TreeNode LinkUndefinedVariable(UndefinedVariableTreeNode vTree, CalculationContext context, string[] parameterNames)
{
for (int i = 0; i < parameterNames.Length; ++i)
{
if (vTree.Name == parameterNames[i])
{
return(new FunctionParameterTreeNode(i));
}
}
if (context.VariableTable.IsIdentifierDefined(vTree.Name))
{
// can't optimize to ternary expression, idk why
if (InsertVariableValuesDirectly)
{
return(new NumberTreeNode(context.VariableTable[vTree.Name], vTree.Parent));
}
else
{
return(new VariableIndexTreeNode(context.VariableTable.GetIndex(vTree.Name), vTree.Parent));
}
}
throw new Exception(String.Format("Variable \"{0}\" is not defined", vTree.Name));
}
static void DefineVariableInput(UndefinedVariableTreeNode vDefinition, string expressionInput, CalculationContext context)
{
Token[] tokens = lexer.Tokenize(expressionInput);
TreeNode tree = parser.Construct(tokens);
FinishedFunction function = linker.BuildFunction(tree, context, new string[0]);
double value = treeCalculator.Calculate(function);
context.VariableTable.AssignItem(vDefinition.Name, value);
}