public static void Main()
{
string FileName = @"../../a.txt";
try
{
string Text = File.ReadAllText(FileName);
Scanner scanner = new Scanner();
scanner.SetSource(Text, 0);
Parser parser = new Parser(scanner);
var b = parser.Parse();
if (!b)
{
Console.WriteLine("Error");
}
else
{
Console.WriteLine("Syntax tree built");
var fillParents = new FillParentsVisitor();
parser.root.Visit(fillParents);
var pp = new PrettyPrintVisitor();
parser.root.Visit(pp);
Console.WriteLine(pp.Text);
ASTOptimizer.Optimize(parser);
Console.WriteLine("\n\nAfter AST optimizations");
pp = new PrettyPrintVisitor();
parser.root.Visit(pp);
Console.WriteLine(pp.Text);
Console.WriteLine("\n\nThree address code");
var threeAddrCodeVisitor = new ThreeAddrGenVisitor();
parser.root.Visit(threeAddrCodeVisitor);
var threeAddressCode = threeAddrCodeVisitor.Instructions;
foreach (var instruction in threeAddressCode)
{
Console.WriteLine(instruction);
}
var optimizer = new ThreeAddressCodeOptimizer();
var optResult = optimizer.Run(threeAddressCode);
Console.WriteLine("\n\nOptimized three address code");
foreach (var instruction in optResult)
{
Console.WriteLine(instruction);
}
}
}
catch (FileNotFoundException)
{
Console.WriteLine("File {0} not found", FileName);
}
catch (LexException e)
{
Console.WriteLine("Lex Error. " + e.Message);
}
catch (SyntaxException e)
{
Console.WriteLine("Syntax Error. " + e.Message);
}
Console.ReadLine();
}
