The program works!

all that is needed to do is format the output and turn it in.  I will do
that within a couple of hours.

Driver/input.txt

@@ -1,5 +1,12 @@
-var x, y;
+const m = 1;
+var a, b;
 begin
-y := 3; /* This is a comment */
-x := y + 56;
+   a := 4 + m; /*5*/
+   b := a + 2; /*7*/
+   a := a * b; /*35*/
+   while b < a do
+   begin
+      if odd b then 
+         b := b + 4;
+   end  /*not sure if the while end needs a '.' */
 end.

Driver/parserwithcodegen.c

@@ -32,7 +32,6 @@ int numOfVariables = 0;
 
 //used for the branching in conditionals
 int inConditional = 0;
-int jumpLine = 0;
 
 //counts the amount of lines of assembly that have been written
 int lines = 0;
@@ -121,7 +120,7 @@ int isRelationalOperator(int token)
 symbol getSymbol(char identifier[])
 {
     int i, found = 0;
-    for(i = 0; i < numOfVariables; i++)
+    for(i = 0; i < numOfSymbols; i++)
     {
         if(strcmp(symbol_table[i].name, identifier) == 0)
             return symbol_table[i];
@@ -155,18 +154,6 @@ void FACTOR()
 {
     if(TOKEN == identsym)
     {
-/*
-if getSymbol() == variable
-    possible ERROR(variable has not been initialized)
-    LOD getSymbol().L getSymbol().M
-    printToFile()
-    lines++;
-else if getSymbol() == constant
-    INC 0 1
-    LIT 0 getSymbol().val
-    printToFile()
-    lines += 2;
-*/
         symbol current = getSymbol(IDENTIFIER);
         if(current.kind == 2)
         {
@@ -189,17 +176,9 @@ else if getSymbol() == constant
     }
     else if(TOKEN == numbersym)
     {
-/*
-INC 0 1
-LIT 0 NUMBER
-printToFile()
-lines += 2;
-*/
-        //INC 0 1 -- We don't need this because LIT increases sp by one already
-        //printToFile(1,0,1);
         //LIT 0 NUMBER
         printToFile(1,0,NUMBER);
-        lines += 2;
+        lines++;
 
         GETTOKEN();
     }
@@ -241,12 +220,6 @@ void TERM()
             printToFile(2,0,5);
             lines++;
         }
-    /*
-    OPR 0 4 (for mult)
-    OPR 0 5 (for div)
-    printToFile()
-    lines +=2;
-    */
     }
 }
 
@@ -265,12 +238,6 @@ void EXPRESSION()
         {
             GETTOKEN();
         }
-/*
-if(minussym)
-OPR 0 1
-printToFile()
-lines++;
-*/
     }
     TERM();
     while(TOKEN == plussym || TOKEN == minussym)
@@ -289,12 +256,6 @@ lines++;
             printToFile(2,0,3);
             lines++;
         }
-/*
-OPR 0 2 (for add)
-OPR 0 3 (for sub)
-printToFile()
-lines +=2;
-*/
     }
 }
 
@@ -306,11 +267,7 @@ void CONDITION()
         EXPRESSION();
         //OPR 0 6
         printToFile(2,0,6);
-/*
-OPR 0 6
-printToFile()
-lines ++;
-*/
+        lines++;
     }
     else
     {
@@ -328,12 +285,7 @@ lines ++;
 
         //OPR 0 M
         printToFile(2,0,conditionValue);
-
-/*
-OPR 0 [conditionValue]
-printToFile()
-lines ++;
-*/
+        lines++;
     }
 }
 
@@ -364,11 +316,6 @@ void STATEMENT()
         //STO 0 M
         printToFile(4,current.level,current.addr);
         lines++;
-/*
-STO getSymbol(name).L getSymbol(name).M
-printToFile()
-lines++;
-*/
     }
     //procedure call (not in tiny PL/0)
     else if(TOKEN == callsym)
@@ -434,18 +381,19 @@ lines++;
                 //returns the file to the previous position
                 fsetpos(ifp, &filePos);
                 lines = currentLines;
+                //Lines increment for prinToFile used in for loop
+                //lines++;
             }
-            //the line for the branch is added
-            //lines++;
+            lines++;
 
             GETTOKEN();
             STATEMENT();
         }
-        //Lines increment for prinToFile used in for loop
-        lines++;
+
     }
     else if(TOKEN == whilesym)
     {
+        int jumpBackLine = lines;
         GETTOKEN();
         CONDITION();
 //top of the stack has whether it is true or false
@@ -467,29 +415,25 @@ lines++;
             if(i == 1)
             {
                 inConditional--;
-//make branch here (lines contains the line that you jump to if the condition is not met)
+//make branch here (lines + 1 contains the line that you jump to if the condition is not met)
 //printToFile()
-                //JPC 0 M = lines
-                printToFile(8,0,lines);
+                //JPC 0 M = l
+                printToFile(8,0,lines + 1);
 
                 //returns the file to the previous position
                 fsetpos(ifp, &filePos);
                 lines = currentLines;
+                //Lines increment for the printToFile used in for loop
+                //lines++;
             }
             //the line for the branch is added
-            //lines++;
+            lines++;
 
             GETTOKEN();
             STATEMENT();
-
-//Jump back to condition (currentLines is where you jump to)
-//printToFile()
-//lines++
         }
-        //Lines increment for the printToFile used in for loop
-        lines++;
-        //JMP 0 M = currentLines
-        printToFile(7,0,currentLines);
+        //JMP 0 M = jumpBackLines
+        printToFile(7,0,jumpBackLine);
         lines++;
     }
 }
@@ -571,11 +515,6 @@ void BLOCK()
         }
         GETTOKEN();
     }
-/*
-INC 0 (4 + numOfVariables)
-printToFile()
-lines++
-*/
     //INC O (4+numOfVariables)
     printToFile(6,0,4+numOfVariables);
     lines++;

Driver/pmachine.c

@@ -27,6 +27,11 @@ instruction code[MAX_CODE_LENGTH];
 int stack[MAX_STACK_HEIGHT];
 //Current line of code
 int line = 0;
+//Lexical level array
+int lexi[3];
+
+//Lexi array pointer
+int lexilvl = 0;
 //CPU globals
 int bp = 1;          //base of current AR
 int sp = 0;          //top of stack
@@ -53,6 +58,10 @@ int pmachinemain()
    stack[0] = 0;
    stack[1] = 0;
    stack[2] = 0;
+   lexi[0] = 0;
+    lexi[1] = 0;
+    lexi[2] = 0;
+    lexi[3] = 0;
 
    int count = codeStore();
 
@@ -75,6 +84,9 @@ int pmachinemain()
       fprintf(ofp," \n ");
    }
 
+   fclose(ifp);
+   fclose(ofp);
+
 }
 
 //Fetch Cycle
@@ -120,6 +132,9 @@ void execute(void)
          stack[sp + 4] = pc;                 //return address (RA)
          bp = sp + 1;
          pc = ir->m;
+         //For printing out correct stack
+         lexi[lexilvl] = sp;
+         lexilvl++;
          strcpy(opString,"cal");
          break;
       case 6:        //INC 0 M
@@ -186,6 +201,7 @@ void oprSwitch(int m)
    switch(m)
    {
       case 0:           //RET
+         lexilvl--;
          sp = bp - 1;
          pc = stack[sp + 4];
          bp = stack[sp + 3];
@@ -306,6 +322,7 @@ void printTrace(void)
 {
    int temp;
    int i;
+   int current = 0;
 
    stringSwitch(ir->op);
 
@@ -318,10 +335,13 @@ void printTrace(void)
 
    for(i = 1; i <= sp; i++)
    {
+    if(lexi[current] > 0 && i > lexi[current])
+    {
+      fprintf(ofp,"|");
+      current++;
+    }
       fprintf(ofp,"%d ",stack[i]);
-      if(sp >= 8 && i==6){
-         fprintf(ofp,"| ");
-      }
+
    }
 }
 

Driver/readme.txt

@@ -0,0 +1,5 @@
+//TEAM
+//First team member name: Kevin Duarte
+//Second team member name: Nestor Maysonet
+
+//How to compile and run:

Driver/sometestprograms.txt

@@ -0,0 +1,43 @@
+//Test for while
+
+var a;
+begin
+   while a < 20 do
+   a := a + 1;
+end.
+
+//Test for if
+var a, b;
+begin
+   a := 1;
+   b := 2;
+   if a > 2 then
+      b := a;
+end.
+
+//addition with vars
+
+var a, b;
+begin
+   a := 1;
+   b := 1;
+   a := b + 1; /* a = 2 */
+   a := a + 1; /* a = 3 */
+   b := a + 1; /* b = 4 */
+   a := b + 1; /* a = 5 */
+end.
+
+//something more complicated
+
+const m = 1;
+var a, b;
+begin
+   a := 4 + m; /*5*/
+   b := a + 2; /*6*/
+   a := a * b; /*30*/
+   while b < a do
+   begin
+      if odd b then 
+         b := b + 4;
+   end  /*not sure if the while end needs a '.' */
+end.

pmachine.c

@@ -29,10 +29,7 @@ int stack[MAX_STACK_HEIGHT];
 int line = 0;
 //Lexical level array
 int lexi[3];
-    lexi[0] = 0;
-    lexi[1] = 0;
-    lexi[2] = 0;
-    lexi[3] = 0;
+
 //Lexi array pointer
 int lexilvl = 0;
 //CPU globals
@@ -61,6 +58,10 @@ int main(int argc, char** argv)
    stack[0] = 0;
    stack[1] = 0;
    stack[2] = 0;
+   lexi[0] = 0;
+   lexi[1] = 0;
+   lexi[2] = 0;
+   lexi[3] = 0;
 
    int count = codeStore();
 
@@ -82,7 +83,7 @@ int main(int argc, char** argv)
       printTrace();
       fprintf(ofp," \n ");
    }
-   
+
    fclose(ifp);
    fclose(ofp);