public override void Initialize(AnalysisContext context)
{
context.RegisterSyntaxNodeActionInNonGenerated(
c =>
{
var methodCall = (InvocationExpressionSyntax)c.Node;
var methodParameterLookup = new ArrayCovariance.MethodParameterLookup(methodCall, c.SemanticModel);
var argumentMappings = methodCall.ArgumentList.Arguments.Select(argument =>
new KeyValuePair <ArgumentSyntax, IParameterSymbol>(argument,
methodParameterLookup.GetParameterSymbol(argument)))
.ToList();
var methodSymbol = methodParameterLookup.MethodSymbol;
if (methodSymbol == null)
{
return;
}
foreach (var argumentMapping in argumentMappings)
{
if (ArgumentHasDefaultValue(argumentMapping, c.SemanticModel))
{
var argument = argumentMapping.Key;
var parameter = argumentMapping.Value;
c.ReportDiagnostic(Diagnostic.Create(Rule, argument.GetLocation(), parameter.Name));
}
}
},
SyntaxKind.InvocationExpression);
}
public override void Initialize(AnalysisContext context)
{
context.RegisterSyntaxNodeActionInNonGenerated(
c =>
{
var methodCall = (InvocationExpressionSyntax) c.Node;
var methodParameterLookup = new ArrayCovariance.MethodParameterLookup(methodCall, c.SemanticModel);
var argumentMappings = methodCall.ArgumentList.Arguments.Select(argument =>
new KeyValuePair<ArgumentSyntax, IParameterSymbol>(argument,
methodParameterLookup.GetParameterSymbol(argument)))
.ToList();
var methodSymbol = methodParameterLookup.MethodSymbol;
if (methodSymbol == null)
{
return;
}
foreach (var argumentMapping in argumentMappings)
{
if (ArgumentHasDefaultValue(argumentMapping, c.SemanticModel))
{
var argument = argumentMapping.Key;
var parameter = argumentMapping.Value;
c.ReportDiagnostic(Diagnostic.Create(Rule, argument.GetLocation(), parameter.Name));
}
}
},
SyntaxKind.InvocationExpression);
}
public override void Initialize(AnalysisContext context)
{
context.RegisterSyntaxNodeActionInNonGenerated(
c =>
{
var methodCall = (InvocationExpressionSyntax)c.Node;
var methodParameterLookup = new ArrayCovariance.MethodParameterLookup(methodCall, c.SemanticModel);
var argumentParameterMappings = methodCall.ArgumentList.Arguments.Select(argument =>
new KeyValuePair <ArgumentSyntax, IParameterSymbol>(argument,
methodParameterLookup.GetParameterSymbol(argument)))
.ToDictionary(pair => pair.Key, pair => pair.Value);
var methodSymbol = methodParameterLookup.MethodSymbol;
if (methodSymbol == null)
{
return;
}
var parameterNames = argumentParameterMappings.Values
.Select(symbol => symbol.Name)
.Distinct()
.ToList();
var identifierArguments = GetIdentifierArguments(methodCall);
var identifierNames = identifierArguments
.Select(p => p.IdentifierName)
.ToList();
if (!parameterNames.Intersect(identifierNames).Any())
{
return;
}
var methodCallHasIssue = false;
for (var i = 0; !methodCallHasIssue && i < identifierArguments.Count; i++)
{
var identifierArgument = identifierArguments[i];
var identifierName = identifierArgument.IdentifierName;
var parameter = argumentParameterMappings[identifierArgument.ArgumentSyntax];
var parameterName = parameter.Name;
if (string.IsNullOrEmpty(identifierName) ||
!parameterNames.Contains(identifierName))
{
continue;
}
var positional = identifierArgument as PositionalIdentifierArgument;
if (positional != null &&
(parameter.IsParams ||
!identifierNames.Contains(parameterName) ||
identifierName == parameterName))
{
continue;
}
var named = identifierArgument as NamedIdentifierArgument;
if (named != null &&
(!identifierNames.Contains(named.DeclaredName) || named.DeclaredName == named.IdentifierName))
{
continue;
}
methodCallHasIssue = true;
}
if (methodCallHasIssue)
{
var memberAccess = methodCall.Expression as MemberAccessExpressionSyntax;
var reportLocation = memberAccess == null
? methodCall.Expression.GetLocation()
: memberAccess.Name.GetLocation();
c.ReportDiagnostic(Diagnostic.Create(Rule, reportLocation,
methodSymbol.Name));
}
},
SyntaxKind.InvocationExpression);
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
var diagnostic = context.Diagnostics.First();
var invocation = GetInvocation(root, diagnostic.Location.SourceSpan);
if (invocation == null)
{
return;
}
var semanticModel = await context.Document.GetSemanticModelAsync(context.CancellationToken);
var methodParameterLookup = new ArrayCovariance.MethodParameterLookup(invocation, semanticModel);
var argumentMappings = invocation.ArgumentList.Arguments
.Select(argument =>
new KeyValuePair<ArgumentSyntax, IParameterSymbol>(argument,
methodParameterLookup.GetParameterSymbol(argument)))
.ToList();
var methodSymbol = methodParameterLookup.MethodSymbol;
if (methodSymbol == null)
{
return;
}
var argumentsWithDefaultValues = new List<ArgumentSyntax>();
var argumentsCanBeRemovedWithoutNamed = new List<ArgumentSyntax>();
var canBeRemovedWithoutNamed = true;
var reversedMappings =
((IEnumerable<KeyValuePair<ArgumentSyntax, IParameterSymbol>>) argumentMappings).Reverse();
foreach (var argumentMapping in reversedMappings)
{
var argument = argumentMapping.Key;
if (RedundantArgument.ArgumentHasDefaultValue(argumentMapping, semanticModel))
{
argumentsWithDefaultValues.Add(argument);
if (canBeRemovedWithoutNamed)
{
argumentsCanBeRemovedWithoutNamed.Add(argument);
}
}
else
{
if (argument.NameColon == null)
{
canBeRemovedWithoutNamed = false;
}
}
}
if (argumentsCanBeRemovedWithoutNamed.Any())
{
context.RegisterCodeFix(
CodeAction.Create(
TitleRemove,
c => RemoveArguments(context.Document, argumentsCanBeRemovedWithoutNamed, c),
TitleRemove),
context.Diagnostics);
}
var cannotBeRemoved = argumentsWithDefaultValues.Except(argumentsCanBeRemovedWithoutNamed);
if (cannotBeRemoved.Any())
{
context.RegisterCodeFix(
CodeAction.Create(
TitleRemoveWithNameAdditions,
c => RemoveArgumentsAndAddNecessaryNames(context.Document, invocation.ArgumentList,
argumentMappings, argumentsWithDefaultValues, semanticModel, c),
TitleRemoveWithNameAdditions),
context.Diagnostics);
}
}
public override void Initialize(AnalysisContext context)
{
context.RegisterSyntaxNodeAction(
c =>
{
var methodCall = (InvocationExpressionSyntax) c.Node;
var methodParameterLookup = new ArrayCovariance.MethodParameterLookup(methodCall, c.SemanticModel);
var argumentParameterMappings = methodCall.ArgumentList.Arguments.Select(argument =>
new KeyValuePair<ArgumentSyntax, IParameterSymbol>(argument,
methodParameterLookup.GetParameterSymbol(argument)))
.ToDictionary(pair => pair.Key, pair => pair.Value);
var methodSymbol = methodParameterLookup.MethodSymbol;
if (methodSymbol == null)
{
return;
}
var parameterNames = argumentParameterMappings.Values
.Select(symbol => symbol.Name)
.Distinct()
.ToList();
var identifierArguments = GetIdentifierArguments(methodCall);
var identifierNames = identifierArguments
.Select(p => p.IdentifierName)
.ToList();
if (!parameterNames.Intersect(identifierNames).Any())
{
return;
}
var methodCallHasIssue = false;
for (var i = 0; !methodCallHasIssue && i < identifierArguments.Count; i++)
{
var identifierArgument = identifierArguments[i];
var identifierName = identifierArgument.IdentifierName;
var parameter = argumentParameterMappings[identifierArgument.ArgumentSyntax];
var parameterName = parameter.Name;
if (string.IsNullOrEmpty(identifierName) ||
!parameterNames.Contains(identifierName))
{
continue;
}
var positional = identifierArgument as PositionalIdentifierArgument;
if (positional != null &&
(parameter.IsParams ||
!identifierNames.Contains(parameterName) ||
identifierName == parameterName))
{
continue;
}
var named = identifierArgument as NamedIdentifierArgument;
if (named != null &&
(!identifierNames.Contains(named.DeclaredName) || named.DeclaredName == named.IdentifierName))
{
continue;
}
methodCallHasIssue = true;
}
if (methodCallHasIssue)
{
var memberAccess = methodCall.Expression as MemberAccessExpressionSyntax;
var reportLocation = memberAccess == null
? methodCall.Expression.GetLocation()
: memberAccess.Name.GetLocation();
c.ReportDiagnostic(Diagnostic.Create(Rule, reportLocation,
methodSymbol.Name));
}
},
SyntaxKind.InvocationExpression);
}
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var root = await context.Document.GetSyntaxRootAsync(context.CancellationToken).ConfigureAwait(false);
var diagnostic = context.Diagnostics.First();
var invocation = GetInvocation(root, diagnostic.Location.SourceSpan);
if (invocation == null)
{
return;
}
var semanticModel = await context.Document.GetSemanticModelAsync(context.CancellationToken);
var methodParameterLookup = new ArrayCovariance.MethodParameterLookup(invocation, semanticModel);
var argumentMappings = invocation.ArgumentList.Arguments
.Select(argument =>
new KeyValuePair <ArgumentSyntax, IParameterSymbol>(argument,
methodParameterLookup.GetParameterSymbol(argument)))
.ToList();
var methodSymbol = methodParameterLookup.MethodSymbol;
if (methodSymbol == null)
{
return;
}
var argumentsWithDefaultValues = new List <ArgumentSyntax>();
var argumentsCanBeRemovedWithoutNamed = new List <ArgumentSyntax>();
var canBeRemovedWithoutNamed = true;
var reversedMappings =
((IEnumerable <KeyValuePair <ArgumentSyntax, IParameterSymbol> >)argumentMappings).Reverse();
foreach (var argumentMapping in reversedMappings)
{
var argument = argumentMapping.Key;
if (RedundantArgument.ArgumentHasDefaultValue(argumentMapping, semanticModel))
{
argumentsWithDefaultValues.Add(argument);
if (canBeRemovedWithoutNamed)
{
argumentsCanBeRemovedWithoutNamed.Add(argument);
}
}
else if (argument.NameColon == null)
{
canBeRemovedWithoutNamed = false;
}
}
if (argumentsCanBeRemovedWithoutNamed.Any())
{
context.RegisterCodeFix(
CodeAction.Create(
TitleRemove,
c => RemoveArguments(context.Document, argumentsCanBeRemovedWithoutNamed, c),
TitleRemove),
context.Diagnostics);
}
var cannotBeRemoved = argumentsWithDefaultValues.Except(argumentsCanBeRemovedWithoutNamed);
if (cannotBeRemoved.Any())
{
context.RegisterCodeFix(
CodeAction.Create(
TitleRemoveWithNameAdditions,
c => RemoveArgumentsAndAddNecessaryNames(context.Document, invocation.ArgumentList,
argumentMappings, argumentsWithDefaultValues, semanticModel, c),
TitleRemoveWithNameAdditions),
context.Diagnostics);
}
}