93 lines
2.8 KiB
Dart
93 lines
2.8 KiB
Dart
import 'dart:async';
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import 'package:analyzer/dart/element/element.dart';
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import 'package:analyzer/dart/element/type.dart';
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import 'package:analyzer/src/dart/element/element.dart';
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import 'package:angel_serialize/angel_serialize.dart';
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import 'package:build/build.dart';
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import 'package:path/path.dart' as p;
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import 'package:recase/recase.dart';
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import 'package:source_gen/source_gen.dart';
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import 'context.dart';
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const TypeChecker aliasTypeChecker = const TypeChecker.fromRuntime(Alias);
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const TypeChecker excludeTypeChecker = const TypeChecker.fromRuntime(Exclude);
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const TypeChecker serializableTypeChecker =
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const TypeChecker.fromRuntime(Serializable);
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/// Create a [BuildContext].
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Future<BuildContext> buildContext(
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ClassElement clazz,
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Serializable annotation,
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BuildStep buildStep,
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Resolver resolver,
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bool autoSnakeCaseNames,
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bool autoIdAndDateFields,
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{bool heedExclude: true}) async {
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var ctx = new BuildContext(annotation,
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originalClassName: clazz.name,
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sourceFilename: p.basename(buildStep.inputId.path));
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var lib = await resolver.libraryFor(buildStep.inputId);
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List<String> fieldNames = [];
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for (var field in clazz.fields) {
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if (field.getter != null && field.setter != null) {
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fieldNames.add(field.name);
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// Skip if annotated with @exclude
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var excludeAnnotation = excludeTypeChecker.firstAnnotationOf(field);
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if (excludeAnnotation != null) continue;
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// Check for alias
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Alias alias;
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var aliasAnn = aliasTypeChecker.firstAnnotationOf(field);
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if (aliasAnn != null) {
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alias = new Alias(aliasAnn.getField('name').toStringValue());
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}
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if (alias?.name?.isNotEmpty == true) {
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ctx.aliases[field.name] = alias.name;
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} else if (autoSnakeCaseNames != false) {
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ctx.aliases[field.name] = new ReCase(field.name).snakeCase;
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}
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ctx.fields.add(field);
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}
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}
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if (autoIdAndDateFields != false) {
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if (!fieldNames.contains('id')) {
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var idField =
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new ShimFieldImpl('id', lib.context.typeProvider.stringType);
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ctx.fields.insert(0, idField);
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ctx.shimmed['id'] = true;
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}
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DartType dateTime;
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for (var key in ['createdAt', 'updatedAt']) {
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if (!fieldNames.contains(key)) {
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if (dateTime == null) {
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var coreLib =
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await resolver.libraries.singleWhere((lib) => lib.isDartCore);
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var dt = coreLib.getType('DateTime');
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dateTime = dt.type;
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}
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var field = new ShimFieldImpl(key, dateTime);
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ctx.aliases[key] = new ReCase(key).snakeCase;
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ctx.fields.add(field);
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ctx.shimmed[key] = true;
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}
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}
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}
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return ctx;
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}
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/// A manually-instantiated [FieldElement].
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class ShimFieldImpl extends FieldElementImpl {
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@override
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final DartType type;
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ShimFieldImpl(String name, this.type) : super(name, -1);
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}
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