/// <summary>
/// Computes values for enum members in the model with unspecified values.
/// </summary>
/// <param name="enumType">An enum type.</param>
/// <returns>List of enum members with all values resolved.</returns>
public IEnumerable<EnumMember> CalculateEnumMemberValues(EnumType enumType)
{
var enumMembers = new List<EnumMember>();
long nextValue = 0;
// Unspecified values are calculated based on the last specified value.
foreach (var enumMember in enumType.Members)
{
object value = null;
if (enumMember.Value != null)
{
value = enumMember.Value;
nextValue = Convert.ToInt64(enumMember.Value, CultureInfo.InvariantCulture) + 1;
}
else
{
value = nextValue;
nextValue++;
}
var resolvedEnumMember = this.CalculateValue(enumType, enumMember.Name, value);
enumMembers.Add(resolvedEnumMember);
}
return enumMembers;
}
private EnumMember CalculateValue(EnumType enumType, string name, object value)
{
EnumMember enumMember;
if (enumType.UnderlyingType == null)
{
enumMember = new EnumMember(name, Convert.ChangeType(value, typeof(int), CultureInfo.InvariantCulture));
}
else
{
enumMember = new EnumMember(name, Convert.ChangeType(value, enumType.UnderlyingType, CultureInfo.InvariantCulture));
}
return enumMember;
}
private XElement GenerateEnumType(EnumType enumType, XNamespace xmlNamespace)
{
return new XElement(
xmlNamespace + "EnumType",
new XAttribute("Name", enumType.Name),
enumType.IsFlags == null ? null : new XAttribute("IsFlags", enumType.IsFlags),
enumType.UnderlyingType == null ? null : new XAttribute("UnderlyingType", this.GetEdmNameForUnderlyingType(enumType.UnderlyingType)),
this.GenerateDocumentation(xmlNamespace, enumType),
this.GenerateEnumMembers(enumType.Members, xmlNamespace),
this.GenerateAnnotations(xmlNamespace, enumType));
}
/// <summary>
/// Removes an <see cref="EnumType"/> from the model
/// </summary>
/// <param name="enumType">Enum type to be removed</param>
public void Remove(EnumType enumType)
{
ExceptionUtilities.CheckArgumentNotNull(enumType, "enumType");
ExceptionUtilities.Assert(enumType.Model == this, "Enum type was not added to this model");
ExceptionUtilities.Assert(this.enumTypesList.Remove(enumType), "Enum type was not added to this model");
enumType.Model = null;
}
/// <summary>
/// Adds new <see cref="EnumType"/> to the model
/// </summary>
/// <param name="enumType">Enum type to be added</param>
public void Add(EnumType enumType)
{
ExceptionUtilities.CheckArgumentNotNull(enumType, "enumType");
ExceptionUtilities.Assert(enumType.Model == null, "Enum type was already added to another model");
enumType.Model = this;
this.enumTypesList.Add(enumType);
}
private EnumType ConvertToTaupoEnumType(IEdmEnumType edmEnum)
{
var taupoEnumType = new EnumType(edmEnum.Namespace, edmEnum.Name);
if (edmEnum.IsFlags)
{
taupoEnumType.IsFlags = true;
}
if (edmEnum.UnderlyingType != null)
{
taupoEnumType.UnderlyingType = this.ConvertToClrType(edmEnum.UnderlyingType);
}
foreach (var edmEnumMember in edmEnum.Members)
{
var taupoEnumMember = new EnumMember(edmEnumMember.Name);
if (edmEnumMember.Value != null)
{
taupoEnumMember.Value = this.ConvertToClrObject(edmEnumMember.Value);
}
taupoEnumType.Add(taupoEnumMember);
}
return taupoEnumType;
}
private void CompareEnumMember(EnumType expectedEnumType, EnumMember expectedMemeber, EnumType actualEnumType, EnumMember actualMember)
{
this.SatisfiesEquals(expectedMemeber.Name, actualMember.Name, "Enum member name not match.");
this.SatisfiesEquals(this.GetIntegralEnumMemberValue(expectedEnumType, expectedMemeber), this.GetIntegralEnumMemberValue(actualEnumType, actualMember), "Enum member value does not match.");
this.CompareAnnotations(expectedMemeber.Annotations, actualMember.Annotations);
}
private void CompareEnumMembers(EnumType expectedEnumType, EnumType actualEnumType)
{
this.SatisfiesEquals(expectedEnumType.Members.Count, actualEnumType.Members.Count, "Count of Members of '{0}' does not match.", expectedEnumType.FullName);
foreach (var expectedMemeber in expectedEnumType.Members)
{
var actualMembers = actualEnumType.Members.Where(m => m.Name == expectedMemeber.Name);
if (this.SatisfiesEquals(1, actualMembers.Count(), "Should find exactly one member '{0}'.", expectedMemeber.Name))
{
var actualMember = actualMembers.Single();
this.CompareEnumMember(expectedEnumType, expectedMemeber, actualEnumType, actualMember);
}
}
}
private object GetIntegralEnumMemberValue(EnumType enumType, EnumMember enumMember)
{
var targetEnumMember = enumType.Members.Single(n => n == enumMember);
if (targetEnumMember.Value != null)
{
long integralValue = 0;
if (long.TryParse(targetEnumMember.Value.ToString(), out integralValue))
{
return integralValue;
}
return targetEnumMember.Value;
}
if (enumType.Members.ElementAt(0) == targetEnumMember)
{
return 0L;
}
int memberIndex = 0;
for (int i = 1; i < enumType.Members.Count; ++i)
{
if (enumType.Members.ElementAt(i) == targetEnumMember)
{
memberIndex = i;
break;
}
}
var previousMember = enumType.Members.ElementAt(memberIndex - 1);
var previousValue = previousMember.Value;
if (previousValue == null)
{
previousValue = this.GetIntegralEnumMemberValue(enumType, previousMember);
}
long previousIntegralValue = 0;
if (long.TryParse(previousValue.ToString(), out previousIntegralValue))
{
return previousIntegralValue + 1;
}
else
{
return targetEnumMember.Value;
}
}
private void CompareEnumType(EnumType expectedEnumType, EnumType actualEnumType)
{
this.SatisfiesEquals(expectedEnumType.FullName, actualEnumType.FullName, "Enum type name does not match.");
if (expectedEnumType.IsFlags == null)
{
this.SatisfiesCondition(actualEnumType.IsFlags == null, "IsFlags should be null.");
}
else
{
this.SatisfiesEquals(expectedEnumType.IsFlags, actualEnumType.IsFlags, "IsFlags does not match.");
}
if (expectedEnumType.UnderlyingType == null)
{
this.SatisfiesCondition(actualEnumType.UnderlyingType == null, "Underlying type should be null.");
}
else
{
this.SatisfiesEquals(expectedEnumType.UnderlyingType, actualEnumType.UnderlyingType, "Underlying type does not match.");
}
this.CompareEnumMembers(expectedEnumType, actualEnumType);
}
private EnumType ParseEnumType(XElement enumTypeElement)
{
string name = enumTypeElement.GetRequiredAttributeValue("Name");
string underlyingTypeString = enumTypeElement.GetOptionalAttributeValue("UnderlyingType", null);
Type underlyingType = null;
if (underlyingTypeString != null)
{
string underlyingTypeName = this.ParseEdmTypeName(underlyingTypeString)[1];
underlyingType = Type.GetType("System." + underlyingTypeName);
}
var isFlagsString = enumTypeElement.Attribute("IsFlags");
var enumType = new EnumType(this.CurrentNamespace, name) { IsFlags = isFlagsString == null ? (bool?)null : bool.Parse(isFlagsString.Value), UnderlyingType = underlyingType };
foreach (var memberElement in enumTypeElement.Elements().Where(el => this.IsXsdlElement(el, "Member")))
{
enumType.Members.Add(this.ParseEnumMember(memberElement));
}
this.ParseAnnotations(enumType, enumTypeElement);
return enumType;
}
/// <summary>
/// Builds a code representation of an <see cref="EnumType"/>.
/// </summary>
/// <param name="type">The <see cref="EnumType"/> from which to generate code.</param>
/// <returns>A <see cref="CodeTypeDeclaration"/> which represents the <see cref="EnumType"/>.</returns>
protected virtual CodeTypeDeclaration BuildType(EnumType type)
{
var codeEnum = new CodeTypeDeclaration(type.Name);
codeEnum.IsEnum = true;
if (type.UnderlyingType != null)
{
codeEnum.BaseTypes.Add(type.UnderlyingType);
}
if (type.IsFlags == true)
{
codeEnum.AddCustomAttribute(typeof(FlagsAttribute));
}
ApplyTypeAccessModifier(codeEnum, type.Annotations.OfType<TypeAccessModifierAnnotation>().SingleOrDefault());
if (type.Annotations.Any(a => a is SerializableAnnotation))
{
codeEnum.AddCustomAttribute(typeof(SerializableAttribute));
}
this.AddEnumMembers(codeEnum, type);
return codeEnum;
}
/// <summary>
/// Adds enum members to the generated type class.
/// </summary>
/// <param name="codeEnum">The <see cref="CodeTypeDeclaration"/> to which to add the enum members.</param>
/// <param name="type">The definition of the enum type.</param>
protected virtual void AddEnumMembers(CodeTypeDeclaration codeEnum, EnumType type)
{
foreach (var member in type.Members)
{
var codeMember = new CodeMemberField(codeEnum.Name, member.Name);
if (member.Value != null)
{
codeMember.InitExpression = new CodeSnippetExpression(member.Value.ToString());
}
codeEnum.Members.Add(codeMember);
}
}
/// <summary>
/// Visit Enum type
/// </summary>
/// <param name="enumType">enum type to visit</param>
protected virtual void VisitEnumType(EnumType enumType)
{
this.VisitAnnotatedItem(enumType);
foreach (var enumMember in enumType.Members)
{
this.VisitEnumMember(enumMember);
}
}
private QueryScalarType CreateStubEnumType(EnumType enumType)
{
return new QueryClrEnumType(this.EvaluationStrategy, enumType, null);
}