public void ThrowExceptionAtEosTest() { Lexicon lexicon = new Lexicon(); Lexer global = lexicon.Lexer; var ID = global.DefineToken(RE.Range('a', 'z').Concat( (RE.Range('a', 'z') | RE.Range('0', '9')).Many())); var NUM = global.DefineToken(RE.Range('0', '9').Many1()); var WHITESPACE = global.DefineToken(RE.Symbol(' ').Many()); var ERROR = global.DefineToken(RE.Range(Char.MinValue, (char)255)); ScannerInfo info = lexicon.CreateScannerInfo(); Compiler.Scanner.Scan.Scanner scanner = new Compiler.Scanner.Scan.Scanner(info); string source = "aaa bbb ccc"; StringReader sr = new StringReader(source); scanner.SetSource(new SourceReader(sr)); scanner.SetTriviaTokens(WHITESPACE.Index, ERROR.Index); scanner.ThrowAtReadingAfterEndOfStream = true; Lexeme l1 = scanner.Read(); Assert.AreEqual(ID.Index, l1.TokenIndex); Assert.AreEqual("aaa", l1.ToContentString()); Assert.AreEqual(0, l1.PrefixTrivia.Count); Lexeme l2 = scanner.Read(); Assert.AreEqual(ID.Index, l2.TokenIndex); Assert.AreEqual("bbb", l2.ToContentString()); Assert.AreEqual(1, l2.PrefixTrivia.Count); Lexeme l3 = scanner.Read(); Assert.AreEqual(ID.Index, l3.TokenIndex); Assert.AreEqual("ccc", l3.ToContentString()); Assert.AreEqual(1, l3.PrefixTrivia.Count); Lexeme leof = scanner.Read(); Assert.AreEqual(info.EndOfStreamTokenIndex, leof.TokenIndex); Assert.AreEqual(leof.Span.StartLocation.CharIndex, leof.Span.EndLocation.CharIndex); Assert.AreEqual(source.Length, leof.Span.StartLocation.CharIndex); try { Lexeme leof2 = scanner.Read(); Assert.Fail("The Read above should throw an exception"); } catch (ScannerException) { Assert.True(true); } }
public void ErrorRecoveryTest() { Lexicon lexicon = new Lexicon(); Lexer global = lexicon.Lexer; var ID = global.DefineToken(RE.Range('a', 'z').Concat( (RE.Range('a', 'z') | RE.Range('0', '9')).Many())); var NUM = global.DefineToken(RE.Range('0', '9').Many1()); var WHITESPACE = global.DefineToken(RE.Symbol(' ').Many()); ScannerInfo info = lexicon.CreateScannerInfo(); Compiler.Scanner.Scan.Scanner scanner = new Compiler.Scanner.Scan.Scanner(info); string source = "asdf04a 1107 !@#$!@ Z if vvv xmlns 772737"; StringReader sr = new StringReader(source); scanner.SetSource(new SourceReader(sr)); scanner.SetTriviaTokens(WHITESPACE.Index); scanner.RecoverErrors = true; CompilationErrorManager em = new CompilationErrorManager(); em.DefineError(101, 0, CompilationStage.Scanning, "Invalid token: {0}"); var el = em.CreateErrorList(); scanner.ErrorList = el; scanner.LexicalErrorId = 101; Lexeme l1 = scanner.Read(); Assert.AreEqual(ID.Index, l1.TokenIndex); Lexeme l2 = scanner.Read(); Assert.AreEqual(NUM.Index, l2.TokenIndex); Assert.AreEqual(0, el.Count); Lexeme l3 = scanner.Read(); Assert.AreEqual(ID.Index, l3.TokenIndex); Assert.IsTrue(el.Count > 0); Assert.AreEqual(101, el[0].Info.Id); }
public void CompactCharSetTest() { Lexicon lexicon = new Lexicon(); Lexer global = lexicon.Lexer; Lexer keywords = global.CreateSubLexer(); Lexer xml = keywords.CreateSubLexer(); var lettersCategories = new[] { UnicodeCategory.LetterNumber, UnicodeCategory.LowercaseLetter, UnicodeCategory.ModifierLetter, UnicodeCategory.OtherLetter, UnicodeCategory.TitlecaseLetter, UnicodeCategory.UppercaseLetter }; var RE_IDCHAR = RE.CharsOf(c => lettersCategories.Contains(Char.GetUnicodeCategory(c))); var ID = global.DefineToken(RE_IDCHAR.Concat( (RE_IDCHAR | RE.Range('0', '9')).Many())); var NUM = global.DefineToken(RE.Range('0', '9').Many1()); var WHITESPACE = global.DefineToken(RE.Symbol(' ').Many()); var IF = keywords.DefineToken(RE.Literal("if")); var ELSE = keywords.DefineToken(RE.Literal("else")); var XMLNS = xml.DefineToken(RE.Literal("xmlns")); var scannerInfo = lexicon.CreateScannerInfo(); scannerInfo.CurrentLexerIndex = xml.Index; Compiler.Scanner.Scan.Scanner s = new Compiler.Scanner.Scan.Scanner(scannerInfo); string source = "xmlns 你好吗1 123 蘏臦囧綗 ABCD if"; SourceReader sr = new SourceReader(new StringReader(source)); s.SetSource(sr); s.SetTriviaTokens(WHITESPACE.Index); var l1 = s.Read(); Assert.AreEqual(XMLNS.Index, l1.TokenIndex); var l2 = s.Read(); Assert.AreEqual(ID.Index, l2.TokenIndex); var l3 = s.Read(); Assert.AreEqual(NUM.Index, l3.TokenIndex); var l4 = s.Read(); Assert.AreEqual(ID.Index, l4.TokenIndex); var l5 = s.Read(); Assert.AreEqual(ID.Index, l5.TokenIndex); var l6 = s.Read(); Assert.AreEqual(IF.Index, l6.TokenIndex); }
public void SkipTokenTest() { Lexicon lexicon = new Lexicon(); Lexer global = lexicon.Lexer; Lexer keywords = global.CreateSubLexer(); Lexer xml = keywords.CreateSubLexer(); var ID = global.DefineToken(RE.Range('a', 'z').Concat( (RE.Range('a', 'z') | RE.Range('0', '9')).Many())); var NUM = global.DefineToken(RE.Range('0', '9').Many1()); var WHITESPACE = global.DefineToken(RE.Symbol(' ').Many()); var ERROR = global.DefineToken(RE.Range(Char.MinValue, (char)255)); var IF = keywords.DefineToken(RE.Literal("if")); var ELSE = keywords.DefineToken(RE.Literal("else")); var XMLNS = xml.DefineToken(RE.Literal("xmlns")); ScannerInfo info = lexicon.CreateScannerInfo(); Compiler.Scanner.Scan.Scanner scanner = new Compiler.Scanner.Scan.Scanner(info); string source = "asdf04a 1107 else Z if vvv xmlns 772737"; StringReader sr = new StringReader(source); scanner.SetSource(new SourceReader(sr)); scanner.SetTriviaTokens(WHITESPACE.Index, ERROR.Index); info.CurrentLexerIndex = xml.Index; Lexeme l1 = scanner.Read(); Assert.AreEqual(ID.Index, l1.TokenIndex); Assert.AreEqual("asdf04a", l1.Value.Content); Assert.AreEqual(0, l1.PrefixTrivia.Count); Lexeme l2 = scanner.Read(); Assert.AreEqual(NUM.Index, l2.TokenIndex); Assert.AreEqual("1107", l2.Value.Content); Assert.AreEqual(1, l2.PrefixTrivia.Count); Lexeme l3 = scanner.Read(); Assert.AreEqual(ELSE.Index, l3.TokenIndex); Assert.AreEqual("else", l3.Value.Content); Assert.AreEqual(1, l2.PrefixTrivia.Count); Lexeme l4 = scanner.Read(); Assert.AreEqual(IF.Index, l4.TokenIndex); Assert.AreEqual("if", l4.Value.Content); Assert.AreEqual(3, l4.PrefixTrivia.Count); int p1 = scanner.Peek(); Assert.AreEqual(ID.Index, p1); int p2 = scanner.Peek2(); int p3 = scanner.Peek(3); int peof = scanner.Peek(4); Assert.AreEqual(info.EndOfStreamTokenIndex, peof); Lexeme l6 = scanner.Read(); Lexeme l7 = scanner.Read(); Assert.AreEqual(XMLNS.Index, l7.TokenIndex); Lexeme l8 = scanner.Read(); Assert.AreEqual(NUM.Index, l8.TokenIndex); Lexeme leof = scanner.Read(); Assert.AreEqual(info.EndOfStreamTokenIndex, leof.TokenIndex); Assert.AreEqual(leof.Value.Span.StartLocation.CharIndex, leof.Value.Span.EndLocation.CharIndex); Assert.AreEqual(source.Length, leof.Value.Span.StartLocation.CharIndex); }
public void ScannerTest() { Lexicon lexicon = new Lexicon(); Lexer global = lexicon.Lexer; Lexer keywords = global.CreateSubLexer(); Lexer xml = keywords.CreateSubLexer(); var ID = global.DefineToken(RE.Range('a', 'z').Concat( (RE.Range('a', 'z') | RE.Range('0', '9')).Many())); var NUM = global.DefineToken(RE.Range('0', '9').Many1()); var WHITESPACE = global.DefineToken(RE.Symbol(' ').Many()); var ERROR = global.DefineToken(RE.Range(Char.MinValue, (char)255)); var IF = keywords.DefineToken(RE.Literal("if")); var ELSE = keywords.DefineToken(RE.Literal("else")); var XMLNS = xml.DefineToken(RE.Literal("xmlns")); ScannerInfo info = lexicon.CreateScannerInfo(); Compiler.Scanner.Scan.Scanner scanner = new Compiler.Scanner.Scan.Scanner(info); string source = "asdf04a 1107 else Z if vvv xmlns 772737"; StringReader sr = new StringReader(source); scanner.SetSource(new SourceReader(sr)); Lexeme l1 = scanner.Read(); Assert.AreEqual(ID.Index, l1.TokenIndex); Assert.AreEqual("asdf04a", l1.Value.Content); Assert.AreEqual(0, l1.Value.Span.StartLocation.Column); Assert.AreEqual(6, l1.Value.Span.EndLocation.Column); Lexeme l2 = scanner.Read(); Assert.AreEqual(WHITESPACE.Index, l2.TokenIndex); Assert.AreEqual(" ", l2.Value.Content); Lexeme l3 = scanner.Read(); Assert.AreEqual(NUM.Index, l3.TokenIndex); Assert.AreEqual("1107", l3.Value.Content); Lexeme l4 = scanner.Read(); Assert.AreEqual(WHITESPACE.Index, l4.TokenIndex); Lexeme l5 = scanner.Read(); Assert.AreEqual(ID.Index, l5.TokenIndex); int p1 = scanner.Peek(); Assert.AreEqual(WHITESPACE.Index, p1); int p2 = scanner.Peek2(); Assert.AreEqual(ERROR.Index, p2); int p3 = scanner.Peek(3); Assert.AreEqual(WHITESPACE.Index, p3); int p4 = scanner.Peek(4); Assert.AreEqual(ID.Index, p4); int p5 = scanner.Peek(5); Assert.AreEqual(WHITESPACE.Index, p5); Lexeme l6 = scanner.Read(); Lexeme l7 = scanner.Read(); Assert.AreEqual(ERROR.Index, l7.TokenIndex); int p3_2 = scanner.Peek(); Assert.AreEqual(p3, p3_2); Lexeme l8 = scanner.Read(); // whitespace Lexeme l9 = scanner.Read(); // ID:if Lexeme l10 = scanner.Read(); // whitespace Lexeme l11 = scanner.Read(); // ID:vvv Lexeme l12 = scanner.Read(); // whitespace Lexeme l13 = scanner.Read(); // ID:xmlns Lexeme l14 = scanner.Read(); // whitespace Lexeme l15 = scanner.Read(); // NUM:772737 Lexeme leof = scanner.Read(); // eof Assert.AreEqual(info.EndOfStreamTokenIndex, leof.TokenIndex); Assert.AreEqual(leof.Value.Span.StartLocation.CharIndex, leof.Value.Span.EndLocation.CharIndex); Assert.AreEqual(source.Length, leof.Value.Span.StartLocation.CharIndex); Lexeme leof2 = scanner.Read(); //after eof, should return eof again Assert.AreEqual(info.EndOfStreamTokenIndex, leof2.TokenIndex); Assert.AreEqual(leof.Value.Span.StartLocation.CharIndex, leof2.Value.Span.StartLocation.CharIndex); }