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codestatemachine2.java
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252 lines (205 loc) · 8.35 KB
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/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package codeanalyzer;
import javax.swing.tree.DefaultMutableTreeNode;
/**
*
* @author susdeshp
*/
public class codestatemachine2 {
public static final int S_INSIDECODEBLOCK = 3;
public static final int S_INSIDECOMMENTBLOCK = 4;
public static final int S_ONCOMMENTLINE = 5;
public static final int S_PREPROCESSORLINE = 6;
public static final int E_SEMICOLON = 3;
public static final int E_CURVEDOPENBRACKET = 4;
public static final int E_CURVEDCLOSEDBRACKET = 5;
public static final int E_CURLYOPENBRACKET = 6;
public static final int E_CURLYCLOSEDBRACKET = 7;
public static final int E_SQUAREOPENBRACKET = 8;
public static final int E_SQUARECLOSEDBRACKET = 9;
public static final int E_FORWARDSLASH = 10;
public static final int E_BACKWARDSLASH = 11;
public static final int E_SPACE = 12;
public static final int E_STAR = 13;
public static final int E_RETURN = 14;
public static final int E_HASH = 15;
public static final int E_COLON = 16;
public static final int E_TAB = 17;
public static final int E_NULL = 0;
private int LastEvent;
private int CurrentState;
private int CurrentEvent;
private char CurrentChar;
private javax.swing.tree.DefaultMutableTreeNode CodeTree;
private javax.swing.tree.DefaultMutableTreeNode CurrentNodePointer;
private StringBuffer CurrentLine;
public codestatemachine2() {
CodeTree = new javax.swing.tree.DefaultMutableTreeNode("Root Of Code Tree");
CurrentNodePointer = CodeTree;
CurrentState = S_INSIDECODEBLOCK;
InitializeStateMachine();
}
public void EvaluateNextChar(String StrCode) {
// Reinitialize codestatemachine
CurrentState = S_INSIDECODEBLOCK;
InitializeStateMachine();
CodeTree = new javax.swing.tree.DefaultMutableTreeNode("Root Of Code Tree");
CurrentNodePointer = CodeTree;
// Iterate Through Each Character in Code
int Codelength = StrCode.length();
for(int i = 0; i < Codelength; i++){
// Get Next Character in Code
CurrentChar = StrCode.charAt(i);
LastEvent = CurrentEvent;
CurrentEvent = IdentifyEvent();
ProcessCurrentEvent();
}
}
private void ProcessCurrentEvent(){
if (CurrentState == S_INSIDECODEBLOCK){
switch (CurrentEvent) {
case E_SEMICOLON:
if (CurrentLine.toString().contains("for")) CurrentLine.append(CurrentChar);
else AddNewLeafChild();
break;
case E_CURLYOPENBRACKET:
AddNewParentChild();
break;
case E_CURLYCLOSEDBRACKET:
GoToParent();
break;
case E_FORWARDSLASH:
if (LastEvent == E_FORWARDSLASH) CurrentState = S_ONCOMMENTLINE;
else if(CurrentLine.length()!=0) CurrentLine.append(' ');
break;
case E_RETURN:
if (LastEvent != E_RETURN && LastEvent != E_SPACE && LastEvent != E_TAB){
if(CurrentLine.length()!= 0 ) CurrentLine.append(' ');
}
break;
case E_STAR:
if (LastEvent == E_FORWARDSLASH) CurrentState = S_INSIDECOMMENTBLOCK;
break;
case E_SPACE:
if (LastEvent != E_RETURN && LastEvent != E_SPACE && LastEvent != E_TAB){
if(CurrentLine.length()!= 0 ) CurrentLine.append(' ');
}
break;
case E_TAB:
if (LastEvent != E_RETURN && LastEvent != E_SPACE && LastEvent != E_TAB){
if(CurrentLine.length()!= 0 ) CurrentLine.append(' ');
}
break;
case E_HASH:
CurrentState = S_PREPROCESSORLINE;
break;
default:
CurrentLine.append(CurrentChar);
}
}else if (CurrentState == S_INSIDECOMMENTBLOCK){
switch (CurrentEvent) {
case E_FORWARDSLASH:
if (LastEvent == E_STAR) CurrentState = S_INSIDECODEBLOCK;
break;
default:
//CurrentLine.append(CurrentChar);
}
}else if (CurrentState == S_ONCOMMENTLINE){
switch (CurrentEvent) {
case E_RETURN:
CurrentState = S_INSIDECODEBLOCK;
InitializeStateMachine();
break;
default:
}
}else if (CurrentState == S_PREPROCESSORLINE){
switch (CurrentEvent) {
case E_RETURN:
CurrentState = S_INSIDECODEBLOCK;
InitializeStateMachine();
break;
default:
}
}
}
public javax.swing.tree.DefaultMutableTreeNode GetCodetree() {
return CodeTree;
}
private int IdentifyEvent() {
int myevent;
switch(CurrentChar){
case '\n' :
myevent = E_RETURN;
break;
case '*' :
myevent = E_STAR;
break;
case '\\' :
myevent = E_BACKWARDSLASH;
break;
case '#' :
myevent = E_HASH;
break;
case ';' :
myevent = E_SEMICOLON;
break;
case ':' :
myevent = E_COLON;
break;
case '{' :
myevent = E_CURLYOPENBRACKET;
break;
case '}' :
myevent = E_CURLYCLOSEDBRACKET;
break;
case '(' :
myevent = E_CURVEDOPENBRACKET;
break;
case ')' :
myevent = E_CURVEDCLOSEDBRACKET;
break;
case '/' :
myevent = E_FORWARDSLASH;
break;
case ' ' :
myevent = E_SPACE;
break;
case '\t':
myevent = E_TAB;
break;
default :
myevent = E_NULL;
}
return myevent;
}
/*
* Initialize all the variables that determine the state of the Line.
* It is called at the begining of processing a line.
*/
private void InitializeStateMachine() {
CurrentLine = new StringBuffer("");
LastEvent = E_NULL;
}
private void AddNewLeafChild() {
javax.swing.tree.DefaultMutableTreeNode treeNode2 = new javax.swing.tree.DefaultMutableTreeNode(CurrentLine.toString());
CurrentNodePointer.add(treeNode2);
InitializeStateMachine();
}
private void AddNewParentChild() {
javax.swing.tree.DefaultMutableTreeNode treeNode2 = new javax.swing.tree.DefaultMutableTreeNode(CurrentLine.toString());
CurrentNodePointer.add(treeNode2);
CurrentNodePointer = treeNode2;
InitializeStateMachine();
}
private void GoToParent() {
if(CurrentLine.length()!= 0 ){
javax.swing.tree.DefaultMutableTreeNode treeNode2 = new javax.swing.tree.DefaultMutableTreeNode(CurrentLine.toString());
CurrentNodePointer.add(treeNode2);
}
CurrentNodePointer = (DefaultMutableTreeNode) CurrentNodePointer.getParent();
InitializeStateMachine();
}
}