angular-cn/modules_dart/analyzer_plugin/test/mock_sdk.dart

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library test.src.mock_sdk;
import 'package:analyzer/file_system/file_system.dart' as resource;
import 'package:analyzer/file_system/memory_file_system.dart' as resource;
import 'package:analyzer/src/context/cache.dart';
import 'package:analyzer/src/context/context.dart';
import 'package:analyzer/src/generated/engine.dart'
show AnalysisEngine, ChangeSet;
import 'package:analyzer/src/generated/sdk.dart';
import 'package:analyzer/src/generated/source.dart';
class MockSdk implements DartSdk {
static const _MockSdkLibrary LIB_CORE = const _MockSdkLibrary('dart:core',
'/lib/core/core.dart', '''
library dart.core;
import 'dart:async';
class Object {
bool operator ==(other) => identical(this, other);
String toString() => 'a string';
int get hashCode => 0;
}
class Function {}
class StackTrace {}
class Symbol {}
class Type {}
abstract class Comparable<T> {
int compareTo(T other);
}
abstract class String implements Comparable<String> {
external factory String.fromCharCodes(Iterable<int> charCodes,
[int start = 0, int end]);
bool get isEmpty => false;
bool get isNotEmpty => false;
int get length => 0;
String toUpperCase();
List<int> get codeUnits;
}
class bool extends Object {}
abstract class num implements Comparable<num> {
bool operator <(num other);
bool operator <=(num other);
bool operator >(num other);
bool operator >=(num other);
num operator +(num other);
num operator -(num other);
num operator *(num other);
num operator /(num other);
int toInt();
num abs();
int round();
}
abstract class int extends num {
bool get isEven => false;
int operator -();
external static int parse(String source,
{ int radix,
int onError(String source) });
}
class double extends num {}
class DateTime extends Object {}
class Null extends Object {}
class Deprecated extends Object {
final String expires;
const Deprecated(this.expires);
}
const Object deprecated = const Deprecated("next release");
class Iterator<E> {
bool moveNext();
E get current;
}
abstract class Iterable<E> {
Iterator<E> get iterator;
bool get isEmpty;
}
abstract class List<E> implements Iterable<E> {
void add(E value);
E operator [](int index);
void operator []=(int index, E value);
Iterator<E> get iterator => null;
void clear();
}
abstract class Map<K, V> extends Object {
Iterable<K> get keys;
}
external bool identical(Object a, Object b);
void print(Object object) {}
class _Override {
const _Override();
}
const Object override = const _Override();
''');
static const _MockSdkLibrary LIB_ASYNC = const _MockSdkLibrary('dart:async',
'/lib/async/async.dart', '''
library dart.async;
import 'dart:math';
class Future<T> {
factory Future.delayed(Duration duration, [T computation()]) => null;
factory Future.value([value]) => null;
static Future wait(List<Future> futures) => null;
}
class Stream<T> {}
abstract class StreamTransformer<S, T> {}
''');
static const _MockSdkLibrary LIB_COLLECTION = const _MockSdkLibrary(
'dart:collection', '/lib/collection/collection.dart', '''
library dart.collection;
abstract class HashMap<K, V> implements Map<K, V> {}
''');
static const _MockSdkLibrary LIB_CONVERT = const _MockSdkLibrary(
'dart:convert', '/lib/convert/convert.dart', '''
library dart.convert;
import 'dart:async';
abstract class Converter<S, T> implements StreamTransformer {}
class JsonDecoder extends Converter<String, Object> {}
''');
static const _MockSdkLibrary LIB_MATH = const _MockSdkLibrary('dart:math',
'/lib/math/math.dart', '''
library dart.math;
const double E = 2.718281828459045;
const double PI = 3.1415926535897932;
const double LN10 = 2.302585092994046;
num min(num a, num b) => 0;
num max(num a, num b) => 0;
external double cos(num x);
external double sin(num x);
external double sqrt(num x);
class Random {
bool nextBool() => true;
double nextDouble() => 2.0;
int nextInt() => 1;
}
''');
static const _MockSdkLibrary LIB_HTML = const _MockSdkLibrary('dart:html',
'/lib/html/dartium/html_dartium.dart', '''
library dart.html;
class HtmlElement {}
''');
static const List<SdkLibrary> LIBRARIES = const [
LIB_CORE,
LIB_ASYNC,
LIB_COLLECTION,
LIB_CONVERT,
LIB_MATH,
LIB_HTML,
];
final resource.MemoryResourceProvider provider =
new resource.MemoryResourceProvider();
/**
* The [AnalysisContext] which is used for all of the sources.
*/
AnalysisContextImpl _analysisContext;
MockSdk() {
LIBRARIES.forEach((_MockSdkLibrary library) {
provider.newFile(library.path, library.content);
});
}
@override
AnalysisContextImpl get context {
if (_analysisContext == null) {
_analysisContext = new _SdkAnalysisContext(this);
SourceFactory factory = new SourceFactory([new DartUriResolver(this)]);
_analysisContext.sourceFactory = factory;
ChangeSet changeSet = new ChangeSet();
for (String uri in uris) {
Source source = factory.forUri(uri);
changeSet.addedSource(source);
}
_analysisContext.applyChanges(changeSet);
}
return _analysisContext;
}
@override
List<SdkLibrary> get sdkLibraries => LIBRARIES;
@override
String get sdkVersion => throw unimplemented;
UnimplementedError get unimplemented => new UnimplementedError();
@override
List<String> get uris {
List<String> uris = <String>[];
for (SdkLibrary library in LIBRARIES) {
uris.add(library.shortName);
}
return uris;
}
@override
Source fromFileUri(Uri uri) {
String filePath = uri.path;
String libPath = '/lib';
if (!filePath.startsWith("$libPath/")) {
return null;
}
for (SdkLibrary library in LIBRARIES) {
String libraryPath = library.path;
if (filePath.replaceAll('\\', '/') == libraryPath) {
try {
resource.File file = provider.getResource(uri.path);
Uri dartUri = Uri.parse(library.shortName);
return file.createSource(dartUri);
} catch (exception) {
return null;
}
}
if (filePath.startsWith("$libraryPath/")) {
String pathInLibrary = filePath.substring(libraryPath.length + 1);
String path = '${library.shortName}/${pathInLibrary}';
try {
resource.File file = provider.getResource(uri.path);
Uri dartUri = new Uri(scheme: 'dart', path: path);
return file.createSource(dartUri);
} catch (exception) {
return null;
}
}
}
return null;
}
@override
SdkLibrary getSdkLibrary(String dartUri) {
// getSdkLibrary() is only used to determine whether a library is internal
// to the SDK. The mock SDK doesn't have any internals, so it's safe to
// return null.
return null;
}
@override
Source mapDartUri(String dartUri) {
const Map<String, String> uriToPath = const {
"dart:core": "/lib/core/core.dart",
"dart:html": "/lib/html/dartium/html_dartium.dart",
"dart:async": "/lib/async/async.dart",
"dart:collection": "/lib/collection/collection.dart",
"dart:convert": "/lib/convert/convert.dart",
"dart:math": "/lib/math/math.dart"
};
String path = uriToPath[dartUri];
if (path != null) {
resource.File file = provider.getResource(path);
Uri uri = new Uri(scheme: 'dart', path: dartUri.substring(5));
return file.createSource(uri);
}
// If we reach here then we tried to use a dartUri that's not in the
// table above.
return null;
}
}
class _MockSdkLibrary implements SdkLibrary {
final String shortName;
final String path;
final String content;
const _MockSdkLibrary(this.shortName, this.path, this.content);
@override
String get category => throw unimplemented;
@override
bool get isDart2JsLibrary => throw unimplemented;
@override
bool get isDocumented => throw unimplemented;
@override
bool get isImplementation => throw unimplemented;
@override
bool get isInternal => throw unimplemented;
@override
bool get isShared => throw unimplemented;
@override
bool get isVmLibrary => throw unimplemented;
UnimplementedError get unimplemented => new UnimplementedError();
}
/**
* An [AnalysisContextImpl] that only contains sources for a Dart SDK.
*/
class _SdkAnalysisContext extends AnalysisContextImpl {
final DartSdk sdk;
_SdkAnalysisContext(this.sdk);
@override
AnalysisCache createCacheFromSourceFactory(SourceFactory factory) {
if (factory == null) {
return super.createCacheFromSourceFactory(factory);
}
return new AnalysisCache(<CachePartition>[
AnalysisEngine.instance.partitionManager_new.forSdk(sdk)
]);
}
}