fn add_field_sequences()

in cli/src/generate/render.rs [385:458]

• 70 lines of code
• 10 McCabe index (conditional complexity)

    fn add_field_sequences(&mut self) {
        let mut flat_field_maps = vec![];
        let mut next_flat_field_map_index = 0;
        self.get_field_map_id(
            &Vec::new(),
            &mut flat_field_maps,
            &mut next_flat_field_map_index,
        );

        let mut field_map_ids = Vec::new();
        for production_info in &self.parse_table.production_infos {
            if !production_info.field_map.is_empty() {
                let mut flat_field_map = Vec::new();
                for (field_name, locations) in &production_info.field_map {
                    for location in locations {
                        flat_field_map.push((field_name.clone(), *location));
                    }
                }
                field_map_ids.push((
                    self.get_field_map_id(
                        &flat_field_map,
                        &mut flat_field_maps,
                        &mut next_flat_field_map_index,
                    ),
                    flat_field_map.len(),
                ));
            } else {
                field_map_ids.push((0, 0));
            }
        }

        add_line!(
            self,
            "static const TSFieldMapSlice ts_field_map_slices[] = {{",
        );
        indent!(self);
        for (production_id, (row_id, length)) in field_map_ids.into_iter().enumerate() {
            if length > 0 {
                add_line!(
                    self,
                    "[{}] = {{.index = {}, .length = {}}},",
                    production_id,
                    row_id,
                    length
                );
            }
        }
        dedent!(self);
        add_line!(self, "}};");
        add_line!(self, "");

        add_line!(
            self,
            "static const TSFieldMapEntry ts_field_map_entries[] = {{",
        );
        indent!(self);
        for (row_index, field_pairs) in flat_field_maps.into_iter().skip(1) {
            add_line!(self, "[{}] =", row_index);
            indent!(self);
            for (field_name, location) in field_pairs {
                add_whitespace!(self);
                add!(self, "{{{}, {}", self.field_id(&field_name), location.index);
                if location.inherited {
                    add!(self, ", .inherited = true");
                }
                add!(self, "}},\n");
            }
            dedent!(self);
        }

        dedent!(self);
        add_line!(self, "}};");
        add_line!(self, "");
    }