private Argument DetermineArgument(ITerm term)
{
Argument argument = null;
if (term.Operator == Modifier.MISSING)
{
argument = new MissingArgument();
}
if (argument == null)
{
argument = definitions.DetermineUniversalArgument(term.Field);
}
if (argument == null)
{
argument = definitions.FindArgument(term.Resource, term.Field);
}
if (argument == null)
{
argument = definitions.GuessArgument(term.Field);
}
return(argument);
}
private static ISignatureInfo ParseSignature(string functionName, ParseContext context, IReadOnlyDictionary <string, string> argumentsDescriptions = null)
{
SignatureInfo info = new SignatureInfo(functionName);
List <IArgumentInfo> signatureArguments = new List <IArgumentInfo>();
// RD data may contain function name(s) without braces
if (context.Tokens.CurrentToken.TokenType == RTokenType.OpenBrace)
{
FunctionCall functionCall = new FunctionCall();
functionCall.Parse(context, context.AstRoot);
for (int i = 0; i < functionCall.Arguments.Count; i++)
{
IAstNode arg = functionCall.Arguments[i];
string argName = null;
string argDefaultValue = null;
bool isEllipsis = false;
bool isOptional = false;
ExpressionArgument expArg = arg as ExpressionArgument;
if (expArg != null)
{
argName = context.TextProvider.GetText(expArg.ArgumentValue);
}
else
{
NamedArgument nameArg = arg as NamedArgument;
if (nameArg != null)
{
argName = context.TextProvider.GetText(nameArg.NameRange);
argDefaultValue = RdText.CleanRawRdText(context.TextProvider.GetText(nameArg.DefaultValue));
}
else
{
MissingArgument missingArg = arg as MissingArgument;
if (missingArg != null)
{
argName = string.Empty;
}
else
{
EllipsisArgument ellipsisArg = arg as EllipsisArgument;
if (ellipsisArg != null)
{
argName = "...";
isEllipsis = true;
}
}
}
}
ArgumentInfo argInfo = new ArgumentInfo(argName);
argInfo.DefaultValue = argDefaultValue;
argInfo.IsEllipsis = isEllipsis;
argInfo.IsOptional = isOptional; // TODO: actually parse
if (argumentsDescriptions != null)
{
string description;
if (argumentsDescriptions.TryGetValue(argName, out description))
{
argInfo.Description = description;
}
}
signatureArguments.Add(argInfo);
}
}
info.Arguments = signatureArguments;
return(info);
}
