public static string Parse(Afx.Lexer lexer)
{
StringBuilder identifier = new StringBuilder();
while (true)
{
if (lexer.IsAlphaNumeric() ||
lexer.IsDot() ||
lexer.IsColon() ||
lexer.IsMinus() ||
lexer.IsUnderscore() ||
lexer.IsAt())
{
identifier.Append(lexer.Consume());
continue;
}
if (lexer.IsEqualSign() ||
lexer.IsWhiteSpace() ||
lexer.IsClosingBracket() ||
lexer.IsForwardSlash())
{
return(identifier.ToString());
}
var unexpectedChar = lexer.Consume();
throw new AfxException($@"Unexpected character ""{unexpectedChar}"" in identifier ""{identifier.ToString()}""");
}
}
public static PropParsingResult Parse(Afx.Lexer lexer)
{
var identifier = Identifier.Parse(lexer);
if (lexer.IsEqualSign())
{
lexer.Consume();
if (lexer.IsSingleQuote() || lexer.IsDoubleQuote())
{
return(new PropParsingResult()
{
Type = AstNodeType.String,
Payload = StringLiteral.Parse(lexer),
Identifier = identifier
});
}
if (lexer.IsOpeningBrace())
{
return(new PropParsingResult()
{
Type = AstNodeType.Expression,
Payload = Expression.Parse(lexer),
Identifier = identifier
});
}
throw new AfxException($"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");
}
}
