/// <summary>
/// All binding methods eventually call this one so all checks are performed here
/// If the given scalar binding is null the scalar macro parameter is un-bound
/// </summary>
/// <param name="valueAccess"></param>
/// <param name="scalarBinding"></param>
/// <returns></returns>
public GMacMacroBinding BindScalarToPattern(AstDatastoreValueAccess valueAccess, GMacScalarBinding scalarBinding)
{
if (valueAccess.IsNullOrInvalid())
{
throw new ArgumentNullException(nameof(valueAccess));
}
var valueAccessName = valueAccess.ValueAccessName;
if (valueAccess.IsMacroParameter == false || valueAccess.IsScalar == false)
{
throw new InvalidOperationException(
$"Unable to bind the value access {valueAccessName} as it's either non-scalar or not a macro parameter"
);
}
if (scalarBinding == null)
{
return(UnBind(valueAccess));
}
if (valueAccess.AssociatedValueAccess.RootSymbol.ParentLanguageSymbol.ObjectId != AssociatedMacro.ObjectId)
{
throw new InvalidOperationException(
$"Unable to bind the value access {valueAccessName} as it's not a peremeter of the macro {AssociatedMacro.SymbolAccessName}"
);
}
GMacMacroParameterBinding paramBinding = null;
if (valueAccess.IsOutputParameter && scalarBinding.IsConstant)
{
switch (BindOutputToConstantBehavior)
{
case GMacBindOutputToConstantBehavior.Prevent:
throw new InvalidOperationException(
$"Unable to bind the output macro parameter {valueAccessName} to a constant"
);
case GMacBindOutputToConstantBehavior.Ignore:
return(this);
case GMacBindOutputToConstantBehavior.BindToVariable:
paramBinding = GMacMacroParameterBinding.CreateVariable(valueAccess);
break;
}
}
else
{
paramBinding = GMacMacroParameterBinding.Create(valueAccess, scalarBinding);
}
//If the value access already exists remove it from the dictionary to preserve
//order of parameters bindings
if (_patternDictionary.ContainsKey(valueAccessName))
{
_patternDictionary.Remove(valueAccessName);
}
_patternDictionary.Add(valueAccessName, paramBinding);
return(this);
}
/// <summary>
/// Try to find the scalar macro parameter binding pattern associated with the given primitive parameter
/// value access component
/// </summary>
/// <param name="paramValueAccess"></param>
/// <param name="pattern"></param>
/// <returns></returns>
public bool TryGetBinding(AstDatastoreValueAccess paramValueAccess, out GMacMacroParameterBinding pattern)
{
return(_patternDictionary.TryGetValue(paramValueAccess.ValueAccessName, out pattern));
}
