-/* Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
+/* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
+
+/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
+ gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
+
\f
/* This file is read twice in order to produce debugging versions of
#ifndef DEVAL
/* We need this to get the definitions for HAVE_ALLOCA_H, etc. */
-#include "scmconfig.h"
+#include "libguile/scmconfig.h"
/* AIX requires this to be the first thing in the file. The #pragma
directive is indented so pre-ANSI compilers will ignore it, rather
#endif
#include <stdio.h>
-#include "_scm.h"
-#include "debug.h"
-#include "alist.h"
-#include "eq.h"
-#include "continuations.h"
-#include "throw.h"
-#include "smob.h"
-#include "markers.h"
-#include "macros.h"
-#include "procprop.h"
-#include "hashtab.h"
-#include "hash.h"
-#include "srcprop.h"
-#include "stackchk.h"
-#include "objects.h"
-#include "feature.h"
-
-#include "eval.h"
+#include "libguile/_scm.h"
+#include "libguile/debug.h"
+#include "libguile/alist.h"
+#include "libguile/eq.h"
+#include "libguile/continuations.h"
+#include "libguile/throw.h"
+#include "libguile/smob.h"
+#include "libguile/macros.h"
+#include "libguile/procprop.h"
+#include "libguile/hashtab.h"
+#include "libguile/hash.h"
+#include "libguile/srcprop.h"
+#include "libguile/stackchk.h"
+#include "libguile/objects.h"
+#include "libguile/async.h"
+#include "libguile/feature.h"
+#include "libguile/modules.h"
+#include "libguile/ports.h"
+#include "libguile/root.h"
+#include "libguile/vectors.h"
+
+#include "libguile/validate.h"
+#include "libguile/eval.h"
+
+SCM (*scm_memoize_method) (SCM, SCM);
+
\f
/* The evaluator contains a plethora of EVAL symbols.
*/
#define SCM_CEVAL scm_ceval
-#define SIDEVAL(x, env) if SCM_NIMP(x) SCM_CEVAL((x), (env))
+#define SIDEVAL(x, env) if (SCM_NIMP (x)) SCM_CEVAL((x), (env))
-#define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR(x)) \
- ? *scm_lookupcar(x, env) \
- : SCM_CEVAL(SCM_CAR(x), env))
+#define EVALCELLCAR(x, env) (SCM_SYMBOLP (SCM_CAR (x)) \
+ ? *scm_lookupcar (x, env, 1) \
+ : SCM_CEVAL (SCM_CAR (x), env))
-#define EVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x))\
- ? (SCM_IMP(SCM_CAR(x)) \
- ? SCM_EVALIM(SCM_CAR(x), env) \
- : SCM_GLOC_VAL(SCM_CAR(x))) \
- : EVALCELLCAR(x, env))
+#define EVALCAR(x, env) (SCM_NCELLP (SCM_CAR (x)) \
+ ? (SCM_IMP (SCM_CAR (x)) \
+ ? SCM_EVALIM (SCM_CAR (x), env) \
+ : SCM_GLOC_VAL (SCM_CAR (x))) \
+ : EVALCELLCAR (x, env))
#define EXTEND_ENV SCM_EXTEND_ENV
#ifdef MEMOIZE_LOCALS
SCM *
-scm_ilookup (iloc, env)
- SCM iloc;
- SCM env;
+scm_ilookup (SCM iloc, SCM env)
{
register int ir = SCM_IFRAME (iloc);
register SCM er = env;
SCM_LOOKUPCAR1 and aborts on recieving NULL. So SCM_LOOKUPCAR
should only be called when it is known that VLOC is not the first
pair of a special form. Otherwise, use SCM_LOOKUPCAR1 and check
- for NULL. I think I've found the only place where this applies. */
+ for NULL. I think I've found the only places where this
+ applies. */
#endif /* USE_THREADS */
+/* scm_lookupcar returns a pointer to this when a variable could not
+ be found and it should not throw an error. Never assign to this.
+*/
+static SCM undef_object = SCM_UNDEFINED;
+
+SCM_SYMBOL (scm_unbound_variable_key, "unbound-variable");
+
#ifdef USE_THREADS
static SCM *
-scm_lookupcar1 (SCM vloc, SCM genv)
+scm_lookupcar1 (SCM vloc, SCM genv, int check)
#else
SCM *
-scm_lookupcar (SCM vloc, SCM genv)
+scm_lookupcar (SCM vloc, SCM genv, int check)
#endif
{
SCM env = genv;
#endif
for (; SCM_NIMP (env); env = SCM_CDR (env))
{
- if (SCM_BOOL_T == scm_procedure_p (SCM_CAR (env)))
+ if (SCM_TRUE_P (scm_procedure_p (SCM_CAR (env))))
break;
al = SCM_CARLOC (env);
for (fl = SCM_CAR (*al); SCM_NIMP (fl); fl = SCM_CDR (fl))
{
if (SCM_NCONSP (fl))
{
- if (fl == var)
+ if (SCM_EQ_P (fl, var))
{
#ifdef MEMOIZE_LOCALS
#ifdef USE_THREADS
- if (SCM_CAR (vloc) != var)
+ if (! SCM_EQ_P (SCM_CAR (vloc), var))
goto race;
#endif
- SCM_SETCAR (vloc, iloc + SCM_ICDR);
+ SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (iloc) + SCM_ICDR);
#endif
return SCM_CDRLOC (*al);
}
break;
}
al = SCM_CDRLOC (*al);
- if (SCM_CAR (fl) == var)
+ if (SCM_EQ_P (SCM_CAR (fl), var))
{
#ifdef MEMOIZE_LOCALS
#ifndef SCM_RECKLESS /* letrec inits to SCM_UNDEFINED */
return SCM_CARLOC (*al);
}
#ifdef MEMOIZE_LOCALS
- iloc += SCM_IDINC;
+ iloc = SCM_PACK (SCM_UNPACK (iloc) + SCM_IDINC);
#endif
}
#ifdef MEMOIZE_LOCALS
- iloc = (~SCM_IDSTMSK) & (iloc + SCM_IFRINC);
+ iloc = SCM_PACK ((~SCM_IDSTMSK) & (SCM_UNPACK(iloc) + SCM_IFRINC));
#endif
}
{
else
top_thunk = SCM_BOOL_F;
vcell = scm_sym2vcell (var, top_thunk, SCM_BOOL_F);
- if (vcell == SCM_BOOL_F)
+ if (SCM_FALSEP (vcell))
goto errout;
else
var = vcell;
var = SCM_CAR (var);
errout:
/* scm_everr (vloc, genv,...) */
- scm_misc_error (NULL,
- SCM_NULLP (env)
- ? "Unbound variable: %S"
- : "Damaged environment: %S",
- scm_listify (var, SCM_UNDEFINED));
+ if (check)
+ {
+ if (SCM_NULLP (env))
+ scm_error (scm_unbound_variable_key, NULL, "Unbound variable: ~S",
+ scm_cons (var, SCM_EOL), SCM_BOOL_F);
+ else
+ scm_misc_error (NULL, "Damaged environment: ~S",
+ scm_cons (var, SCM_EOL));
+ }
+ else
+ return &undef_object;
}
#endif
#ifdef USE_THREADS
completely. */
race:
var = SCM_CAR (vloc);
- if ((var & 7) == 1)
+ if (SCM_ITAG3 (var) == scm_tc3_cons_gloc)
return SCM_GLOC_VAL_LOC (var);
#ifdef MEMOIZE_LOCALS
- if ((var & 127) == (127 & SCM_ILOC00))
+ if ((SCM_UNPACK (var) & 127) == (127 & SCM_UNPACK (SCM_ILOC00)))
return scm_ilookup (var, genv);
#endif
/* We can't cope with anything else than glocs and ilocs. When
}
#endif /* USE_THREADS */
- SCM_SETCAR (vloc, var + 1);
+ SCM_SET_CELL_WORD_0 (vloc, SCM_UNPACK (var) + scm_tc3_cons_gloc);
/* Except wait...what if the var is not a vcell,
* but syntax or something.... */
return SCM_CDRLOC (var);
#ifdef USE_THREADS
SCM *
-scm_lookupcar (vloc, genv)
- SCM vloc;
- SCM genv;
+scm_lookupcar (SCM vloc, SCM genv, int check)
{
- SCM *loc = scm_lookupcar1 (vloc, genv);
+ SCM *loc = scm_lookupcar1 (vloc, genv, check);
if (loc == NULL)
abort ();
return loc;
#define unmemocar scm_unmemocar
SCM
-scm_unmemocar (form, env)
- SCM form;
- SCM env;
+scm_unmemocar (SCM form, SCM env)
{
-#ifdef DEBUG_EXTENSIONS
- register int ir;
-#endif
SCM c;
if (SCM_IMP (form))
return form;
c = SCM_CAR (form);
- if (1 == (c & 7))
- SCM_SETCAR (form, SCM_CAR (c - 1));
+ if (SCM_ITAG3 (c) == scm_tc3_cons_gloc)
+ SCM_SETCAR (form, SCM_GLOC_SYM (c));
#ifdef MEMOIZE_LOCALS
#ifdef DEBUG_EXTENSIONS
else if (SCM_ILOCP (c))
{
+ int ir;
+
for (ir = SCM_IFRAME (c); ir != 0; --ir)
env = SCM_CDR (env);
env = SCM_CAR (SCM_CAR (env));
SCM
-scm_eval_car (pair, env)
- SCM pair;
- SCM env;
+scm_eval_car (SCM pair, SCM env)
{
return SCM_XEVALCAR (pair, env);
}
* some memoized forms have different syntax
*/
-char scm_s_expression[] = "missing or extra expression";
-char scm_s_test[] = "bad test";
-char scm_s_body[] = "bad body";
-char scm_s_bindings[] = "bad bindings";
-char scm_s_variable[] = "bad variable";
-char scm_s_clauses[] = "bad or missing clauses";
-char scm_s_formals[] = "bad formals";
+const char scm_s_expression[] = "missing or extra expression";
+const char scm_s_test[] = "bad test";
+const char scm_s_body[] = "bad body";
+const char scm_s_bindings[] = "bad bindings";
+const char scm_s_variable[] = "bad variable";
+const char scm_s_clauses[] = "bad or missing clauses";
+const char scm_s_formals[] = "bad formals";
+
+SCM scm_sym_dot, scm_sym_arrow, scm_sym_else;
+SCM scm_sym_unquote, scm_sym_uq_splicing, scm_sym_apply;
-SCM scm_i_dot, scm_i_arrow, scm_i_else, scm_i_unquote, scm_i_uq_splicing, scm_i_apply;
+SCM scm_f_apply;
#ifdef DEBUG_EXTENSIONS
-SCM scm_i_enter_frame, scm_i_apply_frame, scm_i_exit_frame;
-SCM scm_i_trace;
+SCM scm_sym_enter_frame, scm_sym_apply_frame, scm_sym_exit_frame;
+SCM scm_sym_trace;
#endif
#define ASRTSYNTAX(cond_, msg_) if(!(cond_))scm_wta(xorig, (msg_), what);
-static void bodycheck SCM_P ((SCM xorig, SCM *bodyloc, char *what));
+static void bodycheck (SCM xorig, SCM *bodyloc, const char *what);
static void
-bodycheck (xorig, bodyloc, what)
- SCM xorig;
- SCM *bodyloc;
- char *what;
+bodycheck (SCM xorig, SCM *bodyloc, const char *what)
{
ASRTSYNTAX (scm_ilength (*bodyloc) >= 1, scm_s_expression);
}
+/* Check that the body denoted by XORIG is valid and rewrite it into
+ its internal form. The internal form of a body is just the body
+ itself, but prefixed with an ISYM that denotes to what kind of
+ outer construct this body belongs. A lambda body starts with
+ SCM_IM_LAMBDA, for example, a body of a let starts with SCM_IM_LET,
+ etc. The one exception is a body that belongs to a letrec that has
+ been formed by rewriting internal defines: it starts with
+ SCM_IM_DEFINE. */
+
+/* XXX - Besides controlling the rewriting of internal defines, the
+ additional ISYM could be used for improved error messages.
+ This is not done yet. */
+
+static SCM
+scm_m_body (SCM op, SCM xorig, const char *what)
+{
+ ASRTSYNTAX (scm_ilength (xorig) >= 1, scm_s_expression);
+
+ /* Don't add another ISYM if one is present already. */
+ if (SCM_ISYMP (SCM_CAR (xorig)))
+ return xorig;
+
+ /* Retain possible doc string. */
+ if (SCM_IMP (SCM_CAR(xorig)) || SCM_NCONSP (SCM_CAR (xorig)))
+ {
+ if (SCM_NNULLP (SCM_CDR(xorig)))
+ return scm_cons (SCM_CAR (xorig),
+ scm_m_body (op, SCM_CDR(xorig), what));
+ return xorig;
+ }
+
+ return scm_cons2 (op, SCM_CAR (xorig), SCM_CDR(xorig));
+}
+
SCM_SYNTAX(s_quote,"quote", scm_makmmacro, scm_m_quote);
-SCM_GLOBAL_SYMBOL(scm_i_quote,s_quote);
+SCM_GLOBAL_SYMBOL(scm_sym_quote, s_quote);
SCM
-scm_m_quote (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_quote (SCM xorig, SCM env)
{
+ SCM x = scm_copy_tree (SCM_CDR (xorig));
+
SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1,
xorig, scm_s_expression, s_quote);
- return scm_cons (SCM_IM_QUOTE, SCM_CDR (xorig));
+ return scm_cons (SCM_IM_QUOTE, x);
}
SCM_SYNTAX(s_begin, "begin", scm_makmmacro, scm_m_begin);
-SCM_SYMBOL(scm_i_begin, s_begin);
+SCM_GLOBAL_SYMBOL(scm_sym_begin, s_begin);
SCM
-scm_m_begin (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_begin (SCM xorig, SCM env)
{
SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) >= 1,
xorig, scm_s_expression, s_begin);
}
SCM_SYNTAX(s_if, "if", scm_makmmacro, scm_m_if);
-SCM_SYMBOL(scm_i_if, s_if);
+SCM_GLOBAL_SYMBOL(scm_sym_if, s_if);
SCM
-scm_m_if (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_if (SCM xorig, SCM env)
{
int len = scm_ilength (SCM_CDR (xorig));
SCM_ASSYNT (len >= 2 && len <= 3, xorig, scm_s_expression, "if");
}
-SCM_SYNTAX(s_set,"set!", scm_makmmacro, scm_m_set);
-SCM_SYMBOL(scm_i_set,s_set);
+/* Will go into the RnRS module when Guile is factorized.
+SCM_SYNTAX(scm_s_set_x,"set!", scm_makmmacro, scm_m_set_x); */
+const char scm_s_set_x[] = "set!";
+SCM_GLOBAL_SYMBOL(scm_sym_set_x, scm_s_set_x);
SCM
-scm_m_set (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_set_x (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig);
- SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, s_set);
- SCM_ASSYNT (SCM_NIMP (SCM_CAR (x)) && SCM_SYMBOLP (SCM_CAR (x)),
- xorig, scm_s_variable, s_set);
- return scm_cons (SCM_IM_SET, x);
+ SCM_ASSYNT (2 == scm_ilength (x), xorig, scm_s_expression, scm_s_set_x);
+ SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (x)),
+ xorig, scm_s_variable, scm_s_set_x);
+ return scm_cons (SCM_IM_SET_X, x);
}
#if 0
SCM
-scm_m_vref (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_vref (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig);
SCM_ASSYNT (1 == scm_ilength (x), xorig, scm_s_expression, s_vref);
{
/* scm_everr (SCM_UNDEFINED, env,..., "global variable reference") */
scm_misc_error (NULL,
- "Bad variable: %S",
+ "Bad variable: ~S",
scm_listify (SCM_CAR (SCM_CDR (x)), SCM_UNDEFINED));
}
SCM_ASSYNT (SCM_NIMP(x) && DEFSCM_VARIABLEP (SCM_CAR (x)),
xorig, scm_s_variable, s_vref);
- return
return scm_cons (IM_VREF, x);
}
SCM
-scm_m_vset (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_vset (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig);
SCM_ASSYNT (3 == scm_ilength (x), xorig, scm_s_expression, s_vset);
SCM_SYNTAX(s_and, "and", scm_makmmacro, scm_m_and);
-SCM_GLOBAL_SYMBOL(scm_i_and, s_and);
+SCM_GLOBAL_SYMBOL(scm_sym_and, s_and);
SCM
-scm_m_and (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_and (SCM xorig, SCM env)
{
int len = scm_ilength (SCM_CDR (xorig));
SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_and);
}
SCM_SYNTAX(s_or,"or", scm_makmmacro, scm_m_or);
-SCM_SYMBOL(scm_i_or,s_or);
+SCM_GLOBAL_SYMBOL(scm_sym_or,s_or);
SCM
-scm_m_or (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_or (SCM xorig, SCM env)
{
int len = scm_ilength (SCM_CDR (xorig));
SCM_ASSYNT (len >= 0, xorig, scm_s_test, s_or);
SCM_SYNTAX(s_case, "case", scm_makmmacro, scm_m_case);
-SCM_SYMBOL(scm_i_case, s_case);
+SCM_GLOBAL_SYMBOL(scm_sym_case, s_case);
SCM
-scm_m_case (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_case (SCM xorig, SCM env)
{
- SCM proc, x = SCM_CDR (xorig);
+ SCM proc, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx;
SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_clauses, s_case);
while (SCM_NIMP (x = SCM_CDR (x)))
{
proc = SCM_CAR (x);
SCM_ASSYNT (scm_ilength (proc) >= 2, xorig, scm_s_clauses, s_case);
SCM_ASSYNT (scm_ilength (SCM_CAR (proc)) >= 0
- || scm_i_else == SCM_CAR (proc),
+ || SCM_EQ_P (scm_sym_else, SCM_CAR (proc)),
xorig, scm_s_clauses, s_case);
}
- return scm_cons (SCM_IM_CASE, SCM_CDR (xorig));
+ return scm_cons (SCM_IM_CASE, cdrx);
}
SCM_SYNTAX(s_cond, "cond", scm_makmmacro, scm_m_cond);
-SCM_SYMBOL(scm_i_cond, s_cond);
+SCM_GLOBAL_SYMBOL(scm_sym_cond, s_cond);
SCM
-scm_m_cond (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_cond (SCM xorig, SCM env)
{
- SCM arg1, x = SCM_CDR (xorig);
+ SCM arg1, cdrx = scm_list_copy (SCM_CDR (xorig)), x = cdrx;
int len = scm_ilength (x);
SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond);
while (SCM_NIMP (x))
arg1 = SCM_CAR (x);
len = scm_ilength (arg1);
SCM_ASSYNT (len >= 1, xorig, scm_s_clauses, s_cond);
- if (scm_i_else == SCM_CAR (arg1))
+ if (SCM_EQ_P (scm_sym_else, SCM_CAR (arg1)))
{
SCM_ASSYNT (SCM_NULLP (SCM_CDR (x)) && len >= 2,
xorig, "bad ELSE clause", s_cond);
SCM_SETCAR (arg1, SCM_BOOL_T);
}
- if (len >= 2 && scm_i_arrow == SCM_CAR (SCM_CDR (arg1)))
+ if (len >= 2 && SCM_EQ_P (scm_sym_arrow, SCM_CAR (SCM_CDR (arg1))))
SCM_ASSYNT (3 == len && SCM_NIMP (SCM_CAR (SCM_CDR (SCM_CDR (arg1)))),
xorig, "bad recipient", s_cond);
x = SCM_CDR (x);
}
- return scm_cons (SCM_IM_COND, SCM_CDR (xorig));
+ return scm_cons (SCM_IM_COND, cdrx);
}
SCM_SYNTAX(s_lambda, "lambda", scm_makmmacro, scm_m_lambda);
-SCM_GLOBAL_SYMBOL(scm_i_lambda, s_lambda);
+SCM_GLOBAL_SYMBOL(scm_sym_lambda, s_lambda);
SCM
-scm_m_lambda (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_lambda (SCM xorig, SCM env)
{
SCM proc, x = SCM_CDR (xorig);
if (scm_ilength (x) < 2)
proc = SCM_CAR (x);
if (SCM_NULLP (proc))
goto memlambda;
+ if (SCM_EQ_P (SCM_IM_LET, proc)) /* named let */
+ goto memlambda;
if (SCM_IMP (proc))
goto badforms;
if (SCM_SYMBOLP (proc))
else
goto memlambda;
}
- if (!(SCM_NIMP (SCM_CAR (proc)) && SCM_SYMBOLP (SCM_CAR (proc))))
+ if (!SCM_SYMBOLP (SCM_CAR (proc)))
goto badforms;
proc = SCM_CDR (proc);
}
- if SCM_NNULLP
- (proc)
- badforms:scm_wta (xorig, scm_s_formals, "lambda");
-memlambda:
- bodycheck (xorig, SCM_CDRLOC (x), "lambda");
- return scm_cons (SCM_IM_LAMBDA, SCM_CDR (xorig));
+ if (SCM_NNULLP (proc))
+ {
+ badforms:
+ scm_wta (xorig, scm_s_formals, s_lambda);
+ }
+
+ memlambda:
+ return scm_cons2 (SCM_IM_LAMBDA, SCM_CAR (x),
+ scm_m_body (SCM_IM_LAMBDA, SCM_CDR (x), s_lambda));
}
SCM_SYNTAX(s_letstar,"let*", scm_makmmacro, scm_m_letstar);
-SCM_SYMBOL(scm_i_letstar,s_letstar);
+SCM_GLOBAL_SYMBOL(scm_sym_letstar,s_letstar);
SCM
-scm_m_letstar (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_letstar (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig), arg1, proc, vars = SCM_EOL, *varloc = &vars;
int len = scm_ilength (x);
SCM_ASSYNT (len >= 2, xorig, scm_s_body, s_letstar);
proc = SCM_CAR (x);
SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_letstar);
- while SCM_NIMP (proc)
+ while (SCM_NIMP (proc))
{
arg1 = SCM_CAR (proc);
SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_letstar);
- SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)),
- xorig, scm_s_variable, s_letstar);
+ SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, s_letstar);
*varloc = scm_cons2 (SCM_CAR (arg1), SCM_CAR (SCM_CDR (arg1)), SCM_EOL);
varloc = SCM_CDRLOC (SCM_CDR (*varloc));
proc = SCM_CDR (proc);
}
x = scm_cons (vars, SCM_CDR (x));
- bodycheck (xorig, SCM_CDRLOC (x), s_letstar);
- return scm_cons (SCM_IM_LETSTAR, x);
+
+ return scm_cons2 (SCM_IM_LETSTAR, SCM_CAR (x),
+ scm_m_body (SCM_IM_LETSTAR, SCM_CDR (x), s_letstar));
}
/* DO gets the most radically altered syntax
*/
SCM_SYNTAX(s_do, "do", scm_makmmacro, scm_m_do);
-SCM_SYMBOL(scm_i_do, s_do);
+SCM_GLOBAL_SYMBOL(scm_sym_do, s_do);
SCM
-scm_m_do (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_do (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig), arg1, proc;
SCM vars = SCM_EOL, inits = SCM_EOL, steps = SCM_EOL;
SCM_ASSYNT (len >= 2, xorig, scm_s_test, "do");
proc = SCM_CAR (x);
SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, "do");
- while SCM_NIMP
- (proc)
+ while (SCM_NIMP(proc))
{
arg1 = SCM_CAR (proc);
len = scm_ilength (arg1);
SCM_ASSYNT (2 == len || 3 == len, xorig, scm_s_bindings, "do");
- SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)),
- xorig, scm_s_variable, "do");
+ SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)), xorig, scm_s_variable, "do");
/* vars reversed here, inits and steps reversed at evaluation */
vars = scm_cons (SCM_CAR (arg1), vars); /* variable */
arg1 = SCM_CDR (arg1);
#define evalcar scm_eval_car
-static SCM iqq SCM_P ((SCM form, SCM env, int depth));
+static SCM iqq (SCM form, SCM env, int depth);
SCM_SYNTAX(s_quasiquote, "quasiquote", scm_makacro, scm_m_quasiquote);
-SCM_GLOBAL_SYMBOL(scm_i_quasiquote, s_quasiquote);
+SCM_GLOBAL_SYMBOL(scm_sym_quasiquote, s_quasiquote);
SCM
-scm_m_quasiquote (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_quasiquote (SCM xorig, SCM env)
{
SCM x = SCM_CDR (xorig);
SCM_ASSYNT (scm_ilength (x) == 1, xorig, scm_s_expression, s_quasiquote);
static SCM
-iqq (form, env, depth)
- SCM form;
- SCM env;
- int depth;
+iqq (SCM form,SCM env,int depth)
{
SCM tmp;
int edepth = depth;
- if SCM_IMP
- (form) return form;
+ if (SCM_IMP(form))
+ return form;
if (SCM_VECTORP (form))
{
long i = SCM_LENGTH (form);
tmp = scm_cons (data[i], tmp);
return scm_vector (iqq (tmp, env, depth));
}
- if SCM_NCONSP
- (form) return form;
+ if (SCM_NCONSP(form))
+ return form;
tmp = SCM_CAR (form);
- if (scm_i_quasiquote == tmp)
+ if (SCM_EQ_P (scm_sym_quasiquote, tmp))
{
depth++;
goto label;
}
- if (scm_i_unquote == tmp)
+ if (SCM_EQ_P (scm_sym_unquote, tmp))
{
--depth;
label:
form = SCM_CDR (form);
- SCM_ASSERT (SCM_NIMP (form) && SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)),
- form, SCM_ARG1, s_quasiquote);
+ SCM_ASSERT (SCM_ECONSP (form) && SCM_NULLP (SCM_CDR (form)),
+ form, SCM_ARG1, s_quasiquote);
if (0 == depth)
return evalcar (form, env);
return scm_cons2 (tmp, iqq (SCM_CAR (form), env, depth), SCM_EOL);
}
- if (SCM_NIMP (tmp) && (scm_i_uq_splicing == SCM_CAR (tmp)))
+ if (SCM_NIMP (tmp) && (SCM_EQ_P (scm_sym_uq_splicing, SCM_CAR (tmp))))
{
tmp = SCM_CDR (tmp);
if (0 == --edepth)
/* Here are acros which return values rather than code. */
-SCM_SYNTAX(s_delay, "delay", scm_makacro, scm_m_delay);
+SCM_SYNTAX (s_delay, "delay", scm_makmmacro, scm_m_delay);
+SCM_GLOBAL_SYMBOL (scm_sym_delay, s_delay);
SCM
-scm_m_delay (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_delay (SCM xorig, SCM env)
{
SCM_ASSYNT (scm_ilength (xorig) == 2, xorig, scm_s_expression, s_delay);
- xorig = SCM_CDR (xorig);
- return scm_makprom (scm_closure (scm_cons2 (SCM_EOL, SCM_CAR (xorig), SCM_CDR (xorig)),
- env));
+ return scm_cons2 (SCM_IM_DELAY, SCM_EOL, SCM_CDR (xorig));
}
-SCM
-scm_env_top_level (env)
- SCM env;
-{
- while (SCM_NIMP(env))
- {
- if (SCM_BOOL_T == scm_procedure_p (SCM_CAR(env)))
- return SCM_CAR(env);
- env = SCM_CDR (env);
- }
- return SCM_BOOL_F;
-}
-
SCM_SYNTAX(s_define, "define", scm_makmmacro, scm_m_define);
-SCM_SYMBOL(scm_i_define, s_define);
+SCM_GLOBAL_SYMBOL(scm_sym_define, s_define);
SCM
-scm_m_define (x, env)
- SCM x;
- SCM env;
+scm_m_define (SCM x, SCM env)
{
SCM proc, arg1 = x;
x = SCM_CDR (x);
SCM_ASSYNT (scm_ilength (x) >= 2, arg1, scm_s_expression, s_define);
proc = SCM_CAR (x);
x = SCM_CDR (x);
- while (SCM_NIMP (proc) && SCM_CONSP (proc))
+ while (SCM_CONSP (proc))
{ /* nested define syntax */
- x = scm_cons (scm_cons2 (scm_i_lambda, SCM_CDR (proc), x), SCM_EOL);
+ x = scm_cons (scm_cons2 (scm_sym_lambda, SCM_CDR (proc), x), SCM_EOL);
proc = SCM_CAR (proc);
}
- SCM_ASSYNT (SCM_NIMP (proc) && SCM_SYMBOLP (proc),
+ SCM_ASSYNT (SCM_SYMBOLP (proc),
arg1, scm_s_variable, s_define);
SCM_ASSYNT (1 == scm_ilength (x), arg1, scm_s_expression, s_define);
if (SCM_TOP_LEVEL (env))
proc:
if (SCM_CLOSUREP (arg1)
/* Only the first definition determines the name. */
- && scm_procedure_property (arg1, scm_i_name) == SCM_BOOL_F)
- scm_set_procedure_property_x (arg1, scm_i_name, proc);
+ && SCM_FALSEP (scm_procedure_property (arg1, scm_sym_name)))
+ scm_set_procedure_property_x (arg1, scm_sym_name, proc);
else if (SCM_TYP16 (arg1) == scm_tc16_macro
- && SCM_CDR (arg1) != arg1)
+ && !SCM_EQ_P (SCM_CDR (arg1), arg1))
{
arg1 = SCM_CDR (arg1);
goto proc;
arg1 = scm_sym2vcell (proc, scm_env_top_level (env), SCM_BOOL_T);
#if 0
#ifndef SCM_RECKLESS
- if (SCM_NIMP (SCM_CDR (arg1)) && ((SCM) SCM_SNAME (SCM_CDR (arg1)) == proc)
+ if (SCM_NIMP (SCM_CDR (arg1)) && (SCM_SNAME (SCM_CDR (arg1)) == proc)
&& (SCM_CDR (arg1) != x))
scm_warn ("redefining built-in ", SCM_CHARS (proc));
else
#endif
SCM_SETCDR (arg1, x);
#ifdef SICP
- return scm_cons2 (scm_i_quote, SCM_CAR (arg1), SCM_EOL);
+ return scm_cons2 (scm_sym_quote, SCM_CAR (arg1), SCM_EOL);
#else
return SCM_UNSPECIFIED;
#endif
/* end of acros */
-SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec);
-SCM_SYMBOL(scm_i_letrec, s_letrec);
-
-SCM
-scm_m_letrec (xorig, env)
- SCM xorig;
- SCM env;
+static SCM
+scm_m_letrec1 (SCM op, SCM imm, SCM xorig, SCM env)
{
SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */
char *what = SCM_CHARS (SCM_CAR (xorig));
SCM x = cdrx, proc, arg1; /* structure traversers */
SCM vars = SCM_EOL, inits = SCM_EOL, *initloc = &inits;
- ASRTSYNTAX (scm_ilength (x) >= 2, scm_s_body);
proc = SCM_CAR (x);
- if SCM_NULLP
- (proc) return scm_m_letstar (xorig, env); /* null binding, let* faster */
ASRTSYNTAX (scm_ilength (proc) >= 1, scm_s_bindings);
do
{
/* vars scm_list reversed here, inits reversed at evaluation */
arg1 = SCM_CAR (proc);
ASRTSYNTAX (2 == scm_ilength (arg1), scm_s_bindings);
- ASRTSYNTAX (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)), scm_s_variable);
+ ASRTSYNTAX (SCM_SYMBOLP (SCM_CAR (arg1)),
+ scm_s_variable);
vars = scm_cons (SCM_CAR (arg1), vars);
*initloc = scm_cons (SCM_CAR (SCM_CDR (arg1)), SCM_EOL);
initloc = SCM_CDRLOC (*initloc);
}
- while SCM_NIMP
- (proc = SCM_CDR (proc));
- cdrx = scm_cons2 (vars, inits, SCM_CDR (x));
- bodycheck (xorig, SCM_CDRLOC (SCM_CDR (cdrx)), what);
- return scm_cons (SCM_IM_LETREC, cdrx);
+ while (SCM_NIMP (proc = SCM_CDR (proc)));
+
+ return scm_cons2 (op, vars,
+ scm_cons (inits, scm_m_body (imm, SCM_CDR (x), what)));
}
+SCM_SYNTAX(s_letrec, "letrec", scm_makmmacro, scm_m_letrec);
+SCM_GLOBAL_SYMBOL(scm_sym_letrec, s_letrec);
+
+SCM
+scm_m_letrec (SCM xorig, SCM env)
+{
+ SCM x = SCM_CDR (xorig);
+ SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_letrec);
+
+ if (SCM_NULLP (SCM_CAR (x))) /* null binding, let* faster */
+ return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), SCM_EOL,
+ scm_m_body (SCM_IM_LETREC,
+ SCM_CDR (x),
+ s_letrec)),
+ env);
+ else
+ return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LETREC, xorig, env);
+}
SCM_SYNTAX(s_let, "let", scm_makmmacro, scm_m_let);
-SCM_SYMBOL(scm_i_let, s_let);
+SCM_GLOBAL_SYMBOL(scm_sym_let, s_let);
SCM
-scm_m_let (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_let (SCM xorig, SCM env)
{
SCM cdrx = SCM_CDR (xorig); /* locally mutable version of form */
SCM x = cdrx, proc, arg1, name; /* structure traversers */
SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let);
proc = SCM_CAR (x);
if (SCM_NULLP (proc)
- || (SCM_NIMP (proc) && SCM_CONSP (proc)
- && SCM_NIMP (SCM_CAR (proc)) && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc))))
- return scm_m_letstar (xorig, env); /* null or single binding, let* is faster */
+ || (SCM_CONSP (proc)
+ && SCM_CONSP (SCM_CAR (proc)) && SCM_NULLP (SCM_CDR (proc))))
+ {
+ /* null or single binding, let* is faster */
+ return scm_m_letstar (scm_cons2 (SCM_CAR (xorig), proc,
+ scm_m_body (SCM_IM_LET,
+ SCM_CDR (x),
+ s_let)),
+ env);
+ }
+
SCM_ASSYNT (SCM_NIMP (proc), xorig, scm_s_bindings, s_let);
- if (SCM_CONSP (proc)) /* plain let, proc is <bindings> */
- return scm_cons (SCM_IM_LET, SCM_CDR (scm_m_letrec (xorig, env)));
+ if (SCM_CONSP (proc))
+ {
+ /* plain let, proc is <bindings> */
+ return scm_m_letrec1 (SCM_IM_LET, SCM_IM_LET, xorig, env);
+ }
+
if (!SCM_SYMBOLP (proc))
scm_wta (xorig, scm_s_bindings, s_let); /* bad let */
name = proc; /* named let, build equiv letrec */
x = SCM_CDR (x);
SCM_ASSYNT (scm_ilength (x) >= 2, xorig, scm_s_body, s_let);
- proc = SCM_CAR (x); /* bindings scm_list */
+ proc = SCM_CAR (x); /* bindings list */
SCM_ASSYNT (scm_ilength (proc) >= 0, xorig, scm_s_bindings, s_let);
- while SCM_NIMP
- (proc)
+ while (SCM_NIMP (proc))
{ /* vars and inits both in order */
arg1 = SCM_CAR (proc);
SCM_ASSYNT (2 == scm_ilength (arg1), xorig, scm_s_bindings, s_let);
- SCM_ASSYNT (SCM_NIMP (SCM_CAR (arg1)) && SCM_SYMBOLP (SCM_CAR (arg1)),
+ SCM_ASSYNT (SCM_SYMBOLP (SCM_CAR (arg1)),
xorig, scm_s_variable, s_let);
*varloc = scm_cons (SCM_CAR (arg1), SCM_EOL);
varloc = SCM_CDRLOC (*varloc);
initloc = SCM_CDRLOC (*initloc);
proc = SCM_CDR (proc);
}
- return
- scm_m_letrec (scm_cons2 (scm_i_let,
- scm_cons (scm_cons2 (name, scm_cons2 (scm_i_lambda, vars, SCM_CDR (x)), SCM_EOL), SCM_EOL),
- scm_acons (name, inits, SCM_EOL)), /* body */
- env);
+
+ proc = scm_cons2 (scm_sym_lambda, vars,
+ scm_m_body (SCM_IM_LET, SCM_CDR (x), "let"));
+ proc = scm_cons2 (scm_sym_let, scm_cons (scm_cons2 (name, proc, SCM_EOL),
+ SCM_EOL),
+ scm_acons (name, inits, SCM_EOL));
+ return scm_m_letrec1 (SCM_IM_LETREC, SCM_IM_LET, proc, env);
}
-SCM_SYNTAX(s_atapply,"@apply", scm_makmmacro, scm_m_apply);
-SCM_SYMBOL(scm_i_atapply, s_atapply);
+SCM_SYNTAX (s_atapply,"@apply", scm_makmmacro, scm_m_apply);
+SCM_GLOBAL_SYMBOL (scm_sym_atapply, s_atapply);
+SCM_GLOBAL_SYMBOL (scm_sym_apply, s_atapply + 1);
SCM
-scm_m_apply (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_apply (SCM xorig, SCM env)
{
SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 2,
xorig, scm_s_expression, s_atapply);
SCM_SYNTAX(s_atcall_cc,"@call-with-current-continuation", scm_makmmacro, scm_m_cont);
-SCM_SYMBOL(scm_i_atcall_cc,s_atcall_cc);
+SCM_GLOBAL_SYMBOL(scm_sym_atcall_cc,s_atcall_cc);
SCM
-scm_m_cont (xorig, env)
- SCM xorig;
- SCM env;
+scm_m_cont (SCM xorig, SCM env)
{
SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1,
xorig, scm_s_expression, s_atcall_cc);
return scm_cons (SCM_IM_CONT, SCM_CDR (xorig));
}
+/* Multi-language support */
+
+SCM scm_lisp_nil;
+SCM scm_lisp_t;
+
+SCM_SYNTAX (s_nil_cond, "nil-cond", scm_makmmacro, scm_m_nil_cond);
+
+SCM
+scm_m_nil_cond (SCM xorig, SCM env)
+{
+ int len = scm_ilength (SCM_CDR (xorig));
+ SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig,
+ scm_s_expression, "nil-cond");
+ return scm_cons (SCM_IM_NIL_COND, SCM_CDR (xorig));
+}
+
+SCM_SYNTAX (s_nil_ify, "nil-ify", scm_makmmacro, scm_m_nil_ify);
+
+SCM
+scm_m_nil_ify (SCM xorig, SCM env)
+{
+ SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1,
+ xorig, scm_s_expression, "nil-ify");
+ return scm_cons (SCM_IM_NIL_IFY, SCM_CDR (xorig));
+}
+
+SCM_SYNTAX (s_t_ify, "t-ify", scm_makmmacro, scm_m_t_ify);
+
+SCM
+scm_m_t_ify (SCM xorig, SCM env)
+{
+ SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1,
+ xorig, scm_s_expression, "t-ify");
+ return scm_cons (SCM_IM_T_IFY, SCM_CDR (xorig));
+}
+
+SCM_SYNTAX (s_0_cond, "0-cond", scm_makmmacro, scm_m_0_cond);
+
+SCM
+scm_m_0_cond (SCM xorig, SCM env)
+{
+ int len = scm_ilength (SCM_CDR (xorig));
+ SCM_ASSYNT (len >= 1 && (len & 1) == 1, xorig,
+ scm_s_expression, "0-cond");
+ return scm_cons (SCM_IM_0_COND, SCM_CDR (xorig));
+}
+
+SCM_SYNTAX (s_0_ify, "0-ify", scm_makmmacro, scm_m_0_ify);
+
+SCM
+scm_m_0_ify (SCM xorig, SCM env)
+{
+ SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1,
+ xorig, scm_s_expression, "0-ify");
+ return scm_cons (SCM_IM_0_IFY, SCM_CDR (xorig));
+}
+
+SCM_SYNTAX (s_1_ify, "1-ify", scm_makmmacro, scm_m_1_ify);
+
+SCM
+scm_m_1_ify (SCM xorig, SCM env)
+{
+ SCM_ASSYNT (scm_ilength (SCM_CDR (xorig)) == 1,
+ xorig, scm_s_expression, "1-ify");
+ return scm_cons (SCM_IM_1_IFY, SCM_CDR (xorig));
+}
+
+SCM_SYNTAX (s_atfop, "@fop", scm_makmmacro, scm_m_atfop);
+
+SCM
+scm_m_atfop (SCM xorig, SCM env)
+{
+ SCM x = SCM_CDR (xorig), vcell;
+ SCM_ASSYNT (scm_ilength (x) >= 1, xorig, scm_s_expression, "@fop");
+ vcell = scm_symbol_fref (SCM_CAR (x));
+ SCM_ASSYNT (SCM_CONSP (vcell), x,
+ "Symbol's function definition is void", NULL);
+ SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (vcell) + scm_tc3_cons_gloc);
+ return x;
+}
+
+SCM_SYNTAX (s_atbind, "@bind", scm_makmmacro, scm_m_atbind);
+
+SCM
+scm_m_atbind (SCM xorig, SCM env)
+{
+ SCM x = SCM_CDR (xorig);
+ SCM_ASSYNT (scm_ilength (x) > 1, xorig, scm_s_expression, "@bind");
+
+ if (SCM_IMP (env))
+ env = SCM_BOOL_F;
+ else
+ {
+ while (SCM_NIMP (SCM_CDR (env)))
+ env = SCM_CDR (env);
+ env = SCM_CAR (env);
+ if (SCM_CONSP (env))
+ env = SCM_BOOL_F;
+ }
+
+ x = SCM_CAR (x);
+ while (SCM_NIMP (x))
+ {
+ SCM_SET_CELL_WORD_0 (x, SCM_UNPACK (scm_sym2vcell (SCM_CAR (x), env, SCM_BOOL_T)) + scm_tc3_cons_gloc);
+ x = SCM_CDR (x);
+ }
+ return scm_cons (SCM_IM_BIND, SCM_CDR (xorig));
+}
+
+SCM
+scm_m_expand_body (SCM xorig, SCM env)
+{
+ SCM form, x = SCM_CDR (xorig), defs = SCM_EOL;
+ char *what = SCM_ISYMCHARS (SCM_CAR (xorig)) + 2;
+
+ while (SCM_NIMP (x))
+ {
+ form = SCM_CAR (x);
+ if (SCM_IMP (form) || SCM_NCONSP (form))
+ break;
+ if (SCM_IMP (SCM_CAR (form)))
+ break;
+ if (!SCM_SYMBOLP (SCM_CAR (form)))
+ break;
+
+ form = scm_macroexp (scm_cons_source (form,
+ SCM_CAR (form),
+ SCM_CDR (form)),
+ env);
+
+ if (SCM_EQ_P (SCM_IM_DEFINE, SCM_CAR (form)))
+ {
+ defs = scm_cons (SCM_CDR (form), defs);
+ x = SCM_CDR(x);
+ }
+ else if (SCM_NIMP(defs))
+ {
+ break;
+ }
+ else if (SCM_EQ_P (SCM_IM_BEGIN, SCM_CAR (form)))
+ {
+ x = scm_append (scm_cons2 (SCM_CDR (form), SCM_CDR (x), SCM_EOL));
+ }
+ else
+ {
+ x = scm_cons (form, SCM_CDR(x));
+ break;
+ }
+ }
+
+ SCM_ASSYNT (SCM_NIMP (x), SCM_CDR (xorig), scm_s_body, what);
+ if (SCM_NIMP (defs))
+ {
+ x = scm_cons (scm_m_letrec1 (SCM_IM_LETREC,
+ SCM_IM_DEFINE,
+ scm_cons2 (scm_sym_define, defs, x),
+ env),
+ SCM_EOL);
+ }
+
+ SCM_DEFER_INTS;
+ SCM_SETCAR (xorig, SCM_CAR (x));
+ SCM_SETCDR (xorig, SCM_CDR (x));
+ SCM_ALLOW_INTS;
+
+ return xorig;
+}
+
+SCM
+scm_macroexp (SCM x, SCM env)
+{
+ SCM res, proc;
+
+ /* Don't bother to produce error messages here. We get them when we
+ eventually execute the code for real. */
+
+ macro_tail:
+ if (SCM_IMP (SCM_CAR (x)) || !SCM_SYMBOLP (SCM_CAR (x)))
+ return x;
+
+#ifdef USE_THREADS
+ {
+ SCM *proc_ptr = scm_lookupcar1 (x, env, 0);
+ if (proc_ptr == NULL)
+ {
+ /* We have lost the race. */
+ goto macro_tail;
+ }
+ proc = *proc_ptr;
+ }
+#else
+ proc = *scm_lookupcar (x, env, 0);
+#endif
+
+ /* Only handle memoizing macros. `Acros' and `macros' are really
+ special forms and should not be evaluated here. */
+
+ if (SCM_IMP (proc)
+ || scm_tc16_macro != SCM_TYP16 (proc)
+ || (int) (SCM_UNPACK_CAR (proc) >> 16) != 2)
+ return x;
+
+ unmemocar (x, env);
+ res = scm_apply (SCM_CDR (proc), x, scm_cons (env, scm_listofnull));
+
+ if (scm_ilength (res) <= 0)
+ res = scm_cons2 (SCM_IM_BEGIN, res, SCM_EOL);
+
+ SCM_DEFER_INTS;
+ SCM_SETCAR (x, SCM_CAR (res));
+ SCM_SETCDR (x, SCM_CDR (res));
+ SCM_ALLOW_INTS;
+
+ goto macro_tail;
+}
+
/* scm_unmemocopy takes a memoized expression together with its
* environment and rewrites it to its original form. Thus, it is the
* inversion of the rewrite rules above. The procedure is not
* display_expression.
*/
-static SCM unmemocopy SCM_P ((SCM x, SCM env));
+/* We should introduce an anti-macro interface so that it is possible
+ * to plug in transformers in both directions from other compilation
+ * units. unmemocopy could then dispatch to anti-macro transformers.
+ * (Those transformers could perhaps be written in slightly more
+ * readable style... :)
+ */
+
+#define SCM_BIT8(x) (127 & SCM_UNPACK (x))
static SCM
-unmemocopy (x, env)
- SCM x;
- SCM env;
+unmemocopy (SCM x, SCM env)
{
SCM ls, z;
#ifdef DEBUG_EXTENSIONS
#endif
switch (SCM_TYP7 (x))
{
- case (127 & SCM_IM_AND):
- ls = z = scm_cons (scm_i_and, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_AND):
+ ls = z = scm_cons (scm_sym_and, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_BEGIN):
- ls = z = scm_cons (scm_i_begin, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_BEGIN):
+ ls = z = scm_cons (scm_sym_begin, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_CASE):
- ls = z = scm_cons (scm_i_case, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_CASE):
+ ls = z = scm_cons (scm_sym_case, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_COND):
- ls = z = scm_cons (scm_i_cond, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_COND):
+ ls = z = scm_cons (scm_sym_cond, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_DO):
- ls = scm_cons (scm_i_do, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_DO):
+ ls = scm_cons (scm_sym_do, SCM_UNSPECIFIED);
goto transform;
- case (127 & SCM_IM_IF):
- ls = z = scm_cons (scm_i_if, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_IF):
+ ls = z = scm_cons (scm_sym_if, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_LET):
- ls = scm_cons (scm_i_let, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_LET):
+ ls = scm_cons (scm_sym_let, SCM_UNSPECIFIED);
goto transform;
- case (127 & SCM_IM_LETREC):
+ case SCM_BIT8(SCM_IM_LETREC):
{
SCM f, v, e, s;
- ls = scm_cons (scm_i_letrec, SCM_UNSPECIFIED);
+ ls = scm_cons (scm_sym_letrec, SCM_UNSPECIFIED);
transform:
x = SCM_CDR (x);
+ /* binding names */
f = v = SCM_CAR (x);
x = SCM_CDR (x);
z = EXTEND_ENV (f, SCM_EOL, env);
+ /* inits */
e = scm_reverse (unmemocopy (SCM_CAR (x),
- SCM_CAR (ls) == scm_i_letrec ? z : env));
+ SCM_EQ_P (SCM_CAR (ls), scm_sym_letrec) ? z : env));
env = z;
- s = SCM_CAR (ls) == scm_i_do
+ /* increments */
+ s = SCM_EQ_P (SCM_CAR (ls), scm_sym_do)
? scm_reverse (unmemocopy (SCM_CDR (SCM_CDR (SCM_CDR (x))), env))
: f;
+ /* build transformed binding list */
z = SCM_EOL;
do
{
z = scm_acons (SCM_CAR (v),
scm_cons (SCM_CAR (e),
- SCM_CAR (s) == SCM_CAR (v)
+ SCM_EQ_P (SCM_CAR (s), SCM_CAR (v))
? SCM_EOL
: scm_cons (SCM_CAR (s), SCM_EOL)),
z);
e = SCM_CDR (e);
s = SCM_CDR (s);
}
- while SCM_NIMP (v);
+ while (SCM_NIMP (v));
z = scm_cons (z, SCM_UNSPECIFIED);
SCM_SETCDR (ls, z);
- if (SCM_CAR (ls) == scm_i_do)
+ if (SCM_EQ_P (SCM_CAR (ls), scm_sym_do))
{
x = SCM_CDR (x);
+ /* test clause */
SCM_SETCDR (z, scm_cons (unmemocopy (SCM_CAR (x), env),
SCM_UNSPECIFIED));
z = SCM_CDR (z);
x = (SCM) (SCM_CARLOC (SCM_CDR (x)) - 1);
+ /* body forms are now to be found in SCM_CDR (x)
+ (this is how *real* code look like! :) */
}
break;
}
- case (127 & SCM_IM_LETSTAR):
+ case SCM_BIT8(SCM_IM_LETSTAR):
{
SCM b, y;
x = SCM_CDR (x);
if (SCM_IMP (b))
{
SCM_SETCDR (y, SCM_EOL);
- ls = scm_cons (scm_i_let, z = scm_cons (y, SCM_UNSPECIFIED));
+ ls = scm_cons (scm_sym_let, z = scm_cons (y, SCM_UNSPECIFIED));
break;
}
do
env = EXTEND_ENV (SCM_CAR (b), SCM_BOOL_F, env);
b = SCM_CDR (SCM_CDR (b));
}
- while SCM_NIMP (b);
+ while (SCM_NIMP (b));
SCM_SETCDR (z, SCM_EOL);
letstar:
- ls = scm_cons (scm_i_letstar, z = scm_cons (y, SCM_UNSPECIFIED));
+ ls = scm_cons (scm_sym_letstar, z = scm_cons (y, SCM_UNSPECIFIED));
break;
}
- case (127 & SCM_IM_OR):
- ls = z = scm_cons (scm_i_or, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_OR):
+ ls = z = scm_cons (scm_sym_or, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_LAMBDA):
+ case SCM_BIT8(SCM_IM_LAMBDA):
x = SCM_CDR (x);
- ls = scm_cons (scm_i_lambda,
+ ls = scm_cons (scm_sym_lambda,
z = scm_cons (SCM_CAR (x), SCM_UNSPECIFIED));
env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, env);
break;
- case (127 & SCM_IM_QUOTE):
- ls = z = scm_cons (scm_i_quote, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_QUOTE):
+ ls = z = scm_cons (scm_sym_quote, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_SET):
- ls = z = scm_cons (scm_i_set, SCM_UNSPECIFIED);
+ case SCM_BIT8(SCM_IM_SET_X):
+ ls = z = scm_cons (scm_sym_set_x, SCM_UNSPECIFIED);
break;
- case (127 & SCM_IM_DEFINE):
+ case SCM_BIT8(SCM_IM_DEFINE):
{
SCM n;
x = SCM_CDR (x);
- ls = scm_cons (scm_i_define,
+ ls = scm_cons (scm_sym_define,
z = scm_cons (n = SCM_CAR (x), SCM_UNSPECIFIED));
if (SCM_NNULLP (env))
SCM_SETCAR (SCM_CAR (env), scm_cons (n, SCM_CAR (SCM_CAR (env))));
break;
}
- case (127 & SCM_MAKISYM (0)):
+ case SCM_BIT8(SCM_MAKISYM (0)):
z = SCM_CAR (x);
if (!SCM_ISYMP (z))
goto unmemo;
- switch SCM_ISYMNUM (z)
+ switch (SCM_ISYMNUM (z))
{
case (SCM_ISYMNUM (SCM_IM_APPLY)):
- ls = z = scm_cons (scm_i_atapply, SCM_UNSPECIFIED);
+ ls = z = scm_cons (scm_sym_atapply, SCM_UNSPECIFIED);
goto loop;
case (SCM_ISYMNUM (SCM_IM_CONT)):
- ls = z = scm_cons (scm_i_atcall_cc, SCM_UNSPECIFIED);
+ ls = z = scm_cons (scm_sym_atcall_cc, SCM_UNSPECIFIED);
+ goto loop;
+ case (SCM_ISYMNUM (SCM_IM_DELAY)):
+ ls = z = scm_cons (scm_sym_delay, SCM_UNSPECIFIED);
+ x = SCM_CDR (x);
goto loop;
default:
/* appease the Sun compiler god: */ ;
loop:
while (SCM_CELLP (x = SCM_CDR (x)) && SCM_ECONSP (x))
{
+ if (SCM_IMP (SCM_CAR (x)) && SCM_ISYMP (SCM_CAR (x)))
+ /* skip body markers */
+ continue;
SCM_SETCDR (z, unmemocar (scm_cons (unmemocopy (SCM_CAR (x), env),
SCM_UNSPECIFIED),
env));
SCM
-scm_unmemocopy (x, env)
- SCM x;
- SCM env;
+scm_unmemocopy (SCM x, SCM env)
{
if (SCM_NNULLP (env))
/* Make a copy of the lowest frame to protect it from
#ifndef SCM_RECKLESS
int
-scm_badargsp (formals, args)
- SCM formals;
- SCM args;
+scm_badargsp (SCM formals, SCM args)
{
- while SCM_NIMP
- (formals)
+ while (SCM_NIMP (formals))
{
- if SCM_NCONSP
- (formals) return 0;
- if SCM_IMP
- (args) return 1;
+ if (SCM_NCONSP (formals))
+ return 0;
+ if (SCM_IMP(args))
+ return 1;
formals = SCM_CDR (formals);
args = SCM_CDR (args);
}
\f
SCM
-scm_eval_args (l, env, proc)
- SCM l;
- SCM env;
- SCM proc;
+scm_eval_args (SCM l, SCM env, SCM proc)
{
SCM results = SCM_EOL, *lloc = &results, res;
while (SCM_NIMP (l))
else
res = EVALCELLCAR (l, env);
}
- else if (SCM_TYP3 (l) == 1)
+ else if (SCM_TYP3 (l) == scm_tc3_cons_gloc)
{
- if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0)
+ scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell];
+ if (vcell == 0)
res = SCM_CAR (l); /* struct planted in code */
+ else
+ res = SCM_PACK (vcell);
}
else
goto wrongnumargs;
return results;
}
+SCM
+scm_eval_body (SCM code, SCM env)
+{
+ SCM next;
+ again:
+ next = code;
+ while (SCM_NNULLP (next = SCM_CDR (next)))
+ {
+ if (SCM_IMP (SCM_CAR (code)))
+ {
+ if (SCM_ISYMP (SCM_CAR (code)))
+ {
+ code = scm_m_expand_body (code, env);
+ goto again;
+ }
+ }
+ else
+ SCM_XEVAL (SCM_CAR (code), env);
+ code = next;
+ }
+ return SCM_XEVALCAR (code, env);
+}
+
#endif /* !DEVAL */
{ ++debug.info; debug.info->a.proc = p; debug.info->a.args = l; }
#undef ENTER_APPLY
#define ENTER_APPLY \
-{\
+do { \
SCM_SET_ARGSREADY (debug);\
if (CHECK_APPLY && SCM_TRAPS_P)\
if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\
{\
- SCM tmp, tail = SCM_TRACED_FRAME_P (debug) ? SCM_BOOL_T : SCM_BOOL_F;\
+ SCM tmp, tail = SCM_BOOL(SCM_TRACED_FRAME_P (debug)); \
SCM_SET_TRACED_FRAME (debug); \
if (SCM_CHEAPTRAPS_P)\
{\
tmp = scm_make_debugobj (&debug);\
- scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\
+ scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\
}\
else\
{\
scm_make_cont (&tmp);\
if (!setjmp (SCM_JMPBUF (tmp)))\
- scm_ithrow (scm_i_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\
+ scm_ithrow (scm_sym_apply_frame, scm_cons2 (tmp, tail, SCM_EOL), 0);\
}\
}\
-}
+} while (0)
#undef RETURN
#define RETURN(e) {proc = (e); goto exit;}
#ifdef STACK_CHECKING
*/
-SCM (*scm_ceval_ptr) SCM_P ((SCM x, SCM env));
+SCM (*scm_ceval_ptr) (SCM x, SCM env);
/* scm_last_debug_frame contains a pointer to the last debugging
* information stack frame. It is accessed very often from the
"Record procedure names at definition." },
{ SCM_OPTION_BOOLEAN, "backwards", 0,
"Display backtrace in anti-chronological order." },
+ { SCM_OPTION_INTEGER, "width", 79, "Maximal width of backtrace." },
{ SCM_OPTION_INTEGER, "indent", 10, "Maximal indentation in backtrace." },
{ SCM_OPTION_INTEGER, "frames", 3,
"Maximum number of tail-recursive frames in backtrace." },
{ SCM_OPTION_BOOLEAN, "exit-frame", 0, "Trap when exiting eval or apply." }
};
-SCM_PROC (s_eval_options_interface, "eval-options-interface", 0, 1, 0, scm_eval_options_interface);
-
-SCM
-scm_eval_options_interface (SCM setting)
+SCM_DEFINE (scm_eval_options_interface, "eval-options-interface", 0, 1, 0,
+ (SCM setting),
+ "")
+#define FUNC_NAME s_scm_eval_options_interface
{
SCM ans;
SCM_DEFER_INTS;
ans = scm_options (setting,
scm_eval_opts,
SCM_N_EVAL_OPTIONS,
- s_eval_options_interface);
+ FUNC_NAME);
scm_eval_stack = SCM_EVAL_STACK * sizeof (void *);
SCM_ALLOW_INTS;
return ans;
}
+#undef FUNC_NAME
-SCM_PROC (s_evaluator_traps, "evaluator-traps-interface", 0, 1, 0, scm_evaluator_traps);
-
-SCM
-scm_evaluator_traps (setting)
- SCM setting;
+SCM_DEFINE (scm_evaluator_traps, "evaluator-traps-interface", 0, 1, 0,
+ (SCM setting),
+ "")
+#define FUNC_NAME s_scm_evaluator_traps
{
SCM ans;
SCM_DEFER_INTS;
ans = scm_options (setting,
scm_evaluator_trap_table,
SCM_N_EVALUATOR_TRAPS,
- s_evaluator_traps);
+ FUNC_NAME);
SCM_RESET_DEBUG_MODE;
- SCM_ALLOW_INTS
+ SCM_ALLOW_INTS;
return ans;
}
+#undef FUNC_NAME
SCM
-scm_deval_args (l, env, proc, lloc)
- SCM l, env, proc, *lloc;
+scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc)
{
SCM *results = lloc, res;
while (SCM_NIMP (l))
else
res = EVALCELLCAR (l, env);
}
- else if (SCM_TYP3 (l) == 1)
+ else if (SCM_TYP3 (l) == scm_tc3_cons_gloc)
{
- if ((res = SCM_GLOC_VAL (SCM_CAR (l))) == 0)
+ scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (l) [scm_vtable_index_vcell];
+ if (vcell == 0)
res = SCM_CAR (l); /* struct planted in code */
+ else
+ res = SCM_PACK (vcell);
}
else
goto wrongnumargs;
*/
#ifndef DEVAL
-#ifdef SCM_FLOATS
-#define CHECK_EQVISH(A,B) (((A) == (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B)))))
-#else
-#define CHECK_EQVISH(A,B) ((A) == (B))
-#endif
+#define CHECK_EQVISH(A,B) (SCM_EQ_P ((A), (B)) || (SCM_NFALSEP (scm_eqv_p ((A), (B)))))
#endif /* DEVAL */
#define BUILTIN_RPASUBR /* Handle rpsubrs and asubrs without calling apply */
#if 0
SCM
-scm_ceval (x, env)
- SCM x;
- SCM env;
+scm_ceval (SCM x, SCM env)
{}
#endif
#if 0
SCM
-scm_deval (x, env)
- SCM x;
- SCM env;
+scm_deval (SCM x, SCM env)
{}
#endif
SCM
-SCM_CEVAL (x, env)
- SCM x;
- SCM env;
+SCM_CEVAL (SCM x, SCM env)
{
union
{
scm_debug_info *debug_info_end;
debug.prev = scm_last_debug_frame;
debug.status = scm_debug_eframe_size;
+ /*
+ * The debug.vect contains twice as much scm_debug_info frames as the
+ * user has specified with (debug-set! frames <n>).
+ *
+ * Even frames are eval frames, odd frames are apply frames.
+ */
debug.vect = (scm_debug_info *) alloca (scm_debug_eframe_size
* sizeof (debug.vect[0]));
debug.info = debug.vect;
scm_last_debug_frame = &debug;
#endif
#ifdef EVAL_STACK_CHECKING
- if (SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc)
- && scm_stack_checking_enabled_p)
+ if (scm_stack_checking_enabled_p
+ && SCM_STACK_OVERFLOW_P ((SCM_STACKITEM *) &proc))
{
#ifdef DEVAL
debug.info->e.exp = x;
SCM_CLEAR_ARGSREADY (debug);
if (SCM_OVERFLOWP (debug))
--debug.info;
+ /*
+ * In theory, this should be the only place where it is necessary to
+ * check for space in debug.vect since both eval frames and
+ * available space are even.
+ *
+ * For this to be the case, however, it is necessary that primitive
+ * special forms which jump back to `loop', `begin' or some similar
+ * label call PREP_APPLY. A convenient way to do this is to jump to
+ * `loopnoap' or `cdrxnoap'.
+ */
else if (++debug.info >= debug_info_end)
{
SCM_SET_OVERFLOW (debug);
if (CHECK_ENTRY && SCM_TRAPS_P)
if (SCM_ENTER_FRAME_P || (SCM_BREAKPOINTS_P && SRCBRKP (x)))
{
- SCM tail = SCM_TAILRECP (debug) ? SCM_BOOL_T : SCM_BOOL_F;
+ SCM tail = SCM_BOOL(SCM_TAILRECP (debug));
SCM_SET_TAILREC (debug);
if (SCM_CHEAPTRAPS_P)
t.arg1 = scm_make_debugobj (&debug);
goto dispatch;
}
}
- scm_ithrow (scm_i_enter_frame,
+ scm_ithrow (scm_sym_enter_frame,
scm_cons2 (t.arg1, tail,
scm_cons (scm_unmemocopy (x, env), SCM_EOL)),
0);
x = scm_cons (x, SCM_UNDEFINED);
goto retval;
- case (127 & SCM_IM_AND):
+ case SCM_BIT8(SCM_IM_AND):
x = SCM_CDR (x);
t.arg1 = x;
while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1)))
PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
goto carloop;
- case (127 & SCM_IM_BEGIN):
+ case SCM_BIT8(SCM_IM_BEGIN):
cdrxnoap:
PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
cdrxbegin:
t.arg1 = x;
while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1)))
{
- SIDEVAL (SCM_CAR (x), env);
+ if (SCM_IMP (SCM_CAR (x)))
+ {
+ if (SCM_ISYMP (SCM_CAR (x)))
+ {
+ x = scm_m_expand_body (x, env);
+ goto begin;
+ }
+ }
+ else
+ SCM_CEVAL (SCM_CAR (x), env);
x = t.arg1;
}
if (SCM_SYMBOLP (SCM_CAR (x)))
{
retval:
- RETURN (*scm_lookupcar (x, env))
+ RETURN (*scm_lookupcar (x, env, 1))
}
x = SCM_CAR (x);
goto loop; /* tail recurse */
- case (127 & SCM_IM_CASE):
+ case SCM_BIT8(SCM_IM_CASE):
x = SCM_CDR (x);
t.arg1 = EVALCAR (x, env);
while (SCM_NIMP (x = SCM_CDR (x)))
{
proc = SCM_CAR (x);
- if (scm_i_else == SCM_CAR (proc))
+ if (SCM_EQ_P (scm_sym_else, SCM_CAR (proc)))
{
x = SCM_CDR (proc);
PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
RETURN (SCM_UNSPECIFIED)
- case (127 & SCM_IM_COND):
+ case SCM_BIT8(SCM_IM_COND):
while (SCM_NIMP (x = SCM_CDR (x)))
{
proc = SCM_CAR (x);
{
RETURN (t.arg1)
}
- if (scm_i_arrow != SCM_CAR (x))
+ if (! SCM_EQ_P (scm_sym_arrow, SCM_CAR (x)))
{
PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
goto begin;
RETURN (SCM_UNSPECIFIED)
- case (127 & SCM_IM_DO):
+ case SCM_BIT8(SCM_IM_DO):
x = SCM_CDR (x);
proc = SCM_CAR (SCM_CDR (x)); /* inits */
t.arg1 = SCM_EOL; /* values */
x = SCM_CDR (SCM_CDR (x));
while (proc = SCM_CAR (x), SCM_FALSEP (EVALCAR (proc, env)))
{
- for (proc = SCM_CAR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc))
+ for (proc = SCM_CADR (x); SCM_NIMP (proc); proc = SCM_CDR (proc))
{
t.arg1 = SCM_CAR (proc); /* body */
SIDEVAL (t.arg1, env);
}
- for (t.arg1 = SCM_EOL, proc = SCM_CDR (SCM_CDR (x)); SCM_NIMP (proc); proc = SCM_CDR (proc))
+ for (t.arg1 = SCM_EOL, proc = SCM_CDDR (x);
+ SCM_NIMP (proc);
+ proc = SCM_CDR (proc))
t.arg1 = scm_cons (EVALCAR (proc, env), t.arg1); /* steps */
env = EXTEND_ENV (SCM_CAR (SCM_CAR (env)), t.arg1, SCM_CDR (env));
}
goto begin;
- case (127 & SCM_IM_IF):
+ case SCM_BIT8(SCM_IM_IF):
x = SCM_CDR (x);
if (SCM_NFALSEP (EVALCAR (x, env)))
x = SCM_CDR (x);
goto carloop;
- case (127 & SCM_IM_LET):
+ case SCM_BIT8(SCM_IM_LET):
x = SCM_CDR (x);
proc = SCM_CAR (SCM_CDR (x));
t.arg1 = SCM_EOL;
goto cdrxnoap;
- case (127 & SCM_IM_LETREC):
+ case SCM_BIT8(SCM_IM_LETREC):
x = SCM_CDR (x);
env = EXTEND_ENV (SCM_CAR (x), scm_undefineds, env);
x = SCM_CDR (x);
goto cdrxnoap;
- case (127 & SCM_IM_LETSTAR):
+ case SCM_BIT8(SCM_IM_LETSTAR):
x = SCM_CDR (x);
proc = SCM_CAR (x);
if (SCM_IMP (proc))
while (SCM_NIMP (proc = SCM_CDR (proc)));
goto cdrxnoap;
- case (127 & SCM_IM_OR):
+ case SCM_BIT8(SCM_IM_OR):
x = SCM_CDR (x);
t.arg1 = x;
while (SCM_NNULLP (t.arg1 = SCM_CDR (t.arg1)))
goto carloop;
- case (127 & SCM_IM_LAMBDA):
+ case SCM_BIT8(SCM_IM_LAMBDA):
RETURN (scm_closure (SCM_CDR (x), env));
- case (127 & SCM_IM_QUOTE):
+ case SCM_BIT8(SCM_IM_QUOTE):
RETURN (SCM_CAR (SCM_CDR (x)));
- case (127 & SCM_IM_SET):
+ case SCM_BIT8(SCM_IM_SET_X):
x = SCM_CDR (x);
proc = SCM_CAR (x);
- switch (7 & (int) proc)
+ switch (SCM_ITAG3 (proc))
{
- case 0:
- t.lloc = scm_lookupcar (x, env);
+ case scm_tc3_cons:
+ t.lloc = scm_lookupcar (x, env, 1);
break;
- case 1:
+ case scm_tc3_cons_gloc:
t.lloc = SCM_GLOC_VAL_LOC (proc);
break;
#ifdef MEMOIZE_LOCALS
- case 4:
+ case scm_tc3_imm24:
t.lloc = scm_ilookup (proc, env);
break;
#endif
#endif
- case (127 & SCM_IM_DEFINE): /* only for internal defines */
- x = SCM_CDR (x);
- proc = SCM_CAR (x);
- x = SCM_CDR (x);
- x = evalcar (x, env);
-#ifdef DEBUG_EXTENSIONS
- if (SCM_REC_PROCNAMES_P && SCM_NIMP (x))
- {
- t.arg1 = x;
- proc:
- if (SCM_CLOSUREP (t.arg1)
- /* Only the first definition determines the name. */
- && (scm_procedure_property (t.arg1, scm_i_inner_name)
- == SCM_BOOL_F))
- scm_set_procedure_property_x (t.arg1, scm_i_inner_name, proc);
- else if (SCM_TYP16 (t.arg1) == scm_tc16_macro
- && SCM_CDR (t.arg1) != t.arg1)
- {
- t.arg1 = SCM_CDR (t.arg1);
- goto proc;
- }
- }
-#endif
- env = SCM_CAR (env);
- SCM_DEFER_INTS;
- SCM_SETCAR (env, scm_cons (proc, SCM_CAR (env)));
- SCM_SETCDR (env, scm_cons (x, SCM_CDR (env)));
- SCM_ALLOW_INTS;
- RETURN (SCM_UNSPECIFIED);
-
+ case SCM_BIT8(SCM_IM_DEFINE): /* only for internal defines */
+ scm_misc_error (NULL, "Bad define placement", SCM_EOL);
/* new syntactic forms go here. */
- case (127 & SCM_MAKISYM (0)):
+ case SCM_BIT8(SCM_MAKISYM (0)):
proc = SCM_CAR (x);
SCM_ASRTGO (SCM_ISYMP (proc), badfun);
switch SCM_ISYMNUM (proc)
if (scm_badargsp (SCM_CAR (SCM_CODE (proc)), t.arg1))
goto wrongnumargs;
#endif
+ ENTER_APPLY;
/* Copy argument list */
if (SCM_IMP (t.arg1))
argl = t.arg1;
x = SCM_CODE (proc);
goto cdrxbegin;
}
- proc = scm_i_apply;
+ proc = scm_f_apply;
goto evapply;
case (SCM_ISYMNUM (SCM_IM_CONT)):
{
SCM val;
val = SCM_THROW_VALUE (t.arg1);
- RETURN (val);
+ RETURN (val)
}
proc = SCM_CDR (x);
proc = evalcar (proc, env);
ENTER_APPLY;
goto evap1;
+ case (SCM_ISYMNUM (SCM_IM_DELAY)):
+ RETURN (scm_makprom (scm_closure (SCM_CDR (x), env)))
+
+ case (SCM_ISYMNUM (SCM_IM_DISPATCH)):
+ proc = SCM_CADR (x); /* unevaluated operands */
+ PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
+ if (SCM_IMP (proc))
+ arg2 = *scm_ilookup (proc, env);
+ else if (SCM_NCONSP (proc))
+ {
+ if (SCM_NCELLP (proc))
+ arg2 = SCM_GLOC_VAL (proc);
+ else
+ arg2 = *scm_lookupcar (SCM_CDR (x), env, 1);
+ }
+ else
+ {
+ arg2 = scm_cons (EVALCAR (proc, env), SCM_EOL);
+ t.lloc = SCM_CDRLOC (arg2);
+ while (SCM_NIMP (proc = SCM_CDR (proc)))
+ {
+ *t.lloc = scm_cons (EVALCAR (proc, env), SCM_EOL);
+ t.lloc = SCM_CDRLOC (*t.lloc);
+ }
+ }
+
+ type_dispatch:
+ /* The type dispatch code is duplicated here
+ * (c.f. objects.c:scm_mcache_compute_cmethod) since that
+ * cuts down execution time for type dispatch to 50%.
+ */
+ {
+ int i, n, end, mask;
+ SCM z = SCM_CDDR (x);
+ n = SCM_INUM (SCM_CAR (z)); /* maximum number of specializers */
+ proc = SCM_CADR (z);
+
+ if (SCM_NIMP (proc))
+ {
+ /* Prepare for linear search */
+ mask = -1;
+ i = 0;
+ end = SCM_LENGTH (proc);
+ }
+ else
+ {
+ /* Compute a hash value */
+ int hashset = SCM_INUM (proc);
+ int j = n;
+ mask = SCM_INUM (SCM_CAR (z = SCM_CDDR (z)));
+ proc = SCM_CADR (z);
+ i = 0;
+ t.arg1 = arg2;
+ if (SCM_NIMP (t.arg1))
+ do
+ {
+ i += SCM_STRUCT_DATA (scm_class_of (SCM_CAR (t.arg1)))
+ [scm_si_hashsets + hashset];
+ t.arg1 = SCM_CDR (t.arg1);
+ }
+ while (--j && SCM_NIMP (t.arg1));
+ i &= mask;
+ end = i;
+ }
+
+ /* Search for match */
+ do
+ {
+ int j = n;
+ z = SCM_VELTS (proc)[i];
+ t.arg1 = arg2; /* list of arguments */
+ if (SCM_NIMP (t.arg1))
+ do
+ {
+ /* More arguments than specifiers => CLASS != ENV */
+ if (! SCM_EQ_P (scm_class_of (SCM_CAR (t.arg1)), SCM_CAR (z)))
+ goto next_method;
+ t.arg1 = SCM_CDR (t.arg1);
+ z = SCM_CDR (z);
+ }
+ while (--j && SCM_NIMP (t.arg1));
+ /* Fewer arguments than specifiers => CAR != ENV */
+ if (!(SCM_IMP (SCM_CAR (z)) || SCM_CONSP (SCM_CAR (z))))
+ goto next_method;
+ apply_cmethod:
+ env = EXTEND_ENV (SCM_CAR (SCM_CMETHOD_CODE (z)),
+ arg2,
+ SCM_CMETHOD_ENV (z));
+ x = SCM_CMETHOD_CODE (z);
+ goto cdrxbegin;
+ next_method:
+ i = (i + 1) & mask;
+ } while (i != end);
+
+ z = scm_memoize_method (x, arg2);
+ goto apply_cmethod;
+ }
+
+ case (SCM_ISYMNUM (SCM_IM_SLOT_REF)):
+ x = SCM_CDR (x);
+ t.arg1 = EVALCAR (x, env);
+ RETURN (SCM_PACK (SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CADR (x))]))
+
+ case (SCM_ISYMNUM (SCM_IM_SLOT_SET_X)):
+ x = SCM_CDR (x);
+ t.arg1 = EVALCAR (x, env);
+ x = SCM_CDR (x);
+ proc = SCM_CDR (x);
+ SCM_STRUCT_DATA (t.arg1) [SCM_INUM (SCM_CAR (x))]
+ = SCM_UNPACK (EVALCAR (proc, env));
+ RETURN (SCM_UNSPECIFIED)
+
+ case (SCM_ISYMNUM (SCM_IM_NIL_COND)):
+ proc = SCM_CDR (x);
+ while (SCM_NIMP (x = SCM_CDR (proc)))
+ {
+ if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env))
+ || SCM_EQ_P (t.arg1, scm_lisp_nil)))
+ {
+ if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED))
+ RETURN (t.arg1);
+ PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
+ goto carloop;
+ }
+ proc = SCM_CDR (x);
+ }
+ x = proc;
+ PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
+ goto carloop;
+
+ case (SCM_ISYMNUM (SCM_IM_NIL_IFY)):
+ x = SCM_CDR (x);
+ RETURN ((SCM_FALSEP (proc = EVALCAR (x, env)) || SCM_NULLP (proc))
+ ? scm_lisp_nil
+ : proc)
+
+ case (SCM_ISYMNUM (SCM_IM_T_IFY)):
+ x = SCM_CDR (x);
+ RETURN (SCM_NFALSEP (EVALCAR (x, env)) ? scm_lisp_t : scm_lisp_nil)
+
+ case (SCM_ISYMNUM (SCM_IM_0_COND)):
+ proc = SCM_CDR (x);
+ while (SCM_NIMP (x = SCM_CDR (proc)))
+ {
+ if (!(SCM_FALSEP (t.arg1 = EVALCAR (proc, env))
+ || SCM_EQ_P (t.arg1, SCM_INUM0)))
+ {
+ if (SCM_EQ_P (SCM_CAR (x), SCM_UNSPECIFIED))
+ RETURN (t.arg1);
+ PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
+ goto carloop;
+ }
+ proc = SCM_CDR (x);
+ }
+ x = proc;
+ PREP_APPLY (SCM_UNDEFINED, SCM_EOL);
+ goto carloop;
+
+ case (SCM_ISYMNUM (SCM_IM_0_IFY)):
+ x = SCM_CDR (x);
+ RETURN (SCM_FALSEP (proc = EVALCAR (x, env))
+ ? SCM_INUM0
+ : proc)
+
+ case (SCM_ISYMNUM (SCM_IM_1_IFY)):
+ x = SCM_CDR (x);
+ RETURN (SCM_NFALSEP (EVALCAR (x, env))
+ ? SCM_MAKINUM (1)
+ : SCM_INUM0)
+
+ case (SCM_ISYMNUM (SCM_IM_BIND)):
+ x = SCM_CDR (x);
+
+ t.arg1 = SCM_CAR (x);
+ arg2 = SCM_CDAR (env);
+ while (SCM_NIMP (arg2))
+ {
+ proc = SCM_GLOC_VAL (SCM_CAR (t.arg1));
+ SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L),
+ SCM_CAR (arg2));
+ SCM_SETCAR (arg2, proc);
+ t.arg1 = SCM_CDR (t.arg1);
+ arg2 = SCM_CDR (arg2);
+ }
+ t.arg1 = SCM_CAR (x);
+ scm_dynwinds = scm_acons (t.arg1, SCM_CDAR (env), scm_dynwinds);
+
+ arg2 = x = SCM_CDR (x);
+ while (SCM_NNULLP (arg2 = SCM_CDR (arg2)))
+ {
+ SIDEVAL (SCM_CAR (x), env);
+ x = arg2;
+ }
+ proc = EVALCAR (x, env);
+
+ scm_dynwinds = SCM_CDR (scm_dynwinds);
+ arg2 = SCM_CDAR (env);
+ while (SCM_NIMP (arg2))
+ {
+ SCM_SETCDR (SCM_PACK (SCM_UNPACK (SCM_CAR (t.arg1)) - 1L),
+ SCM_CAR (arg2));
+ t.arg1 = SCM_CDR (t.arg1);
+ arg2 = SCM_CDR (arg2);
+ }
+
+ RETURN (proc)
+
default:
goto badfun;
}
badfun:
/* scm_everr (x, env,...) */
scm_misc_error (NULL,
- "Wrong type to apply: %S",
+ "Wrong type to apply: ~S",
scm_listify (proc, SCM_UNDEFINED));
case scm_tc7_vector:
case scm_tc7_wvect:
+#ifdef HAVE_ARRAYS
case scm_tc7_bvect:
case scm_tc7_byvect:
case scm_tc7_svect:
case scm_tc7_fvect:
case scm_tc7_dvect:
case scm_tc7_cvect:
-#ifdef LONGLONGS
+#ifdef HAVE_LONG_LONGS
case scm_tc7_llvect:
+#endif
#endif
case scm_tc7_string:
case scm_tc7_substring:
#ifdef CCLO
case scm_tc7_cclo:
#endif
+ case scm_tc7_pws:
case scm_tcs_subrs:
RETURN (x);
#ifdef MEMOIZE_LOCALS
- case (127 & SCM_ILOC00):
+ case SCM_BIT8(SCM_ILOC00):
proc = *scm_ilookup (SCM_CAR (x), env);
SCM_ASRTGO (SCM_NIMP (proc), badfun);
#ifndef SCM_RECKLESS
#endif /* ifdef MEMOIZE_LOCALS */
- case scm_tcs_cons_gloc:
- proc = SCM_GLOC_VAL (SCM_CAR (x));
- if (proc == 0)
+ case scm_tcs_cons_gloc: {
+ scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell];
+ if (vcell == 0) {
/* This is a struct implanted in the code, not a gloc. */
RETURN (x);
- SCM_ASRTGO (SCM_NIMP (proc), badfun);
+ } else {
+ proc = SCM_PACK (vcell);
+ SCM_ASRTGO (SCM_NIMP (proc), badfun);
#ifndef SCM_RECKLESS
#ifdef SCM_CAUTIOUS
- goto checkargs;
+ goto checkargs;
#endif
#endif
+ }
break;
-
+ }
case scm_tcs_cons_nimcar:
if (SCM_SYMBOLP (SCM_CAR (x)))
{
#ifdef USE_THREADS
- t.lloc = scm_lookupcar1 (x, env);
+ t.lloc = scm_lookupcar1 (x, env, 1);
if (t.lloc == NULL)
{
/* we have lost the race, start again. */
}
proc = *t.lloc;
#else
- proc = *scm_lookupcar (x, env);
+ proc = *scm_lookupcar (x, env, 1);
#endif
if (SCM_IMP (proc))
#ifdef DEVAL
SCM_CLEAR_MACROEXP (debug);
#endif
- switch ((int) (SCM_CAR (proc) >> 16))
+ switch ((int) (SCM_UNPACK_CAR (proc) >> 16))
{
case 2:
if (scm_ilength (t.arg1) <= 0)
goto dispatch;
}
/* Prevent memoizing of debug info expression. */
- debug.info->e.exp = scm_cons (SCM_CAR (x), SCM_CDR (x));
- scm_set_source_properties_x (debug.info->e.exp,
- scm_source_properties (x));
+ debug.info->e.exp = scm_cons_source (debug.info->e.exp,
+ SCM_CAR (x),
+ SCM_CDR (x));
#endif
SCM_DEFER_INTS;
SCM_SETCAR (x, SCM_CAR (t.arg1));
PREP_APPLY (proc, SCM_EOL);
if (SCM_NULLP (SCM_CDR (x))) {
ENTER_APPLY;
+ evap0:
switch (SCM_TYP7 (proc))
{ /* no arguments given */
case scm_tc7_subr_0:
#endif
goto evap1;
#endif
+ case scm_tc7_pws:
+ proc = SCM_PROCEDURE (proc);
+#ifdef DEVAL
+ debug.info->a.proc = proc;
+#endif
+ goto evap0;
case scm_tcs_closures:
x = SCM_CODE (proc);
env = EXTEND_ENV (SCM_CAR (x), SCM_EOL, SCM_ENV (proc));
goto cdrxbegin;
case scm_tcs_cons_gloc:
- if (!SCM_I_OPERATORP (proc))
+ if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC)
+ {
+ x = SCM_ENTITY_PROCEDURE (proc);
+ arg2 = SCM_EOL;
+ goto type_dispatch;
+ }
+ else if (!SCM_I_OPERATORP (proc))
goto badfun;
else
{
- x = (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_0 (proc)
- : SCM_OPERATOR_PROC_0 (proc));
- if (SCM_NIMP (x))
- {
- if (SCM_TYP7 (x) == scm_tc7_subr_1)
- RETURN (SCM_SUBRF (x) (proc))
- else if (SCM_CLOSUREP (x))
- {
- t.arg1 = proc;
- proc = x;
+ t.arg1 = proc;
+ proc = (SCM_I_ENTITYP (proc)
+ ? SCM_ENTITY_PROCEDURE (proc)
+ : SCM_OPERATOR_PROCEDURE (proc));
#ifdef DEVAL
- debug.info->a.args = scm_cons (t.arg1, SCM_EOL);
- debug.info->a.proc = proc;
+ debug.info->a.proc = proc;
+ debug.info->a.args = scm_cons (t.arg1, SCM_EOL);
#endif
- goto clos1;
- }
- }
- /* Fall through. */
+ if (SCM_NIMP (proc))
+ goto evap1;
+ else
+ goto badfun;
}
case scm_tc7_contin:
case scm_tc7_subr_1:
else
t.arg1 = EVALCELLCAR (x, env);
}
- else if (SCM_TYP3 (x) == 1)
+ else if (SCM_TYP3 (x) == scm_tc3_cons_gloc)
{
- if ((t.arg1 = SCM_GLOC_VAL (SCM_CAR (x))) == 0)
+ scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell];
+ if (vcell == 0)
t.arg1 = SCM_CAR (x); /* struct planted in code */
+ else
+ t.arg1 = SCM_PACK (vcell);
}
else
goto wrongnumargs;
case scm_tc7_subr_1o:
RETURN (SCM_SUBRF (proc) (t.arg1));
case scm_tc7_cxr:
-#ifdef SCM_FLOATS
if (SCM_SUBRF (proc))
{
if (SCM_INUMP (t.arg1))
}
#endif
floerr:
- scm_wta (t.arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc)));
+ SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), t.arg1,
+ SCM_ARG1, SCM_CHARS (SCM_SNAME (proc)));
}
-#endif
- proc = (SCM) SCM_SNAME (proc);
+ proc = SCM_SNAME (proc);
{
char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1;
while ('c' != *--chrs)
{
- SCM_ASSERT (SCM_NIMP (t.arg1) && SCM_CONSP (t.arg1),
+ SCM_ASSERT (SCM_CONSP (t.arg1),
t.arg1, SCM_ARG1, SCM_CHARS (proc));
t.arg1 = ('a' == *chrs) ? SCM_CAR (t.arg1) : SCM_CDR (t.arg1);
}
#endif
goto evap2;
#endif
+ case scm_tc7_pws:
+ proc = SCM_PROCEDURE (proc);
+#ifdef DEVAL
+ debug.info->a.proc = proc;
+#endif
+ goto evap1;
case scm_tcs_closures:
- clos1:
+ /* clos1: */
x = SCM_CODE (proc);
#ifdef DEVAL
env = EXTEND_ENV (SCM_CAR (x), debug.info->a.args, SCM_ENV (proc));
case scm_tc7_contin:
scm_call_continuation (proc, t.arg1);
case scm_tcs_cons_gloc:
- if (!SCM_I_OPERATORP (proc))
+ if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC)
+ {
+ x = SCM_ENTITY_PROCEDURE (proc);
+#ifdef DEVAL
+ arg2 = debug.info->a.args;
+#else
+ arg2 = scm_cons (t.arg1, SCM_EOL);
+#endif
+ goto type_dispatch;
+ }
+ else if (!SCM_I_OPERATORP (proc))
goto badfun;
else
{
- x = (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_1 (proc)
- : SCM_OPERATOR_PROC_1 (proc));
- if (SCM_NIMP (x))
- {
- if (SCM_TYP7 (x) == scm_tc7_subr_2)
- RETURN (SCM_SUBRF (x) (proc, t.arg1))
- else if (SCM_CLOSUREP (x))
- {
- arg2 = t.arg1;
- t.arg1 = proc;
- proc = x;
+ arg2 = t.arg1;
+ t.arg1 = proc;
+ proc = (SCM_I_ENTITYP (proc)
+ ? SCM_ENTITY_PROCEDURE (proc)
+ : SCM_OPERATOR_PROCEDURE (proc));
#ifdef DEVAL
- debug.info->a.args = scm_cons (t.arg1,
- debug.info->a.args);
- debug.info->a.proc = proc;
+ debug.info->a.args = scm_cons (t.arg1, debug.info->a.args);
+ debug.info->a.proc = proc;
#endif
- goto clos2;
- }
- }
- /* Fall through. */
+ if (SCM_NIMP (proc))
+ goto evap2;
+ else
+ goto badfun;
}
case scm_tc7_subr_2:
case scm_tc7_subr_0:
else
arg2 = EVALCELLCAR (x, env);
}
- else if (SCM_TYP3 (x) == 1)
+ else if (SCM_TYP3 (x) == scm_tc3_cons_gloc)
{
- if ((arg2 = SCM_GLOC_VAL (SCM_CAR (x))) == 0)
+ scm_bits_t vcell = SCM_STRUCT_VTABLE_DATA (x) [scm_vtable_index_vcell];
+ if (vcell == 0)
arg2 = SCM_CAR (x); /* struct planted in code */
+ else
+ arg2 = SCM_PACK (vcell);
}
else
goto wrongnumargs;
cclon:
case scm_tc7_cclo:
#ifdef DEVAL
- RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc,
- scm_cons (debug.info->a.args, SCM_EOL)));
+ RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc),
+ scm_cons (proc, debug.info->a.args),
+ SCM_EOL));
#else
- RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc), proc,
- scm_cons2 (t.arg1, arg2,
- scm_cons (scm_eval_args (x, env, proc),
- SCM_EOL))));
+ RETURN (SCM_APPLY (SCM_CCLO_SUBR (proc),
+ scm_cons2 (proc, t.arg1,
+ scm_cons (arg2,
+ scm_eval_args (x,
+ env,
+ proc))),
+ SCM_EOL));
#endif
/* case scm_tc7_cclo:
x = scm_cons(arg2, scm_eval_args(x, env));
proc = SCM_CCLO_SUBR(proc);
goto evap3; */
#endif
+ case scm_tc7_pws:
+ proc = SCM_PROCEDURE (proc);
+#ifdef DEVAL
+ debug.info->a.proc = proc;
+#endif
+ goto evap2;
case scm_tcs_cons_gloc:
- if (!SCM_I_OPERATORP (proc))
+ if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC)
+ {
+ x = SCM_ENTITY_PROCEDURE (proc);
+#ifdef DEVAL
+ arg2 = debug.info->a.args;
+#else
+ arg2 = scm_cons2 (t.arg1, arg2, SCM_EOL);
+#endif
+ goto type_dispatch;
+ }
+ else if (!SCM_I_OPERATORP (proc))
goto badfun;
else
{
- x = (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_2 (proc)
- : SCM_OPERATOR_PROC_2 (proc));
- if (SCM_NIMP (x))
- {
- if (SCM_TYP7 (x) == scm_tc7_subr_3)
- RETURN (SCM_SUBRF (x) (proc, t.arg1, arg2))
- else if (SCM_CLOSUREP (x))
- {
+ operatorn:
#ifdef DEVAL
- SCM_SET_ARGSREADY (debug);
- debug.info->a.args = scm_cons (proc,
- debug.info->a.args);
- debug.info->a.proc = x;
-#endif
- env = EXTEND_ENV (SCM_CAR (SCM_CODE (x)),
- scm_cons2 (proc, t.arg1,
- scm_cons (arg2, SCM_EOL)),
- SCM_ENV (x));
- x = SCM_CODE (x);
- goto cdrxbegin;
- }
- }
- /* Fall through. */
+ RETURN (SCM_APPLY (SCM_I_ENTITYP (proc)
+ ? SCM_ENTITY_PROCEDURE (proc)
+ : SCM_OPERATOR_PROCEDURE (proc),
+ scm_cons (proc, debug.info->a.args),
+ SCM_EOL));
+#else
+ RETURN (SCM_APPLY (SCM_I_ENTITYP (proc)
+ ? SCM_ENTITY_PROCEDURE (proc)
+ : SCM_OPERATOR_PROCEDURE (proc),
+ scm_cons2 (proc, t.arg1,
+ scm_cons (arg2,
+ scm_eval_args (x,
+ env,
+ proc))),
+ SCM_EOL));
+#endif
}
case scm_tc7_subr_0:
case scm_tc7_cxr:
default:
goto badfun;
case scm_tcs_closures:
- clos2:
+ /* clos2: */
#ifdef DEVAL
env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)),
debug.info->a.args,
SCM_CDRLOC (SCM_CDR (debug.info->a.args))));
#endif
ENTER_APPLY;
+ evap3:
switch (SCM_TYP7 (proc))
{ /* have 3 or more arguments */
#ifdef DEVAL
case scm_tc7_cclo:
goto cclon;
#endif
+ case scm_tc7_pws:
+ proc = SCM_PROCEDURE (proc);
+ debug.info->a.proc = proc;
+ goto evap3;
case scm_tcs_closures:
SCM_SET_ARGSREADY (debug);
env = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)),
case scm_tc7_cclo:
goto cclon;
#endif
+ case scm_tc7_pws:
+ proc = SCM_PROCEDURE (proc);
+ goto evap3;
case scm_tcs_closures:
#ifdef DEVAL
SCM_SET_ARGSREADY (debug);
goto cdrxbegin;
#endif /* DEVAL */
case scm_tcs_cons_gloc:
- if (!SCM_I_OPERATORP (proc))
- goto badfun;
- else
+ if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC)
{
- SCM p = (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_3 (proc)
- : SCM_OPERATOR_PROC_3 (proc));
- if (SCM_NIMP (p))
- {
- if (SCM_TYP7 (p) == scm_tc7_lsubr_2)
#ifdef DEVAL
- RETURN (SCM_SUBRF (p) (proc, t.arg1,
- scm_cons (arg2, SCM_CDDR (debug.info->a.args))))
+ arg2 = debug.info->a.args;
#else
- RETURN (SCM_SUBRF (p) (proc, t.arg1,
- scm_cons (arg2,
- scm_eval_args (x, env, proc))))
+ arg2 = scm_cons2 (t.arg1, arg2, scm_eval_args (x, env, proc));
#endif
- else if (SCM_CLOSUREP (p))
- {
-#ifdef DEVAL
- SCM_SET_ARGSREADY (debug);
- debug.info->a.args = scm_cons (proc, debug.info->a.args);
- debug.info->a.proc = p;
- env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)),
- scm_cons2 (proc, t.arg1,
- scm_cons (arg2,
- SCM_CDDDR (debug.info->a.args))),
- SCM_ENV (p));
-#else
- env = EXTEND_ENV (SCM_CAR (SCM_CODE (p)),
- scm_cons2 (proc, t.arg1,
- scm_cons (arg2,
- scm_eval_args (x, env, proc))),
- SCM_ENV (p));
-#endif
- x = SCM_CODE (p);
- goto cdrxbegin;
- }
- }
- /* Fall through. */
+ x = SCM_ENTITY_PROCEDURE (proc);
+ goto type_dispatch;
}
+ else if (!SCM_I_OPERATORP (proc))
+ goto badfun;
+ else
+ goto operatorn;
case scm_tc7_subr_2:
case scm_tc7_subr_1o:
case scm_tc7_subr_2o:
goto ret;
}
}
- scm_ithrow (scm_i_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0);
+ scm_ithrow (scm_sym_exit_frame, scm_cons2 (t.arg1, proc, SCM_EOL), 0);
}
ret:
scm_last_debug_frame = debug.prev;
you if you do (scm_apply scm_apply '( ... ))" If you know what
they're referring to, send me a patch to this comment. */
-SCM_PROC(s_nconc2last, "apply:nconc2last", 1, 0, 0, scm_nconc2last);
-
-SCM
-scm_nconc2last (lst)
- SCM lst;
+SCM_DEFINE (scm_nconc2last, "apply:nconc2last", 1, 0, 0,
+ (SCM lst),
+ "")
+#define FUNC_NAME s_scm_nconc2last
{
SCM *lloc;
- SCM_ASSERT (scm_ilength (lst) > 0, lst, SCM_ARG1, s_nconc2last);
+ SCM_VALIDATE_NONEMPTYLIST (1,lst);
lloc = &lst;
while (SCM_NNULLP (SCM_CDR (*lloc)))
lloc = SCM_CDRLOC (*lloc);
- SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, s_nconc2last);
+ SCM_ASSERT (scm_ilength (SCM_CAR (*lloc)) >= 0, lst, SCM_ARG1, FUNC_NAME);
*lloc = SCM_CAR (*lloc);
return lst;
}
+#undef FUNC_NAME
#endif /* !DEVAL */
#if 0
SCM
-scm_apply (proc, arg1, args)
- SCM proc;
- SCM arg1;
- SCM args;
+scm_apply (SCM proc, SCM arg1, SCM args)
{}
#endif
#if 0
SCM
-scm_dapply (proc, arg1, args)
- SCM proc;
- SCM arg1;
- SCM args;
-{}
+scm_dapply (SCM proc, SCM arg1, SCM args)
+{ /* empty */ }
#endif
onto the front of your argument list, and pass that as ARGS. */
SCM
-SCM_APPLY (proc, arg1, args)
- SCM proc;
- SCM arg1;
- SCM args;
+SCM_APPLY (SCM proc, SCM arg1, SCM args)
{
#ifdef DEBUG_EXTENSIONS
#ifdef DEVAL
}
else
{
- /* SCM_ASRTGO(SCM_NIMP(args) && SCM_CONSP(args), wrongnumargs); */
+ /* SCM_ASRTGO(SCM_CONSP(args), wrongnumargs); */
args = scm_nconc2last (args);
#ifdef DEVAL
debug.vect[0].a.args = scm_cons (arg1, args);
if (setjmp (SCM_JMPBUF (tmp)))
goto entap;
}
- scm_ithrow (scm_i_enter_frame, scm_cons (tmp, SCM_EOL), 0);
+ scm_ithrow (scm_sym_enter_frame, scm_cons (tmp, SCM_EOL), 0);
}
entap:
ENTER_APPLY;
RETURN (SCM_SUBRF (proc) (arg1))
case scm_tc7_cxr:
SCM_ASRTGO (SCM_NULLP (args), wrongnumargs);
-#ifdef SCM_FLOATS
if (SCM_SUBRF (proc))
{
if (SCM_INUMP (arg1))
RETURN (scm_makdbl (SCM_DSUBRF (proc) (SCM_REALPART (arg1)), 0.0));
}
#ifdef SCM_BIGDIG
- if SCM_BIGP
- (arg1)
+ if (SCM_BIGP (arg1))
RETURN (scm_makdbl (SCM_DSUBRF (proc) (scm_big2dbl (arg1)), 0.0))
#endif
floerr:
- scm_wta (arg1, (char *) SCM_ARG1, SCM_CHARS (SCM_SNAME (proc)));
+ SCM_WTA_DISPATCH_1 (*SCM_SUBR_GENERIC (proc), arg1,
+ SCM_ARG1, SCM_CHARS (SCM_SNAME (proc)));
}
-#endif
- proc = (SCM) SCM_SNAME (proc);
+ proc = SCM_SNAME (proc);
{
char *chrs = SCM_CHARS (proc) + SCM_LENGTH (proc) - 1;
while ('c' != *--chrs)
{
- SCM_ASSERT (SCM_NIMP (arg1) && SCM_CONSP (arg1),
+ SCM_ASSERT (SCM_CONSP (arg1),
arg1, SCM_ARG1, SCM_CHARS (proc));
arg1 = ('a' == *chrs) ? SCM_CAR (arg1) : SCM_CDR (arg1);
}
RETURN (SCM_SUBRF (proc) (SCM_UNBNDP (arg1) ? SCM_EOL : scm_cons (arg1, args)))
#endif
case scm_tc7_lsubr_2:
- SCM_ASRTGO (SCM_NIMP (args) && SCM_CONSP (args), wrongnumargs);
+ SCM_ASRTGO (SCM_CONSP (args), wrongnumargs);
RETURN (SCM_SUBRF (proc) (arg1, SCM_CAR (args), SCM_CDR (args)))
case scm_tc7_asubr:
if (SCM_NULLP (args))
else
{
SCM tl = args = scm_cons (SCM_CAR (arg1), SCM_UNSPECIFIED);
- while (SCM_NIMP (arg1 = SCM_CDR (arg1))
- && SCM_CONSP (arg1))
+ while (arg1 = SCM_CDR (arg1), SCM_CONSP (arg1))
{
SCM_SETCDR (tl, scm_cons (SCM_CAR (arg1),
SCM_UNSPECIFIED));
}
args = EXTEND_ENV (SCM_CAR (SCM_CODE (proc)), args, SCM_ENV (proc));
- proc = SCM_CODE (proc);
- while (SCM_NNULLP (proc = SCM_CDR (proc)))
- arg1 = EVALCAR (proc, args);
- RETURN (arg1);
+ proc = SCM_CDR (SCM_CODE (proc));
+ again:
+ arg1 = proc;
+ while (SCM_NNULLP (arg1 = SCM_CDR (arg1)))
+ {
+ if (SCM_IMP (SCM_CAR (proc)))
+ {
+ if (SCM_ISYMP (SCM_CAR (proc)))
+ {
+ proc = scm_m_expand_body (proc, args);
+ goto again;
+ }
+ }
+ else
+ SCM_CEVAL (SCM_CAR (proc), args);
+ proc = arg1;
+ }
+ RETURN (EVALCAR (proc, args));
case scm_tc7_contin:
SCM_ASRTGO (SCM_NULLP (args), wrongnumargs);
scm_call_continuation (proc, arg1);
#endif
goto tail;
#endif
+ case scm_tc7_pws:
+ proc = SCM_PROCEDURE (proc);
+#ifdef DEVAL
+ debug.vect[0].a.proc = proc;
+#endif
+ goto tail;
case scm_tcs_cons_gloc:
- if (!SCM_I_OPERATORP (proc))
+ if (SCM_OBJ_CLASS_FLAGS (proc) & SCM_CLASSF_PURE_GENERIC)
+ {
+#ifdef DEVAL
+ args = (SCM_UNBNDP(arg1) ? SCM_EOL : debug.vect[0].a.args);
+#else
+ args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args));
+#endif
+ RETURN (scm_apply_generic (proc, args));
+ }
+ else if (!SCM_I_OPERATORP (proc))
goto badproc;
else
{
args = (SCM_UNBNDP(arg1) ? SCM_EOL : scm_cons (arg1, args));
#endif
arg1 = proc;
- proc = (SCM_NULLP (args)
- ? (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_0 (proc)
- : SCM_OPERATOR_PROC_0 (proc))
- : SCM_NULLP (SCM_CDR (args))
- ? (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_1 (proc)
- : SCM_OPERATOR_PROC_1 (proc))
- : SCM_NULLP (SCM_CDDR (args))
- ? (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_2 (proc)
- : SCM_OPERATOR_PROC_2 (proc))
- : (SCM_I_ENTITYP (proc)
- ? SCM_ENTITY_PROC_3 (proc)
- : SCM_OPERATOR_PROC_3 (proc)));
+ proc = (SCM_I_ENTITYP (proc)
+ ? SCM_ENTITY_PROCEDURE (proc)
+ : SCM_OPERATOR_PROCEDURE (proc));
#ifdef DEVAL
debug.vect[0].a.proc = proc;
debug.vect[0].a.args = scm_cons (arg1, args);
#endif
- goto tail;
+ if (SCM_NIMP (proc))
+ goto tail;
+ else
+ goto badproc;
}
wrongnumargs:
scm_wrong_num_args (proc);
goto ret;
}
}
- scm_ithrow (scm_i_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0);
+ scm_ithrow (scm_sym_exit_frame, scm_cons2 (arg1, proc, SCM_EOL), 0);
}
ret:
scm_last_debug_frame = debug.prev;
#ifndef DEVAL
-SCM_PROC (s_map, "map", 2, 0, 1, scm_map);
+/* Typechecking for multi-argument MAP and FOR-EACH.
+
+ Verify that each element of the vector ARGV, except for the first,
+ is a proper list whose length is LEN. Attribute errors to WHO,
+ and claim that the i'th element of ARGV is WHO's i+2'th argument. */
+static inline void
+check_map_args (SCM argv,
+ long len,
+ SCM gf,
+ SCM proc,
+ SCM args,
+ const char *who)
+{
+ SCM *ve = SCM_VELTS (argv);
+ int i;
+
+ for (i = SCM_LENGTH (argv) - 1; i >= 1; i--)
+ {
+ int elt_len = scm_ilength (ve[i]);
+
+ if (elt_len < 0)
+ {
+ if (gf)
+ scm_apply_generic (gf, scm_cons (proc, args));
+ else
+ scm_wrong_type_arg (who, i + 2, ve[i]);
+ }
+
+ if (elt_len != len)
+ scm_out_of_range (who, ve[i]);
+ }
+
+ scm_remember (&argv);
+}
+
+
+SCM_GPROC (s_map, "map", 2, 0, 1, scm_map, g_map);
/* Note: Currently, scm_map applies PROC to the argument list(s)
sequentially, starting with the first element(s). This is used in
*/
SCM
-scm_map (proc, arg1, args)
- SCM proc;
- SCM arg1;
- SCM args;
+scm_map (SCM proc, SCM arg1, SCM args)
{
- long i;
+ long i, len;
SCM res = SCM_EOL;
SCM *pres = &res;
SCM *ve = &args; /* Keep args from being optimized away. */
if (SCM_NULLP (arg1))
return res;
- SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_map);
+ len = scm_ilength (arg1);
+ SCM_GASSERTn (len >= 0,
+ g_map, scm_cons2 (proc, arg1, args), SCM_ARG2, s_map);
if (SCM_NULLP (args))
{
while (SCM_NIMP (arg1))
{
- SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_map);
- *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull), SCM_EOL);
+ SCM_GASSERT2 (SCM_CONSP (arg1), g_map, proc, arg1, SCM_ARG2, s_map);
+ *pres = scm_cons (scm_apply (proc, SCM_CAR (arg1), scm_listofnull),
+ SCM_EOL);
pres = SCM_CDRLOC (*pres);
arg1 = SCM_CDR (arg1);
}
return res;
}
- args = scm_vector (scm_cons (arg1, args));
+ args = scm_vector (arg1 = scm_cons (arg1, args));
ve = SCM_VELTS (args);
#ifndef SCM_RECKLESS
- for (i = SCM_LENGTH (args) - 1; i >= 0; i--)
- SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_map);
+ check_map_args (args, len, g_map, proc, arg1, s_map);
#endif
while (1)
{
arg1 = SCM_EOL;
for (i = SCM_LENGTH (args) - 1; i >= 0; i--)
{
- if SCM_IMP
- (ve[i]) return res;
+ if (SCM_IMP (ve[i]))
+ return res;
arg1 = scm_cons (SCM_CAR (ve[i]), arg1);
ve[i] = SCM_CDR (ve[i]);
}
}
-SCM_PROC(s_for_each, "for-each", 2, 0, 1, scm_for_each);
+SCM_GPROC (s_for_each, "for-each", 2, 0, 1, scm_for_each, g_for_each);
SCM
-scm_for_each (proc, arg1, args)
- SCM proc;
- SCM arg1;
- SCM args;
+scm_for_each (SCM proc, SCM arg1, SCM args)
{
SCM *ve = &args; /* Keep args from being optimized away. */
- long i;
+ long i, len;
if SCM_NULLP (arg1)
return SCM_UNSPECIFIED;
- SCM_ASSERT (SCM_NIMP (arg1), arg1, SCM_ARG2, s_for_each);
+ len = scm_ilength (arg1);
+ SCM_GASSERTn (len >= 0, g_for_each, scm_cons2 (proc, arg1, args),
+ SCM_ARG2, s_for_each);
if SCM_NULLP (args)
{
while SCM_NIMP (arg1)
{
- SCM_ASSERT (SCM_CONSP (arg1), arg1, SCM_ARG2, s_for_each);
+ SCM_GASSERT2 (SCM_CONSP (arg1),
+ g_for_each, proc, arg1, SCM_ARG2, s_for_each);
scm_apply (proc, SCM_CAR (arg1), scm_listofnull);
arg1 = SCM_CDR (arg1);
}
return SCM_UNSPECIFIED;
}
- args = scm_vector (scm_cons (arg1, args));
+ args = scm_vector (arg1 = scm_cons (arg1, args));
ve = SCM_VELTS (args);
#ifndef SCM_RECKLESS
- for (i = SCM_LENGTH (args) - 1; i >= 0; i--)
- SCM_ASSERT (SCM_NIMP (ve[i]) && SCM_CONSP (ve[i]), args, SCM_ARG2, s_for_each);
+ check_map_args (args, len, g_for_each, proc, arg1, s_for_each);
#endif
while (1)
{
SCM
-scm_closure (code, env)
- SCM code;
- SCM env;
+scm_closure (SCM code, SCM env)
{
register SCM z;
SCM_NEWCELL (z);
long scm_tc16_promise;
SCM
-scm_makprom (code)
- SCM code;
+scm_makprom (SCM code)
{
- register SCM z;
- SCM_NEWCELL (z);
- SCM_ENTER_A_SECTION;
- SCM_SETCDR (z, code);
- SCM_SETCAR (z, scm_tc16_promise);
- SCM_EXIT_A_SECTION;
- return z;
+ SCM_RETURN_NEWSMOB (scm_tc16_promise, SCM_UNPACK (code));
}
-static int prinprom SCM_P ((SCM exp, SCM port, scm_print_state *pstate));
-
static int
-prinprom (exp, port, pstate)
- SCM exp;
- SCM port;
- scm_print_state *pstate;
+prinprom (SCM exp,SCM port,scm_print_state *pstate)
{
int writingp = SCM_WRITINGP (pstate);
scm_puts ("#<promise ", port);
}
-SCM_PROC(s_force, "force", 1, 0, 0, scm_force);
-
-SCM
-scm_force (x)
- SCM x;
+SCM_DEFINE (scm_force, "force", 1, 0, 0,
+ (SCM x),
+ "")
+#define FUNC_NAME s_scm_force
{
- SCM_ASSERT (SCM_NIMP(x) && SCM_TYP16 (x) == scm_tc16_promise,
- x, SCM_ARG1, s_force);
- if (!((1L << 16) & SCM_CAR (x)))
+ SCM_VALIDATE_SMOB (1,x,promise);
+ if (!((1L << 16) & SCM_UNPACK_CAR (x)))
{
SCM ans = scm_apply (SCM_CDR (x), SCM_EOL, SCM_EOL);
- if (!((1L << 16) & SCM_CAR (x)))
+ if (!((1L << 16) & SCM_UNPACK_CAR (x)))
{
SCM_DEFER_INTS;
SCM_SETCDR (x, ans);
}
return SCM_CDR (x);
}
+#undef FUNC_NAME
-SCM_PROC (s_promise_p, "promise?", 1, 0, 0, scm_promise_p);
-
-SCM
-scm_promise_p (x)
- SCM x;
+SCM_DEFINE (scm_promise_p, "promise?", 1, 0, 0,
+ (SCM x),
+ "Return true if @var{obj} is a promise, i.e. a delayed computation\n"
+ "(@pxref{Delayed evaluation,,,r4rs.info,The Revised^4 Report on Scheme}).")
+#define FUNC_NAME s_scm_promise_p
{
- return ((SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise))
- ? SCM_BOOL_T
- : SCM_BOOL_F);
+ return SCM_BOOL(SCM_NIMP (x) && (SCM_TYP16 (x) == scm_tc16_promise));
}
+#undef FUNC_NAME
-SCM_PROC(s_copy_tree, "copy-tree", 1, 0, 0, scm_copy_tree);
-
-SCM
-scm_copy_tree (obj)
- SCM obj;
+SCM_DEFINE (scm_cons_source, "cons-source", 3, 0, 0,
+ (SCM xorig, SCM x, SCM y),
+ "")
+#define FUNC_NAME s_scm_cons_source
+{
+ SCM p, z;
+ SCM_NEWCELL (z);
+ SCM_SETCAR (z, x);
+ SCM_SETCDR (z, y);
+ /* Copy source properties possibly associated with xorig. */
+ p = scm_whash_lookup (scm_source_whash, xorig);
+ if (SCM_NIMP (p))
+ scm_whash_insert (scm_source_whash, z, p);
+ return z;
+}
+#undef FUNC_NAME
+
+SCM_DEFINE (scm_copy_tree, "copy-tree", 1, 0, 0,
+ (SCM obj),
+ "Recursively copy the data tree that is bound to @var{obj}, and return a\n"
+ "pointer to the new data structure. @code{copy-tree} recurses down the\n"
+ "contents of both pairs and vectors (since both cons cells and vector\n"
+ "cells may point to arbitrary objects), and stops recursing when it hits\n"
+ "any other object.")
+#define FUNC_NAME s_scm_copy_tree
{
SCM ans, tl;
- if SCM_IMP
- (obj) return obj;
+ if (SCM_IMP (obj))
+ return obj;
if (SCM_VECTORP (obj))
{
scm_sizet i = SCM_LENGTH (obj);
SCM_VELTS (ans)[i] = scm_copy_tree (SCM_VELTS (obj)[i]);
return ans;
}
- if SCM_NCONSP (obj)
+ if (SCM_NCONSP (obj))
return obj;
/* return scm_cons(scm_copy_tree(SCM_CAR(obj)), scm_copy_tree(SCM_CDR(obj))); */
- ans = tl = scm_cons (scm_copy_tree (SCM_CAR (obj)), SCM_UNSPECIFIED);
- {
- /* Copy source properties possibly associated with head pair. */
- SCM p = scm_whash_lookup (scm_source_whash, obj);
- if (SCM_NIMP (p))
- scm_whash_insert (scm_source_whash, ans, p);
- }
- while (SCM_NIMP (obj = SCM_CDR (obj)) && SCM_CONSP (obj))
+ ans = tl = scm_cons_source (obj,
+ scm_copy_tree (SCM_CAR (obj)),
+ SCM_UNSPECIFIED);
+ while (obj = SCM_CDR (obj), SCM_CONSP (obj))
{
SCM_SETCDR (tl, scm_cons (scm_copy_tree (SCM_CAR (obj)),
SCM_UNSPECIFIED));
SCM_SETCDR (tl, obj);
return ans;
}
+#undef FUNC_NAME
SCM
-scm_eval_3 (obj, copyp, env)
- SCM obj;
- int copyp;
- SCM env;
+scm_eval_3 (SCM obj, int copyp, SCM env)
{
if (SCM_NIMP (SCM_CDR (scm_system_transformer)))
obj = scm_apply (SCM_CDR (scm_system_transformer), obj, scm_listofnull);
return SCM_XEVAL (obj, env);
}
-
-SCM
-scm_top_level_env (thunk)
- SCM thunk;
-{
- if (SCM_IMP(thunk))
- return SCM_EOL;
- else
- return scm_cons(thunk, (SCM)SCM_EOL);
-}
-
-SCM_PROC(s_eval2, "eval2", 2, 0, 0, scm_eval2);
-
-SCM
-scm_eval2 (obj, env_thunk)
- SCM obj;
- SCM env_thunk;
+SCM_DEFINE (scm_eval2, "eval2", 2, 0, 0,
+ (SCM obj, SCM env_thunk),
+ "Evaluate @var{exp}, a Scheme expression, in the environment designated\n"
+ "by @var{lookup}, a symbol-lookup function. @code{(eval exp)} is\n"
+ "equivalent to @code{(eval2 exp *top-level-lookup-closure*)}.")
+#define FUNC_NAME s_scm_eval2
{
- return scm_eval_3 (obj, 1, scm_top_level_env(env_thunk));
+ return scm_eval_3 (obj, 1, scm_top_level_env (env_thunk));
}
+#undef FUNC_NAME
-SCM_PROC(s_eval, "eval", 1, 0, 0, scm_eval);
-
-SCM
-scm_eval (obj)
- SCM obj;
+SCM_DEFINE (scm_eval, "eval", 1, 0, 0,
+ (SCM obj),
+ "Evaluate @var{exp}, a list representing a Scheme expression, in the\n"
+ "top-level environment.")
+#define FUNC_NAME s_scm_eval
{
- return
- scm_eval_3(obj, 1, scm_top_level_env(SCM_CDR(scm_top_level_lookup_closure_var)));
+ return scm_eval_3 (obj,
+ 1,
+ scm_top_level_env
+ (SCM_CDR (scm_top_level_lookup_closure_var)));
}
+#undef FUNC_NAME
-/* SCM_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x); */
+/*
+SCM_REGISTER_PROC(s_eval_x, "eval!", 1, 0, 0, scm_eval_x);
+*/
SCM
-scm_eval_x (obj)
- SCM obj;
+scm_eval_x (SCM obj)
{
- return
- scm_eval_3(obj,
- 0,
- scm_top_level_env (SCM_CDR (scm_top_level_lookup_closure_var)));
+ return scm_eval_3 (obj,
+ 0,
+ scm_top_level_env
+ (SCM_CDR (scm_top_level_lookup_closure_var)));
}
-static scm_smobfuns promsmob = {scm_markcdr, scm_free0, prinprom};
-
/* At this point, scm_deval and scm_dapply are generated.
*/
scm_eval_opts,
SCM_N_EVAL_OPTIONS);
- scm_tc16_promise = scm_newsmob (&promsmob);
+ scm_tc16_promise = scm_make_smob_type ("promise", 0);
+ scm_set_smob_mark (scm_tc16_promise, scm_markcdr);
+ scm_set_smob_print (scm_tc16_promise, prinprom);
- scm_i_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply);
+ scm_f_apply = scm_make_subr ("apply", scm_tc7_lsubr_2, scm_apply);
scm_system_transformer = scm_sysintern ("scm:eval-transformer", SCM_UNDEFINED);
- scm_i_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED));
- scm_i_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED));
- scm_i_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED));
- scm_i_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED));
- scm_i_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED));
-
+ scm_sym_dot = SCM_CAR (scm_sysintern (".", SCM_UNDEFINED));
+ scm_sym_arrow = SCM_CAR (scm_sysintern ("=>", SCM_UNDEFINED));
+ scm_sym_else = SCM_CAR (scm_sysintern ("else", SCM_UNDEFINED));
+ scm_sym_unquote = SCM_CAR (scm_sysintern ("unquote", SCM_UNDEFINED));
+ scm_sym_uq_splicing = SCM_CAR (scm_sysintern ("unquote-splicing", SCM_UNDEFINED));
+
+ scm_lisp_nil = scm_sysintern ("nil", SCM_UNDEFINED);
+ SCM_SETCDR (scm_lisp_nil, SCM_CAR (scm_lisp_nil));
+ scm_lisp_nil = SCM_CAR (scm_lisp_nil);
+ scm_lisp_t = scm_sysintern ("t", SCM_UNDEFINED);
+ SCM_SETCDR (scm_lisp_t, SCM_CAR (scm_lisp_t));
+ scm_lisp_t = SCM_CAR (scm_lisp_t);
+
/* acros */
/* end of acros */
scm_can_use_top_level_lookup_closure_var = 1;
#ifdef DEBUG_EXTENSIONS
- scm_i_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED));
- scm_i_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED));
- scm_i_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED));
- scm_i_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED));
+ scm_sym_enter_frame = SCM_CAR (scm_sysintern ("enter-frame", SCM_UNDEFINED));
+ scm_sym_apply_frame = SCM_CAR (scm_sysintern ("apply-frame", SCM_UNDEFINED));
+ scm_sym_exit_frame = SCM_CAR (scm_sysintern ("exit-frame", SCM_UNDEFINED));
+ scm_sym_trace = SCM_CAR (scm_sysintern ("trace", SCM_UNDEFINED));
#endif
-#include "eval.x"
+#include "libguile/eval.x"
scm_add_feature ("delay");
}
#endif /* !DEVAL */
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff