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Form1.cs
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Form1.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using System.Text.RegularExpressions;
using System.Collections;
using System.Diagnostics;
namespace Compiler_Construction
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button_file_Click(object sender, EventArgs e)
{
OpenFileDialog theDialog = new OpenFileDialog();
theDialog.Title = "Open Input Text File";
theDialog.Filter = "TXT files|*.txt";
theDialog.InitialDirectory = @"D:\TestingFiles";
if (theDialog.ShowDialog() == DialogResult.OK)
{
textBox_inputfile.Text=theDialog.FileName.ToString();
}
}
private void button_syntax_Click(object sender, EventArgs e)
{
string path = textBox_inputfile.Text;
List<Token> alToken = getAllTokens(path);
alToken.Add(new Token("$", -1));
SyntaxAnalyzer syntaxAnalObj = new SyntaxAnalyzer(alToken);
SemanticAnalyzer semanticAnalyzer = new SemanticAnalyzer();
semanticAnalyzer.print_CT();
string allTokens = "";
foreach (var t in alToken)
{
allTokens += $"({t.ClassPart},{t.ValuePart},{t.Line})\n";
}
bool syntaxresult = syntaxAnalObj.checkRule();
string aa = syntaxresult.ToString();
MessageBox.Show($"Check Syntax: {syntaxresult}");
}
private void button_laxical_Click(object sender, EventArgs e)
{
string path = textBox_inputfile.Text;
string[,] token = new string[100, 2];
List<Token> alToken = getAllTokens(path);
string allTokens = "";
foreach (var t in alToken)
{
allTokens += $"({t.ClassPart},{t.ValuePart},{t.Line})\n";
}
string outputPath = @"C:\Users\Admin\Desktop\token.txt";
File.WriteAllText(outputPath, allTokens);
Process.Start(outputPath);
}
static List<Token> getAllTokens(string a)
{
List<Token> alToken = new List<Token>();
string temp = "";
bool multiLineComment = false;
int no = 0;
string[] text = File.ReadAllLines(a);
for (int i = 0; i < text.Length; i++)
{
string str = text[i];
//Console.WriteLine($"line= {str} length={str.Length}");
for (int j = 0; j < str.Length; j++)
{
//FOR STRING
if (str[j] == '\"' && multiLineComment != true)
{
temp += str[j];
while (j + 1 < str.Length && str[j + 1] != '\"')
{
if (str[j + 1] == '\\' && j + 2 < str.Length && (str[j + 2] == '\"'))
{
temp += str[j + 1].ToString() + str[j + 2].ToString();
j += 2;
}
else
{
j++;
temp += str[j];
}
if (j == str.Length - 1)
break;
}
if (j + 1 < str.Length && str[j + 1] == '\"')
temp += '\"';
j++;
//Console.WriteLine($"temp={temp}");
alToken.Add(new Token(temp, i));
no++;
temp = "";
}
//FOR CHAR
else if (str[j].Equals('\'') && multiLineComment != true)
{
//Console.WriteLine($"char start");
temp += str[j];
if (str[j + 1].Equals('\\'))
{
for (int k = 0; k < 3; k++)
{
if (j + 1 < str.Length)
{
j++;
temp += str[j].ToString();
}
}
}
else
{
for (int k = 0; k < 2; k++)
{
if (j + 1 < str.Length)
{
j++;
temp += str[j].ToString();
}
}
}
//Console.WriteLine($"temp={temp}");
alToken.Add(new Token(temp, i));
no++;
temp = "";
}
//FOR IDENTIFIER
else if (Char.IsLetter(str[j]) && multiLineComment != true)
{
//Console.WriteLine($"word HERE3 {str[j]}");
do
{
temp += str[j];
j++;
if (j == str.Length)
{
break;
}
} while (Char.IsLetter(str[j]) || Char.IsDigit(str[j]) || str[j] == '_' && str[j] != ' ');
// Console.WriteLine($"temp={temp}");
alToken.Add(new Token(temp, i));
j--;
no++;
temp = "";
}
// FOR DIGITS
else if (multiLineComment != true && j < str.Length && (((str[j] == '+' || str[j] == '-') && (Char.IsDigit(str[j + 1]) || (str[j + 1] == '.' && Char.IsDigit(str[j + 2])))) || (str[j] == '.' && Char.IsDigit(str[j + 1])) || Char.IsDigit(str[j])))
{
//bool valid = true;
//Console.WriteLine($"digit HERE3 {str[j]}");
do
{
if (str[j] == '.' && temp.Contains('.'))
break;
if (str[j] == '+' && temp.Contains('+'))
break;
if (str[j] == '-' && temp.Contains('-'))
break;
if (str[j] == 'e' && temp.Contains('e'))
break;
temp += str[j];
j++;
if (j == str.Length)
break;
} while (Char.IsDigit(str[j]) || str[j] == '.' || str[j] == 'e' || str[j] == '+' || str[j] == '-' || (!Char.IsWhiteSpace(str[j]) && Char.IsLetter(str[j])));
//Console.WriteLine($"temp={temp}");
alToken.Add(new Token(temp, i));
j--;
temp = "";
no++;
}
//FOR OPERATORS
else if (multiLineComment != true && j < str.Length && (str[j] == '+' || str[j] == '-' || str[j] == '*' || str[j] == '/' || str[j] == '%' || str[j] == '=' || str[j] == '<' || str[j] == '>' || str[j] == '^' || str[j] == '!' || str[j] == '&' || str[j] == '|')) // +-*/=%
{
//Console.WriteLine($"operator here4 {str[j]}");
temp += str[j];
if (j < str.Length - 1 && ((str[j] == '+' && str[j + 1] == '+') || (str[j] == '-' && str[j + 1] == '-') || (str[j] == '|' && str[j + 1] == '|') || (str[j] == '&' && str[j + 1] == '&'))) //++ -- && ||
temp += str[++j];
else if (j < str.Length - 1 && ((str[j] == '|' && str[j + 1] == '=') || (str[j] == '&' && str[j + 1] == '=')))
temp += "";
else if (j < str.Length - 1 && str[j + 1] == '=') // += -= *= /= == %=
temp += str[++j];
//Console.WriteLine($"temp={temp}");
alToken.Add(new Token(temp, i));
no++;
temp = "";
}
//FOR PUNCTUATOR
else if ((Char.IsPunctuation(str[j]) && str[j] != ':' && str[j] != '#' && multiLineComment != true) || (multiLineComment != true && (str[j] == '`' || str[j] == '_' || str[j] == '~' || str[j] == '@' || str[j] == '\\' || str[j] == '$')))
{
//Console.WriteLine($"punctuator Here => {str[j]}");
alToken.Add(new Token(str[j].ToString(), i));
no++;
}
//For inheritance symbol
else if (multiLineComment != true && j < str.Length && str[j] == ':')
{
Console.WriteLine($":Here j={j}");
if (j < str.Length - 1 && str[j + 1] == ':')
{
temp += str[j].ToString() + str[j + 1].ToString();
// Console.WriteLine($"temp={temp}");
alToken.Add(new Token(temp, i));
temp = "";
j++;
}
else
{
//Console.WriteLine($"temp={temp}");
alToken.Add(new Token(str[j].ToString(), i));
}
}
//FOR SINGLE COMMENT
else if (str[j].Equals('#') && str[j + 1] != '#' && multiLineComment != true)
{
//Console.WriteLine("single comment");
do
{
j++;
} while (j != str.Length);
}
//FOR MULTI LINE COMMENT
else if (str[j].Equals('#') && str[j + 1].Equals('#') || multiLineComment)
{
//Console.WriteLine($"comment here, multiline = {multiLineComment}");
if (multiLineComment)
{
if (j != str.Length - 1 && str[j] != '#' && str[j + 1] != '#')
{
do
{
j++;
if (j == str.Length - 1)
{
multiLineComment = true;
break;
}
} while (str[j] != '#' && str[j + 1] != '#' && j != str.Length - 1);
j++;
if (j != str.Length && str[j].Equals('#') && str[j + 1].Equals('#'))
{
//Console.WriteLine($"outside while j= {j}");
j++;
if (multiLineComment)
multiLineComment = false;
}
}
else
{
if (str[j] == '#' && str[j + 1] == '#')
multiLineComment = false;
j++;
}
}
else
{
j++;
do
{
j++;
if (j == str.Length - 1)
{
multiLineComment = true;
break;
}
} while (str[j] != '#' && str[j + 1] != '#' && j != str.Length - 1);
j++;
if (j != str.Length && str[j].Equals('#') && str[j + 1].Equals('#'))
{
j++;
if (multiLineComment)
multiLineComment = false;
}
}
}
}
alToken.Add(new Token("\\r", i));
}
return alToken;
}
private void button_semantic_Click(object sender, EventArgs e)
{
string outputPath = @"C:\Users\Admin\Desktop\CompilerFinal\maintable.txt";
Process.Start(outputPath);
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
private void label2_Click(object sender, EventArgs e)
{
}
}
class Token
{
string valuePart;
string classPart;
int line;
public Token(string ValuePart, int Line)
{
valuePart = ValuePart;
line = Line+1;
classPart = identifyClass(ValuePart);
}
public string ClassPart { get { return classPart; } set { classPart = value; } }
public string ValuePart { get { return valuePart; } set { valuePart = value; } }
public int Line { get { return line; } set { line = value; } }
string identifyClass(string value)
{
Regex idrgx = new Regex(@"^[a-zA-Z][\w]*$");
Regex charrgx = new Regex(@"^'.{1}'$|^'\\.{1}'$");
Regex digrgx = new Regex(@"(^[+-]?\d+)(?:[eE]([-+]?\d+))?$");
Regex floatrgx = new Regex(@"^([+-]?\d*[.]{1}\d+)(?:[eE]([-+]?\d+))?$");
Regex strrgx = new Regex(@"^[""](\W|\w)*[""]$");
Regex boolrgx = new Regex(@"^true$|^false$");
string[,] keywords = new string[,] { {"int","DT"}, { "double", "DT" }, { "char", "DT" }, { "float", "DT" }, { "bool", "DT" },{ "string", "DT" },{"foreach", "foreach"},{"while","while"},{"return","return"},{"label","label"},
{"var","var"},{"goto","goto"},{"switch","switch"},{"case","case"},{"default","default"},{"break","break"},{"continue","continue"},{"new","new"},{"void","void"},{"print","print"},
{"end","end"},{"if","if"},{"else","else"},{"private","private"},{"public","public"},{"protected","protected"},{"class","class"},{"Main","Main"},{"abstract","abstract"},
{"final","final"},{"static","static"},{"null","null"},{"virtual","virtual"},{"override","override"},{"this","this"},{"in","in"},{"const","const"},{"interface","interface"},{"extends","extends"} };
string[,] operators = new string[,] { {"+","PM"}, {"-","PM"}, {"*","MDM"}, {"/","MDM"}, {"%","MDM"}, {"&&","AND"}, {"||","OR"}, {"!","!"}, {"<","RO"}, {">","RO"}, {"<=","RO"}, {">=","RO"}, {"!=","RO"}, {"==","RO"},
{"++","inc_dec"},{"--","inc_dec"},{"+=","CO"},{"-=","CO"},{"*=","CO"},{"/=","CO"},{"=","="}};
string[,] punctuators = new string[,] { { "\"", "\"" }, { "'", "'" }, { "(", "(" }, { ")", ")" }, { "{", "{" }, { "}", "}" }, { "[", "[" }, { "]", "]" }, { ",", "," }, { ".", "." }, { ":", ":" }, { ";", ";" }, { "?", "?" }, { "::", "inherit" }, { "\\r", "\\r" } };
if (Char.IsLetter(value[0]))
{
if (boolrgx.IsMatch(value))
return "bool-const";
else if (idrgx.IsMatch(value))
{
for (int i = 0; i < keywords.Length / 2; i++)
{
if (value == keywords[i, 0])
return keywords[i, 1];
}
return "ID";
}
}
else if (charrgx.IsMatch(value))
return "char-const";
else if (strrgx.IsMatch(value))
return "string-const";
else if (digrgx.IsMatch(value))
return "int-const";
else if (floatrgx.IsMatch(value))
return "float-const";
for (int i = 0; i < operators.Length / 2; i++)
{
if (value == operators[i, 0])
return operators[i, 1];
}
for (int i = 0; i < punctuators.Length / 2; i++)
{
if (value == punctuators[i, 0])
return punctuators[i, 1];
}
return "ERROR";
}
}
}