public void TestLexer2()
{
string path = @"..\..\..\TestSamples\code2.cpp";
Assert.IsTrue(File.Exists(path));
var tokens = new List<Token>();
using( var reader = new StreamReader(path))
{
var lex = new Lexer(reader);
while (!lex.EofReached)
tokens.Add(lex.Scan());
Assert.AreEqual(8, Lexer.Line);
}
Assert.AreEqual(35, tokens.Count);
Assert.IsNull(tokens[34]);// the last one is null
var expect = new List<string>
{
"{",
"int", "i", ";",
"float", "[", "100", "]", "a", ";",
"while", "(", "true", ")",
"{",
"do", "i", "=", "i", "+", "1", ";",
"while","(","a","[","i", "]", "<", "42",")",";",
"}",
"}"
};
for (int i = 0; i != tokens.Count - 1; ++i)
Assert.AreEqual(expect[i], tokens[i].ToString());
}
/// <summary>
/// Ctor
/// </summary>
/// <param name="lex">Lexer</param>
public Parser(Lexer lex)
{
this.Top = null;
this.Used = 0;
this._lexer = lex;
this.Move();
}
static void Main(string[] args)
{
if (args.Count() != 1)
{
Console.WriteLine("Please specify code file");
return;
}
var lex = new Lexer(new StreamReader(args[0]));
var parse = new Parser(lex);
parse.Program();
Console.WriteLine();
}
public void TestLexer1()
{
string path = @"..\..\..\TestSamples\code1.cpp";
Assert.IsTrue(File.Exists(path));
var reader = new StreamReader(path);
var lex = new Lexer(reader);
var tokens = new List<Token>();
while (!lex.EofReached)
tokens.Add(lex.Scan());
reader.Close();
Assert.AreEqual(2, Lexer.Line);
Assert.AreEqual(3, tokens.Count);
Assert.IsNull(tokens[2]);// the last one is null
}