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pass2.java
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pass2.java
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import java.io.*;
import java.util.*;
import java.lang.*;
class pass2
{
static int lc=0,mnti=0,mdti=0,i,j,li=0,alai=0,alac=0,alasi=0,prgi=0;
static String[] mdt = new String[200];
static String[] mnt = new String[100];
static String[] ala = new String[100];
static int[] mntin = new int[100];
static int[] alain = new int[100];
static int[][] alas = new int[100][3];
static String[] prgstat = new String[200];
public static int ifmacro(String name)
{
for(i=0;i<mnti;i++)
{
if(name.equals(mnt[i])) return i;
}
return -1;
}
public static void macroexp(int mi)
{
try
{
BufferedReader r;
int ai=0,al=0;
r = new BufferedReader(new FileReader("macro_definition_table.txt"));
String line = r.readLine();
String[] words = line.split("\\s+");
while(true)
{
if(Integer.parseInt(words[0]) == mntin[mi]) break;
line = r.readLine();
words = line.split("\\s+");
}
//System.out.println(words[1]);
for(i=0;i<alasi;i++)
{
if(alas[i][1]==mi)
{
ai = alas[i][0];
al = alas[i][2];
}
}
while(!words[1].equals("MEND"))
{
if(ifmacro(words[1])!=-1)
{
line = r.readLine();
words = line.split("\\s+");
continue;
}
else
{
for(i=ai;i<ai+al;i++)
{
//System.out.println("#"+Integer.toString(alain[i]));
if(words[2].contains("#"+Integer.toString(alain[i]))==true) words[2] = words[2].replace("#"+Integer.toString(alain[i]),ala[i]);
}
String content = words[1]+" "+words[2];
prgstat[prgi] = content;
prgi++;
}
line = r.readLine();
words = line.split("\\s+");
}
}
catch (IOException e) { e.printStackTrace(); }
}
public static void main(String []args)
{
BufferedReader reader;
try
{
reader = new BufferedReader(new FileReader("macro_name_table.txt"));
String line = reader.readLine();
while(line!=null)
{
String[] words = line.split("\\s+");
mnt[mnti] = words[1];
mntin[mnti]= Integer.parseInt(words[2]);
mnti++;
line = reader.readLine();
}
//for(i=0;i<mnti;i++) System.out.println(mnt[i]+" "+mntin[i]);
reader = new BufferedReader(new FileReader("macro_definition_table.txt"));
line = reader.readLine();
while(line!=null)
{
String[] words = line.split("\\s+");
mdt[mdti] = words[1];
mdti++;
line = reader.readLine();
}
//for(i=0;i<mdti;i++) System.out.println(i+" "+mdt[i]);
reader = new BufferedReader(new FileReader("argument_list_array_pass_1.txt"));
line = reader.readLine();
while(line!=null)
{
String[] words = line.split("\\s+");
alain[alai] = Integer.parseInt(words[1]);
ala[alai] = words[2];
alai++;
line = reader.readLine();
}
reader = new BufferedReader(new FileReader("alas.txt"));
line = reader.readLine();
while(line!=null)
{
String[] words = line.split("\\s+");
alas[alasi][0] = Integer.parseInt(words[0]);
alas[alasi][1] = Integer.parseInt(words[1]);
alas[alasi][2] = Integer.parseInt(words[2]);
alasi++;
line = reader.readLine();
}
//for(i=0;i<alai;i++) System.out.println(alain[i]+" "+ala[i]);
}
catch (IOException e) { e.printStackTrace(); }
try
{
reader = new BufferedReader(new FileReader("prg_intermidiate.txt"));
String line = reader.readLine();
String[] words = line.split("\\s+");
while (!line.trim().equals("END"))
{
int ai=0;
int macval = ifmacro(words[0]);
//System.out.println(words[0]+" "+macval);
if(macval!=-1)
{
//System.out.println(macval);
String[] op = words[1].split(",");
for(i=0;i<alasi;i++)
{
if(alas[i][1]==macval)
{
ai = alas[i][0];
}
}
for(i=ai;i<ai+op.length;i++)
{
ala[i]=op[i-ai];
//System.out.println(ala[i]);
}
macroexp(macval);
}
else
{
prgstat[prgi] = line;
prgi++;
}
line = reader.readLine();
words = line.split("\\s+");
}
//for(i=0;i<prgi;i++) System.out.println(i+" "+prgstat[i]);
reader.close();
}
catch (IOException e) { e.printStackTrace(); }
try(OutputStream fw = new FileOutputStream("prg_expanded.txt"))
{
for(i=0;i<prgi;i++)
{
// program statement
String content =prgstat[i]+System.getProperty("line.separator");
fw.write(content.getBytes(),0,content.length());
}
}
catch (IOException e) { e.printStackTrace(); }
try(OutputStream fw = new FileOutputStream("argument_list_array_pass_2.txt"))
{
for(i=0;i<alai;i++)
{
// SR NO argument index in mdt argument name(Replaced with actual arguments)
String content = i+" "+alain[i]+" "+ala[i]+System.getProperty("line.separator");
fw.write(content.getBytes(),0,content.length());
}
}
catch (IOException e) { e.printStackTrace(); }
System.out.println("Check file argument_list_array_pass_2.txt");
System.out.println("Check file prg_expanded.txt");
}
}