private static MethodDeclarationSyntax GenerateMethodDeclaration()
{
return(MethodDeclaration(
Modifiers.Protected_Virtual(),
PredefinedBoolType(),
Identifier("ShouldVisit"),
ParameterList(Parameter(IdentifierName("IPropertySymbol"), "propertySymbol")),
Block(
SwitchStatement(
SimpleMemberAccessExpression(
SimpleMemberAccessExpression(
IdentifierName("propertySymbol"),
IdentifierName("ContainingType")),
IdentifierName("Name")),
GenerateSections().ToSyntaxList().Add(DefaultSwitchSection(Block(ThrowNewInvalidOperationException(ParseExpression(@"$""Unrecognized type '{propertySymbol.ContainingType.Name}'""")))))))));
IEnumerable <SwitchSectionSyntax> GenerateSections()
{
foreach (INamedTypeSymbol typeSymbol in Symbols.SyntaxSymbols)
{
if (typeSymbol.IsAbstract)
{
continue;
}
SyntaxList <SwitchSectionSyntax> sections = default;
foreach (IGrouping <bool, IPropertySymbol> grouping in Symbols.GetPropertySymbols(typeSymbol, skipObsolete: false)
.GroupBy(f => f.HasAttribute(MetadataNames.System_ObsoleteAttribute) ||
(typeSymbol.Name == "AnonymousMethodExpressionSyntax" && f.Name == "Block"))
.OrderBy(f => f.Key))
{
if (!grouping.Key)
{
sections = sections.Add(SwitchSection(GenerateLabels(grouping).ToSyntaxList(), ReturnStatement(TrueLiteralExpression())));
}
else
{
sections = sections.Add(SwitchSection(GenerateLabels(grouping).ToSyntaxList(), ReturnStatement(FalseLiteralExpression())));
}
}
Debug.Assert(sections.Any());
sections = sections.Add(DefaultSwitchSection(ThrowNewInvalidOperationException(ParseExpression(@"$""Unrecognized property '{propertySymbol.Name}'"""))));
yield return(SwitchSection(
CaseSwitchLabel(StringLiteralExpression(typeSymbol.Name)),
Block(
SwitchStatement(
SimpleMemberAccessExpression(IdentifierName("propertySymbol"), IdentifierName("Name")),
sections))));
}
IEnumerable <SwitchLabelSyntax> GenerateLabels(IEnumerable <IPropertySymbol> propertySymbols)
{
foreach (IPropertySymbol propertySymbol in propertySymbols)
{
yield return(CaseSwitchLabel(StringLiteralExpression(propertySymbol.Name)));
}
}
}
}