public static bool RemoveUnusedVariables(BlockNode block)
{
var usedvariables = block.GetReadVariables().ToArray();
var changesmade = false;
var i = 0;
foreach (var node in block.GetChildren().ToList())
{
if (node is VariableDeclarationNode dec)
{
if (!usedvariables.Contains(dec.VariableName))
{
block.RemoveChild(i--);
changesmade = true;
}
}
else if (node is VariableAssignmentNode assignment)
{
if (!usedvariables.Contains(assignment.VariableName))
{
block.RemoveChild(i--);
changesmade = true;
}
}
i++;
}
return(changesmade);
}
