/// <summary>
/// Parses a subsection of the given string into a TypeCode and size, returning the nested content
/// as a remainder.
/// Given a string of ARRAY{STRING}, the remainer will be 'STRING' and the returned typecode will be ARRAY.
/// </summary>
private static bool TryParsePartial(string complexName, out TypeCode typeCode, out int?size, out string remainder)
{
typeCode = TypeCode.Unspecified;
size = null;
remainder = null;
if (string.IsNullOrEmpty(complexName))
{
return(false);
}
int remainderStart = complexName.IndexOfAny(new[] { '<', '(' });
remainderStart = remainderStart != -1 ? remainderStart : complexName.Length;
typeCode = TypeCodeExtensions.GetTypeCode(complexName.Substring(0, remainderStart));
if (typeCode == TypeCode.Unspecified)
{
return(false);
}
if (complexName.Length > remainderStart)
{
if (complexName[remainderStart] == '(')
{
//get the size and remainder to send back
var sizeEnd = complexName.IndexOf(')');
if (sizeEnd == -1)
{
return(false);
}
var sizeString = complexName.Substring(remainderStart + 1, sizeEnd - remainderStart - 1).Trim();
if (!sizeString.Equals("MAX", StringComparison.OrdinalIgnoreCase) &&
int.TryParse(sizeString, out int parsedSize))
{
size = parsedSize;
}
remainder = complexName.Substring(sizeEnd + 1).Trim();
}
else
{
var innerEnd = complexName.LastIndexOf('>');
if (innerEnd == -1)
{
return(false);
}
//get the remainder to send back.
remainder = complexName.Substring(remainderStart + 1, innerEnd - remainderStart - 1).Trim();
}
}
return(true);
}
private static ResultSetMetadata CreateSingleFieldMetadata(TypeCode typeCode) =>
new ResultSetMetadata
{
RowType = new StructType
{
Fields =
{
new StructType.Types.Field
{
Name = "col1", Type = new V1.Type{
Code = typeCode
}
}
}
}
};
/// <inheritdoc />
public override string ToString()
{
if (ArrayElementType != null)
{
return($"ARRAY<{ArrayElementType}>");
}
if (StructMembers != null && StructMembers.Count > 0)
{
var s = new StringBuilder();
foreach (var keyValuePair in StructMembers)
{
s.Append(s.Length == 0 ? "STRUCT<" : ", ");
s.Append($"{keyValuePair.Key}:{keyValuePair.Value}");
}
s.Append(">");
return(s.ToString());
}
return(Size.HasValue ? $"{TypeCode.GetOriginalName()}({Size})" : TypeCode.GetOriginalName());
}
/// <inheritdoc />
public override string ToString()
{
if (ArrayElementType != null)
{
return($"ARRAY<{ArrayElementType}>");
}
if (StructFields != null && StructFields.Count > 0)
{
var s = new StringBuilder();
foreach (var field in StructFields)
{
s.Append(s.Length == 0 ? "STRUCT<" : ", ");
s.Append(field.Name == "" ? field.Type.ToString() : $"{field.Name}: {field.Type}");
}
s.Append(">");
return(s.ToString());
}
return(Size.HasValue ? $"{TypeCode.GetOriginalName()}({Size})" : TypeCode.GetOriginalName());
}
private SpannerDbType(TypeCode typeCode, SpannerDbType arrayElementType)
: this(typeCode) => ArrayElementType = arrayElementType;
private SpannerDbType(TypeCode typeCode, int?size = null)
{
GaxPreconditions.CheckNonNegative(size.GetValueOrDefault(), "Size must be nonnegative.");
TypeCode = typeCode;
Size = size;
}
internal static SpannerDbType FromTypeCode(TypeCode code) => s_simpleTypes.TryGetValue(code, out SpannerDbType type) ? type : null;
private SpannerDbType(TypeCode typeCode, int?size = null)
{
TypeCode = typeCode;
Size = size;
}