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doric-iOS/Pod/Classes/DoricContextManager.m

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+/*
+ * Copyright [2019] [Doric.Pub]
+ *
+ * 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.
+ */
+//
+//  DoricContextManager.m
+//  Doric
+//
+//  Created by pengfei.zhou on 2019/7/29.
+//
+
+#import "DoricContextManager.h"
+#import "DoricContext.h"
+
+@interface DoricContextManager ()
+
+@property(nonatomic) NSInteger counter;
+@property(nonatomic, strong) NSMutableDictionary *doricContextMap;
+@property(nonatomic, strong) dispatch_queue_t mapQueue;
+@end
+
+@implementation DoricContextManager
+
+- (instancetype)init {
+    if (self = [super init]) {
+        _doricContextMap = [[NSMutableDictionary alloc] init];
+        _counter = 0;
+        _mapQueue = dispatch_queue_create("doric.contextmap", DISPATCH_QUEUE_SERIAL);
+    }
+    return self;
+}
+
++ (instancetype)instance {
+    static DoricContextManager *_instance;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        _instance = [[DoricContextManager alloc] init];
+    });
+    return _instance;
+}
+
+- (void)createContext:(DoricContext *)context script:(NSString *)script source:(NSString *)source {
+    context.contextId = [NSString stringWithFormat:@"%ld", (long) ++self.counter];
+    [context.driver createContext:context.contextId script:script source:source];
+    dispatch_sync(self.mapQueue, ^() {
+        NSValue *value = [NSValue valueWithNonretainedObject:context];
+        [self.doricContextMap setValue:value forKey:context.contextId];
+    });
+}
+
+- (DoricContext *)getContext:(NSString *)contextId {
+    __block DoricContext *context;
+    dispatch_sync(self.mapQueue, ^{
+        NSValue *value = [self.doricContextMap valueForKey:contextId];
+        context = value.nonretainedObjectValue;
+    });
+    return context;
+}
+
+- (void)destroyContext:(DoricContext *)context {
+    NSString *contextId = context.contextId;
+    [context.driver destroyContext:contextId].finishCallback = ^{
+        dispatch_sync(self.mapQueue, ^() {
+            [self.doricContextMap removeObjectForKey:contextId];
+        });
+    };
+}
+
+- (NSArray *)aliveContexts {
+    return [self.doricContextMap allValues];
+}
+
+@end