/// <summary>
/// This function returns a value of 1 if the argument was a name defined with the & GLOBAL-DEFINE directive;
/// a value of 2 if the argument was passed as an include file parameter;
/// and a value of 3 if the argument was a name defined with the & SCOPED-DEFINE directive.
/// If the argument was not defined and was not an include file parameter, then this function returns a value of 0.
/// </summary>
/// <param name="variableName">Can be a position e.g. "1" or a name e.g. "& name"</param>
/// <returns></returns>
public int GetScopedPreProcVariableDefinedLevel(string variableName)
{
// TODO: this does not work correctly because we can't distinguish between a scope variable on root file and a global variable.
if (string.IsNullOrEmpty(variableName))
{
return(0);
}
if (variableName.Equals("0"))
{
return(2);
}
// &scoped-define variables prevail over preproc parameters passed to the include
if (DefinedPreProcVariables != null && DefinedPreProcVariables.ContainsKey(variableName))
{
return(3);
}
if (ParametersPreProcVariables != null && ParametersPreProcVariables.ContainsKey(variableName))
{
return(2);
}
// search for the value in parent scope
// the global preproc, available to the whole include stack, are defined in the "root" include (which is the compiled program).
var parentInclude = Parent;
while (parentInclude != null)
{
if (parentInclude.DefinedPreProcVariables != null && parentInclude.DefinedPreProcVariables.ContainsKey(variableName))
{
return(1);
}
parentInclude = parentInclude.Parent;
}
return(0);
}
/// <summary>
/// Returns the value of a given preproc variable.
/// </summary>
/// <param name="variableName">Can be a position e.g. "1" or a name e.g. "& name"</param>
/// <returns></returns>
public string GetScopedPreProcVariableValue(string variableName)
{
if (string.IsNullOrEmpty(variableName))
{
return(null);
}
if (variableName.Equals("0"))
{
return(string.IsNullOrEmpty(IncludeFilePath) ? null : Path.GetFileName(IncludeFilePath));
}
// &scoped-define variables prevail over preproc parameters passed to the include
if (DefinedPreProcVariables != null && DefinedPreProcVariables.ContainsKey(variableName))
{
return(DefinedPreProcVariables[variableName]);
}
if (ParametersPreProcVariables != null && ParametersPreProcVariables.ContainsKey(variableName))
{
return(ParametersPreProcVariables[variableName]);
}
// search for the value in parent scope
// the global preproc, available to the whole include stack, are defined in the "root" include (which is the compiled program).
var parentInclude = Parent;
while (parentInclude != null)
{
if (parentInclude.DefinedPreProcVariables != null && parentInclude.DefinedPreProcVariables.ContainsKey(variableName))
{
return(parentInclude.DefinedPreProcVariables[variableName]);
}
parentInclude = parentInclude.Parent;
}
return(null);
}
