public void Should_not_move_forward_when_using_peek() { // Given when var scanner = new Lexer(Tokenizer.OfString("1 + 3")); // Then ((LiteralToken)scanner.PeekToken()).Value.Should().Be(1D); ((LiteralToken)scanner.NextToken()).Value.Should().Be(1D); // Then scanner.PeekToken().Type.Should().Be(TokenType.Plus); scanner.NextToken().Type.Should().Be(TokenType.Plus); // Then ((LiteralToken)scanner.PeekToken()).Value.Should().Be(3D); ((LiteralToken)scanner.NextToken()).Value.Should().Be(3D); // Then scanner.PeekToken().Should().BeNull(); scanner.NextToken().Should().BeNull(); }
public void Should_lex_number_with_exponent_and_plus_sign() { // Given when var scanner = new Lexer(Tokenizer.OfString("1 + 10E+2")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(1D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(1000D); }
public void Should_lex_false_literal() { // Given when var scanner = new Lexer(Tokenizer.OfString("false != .01")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(false); scanner.NextToken().Type.Should().Be(TokenType.Inequality); ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.01D); }
public void Should_lex_expression_formed_by_a_single_positive_number_with_plus_sign_explicit() { // Given when var scanner = new Lexer(Tokenizer.OfString("+123")); // Then scanner.PeekToken().Type.Should().Be(TokenType.Plus); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.PeekToken()).Value.Should().Be(123D); ((LiteralToken)scanner.NextToken()).Value.Should().Be(123D); }
public void Should_lex_expression_containing_string_literal() { // Given when var scanner = new Lexer(Tokenizer.OfString(".3 + \"hello, fsharp\" + 0.999")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.3D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be("hello, fsharp"); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.999D); }
public void Should_lex_string_literal_with_decimal_escape() { // Given when var scanner = new Lexer(Tokenizer.OfString(@" ""\048\048\055"" ")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be("007"); }
public void Should_lex_equality_operator() { // Given when var scanner = new Lexer(Tokenizer.OfString("var1 == 10.3")); // Than ((IdentifierToken)scanner.NextToken()).Text.Should().Be("var1"); scanner.NextToken().Type.Should().Be(TokenType.Equality); ((LiteralToken)scanner.NextToken()).Value.Should().Be(10.3D); }
public void Should_lex_number_with_lower_case_exponent_and_minus_sign() { // Given when var scanner = new Lexer(Tokenizer.OfString("10E-11 + 10e-11")); // Than ((LiteralToken) scanner.NextToken()).Value.Should().Be(0.0000000001D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.0000000001D); }
public void Should_lex_expression_with_function() { // Given when var scanner = new Lexer(Tokenizer.OfString("3 + pow(10, 2)")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(3D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((IdentifierToken)scanner.NextToken()).Text.Should().Be("pow"); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); ((LiteralToken)scanner.NextToken()).Value.Should().Be(10D); scanner.NextToken().Type.Should().Be(TokenType.Comma); ((LiteralToken)scanner.NextToken()).Value.Should().Be(2D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); }
public void Should_lex_identifier_with_underscore() { // Given when var scanner = new Lexer(Tokenizer.OfString("var_name")); // Than ((IdentifierToken)scanner.NextToken()).Text.Should().Be("var_name"); }
public void Should_lex_expression_with_sum_near_unary_operators() { // Given when var scanner = new Lexer(Tokenizer.OfString("-.23 + +.99 * ((-.123 + -2.1)--333)")); // Than scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(.23D); scanner.NextToken().Type.Should().Be(TokenType.Plus); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(.99D); scanner.NextToken().Type.Should().Be(TokenType.Multiply); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(.123D); scanner.NextToken().Type.Should().Be(TokenType.Plus); scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(2.1D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); scanner.NextToken().Type.Should().Be(TokenType.Minus); ; scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(333D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); }
public void Should_lex_expression_formed_by_negative_and_positive_decimal_number_with_zero_omitted_and_explicit_sign() { // Given when var scanner = new Lexer(Tokenizer.OfString(".2 / +9.99 * (-.123 + -2)")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(.2D); scanner.NextToken().Type.Should().Be(TokenType.Divide); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(9.99D); scanner.NextToken().Type.Should().Be(TokenType.Multiply); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(.123D); scanner.NextToken().Type.Should().Be(TokenType.Plus); scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(2D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); }
public void Should_lex_expression_formed_by_a_single_negative__decimal_number_with_zero_omitted() { // Given when var scanner = new Lexer(Tokenizer.OfString("-.123")); // Than scanner.PeekToken().Type.Should().Be(TokenType.Minus); scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.PeekToken()).Value.Should().Be(.123D); ((LiteralToken)scanner.NextToken()).Value.Should().Be(.123D); }
public void Should_lex_number_with_lower_case_exponent() { // Given when var scanner = new Lexer(Tokenizer.OfString("10e2 + 4")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(1000D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(4D); }
public void Should_lex_inequality_operator() { // Given when var scanner = new Lexer(Tokenizer.OfString(".3 != 0.003003")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.3D); scanner.NextToken().Type.Should().Be(TokenType.Inequality); ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.003003D); }
public void Should_lex_expression_with_nested_parentheses() { // Given when var scanner = new Lexer(Tokenizer.OfString("((10 + 1 - (3 - .234)) * 300) / 10.1")); // Then scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); ((LiteralToken) scanner.NextToken()).Value.Should().Be(10D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(1D); scanner.NextToken().Type.Should().Be(TokenType.Minus); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); ((LiteralToken)scanner.NextToken()).Value.Should().Be(3D); scanner.NextToken().Type.Should().Be(TokenType.Minus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(.234D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); scanner.NextToken().Type.Should().Be(TokenType.Multiply); ((LiteralToken)scanner.NextToken()).Value.Should().Be(300D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); scanner.NextToken().Type.Should().Be(TokenType.Divide); ((LiteralToken)scanner.NextToken()).Value.Should().Be(10.1D); scanner.NextToken().Should().BeNull(); }
public void Should_lex_less_than_or_equal_operator() { // Given when var scanner = new Lexer(Tokenizer.OfString(".3 <= .9")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.3D); scanner.NextToken().Type.Should().Be(TokenType.LessThanOrEqual); ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.9D); }
public void Should_lex_string_literal() { // Given when var scanner = new Lexer(Tokenizer.OfString("\"hello, csharp\"")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be("hello, csharp"); }
public void Should_lex_greater_than_operator() { // Given when var scanner = new Lexer(Tokenizer.OfString("10 > (10 * 2.2)")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(10D); scanner.NextToken().Type.Should().Be(TokenType.GreaterThan); scanner.NextToken().Type.Should().Be(TokenType.LeftParenthesis); ((LiteralToken)scanner.NextToken()).Value.Should().Be(10D); scanner.NextToken().Type.Should().Be(TokenType.Multiply); ((LiteralToken)scanner.NextToken()).Value.Should().Be(2.2D); scanner.NextToken().Type.Should().Be(TokenType.RightParenthesis); }
public void Should_lex_string_literal_with_escape_characters() { // Given when var scanner = new Lexer(Tokenizer.OfString(@"0 + ""\t \n \\ \r"" + 0")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(0D); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be("\t \n \\ \r"); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(0D); }
public void Should_lex_greater_than_or_equal_operator() { // Given when var scanner = new Lexer(Tokenizer.OfString("0.1 >= +5.9")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(0.1D); scanner.NextToken().Type.Should().Be(TokenType.GreaterThanOrEqual); scanner.NextToken().Type.Should().Be(TokenType.Plus); ((LiteralToken)scanner.NextToken()).Value.Should().Be(5.9D); }
public void Should_lex_string_literal_with_double_quote_escape_character() { // Given when var scanner = new Lexer(Tokenizer.OfString(@" ""a\""bc"" ")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be("a\"bc"); }
public void Should_lex_true_literal() { // Given when var scanner = new Lexer(Tokenizer.OfString("true == 1")); // Than ((LiteralToken)scanner.NextToken()).Value.Should().Be(true); scanner.NextToken().Type.Should().Be(TokenType.Equality); ((LiteralToken)scanner.NextToken()).Value.Should().Be(1D); }
public void Should_lex_expression_with_modulo() { // Given when var scanner = new Lexer(Tokenizer.OfString("10 % 2")); ((LiteralToken)scanner.PeekToken()).Value.Should().Be(10D); ((LiteralToken)scanner.NextToken()).Value.Should().Be(10D); // Then scanner.PeekToken().Type.Should().Be(TokenType.Modulo); scanner.NextToken().Type.Should().Be(TokenType.Modulo); }
public void Should_lex_expression_formed_by_a_single_number() { // Given when var scanner = new Lexer(Tokenizer.OfString("123")); // Then ((LiteralToken)scanner.PeekToken()).Value.Should().Be(123D); ((LiteralToken)scanner.NextToken()).Value.Should().Be(123D); }