public void ShouldErrorWhenIncorrectCharacterAtStart()
{
ExpressionLexer lexer = new ExpressionLexer("#$*@#", false, false);
ExpressionToken resultToken;
Exception error = null;
bool result = lexer.TryPeekNextToken(out resultToken, out error);
result.Should().BeFalse();
error.Should().NotBeNull();
error.Message.Should().Be(ODataErrorStrings.ExpressionLexer_InvalidCharacter("#", "0", "#$*@#"));
}
public void ShouldErrorWhenIncorrectCharacterAtStart()
{
ExpressionLexer lexer = new ExpressionLexer("#$*@#", false, false);
ExpressionToken resultToken;
Exception error = null;
bool result = lexer.TryPeekNextToken(out resultToken, out error);
Assert.False(result);
Assert.NotNull(error);
Assert.Equal(ODataErrorStrings.ExpressionLexer_InvalidCharacter("#", "0", "#$*@#"), error.Message);
}
public void ShouldOutputTokenAndTrueWhenNoError()
{
ExpressionLexer lexer = new ExpressionLexer("null", false, false);
ExpressionToken resultToken;
Exception error = null;
bool result = lexer.TryPeekNextToken(out resultToken, out error);
lexer.CurrentToken.Should().NotBe(resultToken);
result.Should().BeTrue();
resultToken.Kind.Should().Be(ExpressionTokenKind.NullLiteral);
error.Should().BeNull();
}
public void ShouldOutputTokenAndTrueWhenNoError()
{
ExpressionLexer lexer = new ExpressionLexer("null", false, false);
ExpressionToken resultToken;
Exception error = null;
bool result = lexer.TryPeekNextToken(out resultToken, out error);
Assert.NotEqual(resultToken, lexer.CurrentToken);
Assert.True(result);
Assert.Equal(ExpressionTokenKind.NullLiteral, resultToken.Kind);
Assert.Null(error);
}
/// <summary>
/// Converts the given <paramref name="value"/> to a corresponding CLR type. Expects the
/// <paramref name="value"/> to have already been properly unescaped from an actual Uri.
/// </summary>
/// <param name="value">Value from a Uri to be converted.</param>
/// <param name="version">Version to be compliant with.</param>
/// <param name="model">Optional model to perform verification against.</param>
/// <param name="typeReference">Optional IEdmTypeReference to perform verification against.
/// Callers must provide a <paramref name="model"/> containing this type if it is specified.</param>
/// <returns>A CLR object that the <paramref name="value"/> represents or an EnumNode.</returns>
public static object ConvertFromUriLiteral(string value, ODataVersion version, IEdmModel model, IEdmTypeReference typeReference)
{
ExceptionUtils.CheckArgumentNotNull(value, "value");
if (typeReference != null && model == null)
{
throw new ODataException(ODataErrorStrings.ODataUriUtils_ConvertFromUriLiteralTypeRefWithoutModel);
}
if (model == null)
{
model = Microsoft.OData.Edm.EdmCoreModel.Instance;
}
// Let ExpressionLexer try to get a primitive
ExpressionLexer lexer = new ExpressionLexer(value, false /*moveToFirstToken*/, false /*useSemicolonDelimeter*/);
Exception error;
ExpressionToken token;
lexer.TryPeekNextToken(out token, out error);
if (token.Kind == ExpressionTokenKind.BracedExpression && typeReference != null && typeReference.IsStructured())
{
return(ODataUriConversionUtils.ConvertFromResourceValue(value, model, typeReference));
}
if (token.Kind == ExpressionTokenKind.BracketedExpression)
{
return(ODataUriConversionUtils.ConvertFromCollectionValue(value, model, typeReference));
}
QueryNode enumConstNode;
if ((token.Kind == ExpressionTokenKind.Identifier) && // then try parsing the entire text as enum value
EnumBinder.TryBindIdentifier(lexer.ExpressionText, null, model, out enumConstNode))
{
return(((ConstantNode)enumConstNode).Value);
}
object result = lexer.ReadLiteralToken();
// If we have a typeReference then perform verification and convert if necessary
if (typeReference != null)
{
result = ODataUriConversionUtils.VerifyAndCoerceUriPrimitiveLiteral(result, value, model, typeReference);
}
return(result);
}
/// <summary>
/// Converts the given <paramref name="value"/> to a corresponding CLR type. Expects the
/// <paramref name="value"/> to have already been properly unescaped from an actual Uri.
/// </summary>
/// <param name="value">Value from a Uri to be converted.</param>
/// <param name="version">Version to be compliant with.</param>
/// <param name="model">Optional model to perform verification against.</param>
/// <param name="typeReference">Optional IEdmTypeReference to perform verification against.
/// Callers must provide a <paramref name="model"/> containing this type if it is specified.</param>
/// <returns>A CLR object that the <paramref name="value"/> represents or an EnumNode.</returns>
public static object ConvertFromUriLiteral(string value, ODataVersion version, IEdmModel model, IEdmTypeReference typeReference)
{
ExceptionUtils.CheckArgumentNotNull(value, "value");
if (typeReference != null && model == null)
{
throw new ODataException(ODataErrorStrings.ODataUriUtils_ConvertFromUriLiteralTypeRefWithoutModel);
}
if (model == null)
{
model = Microsoft.OData.Edm.Library.EdmCoreModel.Instance;
}
// Let ExpressionLexer try to get a primitive
ExpressionLexer lexer = new ExpressionLexer(value, false /*moveToFirstToken*/, false /*useSemicolonDelimeter*/);
Exception error;
ExpressionToken token;
lexer.TryPeekNextToken(out token, out error);
if (token.Kind == ExpressionTokenKind.BracketedExpression)
{
return ODataUriConversionUtils.ConvertFromComplexOrCollectionValue(value, model, typeReference);
}
QueryNode enumConstNode;
if ((token.Kind == ExpressionTokenKind.Identifier) // then try parsing the entire text as enum value
&& EnumBinder.TryBindIdentifier(lexer.ExpressionText, null, model, out enumConstNode))
{
return ((ConstantNode)enumConstNode).Value;
}
object result = lexer.ReadLiteralToken();
// If we have a typeReference then perform verification and convert if necessary
if (typeReference != null)
{
result = ODataUriConversionUtils.VerifyAndCoerceUriPrimitiveLiteral(result, model, typeReference);
}
return result;
}