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-rw-r--r--libguile/vm-i-scheme.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/libguile/vm-i-scheme.c b/libguile/vm-i-scheme.c
index c9b40ee56..6faab9be1 100644
--- a/libguile/vm-i-scheme.c
+++ b/libguile/vm-i-scheme.c
@@ -621,6 +621,40 @@ BV_FLOAT_SET (f64, ieee_double, double, 8)
#undef BV_INT_SET
#undef BV_FLOAT_SET
+#define VM_VALIDATE_STRUCT(obj) \
+ if (SCM_UNLIKELY (!SCM_STRUCTP (obj))) \
+ { \
+ finish_args = (obj); \
+ goto vm_error_not_a_struct; \
+ }
+
+VM_DEFINE_FUNCTION (174, struct_p, "struct?", 1)
+{
+ ARGS1 (obj);
+ RETURN (scm_from_bool (SCM_STRUCTP (obj)));
+}
+
+VM_DEFINE_FUNCTION (175, struct_vtable, "struct-vtable", 1)
+{
+ ARGS1 (obj);
+ VM_VALIDATE_STRUCT (obj);
+ RETURN (SCM_STRUCT_VTABLE (obj));
+}
+
+VM_DEFINE_INSTRUCTION (176, make_struct, "make-struct", 2, -1, 1)
+{
+ unsigned h = FETCH ();
+ unsigned l = FETCH ();
+ int n_args = ((h << 8U) + l);
+ SCM vtable = sp[1 - n_args], n_tail = sp[2 - n_args];
+ const SCM *inits = sp - n_args + 3;
+
+ sp -= n_args - 1;
+
+ RETURN (scm_c_make_structv (vtable, scm_to_size_t (n_tail),
+ n_args - 2, (scm_t_bits *) inits));
+}
+
/*
(defun renumber-ops ()
"start from top of buffer and renumber 'VM_DEFINE_FOO (\n' sequences"