public static ImmutableHashSet <VariableSymbol> GetVariablesToInline(SemanticModel.SemanticModel model)
{
var visitor = new InlineDependencyVisitor(model);
visitor.Visit(model.Root.Syntax);
return(visitor.shouldInlineCache
.Where(kvp => kvp.Value)
.Select(kvp => kvp.Key)
.ToImmutableHashSet());
}
/// <summary>
/// Checks if the specified variable needs to be inlined due to runtime limitations. In cases where the inlining is caused by accessing a variable that must be inlined,
/// the variable access chain is returned. Otherwise, an empty chain is returned.
/// </summary>
/// <param name="model">The semantic model</param>
/// <param name="variable">The variable to check</param>
/// <param name="variableAccessChain">The variable access chain that leads to inlining or empty if not available.</param>
public static bool ShouldInlineVariable(SemanticModel model, VariableDeclarationSyntax variable, out ImmutableArray <string> variableAccessChain)
{
variableAccessChain = ImmutableArray <string> .Empty;
if (model.GetSymbolInfo(variable) is not VariableSymbol variableSymbol)
{
// we have errors - assume this is not meant to be inlined
return(false);
}
var visitor = new InlineDependencyVisitor(model, variable);
visitor.Visit(variable);
if (!visitor.shouldInlineCache.TryGetValue(variableSymbol, out var shouldInline) || shouldInline != Decision.Inline)
{
return(false);
}
variableAccessChain = visitor.capturedSequence?.Reverse().ToImmutableArray() ?? ImmutableArray <string> .Empty;
return(true);
}