feat: initial commit

vendor/sourcery.dny.nu/pana/pana.go

@@ -0,0 +1,58 @@
+package pana
+
+import (
+	"unsafe"
+
+	ld "sourcery.dny.nu/longdistance"
+)
+
+// Has checks if an object has a specific property set.
+//
+// It handles JSON-LD keyword aliasses for id and type.
+func Has[T ld.Internal](in *T, property string) bool {
+	if property == "id" {
+		property = ld.KeywordID
+	}
+
+	if property == "type" {
+		property = ld.KeywordType
+	}
+
+	return (*ld.Node)(unsafe.Pointer(in)).Has(property)
+}
+
+// IsReference indicates if this object is a reference.
+//
+// This means it only has the ID, and optionally a Type, set. You'll need to
+// retrieve the object using the ID to get additional properties.
+func IsReference[T ld.Internal](in *T) bool {
+	return (*ld.Node)(unsafe.Pointer(in)).IsSubjectReference()
+}
+
+// IsObject indicates if this object is a (partially) complete object.
+//
+// This means it has an ID, optionally a Type and at least one other
+// property. It doesn't mean the object representation is complete, and you may
+// need to retrieve the object using the ID to get additional properties.
+func IsObjec[T ld.Internal](in *T) bool {
+	return (*ld.Node)(unsafe.Pointer(in)).IsSubject()
+}
+
+// Properties returns a set with an entry for each property set on an object.
+//
+// It handles JSON-LD keyword aliasses for id and type.
+func Properties[T ld.Internal](in *T) map[string]struct{} {
+	s := (*ld.Node)(unsafe.Pointer(in)).PropertySet()
+
+	if _, ok := s[ld.KeywordID]; ok {
+		delete(s, ld.KeywordID)
+		s["id"] = struct{}{}
+	}
+
+	if _, ok := s[ld.KeywordType]; ok {
+		delete(s, ld.KeywordType)
+		s["type"] = struct{}{}
+	}
+
+	return s
+}