module: raw import from guile
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src/module.c
64
src/module.c
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@ -44,3 +44,67 @@ module_define_x (struct scm *module, struct scm *name, struct scm *value)
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{
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return hashq_set_x (M0, name, value);
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}
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struct scm *
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scm_module_lookup_closure (struct scm *module)
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{
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if (module == cell_f)
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return cell_f;
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else
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return struct_ref (module, MODULE_EVAL_CLOSURE);
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}
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struct scm *
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scm_current_module_lookup_closure ()
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{
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if (scm_module_system_booted_p)
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return scm_module_lookup_closure (scm_current_module ());
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return cell_f;
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}
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struct scm *
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scm_eval_closure_lookup (struct scm *eclo, struct scm *name, struct scm *define_p)
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{
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struct scm *module = eclo;
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if (define_p == cell_f)
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return module_variable (module, name);
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else
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{
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#if 0
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if (struct scm *_EVAL_CLOSURE_INTERFACE_P (eclo))
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return struct cell_f;
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#endif
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return apply (module_make_local_var_x_var, cons (module, cons (name, cell_nil)));
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}
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}
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struct scm *
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module_variable (struct scm *module, struct scm *name)
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{
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/* 1. Check module obarray */
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struct scm *a = struct_ref_ (module, MODULE_OBARRAY);
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struct scm *b = scm_hashq_ref (a, name, cell_f);
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if (b != cell_f)
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return b;
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/* 2. Custom binder */
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struct scm *binder = struct_ref (module, MODULE_BINDER);
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if (binder != cell_f)
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{
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b = apply (binder->cdr, (cons (module, cons (name, cons (cell_f, cell_nil)))), cell_f);
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if (b != cell_f)
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return b;
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}
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/* 3. Search the use list */
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struct scm *uses = struct_ref (module, MODULE_USES);
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while (uses->type == TPAIR)
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{
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b = module_variable (uses->car, name);
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if (b != cell_f)
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return b;
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uses = uses->cdr;
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}
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return cell_f;
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}
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