115 lines
2.9 KiB
Java
115 lines
2.9 KiB
Java
/**
|
|
* Copyright (c) 2011-2019, 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.stat;
|
|
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
/**
|
|
* Symbol
|
|
*/
|
|
enum Symbol {
|
|
|
|
TEXT("text", false),
|
|
|
|
OUTPUT("output", true),
|
|
|
|
DEFINE("define", true),
|
|
CALL("call", true),
|
|
CALL_IF_DEFINED("callIfDefined", true),
|
|
SET("set", true),
|
|
SET_LOCAL("setLocal", true),
|
|
SET_GLOBAL("setGlobal", true),
|
|
INCLUDE("include", true),
|
|
|
|
FOR("for", true),
|
|
IF("if", true),
|
|
ELSEIF("elseif", true),
|
|
ELSE("else", false),
|
|
END("end", false),
|
|
CONTINUE("continue", false),
|
|
BREAK("break", false),
|
|
RETURN("return", false),
|
|
|
|
SWITCH("switch", true),
|
|
CASE("case", true),
|
|
DEFAULT("default", false),
|
|
|
|
ID("ID", false), // 标识符：下划线或字母开头 ^[A-Za-z_][A-Za-z0-9_]*$
|
|
PARA("PARA", false),
|
|
|
|
EOF("EOF", false);
|
|
|
|
private final String name;
|
|
private final boolean hasPara; // 是否有参
|
|
|
|
/**
|
|
* Lexer 中确定为系统指令以后，必须得到正确的后续 Token 序列，否则报异常
|
|
* 扩展指令在得到 # id ( 序列以后才要求得到正确的后续 Token 序列，否则仅仅 return fail()
|
|
*/
|
|
@SuppressWarnings("serial")
|
|
private static final Map<String, Symbol> keywords = new HashMap<String, Symbol>(64) {{
|
|
put(Symbol.IF.getName(), IF);
|
|
put(Symbol.ELSEIF.getName(), ELSEIF);
|
|
put(Symbol.ELSE.getName(), ELSE);
|
|
put(Symbol.END.getName(), END);
|
|
put(Symbol.FOR.getName(), FOR);
|
|
put(Symbol.BREAK.getName(), BREAK);
|
|
put(Symbol.CONTINUE.getName(), CONTINUE);
|
|
put(Symbol.RETURN.getName(), RETURN);
|
|
|
|
put(Symbol.SWITCH.getName(), SWITCH);
|
|
put(Symbol.CASE.getName(), CASE);
|
|
put(Symbol.DEFAULT.getName(), DEFAULT);
|
|
|
|
put(Symbol.DEFINE.getName(), DEFINE);
|
|
put(Symbol.SET.getName(), SET);
|
|
put(Symbol.SET_LOCAL.getName(), SET_LOCAL);
|
|
put(Symbol.SET_GLOBAL.getName(), SET_GLOBAL);
|
|
put(Symbol.INCLUDE.getName(), INCLUDE);
|
|
}};
|
|
|
|
private Symbol(String name, boolean hasPara) {
|
|
this.name = name;
|
|
this.hasPara = hasPara;
|
|
}
|
|
|
|
public String getName() {
|
|
return name;
|
|
}
|
|
|
|
public String toString() {
|
|
return name;
|
|
}
|
|
|
|
boolean hasPara() {
|
|
return hasPara;
|
|
}
|
|
|
|
boolean noPara() {
|
|
return !hasPara;
|
|
}
|
|
|
|
public static Symbol getKeywordSym(String name) {
|
|
return keywords.get(name);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|