/// <inheritdoc />
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var editor = new MemberInvocationCodeFixHelper(context);
var invocation = await editor.GetDiagnosedInvocation();
if (invocation == null)
{
return;
}
const string namespacesToBeReferenced = "System";
var tempInvocation = invocation;
var stringComparisonOptions = StringComparisonOptions.GetAll();
// if it was diagnosed and overload with three or six arguments is called it must be:
// public static int Compare(string strA, string strB, bool ignoreCase)
// OR
// public static int Compare(string strA, int indexA, string strB, int indexB, int length, bool ignoreCase)
// therefore we will apply only suitable fixes
var originalArguments = invocation.ArgumentList.Arguments;
if (originalArguments.Count == 3 || originalArguments.Count == 6)
{
var ignoreCaseAttribute = originalArguments.Last().Expression.ToString();
bool ignoreCase;
if (!bool.TryParse(ignoreCaseAttribute, out ignoreCase))
{
// could not detect value of 'ignoreCase' argument -> no codefix provided
return;
}
// delete last argument of the previous invocation
tempInvocation = tempInvocation.WithArgumentList(SyntaxFactory.ArgumentList(originalArguments.RemoveAt(originalArguments.Count - 1)));
stringComparisonOptions = ignoreCase
? StringComparisonOptions.GetCaseInsensitive()
: StringComparisonOptions.GetCaseSensitive();
}
foreach (var stringComparisonOption in stringComparisonOptions)
{
var newInvocation = tempInvocation.AppendArguments(stringComparisonOption);
context.RegisterCodeFix(
CodeAction.Create(
title: CodeFixMessagesProvider.GetReplaceWithMessage(newInvocation),
createChangedDocument:
c => editor.ReplaceExpressionWith(invocation, newInvocation, c, namespacesToBeReferenced),
equivalenceKey: $"{nameof(StringCompareStaticMethodCodeFixProvider)}-{stringComparisonOption}"),
context.Diagnostics.First());
}
}
/// <inheritdoc />
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var editor = new MemberInvocationCodeFixHelper(context);
var invocation = await editor.GetDiagnosedInvocation();
if (!IsFixable(invocation))
{
return;
}
var memberAccess = (MemberAccessExpressionSyntax)invocation.Expression;
if (IsChainedMemberAccesses(memberAccess))
{
// if this is the case, we cannot apply codefix directly as it is a static method call
// new variable needs to be introduced to keep the result of the call
// this variable would be later used in member access chain
return;
}
const string namespacesToBeReferenced = "System";
var firstString = SyntaxFactory.Argument(memberAccess.Expression);
var secondString = invocation.ArgumentList.Arguments.First();
var staticInvocation = SyntaxFactory.ParseExpression("string.Compare()") as InvocationExpressionSyntax;
foreach (var stringComparisonOption in StringComparisonOptions.GetAll())
{
var newInvocation = staticInvocation.AppendArguments(firstString, secondString).AppendArguments(stringComparisonOption);
context.RegisterCodeFix(
CodeAction.Create(
title: CodeFixMessagesProvider.GetReplaceWithMessage(newInvocation),
createChangedDocument: c => editor.ReplaceExpressionWith(invocation, newInvocation, c, namespacesToBeReferenced),
equivalenceKey: $"{nameof(StringCompareToMethodCodeFixProvider)}-{stringComparisonOption}"),
context.Diagnostics.First());
}
}
/// <inheritdoc />
public sealed override async Task RegisterCodeFixesAsync(CodeFixContext context)
{
var editor = new MemberInvocationCodeFixHelper(context);
var invocation = await editor.GetDiagnosedInvocation();
if (invocation == null)
{
return;
}
const string namespacesToBeReferenced = "System";
foreach (var stringComparisonOption in StringComparisonOptions.GetAll())
{
var newInvocation = invocation.AppendArguments(stringComparisonOption);
context.RegisterCodeFix(
CodeAction.Create(
title: CodeFixMessagesProvider.GetReplaceWithMessage(newInvocation),
createChangedDocument: c => editor.ReplaceExpressionWith(invocation, newInvocation, c, namespacesToBeReferenced),
equivalenceKey: $"{nameof(StringComparisonMethodsWithModifierCodeFixProvider)}-{stringComparisonOption}"),
context.Diagnostics.First());
}
}