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SyntaxAnalyzer.cs
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SyntaxAnalyzer.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using System.Text;
using System.Linq;
using System.Threading.Tasks;
using System.Collections;
using System.Data;
//using static Compiler_Construction.Program;
using Compiler_Construction;
using System.Windows.Forms;
namespace Compiler_Construction
{
class SyntaxAnalyzer
{
SemanticAnalyzer semantic = new SemanticAnalyzer();
string outputPath = @"C:\Users\Admin\Desktop\CompilerFinal\syntax.txt";
string cat;
string name;
string parent;
List<Token> token = new List<Token>();
static int index = 0;
public SyntaxAnalyzer(List<Token> t)
{
this.token = t;
}
public bool checkRule()
{
if (Start())
{
//Console.WriteLine(token[index].ClassPart);
Console.WriteLine("No syntax Error");
//return true;
if (token[index].ValuePart == "$")
{
Console.WriteLine("No syntax Error");
return true;
}
}
MessageBox.Show($"RETURNING FALSE {token[index].ClassPart} {token[index].Line}");
return false;
}
public bool Start()
{
if (token[index].ClassPart == "class" || token[index].ClassPart == "abstract" || token[index].ClassPart == "final")
{
if (TM2(out cat))
{
if (token[index].ClassPart == "class")
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
name = token[index].ValuePart;
index++;
if (token[index].ClassPart.Equals(":"))
{
index++;
semantic.create_CT();
File.WriteAllText(outputPath, $"{semantic.insert_MT(name, "class", "internal", cat, "none")}");
if (token[index].ClassPart.Equals("\\r"))
{
index++;
if (MAINCLASS())
{
if (token[index].ClassPart.Equals("end"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
//Console.WriteLine(token[index].ClassPart);
if (CLASSES())
{
return true;
}
}
}
}
}
}
}
}
}
}
//if (token[index].ClassPart == "abstract")
//{
// if (TM2(out cat)) // check class type(final,abstract,general)
// {
// if (token[index].ClassPart == "class")
// {
// index++;
// if (token[index].ClassPart.Equals("ID"))
// {
// name = token[index].ValuePart;
// index++;
// if (token[index].ClassPart.Equals(":"))
// {
// index++;
// File.WriteAllText(outputPath, $"{semantic.insert_MT(name, "class", "internal", cat, "none")}");
// if (token[index].ClassPart.Equals("\\r"))
// {
// index++;
// if (MST())
// {
// if (token[index].ClassPart.Equals("end"))
// {
// index++;
// if (token[index].ClassPart.Equals("\\r"))
// {
// index++;
// //Console.WriteLine(token[index].ClassPart);
// if (CLASSES())// check this 1
// {
// return true;
// }
// }
// }
// }
// }
// }
// }
// }
// }
//}
return false;
}
// if (token[index].ClassPart == "class" || token[index].ClassPart == "abstract" || token[index].ClassPart == "final" )
// {
// if (TM2(out cat)) // check class type(final,abstract,general)
// {
// if (token[index].ClassPart == "class")
// {
// index++;
// if (token[index].ClassPart.Equals("ID"))
// {
// name = token[index].ValuePart;
// index++;
// if (token[index].ClassPart.Equals(":"))
// {
// index++;
// File.WriteAllText(outputPath, $"{semantic.insert_MT(name,"class", "internal", cat, "none")}");
// if (token[index].ClassPart.Equals("\\r"))
// {
// index++;
// if (MAINCLASS())
// {
// if (token[index].ClassPart.Equals("end"))
// {
// index++;
// if (token[index].ClassPart.Equals("\\r"))
// {
// index++;
// //Console.WriteLine(token[index].ClassPart);
// if (CLASSES())// check this 1
// {
// return true;
// }
// }
// }
// }
// }
// }
// }
// }
// }
// }
// return false;
//}
public bool MAINCLASS()
{
if (token[index].ClassPart.Equals("public") || token[index].ClassPart.Equals("private") || token[index].ClassPart.Equals("protected") ||
token[index].ClassPart.Equals("abstract") || token[index].ClassPart.Equals("const") || token[index].ClassPart.Equals("final") ||
token[index].ClassPart.Equals("virtual") || token[index].ClassPart.Equals("override") || token[index].ClassPart.Equals("void") ||
token[index].ClassPart.Equals("DT") || token[index].ClassPart.Equals("this") || token[index].ClassPart.Equals("ID") || token[index].ClassPart.Equals("static"))
{
if (MAIN_FN())
{
if (CL_BODY())
{
// Console.WriteLine("MainClass");
return true;
}
}
}
return false;
}
public bool CLASSES()
{
if (token[index].ClassPart.Equals("abstract") || token[index].ClassPart.Equals("final") || token[index].ClassPart.Equals("class"))
{
if (CDEC())
{
if (CLASSES())
return true;
}
}
if (token[index].ValuePart == "$")
return true;
return false;
}
public bool MAIN_FN()
{
if (token[index].ClassPart.Equals("static") || token[index].ClassPart.Equals("public") || token[index].ClassPart.Equals("private") || token[index].ClassPart.Equals("protected"))
{
if (AM())
{
if (token[index].ClassPart.Equals("static"))
{
index++;
if (token[index].ClassPart.Equals("void"))
{
index++;
if (token[index].ClassPart.Equals("Main"))
{
index++;
if (token[index].ClassPart.Equals("("))
{
index++;
if (token[index].ClassPart.Equals(")"))
{
index++;
if (token[index].ClassPart.Equals(":"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
if (MST())
{
if (token[index].ClassPart.Equals("end"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
return true;
}
}
}
}
}
}
}
}
}
}
}
}
return false;
}
public bool ALLDEC2()
{
if (token[index].ClassPart.Equals("abstract"))
{
index++;
if (TYPES())
{
if (FN())
return true;
}
}
if (token[index].ClassPart.Equals("virtual") || token[index].ClassPart.Equals("override") || token[index].ClassPart.Equals("void") ||
token[index].ClassPart.Equals("DT") || token[index].ClassPart.Equals("static") || token[index].ClassPart.Equals("final") ||
token[index].ClassPart.Equals("ID"))
{
if (TM3())
{
Console.WriteLine($"ALLDEC2 TM3 {token[index].ClassPart} {token[index].Line} ******************************************************");
if (ALLDEC3())
{
Console.WriteLine($"Alldec2 2 cond {token[index].ClassPart}");
return true;
}
}
}
if (token[index].ClassPart.Equals("const"))
{
if (CONST_DEC())
return true;
}
return false;
}
public bool ALLDEC3()
{
Console.WriteLine($"ALLDEC3 {token[index].ClassPart}");
if (token[index].ClassPart.Equals("virtual") || token[index].ClassPart.Equals("override"))
{
if (FN_MOD())
{
if (CONST_DEC())
return true;
}
}
if (token[index].ClassPart.Equals("void") || token[index].ClassPart.Equals("DT") || token[index].ClassPart.Equals("ID"))
{
Console.WriteLine("AllDec3 condition2");
if (ALLDEC4())
{
return true;
}
}
return false;
}
public bool ALLDEC4()
{
Console.WriteLine($"ALLDEC4 {token[index].Line}");
if (token[index].ClassPart.Equals("void") || token[index].ClassPart == "print" || token[index].ClassPart.Equals("override") || token[index].ClassPart.Equals("virtual"))
{
index++;
if (FN())
return true;
}
if (token[index].ClassPart.Equals("DT"))
{
Console.WriteLine($"ALLDEC4 {token[index].Line} DT DT DT DT");
index++;
Console.WriteLine($"ALLDEC4 {token[index].Line} {token[index].ClassPart}");
if (ALLDEC5())
return true;
}
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (ALLDEC7())
{
return true;
}
}
return false;
}
public bool ALLDEC5()
{
Console.WriteLine("ALLDEC5)");
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (ALLDEC6())
return true;
}
if (token[index].ClassPart.Equals("["))
{
if (ARR_DEC())
return true;
}
return false;
}
public bool ALLDEC6()
{
Console.WriteLine($"ALLDEC6) {token[index].ClassPart} {token[index].Line}");
if (token[index].ClassPart.Equals("("))
{
Console.WriteLine($"FN_DEC {token[index].ClassPart} {token[index].Line}*********************************************** ");
if (FN_DEC())
{
Console.WriteLine($"FN_DEC RETURNING TRUE {token[index].ClassPart} {token[index].Line}*********************************************** ");
return true;
}
}
if (token[index].ClassPart.Equals("=") || token[index].ClassPart.Equals("\\r") || token[index].ClassPart.Equals(","))
{
if (DEC())
return true;
}
return false;
}
public bool ALLDEC7()
{
int backtracking = index;
Console.WriteLine("INSIDE AL");
if (token[index].ClassPart.Equals("["))
{
Console.WriteLine("BEFORE ARR_DEC FROM ALL-DEC7");
if (ARR_DEC())
{
return true;
}
else
{
index = backtracking;
if (X())
{
Console.WriteLine("BEFORE ALLDEC8 FROM ALLDEC7");
if (ALLDEC8())
return true;
}
}
}
else if (token[index].ClassPart.Equals("ID") || token[index].ClassPart == "=" || token[index].ClassPart == "," || token[index].ClassPart == "\\r")
{
if (OBJ_CALL())
{
return true;
}
else
{
index = backtracking;
if (X())
{
if (ALLDEC8())
return true;
}
}
}
else
{
index = backtracking;
Console.WriteLine("CO BEFORE X FROM ALLDEC7");
if (X())
{
if (ALLDEC8())
return true;
}
}
return false;
}
//public bool ALLDEC7()
//{
// int backtracking = index;
// if (token[index].ClassPart.Equals("["))
// {
// if (ARR_DEC())
// return true;
// }
// if (token[index].ClassPart.Equals("("))
// {
// if (OBJ_CALL())
// return true;
// }
// else
// {
// index = backtracking;
// if (X())
// {
// if (ALLDEC8())
// return true;
// }
// }
// return false;
//}
public bool ALLDEC8()
{
if (token[index].ClassPart.Equals("("))
{
index++;
if (PL_PR())
{
if (token[index].ClassPart.Equals(")"))
{
index++;
return true;
}
}
}
if (token[index].ClassPart.Equals("=") || token[index].ClassPart.Equals("CO"))
{
if (ASGN_ST())
{
return true;
}
}
if (token[index].ClassPart.Equals("inc_dec"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
return true;
}
}
return false;
}
public bool TYPES()
{
if (token[index].ClassPart.Equals("void") || token[index].ClassPart.Equals("DT"))
{
index++;
return true;
}
return false;
}
public bool CDEC()
{
if (token[index].ClassPart.Equals("abstract") || token[index].ClassPart.Equals("final") || token[index].ClassPart.Equals("class"))
{
if (TM2(out cat))
{
if (token[index].ClassPart.Equals("class"))
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
name = token[index].ValuePart;
index++;
//if (token[index].ClassPart.Equals(":"))
//{
if (INHERIT(out parent))
{
//Console.WriteLine($"Inherit Passes {token[index].ValuePart}");
semantic.create_CT();
semantic.insert_MT(name,"class", "internal", cat, parent);
if (token[index].ClassPart.Equals(":"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
if (CL_BODY())
{
if (token[index].ClassPart.Equals("end"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
return true;
}
}
}
}
}
}
//}
}
}
}
}
return false;
}
public bool CTOR()
{
Console.WriteLine($"Ctor { token[index].ValuePart}");
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (token[index].ClassPart.Equals("("))
{
index++;
if (PL())
{
if (token[index].ClassPart.Equals(")"))
{
index++;
if (token[index].ClassPart.Equals(":"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
if (MST())
{
if (token[index].ClassPart.Equals("end"))
{
index++;
if (token[index].ClassPart.Equals("\\r"))
{
index++;
return true;
}
}
}
}
}
}
}
}
}
return false;
}
public bool INHERIT(out string parent)
{
//Console.WriteLine($"inherit func {token[index].ClassPart}");
if (token[index].ClassPart.Equals("inherit"))
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
parent = token[index].ValuePart;
index++;
return true;
//if (token[index].ClassPart.Equals(":"))
//{
//index++;
// if (token[index].ClassPart.Equals("\\r"))
// {
// index++;
// return true;
// }
//}
}
}
if (token[index].ClassPart.Equals(":"))
{
parent = "none";
return true;
}
parent = "none";
return false;
}
public bool CL_BODY()
{
if (token[index].ClassPart.Equals("abstract") || token[index].ClassPart.Equals("const") || token[index].ClassPart.Equals("static") || token[index].ClassPart.Equals("final") ||
token[index].ClassPart.Equals("virtual") || token[index].ClassPart.Equals("override") || token[index].ClassPart.Equals("void") || token[index].ClassPart.Equals("DT") ||
token[index].ClassPart.Equals("ID") || token[index].ClassPart.Equals("public") || token[index].ClassPart.Equals("private") || token[index].ClassPart.Equals("protected"))
{
Console.WriteLine($"inside CLBODY {token[index].ClassPart}");
if (AM())
{
Console.WriteLine($"clbody AM crosss {token[index].ClassPart}");
if (CL_BODY1())
{
return true;
}
}
}
if (token[index].ClassPart.Equals("end"))
{
Console.WriteLine("CLBODY");
return true;
}
return false;
}
public bool CL_BODY1()
{
Console.WriteLine($"inside CLBODY1 {token[index].ClassPart}");
int backTrackingIndex = index;
if (token[index].ClassPart.Equals("abstract") || token[index].ClassPart.Equals("const") || token[index].ClassPart.Equals("static") || token[index].ClassPart.Equals("final") ||
token[index].ClassPart.Equals("virtual") || token[index].ClassPart.Equals("override") || token[index].ClassPart.Equals("void") || token[index].ClassPart.Equals("DT")
|| token[index].ClassPart.Equals("ID"))
{
Console.WriteLine($"inside CLBODY1 cond1 {token[index].ClassPart} {token[index].Line}");
if (ALLDEC2())
{
Console.WriteLine($"CL_BODY1 AFTER ALLDEC2 {token[index].Line}");
if (CL_BODY())
return true;
}
else
{
index = backTrackingIndex;
if (CTOR())
{
Console.WriteLine($"inside CLBODY1 ifnotCtor {token[index].ClassPart}");
if (CL_BODY())
return true;
}
}
}
if (token[index].ClassPart.Equals("ID"))
{
index = backTrackingIndex;
if (CTOR())
{
Console.WriteLine($"inside CLBODY1 ifnotCtor {token[index].ClassPart}");
if (CL_BODY())
return true;
}
}
return false;
}
public bool PL()
{
if (token[index].ClassPart.Equals("DT"))
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (LIST())
return true;
}
}
if (token[index].ClassPart.Equals(")"))
{
return true;
}
return false;
}
public bool LIST()
{
if (token[index].ClassPart.Equals(","))
{
index++;
if (PL0())
return true;
}
else if (token[index].ClassPart.Equals(")"))
{
return true;
}
return false;
}
public bool PL0()
{
if (token[index].ClassPart == "DT")
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (LIST())
return true;
}
}
return false;
}
public bool OBJ_CALL()
{
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (OBJ_DEC1())
return true;
}
else if (token[index].ClassPart.Equals("=") || token[index].ClassPart.Equals("\\r") || token[index].ClassPart.Equals(","))
{
if (OBJ_DEC1())
return true;
}
return false;
}
public bool OBJ_DEC1()
{
if (token[index].ClassPart.Equals("="))
{
index++;
if (token[index].ClassPart.Equals("new"))
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (token[index].ClassPart.Equals("("))
{
index++;
if (PL_PR())
{
if (token[index].ClassPart.Equals(")"))
{
index++;
if (L2())
return true;
}
}
}
}
}
}
if (token[index].ClassPart.Equals(",") || token[index].ClassPart.Equals("\\r"))
{
if (L2())
return true;
}
if (token[index].ClassPart.Equals("\\r"))
{
index++;
return true;
}
return false;
}
public bool L2()
{
if (token[index].ClassPart.Equals(","))
{
index++;
if (token[index].ClassPart.Equals("ID"))
{
index++;
if (OBJ_DEC1())
return true;
}
}
if (token[index].ClassPart.Equals("\\r"))
{
index++;
return true;
}
return false;
}
public bool PL_PR()
{
if (token[index].ClassPart.Equals("ID") || token[index].ClassPart.Equals("this") || token[index].ClassPart.Equals("int-const") ||
token[index].ClassPart.Equals("char-const") || token[index].ClassPart.Equals("bool-const") || token[index].ClassPart.Equals("string-const") ||
token[index].ClassPart.Equals("float-const") || token[index].ClassPart.Equals("(") || token[index].ClassPart.Equals("!") ||
token[index].ClassPart.Equals("new") || token[index].ClassPart.Equals("inc_dec"))
{
if (OE())
{
if (PL2())
return true;
}
}
if (token[index].ClassPart.Equals(")"))
{
return true;
}
return false;
}
public bool PL2()
{
if (token[index].ClassPart.Equals(","))
{
index++;
if (OE())
{
if (PL2())
return true;
}
}
else if (token[index].ClassPart.Equals(")"))
{
return true;
}
return false;
}
public bool OE()
{
if (token[index].ClassPart.Equals("ID") || token[index].ClassPart.Equals("this") || token[index].ClassPart.Equals("(") || token[index].ClassPart.Equals("!") ||
token[index].ClassPart.Equals("new") || token[index].ClassPart.Equals("inc_dec") || token[index].ClassPart.Equals("int-const") || token[index].ClassPart.Equals("char-const")
|| token[index].ClassPart.Equals("bool-const") || token[index].ClassPart.Equals("string-const") || token[index].ClassPart.Equals("float-const"))
{
if (AE())
{
if (OE1())
return true;
}
}
return false;
}
public bool OE1()
{
if (token[index].ClassPart.Equals("OR"))
{
index++;
if (AE())
{
if (OE1())
return true;
}
}
if (token[index].ClassPart.Equals(",") || token[index].ClassPart.Equals(")") || token[index].ClassPart.Equals("\\r")
|| token[index].ClassPart.Equals("]") || token[index].ClassPart.Equals("}") || token[index].ClassPart.Equals("=") || token[index].ClassPart.Equals(":"))
{
Console.WriteLine($"OE1 NULL {token[index].ClassPart}");
return true;
}
return false;
}
public bool AE()
{
if (token[index].ClassPart.Equals("ID") || token[index].ClassPart.Equals("this") || token[index].ClassPart.Equals("(") || token[index].ClassPart.Equals("!") ||
token[index].ClassPart.Equals("new") || token[index].ClassPart.Equals("inc_dec") || token[index].ClassPart.Equals("int-const") || token[index].ClassPart.Equals("char-const")
|| token[index].ClassPart.Equals("bool-const") || token[index].ClassPart.Equals("string-const") || token[index].ClassPart.Equals("float-const"))
{
if (RE())
{
if (AE1())
return true;
}
}
return false;
}
public bool AE1()
{
if (token[index].ClassPart.Equals("AND"))
{
index++;
if (RE())
{
if (AE1())
return true;
}
}
if (token[index].ClassPart.Equals("OR") || token[index].ClassPart.Equals(")") || token[index].ClassPart.Equals("\\r") || token[index].ClassPart.Equals(",")
|| token[index].ClassPart.Equals("]") || token[index].ClassPart.Equals("}") || token[index].ClassPart.Equals("=") || token[index].ClassPart.Equals(":"))
{
Console.WriteLine($"AE1 NULL {token[index].ClassPart}");
return true;
}
return false;
}
public bool RE()
{
if (token[index].ClassPart.Equals("ID") || token[index].ClassPart.Equals("this") || token[index].ClassPart.Equals("(") || token[index].ClassPart.Equals("!") ||