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16
README.md
16
README.md
@@ -2,15 +2,25 @@
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Enjoy 是基于 Java 语言的极轻量极魔板引擎。极轻量级仅 171K 并且不依赖任何第三方。极简设计仅 if、for、switch、set、define、include、render 七个核心指令,让学习成本低到极致。独创 DKFF(Dynamic Key Feature Forward) 词法分析算法与 DLRD (Double Layer Recursive Descent)语法分析算法,避免使用 javacc、antlr、jflex 生成器,令代码量少到极致。
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#### Maven 坐标
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```java
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<dependency>
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<groupId>com.jfinal</groupId>
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<artifactId>enjoy</artifactId>
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<version>4.2</version>
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</dependency>
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```
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#### Enjoy 主要特点
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- 消灭传统模板引擎中大量繁杂概念,仅七个核心指令,学习成本极低
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- 独创 DKFF 词法分析算法与 DLRD 语法分析算法,避免使用 javacc、antlr
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- 功能强大,极为简单覆盖掉 freemarker、velocity 的核心功能
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- 扩展性强,支持多种扩展方式,且是唯一支持指令级扩展的模板引擎
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- 与 java 打通式设计,在模板中与 java 交互极为方便
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- 贴近 java 使用直觉,为 java 开发者量身打造
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- 功能强大,极为简单覆盖掉 freemarker、velocity 的核心功能
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- 扩展性强,支持多种扩展方式,且是唯一支持指令级扩展的模板引擎
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- 回归模板引擎渲染 View 数据的本质,采用指令式设计,避免 view 层表达复杂逻辑
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- 体积小,仅 171K,且不依赖于任何第三方
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- 体积小,仅 227 KB,且不依赖于任何第三方
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#### 简单示例:
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2
pom.xml
2
pom.xml
@@ -4,7 +4,7 @@
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<artifactId>enjoy</artifactId>
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<packaging>jar</packaging>
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<name>enjoy</name>
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<version>3.8</version>
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<version>4.2</version>
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<url>http://www.jfinal.com</url>
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<description>Enjoy is a simple, light, rapid, independent, extensible Java Template Engine.</description>
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@@ -30,11 +30,6 @@ import java.util.Map;
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@SuppressWarnings({"serial", "rawtypes", "unchecked"})
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public class Kv extends HashMap {
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@Deprecated
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private static final String STATE_OK = "isOk";
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@Deprecated
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private static final String STATE_FAIL = "isFail";
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public Kv() {
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}
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@@ -46,68 +41,6 @@ public class Kv extends HashMap {
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return new Kv();
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}
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@Deprecated
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public static Kv ok() {
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return new Kv().setOk();
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}
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@Deprecated
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public static Kv ok(Object key, Object value) {
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return ok().set(key, value);
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}
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@Deprecated
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public static Kv fail() {
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return new Kv().setFail();
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}
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@Deprecated
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public static Kv fail(Object key, Object value) {
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return fail().set(key, value);
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}
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@Deprecated
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public Kv setOk() {
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super.put(STATE_OK, Boolean.TRUE);
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super.put(STATE_FAIL, Boolean.FALSE);
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return this;
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}
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@Deprecated
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public Kv setFail() {
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super.put(STATE_FAIL, Boolean.TRUE);
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super.put(STATE_OK, Boolean.FALSE);
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return this;
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}
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@Deprecated
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public boolean isOk() {
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Boolean isOk = (Boolean)get(STATE_OK);
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if (isOk != null) {
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return isOk;
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}
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Boolean isFail = (Boolean)get(STATE_FAIL);
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if (isFail != null) {
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return !isFail;
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}
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throw new IllegalStateException("调用 isOk() 之前,必须先调用 ok()、fail() 或者 setOk()、setFail() 方法");
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}
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@Deprecated
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public boolean isFail() {
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Boolean isFail = (Boolean)get(STATE_FAIL);
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if (isFail != null) {
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return isFail;
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}
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Boolean isOk = (Boolean)get(STATE_OK);
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if (isOk != null) {
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return !isOk;
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}
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throw new IllegalStateException("调用 isFail() 之前,必须先调用 ok()、fail() 或者 setOk()、setFail() 方法");
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}
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public Kv set(Object key, Object value) {
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super.put(key, value);
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return this;
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@@ -16,6 +16,9 @@
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package com.jfinal.kit;
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import java.lang.reflect.Method;
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import java.lang.reflect.Parameter;
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/**
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* 反射工具类
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*/
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@@ -29,6 +32,45 @@ public class ReflectKit {
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}
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}
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public static String getMethodSignature(Method method) {
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StringBuilder ret = new StringBuilder()
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.append(method.getDeclaringClass().getName())
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.append(".")
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.append(method.getName())
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.append("(");
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int index = 0;
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Parameter[] paras = method.getParameters();
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for (Parameter p : paras) {
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if (index++ > 0) {
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ret.append(", ");
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}
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ret.append(p.getParameterizedType().getTypeName());
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}
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return ret.append(")").toString();
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}
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/*
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public static String getMethodSignature(Method method) {
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StringBuilder ret = new StringBuilder()
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.append(method.getDeclaringClass().getName())
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.append(".")
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.append(method.getName())
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.append("(");
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int index = 0;
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java.lang.reflect.Type[] paraTypes = method.getGenericParameterTypes();
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for (java.lang.reflect.Type type : paraTypes) {
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if (index++ > 0) {
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ret.append(", ");
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}
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ret.append(type.getTypeName());
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}
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return ret.append(")").toString();
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}*/
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}
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@@ -28,10 +28,10 @@ import com.jfinal.template.stat.Scope;
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*
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* field 表达式取值优先次序,以 user.name 为例
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* 1:假如 user.getName() 存在,则优先调用
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* 2:假如 user 为 Model 子类,则调用 user.get("name")
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* 3:假如 user 为 Record,则调用 user.get("name")
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* 4:假如 user 为 Map,则调用 user.get("name")
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* 5:假如 user 具有 public name 属性,则取 user.name 属性值
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* 2:假如 user 具有 public name 属性,则取 user.name 属性值
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* 3:假如 user 为 Model 子类,则调用 user.get("name")
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* 4:假如 user 为 Record,则调用 user.get("name")
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* 5:假如 user 为 Map,则调用 user.get("name")
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*/
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public class Field extends Expr {
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@@ -44,10 +44,13 @@ public class FieldKit {
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LinkedList<FieldGetter> ret = new LinkedList<FieldGetter>();
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ret.addLast(new GetterMethodFieldGetter(null));
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ret.addLast(new RealFieldGetter(null));
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// ret.addLast(new ModelFieldGetter());
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// ret.addLast(new RecordFieldGetter());
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ret.addLast(new MapFieldGetter());
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ret.addLast(new RealFieldGetter(null));
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// 挪到第二的位置,addSharedObject(..., modelObj) 用法可以获取到 model 中的 public 属性
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// ret.addLast(new RealFieldGetter(null));
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ret.addLast(new ArrayLengthGetter());
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// ret.addLast(new IsMethodFieldGetter());
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