public override bool TryParse(TokenStack tokens, out GraphNode node)
{
var typeDeclarationSyntax = new TypeDeclarationSyntax();
if (typeDeclarationSyntax.TryParse(tokens, out GraphNode typeDeclaration))
{
if (tokens.Expect(TokenType.Identifier))
{
var identifier = tokens.Pop();
if (tokens.Expect(TokenType.AsKeyword))
{
var asKeyword = tokens.Pop();
if (typeDeclarationSyntax.TryParse(tokens, out GraphNode asTypeDeclaration))
{
node = new PropertyDeclaration(new[] { identifier }, identifier.Value, (TypeDeclaration)typeDeclaration, (TypeDeclaration)asTypeDeclaration);
return(true);
}
else
{
// TODO: syntax error
}
}
else
{
node = new PropertyDeclaration(new[] { identifier }, identifier.Value, (TypeDeclaration)typeDeclaration);
return(true);
}
}
else
{
// TODO: syntax error
}
}
// TODO: syntax error
node = null;
return(false);
}
public override bool TryParse(TokenStack tokens, out GraphNode node)
{
var source = new Queue <Token>();
if (tokens.Expect(TokenType.Identifier))
{
var identifier = tokens.Pop();
source.Enqueue(identifier);
if (tokens.Expect(TokenType.ColonSymbol))
{
var colon = tokens.Pop();
source.Enqueue(colon);
var valueSyntax = new ValueSyntax();
if (valueSyntax.TryParse(tokens, out GraphNode value))
{
node = new EnumValue(source, identifier.Value, (Value)value);
return(true);
}
else
{
// TODO: syntax error
node = null;
return(false);
}
}
else
{
node = new EnumValue(source, identifier.Value, null);
return(true);
}
}
// TODO: syntax error
node = null;
return(false);
}
public override bool TryParse(TokenStack tokens, out GraphNode node)
{
if (tokens.Expect(TokenType.OpenKeyword))
{
var source = new List <Token>();
source.Add(tokens.Pop());
if (tokens.ExpectAny(TokenType.StringLiteral, TokenType.Identifier))
{
var valueToken = tokens.Pop();
source.Add(valueToken);
var value = new Value(new [] { valueToken }, valueToken.TokenType == TokenType.Identifier ? ValueType.Identifier : ValueType.String, valueToken.Value);
node = new OpenStatement(source, value);
return(true);
}
}
// TODO: syntax error
node = null;
return(false);
}