static ErrorComparison ts_parser__compare_versions()

in lib/src/parser.c [197:233]

• 33 lines of code
• 13 McCabe index (conditional complexity)

static ErrorComparison ts_parser__compare_versions(TSParser *self, ErrorStatus a, ErrorStatus b) {
  if (!a.is_in_error && b.is_in_error) {
    if (a.cost < b.cost) {
      return ErrorComparisonTakeLeft;
    } else {
      return ErrorComparisonPreferLeft;
    }
  }

  if (a.is_in_error && !b.is_in_error) {
    if (b.cost < a.cost) {
      return ErrorComparisonTakeRight;
    } else {
      return ErrorComparisonPreferRight;
    }
  }

  if (a.cost < b.cost) {
    if ((b.cost - a.cost) * (1 + a.node_count) > MAX_COST_DIFFERENCE) {
      return ErrorComparisonTakeLeft;
    } else {
      return ErrorComparisonPreferLeft;
    }
  }

  if (b.cost < a.cost) {
    if ((a.cost - b.cost) * (1 + b.node_count) > MAX_COST_DIFFERENCE) {
      return ErrorComparisonTakeRight;
    } else {
      return ErrorComparisonPreferRight;
    }
  }

  if (a.dynamic_precedence > b.dynamic_precedence) return ErrorComparisonPreferLeft;
  if (b.dynamic_precedence > a.dynamic_precedence) return ErrorComparisonPreferRight;
  return ErrorComparisonNone;
}