public void testConsume()
{
Lexer lexer = new Lexer("123");
lexer.consume(2);
Assert.IsTrue(lexer.consumeIf("3"));
Assert.IsTrue(lexer.eof());
}
public void testColumn()
{
Lexer lexer = new Lexer("abcd\nwx\n\ny");
Assert.AreEqual(0, lexer.column);
lexer.consume(1);
Assert.AreEqual(1, lexer.column);
lexer.consume(2);
Assert.AreEqual(3, lexer.column);
lexer.consume(1);
Assert.AreEqual(4, lexer.column);
lexer.consume(1);
Assert.AreEqual(0, lexer.column);
lexer.consume(1);
Assert.AreEqual(1, lexer.column);
lexer.consume(1);
Assert.AreEqual(2, lexer.column);
lexer.consume(1);
Assert.AreEqual(0, lexer.column);
lexer.consume(1);
Assert.AreEqual(0, lexer.column);
lexer.consume(1);
Assert.AreEqual(1, lexer.column);
}
public void testConsumeIf()
{
Lexer lexer = new Lexer("abcd");
Assert.IsFalse(lexer.consumeIf("xab"));
Assert.IsTrue(lexer.consumeIf("ab"));
Assert.IsFalse(lexer.consumeIf("ycd"));
Assert.IsTrue(lexer.consumeIf("cd"));
Assert.IsTrue(lexer.eof());
}
public void testIndexOf()
{
Lexer lexer = new Lexer("1234");
Assert.AreEqual(2, lexer.IndexOf("34"));
Assert.AreEqual(2, lexer.IndexOf("3"));
Assert.AreEqual(0, lexer.IndexOf("12"));
Assert.AreEqual(0, lexer.IndexOf("1"));
Assert.AreEqual(1, lexer.IndexOf("2"));
Assert.AreEqual(1, lexer.IndexOf("234"));
Assert.AreEqual(-1, lexer.IndexOf("2345"));
Assert.AreEqual(-1, lexer.IndexOf("x"));
}
public void testNextIs()
{
Lexer lexer = new Lexer("abcd");
Assert.IsFalse(lexer.nextIs("xab"));
Assert.IsFalse(lexer.nextIs("abx"));
Assert.IsTrue(lexer.nextIs("ab"));
Assert.IsTrue(lexer.consumeIf("ab"));
Assert.IsFalse(lexer.nextIs("ycd"));
Assert.IsTrue(lexer.nextIs("cd"));
}
public string Transform(string input_)
{
this.input = new Lexer(input_);
Node n = parse();
var result = n.transform();
return result;
}
