/// <summary>
/// Converts a string to a Duration value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
/// <remarks>Copy of WebConvert.TryKeyStringToTime.</remarks>
private static bool TryUriStringToDuration(string text, out TimeSpan targetValue)
{
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixDuration, ref text))
{
targetValue = default(TimeSpan);
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = default(TimeSpan);
return(false);
}
try
{
targetValue = EdmValueParser.ParseDuration(text);
return(true);
}
catch (FormatException)
{
targetValue = default(TimeSpan);
return(false);
}
}
/// <summary>
/// Try to parse the given text to a Geometry object.
/// </summary>
/// <param name="text">Text to parse.</param>
/// <param name="targetValue">Geometry to return.</param>
/// <param name="parsingFailureReasonException">The detailed reason of parsing error.</param>
/// <returns>True if succeeds, false if not.</returns>
private static bool TryUriStringToGeometry(string text, out Geometry targetValue, out UriLiteralParsingException parsingFailureReasonException)
{
parsingFailureReasonException = null;
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixGeometry, ref text))
{
targetValue = default(Geometry);
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = default(Geometry);
return(false);
}
try
{
targetValue = LiteralUtils.ParseGeometry(text);
return(true);
}
catch (ParseErrorException e)
{
targetValue = default(Geometry);
parsingFailureReasonException =
new UriLiteralParsingException(e.Message);
return(false);
}
}
/// <summary>
/// Converts a string to a byte[] value.
/// </summary>
/// <param name="text">String text to convert.</param>
/// <param name="targetValue">After invocation, converted value.</param>
/// <returns>true if the value was converted; false otherwise.</returns>
/// <remarks>Copy of WebConvert.TryKeyStringToByteArray.</remarks>
private static bool TryUriStringToByteArray(string text, out byte[] targetValue)
{
Debug.Assert(text != null, "text != null");
if (!UriParserHelper.TryRemoveLiteralPrefix(ExpressionConstants.LiteralPrefixBinary, ref text))
{
targetValue = null;
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
targetValue = null;
return(false);
}
try
{
targetValue = Convert.FromBase64String(text);
}
catch (FormatException)
{
targetValue = null;
return(false);
}
return(true);
}
/// <summary>
/// Tries to remove formatting specific to this parser's expected type.
/// </summary>
/// <param name="text">The text to remove formatting from.</param>
/// <returns>Whether or not the expected formatting was found and succesfully removed.</returns>
internal virtual bool TryRemoveFormatting(ref string text)
{
if (this.prefix != null)
{
if (!UriParserHelper.TryRemovePrefix(this.prefix, ref text))
{
return(false);
}
}
bool shouldBeQuoted = this.prefix != null || ValueOfTypeCanContainQuotes(this.expectedType);
if (shouldBeQuoted && !UriParserHelper.TryRemoveQuotes(ref text))
{
return(false);
}
if (this.suffix != null)
{
// we need to try to remove the literal even if it isn't required.
if (!TryRemoveLiteralSuffix(this.suffix, ref text) && this.suffixRequired)
{
return(false);
}
}
return(true);
}
internal static bool TryBindIdentifier(string identifier, IEdmEnumTypeReference typeReference, IEdmModel modelWhenNoTypeReference, out QueryNode boundEnum)
{
boundEnum = null;
string text = identifier;
// parse the string, e.g., NS.Color'Green'
// get type information, and also convert Green into an ODataEnumValue
// find the first ', before that, it is namespace.type
int indexOfSingleQuote = text.IndexOf('\'');
if (indexOfSingleQuote < 0)
{
return(false);
}
string namespaceAndType = text.Substring(0, indexOfSingleQuote);
Debug.Assert((typeReference == null) || (modelWhenNoTypeReference == null), "((typeReference == null) || (modelWhenNoTypeReference == null)");
// validate typeReference but allow type name not found in model for delayed throwing.
if ((typeReference != null) && !string.Equals(namespaceAndType, typeReference.FullName()))
{
return(false);
}
// get the type
IEdmEnumType enumType = typeReference != null
?
(IEdmEnumType)typeReference.Definition
:
UriEdmHelpers.FindEnumTypeFromModel(modelWhenNoTypeReference, namespaceAndType);
if (enumType == null)
{
return(false);
}
// now, find out the value
UriParserHelper.TryRemovePrefix(namespaceAndType, ref text);
UriParserHelper.TryRemoveQuotes(ref text);
// parse string or int value to edm enum value
string enumValueString = text;
ODataEnumValue enumValue;
if (!TryParseEnum(enumType, enumValueString, out enumValue))
{
return(false);
}
// create an enum node, enclosing an odata enum value
IEdmEnumTypeReference enumTypeReference = typeReference ?? new EdmEnumTypeReference(enumType, false);
boundEnum = new ConstantNode(enumValue, identifier, enumTypeReference);
return(true);
}
internal IEdmTypeReference GetLiteralEdmTypeReference()
{
Debug.Assert(this.Kind != ExpressionTokenKind.CustomTypeLiteral || this.LiteralEdmType != null, "ExpressionTokenKind is marked as CustomTypeLiteral but not EdmType was set");
if (this.LiteralEdmType == null && this.Kind != ExpressionTokenKind.CustomTypeLiteral)
{
this.LiteralEdmType = UriParserHelper.GetLiteralEdmTypeReference(this.Kind);
}
return(this.LiteralEdmType);
}
/// <summary>
/// Remove the given literal prefix
/// </summary>
/// <param name="literalPrefix">The custom name of the literal prefix</param>
/// <returns>'true' if the literal prefix is successfully found and removed; otherwise, 'false'.</returns>
/// <exception cref="ArgumentNullException">Argument is null or empty</exception>
public static bool RemoveCustomLiteralPrefix(string literalPrefix)
{
// Arguments validation
ExceptionUtils.CheckArgumentStringNotNullOrEmpty(literalPrefix, "literalPrefix");
UriParserHelper.ValidatePrefixLiteral(literalPrefix);
// Try to remove the custom uri literal prefix from cache
lock (Locker)
{
return(CustomLiteralPrefixesOfEdmTypes.Remove(literalPrefix));
}
}
public void TryRemoveQuotesTest()
{
string test = "' '";
Assert.True(UriParserHelper.TryRemoveQuotes(ref test));
Assert.Equal(test, " ");
test = "invalid";
Assert.False(UriParserHelper.TryRemoveQuotes(ref test));
Assert.Equal(test, "invalid");
test = "'invalid";
Assert.False(UriParserHelper.TryRemoveQuotes(ref test));
Assert.Equal(test, "'invalid");
}
/// <summary>
/// Tries to remove formatting specific to this parser's expected type.
/// </summary>
/// <param name="text">The text to remove formatting from.</param>
/// <returns>
/// Whether or not the expected formatting was found and succesfully removed.
/// </returns>
internal override bool TryRemoveFormatting(ref string text)
{
if (!UriParserHelper.TryRemovePrefix(ExpressionConstants.LiteralPrefixBinary, ref text))
{
return(false);
}
if (!UriParserHelper.TryRemoveQuotes(ref text))
{
return(false);
}
return(true);
}
public void TryRemoveQuotesTest()
{
string test = "' '";
UriParserHelper.TryRemoveQuotes(ref test).Should().BeTrue();
test.Should().Be(" ");
test = "invalid";
UriParserHelper.TryRemoveQuotes(ref test).Should().BeFalse();
test.Should().Be("invalid");
test = "'invalid";
UriParserHelper.TryRemoveQuotes(ref test).Should().BeFalse();
test.Should().Be("'invalid");
}
public void IsCharHexDigitTest()
{
UriParserHelper.IsCharHexDigit(' ').Should().BeFalse();
UriParserHelper.IsCharHexDigit('0').Should().BeTrue();
UriParserHelper.IsCharHexDigit('1').Should().BeTrue();
UriParserHelper.IsCharHexDigit('9').Should().BeTrue();
UriParserHelper.IsCharHexDigit(':').Should().BeFalse();
UriParserHelper.IsCharHexDigit('A').Should().BeTrue();
UriParserHelper.IsCharHexDigit('B').Should().BeTrue();
UriParserHelper.IsCharHexDigit('F').Should().BeTrue();
UriParserHelper.IsCharHexDigit('G').Should().BeFalse();
UriParserHelper.IsCharHexDigit('a').Should().BeTrue();
UriParserHelper.IsCharHexDigit('b').Should().BeTrue();
UriParserHelper.IsCharHexDigit('f').Should().BeTrue();
UriParserHelper.IsCharHexDigit('g').Should().BeFalse();
}
public void IsCharHexDigitTest()
{
Assert.False(UriParserHelper.IsCharHexDigit(' '));
Assert.True(UriParserHelper.IsCharHexDigit('0'));
Assert.True(UriParserHelper.IsCharHexDigit('1'));
Assert.True(UriParserHelper.IsCharHexDigit('9'));
Assert.False(UriParserHelper.IsCharHexDigit(':'));
Assert.True(UriParserHelper.IsCharHexDigit('A'));
Assert.True(UriParserHelper.IsCharHexDigit('B'));
Assert.True(UriParserHelper.IsCharHexDigit('F'));
Assert.False(UriParserHelper.IsCharHexDigit('G'));
Assert.True(UriParserHelper.IsCharHexDigit('a'));
Assert.True(UriParserHelper.IsCharHexDigit('b'));
Assert.True(UriParserHelper.IsCharHexDigit('f'));
Assert.False(UriParserHelper.IsCharHexDigit('g'));
}
/// <summary>
/// Add a literal prefix for the given EdmType.
/// </summary>
/// <example>filter=MyProperty eq MyCustomLiteral'VALUE'.
/// "MyCustomLiteral" is the literal prefix and the <paramref name="literalEdmTypeReference"/> is the type of the "VALUE".</example>
/// <param name="literalPrefix">The custom name of the literal prefix</param>
/// <param name="literalEdmTypeReference">The edm type of the custom literal</param>
/// <exception cref="ArgumentNullException">Arguments are null or empty</exception>
/// <exception cref="ArgumentException">The given literal prefix is not valid</exception>
/// <exception cref="ODataException">The given literal prefix already exists</exception>
public static void AddCustomLiteralPrefix(string literalPrefix, IEdmTypeReference literalEdmTypeReference)
{
// Arguments validation
ExceptionUtils.CheckArgumentNotNull(literalEdmTypeReference, "literalEdmTypeReference");
ExceptionUtils.CheckArgumentStringNotNullOrEmpty(literalPrefix, "literalPrefix");
UriParserHelper.ValidatePrefixLiteral(literalPrefix);
// Try to add the custom uri literal to cache
lock (Locker)
{
// Check if literal does already exists
if (CustomLiteralPrefixesOfEdmTypes.ContainsKey(literalPrefix))
{
throw new ODataException(ODataErrorStrings.CustomUriTypePrefixLiterals_AddCustomUriTypePrefixLiteralAlreadyExists(literalPrefix));
}
CustomLiteralPrefixesOfEdmTypes.Add(literalPrefix, literalEdmTypeReference);
}
}
/*variable*/
/*private method*/
private void Init()
{
UriParserHelper.RegisterRtspUri();
InitEvent();
}
/// <summary>
/// Tries to remove formatting specific to this parser's expected type.
/// </summary>
/// <param name="text">The text to remove formatting from.</param>
/// <returns>
/// Whether or not the expected formatting was found and succesfully removed.
/// </returns>
internal override bool TryRemoveFormatting(ref string text)
{
return(UriParserHelper.TryRemoveQuotes(ref text));
}
private bool TryUriStringToPrimitive(string text, IEdmTypeReference targetType, out object targetValue, out UriLiteralParsingException exception)
{
Debug.Assert(text != null, "text != null");
Debug.Assert(targetType != null, "targetType != null");
exception = null;
try
{
if (targetType.IsNullable)
{
// COMPAT 38: Product does not support "null" literals in service operation arguments
// check for the 'null' constant for nullable types
if (text == ExpressionConstants.KeywordNull)
{
targetValue = null;
return(true);
}
}
IEdmPrimitiveTypeReference primitiveTargetType = targetType.AsPrimitiveOrNull();
if (primitiveTargetType == null)
{
targetValue = null;
return(false);
}
EdmPrimitiveTypeKind targetTypeKind = primitiveTargetType.PrimitiveKind();
byte[] byteArrayValue;
bool binaryResult = TryUriStringToByteArray(text, out byteArrayValue);
if (targetTypeKind == EdmPrimitiveTypeKind.Binary)
{
targetValue = (object)byteArrayValue;
return(binaryResult);
}
else if (binaryResult)
{
string keyValue = Encoding.UTF8.GetString(byteArrayValue, 0, byteArrayValue.Length);
return(TryUriStringToPrimitive(keyValue, targetType, out targetValue));
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Guid)
{
Guid guidValue;
bool result = UriUtils.TryUriStringToGuid(text, out guidValue);
targetValue = guidValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Date)
{
Date dateValue;
bool result = UriUtils.TryUriStringToDate(text, out dateValue);
targetValue = dateValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.DateTimeOffset)
{
DateTimeOffset dateTimeOffsetValue;
bool result = UriUtils.ConvertUriStringToDateTimeOffset(text, out dateTimeOffsetValue);
targetValue = dateTimeOffsetValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Duration)
{
TimeSpan timespanValue;
bool result = TryUriStringToDuration(text, out timespanValue);
targetValue = timespanValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Geography)
{
Geography geographyValue;
bool result = TryUriStringToGeography(text, out geographyValue, out exception);
targetValue = geographyValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.Geometry)
{
Geometry geometryValue;
bool result = TryUriStringToGeometry(text, out geometryValue, out exception);
targetValue = geometryValue;
return(result);
}
else if (targetTypeKind == EdmPrimitiveTypeKind.TimeOfDay)
{
TimeOfDay timeOfDayValue;
bool result = UriUtils.TryUriStringToTimeOfDay(text, out timeOfDayValue);
targetValue = timeOfDayValue;
return(result);
}
bool quoted = targetTypeKind == EdmPrimitiveTypeKind.String;
if (quoted != UriParserHelper.IsUriValueQuoted(text))
{
targetValue = null;
return(false);
}
if (quoted)
{
text = UriParserHelper.RemoveQuotes(text);
}
try
{
switch (targetTypeKind)
{
case EdmPrimitiveTypeKind.String:
targetValue = text;
break;
case EdmPrimitiveTypeKind.Boolean:
targetValue = XmlConvert.ToBoolean(text);
break;
case EdmPrimitiveTypeKind.Byte:
targetValue = XmlConvert.ToByte(text);
break;
case EdmPrimitiveTypeKind.SByte:
targetValue = XmlConvert.ToSByte(text);
break;
case EdmPrimitiveTypeKind.Int16:
targetValue = XmlConvert.ToInt16(text);
break;
case EdmPrimitiveTypeKind.Int32:
targetValue = XmlConvert.ToInt32(text);
break;
case EdmPrimitiveTypeKind.Int64:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixInt64, ref text);
targetValue = XmlConvert.ToInt64(text);
break;
case EdmPrimitiveTypeKind.Single:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixSingle, ref text);
targetValue = XmlConvert.ToSingle(text);
break;
case EdmPrimitiveTypeKind.Double:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixDouble, ref text);
targetValue = XmlConvert.ToDouble(text);
break;
case EdmPrimitiveTypeKind.Decimal:
UriParserHelper.TryRemoveLiteralSuffix(ExpressionConstants.LiteralSuffixDecimal, ref text);
try
{
targetValue = XmlConvert.ToDecimal(text);
}
catch (FormatException)
{
// we need to support exponential format for decimals since we used to support them in V1
decimal result;
if (Decimal.TryParse(text, NumberStyles.Float, NumberFormatInfo.InvariantInfo, out result))
{
targetValue = result;
}
else
{
targetValue = default(Decimal);
return(false);
}
}
break;
default:
throw new ODataException(ODataErrorStrings.General_InternalError(InternalErrorCodes.UriPrimitiveTypeParser_TryUriStringToPrimitive));
}
return(true);
}
catch (FormatException)
{
targetValue = null;
return(false);
}
catch (OverflowException)
{
targetValue = null;
return(false);
}
}
catch (Exception primitiveParserException)
{
exception = new UriLiteralParsingException(
string.Format(CultureInfo.InvariantCulture, ODataErrorStrings.UriPrimitiveTypeParsers_FailedToParseTextToPrimitiveValue(text, targetType),
primitiveParserException));
targetValue = null;
return(false);
}
}
/// <summary>Parses a token that starts with a digit.</summary>
/// <returns>The kind of token recognized.</returns>
private ExpressionTokenKind ParseFromDigit()
{
Debug.Assert(this.IsValidDigit || ('-' == this.ch), "this.IsValidDigit || ('-' == this.ch)");
ExpressionTokenKind result;
int tokenPos = this.textPos;
char startChar = this.ch.Value;
this.NextChar();
if (startChar == '0' && (this.ch == 'x' || this.ch == 'X'))
{
result = ExpressionTokenKind.BinaryLiteral;
do
{
this.NextChar();
}while (this.ch.HasValue && UriParserHelper.IsCharHexDigit(this.ch.Value));
}
else
{
result = ExpressionTokenKind.IntegerLiteral;
while (this.IsValidDigit)
{
this.NextChar();
}
// DateTimeOffset, Date and Guids will have '-' in them
if (this.ch == '-')
{
if (this.TryParseDateTimeoffset(tokenPos))
{
return(ExpressionTokenKind.DateTimeOffsetLiteral);
}
else if (this.TryParseGuid(tokenPos))
{
return(ExpressionTokenKind.GuidLiteral);
}
}
// TimeOfDay will have ":" in them
if (this.ch == ':')
{
if (this.TryParseTimeOfDay(tokenPos))
{
return(ExpressionTokenKind.TimeOfDayLiteral);
}
}
// Guids will have alpha-numeric characters along with '-', so if a letter is encountered
// try to see if this is Guid or not.
if (this.ch.HasValue && Char.IsLetter(this.ch.Value))
{
if (this.TryParseGuid(tokenPos))
{
return(ExpressionTokenKind.GuidLiteral);
}
}
if (this.ch == '.')
{
result = ExpressionTokenKind.DoubleLiteral;
this.NextChar();
this.ValidateDigit();
do
{
this.NextChar();
}while (this.IsValidDigit);
}
if (this.ch == 'E' || this.ch == 'e')
{
result = ExpressionTokenKind.DoubleLiteral;
this.NextChar();
if (this.ch == '+' || this.ch == '-')
{
this.NextChar();
}
this.ValidateDigit();
do
{
this.NextChar();
}while (this.IsValidDigit);
}
if (this.ch == 'M' || this.ch == 'm')
{
result = ExpressionTokenKind.DecimalLiteral;
this.NextChar();
}
else if (this.ch == 'd' || this.ch == 'D')
{
result = ExpressionTokenKind.DoubleLiteral;
this.NextChar();
}
else if (this.ch == 'L' || this.ch == 'l')
{
result = ExpressionTokenKind.Int64Literal;
this.NextChar();
}
else if (this.ch == 'f' || this.ch == 'F')
{
result = ExpressionTokenKind.SingleLiteral;
this.NextChar();
}
else
{
string valueStr = this.Text.Substring(tokenPos, this.textPos - tokenPos);
result = MakeBestGuessOnNoSuffixStr(valueStr, result);
}
}
return(result);
}
