/// <summary>
/// Returns a list of all namespaces referenced/used in this property.
/// </summary>
internal IEnumerable <string> GetNamespaces()
{
foreach (string ns in Type.GetNamespaces())
{
yield return(ns);
}
foreach (string?ns in Attributes.Select(x => x.Identifier.Namespace))
{
if (ns != null)
{
yield return(ns);
}
}
if (Initializer != null)
{
foreach (string ns in Initializer.GetNamespaces())
{
yield return(ns);
}
}
if (GetterExpression != null)
{
foreach (string ns in GetterExpression.GetNamespaces())
{
yield return(ns);
}
}
}
public PropertyDeclarationSyntax ToSyntax()
{
var propertyDeclaration = PropertyDeclaration(Type.ToSyntax(), Identifier(Name))
.WithModifiers(TokenList(Token(SyntaxKind.PublicKeyword)))
.WithDocumentation(Description);
return((GetterExpression == null)
? propertyDeclaration.WithAccessorList(AccessorList(List(GetAccessors())))
: propertyDeclaration.WithExpressionBody(ArrowExpressionClause(GetterExpression.ToNewSyntax()))
.WithSemicolonToken(Token(SyntaxKind.SemicolonToken)));
}
/// <summary>
/// Returns a Roslyn syntax for the property.
/// </summary>
/// <param name="makePublic">Controls whether to make the property public or not.</param>
internal PropertyDeclarationSyntax ToSyntax(bool makePublic = false)
{
var declaration = PropertyDeclaration(Type.ToSyntax(), Identifier(Name));
if (makePublic)
{
declaration = declaration.AddModifiers(Token(SyntaxKind.PublicKeyword));
}
declaration = declaration.WithAttributeLists(List(Attributes.Select(x => x.ToSyntax())))
.WithDocumentation(Summary);
if (GetterExpression != null)
{
if (Initializer != null)
{
throw new InvalidOperationException($"{nameof(GetterExpression)} and {nameof(Initializer)} may not be both set for the same {nameof(CSharpProperty)}.");
}
if (HasSetter)
{
throw new InvalidOperationException($"{nameof(GetterExpression)} and {nameof(HasSetter)} may not be both set for the same {nameof(CSharpProperty)}.");
}
declaration = declaration.WithExpressionBody(ArrowExpressionClause(GetterExpression.ToInvocationSyntax()))
.WithSemicolonToken(Token(SyntaxKind.SemicolonToken));
}
else
{
var accessors = new List <SyntaxKind> {
SyntaxKind.GetAccessorDeclaration
};
if (HasSetter)
{
accessors.Add(SyntaxKind.SetAccessorDeclaration);
}
declaration = declaration.WithAccessorList(AccessorList(List(
accessors.Select(x => AccessorDeclaration(x).WithSemicolonToken(Token(SyntaxKind.SemicolonToken))))));
}
if (Initializer != null)
{
declaration = declaration.WithInitializer(EqualsValueClause(Initializer.ToInvocationSyntax()))
.WithSemicolonToken(Token(SyntaxKind.SemicolonToken));
}
return(declaration);
}
public IEnumerable <string> GetNamespaces()
{
foreach (string ns in Type.GetNamespaces())
{
yield return(ns);
}
if (GetterExpression != null)
{
foreach (string ns in GetterExpression.GetNamespaces())
{
yield return(ns);
}
}
}
void SetExpressions()
{
var objParam = Expression.Parameter(typeof(object), "obj");
var getterExpr = GetterExpression.GetBody(Expression.Convert(objParam, TypeAccessor.Type));
var getter = Expression.Lambda <Func <object, object> >(Expression.Convert(getterExpr, typeof(object)), objParam);
Getter = getter.Compile();
var valueParam = Expression.Parameter(typeof(object), "value");
var setterExpr = SetterExpression.GetBody(
Expression.Convert(objParam, TypeAccessor.Type),
Expression.Convert(valueParam, Type));
var setter = Expression.Lambda <Action <object, object> >(setterExpr, objParam, valueParam);
Setter = setter.Compile();
}
void SetExpressions()
{
var objParam = Expression.Parameter(typeof(object), "obj");
var getterExpr = GetterExpression.GetBody(Expression.Convert(objParam, TypeAccessor.Type));
var getter = Expression.Lambda <Func <object, object?> >(Expression.Convert(getterExpr, typeof(object)), objParam);
try
{
Getter = getter.Compile();
}
catch (Exception e)
{
ThrowCompileException(getter, e, true);
}
var valueParam = Expression.Parameter(typeof(object), "value");
if (SetterExpression != null)
{
var setterExpr = SetterExpression.GetBody(
Expression.Convert(objParam, TypeAccessor.Type),
Expression.Convert(valueParam, Type));
var setter = Expression.Lambda <Action <object, object?> >(setterExpr, objParam, valueParam);
try
{
Setter = setter.Compile();
}
catch (Exception e)
{
ThrowCompileException(setter, e, false);
}
}
void ThrowCompileException(Expression expression, Exception e, bool isGetter)
{
string message = String.Format("Failed to compile {0} expression for '{1}'. Expression: {2}",
(isGetter ? "Getter" : "Setter"), this.Name, expression.ToString()
);
throw new InvalidOperationException(message, e);
}
}
