Pastable version of Simple interpreter

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 <pre class="sunburst">import java.io.*;
import java.lang.Character;
// import java.util.HashMap;
import javax.swing.*;

public class Cog extends JFrame {

public static String[] defName = new String[1000];
 public static int[] defLine = new int[1000];
 public static int defCount = 0;
 public static String[] varVal = new String[1000];
 public static String[] varName = new String[1000];
 public static int varCount = 0;
 public static int curLine;
 public static String[] strScript;
 public static int globI = 0;

public static void main(String args[]) {

try {
 BufferedReader br = new BufferedReader(
 new InputStreamReader(System.in));

System.out.print(&quot;Which file to open? (Case-sensitive)\n&quot;);
 FileInputStream fr = new FileInputStream(new File(br.readLine()));
 DataInputStream ds = new DataInputStream(new BufferedInputStream(fr));

System.out.println(ds.available());
 String tmp = &quot;&quot;;

for (int i2 = ds.available(); i2 &gt; 0; i2--) {
 if (ds.available() != 0) {
 tmp += ds.readLine() + &quot;\n&quot;;
 }
 }
 strScript = tmp.split(&quot;\n&quot;);
 getDefs();
 if (getDef(&quot;start&quot;) &gt; -1) {
 globI = getDef(&quot;start&quot;);
 System.out.println(&quot;Found start on &quot; + getDef(&quot;start&quot;));
 } else if (getDef(&quot;main&quot;) &gt; -1) {
 globI = getDef(&quot;main&quot;);
 System.out.println(&quot;Found main on &quot; + getDef(&quot;main&quot;));
 } else {
 System.out.println(&quot;Failed to start&quot;);
 }
 for (globI = globI; globI &lt; strScript.length; globI++) {
 try {
 analyzeLine(strScript[globI]);
 curLine++;
 } catch (Exception e2) {
 e2.printStackTrace();
 }
 }
 } catch (IOException e) {
 e.printStackTrace();
 }
 }

public static void analyzeLine(String s) {
 if (!s.startsWith(&quot;#&quot;)) {
 if (s.trim().startsWith(&quot;@&quot;)) {
 String[] tmp = s.split(&quot;=&quot;);

for (int i = 0; i &lt; tmp.length; i++) {
 String[] tmp2 = tmp[i].split(&quot;@&quot;);

if (tmp2.length &gt; 1) {
 if (tmp2[1].equalsIgnoreCase(&quot;author&quot;)) {
 System.out.println(&quot;Written by &quot; + tmp[i + 1]);
 } else if (tmp2[1].equalsIgnoreCase(&quot;name&quot;)) {
 System.out.println(&quot;Script name &quot; + tmp[i + 1]);
 }
 }
 }

/* } else if (s.trim().startsWith(&quot;def&quot;)) {
 String[] tmp = s.split(&quot; &quot;);

 for (int i = 0; i &lt; tmp.length; i++) {
 if (tmp[i].endsWith(&quot;{&quot;)) {
 setDef(left(tmp[i].length() - 1, tmp[i]), curLine);
 }
 }
 */
 } else if (s.trim().startsWith(&quot;goto&quot;)) {
 String tmp = between(s.trim(), &quot;(&quot;, &quot;)&quot;);

globI = getDef(tmp);

} else if (s.trim().startsWith(&quot;var&quot;)) {
 String[] t = s.split(&quot;var&quot;);
 String[] tmp = t[1].split(&quot;;&quot;);

for (int i = 0; i &lt; tmp.length; i++) {
 String[] tmp2 = tmp[i].split(&quot;=&quot;);

for (int i2 = 0; i2 &lt; tmp2.length - 1; i2++) {
 if (tmp2[i2 + 1].contains(&quot;}&quot;)) {
 setVar(tmp2[i2],
 left(tmp2[i2 + 1].length() - 1, tmp2[i2 + 1]));
 } else if (tmp2[i2].contains(&quot;{&quot;)) {
 setVar(right(1, tmp2[i2]), tmp2[i2 + 1]);
 } else {
 setVar(tmp2[i2], tmp2[i2 + 1]);
 }
 }
 }

} else if (s.trim().startsWith(&quot;log&quot;)) {
 // String tmp = right(4, s.trim());
 // String tmp2 = left(tmp.length() - 1, tmp);

System.out.println(between(s.trim(), &quot;(&quot;, &quot;)&quot;));

} else if (s.trim().startsWith(&quot;for&quot;)) {
 String tmp = between(s.trim(), &quot;for(&quot;, &quot;)&quot;);

String[] tmp2 = tmp.split(&quot;=&quot;);
 String[] tmp3 = tmp2[1].split(&quot;:&quot;);
 int intFinish = 0;

for (int i = curLine; i &lt; strScript.length; i++) {
 if (strScript[i].trim().startsWith(&quot;next&quot;)) {
 intFinish = i;
 }
 }
 int iStart = Integer.valueOf(tmp3[0].trim()).intValue();
 int iEnd = Integer.valueOf(tmp3[1].trim()).intValue();
 int tmpi = globI + iEnd;
 int tmp2z = globI + 1;

// JOptionPane.showMessageDialog(null, Integer.toString(globI) + &quot;:&quot; + Integer.toString(intFinish));
 curLine = globI;
 for (int i = iStart; i &lt; iEnd; i++) { // run how many times
 for (int i2 = curLine + 1; i2 &lt; intFinish; i2++) { // what to run
 analyzeLine(strScript[i2]);
 globI++;
 curLine++;
 }
 // JOptionPane.showMessageDialog(null, &quot;i: &quot; + Integer.toString(i));
 curLine = globI - iEnd;
 globI = curLine;
 System.out.println(i);
 }

curLine = globI;
 // curLine = tmp2z;

} else if (s.trim().startsWith(&quot;when&quot;)) {
 String tmp = between(s.trim(), &quot;(&quot;, &quot;)&quot;);

System.out.println(s);
 String[] tmp2 = tmp.split(&quot;;&quot;);

System.out.println(&quot;Going to &quot; + tmp2[1] + &quot; when &quot; + tmp2[0]);

if (tmp.contains(&quot;=&gt;&quot;)) {
 String[] tmp3 = tmp2[0].split(&quot;&gt;=&quot;);

if (Integer.valueOf(getVar(tmp3[0].trim())).intValue()
 &gt;= Integer.valueOf(tmp3[1].trim()).intValue()) {
 globI = getDef(tmp2[1]);
 }
 } else if (tmp.contains(&quot;&lt;=&quot;)) {
 String[] tmp3 = tmp2[0].split(&quot;&lt;=&quot;);

if (Integer.valueOf(getVar(tmp3[0].trim())).intValue()
 &lt;= Integer.valueOf(tmp3[1].trim()).intValue()) {
 globI = getDef(tmp2[1]);
 }
 } else if (tmp.contains(&quot;!=&quot;)) {
 String[] tmp3 = tmp2[0].split(&quot;!=&quot;);

if (Integer.valueOf(getVar(tmp3[0].trim())).intValue()
 != Integer.valueOf(tmp3[1].trim()).intValue()) {
 globI = getDef(tmp2[1]);
 }
 } else if (tmp.contains(&quot;&lt;&quot;)) {
 String[] tmp3 = tmp2[0].split(&quot;&lt;&quot;);

if (Integer.valueOf(getVar(tmp3[0].trim())).intValue()
 &lt; Integer.valueOf(tmp3[1].trim()).intValue()) {
 globI = getDef(tmp2[1]);
 }
 } else if (tmp.contains(&quot;&gt;&quot;)) {
 String[] tmp3 = tmp2[0].split(&quot;&gt;&quot;);

if (Integer.valueOf(getVar(tmp3[0].trim())).intValue()
 &gt; Integer.valueOf(tmp3[1].trim()).intValue()) {
 globI = getDef(tmp2[1]);
 }
 } else if (tmp.contains(&quot;=&quot;)) {
 String[] tmp3 = tmp2[0].split(&quot;=&quot;);
 String tmo = getVar(tmp3[0].trim());

if (tmo.equals(tmp3[1].trim())) {
 globI = getDef(tmp2[1]);
 }
 }

} else if (s.trim().startsWith(&quot;if&quot;)) {
 String tmp = between(s.trim(), &quot;(&quot;, &quot;)&quot;);
 String[] tmp2 = new String[] { tmp};

if (tmp.contains(&quot;&gt;=&quot;)) {
 tmp2 = tmp.split(&quot;&gt;=&quot;);
 } else if (tmp.contains(&quot;&lt;=&quot;)) {
 tmp2 = tmp.split(&quot;&lt;=&quot;);
 } else if (tmp.contains(&quot;!=&quot;)) {
 tmp2 = tmp.split(&quot;!=&quot;);
 if (tmp2[0].trim() != tmp2[1].trim()) {
 System.out.println(
 tmp2[0].trim() + &quot; does not equal &quot;
 + tmp2[1].trim());
 }
 } else if (tmp.contains(&quot;&lt;&quot;)) {
 tmp2 = tmp.split(&quot;&lt;&quot;);
 } else if (tmp.contains(&quot;&gt;&quot;)) {
 tmp2 = tmp.split(&quot;&gt;&quot;);
 } else if (tmp.contains(&quot;=&quot;)) {
 tmp2 = tmp.split(&quot;=&quot;);
 if (tmp2[1].trim().equals(getVar(tmp2[0].trim()))) {
 System.out.println(
 &quot;&quot; + tmp2[0].trim() + &quot; equals &quot;
 + tmp2[1].trim());
 }
 }
 } else {
 for (int i = 0; i &lt; varCount; i++) {
 if (s.trim().startsWith(varName[i])) {
 String tmp = s.trim();
 String[] tmp2;

if (tmp.contains(&quot;+&quot;)) {
 tmp2 = tmp.split(&quot;+&quot;);
 } else if (tmp.contains(&quot;-&quot;)) {
 tmp2 = tmp.split(&quot;-&quot;);
 } else if (tmp.contains(&quot;=&quot;)) {
 tmp2 = tmp.split(&quot;=&quot;);
 System.out.println(
 &quot;Now &quot; + tmp2[0].trim() + &quot; equals &quot;
 + tmp2[1].trim());
 }
 }
 }
 }
 }
 }

public static void setDef(String dName, int dLine) {
 defLine[defCount] = dLine;
 defName[defCount] = dName.trim();
 defCount++;
 }

public static int getDef(String dName) {
 for (int i = 0; i &lt; defCount; i++) {
 if (dName.equals(defName[i])) {
 return defLine[i];
 }
 }
 return -1;
 }

public static void getDefs() {
 for (int i = 0; i &lt; strScript.length; i++) {
 if (strScript[i].trim().startsWith(&quot;def&quot;)) {
 String[] tmp = strScript[i].split(&quot; &quot;);

public static void setVar(String vName, String vVal) {

/* boolean inUse = false;
 for (int i = 0; i &lt; varCount; i++) {
 System.out.println(varName[i]);
 if (varName[i] == vName) {
 inUse = true;
 }
 }
 if (inUse = false) {*/
 varVal[varCount] = vVal.trim();
 varName[varCount] = vName.trim();
 varCount++;

/* } else {
 System.out.println(vName + &quot; is already defined&quot;);
 }*/
 }

public static String getVar(String vName) {
 for (int i = 0; i &lt; varCount; i++) {
 if (vName.equals(varName[i])) {
 return varVal[i];
 }
 }
 return null;
 }

public static String between(String e, String s1, String s2) {
 return mid(e.indexOf(s1) + 1, e.indexOf(s2) - e.indexOf(s1) - 1, e);
 }

public static String mid(int offset, int toread, String s) {
 String tmp = &quot;&quot;;
 char[] ch = s.toCharArray();

for (int i = offset; i &lt; offset + toread; i++) {
 tmp = tmp + ch[i];
 }
 return tmp;
 }

public static String left(int offset, String s) {
 String tmp = &quot;&quot;;
 char[] ch = s.toCharArray();

for (int i = 0; i &lt; offset; i++) {
 tmp = tmp + ch[i];
 }
 return tmp;
 }

public static String right(int offset, String s) {
 String tmp = &quot;&quot;;
 char[] ch = s.toCharArray();

for (int i = offset; i &lt; s.length(); i++) {
 tmp = tmp + ch[i];
 }
 return tmp;
 }
}

[THIS IS THE DEMO SCRIPT YOU SHOULD TEST WITH!]
@name=Demo
@author=PPL

var{Username = PPL;Password = Demo;invFull = true}

def start{
	for(i = 0:2)
		log(LOL)
		log(LOOL)
		log(LOOOL)
	next
}

def main{
	obj_rock = findObject(rockType)
	if(obj_rock != null)
		log(Mining...)
	endif

}

</pre>
 </div>
 </div>

Refactor :my => 'code'

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Pastable version of Simple interpreter