/// <summary>
/// Formats an enumeration
/// </summary>
/// <param name="tsEnum">The enumeration</param>
/// <returns>The string representation of the enumeration</returns>
public virtual string Format(TsEnum tsEnum)
{
if (EnumsAsString)
{
return(FormatEnumAsStrings(tsEnum));
}
else
{
return(FormatEnumAsIntegers(tsEnum));
}
}
/// <summary>
/// Generates a TypeScript enum for a particular CLR enum type
/// </summary>
/// <param name="type">The enum type</param>
/// <returns>The resulting TypeScript enum</returns>
private TsEnum GenerateEnum(ITypeSymbol type)
{
var fields = type.GetMembers().OfType <IFieldSymbol>();
var entries = new Dictionary <string, long?>();
long lastValue = 0;
foreach (var field in fields)
{
var syntaxReference = field.DeclaringSyntaxReferences.FirstOrDefault();
if (syntaxReference == null)
{
//If syntaxReference is null then the enum comes from another projects which are not in the current
//Project.
return(new TsEnum(GetName(type), entries, true));
}
var parent = _compilation.GetSemanticModel(syntaxReference.SyntaxTree);
var syn = syntaxReference.GetSyntax();
var enumValue = syn.DescendantNodes().OfType <LiteralExpressionSyntax>().SingleOrDefault();
if (enumValue != null)
{
Optional <object> constantValue = parent.GetConstantValue(enumValue);
if (constantValue.HasValue)
{
lastValue = Convert.ToInt64(constantValue.Value);
entries.Add(field.Name, lastValue);
}
else
{
entries.Add(field.Name, ++lastValue);
}
}
else
{
entries.Add(field.Name, ++lastValue);
}
}
//The Enum can be defined within a class. In that case the class is a
//namespace and the enum will be generated in another module (Since we cannot
//define an enum within a typescript interface.
bool isExternallyDefined = !(type.ContainingSymbol is INamespaceSymbol);
var tsEnum = new TsEnum(GetName(type), entries, isExternallyDefined);
AddType(tsEnum, type);
return(tsEnum);
}
/// <summary>
/// Generates a TypeScript enum for a particular CLR enum type
/// </summary>
/// <param name="type">The enum type</param>
/// <returns>The resulting TypeScrpt enum</returns>
private TsEnum GenerateEnum(Type type)
{
var typeInfo = type.GetTypeInfo();
var names = typeInfo.GetEnumNames();
var values = typeInfo.GetEnumValues();
var entries = new Dictionary <string, long?>();
for (int i = 0; i < values.Length; i++)
{
entries.Add(names[i], Convert.ToInt64(values.GetValue(i)));
}
var tsEnum = new TsEnum(GetName(type), entries);
this.AddType(tsEnum, type);
return(tsEnum);
}
/// <summary>
/// Formats an enumeration as string
/// </summary>
/// <param name="tsEnum">The enumeration</param>
/// <returns>The string representation of the enumeration</returns>
protected string FormatEnumAsStrings(TsEnum tsEnum)
{
using (var sbc = new StringBuilderContext(this))
{
WriteIndent();
Write("type {0} = ", Format(tsEnum.Name));
var values = tsEnum.Values.OrderBy(x => x.Key).ToArray();
for (int i = 0; i < values.Length; i++)
{
var postFix = i < values.Length - 1 ? " | " : string.Empty;
var entry = values[i];
Write("\'{0}\'{1}", entry.Key, postFix);
}
Write(";");
WriteNewline();
return(sbc.ToString());
}
}
