add Password value type, for masking in logs

CHANGELOG.md

@@ -1,5 +1,5 @@
 # Unreleased
-* core: added common value types for Email and Phone, also StringValue base class
+* core: added common value types for Email, Phone, and Password, also StringValue base class
 
 # 1.6.3
 * server: added support for SSE (Server-Side Events) to `HttpExchange`

core/src/Types.kt

@@ -3,7 +3,7 @@ package klite
 /** Base class for String-based normalized value types */
 abstract class StringValue(val value: String) {
   override fun toString() = value
-  override fun equals(other: Any?) = value == (other as? StringValue)?.value
+  override fun equals(other: Any?) = other != null && javaClass == other.javaClass && value == (other as StringValue).value
   override fun hashCode() = value.hashCode()
 }
 
@@ -22,3 +22,7 @@ class Phone(phone: String): StringValue(phone.replace(removeChars, "")) {
     "International phone number should start with + and have at least 10 digits: $value" }
   }
 }
+
+class Password(value: String): StringValue(value) {
+  override fun toString() = "Password<***>"
+}