internal static string GetASTWithOpt(Parser parser, List <int> lstCheck)
{
var b = parser.Parse();
if (!b)
{
return("Error. AST not build");
}
var fillParents = new FillParentsVisitor();
parser.root.Visit(fillParents);
var listOpt = new List <ChangeVisitor>();
if (lstCheck.Count > 0)
{
foreach (var n in lstCheck)
{
listOpt.Add(ASTOptimizations[n]);
}
ASTOptimizer.Optimize(parser, listOpt);
}
var pp = new PrettyPrintVisitor();
parser.root.Visit(pp);
return(pp.Text);
}
private string[] ApplyOptimizations(Parser AST, List <ChangeVisitor> Optimizations = null)
{
ASTOptimizer.Optimize(AST, Optimizations);
var pp = new PrettyPrintVisitor();
AST.root.Visit(pp);
return(pp.Text.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries));
}
public static void Main()
{
var FileName = @"../../../a.txt";
try
{
var Text = File.ReadAllText(FileName);
var scanner = new Scanner();
scanner.SetSource(Text, 0);
var 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);
}
Console.WriteLine("\n\nOptimized three address code");
var optResult = ThreeAddressCodeOptimizer.OptimizeAll(threeAddressCode);
foreach (var x in optResult)
{
Console.WriteLine(x);
}
Console.WriteLine("\n\nDivided three address code");
var divResult = BasicBlockLeader.DivideLeaderToLeader(optResult);
foreach (var x in divResult)
{
foreach (var y in x.GetInstructions())
{
Console.WriteLine(y);
}
Console.WriteLine("--------------");
}
var cfg = new ControlFlowGraph(divResult);
Console.WriteLine("\n\n Edge Classification");
Console.WriteLine("----------");
foreach (var pair in cfg.ClassifiedEdges)
{
Console.WriteLine(pair);
}
Console.WriteLine("----------");
foreach (var block in cfg.GetCurrentBasicBlocks())
{
Console.WriteLine($"{cfg.VertexOf(block)} {block.GetInstructions()[0]}");
var children = cfg.GetChildrenBasicBlocks(cfg.VertexOf(block));
var childrenStr = string.Join(" | ", children.Select(v => v.block.GetInstructions()[0].ToString()));
Console.WriteLine($" children: {childrenStr}");
var parents = cfg.GetParentsBasicBlocks(cfg.VertexOf(block));
var parentsStr = string.Join(" | ", parents.Select(v => v.block.GetInstructions()[0].ToString()));
Console.WriteLine($" parents: {parentsStr}");
}
///
/// LiveVariableAnalysisAlgorithm
///
Console.WriteLine("------------");
Console.WriteLine();
var activeVariable = new LiveVariables();
var resActiveVariable = activeVariable.Execute(cfg);
foreach (var x in resActiveVariable)
{
foreach (var y in x.Value.In)
{
Console.WriteLine("In " + y);
}
Console.WriteLine();
foreach (var y in x.Value.Out)
{
Console.WriteLine("Out " + y);
}
}
Console.WriteLine();
Console.WriteLine();
Console.WriteLine("NatLoop");
var natLoops = NaturalLoop.GetAllNaturalLoops(cfg);
foreach (var x in natLoops)
{
if (x.Count == 0)
{
continue;
}
//Console.WriteLine("Loop");
for (var i = 0; i < x.Count; i++)
{
Console.WriteLine("NumberBlock:" + i);
foreach (var xfrom in x[i].GetInstructions())
{
Console.WriteLine(xfrom.ToString());
}
}
Console.WriteLine();
Console.WriteLine("-------------");
}
Console.WriteLine(" \nDone");
}
}
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();
}
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();
}
