Big refactorHEADmaster

1 files changed, 36 insertions, 0 deletions

diff --git a/src/runtime/value/nativedata.c b/src/runtime/value/nativedata.c
new file mode 100644
index 0000000..5c6fe2b
--- /dev/null
+++ b/src/runtime/value/nativedata.c
@@ -0,0 +1,36 @@
+#include <lcq/pit/runtime/value/nativedata.h>
+
+bool pit_value_is_nativedata(pit_runtime *rt, pit_value a) {
+    return pit_value_is_ref_heavy_sort(rt, a, PIT_VALUE_HEAVY_SORT_NATIVEDATA);
+}
+pit_value pit_value_nativedata_new(pit_runtime *rt, pit_value tag, void *d) {
+    pit_value ret = pit_value_ref_heavy_new(rt);
+    pit_value_heavy *h = pit_value_ref_deref(rt, pit_value_as_ref(rt, ret));
+    if (!h) { pit_error(rt, "failed to create new heavy value for nativedata"); return PIT_NIL; }
+    h->hsort = PIT_VALUE_HEAVY_SORT_NATIVEDATA;
+    h->in.nativedata.tag = tag;
+    h->in.nativedata.data = d;
+    return ret;
+}
+void *pit_value_nativedata_get(pit_runtime *rt, pit_value tag, pit_value v) {
+    pit_value_heavy *h = NULL;
+    if (pit_value_sort(v) != PIT_VALUE_SORT_REF) {
+        pit_error(rt, "value was not a reference");
+        return NULL;
+    }
+    h = pit_value_ref_deref(rt, pit_value_as_ref(rt, v));
+    if (!h) { pit_error(rt, "bad ref"); return NULL; }
+    if (h->hsort != PIT_VALUE_HEAVY_SORT_NATIVEDATA) {
+        pit_error(rt, "invalid use of value as nativedata");
+        return NULL;
+    }
+    if (!pit_value_eq(h->in.nativedata.tag, tag)) {
+        pit_error(rt, "native value does not match tag");
+        return NULL;
+    }
+    if (!h->in.nativedata.data) {
+        pit_error(rt, "nativedata was already freed");
+        return NULL;
+    }
+    return h->in.nativedata.data;
+}