private async Task <IEnumerable <SyntaxNode> > CreateStatementsOrInitializerToInsertAtCallSiteAsync(CancellationToken cancellationToken)
{
var selectedNode = this.GetFirstStatementOrInitializerSelectedAtCallSite();
// field initializer, constructor initializer, expression bodied member case
if (selectedNode is ConstructorInitializerSyntax ||
selectedNode is FieldDeclarationSyntax ||
IsExpressionBodiedMember(selectedNode))
{
var statement = await GetStatementOrInitializerContainingInvocationToExtractedMethodAsync(this.CallSiteAnnotation, cancellationToken).ConfigureAwait(false);
return(SpecializedCollections.SingletonEnumerable(statement));
}
// regular case
var semanticModel = this.SemanticDocument.SemanticModel;
var context = this.InsertionPoint.GetContext();
var postProcessor = new PostProcessor(semanticModel, context.SpanStart);
var statements = SpecializedCollections.EmptyEnumerable <StatementSyntax>();
statements = AddSplitOrMoveDeclarationOutStatementsToCallSite(statements, cancellationToken);
statements = postProcessor.MergeDeclarationStatements(statements);
statements = AddAssignmentStatementToCallSite(statements, cancellationToken);
statements = await AddInvocationAtCallSiteAsync(statements, cancellationToken).ConfigureAwait(false);
statements = AddReturnIfUnreachable(statements, cancellationToken);
return(statements);
}
private IEnumerable <StatementSyntax> SplitOrMoveDeclarationIntoMethodDefinition(
IEnumerable <StatementSyntax> statements,
CancellationToken cancellationToken)
{
var semanticModel = this.SemanticDocument.SemanticModel;
var context = this.InsertionPoint.GetContext();
var postProcessor = new PostProcessor(semanticModel, context.SpanStart);
var declStatements = CreateDeclarationStatements(AnalyzerResult.GetVariablesToSplitOrMoveIntoMethodDefinition(cancellationToken), cancellationToken);
declStatements = postProcessor.MergeDeclarationStatements(declStatements);
return(declStatements.Concat(statements));
}