);
  a = init_builtin (builtin_type, "core:write", 1, (function1_t) & write_, a);
  a = init_builtin (builtin_type, "core:write-error", 1, (function1_t) & write_error_, a);
  a = init_builtin (builtin_type, "core:write-port", 2, (function1_t) & write_port_, a);
  a = init_builtin (builtin_type, "exit", 1, (function1_t) & exit_, a);
  a = init_builtin (builtin_type, "frame-printer", 1, (function1_t) & frame_printer, a);
  a = init_builtin (builtin_type, "make-stack", -1, (function1_t) & make_stack, a);
  a = init_builtin (builtin_type, "stack-length", 1, (function1_t) & stack_length, a);
  a = init_builtin (builtin_type, "stack-ref", 2, (function1_t) & stack_ref, a);
  a = init_builtin (builtin_type, "xassq", 2, (function1_t) & xassq, a);
  a = init_builtin (builtin_type, "memq", 2, (function1_t) & memq, a);
  a = init_builtin (builtin_type, "equal2?", 2, (function1_t) & equal2_p, a);
  a = init_builtin (builtin_type, "last-pair", 1, (function1_t) & last_pair, a);
  a = init_builtin (builtin_type, "pair?", 1, (function1_t) & pair_p, a);
  /* src/math.c */
  a = init_builtin (builtin_type, ">", -1, (function1_t) & greater_p, a);
  a = init_builtin (builtin_type, "<", -1, (function1_t) & less_p, a);
  a = init_builtin (builtin_type, "=", -1, (function1_t) & is_p, a);
  a = init_builtin (builtin_type, "-", -1, (function1_t) & minus, a);
  a = init_builtin (builtin_type, "+", -1, (function1_t) & plus, a);
  a = init_builtin (builtin_type, "/", -1, (function1_t) & divide, a);
  a = init_builtin (builtin_type, "modulo", 2, (function1_t) & modulo, a);
  a = init_builtin (builtin_type, "*", -1, (function1_t) & multiply, a);
  a = init_builtin (builtin_type, "logand", -1, (function1_t) & logand, a);
  a = init_builtin (builtin_type, "logior", -1, (function1_t) & logior, a);
  a = init_builtin (builtin_type, "lognot", 1, (function1_t) & lognot, a);
  a = init_builtin (builtin_type, "logxor", -1, (function1_t) & logxor, a);
  a = init_builtin (builtin_type, "ash", 2, (function1_t) & ash, a);
  /* src/mes.c */
  a = init_builtin (builtin_type, "core:make-cell", 3, (function1_t) & make_cell_, a);
  a = init_builtin (builtin_type, "core:type", 1, (function1_t) & type_, a);
  a = init_builtin (builtin_type, "core:car", 1, (function1_t) & car_, a);
  a = init_builtin (builtin_type, "core:cdr", 1, (function1_t) & cdr_, a);
  a = init_builtin (builtin_type, "cons", 2, (function1_t) & cons, a);
  a = init_builtin (builtin_type, "car", 1, (function1_t) & car, a);
  a = init_builtin (builtin_type, "cdr", 1, (function1_t) & cdr, a);
  a = init_builtin (builtin_type, "list", -1, (function1_t) & list, a);
  a = init_builtin (builtin_type, "null?", 1, (function1_t) & null_p, a);
  a = init_builtin (builtin_type, "eq?", 2, (function1_t) & eq_p, a);
  a = init_builtin (builtin_type, "values", -1, (function1_t) & values, a);
  a = init_builtin (builtin_type, "acons", 3, (function1_t) & acons, a);
  a = init_builtin (builtin_type, "length", 1, (function1_t) & length, a);
  a = init_builtin (builtin_type, "error", 2, (function1_t) & error, a);
  a = init_builtin (builtin_type, "append2", 2, (function1_t) & append2, a);
  a = init_builtin (builtin_type, "append-reverse", 2, (function1_t) & append_reverse, a);
  a = init_builtin (builtin_type, "core:reverse!", 2, (function1_t) & reverse_x_, a);
  a = init_builtin (builtin_type, "pairlis", 3, (function1_t) & pairlis, a);
  a = init_builtin (builtin_type, "assq", 2, (function1_t) & assq, a);
  a = init_builtin (builtin_type, "assoc", 2, (function1_t) & assoc, a);
  a = init_builtin (builtin_type, "set-car!", 2, (function1_t) & set_car_x, a);
  a = init_builtin (builtin_type, "set-cdr!", 2, (function1_t) & set_cdr_x, a);
  a = init_builtin (builtin_type, "set-env!", 3, (function1_t) & set_env_x, a);
  a = init_builtin (builtin_type, "macro-get-handle", 1, (function1_t) & macro_get_handle, a);
  a = init_builtin (builtin_type, "add-formals", 2, (function1_t) & add_formals, a);
  a = init_builtin (builtin_type, "eval-apply", 0, (function1_t) & eval_apply, a);
  /* src/module.c */
  a = init_builtin (builtin_type, "make-module-type", 0, (function1_t) & make_module_type, a);
  a = init_builtin (builtin_type, "module-printer", 1, (function1_t) & module_printer, a);
  a = init_builtin (builtin_type, "module-variable", 2, (function1_t) & module_variable, a);
  a = init_builtin (builtin_type, "module-ref", 2, (function1_t) & module_ref, a);
  a = init_builtin (builtin_type, "module-define!", 3, (function1_t) & module_define_x, a);
  /* src/posix.c */
  a = init_builtin (builtin_type, "peek-byte", 0, (function1_t) & peek_byte, a);
  a = init_builtin (builtin_type, "read-byte", 0, (function1_t) & read_byte, a);
  a = init_builtin (builtin_type, "unread-byte", 1, (function1_t) & unread_byte, a);
  a = init_builtin (builtin_type, "peek-char", 0, (function1_t) & peek_char, a);
  a = init_builtin (builtin_type, "read-char", -1, (function1_t) & read_char, a);
  a = init_builtin (builtin_type, "unread-char", 1, (function1_t) & unread_char, a);
  a = init_builtin (builtin_type, "write-char", -1, (function1_t) & write_char, a);
  a = init_builtin (builtin_type, "write-byte", -1, (function1_t) & write_byte, a);
  a = init_builtin (builtin_type, "getenv", 1, (function1_t) & getenv_, a);
  a = init_builtin (builtin_type, "setenv", 2, (function1_t) & setenv_, a);
  a = init_builtin (builtin_type, "access?", 2, (function1_t) & access_p, a);
  a = init_builtin (builtin_type, "current-input-port", 0, (function1_t) & current_input_port, a);
  a = init_builtin (builtin_type, "open-input-file", 1, (function1_t) & open_input_file, a);
  a = init_builtin (builtin_type, "open-input-string", 1, (function1_t) & open_input_string, a);
  a = init_builtin (builtin_type, "set-current-input-port", 1, (function1_t) & set_current_input_port, a);
  a = init_builtin (builtin_type, "current-output-port", 0, (function1_t) & current_output_port, a);
  a = init_builtin (builtin_type, "current-error-port", 0, (function1_t) & current_error_port, a);
  a = init_builtin (builtin_type, "open-output-file", -1, (function1_t) & open_output_file, a);
  a = init_builtin (builtin_type, "set-current-output-port", 1, (function1_t) & set_current_output_port, a);
  a = init_builtin (builtin_type, "set-current-error-port", 1, (function1_t) & set_current_error_port, a);
  a = init_builtin (builtin_type, "chmod", 2, (function1_t) & chmod_, a);
  a = init_builtin (builtin_type, "isatty?", 1, (function1_t) & isatty_p, a);
  a = init_builtin (builtin_type, "primitive-fork", 0, (function1_t) & primitive_fork, a);
  a = init_builtin (builtin_type, "execl", 2, (function1_t) & execl_, a);
  a = init_builtin (builtin_type, "core:waitpid", 2, (function1_t) & waitpid_, a);
  a = init_builtin (builtin_type, "current-time", 0, (function1_t) & current_time, a);
  a = init_builtin (builtin_type, "gettimeofday", 0, (function1_t) & gettimeofday_, a);
  a = init_builtin (builtin_type, "get-internal-run-time", 0, (function1_t) & get_internal_run_time, a);
  a = init_builtin (builtin_type, "getcwd", 0, (function1_t) & getcwd_, a);
  a = init_builtin (builtin_type, "dup", 1, (function1_t) & dup_, a);
  a = init_builtin (builtin_type, "dup2", 2, (function1_t) & dup2_, a);
  a = init_builtin (builtin_type, "delete-file", 1, (function1_t) & delete_file, a);
  /* src/reader.c */
  a = init_builtin (builtin_type, "core:read-input-file-env", 2, (function1_t) & read_input_file_env_, a);
  a = init_builtin (builtin_type, "read-input-file-env", 1, (function1_t) & read_input_file_env, a);
  a = init_builtin (builtin_type, "read-env", 1, (function1_t) & read_env, a);
  a = init_builtin (builtin_type, "reader-read-sexp", 3, (function1_t) & reader_read_sexp, a);
  a = init_builtin (builtin_type, "reader-read-character", 0, (function1_t) & reader_read_character, a);
  a = init_builtin (builtin_type, "reader-read-binary", 0, (function1_t) & reader_read_binary, a);
  a = init_builtin (builtin_type, "reader-read-octal", 0, (function1_t) & reader_read_octal, a);
  a = init_builtin (builtin_type, "reader-read-hex", 0, (function1_t) & reader_read_hex, a);
  a = init_builtin (builtin_type, "reader-read-string", 0, (function1_t) & reader_read_string, a);
  /* src/string.c */
  a = init_builtin (builtin_type, "string=?", 2, (function1_t) & string_equal_p, a);
  a = init_builtin (builtin_type, "symbol->string", 1, (function1_t) & symbol_to_string, a);
  a = init_builtin (builtin_type, "symbol->keyword", 1, (function1_t) & symbol_to_keyword, a);
  a = init_builtin (builtin_type, "keyword->string", 1, (function1_t) & keyword_to_string, a);
  a = init_builtin (builtin_type, "string->symbol", 1, (function1_t) & string_to_symbol, a);
  a = init_builtin (builtin_type, "make-symbol", 1, (function1_t) & make_symbol, a);
  a = init_builtin (builtin_type, "string->list", 1, (function1_t) & string_to_list, a);
  a = init_builtin (builtin_type, "list->string", 1, (function1_t) & list_to_string, a);
  a = init_builtin (builtin_type, "read-string", -1, (function1_t) & read_string, a);
  a = init_builtin (builtin_type, "string-append", -1, (function1_t) & string_append, a);
  a = init_builtin (builtin_type, "string-length", 1, (function1_t) & string_length, a);
  a = init_builtin (builtin_type, "string-ref", 2, (function1_t) & string_ref, a);
  /* src/struct.c */
  a = init_builtin (builtin_type, "make-struct", 3, (function1_t) & make_struct, a);
  a = init_builtin (builtin_type, "struct-length", 1, (function1_t) & struct_length, a);
  a = init_builtin (builtin_type, "struct-ref", 2, (function1_t) & struct_ref, a);
  a = init_builtin (builtin_type, "struct-set!", 3, (function1_t) & struct_set_x, a);
  /* src/vector.c */
  a = init_builtin (builtin_type, "core:make-vector", 1, (function1_t) & make_vector_, a);
  a = init_builtin (builtin_type, "vector-length", 1, (function1_t) & vector_length, a);
  a = init_builtin (builtin_type, "vector-ref", 2, (function1_t) & vector_ref, a);
  a = init_builtin (builtin_type, "vector-entry", 1, (function1_t) & vector_entry, a);
  a = init_builtin (builtin_type, "vector-set!", 3, (function1_t) & vector_set_x, a);
  a = init_builtin (builtin_type, "list->vector", 1, (function1_t) & list_to_vector, a);
  a = init_builtin (builtin_type, "vector->list", 1, (function1_t) & vector_to_list, a);
  return a;
}