implement C++ assert (stdio, apple) (#612)

* implement C++ assert (stdio, apple)

* Update tests for firebase_firestore_util renames

* renaming `assert.h` to `firebase_assert.h`

* refactoring to a common `WrapNSStringNoCopy()`

1 files changed, 44 insertions, 0 deletions

diff --git a/Firestore/core/src/firebase/firestore/util/assert_apple.mm b/Firestore/core/src/firebase/firestore/util/assert_apple.mm
new file mode 100644
index 0000000..0447d6c
--- /dev/null
+++ b/Firestore/core/src/firebase/firestore/util/assert_apple.mm
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/firebase/firestore/util/firebase_assert.h"
+
+#import <Foundation/Foundation.h>
+
+#include <string.h>
+
+#include "Firestore/core/src/firebase/firestore/util/string_apple.h"
+
+namespace firebase {
+namespace firestore {
+namespace util {
+
+void FailAssert(const char* file, const char* func, const int line, const char* format, ...) {
+  va_list args;
+  va_start(args, format);
+  NSString *description = [[NSString alloc] initWithFormat:WrapNSStringNoCopy(format) arguments:args];
+  va_end(args);
+  [[NSAssertionHandler currentHandler]
+      handleFailureInFunction:WrapNSStringNoCopy(func)
+                         file:WrapNSStringNoCopy(file)
+                   lineNumber:line
+     description:@"FIRESTORE INTERNAL ASSERTION FAILED: %@", description];
+  abort();
+}
+
+}  // namespace util
+}  // namespace firestore
+}  // namespace firebase