te/Pass2.java at main · akaza8/te · GitHub

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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.Map;

public class Pass2 {

	public static void main(String[] args) {

		try {

			String f = "IC.txt";
			FileReader fw = new FileReader(f);
			BufferedReader IC_file = new BufferedReader(fw);

			String f1 = "SYMTAB.txt";
			FileReader fw1 = new FileReader(f1);
			BufferedReader symtab_file = new BufferedReader(fw1);
			symtab_file.mark(500);

			String f2 = "LITTAB.txt";
			FileReader fw2 = new FileReader(f2);
			BufferedReader littab_file = new BufferedReader(fw2);
			littab_file.mark(500);

			String littab[][]=new String[10][2] ;

			Hashtable<String, String> symtab = new Hashtable<String, String>();
			String str;
			int z=0;
			while ((str = littab_file.readLine()) != null) {

				littab[z][0]=str.split("\t")[0];
				littab[z][1]=str.split("\t")[1];
				z++;
			}
			while ((str = symtab_file.readLine()) != null) {
				symtab.put(str.split("\t")[0], str.split("\t")[1]);
			}

			String f4 = "MACHINE_CODE.txt";
			FileWriter fw4 = new FileWriter(f4);
			BufferedWriter machine_code_file = new BufferedWriter(fw4);

			String sCurrentLine;
			sCurrentLine = IC_file.readLine();
			int locptr=0;
			locptr=Integer.parseInt(sCurrentLine.split("\t")[3]);

			while ((sCurrentLine = IC_file.readLine()) != null) {
				String s0 = sCurrentLine.split("\t")[0];
                                System.out.print("The value of so: "+s0);
				String s1 = sCurrentLine.split("\t")[1];
       				//if((!s0.equals("AD")) && (!s1.equals("02")))
       				machine_code_file.write(locptr+"\t");		//always write the LC


				String s2=" ";
				if (sCurrentLine.split("\t").length>2)
				s2=sCurrentLine.split("\t")[3];

				if (s0.equals("IS")) {
					machine_code_file.write(s1 + "\t");
					if (sCurrentLine.split("\t").length == 5) {

						machine_code_file.write(sCurrentLine.split("\t")[2] + "\t");


						if (sCurrentLine.split("\t")[3].equals("L")) {
							int add = Integer.parseInt(sCurrentLine.split("\t")[4]);

									machine_code_file.write(littab[add-1][1]);

						}


						if (sCurrentLine.split("\t")[3].equals("S")) {
							int add1 = Integer.parseInt(sCurrentLine.split("\t")[4]);
							int i = 1;
							String l1;
							for (Map.Entry m : symtab.entrySet()) {
								if (i == add1) {
									machine_code_file.write((String) m.getValue());
								}
								i++;
							}

						}
					} else {
						machine_code_file.write("0\t000");
					}
				}

				if(s0.equals("DL")&&s1.equals("02")){		//if it is DS stmt

					machine_code_file.write("00\t0\t00"+s2);

				}
				if(s0.equals("AD")&&s1.equals("02"))//if it is "END" stmt
				 {
					String s;
					littab_file.reset();
			        int y=0;
					while((s = littab_file.readLine()) != null) {

					        String x=s.split("\t")[0];
					        String add=" ";
					        for(int i=0;i<z;i++)
					        {
					                if(x.equals(littab[i][0]))
					                {
					                       add=littab[i][1];

					                }
					         }
					        //machine_code_file.write("Addre3ss to the literals: \n");
					        if(y>0)
					        machine_code_file.write(add+"\t");
					        y++;
						machine_code_file.write("00\t0\t00" + s.split("'")[1]+"\n");
					}
				}

				locptr++;
				machine_code_file.write("\n");
			}
			IC_file.close();
			symtab_file.close();
			littab_file.close();

			machine_code_file.close();
		} catch (IOException e) {
			e.printStackTrace();
		}

	}
}