public void Verify_postfix_lexer_logic()
{
const string expression = "true true && false ||";
var lexer = new PostfixLexer();
var tokens = lexer.Analyze(expression, false);
Assert.AreEqual(tokens.Length, 9);
Assert.AreEqual(tokens[0], "true");
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], "false");
Assert.AreEqual(tokens[7], " ");
Assert.AreEqual(tokens[8], "||");
tokens = lexer.Analyze(expression, true);
Assert.AreEqual(tokens.Length, 5);
Assert.AreEqual(tokens[0], "true");
Assert.AreEqual(tokens[1], "true");
Assert.AreEqual(tokens[2], "&&");
Assert.AreEqual(tokens[3], "false");
Assert.AreEqual(tokens[4], "||");
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 PostfixParser()
{
_postfixLexer = new PostfixLexer();
}
