/// <summary>
/// Parses the first matching item.
/// </summary>
public static TParser ParseFirst <TParser>(this Parser <LexicalToken, TParser> parser, LexicalToken[] tokens)
{
var source = new ArraySource <LexicalToken>(tokens);
var result = parser.Parse(source, 0);
return(result.Value);
}
/// <summary>
/// Repeatedly parses all matching items.
/// </summary>
public static IEnumerable <TParser> ParseAll <TParser>(this Parser <LexicalToken, TParser> parser, LexicalToken[] tokens)
{
var source = new ArraySource <LexicalToken>(tokens);
var start = 0;
while (!source.IsEnd(start))
{
var result = parser.Parse(source, start);
if (result.Length <= 0)
{
break;
}
yield return(result.Value);
start += result.Length;
}
}
/// <summary>
/// Scans the first matching item.
/// </summary>
public static int ScanFirst(this Parser <LexicalToken> parser, string text, bool alwaysProduceEOF = false)
{
var source = new ArraySource <LexicalToken>(LexicalGrammar.GetTokens(text, alwaysProduceEOF));
return(parser.Scan(source, 0));
}