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1234bb1850
Update to newest recommended license notices from the FSF. Everything stays LGPLv3+ except guile-readline which is GPLv3+.
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/* Copyright 1998-2003,2006,2008-2013,2015,2018
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Free Software Foundation, Inc.
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This file is part of Guile.
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Guile is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Guile is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with Guile. If not, see
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<https://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "gsubr.h"
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#include "eval.h"
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#include "list.h"
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#include "fluids.h"
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#include "modules.h"
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#include "pairs.h"
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#include "symbols.h"
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#include "variable.h"
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#include "evalext.h"
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SCM_DEFINE (scm_defined_p, "defined?", 1, 1, 0,
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(SCM sym, SCM module),
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"Return @code{#t} if @var{sym} is defined in the module "
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"@var{module} or the current module when @var{module} is not"
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"specified.")
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#define FUNC_NAME s_scm_defined_p
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{
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SCM var;
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SCM_VALIDATE_SYMBOL (1, sym);
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if (SCM_UNBNDP (module))
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module = scm_current_module ();
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else
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SCM_VALIDATE_MODULE (2, module);
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var = scm_module_variable (module, sym);
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return (scm_is_false (var) || SCM_UNBNDP (SCM_VARIABLE_REF (var))
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? SCM_BOOL_F
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: SCM_BOOL_T);
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}
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#undef FUNC_NAME
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SCM_DEFINE (scm_self_evaluating_p, "self-evaluating?", 1, 0, 0,
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(SCM obj),
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"Return #t for objects which Guile considers self-evaluating")
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#define FUNC_NAME s_scm_self_evaluating_p
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{
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switch (SCM_ITAG3 (obj))
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{
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case scm_tc3_int_1:
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case scm_tc3_int_2:
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/* inum */
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return SCM_BOOL_T;
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case scm_tc3_imm24:
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/* characters, booleans, other immediates */
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return scm_from_bool (!scm_is_null_and_not_nil (obj));
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case scm_tc3_cons:
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switch (SCM_TYP7 (obj))
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{
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case scm_tc7_vector:
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case scm_tc7_wvect:
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case scm_tc7_pointer:
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case scm_tc7_hashtable:
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case scm_tc7_weak_set:
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case scm_tc7_weak_table:
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case scm_tc7_fluid:
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case scm_tc7_dynamic_state:
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case scm_tc7_frame:
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case scm_tc7_keyword:
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case scm_tc7_syntax:
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case scm_tc7_vm_cont:
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case scm_tc7_number:
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case scm_tc7_string:
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case scm_tc7_smob:
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case scm_tc7_program:
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case scm_tc7_bytevector:
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case scm_tc7_array:
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case scm_tc7_bitvector:
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case scm_tcs_struct:
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return SCM_BOOL_T;
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default:
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return SCM_BOOL_F;
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}
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}
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SCM_MISC_ERROR ("Internal error: Object ~S has unknown type",
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scm_list_1 (obj));
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return SCM_UNSPECIFIED; /* never reached */
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}
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#undef FUNC_NAME
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void
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scm_init_evalext ()
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{
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#include "evalext.x"
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}
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