static void Main(string[] args)
{
if (args.Length == 1)
{
debug = false;
}
switch (args.Length)
{
case 0:
Console.WriteLine("Specify a file path.");
break;
default:
FileStream fs;
try
{
fs = System.IO.File.OpenRead(args[0]);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
break;
}
MiniPL miniPL = MiniPL.GetInstance();
Scanner sc = miniPL.Scanner;
Parser ps = miniPL.Parser;
ParseTree ptree = ps.Parse(sc.Tokenize(fs));
MiniPL.Runnable prog = miniPL.ProcessParseTree(ptree, ps.Errors, ps.IsValidParseTree);
prog.Execute(Console.In, Console.Out);
break;
}
}
private List <Error> GetErrors(string program)
{
MiniPL miniPL = MiniPL.GetInstance();
Scanner sc = miniPL.Scanner;
Parser ps = miniPL.Parser;
ParseTree ptree = ps.Parse(sc.Tokenize(program));
MiniPL.Runnable prog = miniPL.ProcessParseTree(ptree, ps.Errors, ps.IsValidParseTree);
return(prog.errors);
}
private string RunWithInput(string program, string input)
{
MiniPL miniPL = MiniPL.GetInstance();
Scanner sc = miniPL.Scanner;
Parser ps = miniPL.Parser;
ParseTree ptree = ps.Parse(sc.Tokenize(program));
MiniPL.Runnable prog = miniPL.ProcessParseTree(ptree, ps.Errors, ps.IsValidParseTree);
StringWriter writer = new StringWriter();
StringReader reader = new StringReader(input);
prog.Execute(reader, writer);
return(writer.ToString());
}
public void Semantics_DeclarationScanTest()
{
string text = "print \"Give a number\";\n" +
"var n : int;\n" +
"read n;\n" +
"var f : int := 1;\n" +
"var i : int;\n" +
"for i in 1..n do\n" +
" f := f * i;\n" +
"end for;\n" +
"print \"The result is: \";\n" +
"print f;";
MiniPL miniPL = MiniPL.GetInstance();
Scanner sc = miniPL.Scanner;
Parser ps = miniPL.Parser;
ParseTree ptree = ps.Parse(sc.Tokenize(text));
MiniPL.Runnable prog = miniPL.ProcessParseTree(ptree, ps.Errors, ps.IsValidParseTree);
Assert.AreEqual(3, prog.declarations.Count);
}