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Pods/FirebaseMessaging/Firebase/Messaging/NSDictionary+FIRMessaging.m

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+/*
+ * 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.
+ */
+
+#import "NSDictionary+FIRMessaging.h"
+
+@implementation NSDictionary (FIRMessaging)
+
+- (NSString *)fcm_string {
+  NSMutableString *dictAsString = [NSMutableString string];
+  NSString *separator = @"|";
+  for (id key in self) {
+    id value = self[key];
+    if ([key isKindOfClass:[NSString class]] && [value isKindOfClass:[NSString class]]) {
+      [dictAsString appendFormat:@"%@:%@%@", key, value, separator];
+    }
+  }
+  // remove the last separator
+  if ([dictAsString length]) {
+    [dictAsString deleteCharactersInRange:NSMakeRange(dictAsString.length - 1, 1)];
+  }
+  return [dictAsString copy];
+}
+
+- (BOOL)fcm_hasNonStringKeysOrValues {
+  for (id key in self) {
+    id value = self[key];
+    if (![key isKindOfClass:[NSString class]] || ![value isKindOfClass:[NSString class]]) {
+      return YES;
+    }
+  }
+  return NO;
+}
+
+- (NSDictionary *)fcm_trimNonStringValues {
+  NSMutableDictionary *trimDictionary =
+      [NSMutableDictionary dictionaryWithCapacity:self.count];
+  for (id key in self) {
+    id value = self[key];
+    if ([key isKindOfClass:[NSString class]] && [value isKindOfClass:[NSString class]]) {
+      trimDictionary[(NSString *)key] = value;
+    }
+  }
+  return trimDictionary;
+}
+
+@end