Repo cloned

libsignal-service/src/main/java/com/squareup/wire/internal/CountNonDefault.kt

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2023 Signal Messenger, LLC
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+package com.squareup.wire.internal
+
+import okio.ByteString
+
+/**
+ * File inspired by countNonNull implementations in com.squareup.wire.internal.Internal.kt
+ *
+ * Do not change the name without also updating the name used in wire-handler jar project. Our custom
+ * handler tweaks the generated proto code to call this less restrictive oneOf validators. Wire requires
+ * at most one non-null but iOS can't handle that currently, so we use at most one non-null and non-default.
+ *
+ * For example, a oneOf property that is an int but set to 0 is valid.
+ */
+
+/** Do not change the name. Returns the number of non-null values in `a, b`. */
+fun countNonDefa(a: Any?, b: Any?): Int {
+  return a.isNonDefault() + b.isNonDefault()
+}
+
+/** Do not change the name. Returns the number of non-null values in `a, b, c`. */
+fun countNonDefa(a: Any?, b: Any?, c: Any?): Int {
+  return a.isNonDefault() + b.isNonDefault() + c.isNonDefault()
+}
+
+/** Do not change the name. Returns the number of non-null values in `a, b, c, d, rest`. */
+fun countNonDefa(a: Any?, b: Any?, c: Any?, d: Any?, vararg rest: Any?): Int {
+  var result = 0
+  result += a.isNonDefault()
+  result += b.isNonDefault()
+  result += c.isNonDefault()
+  result += d.isNonDefault()
+  for (o in rest) {
+    result += o.isNonDefault()
+  }
+  return result
+}
+
+private fun Any?.isNonDefault(): Int {
+  return when {
+    this == null -> 0
+    this is Boolean && this == false -> 0
+    this is ByteString && this.size == 0 -> 0
+    this is Byte && this == 0.toByte() -> 0
+    this is Short && this == 0.toShort() -> 0
+    this is Int && this == 0 -> 0
+    this is Long && this == 0L -> 0
+    this is String && this == "" -> 0
+    this is Double && this == 0.0 -> 0
+    this is Float && this == 0f -> 0
+    else -> 1
+  }
+}