private static void ParseSuperscript(SimpleTextLexer lexer, SimpleTextContext context)
{
double shift = context.RelativeFontWeight * 0.375;
context.BaselineY -= shift;
context.RelativeFontWeight *= 0.75;
if (lexer.Branch(TokenType.OpenBracket))
{
// Parse until a closing bracket
while (lexer.Check(~TokenType.Newline & ~TokenType.CloseBracket & ~TokenType.Superscript & ~TokenType.Subscript))
{
ParseToken(lexer, context);
}
lexer.Branch(TokenType.CloseBracket);
}
else
{
// Parse until a whitespace
while (lexer.Check(~TokenType.Newline & ~TokenType.CloseBracket & ~TokenType.Subscript & ~TokenType.Superscript) && lexer.Content.Span[0] != ' ')
{
ParseToken(lexer, context);
}
}
context.BaselineY += shift;
context.RelativeFontWeight /= 0.75;
}
public static void Parse(SimpleTextLexer lexer, SimpleTextContext context)
{
while (lexer.Type != TokenType.EndOfContent)
{
ParseToken(lexer, context);
}
}
private static void ParseToken(SimpleTextLexer lexer, SimpleTextContext context)
{
switch (lexer.Type)
{
case TokenType.Subscript:
lexer.Next();
ParseSubscript(lexer, context);
break;
case TokenType.Superscript:
lexer.Next();
ParseSuperscript(lexer, context);
break;
case TokenType.Escaped:
context.Append(lexer.Content.Span[1]);
lexer.Next();
break;
case TokenType.Newline:
context.Newline();
lexer.Next();
break;
default:
context.Append(lexer.Content.ToString());
lexer.Next();
break;
}
}
