private Token ReaderValue(CharIterator reader)
{
var end = reader.IndexOf('}');
var content = reader.Read(end - reader.Position - 1, 1);
reader.Position = end;
return(new Token()
{
Type = content.IndexOf('~') >= 0 ? TokenType.Random : TokenType.Value, Content = content
});
}
private Token ReaderIntFor(CharIterator reader)
{
var end = reader.IndexOf('}');
var content = reader.Read(end - reader.Position - 1, 1);
reader.Position = end;
return(new BlockToken()
{
Type = TokenType.IntFor,
Content = content,
Children = RenderBlockInner(reader, true)
});
}
private Token ReaderComment(CharIterator reader)
{
var isMulti = reader.NextIs('*');
var i = isMulti ? reader.IndexOf("*/") : reader.IndexOf("\n");
var start = reader.Position + 2;
var end = i < 0 ? reader.Length : i - 1;
var content = reader.ReadSeek(start, end - start);
reader.Position = i < 0 ? reader.Length : i + 1;
return(new Token()
{
Type = TokenType.Comment, Content = content
});
}
private Token ReaderFor(CharIterator reader)
{
var end = reader.IndexOf('}');
var start = reader.Position + (reader.NextIs('~') ? 2 : 4);
var content = reader.ReadSeek(start, end - start);
reader.Position = end;
return(new BlockToken()
{
Type = TokenType.For,
Content = content,
Children = RenderBlockInner(reader, true)
});
}
private bool IsBlock(CharIterator reader)
{
var endIndex = reader.IndexOf('}');
if (endIndex < 0)
{
return(false);
}
var lineIndex = reader.IndexOf('\n');
if (lineIndex > 0 && endIndex > lineIndex)
{
return(false);
}
var startIndex = reader.IndexOf('{', 1);
return(startIndex > endIndex);
}
private IList <Token> RenderBlockInner(CharIterator reader, bool checkEnd = true)
{
var items = new List <Token>();
var builder = new StringBuilder();
while (reader.MoveNext())
{
if (reader.Current == '/' && reader.NextIs('*', '/'))
{
items.Add(new Token()
{
Content = builder.ToString()
});
builder.Clear();
items.Add(ReaderComment(reader));
continue;
}
if (reader.Current == '\\' && reader.NextIs('{'))
{
if (reader.ReverseCount('\\') % 2 == 1)
{
builder.Append(reader.Current);
continue;
}
builder.Append("{");
reader.MoveNext();
continue;
}
if (reader.Current == '{' && checkEnd && reader.NextIs("end}", "!}"))
{
reader.Position += reader.NextIs('!') ? 2 : 4;
break;
}
if (reader.Current != '{' || !IsBlock(reader))
{
builder.Append(reader.Current);
continue;
}
if (reader.NextIs("for", "~"))
{
items.Add(new Token()
{
Content = builder.ToString()
});
builder.Clear();
items.Add(ReaderFor(reader));
continue;
}
if (reader.MinIndex("...", "}") == 0)
{
items.Add(new Token()
{
Content = builder.ToString()
});
builder.Clear();
items.Add(ReaderIntFor(reader));
continue;
}
if (reader.MinIndex(',', '}') == 0)
{
items.Add(new Token()
{
Content = builder.ToString()
});
builder.Clear();
items.Add(ReaderStringFor(reader));
continue;
}
if (reader.MinIndex(' ', '}') == 0)
{
builder.Append(reader.Current);
continue;
}
items.Add(new Token()
{
Content = builder.ToString()
});
builder.Clear();
items.Add(ReaderValue(reader));
}
items.Add(new Token()
{
Content = builder.ToString()
});
builder.Clear();
return(items);
}
public IList <Token> Render(CharIterator reader)
{
return(RenderBlockInner(reader, false));
}
