Make modules configurable via a build option

moor_generator/lib/src/analyzer/options.dart

@@ -2,6 +2,10 @@ import 'package:json_annotation/json_annotation.dart';
 
 part 'options.g.dart';
 
+// note when working on this file: If you can't run the builder because
+// options.g.dart is missing, just re-create it from git. build_runner will
+// complain about existing outputs, let it delete the part file.
+
 /// Controllable options to define the behavior of the analyzer and the
 /// generator.
 @JsonSerializable(
@@ -48,6 +52,9 @@ class MoorOptions {
   @JsonKey(name: 'generate_connect_constructor')
   final bool generateConnectConstructor;
 
+  @JsonKey(name: 'sqlite_modules', defaultValue: [])
+  final List<SqlModule> modules;
+
   const MoorOptions(
       {this.generateFromJsonStringConstructor = false,
       this.overrideHashAndEqualsInResultSets = false,
@@ -55,8 +62,20 @@ class MoorOptions {
       this.skipVerificationCode = false,
       this.useDataClassNameForCompanions = false,
       this.useColumnNameAsJsonKeyWhenDefinedInMoorFile = false,
-      this.generateConnectConstructor = false});
+      this.generateConnectConstructor = false,
+      this.modules = const []});
 
   factory MoorOptions.fromJson(Map<String, dynamic> json) =>
       _$MoorOptionsFromJson(json);
 }
+
+/// Set of sqlite modules that require special knowledge from the generator.
+enum SqlModule {
+  /// Enables support for the json1 module and its functions when parsing sql
+  /// queries.
+  json1,
+
+  /// Enables support for the fts5 module and its functions when parsing sql
+  /// queries.
+  fts5,
+}

moor_generator/lib/src/analyzer/options.g.dart

@@ -9,17 +9,18 @@ part of 'options.dart';
 MoorOptions _$MoorOptionsFromJson(Map<String, dynamic> json) {
   return $checkedNew('MoorOptions', json, () {
     $checkKeys(json, allowedKeys: const [
-      'generate_from_json_string_constructor',
+      'write_from_json_string_constructor',
       'override_hash_and_equals_in_result_sets',
       'compact_query_methods',
       'skip_verification_code',
       'use_data_class_name_for_companions',
       'use_column_name_as_json_key_when_defined_in_moor_file',
-      'generate_connect_constructor'
+      'generate_connect_constructor',
+      'sqlite_modules'
     ]);
     final val = MoorOptions(
       generateFromJsonStringConstructor: $checkedConvert(
-          json, 'generate_from_json_string_constructor', (v) => v as bool),
+          json, 'write_from_json_string_constructor', (v) => v as bool),
       overrideHashAndEqualsInResultSets: $checkedConvert(
           json, 'override_hash_and_equals_in_result_sets', (v) => v as bool),
       compactQueryMethods:
@@ -34,11 +35,17 @@ MoorOptions _$MoorOptionsFromJson(Map<String, dynamic> json) {
           (v) => v as bool),
       generateConnectConstructor: $checkedConvert(
           json, 'generate_connect_constructor', (v) => v as bool),
+      modules: $checkedConvert(
+              json,
+              'sqlite_modules',
+              (v) => (v as List)
+                  ?.map((e) => _$enumDecodeNullable(_$SqlModuleEnumMap, e))
+                  ?.toList()) ??
+          [],
     );
     return val;
   }, fieldKeyMap: const {
-    'generateFromJsonStringConstructor':
-        'generate_from_json_string_constructor',
+    'generateFromJsonStringConstructor': 'write_from_json_string_constructor',
     'overrideHashAndEqualsInResultSets':
         'override_hash_and_equals_in_result_sets',
     'compactQueryMethods': 'compact_query_methods',
@@ -46,6 +53,44 @@ MoorOptions _$MoorOptionsFromJson(Map<String, dynamic> json) {
     'useDataClassNameForCompanions': 'use_data_class_name_for_companions',
     'useColumnNameAsJsonKeyWhenDefinedInMoorFile':
         'use_column_name_as_json_key_when_defined_in_moor_file',
-    'generateConnectConstructor': 'generate_connect_constructor'
+    'generateConnectConstructor': 'generate_connect_constructor',
+    'modules': 'sqlite_modules'
   });
 }
+
+T _$enumDecode<T>(
+  Map<T, dynamic> enumValues,
+  dynamic source, {
+  T unknownValue,
+}) {
+  if (source == null) {
+    throw ArgumentError('A value must be provided. Supported values: '
+        '${enumValues.values.join(', ')}');
+  }
+
+  final value = enumValues.entries
+      .singleWhere((e) => e.value == source, orElse: () => null)
+      ?.key;
+
+  if (value == null && unknownValue == null) {
+    throw ArgumentError('`$source` is not one of the supported values: '
+        '${enumValues.values.join(', ')}');
+  }
+  return value ?? unknownValue;
+}
+
+T _$enumDecodeNullable<T>(
+  Map<T, dynamic> enumValues,
+  dynamic source, {
+  T unknownValue,
+}) {
+  if (source == null) {
+    return null;
+  }
+  return _$enumDecode<T>(enumValues, source, unknownValue: unknownValue);
+}
+
+const _$SqlModuleEnumMap = {
+  SqlModule.json1: 'json1',
+  SqlModule.fts5: 'fts5',
+};