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fromMap

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This commit is contained in:
Tobe O 2018-02-27 21:10:43 -05:00
parent 64cd59c345
commit 2210cde81c
5 changed files with 171 additions and 23 deletions
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8
angel_serialize_generator/lib/angel_serialize_generator.dart
View file

@ -24,6 +24,7 @@ TypeReference convertTypeReference(DartType t) {
});
}
/// Determines if a type supports `package:angel_serialize`.
bool isModelClass(DartType t) {
if (t == null) return false;
@ -36,3 +37,10 @@ bool isModelClass(DartType t) {
return false;
}
}
/// Determines if a [DartType] is a `Map` with the second type argument being a `Model`.
bool isMapToModelType(InterfaceType t) {
return t.name == 'Map' &&
t.typeArguments.length == 2 &&
isModelClass(t.typeArguments[1]);
}

95
angel_serialize_generator/lib/serialize.dart
View file

@ -40,13 +40,12 @@ class SerializerGenerator extends GeneratorForAnnotation<Serializable> {
..abstract = true;
if (serializers.contains(Serializers.map)) {
// TODO: Generate fromMap
generateFromMapMethod(clazz, ctx, file);
}
if (serializers.contains(Serializers.map) ||
serializers.contains(Serializers.json)) {
generateToMapMethod(clazz, ctx, file);
// TODO: Generate toJson
}
}));
}
@ -80,27 +79,26 @@ class SerializerGenerator extends GeneratorForAnnotation<Serializable> {
// Serialize dates
if (dateTimeTypeChecker.isAssignableFromType(field.type))
serializedRepresentation = 'model.${field.name}.toIso8601String()';
serializedRepresentation = 'model.${field.name}?.toIso8601String()';
// Serialize model classes via `XSerializer.toMap`
else if (isModelClass(field.type)) {
var rc = new ReCase(field.type.name);
serializedRepresentation =
'${rc.pascalCase}Serializer.toMap(model.${field.name})';
}
else if (field.type is InterfaceType) {
} else if (field.type is InterfaceType) {
var t = field.type as InterfaceType;
if (t.name == 'List' && t.typeArguments.length == 1) {
var rc = new ReCase(t.typeArguments[0].name);
serializedRepresentation = 'model.${field.name}.map(${rc.pascalCase}Serializer.toMap).toList()';
}
else if (t.name == 'Map' && t.typeArguments.length == 2 && isModelClass(t.typeArguments[1])) {
serializedRepresentation = 'model.${field.name}?.map(${rc
.pascalCase}Serializer.toMap)?.toList()';
} else if (isMapToModelType(t)) {
var rc = new ReCase(t.typeArguments[1].name);
serializedRepresentation = '''model.${field.name}.keys.fold({}, (map, key) {
return map..[key] = ${rc.pascalCase}Serializer.toMap(model.${field.name}[key]);
serializedRepresentation =
'''model.${field.name}.keys?.fold({}, (map, key) {
return map..[key] = ${rc.pascalCase}Serializer.toMap(model.${field
.name}[key]);
})''';
}
}
@ -112,4 +110,77 @@ class SerializerGenerator extends GeneratorForAnnotation<Serializable> {
method.body = new Code(buf.toString());
}));
}
void generateFromMapMethod(
ClassBuilder clazz, BuildContext ctx, FileBuilder file) {
clazz.methods.add(new Method((method) {
method
..static = true
..name = 'fromMap'
..returns = ctx.modelClassType
..requiredParameters.add(
new Parameter((b) => b
..name = 'map'
..type = new Reference('Map')),
);
var buf = new StringBuffer('return new ${ctx.modelClassName}(');
int i = 0;
// Add named parameters
for (var field in ctx.fields) {
if (ctx.excluded[field.name] == true) continue;
var alias = ctx.resolveFieldName(field.name);
method.optionalParameters.add(new Parameter((b) {
b
..name = field.name
..named = true
..type = convertTypeReference(field.type);
}));
if (i++ > 0) buf.write(', ');
String deserializedRepresentation = "map['$alias']";
// Deserialize dates
if (dateTimeTypeChecker.isAssignableFromType(field.type))
deserializedRepresentation =
"map['$alias'] != null ? DateTime.parse(map['$alias']) : null";
// Serialize model classes via `XSerializer.toMap`
else if (isModelClass(field.type)) {
var rc = new ReCase(field.type.name);
deserializedRepresentation = "map['$alias'] != null"
" ? ${rc.pascalCase}Serializer.fromMap(map['$alias'])"
" : null";
} else if (field.type is InterfaceType) {
var t = field.type as InterfaceType;
if (t.name == 'List' && t.typeArguments.length == 1) {
var rc = new ReCase(t.typeArguments[0].name);
deserializedRepresentation = "map['$alias'] is Iterable"
" ? map['$alias'].map(${rc
.pascalCase}Serializer.fromMap).toList()"
" : null";
} else if (isMapToModelType(t)) {
var rc = new ReCase(t.typeArguments[1].name);
deserializedRepresentation = '''
map['$alias'] is Map
? map['$alias'].keys.fold({}, (out, key) {
return out..[key] = ${rc
.pascalCase}Serializer.fromMap(map['$alias'][key]);
})
: null
''';
}
}
buf.write('${field.name}: $deserializedRepresentation');
}
buf.write(');');
method.body = new Code(buf.toString());
}));
}
}

6
angel_serialize_generator/test/book_test.dart
View file

@ -66,7 +66,7 @@ main() {
group('deserialization', () {
test('deserialization sets proper fields', () {
var book = new Book.fromJson(deathlyHallowsMap);
var book = BookSerializer.fromMap(deathlyHallowsMap);
expect(book.id, deathlyHallows.id);
expect(book.author, deathlyHallows.author);
expect(book.description, deathlyHallows.description);
@ -76,7 +76,7 @@ main() {
});
group('nested @serializable', () {
var author = new Author.fromJson(serializedJkRowling);
var author = AuthorSerializer.fromMap(serializedJkRowling);
test('nested @serializable class is deserialized', () {
var newestBook = author.newestBook;
@ -98,7 +98,7 @@ main() {
});
test('map with @serializable class as second key is deserialized', () {
var lib = new Library.fromJson(serializedLibrary);
var lib = LibrarySerializer.fromMap(serializedLibrary);
expect(lib.collection, allOf(isNotEmpty, hasLength(1)));
expect(lib.collection.keys.first, deathlyHallowsIsbn);
var book = lib.collection[deathlyHallowsIsbn];

59
angel_serialize_generator/test/models/author.serializer.g.dart
View file

@ -7,28 +7,75 @@ part of angel_serialize.test.models.author;
// **************************************************************************
abstract class AuthorSerializer {
static Author fromMap(Map map,
{String id,
String name,
int age,
List<Book> books,
Book newestBook,
DateTime createdAt,
DateTime updatedAt}) {
return new Author(
id: map['id'],
name: map['name'],
age: map['age'],
books: map['books'] is Iterable
? map['books'].map(BookSerializer.fromMap).toList()
: null,
newestBook: map['newest_book'] != null
? BookSerializer.fromMap(map['newest_book'])
: null,
createdAt: map['created_at'] != null
? DateTime.parse(map['created_at'])
: null,
updatedAt: map['updated_at'] != null
? DateTime.parse(map['updated_at'])
: null);
}
static Map<String, dynamic> toMap(Author model) {
return {
'id': model.id,
'name': model.name,
'age': model.age,
'books': model.books.map(BookSerializer.toMap).toList(),
'books': model.books?.map(BookSerializer.toMap)?.toList(),
'newest_book': BookSerializer.toMap(model.newestBook),
'created_at': model.createdAt.toIso8601String(),
'updated_at': model.updatedAt.toIso8601String()
'created_at': model.createdAt?.toIso8601String(),
'updated_at': model.updatedAt?.toIso8601String()
};
}
}
abstract class LibrarySerializer {
static Library fromMap(Map map,
{String id,
Map<String, Book> collection,
DateTime createdAt,
DateTime updatedAt}) {
return new Library(
id: map['id'],
collection: map['collection'] is Map
? map['collection'].keys.fold({}, (out, key) {
return out
..[key] = BookSerializer.fromMap(map['collection'][key]);
})
: null,
createdAt: map['created_at'] != null
? DateTime.parse(map['created_at'])
: null,
updatedAt: map['updated_at'] != null
? DateTime.parse(map['updated_at'])
: null);
}
static Map<String, dynamic> toMap(Library model) {
return {
'id': model.id,
'collection': model.collection.keys.fold({}, (map, key) {
'collection': model.collection.keys?.fold({}, (map, key) {
return map..[key] = BookSerializer.toMap(model.collection[key]);
}),
'created_at': model.createdAt.toIso8601String(),
'updated_at': model.updatedAt.toIso8601String()
'created_at': model.createdAt?.toIso8601String(),
'updated_at': model.updatedAt?.toIso8601String()
};
}
}

26
angel_serialize_generator/test/models/book.serializer.g.dart
View file

@ -7,6 +7,28 @@ part of angel_serialize.test.models.book;
// **************************************************************************
abstract class BookSerializer {
static Book fromMap(Map map,
{String id,
String author,
String title,
String description,
int pageCount,
DateTime createdAt,
DateTime updatedAt}) {
return new Book(
id: map['id'],
author: map['author'],
title: map['title'],
description: map['description'],
pageCount: map['page_count'],
createdAt: map['created_at'] != null
? DateTime.parse(map['created_at'])
: null,
updatedAt: map['updated_at'] != null
? DateTime.parse(map['updated_at'])
: null);
}
static Map<String, dynamic> toMap(Book model) {
return {
'id': model.id,
@ -14,8 +36,8 @@ abstract class BookSerializer {
'title': model.title,
'description': model.description,
'page_count': model.pageCount,
'created_at': model.createdAt.toIso8601String(),
'updated_at': model.updatedAt.toIso8601String()
'created_at': model.createdAt?.toIso8601String(),
'updated_at': model.updatedAt?.toIso8601String()
};
}
}