/// <summary>
/// Initializes a new instance of the <see cref="Eto.Parse.Grammar"/> class
/// </summary>
/// <param name="name">Name of the grammar</param>
/// <param name="rule">Top level grammar rule</param>
public Grammar(string name = null, Parser rule = null)
: base(name, rule)
{
CaseSensitive = true;
EnableMatchEvents = true;
Optimizations = GrammarOptimizations.CharacterSetAlternations;
}
public RepeatParser(Parser inner, int minimum, int maximum = Int32.MaxValue, Parser until = null)
: base(null, inner)
{
this.Minimum = minimum;
this.Maximum = maximum;
this.Until = until;
Separator = DefaultSeparator;
}
public UntilParser(Parser inner, int minimum, int maximum = Int32.MaxValue, bool skip = false, bool capture = false)
: base(null, inner)
{
this.Minimum = minimum;
this.Maximum = maximum;
this.Capture = capture;
this.Skip = skip;
}
public Parser Replace(Parser parser)
{
if (parser == null)
return null;
if (ReferenceEquals(parser, SearchParser))
{
Debug.WriteLine("Replacing {0} with {1}", SearchParser, ReplaceParser);
return ReplaceParser;
}
parser.Replace(this);
return parser;
}
public Parser Clone(Parser parser)
{
if (parser == null)
return null;
Parser newParser;
if (!clones.TryGetValue(parser, out newParser))
{
newParser = parser.Clone(this);
clones[parser] = newParser;
}
return newParser;
}
public override void Initialize(ParserInitializeArgs args)
{
base.Initialize(args);
if (args.Push(this))
{
if (Separator != null)
Separator.Initialize(args);
if (Until != null)
Until.Initialize(args);
separator = Separator ?? args.Grammar.Separator;
skipUntilMatches = (Until != null && (Until.Name != null || Until.Children().Any(r => r.Name != null)));
args.Pop();
}
}
public string GenerateName(Parser parser, string name = null)
{
string cachedName;
if (!objectNames.TryGetValue(parser, out cachedName))
{
if (name != null)
{
cachedName = name;
var count = 1;
while (objectNames.Values.Contains(cachedName))
{
cachedName = name + count++;
}
}
else
cachedName = GenerateName(parser.GetType());
objectNames[parser] = cachedName;
}
return cachedName;
}
public ParserContainsArgs(Parser parser)
{
this.Parser = parser;
}
public string Write(Parser parser)
{
return Writer.WriteParser(this, parser);
}
public void Push(Parser parser)
{
Parsers.Push(parser);
Level += 1;
}
public void Add(Parser parser, Parser newParser)
{
clones.Add(parser, newParser);
}
/// <summary>
/// Adds an error for the specified parser at the current position
/// </summary>
/// <param name="parser">Parser to add the error for</param>
public void AddError(Parser parser)
{
var pos = Scanner.Position;
if (pos > errorIndex)
{
errorIndex = pos;
errors.Clear();
errors.Add(parser);
}
else if (pos == errorIndex)
{
errors.Add(parser);
}
if (pos > childErrorIndex)
childErrorIndex = pos;
}
public UnaryParser(Parser inner)
{
this.Inner = inner;
}
public UnaryParser(string name, Parser inner)
{
this.Name = name;
this.Inner = inner;
}
protected UnaryParser(UnaryParser other, ParserCloneArgs args)
: base(other, args)
{
Inner = args.Clone(other.Inner);
}
/// <summary>
/// Pops a succesful named match node, and adds it to the parent match node
/// </summary>
/// <param name="parser">Parser with the name to add to the match tree</param>
/// <param name="index">Index of the start of the match</param>
/// <param name="length">Length of the match</param>
public void PopMatch(Parser parser, int index, int length)
{
// always successful here, assume at least two or more nodes
var last = nodes.Pop();
if (nodes.Count > 0)
{
var node = nodes.Last;
if (node == null)
{
node = new MatchCollection();
nodes.Last = node;
}
node.Add(new Match(parser, Scanner, index, length, last));
}
}
/// <summary>
/// Adds a match to the current result match node
/// </summary>
/// <remarks>
/// This is used to add a parse match to the result match tree
/// </remarks>
/// <param name="parser">Parser for the match</param>
/// <param name="index">Index of the start of the match</param>
/// <param name="length">Length of the match</param>
public void AddMatch(Parser parser, int index, int length)
{
if (nodes.Count > 0)
{
var node = nodes.Last;
if (node == null)
{
node = new MatchCollection();
nodes.Last = node;
}
node.Add(new Match(parser, Scanner, index, length));
}
}
public ParserReplaceArgs(Parser searchParser, Parser replaceParser)
{
this.SearchParser = searchParser;
this.ReplaceParser = replaceParser;
}
/// <summary>
/// Initializes a new instance of the <see cref="Eto.Parse.Grammar"/> class
/// </summary>
/// <param name="rule">Top level grammar rule</param>
public Grammar(Parser rule)
: this(null, rule)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Eto.Parse.Grammar"/> class
/// </summary>
/// <param name="name">Name of the grammar</param>
/// <param name="rule">Top level grammar rule</param>
public Grammar(string name = null, Parser rule = null)
: base(name, rule)
{
CaseSensitive = true;
EnableMatchEvents = true;
}