Method handle_folding_range

src/folding.rs:22–46

Compute folding ranges for the given file content. Re-parses the source with `mago_syntax` (the raw AST is not cached) and walks every statement/expression to emit `FoldingRange` entries.

(&self, content: &str)

    /// Re-parses the source with `mago_syntax` (the raw AST is not cached)
    /// and walks every statement/expression to emit `FoldingRange` entries.
    pub fn handle_folding_range(&self, content: &str) -> Option<Vec<FoldingRange>> {
        let arena = Bump::new();
        let file_id = mago_database::file::FileId::new("input.php");
        let program = mago_syntax::parser::parse_file_content(&arena, file_id, content);

        let mut ranges: Vec<FoldingRange> = Vec::new();

        // ── AST walk ──
        for stmt in program.statements.iter() {
            collect_from_statement(stmt, content, &mut ranges);
        }

        // ── Trivia (comments) ──
        collect_comment_ranges(&program.trivia, content, &mut ranges);

        // Filter out single-line ranges and sort by start position.
        ranges.retain(|r| r.start_line < r.end_line);
        ranges.sort_by(|a, b| {
            a.start_line
                .cmp(&b.start_line)
                .then(a.end_line.cmp(&b.end_line))
        });

        Some(ranges)
    }
}

// ─── Helpers ────────────────────────────────────────────────────────────────