109 lines
3.5 KiB
Dart
109 lines
3.5 KiB
Dart
import 'package:analyzer/dart/constant/value.dart';
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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:angel_serialize/angel_serialize.dart';
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import 'package:code_builder/code_builder.dart';
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import 'package:recase/recase.dart';
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import 'package:source_gen/source_gen.dart';
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/// A base context for building serializable classes.
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class BuildContext {
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ReCase _modelClassNameRecase;
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TypeReference _modelClassType;
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/// A map of fields that are absolutely required, and error messages for when they are absent.
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final Map<String, String> requiredFields = {};
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/// A map of field names to resolved names from `@Alias()` declarations.
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final Map<String, String> aliases = {};
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/// A map of field names to their default values.
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final Map<String, DartObject> defaults = {};
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/// A map of fields to their related information.
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final Map<String, SerializableFieldMirror> fieldInfo = {};
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/// A map of fields that have been marked as to be excluded from serialization.
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// ignore: deprecated_member_use
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final Map<String, Exclude> excluded = {};
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/// A map of "synthetic" fields, i.e. `id` and `created_at` injected automatically.
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final Map<String, bool> shimmed = {};
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final bool autoIdAndDateFields, autoSnakeCaseNames;
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final String originalClassName, sourceFilename;
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/// The fields declared on the original class.
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final List<FieldElement> fields = [];
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final List<ParameterElement> constructorParameters = [];
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final ConstantReader annotation;
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final ClassElement clazz;
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/// Any annotations to include in the generated class.
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final List<DartObject> includeAnnotations;
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/// The name of the field that identifies data of this model type.
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String primaryKeyName = 'id';
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BuildContext(this.annotation, this.clazz,
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{this.originalClassName,
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this.sourceFilename,
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this.autoSnakeCaseNames,
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this.autoIdAndDateFields,
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this.includeAnnotations = const <DartObject>[]});
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/// The name of the generated class.
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String get modelClassName => originalClassName.startsWith('_')
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? originalClassName.substring(1)
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: originalClassName;
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/// A [ReCase] instance reflecting on the [modelClassName].
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ReCase get modelClassNameRecase =>
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_modelClassNameRecase ??= ReCase(modelClassName);
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TypeReference get modelClassType =>
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_modelClassType ??= TypeReference((b) => b.symbol = modelClassName);
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/// The [FieldElement] pointing to the primary key.
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FieldElement get primaryKeyField =>
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fields.firstWhere((f) => f.name == primaryKeyName);
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bool get importsPackageMeta {
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return clazz.library.imports.any((i) => i.uri == 'package:meta/meta.dart');
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}
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/// Get the aliased name (if one is defined) for a field.
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String resolveFieldName(String name) =>
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aliases.containsKey(name) ? aliases[name] : name;
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/// Finds the type that the field [name] should serialize to.
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DartType resolveSerializedFieldType(String name) {
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return fieldInfo[name]?.serializesTo ??
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fields.firstWhere((f) => f.name == name).type;
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}
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}
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class SerializableFieldMirror {
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final String alias;
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final DartObject defaultValue;
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final Symbol serializer, deserializer;
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final String errorMessage;
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final bool isNullable, canDeserialize, canSerialize, exclude;
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final DartType serializesTo;
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SerializableFieldMirror(
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{this.alias,
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this.defaultValue,
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this.serializer,
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this.deserializer,
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this.errorMessage,
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this.isNullable,
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this.canDeserialize,
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this.canSerialize,
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this.exclude,
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this.serializesTo});
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}
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