Method expect

crates/ptx/src/parser.rs:24–34

(&mut self, kind: TokenKind)

    }

    pub(crate) fn expect(&mut self, kind: TokenKind) -> ParserResult<Token> {
        match self.next() {
            None => Err(format!("Expected `{:?}`, but instead the file ended", kind)),
            Some(Ok(token)) if token.kind == kind => Ok(token),
            Some(Ok(token)) => Err(format!(
                "Expected `{:?}`, but instead found `{:?}`",
                kind, token.kind
            )),
            Some(Err(err)) => Err(err),
        }
    }

    pub(crate) fn cur_value(&mut self) -> TokenValue {
        self.lexer.values[self.token_pos]