private string ResolveMacros(string source, IEnumerable <string> restrictedDefines, IEnumerable <PreprocessorDefine> args,
FileContext serverContext, ContentType contentType)
{
var reader = new StringPreprocessorReader(source);
var writer = new StringPreprocessorWriter();
var parms = new PreprocessorParams(reader, writer, string.Empty, null, serverContext, contentType, null);
parms.restrictedDefines = restrictedDefines;
parms.args = args;
parms.resolvingMacros = true;
var lastText = source;
var counter = 32; // To prevent infinite loop with recursive define
while (Preprocess(parms).DocumentAltered&& counter <= 32)
{
var newText = writer.Text;
if (newText == lastText)
{
break;
}
lastText = newText;
parms.result.DocumentAltered = false;
parms.args = null; // Only apply the arguments to the first round
parms.reader = new StringPreprocessorReader(newText);
parms.writer = writer = new StringPreprocessorWriter();
counter++;
}
return(writer.Text);
}
private ConditionResult EvaluateCondition(PreprocessorParams p, string conditionStr, string fileName, int pos)
{
// Run preprocessor on the condition string
var reader = new StringPreprocessorReader(conditionStr);
var writer = new StringPreprocessorWriter();
var parms = new PreprocessorParams(reader, writer, string.Empty, null, p.fileContext, ContentType.Condition, null);
parms.allowDirectives = false;
parms.args = p.args;
Preprocess(parms);
// Evaluate the condition string
var parser = new CodeParser(writer.Text);
var tokenGroup = PreprocessorTokens.GroupToken.Parse(null, parser, null);
var finalValue = tokenGroup.Value;
ConditionResult ret;
if (finalValue.HasValue)
{
if (finalValue.Value != 0)
{
ret = ConditionResult.Positive;
}
else
{
ret = ConditionResult.Negative;
}
}
else
{
#if DEBUG
Log.Debug("Condition returned indeterminate: {0}\r\n File Name: {1}\r\n Position: {2}\r\n Resolved: {3}",
conditionStr, fileName, pos, writer.Text);
#endif
ret = ConditionResult.Indeterminate;
}
return(ret);
}