Enjoy 3.2 release ^_^

src/main/java/com/jfinal/template/expr/ast/Map.java

@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2011-2017, James Zhan 詹波 (jfinal@126.com).
+ *
+ * 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.
+ */
+
+package com.jfinal.template.expr.ast;
+
+import java.util.LinkedHashMap;
+import java.util.Map.Entry;
+import com.jfinal.template.stat.Scope;
+
+/**
+ * Map
+ * 
+ * 1：定义 map 常量
+ *   {k1:123, k2:"abc", 'k3':true, "k4":[1,2,3], k5:1+2}
+ *   如上所示，map定义的 key 可以为 String 或者 id 标识符，而右侧的 value 可以是任意的常量与表达式
+ * 
+ * 2：取值
+ *   先将 Map 常量赋值给某个变量： #set(map = {...})
+ *   map['k1']
+ *   map["k1"]
+ *   map[expr]
+ *   map.get("k1")
+ *   map.k1
+ *   
+ *   如上所示，当以下标方式取值时，下标参数可以是 string 与  expr，而 expr 求值以后的值必须也为 string类型
+ *   当用 map.k1 这类 field 字段取值形式时，则是使用 id 标识符，而不是 string 形参数
+ *   
+ *   注意：即便是定义的时候 key 用的是 id 标识符，但在取值时也要用 string 类型下标参数或 expr 求值后为 string
+ *        定义时 key 可以使用 id 标识符是为了书写方便，本质上仍然是 string
+ * 
+ * 3：可创建空 map，如： #(map = {})
+ */
+public class Map extends Expr {
+	
+	private LinkedHashMap<Object, Expr> map;
+	
+	public Map(LinkedHashMap<Object, Expr> map) {
+		this.map = map;
+	}
+	
+	public Object eval(Scope scope) {
+		LinkedHashMap<Object, Object> valueMap = new LinkedHashMap<Object, Object>(map.size());
+		for (Entry<Object, Expr> e : map.entrySet()) {
+			valueMap.put(e.getKey(), e.getValue().eval(scope));
+		}
+		return valueMap;
+	}
+}
+
+
+
+
+
+