public void Test_DfaLexeme_Given_Number_When_Character_Lexeme_Then_Failes_Match() { var numberInput = "0"; var dfa = new DfaState(); var final = new DfaState(true); dfa.AddEdge(new DfaEdge(new RangeTerminal('a', 'z'), final)); final.AddEdge(new DfaEdge(new RangeTerminal('a', 'z'), final)); var letterLexeme = new DfaLexeme(dfa, new TokenType("lowerCase")); Assert.IsFalse(letterLexeme.Scan(numberInput[0])); Assert.AreEqual(string.Empty, letterLexeme.Capture); }
public void Test_DfaLexeme_That_Whitespace_One_Or_Many_Matches_Random_Whitespace() { var randomWhitespace = "\t\f\v \r\n"; var dfa = new DfaState(); var final = new DfaState(true); dfa.AddEdge(new DfaEdge(new WhitespaceTerminal(), final)); final.AddEdge(new DfaEdge(new WhitespaceTerminal(), final)); var whitespaceLexeme = new DfaLexeme(dfa, new TokenType("whitespace")); for (int i = 0; i < randomWhitespace.Length; i++) Assert.IsTrue(whitespaceLexeme.Scan(randomWhitespace[i])); }
public void Test_DfaLexeme_Given_Mixed_Case_Word_When_Identifier_Lexeme_Then_Matches_Input() { var wordInput = "t90vAriabl3"; var dfa = new DfaState(); var final = new DfaState(true); dfa.AddEdge(new DfaEdge(new RangeTerminal('a', 'z'), final)); dfa.AddEdge(new DfaEdge(new RangeTerminal('A', 'Z'), final)); final.AddEdge(new DfaEdge(new RangeTerminal('a', 'z'), final)); final.AddEdge(new DfaEdge(new RangeTerminal('A', 'Z'), final)); final.AddEdge(new DfaEdge(new DigitTerminal(), final)); var indentifierLexeme = new DfaLexeme(dfa, new TokenType("Identifier")); for (int i = 0; i < wordInput.Length; i++) Assert.IsTrue(indentifierLexeme.Scan(wordInput[i])); }