1655 lines
42 KiB
C
1655 lines
42 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
|
||
* Mes --- Maxwell Equations of Software
|
||
* Copyright © 2016,2017,2018 Jan Nieuwenhuizen <janneke@gnu.org>
|
||
*
|
||
* This file is part of Mes.
|
||
*
|
||
* 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.
|
||
*
|
||
* 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 Mes. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
#include <stdio.h>
|
||
#include <assert.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <mlibc.h>
|
||
|
||
int ARENA_SIZE = 20000000; // 32B: 100 MiB, 64b: 200 MiB
|
||
#if __MESC__
|
||
//int MAX_ARENA_SIZE = 89478485; // 32b: ~1GiB
|
||
int MAX_ARENA_SIZE = 80000000; // 32b: ~1GiB
|
||
#else
|
||
int MAX_ARENA_SIZE = 200000000; // 32b: 2GiB, 64b: 4GiB
|
||
#endif
|
||
|
||
int GC_SAFETY = 250;
|
||
|
||
char *g_arena = 0;
|
||
typedef int SCM;
|
||
|
||
int g_debug = 0;
|
||
int g_free = 0;
|
||
|
||
SCM g_continuations = 0;
|
||
SCM g_symbols = 0;
|
||
SCM g_stack = 0;
|
||
// a/env
|
||
SCM r0 = 0;
|
||
// param 1
|
||
SCM r1 = 0;
|
||
// save 2+load/dump
|
||
SCM r2 = 0;
|
||
// continuation
|
||
SCM r3 = 0;
|
||
|
||
enum type_t {TCHAR, TCLOSURE, TCONTINUATION, TFUNCTION, TKEYWORD, TMACRO, TNUMBER, TPAIR, TREF, TSPECIAL, TSTRING, TSYMBOL, TVALUES, TVECTOR, TBROKEN_HEART};
|
||
|
||
#if !_POSIX_SOURCE
|
||
struct scm {
|
||
enum type_t type;
|
||
SCM car;
|
||
SCM cdr;
|
||
};
|
||
struct function {
|
||
int (*function) (void);
|
||
int arity;
|
||
char *name;
|
||
};
|
||
#else
|
||
typedef SCM (*function0_t) (void);
|
||
typedef SCM (*function1_t) (SCM);
|
||
typedef SCM (*function2_t) (SCM, SCM);
|
||
typedef SCM (*function3_t) (SCM, SCM, SCM);
|
||
typedef SCM (*functionn_t) (SCM);
|
||
struct function {
|
||
union {
|
||
function0_t function0;
|
||
function1_t function1;
|
||
function2_t function2;
|
||
function3_t function3;
|
||
functionn_t functionn;
|
||
};
|
||
int arity;
|
||
char const *name;
|
||
};
|
||
struct scm {
|
||
enum type_t type;
|
||
union {
|
||
char const* name;
|
||
SCM string;
|
||
SCM car;
|
||
SCM ref;
|
||
int length;
|
||
};
|
||
union {
|
||
int value;
|
||
int function;
|
||
SCM cdr;
|
||
SCM closure;
|
||
SCM continuation;
|
||
SCM macro;
|
||
SCM vector;
|
||
int hits;
|
||
};
|
||
};
|
||
#endif
|
||
|
||
#if __MESC__
|
||
//FIXME
|
||
char *foobar = 0;
|
||
struct scm *g_cells = foobar;
|
||
struct scm *g_news = foobar;
|
||
#else
|
||
struct scm *g_cells = 0;
|
||
struct scm *g_news = 0;
|
||
#endif
|
||
|
||
struct scm scm_nil = {TSPECIAL, "()",0};
|
||
struct scm scm_f = {TSPECIAL, "#f",0};
|
||
struct scm scm_t = {TSPECIAL, "#t",0};
|
||
struct scm scm_dot = {TSPECIAL, ".",0};
|
||
struct scm scm_arrow = {TSPECIAL, "=>",0};
|
||
struct scm scm_undefined = {TSPECIAL, "*undefined*",0};
|
||
struct scm scm_unspecified = {TSPECIAL, "*unspecified*",0};
|
||
struct scm scm_closure = {TSPECIAL, "*closure*",0};
|
||
struct scm scm_circular = {TSPECIAL, "*circular*",0};
|
||
struct scm scm_begin = {TSPECIAL, "*begin*",0};
|
||
|
||
struct scm scm_symbol_dot = {TSYMBOL, "*dot*",0};
|
||
struct scm scm_symbol_lambda = {TSYMBOL, "lambda",0};
|
||
struct scm scm_symbol_begin = {TSYMBOL, "begin",0};
|
||
struct scm scm_symbol_if = {TSYMBOL, "if",0};
|
||
struct scm scm_symbol_quote = {TSYMBOL, "quote",0};
|
||
struct scm scm_symbol_define = {TSYMBOL, "define",0};
|
||
struct scm scm_symbol_define_macro = {TSYMBOL, "define-macro",0};
|
||
|
||
struct scm scm_symbol_quasiquote = {TSYMBOL, "quasiquote", 0};
|
||
struct scm scm_symbol_unquote = {TSYMBOL, "unquote", 0};
|
||
struct scm scm_symbol_unquote_splicing = {TSYMBOL, "unquote-splicing", 0};
|
||
struct scm scm_symbol_syntax = {TSYMBOL, "syntax",0};
|
||
struct scm scm_symbol_quasisyntax = {TSYMBOL, "quasisyntax", 0};
|
||
struct scm scm_symbol_unsyntax = {TSYMBOL, "unsyntax", 0};
|
||
struct scm scm_symbol_unsyntax_splicing = {TSYMBOL, "unsyntax-splicing", 0};
|
||
|
||
struct scm scm_symbol_set_x = {TSYMBOL, "set!",0};
|
||
|
||
struct scm scm_symbol_sc_expand = {TSYMBOL, "sc-expand",0};
|
||
struct scm scm_symbol_macro_expand = {TSYMBOL, "macro-expand",0};
|
||
struct scm scm_symbol_sc_expander_alist = {TSYMBOL, "*sc-expander-alist*",0};
|
||
|
||
struct scm scm_symbol_call_with_values = {TSYMBOL, "call-with-values",0};
|
||
struct scm scm_call_with_current_continuation = {TSPECIAL, "*call/cc*",0};
|
||
struct scm scm_symbol_call_with_current_continuation = {TSYMBOL, "call-with-current-continuation",0};
|
||
struct scm scm_symbol_current_module = {TSYMBOL, "current-module",0};
|
||
struct scm scm_symbol_primitive_load = {TSYMBOL, "primitive-load",0};
|
||
struct scm scm_symbol_read_input_file = {TSYMBOL, "read-input-file",0};
|
||
struct scm scm_symbol_write = {TSYMBOL, "write",0};
|
||
struct scm scm_symbol_display = {TSYMBOL, "display",0};
|
||
|
||
struct scm scm_symbol_throw = {TSYMBOL, "throw",0};
|
||
struct scm scm_symbol_not_a_number = {TSYMBOL, "not-a-number",0};
|
||
struct scm scm_symbol_not_a_pair = {TSYMBOL, "not-a-pair",0};
|
||
struct scm scm_symbol_system_error = {TSYMBOL, "system-error",0};
|
||
struct scm scm_symbol_wrong_number_of_args = {TSYMBOL, "wrong-number-of-args",0};
|
||
struct scm scm_symbol_wrong_type_arg = {TSYMBOL, "wrong-type-arg",0};
|
||
struct scm scm_symbol_unbound_variable = {TSYMBOL, "unbound-variable",0};
|
||
|
||
struct scm scm_symbol_argv = {TSYMBOL, "%argv",0};
|
||
struct scm scm_symbol_mes_prefix = {TSYMBOL, "%prefix",0};
|
||
struct scm scm_symbol_mes_version = {TSYMBOL, "%version",0};
|
||
|
||
struct scm scm_symbol_car = {TSYMBOL, "car",0};
|
||
struct scm scm_symbol_cdr = {TSYMBOL, "cdr",0};
|
||
struct scm scm_symbol_null_p = {TSYMBOL, "null?",0};
|
||
struct scm scm_symbol_eq_p = {TSYMBOL, "eq?",0};
|
||
struct scm scm_symbol_cons = {TSYMBOL, "cons",0};
|
||
|
||
struct scm scm_vm_evlis = {TSPECIAL, "*vm-evlis*",0};
|
||
struct scm scm_vm_evlis2 = {TSPECIAL, "*vm-evlis2*",0};
|
||
struct scm scm_vm_evlis3 = {TSPECIAL, "*vm-evlis3*",0};
|
||
struct scm scm_vm_apply = {TSPECIAL, "core:apply",0};
|
||
struct scm scm_vm_apply2 = {TSPECIAL, "*vm-apply2*",0};
|
||
struct scm scm_vm_eval = {TSPECIAL, "core:eval",0};
|
||
|
||
//MES_FIXED_PRIMITIVES
|
||
struct scm scm_vm_eval_car = {TSPECIAL, "*vm-eval-car*",0};
|
||
struct scm scm_vm_eval_cdr = {TSPECIAL, "*vm-eval-cdr*",0};
|
||
struct scm scm_vm_eval_cons = {TSPECIAL, "*vm-eval-cons*",0};
|
||
struct scm scm_vm_eval_null_p = {TSPECIAL, "*vm-eval-null-p*",0};
|
||
struct scm scm_vm_eval_define = {TSPECIAL, "*vm-eval-define*",0};
|
||
|
||
struct scm scm_vm_eval_set_x = {TSPECIAL, "*vm-eval-set!*",0};
|
||
struct scm scm_vm_eval_macro_expand_eval = {TSPECIAL, "*vm:eval-macro-expand-eval*",0};
|
||
struct scm scm_vm_eval_macro_expand_expand = {TSPECIAL, "*vm:eval-macro-expand-expand*",0};
|
||
struct scm scm_vm_eval_check_func = {TSPECIAL, "*vm-eval-check-func*",0};
|
||
struct scm scm_vm_eval2 = {TSPECIAL, "*vm-eval2*",0};
|
||
struct scm scm_vm_macro_expand = {TSPECIAL, "core:macro-expand",0};
|
||
struct scm scm_vm_macro_expand_define = {TSPECIAL, "*vm:core:macro-expand-define*",0};
|
||
struct scm scm_vm_macro_expand_define_macro = {TSPECIAL, "*vm:core:macro-expand-define-macro*",0};
|
||
struct scm scm_vm_macro_expand_lambda = {TSPECIAL, "*vm:core:macro-expand-lambda*",0};
|
||
struct scm scm_vm_macro_expand_set_x = {TSPECIAL, "*vm:core:macro-expand-set!*",0};
|
||
struct scm scm_vm_begin_expand_primitive_load = {TSPECIAL, "*vm:core:begin-expand-primitive-load*",0};
|
||
struct scm scm_vm_begin_primitive_load = {TSPECIAL, "*vm:core:begin-primitive-load*",0};
|
||
struct scm scm_vm_macro_expand_car = {TSPECIAL, "*vm:core:macro-expand-car*",0};
|
||
struct scm scm_vm_macro_expand_cdr = {TSPECIAL, "*vm:macro-expand-cdr*",0};
|
||
struct scm scm_vm_begin_expand = {TSPECIAL, "*vm:begin-expand*",0};
|
||
struct scm scm_vm_begin_expand_eval = {TSPECIAL, "*vm:begin-expand-eval*",0};
|
||
struct scm scm_vm_begin_expand_macro = {TSPECIAL, "*vm:begin-expand-macro*",0};
|
||
struct scm scm_vm_begin = {TSPECIAL, "*vm-begin*",0};
|
||
struct scm scm_vm_begin_read_input_file = {TSPECIAL, "*vm-begin-read-input-file*",0};
|
||
struct scm scm_vm_begin_eval = {TSPECIAL, "*vm:begin-eval*",0};
|
||
struct scm scm_vm_if = {TSPECIAL, "*vm-if*",0};
|
||
struct scm scm_vm_if_expr = {TSPECIAL, "*vm-if-expr*",0};
|
||
struct scm scm_vm_call_with_values2 = {TSPECIAL, "*vm-call-with-values2*",0};
|
||
struct scm scm_vm_call_with_current_continuation2 = {TSPECIAL, "*vm-call-with-current-continuation2*",0};
|
||
struct scm scm_vm_return = {TSPECIAL, "*vm-return*",0};
|
||
|
||
struct scm scm_symbol_gnuc = {TSYMBOL, "%gnuc",0};
|
||
struct scm scm_symbol_mesc = {TSYMBOL, "%mesc",0};
|
||
|
||
struct scm scm_test = {TSYMBOL, "test",0};
|
||
|
||
#if !_POSIX_SOURCE
|
||
#include "mes.mes.symbols.h"
|
||
#else
|
||
#include "mes.symbols.h"
|
||
#endif
|
||
|
||
SCM tmp;
|
||
SCM tmp_num;
|
||
SCM tmp_num2;
|
||
|
||
struct function g_functions[200];
|
||
int g_function = 0;
|
||
|
||
#if !__GNUC__ || !_POSIX_SOURCE
|
||
#include "gc.mes.h"
|
||
#include "lib.mes.h"
|
||
#include "math.mes.h"
|
||
#include "mes.mes.h"
|
||
#include "posix.mes.h"
|
||
#include "reader.mes.h"
|
||
#include "vector.mes.h"
|
||
#else
|
||
#include "gc.h"
|
||
#include "lib.h"
|
||
#include "math.h"
|
||
#include "mes.h"
|
||
#include "posix.h"
|
||
#include "reader.h"
|
||
#include "vector.h"
|
||
#endif
|
||
|
||
#define TYPE(x) g_cells[x].type
|
||
#define CAR(x) g_cells[x].car
|
||
#define CDR(x) g_cells[x].cdr
|
||
|
||
#define NTYPE(x) g_news[x].type
|
||
#define NCAR(x) g_news[x].car
|
||
#define NCDR(x) g_news[x].cdr
|
||
|
||
#if !_POSIX_SOURCE
|
||
#define LENGTH(x) g_cells[x].car
|
||
#define REF(x) g_cells[x].car
|
||
#define STRING(x) g_cells[x].car
|
||
|
||
#define CLOSURE(x) g_cells[x].cdr
|
||
#define CONTINUATION(x) g_cells[x].cdr
|
||
|
||
#define FUNCTION(x) g_functions[g_cells[x].cdr]
|
||
#define MACRO(x) g_cells[x].cdr
|
||
#define VALUE(x) g_cells[x].cdr
|
||
#define VECTOR(x) g_cells[x].cdr
|
||
|
||
#define NLENGTH(x) g_news[x].car
|
||
|
||
#define NVALUE(x) g_news[x].cdr
|
||
#define NVECTOR(x) g_news[x].cdr
|
||
|
||
#else
|
||
#define CONTINUATION(x) g_cells[x].cdr
|
||
#define HITS(x) g_cells[x].hits
|
||
#define LENGTH(x) g_cells[x].length
|
||
#define NAME(x) g_cells[x].name
|
||
#define STRING(x) g_cells[x].string
|
||
#define CLOSURE(x) g_cells[x].closure
|
||
#define MACRO(x) g_cells[x].macro
|
||
#define REF(x) g_cells[x].ref
|
||
#define VALUE(x) g_cells[x].value
|
||
#define VECTOR(x) g_cells[x].vector
|
||
#define FUNCTION(x) g_functions[g_cells[x].function]
|
||
|
||
#define NLENGTH(x) g_news[x].length
|
||
|
||
#define NVALUE(x) g_news[x].value
|
||
#define NVECTOR(x) g_news[x].vector
|
||
#endif
|
||
|
||
#define MAKE_CHAR(n) make_cell_ (tmp_num_ (TCHAR), 0, tmp_num2_ (n))
|
||
#define MAKE_CONTINUATION(n) make_cell_ (tmp_num_ (TCONTINUATION), n, g_stack)
|
||
#define MAKE_NUMBER(n) make_cell_ (tmp_num_ (TNUMBER), 0, tmp_num2_ (n))
|
||
#define MAKE_REF(n) make_cell_ (tmp_num_ (TREF), n, 0)
|
||
#define MAKE_STRING(x) make_cell_ (tmp_num_ (TSTRING), x, 0)
|
||
#define MAKE_KEYWORD(x) make_cell_ (tmp_num_ (TKEYWORD), x, 0)
|
||
#define MAKE_MACRO(name, x) make_cell_ (tmp_num_ (TMACRO), STRING (name), x)
|
||
|
||
#define CAAR(x) CAR (CAR (x))
|
||
#define CADR(x) CAR (CDR (x))
|
||
#define CDAR(x) CDR (CAR (x))
|
||
#define CDDR(x) CDR (CDR (x))
|
||
#define CADAR(x) CAR (CDR (CAR (x)))
|
||
#define CADDR(x) CAR (CDR (CDR (x)))
|
||
#define CDADAR(x) CAR (CDR (CAR (CDR (x))))
|
||
|
||
SCM
|
||
alloc (int n)
|
||
{
|
||
assert (g_free + n < ARENA_SIZE);
|
||
SCM x = g_free;
|
||
g_free += n;
|
||
return x;
|
||
}
|
||
|
||
SCM
|
||
tmp_num_ (int x)
|
||
{
|
||
VALUE (tmp_num) = x;
|
||
return tmp_num;
|
||
}
|
||
|
||
SCM
|
||
tmp_num2_ (int x)
|
||
{
|
||
VALUE (tmp_num2) = x;
|
||
return tmp_num2;
|
||
}
|
||
|
||
SCM
|
||
make_cell_ (SCM type, SCM car, SCM cdr)
|
||
{
|
||
SCM x = alloc (1);
|
||
assert (TYPE (type) == TNUMBER);
|
||
TYPE (x) = VALUE (type);
|
||
if (VALUE (type) == TCHAR || VALUE (type) == TNUMBER) {
|
||
if (car) CAR (x) = CAR (car);
|
||
if (cdr) CDR(x) = CDR(cdr);
|
||
}
|
||
else if (VALUE (type) == TFUNCTION) {
|
||
if (car) CAR (x) = car;
|
||
if (cdr) CDR(x) = CDR(cdr);
|
||
}
|
||
else {
|
||
CAR (x) = car;
|
||
CDR(x) = cdr;
|
||
}
|
||
return x;
|
||
}
|
||
|
||
SCM
|
||
make_symbol_ (SCM s) ///((internal))
|
||
{
|
||
VALUE (tmp_num) = TSYMBOL;
|
||
SCM x = make_cell_ (tmp_num, s, 0);
|
||
g_symbols = cons (x, g_symbols);
|
||
return x;
|
||
}
|
||
|
||
SCM
|
||
list_of_char_equal_p (SCM a, SCM b) ///((internal))
|
||
{
|
||
while (a != cell_nil && b != cell_nil && VALUE (CAR (a)) == VALUE (CAR (b))) {
|
||
assert (TYPE (CAR (a)) == TCHAR);
|
||
assert (TYPE (CAR (b)) == TCHAR);
|
||
a = CDR (a);
|
||
b = CDR (b);
|
||
}
|
||
return (a == cell_nil && b == cell_nil) ? cell_t : cell_f;
|
||
}
|
||
|
||
SCM
|
||
lookup_symbol_ (SCM s)
|
||
{
|
||
SCM x = g_symbols;
|
||
while (x) {
|
||
if (list_of_char_equal_p (STRING (CAR (x)), s) == cell_t) break;
|
||
x = CDR (x);
|
||
}
|
||
if (x) x = CAR (x);
|
||
if (!x) x = make_symbol_ (s);
|
||
return x;
|
||
}
|
||
|
||
SCM
|
||
type_ (SCM x)
|
||
{
|
||
return MAKE_NUMBER (TYPE (x));
|
||
}
|
||
|
||
SCM
|
||
car_ (SCM x)
|
||
{
|
||
return (TYPE (x) != TCONTINUATION
|
||
&& (TYPE (CAR (x)) == TPAIR // FIXME: this is weird
|
||
|| TYPE (CAR (x)) == TREF
|
||
|| TYPE (CAR (x)) == TSPECIAL
|
||
|| TYPE (CAR (x)) == TSYMBOL
|
||
|| TYPE (CAR (x)) == TSTRING)) ? CAR (x) : MAKE_NUMBER (CAR (x));
|
||
}
|
||
|
||
SCM
|
||
cdr_ (SCM x)
|
||
{
|
||
return (TYPE (CDR (x)) == TPAIR
|
||
|| TYPE (CDR (x)) == TREF
|
||
|| TYPE (CAR (x)) == TSPECIAL
|
||
|| TYPE (CDR (x)) == TSYMBOL
|
||
|| TYPE (CDR (x)) == TSTRING) ? CDR (x) : MAKE_NUMBER (CDR (x));
|
||
}
|
||
|
||
SCM
|
||
arity_ (SCM x)
|
||
{
|
||
assert (TYPE (x) == TFUNCTION);
|
||
return MAKE_NUMBER (FUNCTION (x).arity);
|
||
}
|
||
|
||
SCM
|
||
cons (SCM x, SCM y)
|
||
{
|
||
VALUE (tmp_num) = TPAIR;
|
||
return make_cell_ (tmp_num, x, y);
|
||
}
|
||
|
||
SCM
|
||
car (SCM x)
|
||
{
|
||
#if !__MESC_MES__
|
||
if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_symbol_car));
|
||
#endif
|
||
return CAR (x);
|
||
}
|
||
|
||
SCM
|
||
cdr (SCM x)
|
||
{
|
||
#if !__MESC_MES__
|
||
if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_symbol_cdr));
|
||
#endif
|
||
return CDR (x);
|
||
}
|
||
|
||
SCM
|
||
list (SCM x) ///((arity . n))
|
||
{
|
||
return x;
|
||
}
|
||
|
||
SCM
|
||
null_p (SCM x)
|
||
{
|
||
return x == cell_nil ? cell_t : cell_f;
|
||
}
|
||
|
||
SCM
|
||
eq_p (SCM x, SCM y)
|
||
{
|
||
return (x == y
|
||
|| ((TYPE (x) == TKEYWORD && TYPE (y) == TKEYWORD
|
||
&& STRING (x) == STRING (y)))
|
||
|| (TYPE (x) == TCHAR && TYPE (y) == TCHAR
|
||
&& VALUE (x) == VALUE (y))
|
||
|| (TYPE (x) == TNUMBER && TYPE (y) == TNUMBER
|
||
&& VALUE (x) == VALUE (y)))
|
||
? cell_t : cell_f;
|
||
}
|
||
|
||
SCM
|
||
values (SCM x) ///((arity . n))
|
||
{
|
||
SCM v = cons (0, x);
|
||
TYPE (v) = TVALUES;
|
||
return v;
|
||
}
|
||
|
||
SCM
|
||
acons (SCM key, SCM value, SCM alist)
|
||
{
|
||
return cons (cons (key, value), alist);
|
||
}
|
||
|
||
SCM
|
||
length (SCM x)
|
||
{
|
||
int n = 0;
|
||
while (x != cell_nil)
|
||
{
|
||
n++;
|
||
if (TYPE (x) != TPAIR) return MAKE_NUMBER (-1);
|
||
x = CDR (x);
|
||
}
|
||
return MAKE_NUMBER (n);
|
||
}
|
||
|
||
SCM apply (SCM, SCM, SCM);
|
||
|
||
SCM
|
||
error (SCM key, SCM x)
|
||
{
|
||
#if !__MESC_MES__
|
||
SCM throw;
|
||
if ((throw = assq_ref_env (cell_symbol_throw, r0)) != cell_undefined)
|
||
return apply (throw, cons (key, cons (x, cell_nil)), r0);
|
||
#endif
|
||
display_error_ (key);
|
||
eputs (": ");
|
||
write_error_ (x);
|
||
eputs ("\n");
|
||
exit (1);
|
||
}
|
||
|
||
SCM
|
||
cstring_to_list (char const* s)
|
||
{
|
||
SCM p = cell_nil;
|
||
int i = strlen (s);
|
||
while (i--)
|
||
p = cons (MAKE_CHAR (s[i]), p);
|
||
return p;
|
||
}
|
||
|
||
// extra lib
|
||
SCM
|
||
assert_defined (SCM x, SCM e) ///((internal))
|
||
{
|
||
if (e == cell_undefined) return error (cell_symbol_unbound_variable, x);
|
||
return e;
|
||
}
|
||
|
||
SCM
|
||
check_formals (SCM f, SCM formals, SCM args) ///((internal))
|
||
{
|
||
int flen = (TYPE (formals) == TNUMBER) ? VALUE (formals) : VALUE (length (formals));
|
||
int alen = VALUE (length (args));
|
||
if (alen != flen && alen != -1 && flen != -1)
|
||
{
|
||
char *s = "apply: wrong number of arguments; expected: ";
|
||
eputs (s);
|
||
eputs (itoa (flen));
|
||
eputs (", got: ");
|
||
eputs (itoa (alen));
|
||
eputs ("\n");
|
||
display_error_ (f);
|
||
SCM e = MAKE_STRING (cstring_to_list (s));
|
||
return error (cell_symbol_wrong_number_of_args, cons (e, f));
|
||
}
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
check_apply (SCM f, SCM e) ///((internal))
|
||
{
|
||
char* type = 0;
|
||
if (f == cell_f || f == cell_t) type = "bool";
|
||
if (f == cell_nil) type = "nil";
|
||
if (f == cell_unspecified) type = "*unspecified*";
|
||
if (f == cell_undefined) type = "*undefined*";
|
||
if (TYPE (f) == TCHAR) type = "char";
|
||
if (TYPE (f) == TNUMBER) type = "number";
|
||
if (TYPE (f) == TSTRING) type = "string";
|
||
|
||
if (type)
|
||
{
|
||
char *s = "cannot apply: ";
|
||
eputs (s);
|
||
eputs (type);
|
||
eputs ("[");
|
||
write_error_ (e);
|
||
eputs ("]\n");
|
||
SCM e = MAKE_STRING (cstring_to_list (s));
|
||
return error (cell_symbol_wrong_type_arg, cons (e, f));
|
||
}
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
gc_push_frame () ///((internal))
|
||
{
|
||
SCM frame = cons (r1, cons (r2, cons (r3, cons (r0, cell_nil))));
|
||
g_stack = cons (frame, g_stack);
|
||
return g_stack;
|
||
}
|
||
|
||
SCM
|
||
append2 (SCM x, SCM y)
|
||
{
|
||
if (x == cell_nil) return y;
|
||
if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_append2));
|
||
return cons (car (x), append2 (cdr (x), y));
|
||
}
|
||
|
||
SCM
|
||
pairlis (SCM x, SCM y, SCM a)
|
||
{
|
||
if (x == cell_nil)
|
||
return a;
|
||
if (TYPE (x) != TPAIR)
|
||
return cons (cons (x, y), a);
|
||
return cons (cons (car (x), car (y)),
|
||
pairlis (cdr (x), cdr (y), a));
|
||
}
|
||
|
||
SCM
|
||
call (SCM fn, SCM x)
|
||
{
|
||
if ((FUNCTION (fn).arity > 0 || FUNCTION (fn).arity == -1)
|
||
&& x != cell_nil && TYPE (CAR (x)) == TVALUES)
|
||
x = cons (CADAR (x), CDR (x));
|
||
if ((FUNCTION (fn).arity > 1 || FUNCTION (fn).arity == -1)
|
||
&& x != cell_nil && TYPE (CDR (x)) == TPAIR && TYPE (CADR (x)) == TVALUES)
|
||
x = cons (CAR (x), cons (CDADAR (x), CDR (x)));
|
||
switch (FUNCTION (fn).arity)
|
||
{
|
||
#if __MESC__ || !_POSIX_SOURCE
|
||
case 0: return (FUNCTION (fn).function) ();
|
||
case 1: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (CAR (x));
|
||
case 2: return ((SCM(*)(SCM,SCM))(FUNCTION (fn).function)) (CAR (x), CADR (x));
|
||
case 3: return ((SCM(*)(SCM,SCM,SCM))(FUNCTION (fn).function)) (CAR (x), CADR (x), CAR (CDDR (x)));
|
||
case -1: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);
|
||
default: return ((SCM(*)(SCM))(FUNCTION (fn).function)) (x);
|
||
#else
|
||
case 0: return FUNCTION (fn).function0 ();
|
||
case 1: return FUNCTION (fn).function1 (CAR (x));
|
||
case 2: return FUNCTION (fn).function2 (CAR (x), CADR (x));
|
||
case 3: return FUNCTION (fn).function3 (CAR (x), CADR (x), CAR (CDDR (x)));
|
||
case -1: return FUNCTION (fn).functionn (x);
|
||
#endif
|
||
}
|
||
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
assq (SCM x, SCM a)
|
||
{
|
||
switch (TYPE (x))
|
||
{
|
||
case TCHAR:
|
||
case TNUMBER:
|
||
{
|
||
SCM v = VALUE (x);
|
||
while (a != cell_nil && v != VALUE (CAAR (a))) a = CDR (a); break;
|
||
}
|
||
case TKEYWORD:
|
||
{
|
||
SCM v = STRING (x);
|
||
while (a != cell_nil && v != STRING (CAAR (a))) a = CDR (a); break;
|
||
}
|
||
// case TSYMBOL:
|
||
// case TSPECIAL:
|
||
default:
|
||
while (a != cell_nil && x != CAAR (a)) a = CDR (a); break;
|
||
}
|
||
return a != cell_nil ? CAR (a) : cell_f;
|
||
}
|
||
|
||
SCM
|
||
assq_ref_env (SCM x, SCM a)
|
||
{
|
||
x = assq (x, a);
|
||
if (x == cell_f) return cell_undefined;
|
||
return CDR (x);
|
||
}
|
||
|
||
SCM
|
||
set_car_x (SCM x, SCM e)
|
||
{
|
||
if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_set_car_x));
|
||
CAR (x) = e;
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
set_cdr_x (SCM x, SCM e)
|
||
{
|
||
if (TYPE (x) != TPAIR) error (cell_symbol_not_a_pair, cons (x, cell_set_cdr_x));
|
||
CDR (x) = e;
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
set_env_x (SCM x, SCM e, SCM a)
|
||
{
|
||
SCM p = assert_defined (x, assq (x, a));
|
||
if (TYPE (p) != TPAIR) error (cell_symbol_not_a_pair, cons (p, x));
|
||
return set_cdr_x (p, e);
|
||
}
|
||
|
||
SCM
|
||
call_lambda (SCM e, SCM x, SCM aa, SCM a) ///((internal))
|
||
{
|
||
SCM cl = cons (cons (cell_closure, x), x);
|
||
r1 = e;
|
||
r0 = cl;
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
make_closure_ (SCM args, SCM body, SCM a) ///((internal))
|
||
{
|
||
return make_cell_ (tmp_num_ (TCLOSURE), cell_f, cons (cons (cell_circular, a), cons (args, body)));
|
||
}
|
||
|
||
SCM
|
||
lookup_macro_ (SCM x, SCM a) ///((internal))
|
||
{
|
||
if (TYPE (x) != TSYMBOL) return cell_f;
|
||
SCM m = assq_ref_env (x, a);
|
||
if (TYPE (m) == TMACRO) return MACRO (m);
|
||
return cell_f;
|
||
}
|
||
|
||
SCM
|
||
push_cc (SCM p1, SCM p2, SCM a, SCM c) ///((internal))
|
||
{
|
||
SCM x = r3;
|
||
r3 = c;
|
||
r2 = p2;
|
||
gc_push_frame ();
|
||
r1 = p1;
|
||
r0 = a;
|
||
r3 = x;
|
||
return cell_unspecified;
|
||
}
|
||
|
||
SCM
|
||
gc_peek_frame () ///((internal))
|
||
{
|
||
SCM frame = CAR (g_stack);
|
||
r1 = CAR (frame);
|
||
r2 = CADR (frame);
|
||
r3 = CAR (CDDR (frame));
|
||
r0 = CADR (CDDR (frame));
|
||
return frame;
|
||
}
|
||
|
||
SCM
|
||
gc_pop_frame () ///((internal))
|
||
{
|
||
SCM frame = gc_peek_frame (g_stack);
|
||
g_stack = CDR (g_stack);
|
||
return frame;
|
||
}
|
||
|
||
SCM
|
||
eval_apply ()
|
||
{
|
||
int expanding_p = 0;
|
||
eval_apply:
|
||
gc_check ();
|
||
switch (r3)
|
||
{
|
||
case cell_vm_evlis: goto evlis;
|
||
case cell_vm_evlis2: goto evlis2;
|
||
case cell_vm_evlis3: goto evlis3;
|
||
case cell_vm_apply: goto apply;
|
||
case cell_vm_apply2: goto apply2;
|
||
case cell_vm_eval: goto eval;
|
||
#if MES_FIXED_PRIMITIVES
|
||
case cell_vm_eval_car: goto eval_car;
|
||
case cell_vm_eval_cdr: goto eval_cdr;
|
||
case cell_vm_eval_cons: goto eval_cons;
|
||
case cell_vm_eval_null_p: goto eval_null_p;
|
||
#endif
|
||
case cell_vm_eval_define: goto eval_define;
|
||
case cell_vm_eval_set_x: goto eval_set_x;
|
||
case cell_vm_eval_macro_expand_eval: goto eval_macro_expand_eval;
|
||
case cell_vm_eval_macro_expand_expand: goto eval_macro_expand_expand;
|
||
case cell_vm_eval_check_func: goto eval_check_func;
|
||
case cell_vm_eval2: goto eval2;
|
||
case cell_vm_macro_expand: goto macro_expand;
|
||
case cell_vm_macro_expand_define: goto macro_expand_define;
|
||
case cell_vm_macro_expand_define_macro: goto macro_expand_define_macro;
|
||
case cell_vm_macro_expand_lambda: goto macro_expand_lambda;
|
||
case cell_vm_macro_expand_set_x: goto macro_expand_set_x;
|
||
case cell_vm_macro_expand_car: goto macro_expand_car;
|
||
case cell_vm_macro_expand_cdr: goto macro_expand_cdr;
|
||
case cell_vm_begin: goto begin;
|
||
case cell_vm_begin_eval: goto begin_eval;
|
||
case cell_vm_begin_primitive_load: goto begin_primitive_load;
|
||
case cell_vm_begin_expand: goto begin_expand;
|
||
case cell_vm_begin_expand_eval: goto begin_expand_eval;
|
||
case cell_vm_begin_expand_macro: goto begin_expand_macro;
|
||
case cell_vm_begin_expand_primitive_load: goto begin_expand_primitive_load;
|
||
case cell_vm_if: goto vm_if;
|
||
case cell_vm_if_expr: goto if_expr;
|
||
case cell_vm_call_with_current_continuation2: goto call_with_current_continuation2;
|
||
case cell_vm_call_with_values2: goto call_with_values2;
|
||
case cell_vm_return: goto vm_return;
|
||
case cell_unspecified: return r1;
|
||
default:
|
||
assert (0);
|
||
}
|
||
|
||
SCM x = cell_nil;
|
||
evlis:
|
||
gc_check ();
|
||
if (r1 == cell_nil) goto vm_return;
|
||
if (TYPE (r1) != TPAIR) goto eval;
|
||
push_cc (CAR (r1), r1, r0, cell_vm_evlis2);
|
||
goto eval;
|
||
evlis2:
|
||
push_cc (CDR (r2), r1, r0, cell_vm_evlis3);
|
||
goto evlis;
|
||
evlis3:
|
||
r1 = cons (r2, r1);
|
||
goto vm_return;
|
||
|
||
apply:
|
||
gc_check ();
|
||
switch (TYPE (CAR (r1)))
|
||
{
|
||
case TFUNCTION: {
|
||
check_formals (CAR (r1), MAKE_NUMBER (FUNCTION (CAR (r1)).arity), CDR (r1));
|
||
r1 = call (CAR (r1), CDR (r1)); /// FIXME: move into eval_apply
|
||
goto vm_return;
|
||
}
|
||
case TCLOSURE:
|
||
{
|
||
SCM cl = CLOSURE (CAR (r1));
|
||
SCM formals = CADR (cl);
|
||
SCM body = CDDR (cl);
|
||
SCM aa = CDAR (cl);
|
||
aa = CDR (aa);
|
||
check_formals (CAR (r1), formals, CDR (r1));
|
||
SCM p = pairlis (formals, CDR (r1), aa);
|
||
call_lambda (body, p, aa, r0);
|
||
goto begin;
|
||
}
|
||
case TCONTINUATION:
|
||
{
|
||
x = r1;
|
||
g_stack = CONTINUATION (CAR (r1));
|
||
gc_pop_frame ();
|
||
r1 = CADR (x);
|
||
goto eval_apply;
|
||
}
|
||
case TSPECIAL:
|
||
{
|
||
switch (CAR (r1))
|
||
{
|
||
case cell_vm_apply:
|
||
{
|
||
push_cc (cons (CADR (r1), CADDR (r1)), r1, r0, cell_vm_return);
|
||
goto apply;
|
||
}
|
||
case cell_vm_eval:
|
||
{
|
||
push_cc (CADR (r1), r1, CADDR (r1), cell_vm_return);
|
||
goto eval;
|
||
}
|
||
case cell_call_with_current_continuation:
|
||
{
|
||
r1 = CDR (r1);
|
||
goto call_with_current_continuation;
|
||
}
|
||
default: check_apply (cell_f, CAR (r1));
|
||
}
|
||
}
|
||
case TSYMBOL:
|
||
{
|
||
if (CAR (r1) == cell_symbol_call_with_values)
|
||
{
|
||
r1 = CDR (r1);
|
||
goto call_with_values;
|
||
}
|
||
if (CAR (r1) == cell_symbol_current_module)
|
||
{
|
||
r1 = r0;
|
||
goto vm_return;
|
||
}
|
||
break;
|
||
}
|
||
case TPAIR:
|
||
{
|
||
switch (CAAR (r1))
|
||
{
|
||
case cell_symbol_lambda:
|
||
{
|
||
SCM formals = CADR (CAR (r1));
|
||
SCM body = CDDR (CAR (r1));
|
||
SCM p = pairlis (formals, CDR (r1), r0);
|
||
check_formals (r1, formals, CDR (r1));
|
||
call_lambda (body, p, p, r0);
|
||
goto begin;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
push_cc (CAR (r1), r1, r0, cell_vm_apply2);
|
||
goto eval;
|
||
apply2:
|
||
check_apply (r1, CAR (r2));
|
||
r1 = cons (r1, CDR (r2));
|
||
goto apply;
|
||
|
||
eval:
|
||
gc_check ();
|
||
switch (TYPE (r1))
|
||
{
|
||
case TPAIR:
|
||
{
|
||
switch (CAR (r1))
|
||
{
|
||
#if MES_FIXED_PRIMITIVES
|
||
case cell_symbol_car:
|
||
{
|
||
push_cc (CADR (r1), r1, r0, cell_vm_eval_car); goto eval;
|
||
eval_car:
|
||
x = r1; gc_pop_frame (); r1 = CAR (x); goto eval_apply;
|
||
}
|
||
case cell_symbol_cdr:
|
||
{
|
||
push_cc (CADR (r1), r1, r0, cell_vm_eval_cdr); goto eval;
|
||
eval_cdr:
|
||
x = r1; gc_pop_frame (); r1 = CDR (x); goto eval_apply;
|
||
}
|
||
case cell_symbol_cons: {
|
||
push_cc (CDR (r1), r1, r0, cell_vm_eval_cons); goto evlis;
|
||
eval_cons:
|
||
x = r1;
|
||
gc_pop_frame ();
|
||
r1 = cons (CAR (x), CADR (x));
|
||
goto eval_apply;
|
||
}
|
||
case cell_symbol_null_p:
|
||
{
|
||
push_cc (CADR (r1), r1, r0, cell_vm_eval_null_p);
|
||
goto eval;
|
||
eval_null_p:
|
||
x = r1; gc_pop_frame (); r1 = null_p (x); goto eval_apply;
|
||
}
|
||
#else
|
||
eval_car:;
|
||
eval_cdr:;
|
||
eval_cons:;
|
||
eval_null_p:;
|
||
|
||
#endif // MES_FIXED_PRIMITIVES
|
||
case cell_symbol_quote:
|
||
{
|
||
x = r1; gc_pop_frame (); r1 = CADR (x); goto eval_apply;
|
||
}
|
||
case cell_symbol_begin: goto begin;
|
||
case cell_symbol_lambda:
|
||
{
|
||
r1 = make_closure_ (CADR (r1), CDDR (r1), assq (cell_closure, r0));
|
||
goto vm_return;
|
||
}
|
||
case cell_symbol_if: {r1=CDR (r1); goto vm_if;}
|
||
case cell_symbol_set_x:
|
||
{
|
||
push_cc (CAR (CDDR (r1)), r1, r0, cell_vm_eval_set_x);
|
||
goto eval;
|
||
eval_set_x:
|
||
x = r2;
|
||
r1 = set_env_x (CADR (x), r1, r0);
|
||
goto vm_return;
|
||
}
|
||
case cell_vm_macro_expand:
|
||
{
|
||
push_cc (CADR (r1), r1, r0, cell_vm_eval_macro_expand_eval);
|
||
goto eval;
|
||
eval_macro_expand_eval:
|
||
push_cc (r1, r2, r0, cell_vm_eval_macro_expand_expand);
|
||
expanding_p++;
|
||
goto macro_expand;
|
||
eval_macro_expand_expand:
|
||
expanding_p--;
|
||
goto vm_return;
|
||
}
|
||
default:
|
||
{
|
||
if (TYPE (r1) == TPAIR
|
||
&& (CAR (r1) == cell_symbol_define
|
||
|| CAR (r1) == cell_symbol_define_macro))
|
||
{
|
||
r2 = r1;
|
||
if (TYPE (CADR (r1)) != TPAIR)
|
||
{
|
||
push_cc (CAR (CDDR (r1)), r2, cons (cons (CADR (r1), CADR (r1)), r0), cell_vm_eval_define);
|
||
goto eval;
|
||
}
|
||
else
|
||
{
|
||
SCM p = pairlis (CADR (r1), CADR (r1), r0);
|
||
SCM args = CDR (CADR (r1));
|
||
SCM body = CDDR (r1);
|
||
r1 = cons (cell_symbol_lambda, cons (args, body));
|
||
push_cc (r1, r2, p, cell_vm_eval_define);
|
||
goto eval;
|
||
}
|
||
eval_define:;
|
||
SCM name = CADR (r2);
|
||
if (TYPE (CADR (r2)) == TPAIR) name = CAR (name);
|
||
if (CAR (r2) == cell_symbol_define_macro)
|
||
r1 = MAKE_MACRO (name, r1);
|
||
SCM entry = cons (name, r1);
|
||
SCM aa = cons (entry, cell_nil);
|
||
set_cdr_x (aa, cdr (r0));
|
||
set_cdr_x (r0, aa);
|
||
SCM cl = assq (cell_closure, r0);
|
||
set_cdr_x (cl, aa);
|
||
//r1 = entry;
|
||
r1 = cell_unspecified;
|
||
goto vm_return;
|
||
}
|
||
push_cc (CAR (r1), r1, r0, cell_vm_eval_check_func); goto eval;
|
||
eval_check_func:
|
||
push_cc (CDR (r2), r2, r0, cell_vm_eval2); goto evlis;
|
||
eval2:
|
||
r1 = cons (CAR (r2), r1);
|
||
goto apply;
|
||
}
|
||
}
|
||
}
|
||
case TSYMBOL:
|
||
{
|
||
r1 = assert_defined (r1, assq_ref_env (r1, r0));
|
||
goto vm_return;
|
||
}
|
||
default: goto vm_return;
|
||
}
|
||
|
||
macro_expand:
|
||
{
|
||
SCM macro;
|
||
SCM expanders;
|
||
|
||
if (TYPE (r1) != TPAIR || CAR (r1) == cell_symbol_quote)
|
||
goto vm_return;
|
||
|
||
if (TYPE (r1) == TPAIR
|
||
&& (macro = lookup_macro_ (CAR (r1), r0)) != cell_f)
|
||
{
|
||
r1 = cons (macro, CDR (r1));
|
||
push_cc (r1, cell_nil, r0, cell_vm_macro_expand);
|
||
goto apply;
|
||
}
|
||
if (CAR (r1) == cell_symbol_define
|
||
|| CAR (r1) == cell_symbol_define_macro)
|
||
{
|
||
push_cc (CDDR (r1), r1, r0, cell_vm_macro_expand_define);
|
||
goto macro_expand;
|
||
macro_expand_define:
|
||
CDDR (r2) = r1;
|
||
r1 = r2;
|
||
if (CAR (r1) == cell_symbol_define_macro)
|
||
{
|
||
push_cc (r1, r1, r0, cell_vm_macro_expand_define_macro);
|
||
goto eval;
|
||
macro_expand_define_macro:
|
||
r1 = r2;
|
||
}
|
||
goto vm_return;
|
||
}
|
||
|
||
if (CAR (r1) == cell_symbol_lambda)
|
||
{
|
||
push_cc (CDDR (r1), r1, r0, cell_vm_macro_expand_lambda);
|
||
goto macro_expand;
|
||
macro_expand_lambda:
|
||
CDDR (r2) = r1;
|
||
r1 = r2;
|
||
goto vm_return;
|
||
}
|
||
|
||
if (CAR (r1) == cell_symbol_set_x)
|
||
{
|
||
push_cc (CDDR (r1), r1, r0, cell_vm_macro_expand_set_x);
|
||
goto macro_expand;
|
||
macro_expand_set_x:
|
||
CDDR (r2) = r1;
|
||
r1 = r2;
|
||
goto vm_return;
|
||
}
|
||
|
||
if (TYPE (r1) == TPAIR
|
||
&& TYPE (CAR (r1)) == TSYMBOL
|
||
&& CAR (r1) != cell_symbol_begin
|
||
&& ((expanders = assq_ref_env (cell_symbol_sc_expander_alist, r0)) != cell_undefined)
|
||
&& ((macro = assq (CAR (r1), expanders)) != cell_f))
|
||
{
|
||
SCM sc_expand = assq_ref_env (cell_symbol_macro_expand, r0);
|
||
r2 = r1;
|
||
if (sc_expand != cell_undefined && sc_expand != cell_f)
|
||
{
|
||
r1 = cons (sc_expand, cons (r1, cell_nil));
|
||
goto apply;
|
||
}
|
||
}
|
||
|
||
push_cc (CAR (r1), r1, r0, cell_vm_macro_expand_car);
|
||
goto macro_expand;
|
||
|
||
macro_expand_car:
|
||
CAR (r2) = r1;
|
||
r1 = r2;
|
||
if (CDR (r1) == cell_nil)
|
||
goto vm_return;
|
||
|
||
push_cc (CDR (r1), r1, r0, cell_vm_macro_expand_cdr);
|
||
goto macro_expand;
|
||
|
||
macro_expand_cdr:
|
||
CDR (r2) = r1;
|
||
r1 = r2;
|
||
|
||
goto vm_return;
|
||
}
|
||
|
||
begin:
|
||
x = cell_unspecified;
|
||
while (r1 != cell_nil)
|
||
{
|
||
gc_check ();
|
||
if (TYPE (r1) == TPAIR)
|
||
{
|
||
if (CAAR (r1) == cell_symbol_primitive_load)
|
||
{
|
||
SCM program = cons (CAR (r1), cell_nil);
|
||
push_cc (program, r1, r0, cell_vm_begin_primitive_load);
|
||
goto begin_expand;
|
||
begin_primitive_load:
|
||
CAR (r2) = r1;
|
||
r1 = r2;
|
||
}
|
||
}
|
||
|
||
if (TYPE (r1) == TPAIR && TYPE (CAR (r1)) == TPAIR)
|
||
{
|
||
if (CAAR (r1) == cell_symbol_begin)
|
||
r1 = append2 (CDAR (r1), CDR (r1));
|
||
}
|
||
if (CDR (r1) == cell_nil)
|
||
{
|
||
r1 = CAR (r1);
|
||
goto eval;
|
||
}
|
||
push_cc (CAR (r1), r1, r0, cell_vm_begin_eval);
|
||
goto eval;
|
||
begin_eval:
|
||
x = r1;
|
||
r1 = CDR (r2);
|
||
}
|
||
r1 = x;
|
||
goto vm_return;
|
||
|
||
|
||
begin_expand:
|
||
x = cell_unspecified;
|
||
while (r1 != cell_nil)
|
||
{
|
||
gc_check ();
|
||
|
||
if (TYPE (r1) == TPAIR)
|
||
{
|
||
if (TYPE (CAR (r1)) == TPAIR && CAAR (r1) == cell_symbol_begin)
|
||
r1 = append2 (CDAR (r1), CDR (r1));
|
||
if (CAAR (r1) == cell_symbol_primitive_load)
|
||
{
|
||
push_cc (CADR (CAR (r1)), r1, r0, cell_vm_begin_expand_primitive_load);
|
||
goto eval; // FIXME: expand too?!
|
||
begin_expand_primitive_load:;
|
||
SCM input; // = current_input_port ();
|
||
if (TYPE (r1) == TNUMBER && VALUE (r1) == 0)
|
||
;
|
||
else if (TYPE (r1) == TSTRING)
|
||
input = set_current_input_port (open_input_file (r1));
|
||
else
|
||
assert (0);
|
||
|
||
push_cc (input, r2, r0, cell_vm_return);
|
||
x = read_input_file_env (r0);
|
||
gc_pop_frame ();
|
||
input = r1;
|
||
r1 = x;
|
||
set_current_input_port (input);
|
||
r1 = cons (cell_symbol_begin, r1);
|
||
CAR (r2) = r1;
|
||
r1 = r2;
|
||
continue;
|
||
}
|
||
}
|
||
|
||
push_cc (CAR (r1), r1, r0, cell_vm_begin_expand_macro);
|
||
expanding_p++;
|
||
goto macro_expand;
|
||
begin_expand_macro:
|
||
expanding_p--;
|
||
if (r1 != CAR (r2))
|
||
{
|
||
CAR (r2) = r1;
|
||
r1 = r2;
|
||
continue;
|
||
}
|
||
r1 = r2;
|
||
|
||
push_cc (CAR (r1), r1, r0, cell_vm_begin_expand_eval);
|
||
goto eval;
|
||
begin_expand_eval:
|
||
x = r1;
|
||
r1 = CDR (r2);
|
||
}
|
||
r1 = x;
|
||
goto vm_return;
|
||
|
||
vm_if:
|
||
push_cc (CAR (r1), r1, r0, cell_vm_if_expr);
|
||
goto eval;
|
||
if_expr:
|
||
x = r1;
|
||
r1 = r2;
|
||
if (x != cell_f)
|
||
{
|
||
r1 = CADR (r1);
|
||
goto eval;
|
||
}
|
||
if (CDDR (r1) != cell_nil)
|
||
{
|
||
r1 = CAR (CDDR (r1));
|
||
goto eval;
|
||
}
|
||
r1 = cell_unspecified;
|
||
goto vm_return;
|
||
|
||
call_with_current_continuation:
|
||
gc_push_frame ();
|
||
x = MAKE_CONTINUATION (g_continuations++);
|
||
gc_pop_frame ();
|
||
push_cc (cons (CAR (r1), cons (x, cell_nil)), x, r0, cell_vm_call_with_current_continuation2);
|
||
goto apply;
|
||
call_with_current_continuation2:
|
||
CONTINUATION (r2) = g_stack;
|
||
goto vm_return;
|
||
|
||
call_with_values:
|
||
push_cc (cons (CAR (r1), cell_nil), r1, r0, cell_vm_call_with_values2);
|
||
goto apply;
|
||
call_with_values2:
|
||
if (TYPE (r1) == TVALUES)
|
||
r1 = CDR (r1);
|
||
r1 = cons (CADR (r2), r1);
|
||
goto apply;
|
||
|
||
vm_return:
|
||
x = r1;
|
||
gc_pop_frame ();
|
||
r1 = x;
|
||
goto eval_apply;
|
||
}
|
||
|
||
SCM
|
||
apply (SCM f, SCM x, SCM a) ///((internal))
|
||
{
|
||
push_cc (cons (f, x), cell_unspecified, r0, cell_unspecified);
|
||
r3 = cell_vm_apply;
|
||
return eval_apply ();
|
||
}
|
||
|
||
SCM
|
||
mes_g_stack (SCM a) ///((internal))
|
||
{
|
||
r0 = a;
|
||
r1 = MAKE_CHAR (0);
|
||
r2 = MAKE_CHAR (0);
|
||
r3 = MAKE_CHAR (0);
|
||
g_stack = cons (cell_nil, cell_nil);
|
||
return r0;
|
||
}
|
||
|
||
// Environment setup
|
||
|
||
SCM
|
||
make_tmps (struct scm* cells)
|
||
{
|
||
tmp = g_free++;
|
||
cells[tmp].type = TCHAR;
|
||
tmp_num = g_free++;
|
||
cells[tmp_num].type = TNUMBER;
|
||
tmp_num2 = g_free++;
|
||
cells[tmp_num2].type = TNUMBER;
|
||
return 0;
|
||
}
|
||
|
||
#include "posix.c"
|
||
#include "math.c"
|
||
#include "lib.c"
|
||
|
||
// Jam Collector
|
||
SCM g_symbol_max;
|
||
|
||
SCM
|
||
gc_init_cells () ///((internal))
|
||
{
|
||
g_cells = (struct scm *)malloc (2*ARENA_SIZE*sizeof (struct scm));
|
||
|
||
TYPE (0) = TVECTOR;
|
||
LENGTH (0) = 1000;
|
||
VECTOR (0) = 0;
|
||
#if __MESC__
|
||
g_cells += sizeof (struct scm);
|
||
#else
|
||
g_cells++;
|
||
#endif
|
||
TYPE (0) = TCHAR;
|
||
VALUE (0) = 'c';
|
||
return 0;
|
||
}
|
||
|
||
SCM
|
||
gc_init_news () ///((internal))
|
||
{
|
||
#if __MESC__
|
||
char *p = g_cells;
|
||
p -= sizeof (struct scm);
|
||
p += ARENA_SIZE * sizeof (struct scm);
|
||
g_news = p;
|
||
#else
|
||
g_news = g_cells-1 + ARENA_SIZE;
|
||
#endif
|
||
|
||
NTYPE (0) = TVECTOR;
|
||
NLENGTH (0) = 1000;
|
||
NVECTOR (0) = 0;
|
||
#if __MESC__
|
||
g_news += sizeof (struct scm);
|
||
#else
|
||
g_news++;
|
||
#endif
|
||
NTYPE (0) = TCHAR;
|
||
NVALUE (0) = 'n';
|
||
return 0;
|
||
}
|
||
|
||
SCM
|
||
mes_symbols () ///((internal))
|
||
{
|
||
gc_init_cells ();
|
||
gc_init_news ();
|
||
|
||
#if !_POSIX_SOURCE
|
||
#include "mes.mes.symbols.i"
|
||
#else
|
||
#include "mes.symbols.i"
|
||
#endif
|
||
|
||
g_symbol_max = g_free;
|
||
make_tmps (g_cells);
|
||
|
||
g_symbols = 0;
|
||
for (int i=1; i<g_symbol_max; i++)
|
||
g_symbols = cons (i, g_symbols);
|
||
|
||
SCM a = cell_nil;
|
||
|
||
#if !_POSIX_SOURCE
|
||
#include "mes.mes.symbol-names.i"
|
||
#else
|
||
#include "mes.symbol-names.i"
|
||
#endif
|
||
|
||
a = acons (cell_symbol_mes_version, MAKE_STRING (cstring_to_list (VERSION)), a);
|
||
a = acons (cell_symbol_mes_prefix, MAKE_STRING (cstring_to_list (PREFIX)), a);
|
||
|
||
a = acons (cell_symbol_dot, cell_dot, a);
|
||
a = acons (cell_symbol_begin, cell_begin, a);
|
||
a = acons (cell_symbol_call_with_values, cell_symbol_call_with_values, a);
|
||
a = acons (cell_symbol_current_module, cell_symbol_current_module, a);
|
||
a = acons (cell_symbol_call_with_current_continuation, cell_call_with_current_continuation, a);
|
||
a = acons (cell_symbol_sc_expand, cell_f, a);
|
||
|
||
#if __GNUC__
|
||
a = acons (cell_symbol_gnuc, cell_t, a);
|
||
a = acons (cell_symbol_mesc, cell_f, a);
|
||
#else
|
||
a = acons (cell_symbol_gnuc, cell_f, a);
|
||
a = acons (cell_symbol_mesc, cell_t, a);
|
||
#endif
|
||
a = acons (cell_closure, a, a);
|
||
|
||
return a;
|
||
}
|
||
|
||
SCM
|
||
mes_environment () ///((internal))
|
||
{
|
||
SCM a = mes_symbols ();
|
||
return mes_g_stack (a);
|
||
}
|
||
|
||
SCM
|
||
mes_builtins (SCM a) ///((internal))
|
||
{
|
||
#if !__GNUC__ || !_POSIX_SOURCE
|
||
#include "mes.mes.i"
|
||
|
||
// Do not sort: Order of these includes define builtins
|
||
#include "posix.mes.i"
|
||
#include "math.mes.i"
|
||
#include "lib.mes.i"
|
||
#include "vector.mes.i"
|
||
#include "gc.mes.i"
|
||
#include "reader.mes.i"
|
||
|
||
#include "gc.mes.environment.i"
|
||
#include "lib.mes.environment.i"
|
||
#include "math.mes.environment.i"
|
||
#include "mes.mes.environment.i"
|
||
#include "posix.mes.environment.i"
|
||
#include "reader.mes.environment.i"
|
||
#include "vector.mes.environment.i"
|
||
#else
|
||
#include "mes.i"
|
||
|
||
// Do not sort: Order of these includes define builtins
|
||
#include "posix.i"
|
||
#include "math.i"
|
||
#include "lib.i"
|
||
#include "vector.i"
|
||
#include "gc.i"
|
||
#include "reader.i"
|
||
|
||
#include "gc.environment.i"
|
||
#include "lib.environment.i"
|
||
#include "math.environment.i"
|
||
#include "mes.environment.i"
|
||
#include "posix.environment.i"
|
||
#include "reader.environment.i"
|
||
#include "vector.environment.i"
|
||
#endif
|
||
|
||
if (g_debug > 1)
|
||
{
|
||
fputs ("functions: ", STDERR);
|
||
fputs (itoa (g_function), STDERR);
|
||
fputs ("\n", STDERR);
|
||
for (int i = 0; i < g_function; i++)
|
||
{
|
||
fputs ("[", STDERR);
|
||
fputs (itoa (i), STDERR);
|
||
fputs ("]: ", STDERR);
|
||
fputs (g_functions[i].name, STDERR);
|
||
fputs ("\n", STDERR);
|
||
}
|
||
fputs ("\n", STDERR);
|
||
}
|
||
|
||
return a;
|
||
}
|
||
|
||
SCM read_input_file_env (SCM);
|
||
|
||
SCM
|
||
load_env (SCM a) ///((internal))
|
||
{
|
||
r0 = a;
|
||
g_stdin = -1;
|
||
char boot[128];
|
||
char buf[128];
|
||
if (getenv ("MES_BOOT"))
|
||
strcpy (boot, getenv ("MES_BOOT"));
|
||
else
|
||
strcpy (boot, "boot-0.scm");
|
||
if (getenv ("MES_PREFIX"))
|
||
{
|
||
strcpy (buf, getenv ("MES_PREFIX"));
|
||
strcpy (buf + strlen (buf), "/module");
|
||
strcpy (buf + strlen (buf), "/mes/");
|
||
strcpy (buf + strlen (buf), boot);
|
||
if (getenv ("MES_DEBUG"))
|
||
{
|
||
eputs ("MES_PREFIX reading boot-0:");
|
||
eputs (buf);
|
||
eputs ("\n");
|
||
}
|
||
g_stdin = open (buf, O_RDONLY);
|
||
}
|
||
if (g_stdin < 0)
|
||
{
|
||
char const *prefix = MODULEDIR "mes/";
|
||
strcpy (buf, prefix);
|
||
strcpy (buf + strlen (buf), boot);
|
||
if (getenv ("MES_DEBUG"))
|
||
{
|
||
eputs ("MODULEDIR reading boot-0:");
|
||
eputs (buf);
|
||
eputs ("\n");
|
||
}
|
||
g_stdin = open (buf, O_RDONLY);
|
||
}
|
||
if (g_stdin < 0)
|
||
{
|
||
strcpy (buf, "module/mes/");
|
||
strcpy (buf + strlen (buf), boot);
|
||
if (getenv ("MES_DEBUG"))
|
||
{
|
||
eputs (". reading boot-0:");
|
||
eputs (buf);
|
||
eputs ("\n");
|
||
}
|
||
g_stdin = open (buf, O_RDONLY);
|
||
}
|
||
if (g_stdin < 0)
|
||
{
|
||
if (getenv ("MES_DEBUG"))
|
||
{
|
||
eputs (". reading boot-0:");
|
||
eputs (boot);
|
||
eputs ("\n");
|
||
}
|
||
g_stdin = open (boot, O_RDONLY);
|
||
}
|
||
if (g_stdin < 0)
|
||
{
|
||
eputs ("mes: boot failed: no such file: ");
|
||
eputs (boot);
|
||
eputs ("\n");
|
||
exit (1);
|
||
}
|
||
|
||
if (!g_function) r0 = mes_builtins (r0);
|
||
r2 = read_input_file_env (r0);
|
||
g_stdin = STDIN;
|
||
return r2;
|
||
}
|
||
|
||
SCM
|
||
bload_env (SCM a) ///((internal))
|
||
{
|
||
#if __MESC__
|
||
char *mo = "mes/read-0-32.mo";
|
||
g_stdin = open ("module/mes/read-0-32.mo", O_RDONLY);
|
||
char *read0 = MODULEDIR "mes/read-0-32.mo";
|
||
g_stdin = g_stdin >= 0 ? g_stdin : open (read0, O_RDONLY);
|
||
#else
|
||
char *mo ="mes/read-0.mo";
|
||
g_stdin = open ("module/mes/read-0.mo", O_RDONLY);
|
||
g_stdin = g_stdin >= 0 ? g_stdin : open (MODULEDIR "mes/read-0.mo", O_RDONLY);
|
||
#endif
|
||
|
||
if (g_stdin < 0) {eputs ("no such file: ");eputs (mo);eputs ("\n");return 1;}
|
||
assert (getchar () == 'M');
|
||
assert (getchar () == 'E');
|
||
assert (getchar () == 'S');
|
||
|
||
if (g_debug) eputs ("*GOT MES*\n");
|
||
g_stack = getchar () << 8;
|
||
g_stack += getchar ();
|
||
|
||
char *p = (char*)g_cells;
|
||
int c = getchar ();
|
||
while (c != EOF)
|
||
{
|
||
*p++ = c;
|
||
c = getchar ();
|
||
}
|
||
g_free = (p-(char*)g_cells) / sizeof (struct scm);
|
||
gc_peek_frame ();
|
||
g_symbols = r1;
|
||
g_stdin = STDIN;
|
||
r0 = mes_builtins (r0);
|
||
|
||
#if __GNUC__
|
||
set_env_x (cell_symbol_gnuc, cell_t, r0);
|
||
set_env_x (cell_symbol_mesc, cell_f, r0);
|
||
#else
|
||
set_env_x (cell_symbol_gnuc, cell_f, r0);
|
||
set_env_x (cell_symbol_mesc, cell_t, r0);
|
||
#endif
|
||
|
||
if (g_debug > 1)
|
||
{
|
||
eputs ("symbols: ");
|
||
SCM s = g_symbols;
|
||
while (s && s != cell_nil) {
|
||
display_error_ (CAR (s));
|
||
eputs (" ");
|
||
s = CDR (s);
|
||
}
|
||
eputs ("\n");
|
||
eputs ("functions: ");
|
||
eputs (itoa (g_function));
|
||
eputs ("\n");
|
||
for (int i = 0; i < g_function; i++)
|
||
{
|
||
eputs ("[");
|
||
eputs (itoa (i));
|
||
eputs ("]: ");
|
||
eputs (g_functions[i].name);
|
||
eputs ("\n");
|
||
}
|
||
//display_error_ (r0);
|
||
//puts ("\n");
|
||
}
|
||
return r2;
|
||
}
|
||
|
||
#include "vector.c"
|
||
#include "gc.c"
|
||
#include "reader.c"
|
||
|
||
int
|
||
main (int argc, char *argv[])
|
||
{
|
||
char *p;
|
||
if (p = getenv ("MES_DEBUG")) g_debug = atoi (p);
|
||
if (g_debug) {eputs (";;; MODULEDIR=");eputs (MODULEDIR);eputs ("\n");}
|
||
if (p = getenv ("MES_MAX_ARENA")) MAX_ARENA_SIZE = atoi (p);
|
||
if (p = getenv ("MES_ARENA")) ARENA_SIZE = atoi (p);
|
||
GC_SAFETY = ARENA_SIZE / 400;
|
||
if (argc > 1 && !strcmp (argv[1], "--help")) return puts ("Usage: mes [--dump|--load] < FILE\n");
|
||
if (argc > 1 && !strcmp (argv[1], "--version")) {puts ("Mes ");puts (VERSION);puts ("\n");return 0;};
|
||
g_stdin = STDIN;
|
||
g_stdout = STDOUT;
|
||
r0 = mes_environment ();
|
||
|
||
SCM program = (argc > 1 && !strcmp (argv[1], "--load"))
|
||
? bload_env (r0) : load_env (r0);
|
||
g_tiny = argc > 2 && !strcmp (argv[2], "--tiny");
|
||
if (argc > 1 && !strcmp (argv[1], "--dump")) return dump ();
|
||
|
||
SCM lst = cell_nil;
|
||
for (int i=argc-1; i>=0; i--) lst = cons (MAKE_STRING (cstring_to_list (argv[i])), lst);
|
||
r0 = acons (cell_symbol_argv, lst, r0); // FIXME
|
||
r0 = acons (cell_symbol_argv, lst, r0);
|
||
push_cc (r2, cell_unspecified, r0, cell_unspecified);
|
||
if (g_debug > 1)
|
||
{
|
||
eputs ("program: ");
|
||
write_error_ (r1);
|
||
eputs ("\n");
|
||
}
|
||
r3 = cell_vm_begin_expand;
|
||
r1 = eval_apply ();
|
||
write_error_ (r1);
|
||
eputs ("\n");
|
||
gc (g_stack);
|
||
if (g_debug)
|
||
{
|
||
eputs ("\ngc stats: [");
|
||
eputs (itoa (g_free));
|
||
eputs ("]\n");
|
||
}
|
||
return 0;
|
||
}
|