public static void Analyze(SyntaxNodeAnalysisContext context, LocalDeclarationStatementSyntax localDeclaration)
{
if (!localDeclaration.IsConst &&
!localDeclaration.SpanOrTrailingTriviaContainsDirectives())
{
VariableDeclarationSyntax declaration = localDeclaration.Declaration;
if (declaration != null)
{
SeparatedSyntaxList <VariableDeclaratorSyntax> variables = declaration.Variables;
if (variables.Any())
{
StatementSyntax nextStatement = localDeclaration.NextStatement();
if (nextStatement?.SpanOrLeadingTriviaContainsDirectives() == false)
{
SimpleAssignmentExpression assignment;
if (SimpleAssignmentExpression.TryCreate(nextStatement, out assignment) &&
assignment.Left.IsKind(SyntaxKind.IdentifierName))
{
SemanticModel semanticModel = context.SemanticModel;
CancellationToken cancellationToken = context.CancellationToken;
VariableDeclaratorSyntax declarator = FindInitializedVariable((IdentifierNameSyntax)assignment.Left, variables, semanticModel, cancellationToken);
if (declarator != null)
{
EqualsValueClauseSyntax initializer = declarator.Initializer;
ExpressionSyntax value = initializer?.Value;
if (value == null ||
IsDefaultValue(declaration.Type, value, semanticModel, cancellationToken))
{
context.ReportDiagnostic(DiagnosticDescriptors.MergeLocalDeclarationWithAssignment, declarator.Identifier);
if (value != null)
{
context.ReportNode(DiagnosticDescriptors.MergeLocalDeclarationWithAssignmentFadeOut, initializer);
context.ReportToken(DiagnosticDescriptors.MergeLocalDeclarationWithAssignmentFadeOut, assignment.Expression.OperatorToken);
}
context.ReportToken(DiagnosticDescriptors.MergeLocalDeclarationWithAssignmentFadeOut, localDeclaration.SemicolonToken);
context.ReportNode(DiagnosticDescriptors.MergeLocalDeclarationWithAssignmentFadeOut, assignment.Left);
}
}
}
}
}
}
}
}
