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/* classes: h_files */
#ifndef SCM_EVAL_H
#define SCM_EVAL_H
/* Copyright (C) 1995,1996,1998,1999,2000,2001 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"
#include "struct.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 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) \
& (SCM_UNPACK (n) >> 8))
#define SCM_IDIST(n) (SCM_UNPACK (n) >> 20)
#define SCM_ICDRP(n) (SCM_ICDR & SCM_UNPACK (n))
/* {Evaluator}
*
* For an explanation of symbols containing "EVAL", see beginning of eval.c.
*/
#define SCM_EVALIM2(x) ((SCM_EQ_P ((x), SCM_EOL)) \
? scm_misc_error (NULL, scm_s_expression, SCM_EOL), 0 \
: (x))
#ifdef MEMOIZE_LOCALS
#define SCM_EVALIM(x, env) (SCM_ILOCP (x) \
? *scm_ilookup ((x), env) \
: SCM_EVALIM2(x))
#else
#define SCM_EVALIM(x, env) SCM_EVALIM2(x)
#endif
#ifdef DEBUG_EXTENSIONS
#define SCM_XEVAL(x, env) (SCM_IMP (x) \
? SCM_EVALIM2(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) \
? SCM_EVALIM2(x) \
: scm_ceval ((x), (env)))
#define SCM_XEVALCAR(x, env) EVALCAR (x, env)
#endif /* DEBUG_EXTENSIONS */
#define SCM_EXTEND_ENV scm_acons
/*fixme* This should probably be removed throught the code. */
#define SCM_TOP_LEVEL_LOOKUP_CLOSURE (scm_current_module_lookup_closure())
#if SCM_DEBUG_DEPRECATED == 0
extern SCM scm_top_level_lookup_closure_var;
extern SCM scm_system_transformer;
#endif
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_at_call_with_values;
extern SCM scm_sym_delay;
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 SCM scm_f_apply;
/* A resolved global variable reference in the CAR position
* of a list is stored (in code only) as a pointer to a variable with a
* tag of 1. This is called a "gloc".
*/
#define SCM_GLOC_VAR(x) (SCM_PACK(SCM_UNPACK(x)-scm_tc3_cons_gloc))
#define SCM_GLOC_VAL(x) (SCM_VARIABLE_REF (SCM_GLOC_VAR (x)))
#define SCM_GLOC_SET_VAL(x, y) (SCM_VARIABLE_SET (SCM_GLOC_VAR (x), y))
#define SCM_GLOC_VAL_LOC(x) (SCM_VARIABLE_LOC (SCM_GLOC_VAR (x)))
extern SCM * scm_ilookup (SCM iloc, SCM env);
extern SCM * scm_lookupcar (SCM vloc, SCM genv, int check);
extern SCM scm_unmemocar (SCM form, SCM env);
extern SCM scm_unmemocopy (SCM form, SCM env);
extern SCM scm_eval_car (SCM pair, SCM env);
extern SCM scm_eval_body (SCM code, SCM env);
extern SCM scm_eval_args (SCM i, SCM env, SCM proc);
extern SCM scm_deval_args (SCM l, SCM env, SCM proc, SCM *lloc);
extern SCM scm_m_quote (SCM xorig, SCM env);
extern SCM scm_m_begin (SCM xorig, SCM env);
extern SCM scm_m_if (SCM xorig, SCM env);
extern SCM scm_m_set_x (SCM xorig, SCM env);
extern SCM scm_m_vref (SCM xorig, SCM env);
extern SCM scm_m_vset (SCM xorig, SCM env);
extern SCM scm_m_and (SCM xorig, SCM env);
extern SCM scm_m_or (SCM xorig, SCM env);
extern SCM scm_m_case (SCM xorig, SCM env);
extern SCM scm_m_cond (SCM xorig, SCM env);
extern SCM scm_m_lambda (SCM xorig, SCM env);
extern SCM scm_m_letstar (SCM xorig, SCM env);
extern SCM scm_m_do (SCM xorig, SCM env);
extern SCM scm_m_quasiquote (SCM xorig, SCM env);
extern SCM scm_m_delay (SCM xorig, SCM env);
extern SCM scm_m_define (SCM x, SCM env);
extern SCM scm_m_letrec (SCM xorig, SCM env);
extern SCM scm_m_let (SCM xorig, SCM env);
extern SCM scm_m_apply (SCM xorig, SCM env);
extern SCM scm_m_cont (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 SCM scm_m_at_call_with_values (SCM xorig, SCM env);
extern int scm_badargsp (SCM formals, SCM args);
extern SCM scm_ceval (SCM x, SCM env);
extern SCM scm_deval (SCM x, SCM env);
extern SCM scm_nconc2last (SCM lst);
extern SCM scm_apply (SCM proc, SCM arg1, SCM args);
extern SCM scm_dapply (SCM proc, SCM arg1, SCM args);
extern SCM scm_m_expand_body (SCM xorig, SCM env);
extern SCM scm_macroexp (SCM x, SCM env);
extern SCM scm_map (SCM proc, SCM arg1, SCM args);
extern SCM scm_for_each (SCM proc, SCM arg1, SCM args);
extern SCM scm_closure (SCM code, SCM env);
extern SCM scm_makprom (SCM code);
extern SCM scm_force (SCM x);
extern SCM scm_promise_p (SCM x);
extern SCM scm_cons_source (SCM xorig, SCM x, SCM y);
extern SCM scm_copy_tree (SCM obj);
#if SCM_DEBUG_DEPRECATED == 0
extern SCM scm_eval_3 (SCM obj, int copyp, SCM env);
extern SCM scm_eval2 (SCM obj, SCM env_thunk);
#endif
extern SCM scm_i_eval_x (SCM exp, SCM env);
extern SCM scm_i_eval (SCM exp, SCM env);
extern SCM scm_primitive_eval (SCM exp);
extern SCM scm_primitive_eval_x (SCM exp);
extern SCM scm_eval (SCM exp, SCM module);
extern SCM scm_eval_x (SCM exp, SCM module);
extern void scm_init_eval (void);
#endif /* SCM_EVAL_H */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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