public static string Parse(Afx.Lexer lexer)
{
char openingQuoteSign;
char closingQuoteSign;
var contents = new StringBuilder();
var willBeEscaped = false;
if (lexer.IsSingleQuote() || lexer.IsDoubleQuote())
{
openingQuoteSign = lexer.Consume();
}
else
{
throw new AfxException("Unquoted String literal");
}
while (true)
{
if (lexer.IsEnd())
{
throw new AfxException($"Unfinished string literal \"{contents.ToString()}\"");
}
if (lexer.IsBackSlash() && !willBeEscaped)
{
willBeEscaped = true;
lexer.Consume();
continue;
}
if (lexer.IsSingleQuote() || lexer.IsDoubleQuote())
{
closingQuoteSign = lexer.Consume();
if (!willBeEscaped && openingQuoteSign == closingQuoteSign)
{
return(contents.ToString());
}
contents.Append(closingQuoteSign);
willBeEscaped = false;
continue;
}
contents.Append(lexer.Consume());
willBeEscaped = false;
}
}
public static PropParsingResult Parse(Afx.Lexer lexer)
{
var identifier = Identifier.Parse(lexer);
if (lexer.IsEqualSign())
{
lexer.Consume();
if (lexer.IsSingleQuote() || lexer.IsDoubleQuote())
{
return(new PropParsingResult()
{
Type = AstNodeType.String,
Payload = StringLiteral.Parse(lexer),
Identifier = identifier
});
}
if (lexer.IsOpeningBrace())
{
return(new PropParsingResult()
{
Type = AstNodeType.Expression,
Payload = Expression.Parse(lexer),
Identifier = identifier
});
}
throw new AfxException($"Prop-Assignment \"{identifier}\" was not followed by quotes or braces");
}
else if (lexer.IsWhiteSpace() || lexer.IsForwardSlash() || lexer.IsClosingBracket())
{
return(new PropParsingResult()
{
Type = AstNodeType.Boolean,
Payload = true,
Identifier = identifier
});
}
else
{
throw new AfxException($"Prop identifier \"{identifier}\" is neither assignment nor boolean");
}
}
