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Program.cs
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Program.cs
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/*
* Created by SharpDevelop.
* User: Mrui
* Date: 2021/6/26
* Time: 9:34
*
* To change this template use Tools | Options | Coding | Edit Standard Headers.
*/
using System;
using System.Collections.Generic;
using System.Collections;
using minij.classpath;
using minij.classfile;
using minij.rtda;
using minij.rtda.heap;
using minij.instructions;
namespace minij
{
class Program
{
public static JVMConfig config = new JVMConfig();
public static void Main(string[] args)
{
parseArgs(args);
if (config == null ||
config.mainClass == null ||
config.mainClass.Length < 1) {
Console.WriteLine("用法: minij.exe [-options] class [args...]");
return;
}
initArgs(config);
initJVM();
bootJVM();
}
private static void bootJVM()
{
Classpath c = new Classpath();
c.init(config);
ClassLoader loader = new ClassLoader(c);
Class clz = loader.load(config.mainClass);
if(clz == null)
{
Console.WriteLine("错误: 找不到或无法加载主类 " + config.mainClass);
return;
}
Method method = clz.getMethod("main", "([Ljava/lang/String;)V", true);
if(null == method) {
Console.WriteLine("Not Found Main Method");
return;
}
Interpreter inter = new Interpreter();
inter.start(method);
}
private static void initJVM()
{
// todo
NativeMethod.initNativeMethod();
}
private static void initArgs(JVMConfig config)
{
if (config.cp != null ) {
config.classpath = config.cp;
}
if (config.classpath != null)
{
config.cp = config.classpath;
}
if (config.verbose)
{
Console.WriteLine("打开详细输出模式");
Console.WriteLine("启动类:" + config.mainClass);
Console.WriteLine("用户JRE目录:" + config.Xjre);
Console.WriteLine("CLASSPATH:" + config.cp);
}
}
public static string safeGetArg(string[] args, int index)
{
if (index < 0 || index >= args.Length) return "";
return args[index];
}
public static void parseArgs(string[] args) {
if (args.Length < 1) return;
List<string> argsl = new List<string>();
for (int i = 0; i < args.Length; i+=1)
{
string key = safeGetArg(args, i);
string val = safeGetArg(args, i + 1);
if (key.Contains("-"))
{
key = key.ToLower();
var count = setArg(key, val);
i += count;
argsl.Add(key);
if(count > 0)
{
argsl.Add(val);
}
}
else
{
if(config.mainClass == null)
{
config.mainClass = key;
} else {
argsl.Add(key);
}
}
}
config.bootArgs = argsl.ToArray();
}
private static int setArg(string key, string v)
{
switch(key)
{
case "-cp":
case "-classpath":
config.cp = v;
config.classpath = v;
return 1;
case "-verbose":
case "-v":
config.verbose = true;
return 0;
case "-xjre":
config.Xjre = v;
return 1;
case "-mainclass":
config.mainClass = v;
return 1;
}
return 0;
}
}
}