Linus Groh 1daa5158eb AK: Add GenericLexer::retreat() ...

This allows going back one character at a time, and then re-consume
previously consumed chars.
The code I need this for looks something like this:

    ASSERT(lexer.consume_specific('\\'));
    if (lexer.next_is("foo"))
        ...
    lexer.retreat();
    lexer.consume_escaped_character();  // This expects lexer.peek() == '\\'

2020-10-29 11:52:31 +01:00

4.7 KiB

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