added statement expansion to parser

[dean-starkware]

No description provided.

[reviewable-StarkWare]

This change is 

[orizi]

Reviewed 2 of 11 files at r2, all commit messages.
Reviewable status: 2 of 11 files reviewed, 2 unresolved discussions (waiting on @gilbens-starkware)

---

crates/cairo-lang-parser/src/parser.rs line 1536 at r2 (raw file):

        );
        Ok(placeholder_repetition_block.into())
    }

move to under the usage.

(probably right below parse_statements_and_block.

Code quote:

    /// Parses a placeholder repetition block inside a macro.
    fn parse_placeholder_repetition_block(&mut self) -> TryParseResult<StatementBlockGreen> {
        let dollar = self.take::<TerminalDollar>();
        if self.peek().kind != SyntaxKind::TerminalLParen {
            return Err(TryParseFailure::SkipToken);
        }
        let lparen = self.take::<TerminalLParen>();
        let elements = StatementList::new_green(
            self.db,
            self.parse_list(
                Self::try_parse_statement,
                is_of_kind!(rparen, block, rbrace, module_item_kw),
                "statement",
            ),
        );
        let rparen = self.parse_token::<TerminalRParen>();
        let operator = match self.peek().kind {
            SyntaxKind::TerminalQuestionMark => self.take::<TerminalQuestionMark>().into(),
            SyntaxKind::TerminalPlus => self.take::<TerminalPlus>().into(),
            SyntaxKind::TerminalMul => self.take::<TerminalMul>().into(),
            _ => self
                .create_and_report_missing::<TerminalPlus>(
                    ParserDiagnosticKind::MissingRepetitionOperator,
                )
                .into(),
        };
        let placeholder_repetition_block = PlaceholderRepetitionBlock::new_green(
            self.db, dollar, lparen, elements, rparen, operator,
        );
        Ok(placeholder_repetition_block.into())
    }

---

crates/cairo-lang-parser/src/parser_test_data/diagnostics/expr_diagnostics line 42 at r2 (raw file):

 --> dummy_file.cairo:4:7
    } + match x {
      ^

?

Code quote:

error: Skipped tokens. Expected: statement.
 --> dummy_file.cairo:4:7
    } + match x {
      ^