Returns Dart code to upgrade expectedTable to actualTable.
Source
String generateUpgradeSource({List<String> changeList}) { var builder = new StringBuffer(); _differingColumns .where((diff) => diff.expectedColumn == null && diff.actualColumn != null) .map((diff) => diff.actualColumn) .forEach((c) { changeList?.add("Adding column '${c.name}' to table '${actualTable.name}'"); builder.writeln(createColumnSource(c)); }); _differingColumns .where((diff) => diff.expectedColumn != null && diff.actualColumn == null) .map((diff) => diff.expectedColumn) .forEach((c) { changeList?.add("Deleting column '${c.name}' from table '${actualTable.name}'"); builder.writeln(deleteColumnSource(c)); }); _differingColumns .where((columnDiff) => columnDiff.expectedColumn != null && columnDiff.actualColumn != null) .forEach((columnDiff) { var lines = columnDiff.generateUpgradeSource(changeList: changeList); builder.writeln(lines); }); if (uniqueSetDifference?.hasDifferences ?? false) { builder.writeln(uniqueSetDifference.generateUpgradeSource(changeList: changeList)); } return builder.toString(); }