| public static FindContextualArgument ( string previousToken, CommandLineAction contextualAction, CommandLineArgumentsDefinition def = null ) : System.CommandLineArgument | ||
| previousToken | string | The token to inspect. If you pass null you will get null back. |
| contextualAction | CommandLineAction | An action to inspect for a match if the current token does not match a global argument. Pass null to only check global arguments. |
| def | CommandLineArgumentsDefinition | The definition to inspect. If null, the ambient definition will be used. If there is no ambient definition and null is passed then this method throws a NullReferenceException. |
| return | System.CommandLineArgument | |
public static CommandLineArgument FindContextualArgument(string previousToken, CommandLineAction contextualAction, CommandLineArgumentsDefinition def = null)
{
def = PassThroughOrTryGetAmbientDefinition(def);
if (previousToken == null)
{
return null;
}
string currentTokenArgumentNameValue = null;
if (previousToken.StartsWith("-"))
{
currentTokenArgumentNameValue = previousToken.Substring(1);
}
else if (previousToken.StartsWith("/"))
{
currentTokenArgumentNameValue = previousToken.Substring(1);
}
CommandLineArgument currentTokenArgument = null;
if (currentTokenArgumentNameValue != null)
{
currentTokenArgument = def.Arguments.Where(arg => arg.IsMatch(currentTokenArgumentNameValue) && arg.ArgumentType != typeof(bool)).SingleOrDefault();
if (currentTokenArgument == null && contextualAction != null)
{
currentTokenArgument = contextualAction.Arguments.Where(arg => arg.IsMatch(currentTokenArgumentNameValue) && arg.ArgumentType != typeof(bool)).SingleOrDefault();
}
}
return currentTokenArgument;
}
public bool ShouldBeHighlighted(RichCommandLineContext readerContext, HighlighterContext highlighterContext)
{
// don't even try mark tokens as invalid unless the cursor is on it
if (readerContext.BufferPosition >= highlighterContext.CurrentToken.StartIndex && readerContext.BufferPosition < highlighterContext.CurrentToken.EndIndex)
{
return(false);
}
var currentToken = highlighterContext.CurrentToken.Value;
var previousToken = PowerArgsRichCommandLineReader.FindPreviousNonWhitespaceToken(readerContext, highlighterContext);
var firstToken = readerContext.Tokens[0].Value;
CommandLineAction contextualAction = PowerArgsRichCommandLineReader.FindContextualAction(firstToken, definition);
CommandLineArgument contextualArgument = PowerArgsRichCommandLineReader.FindContextualArgument(previousToken, contextualAction, definition);
if (contextualArgument != null)
{
if (contextualArgument.TestIsValidAndRevivable(currentToken) == false)
{
// the current token either failed validation or could not be revived
return(true);
}
}
bool expectMatchingArg;
CommandLineArgument currentTokenArgument = PowerArgsRichCommandLineReader.FindCurrentTokenArgument(contextualAction, currentToken, out expectMatchingArg, definition);
if (currentTokenArgument == null && expectMatchingArg)
{
// The current token starts with a - or /, but does not match a global or action specific argument, so we'll highlight the token red
return(true);
}
return(false);
}
