private static void ComputeCodeFix(
CodeFixContext context,
Diagnostic diagnostic,
ExpressionSyntax expression,
VariableDeclaratorSyntax variableDeclarator,
SemanticModel semanticModel)
{
if (!(variableDeclarator.Parent is VariableDeclarationSyntax variableDeclaration))
{
return;
}
TypeSyntax type = variableDeclaration.Type;
if (type == null)
{
return;
}
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(expression, context.CancellationToken);
if ((variableDeclaration.Parent is FieldDeclarationSyntax fieldDeclaration) &&
fieldDeclaration.Modifiers.Contains(SyntaxKind.ConstKeyword) &&
typeSymbol?.SupportsConstantValue() != true)
{
return;
}
if (typeSymbol?.SupportsExplicitDeclaration() == true)
{
CodeFixRegistrator.ChangeType(context, diagnostic, type, typeSymbol, semanticModel, CodeFixIdentifiers.ChangeTypeAccordingToInitializer);
if (typeSymbol.OriginalDefinition.EqualsOrInheritsFromTaskOfT(semanticModel))
{
ISymbol enclosingSymbol = semanticModel.GetEnclosingSymbol(variableDeclaration.SpanStart, context.CancellationToken);
if (enclosingSymbol.IsAsyncMethod())
{
ITypeSymbol typeArgument = ((INamedTypeSymbol)typeSymbol).TypeArguments[0];
ChangeTypeAndAddAwait(context, diagnostic, expression, variableDeclaration, type, typeArgument, semanticModel);
}
}
}
if (variableDeclaration.IsParentKind(SyntaxKind.LocalDeclarationStatement, SyntaxKind.UsingStatement))
{
CodeFixRegistrator.ChangeTypeToVar(context, diagnostic, type, CodeFixIdentifiers.ChangeTypeToVar);
}
}
private static void ComputeCodeFix(
CodeFixContext context,
Diagnostic diagnostic,
ExpressionSyntax expression,
VariableDeclaratorSyntax variableDeclarator,
SemanticModel semanticModel)
{
if (!(variableDeclarator.Parent is VariableDeclarationSyntax variableDeclaration))
{
return;
}
TypeSyntax type = variableDeclaration.Type;
if (type == null)
{
return;
}
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(expression, context.CancellationToken);
if ((variableDeclaration.Parent is FieldDeclarationSyntax fieldDeclaration) &&
fieldDeclaration.Modifiers.Contains(SyntaxKind.ConstKeyword) &&
typeSymbol?.SupportsConstantValue() != true)
{
return;
}
if (typeSymbol?.SupportsExplicitDeclaration() == true)
{
CodeFixRegistrator.ChangeType(context, diagnostic, type, typeSymbol, semanticModel, CodeFixIdentifiers.ChangeTypeAccordingToInitializer);
ComputeChangeTypeAndAddAwait(context, diagnostic, variableDeclaration, type, expression, typeSymbol, semanticModel);
}
if (variableDeclaration.IsParentKind(SyntaxKind.LocalDeclarationStatement, SyntaxKind.UsingStatement))
{
CodeFixRegistrator.ChangeTypeToVar(context, diagnostic, type, CodeFixIdentifiers.ChangeTypeToVar);
}
}
public static void ComputeCodeFix(
CodeFixContext context,
Diagnostic diagnostic,
ExpressionSyntax expression,
SemanticModel semanticModel)
{
if (!(expression.Parent is EqualsValueClauseSyntax equalsValueClause))
{
return;
}
if (equalsValueClause.Parent is VariableDeclaratorSyntax variableDeclarator)
{
if (!(variableDeclarator.Parent is VariableDeclarationSyntax variableDeclaration))
{
return;
}
TypeSyntax type = variableDeclaration.Type;
if (type != null)
{
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(expression, context.CancellationToken);
if ((variableDeclaration.Parent is FieldDeclarationSyntax fieldDeclaration) &&
fieldDeclaration.Modifiers.Contains(SyntaxKind.ConstKeyword) &&
typeSymbol?.SupportsConstantValue() != true)
{
return;
}
if (typeSymbol?.SupportsExplicitDeclaration() == true)
{
CodeFixRegistrator.ChangeType(context, diagnostic, type, typeSymbol, semanticModel, CodeFixIdentifiers.ChangeTypeAccordingToInitializer);
if (typeSymbol.IsConstructedFromTaskOfT(semanticModel))
{
ISymbol enclosingSymbol = semanticModel.GetEnclosingSymbol(variableDeclaration.SpanStart, context.CancellationToken);
if (enclosingSymbol.IsAsyncMethod())
{
ITypeSymbol typeArgument = ((INamedTypeSymbol)typeSymbol).TypeArguments[0];
ChangeTypeAndAddAwait(context, diagnostic, expression, variableDeclaration, type, typeArgument, semanticModel);
}
}
}
if (variableDeclaration.IsParentKind(SyntaxKind.LocalDeclarationStatement, SyntaxKind.UsingStatement))
{
CodeFixRegistrator.ChangeTypeToVar(context, diagnostic, type, CodeFixIdentifiers.ChangeTypeToVar);
}
}
}
else if (equalsValueClause.Parent is PropertyDeclarationSyntax propertyDeclaration)
{
TypeSyntax type = propertyDeclaration.Type;
if (type != null)
{
ITypeSymbol typeSymbol = semanticModel.GetTypeSymbol(expression, context.CancellationToken);
if (typeSymbol?.SupportsExplicitDeclaration() == true)
{
ISymbol symbol = semanticModel.GetDeclaredSymbol(propertyDeclaration, context.CancellationToken);
if (symbol?.IsOverride == false &&
!symbol.ImplementsInterfaceMember())
{
CodeFixRegistrator.ChangeType(context, diagnostic, type, typeSymbol, semanticModel, CodeFixIdentifiers.ChangeTypeAccordingToInitializer);
}
}
}
}
else
{
Debug.Fail(equalsValueClause.Parent.Kind().ToString());
}
}