130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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SCM struct_ref_ (SCM x, long i);
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SCM struct_set_x_ (SCM x, long i, SCM e);
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SCM
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make_module_type () ///(internal))
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{
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SCM record_type_name = cstring_to_symbol ("<record-type>");
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SCM record_type = record_type_name; // FIXME
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SCM module_type_name = cstring_to_symbol ("<module>");
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SCM fields = cell_nil;
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fields = cons (cstring_to_symbol ("globals"), fields);
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fields = cons (cstring_to_symbol ("locals"), fields);
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fields = cons (cstring_to_symbol ("name"), fields);
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fields = cons (fields, cell_nil);
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fields = cons (module_type_name, fields);
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return make_struct (record_type, fields, cell_unspecified);
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}
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SCM
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make_initial_module (SCM a) ///((internal))
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{
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SCM module_type_name = cstring_to_symbol ("<module>");
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// SCM module_type = module_type_name; //FIXME
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SCM module_type = make_module_type ();
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a = acons (module_type_name, module_type, a);
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SCM hashq_type = make_hashq_type ();
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SCM hashq_type_name = cstring_to_symbol ("<hashq-table>");
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a = acons (hashq_type_name, hashq_type, a);
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SCM name = cons (cstring_to_symbol ("boot"), cell_nil);
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SCM globals = make_hash_table_ (0);
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SCM locals = cell_nil;
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SCM values = cell_nil;
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values = cons (globals, values);
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values = cons (locals, values);
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values = cons (name, values);
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values = cons (module_type_name, values);
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SCM module = make_struct (module_type, values, cell_module_printer);
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r0 = cell_nil;
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r0 = cons (CADR (a), r0);
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r0 = cons (CAR (a), r0);
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m0 = module;
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while (TYPE (a) == TPAIR)
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{
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if (g_debug > 3)
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{
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eputs ("entry="); display_error_ (CAR (a)); eputs ("\n");
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}
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module_define_x (module, CAAR (a), CDAR (a));
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a = CDR (a);
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}
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return module;
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}
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SCM
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module_printer (SCM module)
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{
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//module = m0;
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fdputs ("#<", g_stdout); display_ (struct_ref_ (module, 2)); fdputc (' ', g_stdout);
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fdputs ("name: ", g_stdout); display_ (struct_ref_ (module, 3)); fdputc (' ', g_stdout);
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fdputs ("locals: ", g_stdout); display_ (struct_ref_ (module, 4)); fdputc (' ', g_stdout);
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SCM table = struct_ref_ (module, 5);
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fdputs ("globals:\n ", g_stdout);
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display_ (table);
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fdputc ('>', g_stdout);
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}
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SCM
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module_variable (SCM module, SCM name)
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{
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//SCM locals = struct_ref_ (module, 3);
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SCM locals = module;
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SCM x = assq (name, locals);
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if (x == cell_f)
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{
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module = m0;
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SCM globals = struct_ref_ (module, 5);
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x = hashq_ref (globals, name, cell_f);
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}
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return x;
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}
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SCM
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module_ref (SCM module, SCM name)
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{
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if (g_debug > 4)
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{
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eputs ("module_ref: "); display_error_ (name); eputs ("\n");
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}
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SCM x = module_variable (module, name);
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if (x == cell_f)
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return cell_undefined;
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return CDR (x);
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}
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SCM
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module_define_x (SCM module, SCM name, SCM value)
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{
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if (g_debug > 4)
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{
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eputs ("module_define_x: "); display_error_ (name); eputs ("\n");
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}
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module = m0;
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SCM globals = struct_ref_ (module, 5);
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return hashq_set_x (globals, name, value);
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}
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