public static PatternCapture Create(PatternVariable variable, SyntaxNodeOrToken startNodeOrToken, SyntaxNodeOrToken endNodeOrToken)
{
Debug.Assert(endNodeOrToken.Parent != startNodeOrToken.Parent,
$"{nameof(endNodeOrToken)}.{nameof(endNodeOrToken.Parent)} must match {nameof(startNodeOrToken)}", nameof(endNodeOrToken));
return new PatternCapture(variable, startNodeOrToken, endNodeOrToken);
}
private bool TryGetVariable(SyntaxToken token, out PatternVariable variable)
{
variable = null;
if (token.Kind() != SyntaxKind.IdentifierToken)
return false;
var variableName = token.ValueText;
return _variableMap.TryGetValue(variableName, out variable);
}
private bool TryGetVariable(SyntaxNode node, out PatternVariable variable)
{
variable = null;
var tokens = node.DescendantTokens().Take(2).ToImmutableArray();
if (tokens.Length != 1)
return false;
var token = tokens[0];
return TryGetVariable(token, out variable);
}
public bool TryGetVariable(SyntaxNodeOrToken nodeOrToken, out PatternVariable variable)
{
return nodeOrToken.IsToken
? TryGetVariable(nodeOrToken.AsToken(), out variable)
: TryGetVariable(nodeOrToken.AsNode(), out variable);
}
public Match AddCapture(PatternVariable variable, SyntaxNodeOrToken startNodeOrToken, SyntaxNodeOrToken endNodeOrToken)
{
var capture = PatternCapture.Create(variable, startNodeOrToken, endNodeOrToken);
return AddCapture(capture);
}
public Match AddCapture(PatternVariable variable, SyntaxNodeOrToken nodeOrToken)
{
var capture = PatternCapture.Create(variable, nodeOrToken);
return AddCapture(capture);
}
public static PatternCapture Create(PatternVariable variable, SyntaxNodeOrToken nodeOrToken)
{
return new PatternCapture(variable, nodeOrToken, nodeOrToken);
}
private PatternCapture(PatternVariable variable, SyntaxNodeOrToken startNodeOrToken, SyntaxNodeOrToken endNodeOrToken)
{
Variable = variable;
StartNodeOrToken = startNodeOrToken;
EndNodeOrToken = endNodeOrToken;
}
public ReplacedCapture(PatternVariable variable, IEnumerable<SyntaxNodeOrToken> contents)
{
Variable = variable;
Contents = contents.ToImmutableArray();
}