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guile/libguile/eval.h
Mikael Djurfeldt 9de33deb2e * procs.c, procs.h (scm_subr_entry): New type: Stores data 
associated with subrs.
(SCM_SUBRNUM, SCM_SUBR_ENTRY, SCM_SUBR_GENERIC, SCM_SUBR_PROPS,
SCM_SUBR_DOC): New macros.
(scm_subr_table): New variable.
(scm_mark_subr_table): New function.

* init.c (scm_boot_guile_1): Call scm_init_subr_table.

* gc.c (scm_gc_mark): Don't mark subr names here.
(scm_igc): Call scm_mark_subr_table.

* snarf.h (SCM_GPROC, SCM_GPROC1): New macros.

* procs.c, procs.h (scm_subr_p): New function (used internally).

* gsubr.c, gsubr.h (scm_make_gsubr_with_generic): New function.

* objects.c, objects.h (scm_primitive_generic): New class.

* objects.h (SCM_CMETHOD_CODE, SCM_CMETHOD_ENV): New macros.

* print.c (scm_iprin1): Print primitive-generics.

* __scm.h (SCM_WTA_DISPATCH_1, SCM_GASSERT1,
SCM_WTA_DISPATCH_2, SCM_GASSERT2): New macros.

* eval.c (SCM_CEVAL, SCM_APPLY): Replace scm_wta -->
SCM_WTA_DISPATCH_1 for scm_cxr's (unary floating point
primitives).  NOTE: This means that it is now *required* to use
SCM_GPROC1 when creating float scm_cxr's (float scm_cxr's is an
obscured representation that will be removed in the future anyway,
so backward compatibility is no problem here).

* numbers.c: Converted most numeric primitives (all but bit
comparison operations and bit operations) to dispatch on generic
if args don't match.

* eval.c, eval.h (scm_eval_body): New function.

* objects.c (scm_call_generic_0, scm_call_generic_1,
scm_call_generic_2, scm_call_generic_3, scm_apply_generic): New
functions.

* eval.c (SCM_CEVAL): Apply the cmethod directly after having
called scm_memoize_method instead of doing a second lookup.

* objects.h (scm_memoize_method): Now returns the memoized cmethod.

* procs.c (scm_make_subr_opt): Use scm_sysintern0 instead of
scm_sysintern so that the binding connected with the subr name
isn't cleared when we give set = 0.
1999-08-26 04:24:42 +00:00

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/* classes: h_files */
#ifndef EVALH
#define EVALH
/* Copyright (C) 1995,1996,1998 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
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* 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. */
#include "libguile/__scm.h"
/* {Options}
*/
extern scm_option scm_eval_opts[];
#define SCM_EVAL_STACK scm_eval_opts[0].val
#define SCM_N_EVAL_OPTIONS 1
extern int scm_eval_stack;
extern scm_option scm_evaluator_trap_table[];
extern SCM scm_eval_options_interface SCM_P ((SCM setting));
#define SCM_TRAPS_P scm_evaluator_trap_table[0].val
#define SCM_ENTER_FRAME_P scm_evaluator_trap_table[1].val
#define SCM_APPLY_FRAME_P scm_evaluator_trap_table[2].val
#define SCM_EXIT_FRAME_P scm_evaluator_trap_table[3].val
#define SCM_N_EVALUATOR_TRAPS 4
/* {Ilocs}
*
* Ilocs are relative pointers into local environment structures.
*
*/
#define SCM_ILOCP(n) (SCM_ITAG8(n)==scm_tc8_iloc)
#define SCM_ILOC00 SCM_MAKE_ITAG8(0L, scm_tc8_iloc)
#define SCM_IDINC (0x00100000L)
#define SCM_ICDR (0x00080000L)
#define SCM_IFRINC (0x00000100L)
#define SCM_IDSTMSK (-SCM_IDINC)
#define SCM_IFRAME(n) ((int)((SCM_ICDR-SCM_IFRINC)>>8) & ((int)(n)>>8))
#define SCM_IDIST(n) (((unsigned long)(n))>>20)
#define SCM_ICDRP(n) (SCM_ICDR & (n))
/* {Evaluator}
*
* For an explanation of symbols containing "EVAL", see beginning of eval.c.
*/
#ifdef MEMOIZE_LOCALS
#define SCM_EVALIM(x, env) (SCM_ILOCP(x)?*scm_ilookup((x), env):x)
#else
#define SCM_EVALIM(x, env) x
#endif
#ifdef DEBUG_EXTENSIONS
#define SCM_XEVAL(x, env) (SCM_IMP(x) \
? (x) \
: (*scm_ceval_ptr) ((x), (env)))
#define SCM_XEVALCAR(x, env) (SCM_NCELLP(SCM_CAR(x)) \
? (SCM_IMP(SCM_CAR(x)) \
? SCM_EVALIM(SCM_CAR(x), env) \
: SCM_GLOC_VAL(SCM_CAR(x))) \
: (SCM_SYMBOLP(SCM_CAR(x)) \
? *scm_lookupcar(x, env, 1) \
: (*scm_ceval_ptr) (SCM_CAR(x), env)))
#else
#define SCM_XEVAL(x, env) (SCM_IMP(x)?(x):scm_ceval((x), (env)))
#define SCM_XEVALCAR(x, env) EVALCAR(x, env)
#endif /* DEBUG_EXTENSIONS */
#define SCM_EXTEND_ENV scm_acons
extern const char scm_s_expression[];
extern const char scm_s_test[];
extern const char scm_s_body[];
extern const char scm_s_bindings[];
extern const char scm_s_variable[];
extern const char scm_s_clauses[];
extern const char scm_s_formals[];
extern const char scm_s_set_x[];
extern SCM scm_sym_and;
extern SCM scm_sym_begin;
extern SCM scm_sym_case;
extern SCM scm_sym_cond;
extern SCM scm_sym_define;
extern SCM scm_sym_do;
extern SCM scm_sym_if;
extern SCM scm_sym_lambda;
extern SCM scm_sym_let;
extern SCM scm_sym_letstar;
extern SCM scm_sym_letrec;
extern SCM scm_sym_quote;
extern SCM scm_sym_quasiquote;
extern SCM scm_sym_unquote;
extern SCM scm_sym_uq_splicing;
extern SCM scm_sym_dot;
extern SCM scm_sym_atapply;
extern SCM scm_sym_atcall_cc;
extern SCM scm_sym_arrow;
extern SCM scm_sym_else;
extern SCM scm_sym_apply;
extern SCM scm_sym_set_x;
extern SCM scm_sym_args;
extern long scm_tc16_macro;
/* A resolved global variable reference in the CAR position
* of a list is stored (in code only) as a pointer to a pair with a
* tag of 1. This is called a "gloc".
*/
#define SCM_GLOC_SYM(x) (SCM_CAR((x)-1L))
#define SCM_GLOC_VAL(x) (SCM_CDR((x)-1L))
#define SCM_GLOC_VAL_LOC(x) (SCM_CDRLOC((x)-1L))
extern SCM * scm_ilookup SCM_P ((SCM iloc, SCM env));
extern SCM * scm_lookupcar SCM_P ((SCM vloc, SCM genv, int check));
extern SCM scm_unmemocar SCM_P ((SCM form, SCM env));
extern SCM scm_unmemocopy SCM_P ((SCM form, SCM env));
extern SCM scm_eval_car SCM_P ((SCM pair, SCM env));
extern SCM scm_eval_body (SCM code, SCM env);
extern SCM scm_eval_args SCM_P ((SCM i, SCM env, SCM proc));
extern SCM scm_deval_args SCM_P ((SCM l, SCM env, SCM proc, SCM *lloc));
extern SCM scm_m_quote SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_begin SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_if SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_set_x SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_vref SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_vset SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_and SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_or SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_case SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_cond SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_lambda SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_letstar SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_do SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_quasiquote SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_delay SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_define SCM_P ((SCM x, SCM env));
extern SCM scm_m_letrec SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_let SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_apply SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_cont SCM_P ((SCM xorig, SCM env));
extern SCM scm_m_nil_cond (SCM xorig, SCM env);
extern SCM scm_m_nil_ify (SCM xorig, SCM env);
extern SCM scm_m_t_ify (SCM xorig, SCM env);
extern SCM scm_m_0_cond (SCM xorig, SCM env);
extern SCM scm_m_0_ify (SCM xorig, SCM env);
extern SCM scm_m_1_ify (SCM xorig, SCM env);
extern SCM scm_m_atfop (SCM xorig, SCM env);
extern SCM scm_m_atbind (SCM xorig, SCM env);
extern int scm_badargsp SCM_P ((SCM formals, SCM args));
extern SCM scm_ceval SCM_P ((SCM x, SCM env));
extern SCM scm_deval SCM_P ((SCM x, SCM env));
extern SCM scm_nconc2last SCM_P ((SCM lst));
extern SCM scm_apply SCM_P ((SCM proc, SCM arg1, SCM args));
extern SCM scm_dapply SCM_P ((SCM proc, SCM arg1, SCM args));
extern SCM scm_m_expand_body SCM_P ((SCM xorig, SCM env));
extern SCM scm_macroexp SCM_P ((SCM x, SCM env));
extern SCM scm_map SCM_P ((SCM proc, SCM arg1, SCM args));
extern SCM scm_for_each SCM_P ((SCM proc, SCM arg1, SCM args));
extern SCM scm_closure SCM_P ((SCM code, SCM env));
extern SCM scm_makprom SCM_P ((SCM code));
extern SCM scm_force SCM_P ((SCM x));
extern SCM scm_promise_p SCM_P ((SCM x));
extern SCM scm_cons_source (SCM xorig, SCM x, SCM y);
extern SCM scm_copy_tree SCM_P ((SCM obj));
extern SCM scm_eval_3 SCM_P ((SCM obj, int copyp, SCM env));
extern SCM scm_eval2 SCM_P ((SCM obj, SCM env_thunk));
extern SCM scm_eval SCM_P ((SCM obj));
extern SCM scm_eval_x SCM_P ((SCM obj));
extern void scm_init_eval SCM_P ((void));
#endif /* EVALH */
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