1 files changed, 77 insertions, 0 deletions
diff --git a/Firestore/Source/Util/FSTAssert.h b/Firestore/Source/Util/FSTAssert.h
new file mode 100644
index 0000000..77bbb1d
--- /dev/null
+++ b/Firestore/Source/Util/FSTAssert.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2017 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 <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+// Fails the current Objective-C method if the given condition is false.
+//
+// Unlike NSAssert, this macro is never compiled out if assertions are disabled.
+#define FSTAssert(condition, format, ...) \
+  do {                                    \
+    if (!(condition)) {                   \
+      FSTFail((format), ##__VA_ARGS__);   \
+    }                                     \
+  } while (0)
+
+// Fails the current C function if the given condition is false.
+//
+// Unlike NSCAssert, this macro is never compiled out if assertions are disabled.
+#define FSTCAssert(condition, format, ...) \
+  do {                                     \
+    if (!(condition)) {                    \
+      FSTCFail((format), ##__VA_ARGS__);   \
+    }                                      \
+  } while (0)
+
+// Unconditionally fails the current Objective-C method.
+//
+// This macro fails by calling [[NSAssertionHandler currentHandler] handleFailureInMethod]. It
+// also calls abort(3) in order to make this macro appear to never return, even though the call
+// to handleFailureInMethod itself never returns.
+#define FSTFail(format, ...)                                                             \
+  do {                                                                                   \
+    NSString *_file = [NSString stringWithUTF8String:__FILE__];                          \
+    NSString *_description = [NSString stringWithFormat:(format), ##__VA_ARGS__];        \
+    [[NSAssertionHandler currentHandler]                                                 \
+        handleFailureInMethod:_cmd                                                       \
+                       object:self                                                       \
+                         file:_file                                                      \
+                   lineNumber:__LINE__                                                   \
+                  description:@"FIRESTORE INTERNAL ASSERTION FAILED: %@", _description]; \
+    abort();                                                                             \
+  } while (0)
+
+// Unconditionally fails the current C function.
+//
+// This macro fails by calling [[NSAssertionHandler currentHandler] handleFailureInFunction]. It
+// also calls abort(3) in order to make this macro appear to never return, even though the call
+// to handleFailureInFunction itself never returns.
+#define FSTCFail(format, ...)                                                              \
+  do {                                                                                     \
+    NSString *_file = [NSString stringWithUTF8String:__FILE__];                            \
+    NSString *_function = [NSString stringWithUTF8String:__PRETTY_FUNCTION__];             \
+    NSString *_description = [NSString stringWithFormat:(format), ##__VA_ARGS__];          \
+    [[NSAssertionHandler currentHandler]                                                   \
+        handleFailureInFunction:_function                                                  \
+                           file:_file                                                      \
+                     lineNumber:__LINE__                                                   \
+                    description:@"FIRESTORE INTERNAL ASSERTION FAILED: %@", _description]; \
+    abort();                                                                               \
+  } while (0)
+
+NS_ASSUME_NONNULL_END