Remove moor-specific nodes from ast megalib

sqlparser/lib/src/ast/ast.dart

@@ -4,15 +4,20 @@ import 'package:sqlparser/src/reader/tokenizer/token.dart';
 
 // todo: Remove these imports after splitting up this library
 import 'expressions/expressions.dart';
+import 'moor/inline_dart.dart';
 import 'node.dart';
 import 'statements/create_index.dart';
 import 'statements/select.dart';
-import 'statements/statement.dart';
 import 'visitor.dart';
 
 export 'clauses/returning.dart';
 export 'clauses/upsert.dart';
 export 'expressions/expressions.dart';
+export 'moor/declared_statement.dart';
+export 'moor/import_statement.dart';
+export 'moor/inline_dart.dart';
+export 'moor/moor_file.dart';
+export 'moor/nested_star_result_column.dart';
 export 'node.dart';
 export 'statements/block.dart';
 export 'statements/create_index.dart';
@@ -43,10 +48,5 @@ part 'expressions/reference.dart';
 part 'expressions/simple.dart';
 part 'expressions/subquery.dart';
 part 'expressions/variables.dart';
-part 'moor/declared_statement.dart';
-part 'moor/import_statement.dart';
-part 'moor/inline_dart.dart';
-part 'moor/moor_file.dart';
-part 'moor/nested_star_result_column.dart';
 part 'schema/column_definition.dart';
 part 'schema/table_definition.dart';

sqlparser/lib/src/ast/moor/declared_statement.dart

@@ -1,4 +1,10 @@
-part of '../ast.dart';
+import '../../reader/tokenizer/token.dart';
+import '../ast.dart' show Variable;
+import '../expressions/expressions.dart';
+import '../node.dart';
+import '../statements/statement.dart';
+import '../visitor.dart';
+import 'moor_file.dart';
 
 /// A declared statement inside a `.moor` file. It consists of an identifier,
 /// followed by a colon and the query to run.

sqlparser/lib/src/ast/moor/import_statement.dart

@@ -1,4 +1,8 @@
-part of '../ast.dart';
+import '../../reader/tokenizer/token.dart';
+import '../node.dart';
+import '../statements/statement.dart';
+import '../visitor.dart';
+import 'moor_file.dart';
 
 /// An `import "file.dart";` statement that can appear inside a moor file.
 class ImportStatement extends Statement implements PartOfMoorFile {

sqlparser/lib/src/ast/moor/inline_dart.dart

@@ -1,4 +1,7 @@
-part of '../ast.dart';
+import '../../reader/tokenizer/token.dart';
+import '../ast.dart';
+import '../node.dart';
+import '../visitor.dart';
 
 /// An inline Dart component that appears in a compiled sql query. Inline Dart
 /// components can be bound with complex expressions at runtime by using moor's

sqlparser/lib/src/ast/moor/moor_file.dart

@@ -1,4 +1,8 @@
-part of '../ast.dart';
+import '../node.dart';
+import '../statements/statement.dart';
+import '../visitor.dart';
+import 'declared_statement.dart';
+import 'import_statement.dart';
 
 /// Something that can appear as a top-level declaration inside a `.moor` file.
 abstract class PartOfMoorFile implements Statement {}

sqlparser/lib/src/ast/moor/nested_star_result_column.dart

@@ -1,4 +1,7 @@
-part of '../ast.dart';
+import '../../analysis/analysis.dart';
+import '../ast.dart' show StarResultColumn, ResultColumn;
+import '../node.dart';
+import '../visitor.dart';
 
 /// A nested star result column, denoted by `**` in user queries.
 ///