iOS:use JSDispatcher to avoid overstock too many js tasks

doric-iOS/Pod/Classes/Util/DoricJSDispatcher.h

@@ -0,0 +1,25 @@
+/*
+ * 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.
+ */
+//
+// Created by pengfei.zhou on 2020/3/25.
+//
+
+#import <Foundation/Foundation.h>
+#import "DoricViewNode.h"
+
+@interface DoricJSDispatcher : NSObject
+- (void)dispatch:(DoricAsyncResult *(^)(void))block;
+@end

doric-iOS/Pod/Classes/Util/DoricJSDispatcher.m

@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+//
+// Created by pengfei.zhou on 2020/3/25.
+//
+
+#import "DoricJSDispatcher.h"
+
+@interface DoricJSDispatcher ()
+@property(nonatomic, strong) NSMutableArray <DoricAsyncResult *(^)(void)> *blocks;
+@property(nonatomic, assign) BOOL consuming;
+@end
+
+@implementation DoricJSDispatcher
+- (void)dispatch:(DoricAsyncResult *(^)(void))block {
+    if (!self.blocks) {
+        self.blocks = [@[block] mutableCopy];
+    } else {
+        while (self.blocks.count > 0) {
+            [self.blocks removeLastObject];
+        }
+        [self.blocks insertObject:block atIndex:0];
+    }
+    if (!self.consuming) {
+        [self consume];
+    }
+}
+
+- (void)consume {
+    DoricAsyncResult *(^block )(void) = self.blocks.lastObject;
+    if (block) {
+        self.consuming = YES;
+        [self.blocks removeLastObject];
+        DoricAsyncResult *result = block();
+        __weak typeof(self) __self = self;
+        result.finishCallback = ^{
+            dispatch_async(dispatch_get_main_queue(), ^{
+                __strong typeof(__self) self = __self;
+                [self consume];
+            });
+        };
+    } else {
+        self.consuming = NO;
+    }
+}
+@end