private static ImmutableArray<SyntaxKind> Fill(Array values, SyntaxKind[] exclude)
{
Requires.NotNull(values, nameof(values));
Requires.NotNull(exclude, nameof(exclude));
var SyntaxKinds = ImmutableArray.CreateBuilder<SyntaxKind>(values.Length);
foreach (SyntaxKind SyntaxKind in values)
{
if (!exclude.Contains(SyntaxKind))
{
SyntaxKinds.Add(SyntaxKind);
}
}
return SyntaxKinds.ToImmutable();
}
public PropertyDeclarationSyntax Convert(MethodDeclarationSyntax method, SemanticModel semanticModel = null)
{
if (method.Body == null && method.ExpressionBody != null && AreAllParentClassesPartial(method))
{
ISymbol methodSymbol = null;
if (semanticModel != null)
{
methodSymbol = semanticModel.GetDeclaredSymbol(method);
}
var parentClass = (method.Parent as ClassDeclarationSyntax);
var methodIsStatic = method.Modifiers.Any(SyntaxKind.StaticKeyword);
var funcParamTypes =
(
methodIsStatic
? new TypeSyntax[] { }
: Enumerable.Repeat(GetTypeOfClass(parentClass), 1)
).Union(
method.ParameterList.Parameters.AsEnumerable()
.Select(p => p.Type.WithoutTrailingTrivia())
)
.Union(
Enumerable.Repeat(method.ReturnType.WithoutTrailingTrivia(), 1)
);
var funcTypesSeperatedList = SyntaxFactory.SeparatedList <TypeSyntax>(funcParamTypes);
var funcTypedArgumentList = SyntaxFactory.TypeArgumentList(funcTypesSeperatedList);
var funcIdentifier = SyntaxFactory.Identifier("Func");
var funcType = SyntaxFactory.GenericName(funcIdentifier, funcTypedArgumentList);
var expressionIdentifier = SyntaxFactory.Identifier("Expression");
var expressionTypesSeperatedList = SyntaxFactory.SeparatedList <TypeSyntax>(Enumerable.Repeat(funcType, 1));
var expressionTypedArgumentList = SyntaxFactory.TypeArgumentList(expressionTypesSeperatedList);
var expressionType = SyntaxFactory.GenericName(expressionIdentifier, expressionTypedArgumentList).WithTriviaFrom(method.ReturnType);
var lambdaParameters =
SyntaxFactory.ParameterList(
methodIsStatic
? RemoveThisFromExtensionMethod(method)
: BuildStaticParamsWith_this(method, parentClass)
).WithTrailingTrivia(SyntaxFactory.Space);
var methodExpression = (CSharpSyntaxNode) new ThisOrImplicitThisTo_ThisRewriter(semanticModel, methodSymbol).Visit(method.ExpressionBody.Expression).WithLeadingTrivia(method.ExpressionBody.Expression.GetLeadingTrivia());
var lamdaExpression = SyntaxFactory.ParenthesizedLambdaExpression(
SyntaxFactory.Token(SyntaxKind.None),
lambdaParameters.WithLeadingTrivia(SyntaxFactory.CarriageReturn, SyntaxFactory.LineFeed, method.GetLeadingTrivia().Last()),
method.ExpressionBody.ArrowToken,
methodExpression);
var propertyExpressionBody = SyntaxFactory.ArrowExpressionClause
(
SyntaxFactory.Token(SyntaxKind.EqualsGreaterThanToken),
lamdaExpression
);
var kindsToRemove = new SyntaxKind[] { SyntaxKind.VirtualKeyword, SyntaxKind.NewKeyword, SyntaxKind.OverrideKeyword };
var modifiers =
SyntaxFactory.TokenList(method.Modifiers.Where(t => !kindsToRemove.Contains(t.Kind())));
if (!modifiers.Any(SyntaxKind.StaticKeyword))
{
modifiers = SyntaxFactory.TokenList(modifiers.Union(Enumerable.Repeat(SyntaxFactory.Token(SyntaxKind.StaticKeyword).WithTrailingTrivia(SyntaxFactory.Space), 1)));
}
var propertyDec = SyntaxFactory.PropertyDeclaration(
method.AttributeLists,
modifiers,
expressionType,
null,
SyntaxFactory.Identifier(method.Identifier.Text + "_Expression").WithTrailingTrivia(SyntaxFactory.Space),
null,
propertyExpressionBody,
null,
SyntaxFactory.Token(SyntaxKind.SemicolonToken).WithTrailingTrivia(SyntaxFactory.CarriageReturn, SyntaxFactory.LineFeed)
).WithLeadingTrivia(method.GetLeadingTrivia().Last());
return(propertyDec);
}
else
{
return(null);
}
}