private void StartNode(HmlToken name)
{
this.nodeName = name.Content;
this.position = name.Position;
this.nodeText = null;
this.nodeProperties = null;
this.isNodeStarted = true;
}
public HmlParsingException(HmlToken token, string message) : base(message)
{
this.Token = token;
}
private void ParseNode(HmlToken token)
{
if (token.Type == HmlTokenType.EndOfDocument)
{
if (isNodeStarted)
{
this.CreateNode();
}
return;
}
// Ignoring Whitespaces if not at the beginning of document or line
if (token.Type == HmlTokenType.Whitespaces)
{
if (token.Position.Start == 0 || lastToken?.Type == HmlTokenType.LineReturn)
{
this.tokens.Add(lastToken = token);
indent = token.Content.Length;
}
}
else
{
if (lastToken == null)
{
if (token.Type == HmlTokenType.Identifier)
{
this.StartNode(token);
}
else if (token.Type != HmlTokenType.LineReturn)
{
// Error : expected <node identifier> or indent
this.Throw(token, HmlTokenType.Identifier, HmlTokenType.Whitespaces);
}
}
else if (lastToken.Type == HmlTokenType.Whitespaces)
{
if (token.Type == HmlTokenType.Identifier)
{
this.StartNode(token);
}
else
{
// Error : expected <node identifier>
this.Throw(token, HmlTokenType.Identifier);
}
}
else if (lastToken.Type == HmlTokenType.Identifier)
{
if (!arePropertiesStarted)
{
if (token.Type == HmlTokenType.PropertiesStart)
{
this.StartProperties();
}
else if (token.Type == HmlTokenType.Text)
{
nodeText = token.Content;
}
else if (token.Type == HmlTokenType.LineReturn)
{
this.CreateNode();
}
else
{
// Error : expected '(' or ':' or <line return>
this.Throw(token, HmlTokenType.PropertiesStart, HmlTokenType.Text, HmlTokenType.LineReturn);
}
}
else
{
if (token.Type == HmlTokenType.Equals)
{
propertyName = lastToken.Content;
}
else
{
// Error : expected '='
this.Throw(token, HmlTokenType.Equals);
}
}
}
else if (lastToken.Type == HmlTokenType.Equals)
{
if (token.Type == HmlTokenType.PropertyValue)
{
this.nodeProperties[propertyName] = token.Content;
this.propertyName = null;
}
else
{
// Error : expected '"<property value>"'
this.Throw(token, HmlTokenType.PropertyValue);
}
}
else if (lastToken.Type == HmlTokenType.PropertyValue)
{
if (token.Type == HmlTokenType.PropertiesEnd)
{
this.EndProperties();
}
else if (token.Type != HmlTokenType.PropertiesSeparator)
{
// Error : expected ',' or `)`
this.Throw(token, HmlTokenType.PropertiesSeparator, HmlTokenType.PropertiesEnd);
}
}
else if (lastToken.Type == HmlTokenType.PropertiesSeparator)
{
if (token.Type == HmlTokenType.Identifier)
{
propertyName = token.Content;
}
else
{
// Error : expected <identifier>
this.Throw(token, HmlTokenType.Identifier);
}
}
else if (lastToken.Type == HmlTokenType.PropertiesStart)
{
if (token.Type == HmlTokenType.Identifier)
{
propertyName = token.Content;
}
else if (token.Type == HmlTokenType.PropertiesEnd)
{
this.EndProperties();
}
else
{
// Error : expected <property identifier> or ')'
this.Throw(token, HmlTokenType.Identifier, HmlTokenType.PropertiesEnd);
}
}
else if (lastToken.Type == HmlTokenType.PropertiesEnd)
{
if (token.Type == HmlTokenType.Text)
{
this.nodeText = token.Content;
}
else if (token.Type == HmlTokenType.LineReturn)
{
this.CreateNode();
}
else
{
// Error : expected ':<text>' or '\n'
this.Throw(token, HmlTokenType.Text, HmlTokenType.LineReturn);
}
}
else if (lastToken.Type == HmlTokenType.Text)
{
if (token.Type == HmlTokenType.LineReturn)
{
this.CreateNode();
}
else
{
// Error : expected '\n'
this.Throw(token, HmlTokenType.LineReturn);
}
}
else if (lastToken.Type == HmlTokenType.LineReturn)
{
if (token.Type == HmlTokenType.Identifier)
{
this.StartNode(token);
}
else if (token.Type != HmlTokenType.Whitespaces && token.Type != HmlTokenType.LineReturn)
{
// Error : expected '<node identifier>' or ' ' or '\n'
this.Throw(token, HmlTokenType.Identifier, HmlTokenType.Whitespaces, HmlTokenType.LineReturn);
}
}
this.tokens.Add(lastToken = token);
}
}
private void Throw(HmlToken token, params HmlTokenType[] expected)
{
throw new HmlInvalidTokenParsingException(token, this.lastToken, expected);
}
/// <summary>
/// Initializes a new instance of the <see cref="T:Hml.Parser.Exceptions.HmlInvalidTokenParsingException"/> class.
/// </summary>
/// <param name="token">Token.</param>
/// <param name="previousToken">Previous token.</param>
/// <param name="expected">Expected.</param>
public HmlInvalidTokenParsingException(HmlToken token, HmlToken previousToken, params HmlTokenType[] expected) : base(token, $"got token {GetTokenInfo(token.Type)} at position [{token.Position.Line}, {token.Position.Column}] (following { (previousToken != null ? GetTokenInfo(previousToken.Type) : "start")}), expected : { string.Join(", ", expected.Select(x => GetTokenInfo(x))) }")
{
this.PreviousToken = previousToken;
this.ExpectedTokens = expected;
}
