/* classes: h_files */ #ifndef SCM_EVAL_H #define SCM_EVAL_H /* Copyright (C) 1995,1996,1998,1999,2000,2001, 2002 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 "libguile/struct.h" /* {Options} */ extern scm_t_option scm_eval_opts[]; #define SCM_EVAL_STACK scm_eval_opts[0].val #define SCM_N_EVAL_OPTIONS 1 extern long scm_eval_stack; extern scm_t_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_ENTER_FRAME_HDLR (SCM)(scm_evaluator_trap_table[4].val) #define SCM_APPLY_FRAME_HDLR (SCM)(scm_evaluator_trap_table[5].val) #define SCM_EXIT_FRAME_HDLR (SCM)(scm_evaluator_trap_table[6].val) #define SCM_N_EVALUATOR_TRAPS 7 /* {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) ((long)((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 \ : 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_call_0 (SCM proc); extern SCM scm_call_1 (SCM proc, SCM arg1); extern SCM scm_call_2 (SCM proc, SCM arg1, SCM arg2); extern SCM scm_call_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3); extern SCM scm_call_4 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM arg4); extern SCM scm_apply_0 (SCM proc, SCM args); extern SCM scm_apply_1 (SCM proc, SCM arg1, SCM args); extern SCM scm_apply_2 (SCM proc, SCM arg1, SCM arg2, SCM args); extern SCM scm_apply_3 (SCM proc, SCM arg1, SCM arg2, SCM arg3, SCM args); 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: */