public void Verify_infix_lexer_logic()
{
const string expression = "( true && (true) ) || false";
var lexer = new InfixLexer();
var tokens = lexer.Analyze(expression, false);
Assert.AreEqual(tokens.Length, 15);
Assert.AreEqual(tokens[0], "(");
Assert.AreEqual(tokens[1], " ");
Assert.AreEqual(tokens[2], "true");
Assert.AreEqual(tokens[3], " ");
Assert.AreEqual(tokens[4], "&&");
Assert.AreEqual(tokens[5], " ");
Assert.AreEqual(tokens[6], "(");
Assert.AreEqual(tokens[7], "true");
Assert.AreEqual(tokens[8], ")");
Assert.AreEqual(tokens[9], " ");
Assert.AreEqual(tokens[10], ")");
Assert.AreEqual(tokens[11], " ");
Assert.AreEqual(tokens[12], "||");
Assert.AreEqual(tokens[13], " ");
Assert.AreEqual(tokens[14], "false");
tokens = lexer.Analyze(expression, true);
Assert.AreEqual(tokens.Length, 9);
Assert.AreEqual(tokens[0], "(");
Assert.AreEqual(tokens[1], "true");
Assert.AreEqual(tokens[2], "&&");
Assert.AreEqual(tokens[3], "(");
Assert.AreEqual(tokens[4], "true");
Assert.AreEqual(tokens[5], ")");
Assert.AreEqual(tokens[6], ")");
Assert.AreEqual(tokens[7], "||");
Assert.AreEqual(tokens[8], "false");
try
{
lexer.Analyze("true + false", false);
Assert.Fail();
}
catch (Exception e)
{
Assert.IsTrue(e is ArgumentException);
}
try
{
lexer.Analyze("true && 7", false);
Assert.Fail();
}
catch (Exception e)
{
Assert.IsTrue(e is ArgumentException);
}
}
public InfixToPostfixConverter()
{
_infixLexer = new InfixLexer();
}
