private static InvocationExpressionSyntax ReplaceInvocationsInArguments(
InvocationExpressionSyntax invocation,
InvocationReplacer replacer)
{
var newArguments = new SeparatedSyntaxList <ArgumentSyntax>();
foreach (var argument in invocation.ArgumentList.Arguments)
{
var newArgument = (ArgumentSyntax)argument.Accept(replacer);
newArguments = newArguments.Add(newArgument);
}
return(SyntaxFactory.InvocationExpression(
invocation.Expression,
SyntaxFactory.ArgumentList(newArguments)));
}
private static InvocationExpressionSyntax SplitFunctionComposition(
InvocationExpressionSyntax selectInvocation,
SimpleLambdaExpressionSyntax projection,
InvocationExpressionSyntax[] invocationStack,
SemanticModel semanticModel)
{
var lambdaParameter = projection.Parameter;
var parameterName = lambdaParameter.Identifier.Text;
var parameterSymbol = semanticModel.GetDeclaredSymbol(lambdaParameter);
Func <InvocationExpressionSyntax, bool> isNeedToReplaceInvocation = i =>
DataFlowAnalysisHelper.IsIdentifierReferencedIn(
parameterName,
parameterSymbol,
semanticModel,
i);
var newSelectInvocation = ExtendedSyntaxFactory.MakeInvocationWithLambdaArgument(
selectInvocation.Expression,
lambdaParameter,
invocationStack[0]);
var invocationReplacer = new InvocationReplacer(
isNeedToReplaceInvocation,
SyntaxFactory.IdentifierName(parameterName));
for (int i = 1; i < invocationStack.Length; ++i)
{
var innerInvocation = invocationStack[i];
var processedInnerInvocation = ReplaceInvocationsInArguments(
innerInvocation,
invocationReplacer);
var memberAccess = SyntaxFactory.MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
newSelectInvocation,
SyntaxFactory.IdentifierName(LinqHelper.SelectMethodName));
newSelectInvocation = ExtendedSyntaxFactory.MakeInvocationWithLambdaArgument(
memberAccess,
lambdaParameter,
processedInnerInvocation);
}
return(newSelectInvocation.WithTriviaFrom(selectInvocation));
}