public static EntitySet Parse(Lexer lexer)
{
var result = new EntitySet();
var token = lexer.Scan();
Entity lastEntity = null;
Link lastLink = null;
var isValues = false;
var shouldBreak = false;
while (!shouldBreak && token.type != TokenType.Error)
{
switch (token.type)
{
case TokenType.Entity:
lastEntity = new Entity(token.value);
result.Entities.Add(lastEntity);
isValues = false;
lastLink = null;
break;
case TokenType.Values:
isValues = true;
break;
case TokenType.Alternative:
if (lastLink == null)
lastEntity.Type = EntityType.Secondary;
else
lastLink.Type = LinkType.Primary;
break;
case TokenType.Property:
if (isValues)
{
lastEntity.Values.Add(token.value);
}
else
{
lastEntity.Properties.Add(token.value);
}
break;
case TokenType.Link:
lastLink = new Link(token.value);
lastEntity.Links.Add(lastLink);
break;
case TokenType.Name:
lastLink.Name = token.value;
break;
case TokenType.EOF:
shouldBreak = true;
break;
case TokenType.Error:
Console.WriteLine("Error: {0}", token.value);
shouldBreak = true;
break;
}
token = lexer.Scan();
}
return result;
}
public static EntitySet Parse(string location, string source)
{
using (var lexer = new Lexer(location, source))
return Parse(lexer);
}