第三次作业数据结构部分

group21/28394073/homework/bin/com/coderising/litestruts/struts.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<struts>
+    <action name="login" class="com.coderising.litestruts.LoginAction">
+        <result name="success">/jsp/homepage.jsp</result>
+        <result name="fail">/jsp/showLogin.jsp</result>
+    </action>
+    <action name="logout" class="com.coderising.action.LogoutAction">
+    	<result name="success">/jsp/welcome.jsp</result>
+    	<result name="error">/jsp/error.jsp</result>
+    </action>
+</struts>

group21/28394073/homework/src/com/coderising/jvm/Util.java

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+package com.coderising.jvm.util;
+
+public class Util {
+	public static int byteToInt(byte[] codes){
+    	String s1 = byteToHexString(codes);
+    	return Integer.valueOf(s1, 16).intValue();
+    }
+
+
+
+	public static String byteToHexString(byte[] codes ){
+		StringBuffer buffer = new StringBuffer();
+		for(int i=0;i<codes.length;i++){
+			byte b = codes[i];
+			int value = b & 0xFF;
+			String strHex = Integer.toHexString(value);
+			if(strHex.length()< 2){
+				strHex = "0" + strHex;
+			}		
+			buffer.append(strHex);
+		}
+		return buffer.toString();
+	}
+}

group21/28394073/homework/src/com/coderising/jvm/clz/AccessFlag.java

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+package com.coderising.jvm.clz;
+
+public class AccessFlag {
+	private int flagValue;
+
+	public AccessFlag(int value) {
+		this.flagValue = value;
+	}
+
+	public int getFlagValue() {
+		return flagValue;
+	}
+
+	public void setFlagValue(int flag) {
+		this.flagValue = flag;
+	}
+
+	public boolean isPublicClass(){
+		return (this.flagValue & 0x0001) != 0;
+	}
+	public boolean isFinalClass(){
+		return (this.flagValue & 0x0010) != 0;
+	}
+
+}

group21/28394073/homework/src/com/coderising/jvm/clz/ClassFile.java

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+package com.coderising.jvm.clz;
+
+import com.coderising.jvm.constant.ClassInfo;
+import com.coderising.jvm.constant.ConstantPool;
+
+public class ClassFile {
+
+	private int minorVersion;
+	private int majorVersion;
+
+	private AccessFlag accessFlag;
+	private ClassIndex clzIndex;
+	private ConstantPool pool;
+
+
+	public ClassIndex getClzIndex() {
+		return clzIndex;
+	}
+	public AccessFlag getAccessFlag() {
+		return accessFlag;
+	}
+	public void setAccessFlag(AccessFlag accessFlag) {
+		this.accessFlag = accessFlag;
+	}
+
+
+
+	public ConstantPool getConstantPool() {		
+		return pool;
+	}
+	public int getMinorVersion() {
+		return minorVersion;
+	}
+	public void setMinorVersion(int minorVersion) {
+		this.minorVersion = minorVersion;
+	}
+	public int getMajorVersion() {
+		return majorVersion;
+	}
+	public void setMajorVersion(int majorVersion) {
+		this.majorVersion = majorVersion;
+	}
+	public void setConstPool(ConstantPool pool) {
+		this.pool = pool;
+
+	}
+	public void setClassIndex(ClassIndex clzIndex) {
+		this.clzIndex = clzIndex;		
+	}
+
+
+
+
+	public void print(){
+
+		if(this.accessFlag.isPublicClass()){
+			System.out.println("Access flag : public  ");
+		}
+		System.out.println("Class Name:"+ getClassName());
+
+		System.out.println("Super Class Name:"+ getSuperClassName());
+
+
+	}
+
+	private String getClassName(){
+		int thisClassIndex = this.clzIndex.getThisClassIndex();
+		ClassInfo thisClass = (ClassInfo)this.getConstantPool().getConstantInfo(thisClassIndex);
+		return thisClass.getClassName();
+	}
+	private String getSuperClassName(){
+		ClassInfo superClass = (ClassInfo)this.getConstantPool().getConstantInfo(this.clzIndex.getSuperClassIndex());
+		return superClass.getClassName();
+	}
+}

group21/28394073/homework/src/com/coderising/jvm/clz/ClassIndex.java

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+package com.coderising.jvm.clz;
+
+public class ClassIndex {
+	private int thisClassIndex;
+	private int superClassIndex;
+
+	public int getThisClassIndex() {
+		return thisClassIndex;
+	}
+	public void setThisClassIndex(int thisClassIndex) {
+		this.thisClassIndex = thisClassIndex;
+	}
+	public int getSuperClassIndex() {
+		return superClassIndex;
+	}
+	public void setSuperClassIndex(int superClassIndex) {
+		this.superClassIndex = superClassIndex;
+	}
+}

group21/28394073/homework/src/com/coderising/jvm/constant/ClassInfo.java

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+package com.coderising.jvm.constant;
+
+public class ClassInfo extends ConstantInfo {
+	private int type = ConstantInfo.CLASS_INFO;
+	private int utf8Index ;
+	public ClassInfo(ConstantPool pool) {
+		super(pool); //这里不理解
+	}
+	public int getUtf8Index() {
+		return utf8Index;
+	}
+	public void setUtf8Index(int utf8Index) {
+		this.utf8Index = utf8Index;
+	}
+	public int getType() {
+		return type;
+	}
+
+	public String getClassName() {		
+		int index = getUtf8Index();
+		UTF8Info utf8Info = (UTF8Info)constantPool.getConstantInfo(index);
+		return utf8Info.getValue();		
+	}
+}

group21/28394073/homework/src/com/coderising/jvm/constant/ConstantInfo.java

@@ -0,0 +1,29 @@
+package com.coderising.jvm.constant;
+
+public abstract class ConstantInfo {
+	public static final int UTF8_INFO = 1;
+	public static final int FLOAT_INFO = 4;
+	public static final int CLASS_INFO = 7;
+	public static final int STRING_INFO = 8;
+	public static final int FIELD_INFO = 9;
+	public static final int METHOD_INFO = 10;
+	public static final int NAME_AND_TYPE_INFO = 12;
+	protected ConstantPool constantPool;
+
+	public ConstantInfo(){
+
+	}
+
+	public ConstantInfo(ConstantPool pool) {
+		this.constantPool = pool;
+	}
+	public abstract int getType();
+
+	public ConstantPool getConstantPool() {
+		return constantPool;
+	}
+	public ConstantInfo getConstantInfo(int index){
+		return this.constantPool.getConstantInfo(index);
+	}
+
+}

group21/28394073/homework/src/com/coderising/jvm/constant/ConstantPool.java

@@ -0,0 +1,29 @@
+package com.coderising.jvm.constant;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class ConstantPool {
+
+	private List<ConstantInfo> constantInfos = new ArrayList<ConstantInfo>();
+
+
+	public ConstantPool(){
+
+	}
+	public void addConstantInfo(ConstantInfo info){
+
+		this.constantInfos.add(info);
+
+	}
+
+	public ConstantInfo getConstantInfo(int index){
+		return this.constantInfos.get(index);
+	}
+	public String getUTF8String(int index){
+		return ((UTF8Info)this.constantInfos.get(index)).getValue();
+	}
+	public Object getSize() {		
+		return this.constantInfos.size() -1;
+	}
+}

group21/28394073/homework/src/com/coderising/jvm/constant/FieldRefInfo.java

@@ -0,0 +1,54 @@
+package com.coderising.jvm.constant;
+
+public class FieldRefInfo extends ConstantInfo{
+	private int type = ConstantInfo.FIELD_INFO;
+	private int classInfoIndex;
+	private int nameAndTypeIndex;
+
+	public FieldRefInfo(ConstantPool pool) {
+		super(pool);
+	}
+	public int getType() {
+		return type;
+	}
+
+	public int getClassInfoIndex() {
+		return classInfoIndex;
+	}
+	public void setClassInfoIndex(int classInfoIndex) {
+		this.classInfoIndex = classInfoIndex;
+	}
+	public int getNameAndTypeIndex() {
+		return nameAndTypeIndex;
+	}
+	public void setNameAndTypeIndex(int nameAndTypeIndex) {
+		this.nameAndTypeIndex = nameAndTypeIndex;
+	}
+
+	public String toString(){
+
+		NameAndTypeInfo  typeInfo = (NameAndTypeInfo)this.getConstantInfo(this.getNameAndTypeIndex());
+
+		return getClassName() +" : "+  typeInfo.getName() + ":" + typeInfo.getTypeInfo() +"]";
+	}
+
+	public String getClassName(){
+
+		ClassInfo classInfo = (ClassInfo) this.getConstantInfo(this.getClassInfoIndex());
+
+		UTF8Info utf8Info = (UTF8Info)this.getConstantInfo(classInfo.getUtf8Index());
+
+		return utf8Info.getValue();
+
+	}
+
+	public String getFieldName(){
+		NameAndTypeInfo  typeInfo = (NameAndTypeInfo)this.getConstantInfo(this.getNameAndTypeIndex());
+		return typeInfo.getName();		
+	}
+
+	public String getFieldType(){
+		NameAndTypeInfo  typeInfo = (NameAndTypeInfo)this.getConstantInfo(this.getNameAndTypeIndex());
+		return typeInfo.getTypeInfo();	
+	}
+}

group21/28394073/homework/src/com/coderising/jvm/constant/MethodRefInfo.java

@@ -0,0 +1,55 @@
+package com.coderising.jvm.constant;
+
+public class MethodRefInfo extends ConstantInfo {
+
+	private int type = ConstantInfo.METHOD_INFO;
+
+	private int classInfoIndex;	
+	private int nameAndTypeIndex;
+
+	public MethodRefInfo(ConstantPool pool) {
+		super(pool);
+	}
+
+	public int getType() {
+		return type;
+	}
+
+	public int getClassInfoIndex() {
+		return classInfoIndex;
+	}
+	public void setClassInfoIndex(int classInfoIndex) {
+		this.classInfoIndex = classInfoIndex;
+	}
+	public int getNameAndTypeIndex() {
+		return nameAndTypeIndex;
+	}
+	public void setNameAndTypeIndex(int nameAndTypeIndex) {
+		this.nameAndTypeIndex = nameAndTypeIndex;
+	}
+
+	public String toString(){
+
+		return getClassName() +" : "+ this.getMethodName() + " : " + this.getParamAndReturnType() ;
+	}
+	public String getClassName(){
+		ConstantPool pool = this.getConstantPool();		
+		ClassInfo clzInfo = (ClassInfo)pool.getConstantInfo(this.getClassInfoIndex());
+		return clzInfo.getClassName();
+	}
+
+	public String getMethodName(){
+		ConstantPool pool = this.getConstantPool();
+		NameAndTypeInfo  typeInfo = (NameAndTypeInfo)pool.getConstantInfo(this.getNameAndTypeIndex());
+		return typeInfo.getName();
+	}
+
+	public String getParamAndReturnType(){
+		ConstantPool pool = this.getConstantPool();
+		NameAndTypeInfo  typeInfo = (NameAndTypeInfo)pool.getConstantInfo(this.getNameAndTypeIndex());
+		return typeInfo.getTypeInfo();
+	}
+
+
+
+}