public static ImmutableArray <IfAnalysis> Analyze(
StatementListSelection selectedStatements,
IfAnalysisOptions options,
SemanticModel semanticModel,
CancellationToken cancellationToken)
{
if (selectedStatements.Count != 2)
{
return(Empty);
}
StatementSyntax[] statements = selectedStatements.ToArray();
StatementSyntax statement1 = statements[0];
StatementSyntax statement2 = statements[1];
if (statement1.ContainsDiagnostics)
{
return(Empty);
}
if (statement2.ContainsDiagnostics)
{
return(Empty);
}
SyntaxKind kind1 = statement1.Kind();
SyntaxKind kind2 = statement2.Kind();
if (kind1 == SyntaxKind.IfStatement)
{
if (kind2 == SyntaxKind.ReturnStatement)
{
var ifStatement = (IfStatementSyntax)statement1;
if (ifStatement.IsSimpleIf())
{
return(Analyze(ifStatement, (ReturnStatementSyntax)statement2, options, semanticModel, cancellationToken));
}
}
}
else if (options.UseConditionalExpression)
{
if (kind1 == SyntaxKind.LocalDeclarationStatement)
{
if (kind2 == SyntaxKind.IfStatement)
{
return(Analyze((LocalDeclarationStatementSyntax)statement1, (IfStatementSyntax)statement2, options, semanticModel, cancellationToken));
}
}
else if (kind1 == SyntaxKind.ExpressionStatement &&
kind2 == SyntaxKind.IfStatement)
{
return(Analyze((ExpressionStatementSyntax)statement1, (IfStatementSyntax)statement2, options, semanticModel, cancellationToken));
}
}
return(Empty);
}
public Task <Document> RefactorAsync(
Document document,
StatementListSelection selectedStatements,
CancellationToken cancellationToken = default)
{
StatementSyntax[] statements = selectedStatements.ToArray();
int index = selectedStatements.FirstIndex;
SyntaxTriviaList leadingTrivia = statements[0].GetLeadingTrivia();
SyntaxTriviaList trailingTrivia = statements[statements.Length - 1].GetTrailingTrivia();
statements[0] = statements[0].WithLeadingTrivia();
statements[statements.Length - 1] = statements[statements.Length - 1].WithTrailingTrivia();
SyntaxList <StatementSyntax> newStatements = selectedStatements.UnderlyingList;
int cnt = statements.Length;
while (cnt > 0)
{
newStatements = newStatements.RemoveAt(index);
cnt--;
}
TStatement statement = CreateStatement(statements.ToImmutableArray());
statement = statement
.WithLeadingTrivia(leadingTrivia)
.WithTrailingTrivia(trailingTrivia)
.WithFormatterAnnotation();
newStatements = newStatements.Insert(index, statement);
return(document.ReplaceStatementsAsync(SyntaxInfo.StatementListInfo(selectedStatements), newStatements, cancellationToken));
}
