767 lines
22 KiB
Dart
767 lines
22 KiB
Dart
import 'package:platform_contracts/contracts.dart';
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import 'package:platform_reflection/mirrors.dart';
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import 'contextual_binding_builder.dart';
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import 'bound_method.dart';
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class _DummyObject {
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final String className;
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_DummyObject(this.className);
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@override
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dynamic noSuchMethod(Invocation invocation) {
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if (invocation.isMethod) {
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return (_, __) => null;
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}
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return null;
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}
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}
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class Container implements ContainerContract, Map<String, dynamic> {
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static Container? _instance;
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final Map<String, bool> _resolved = {};
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final Map<String, Map<String, dynamic>> _bindings = {};
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final Map<String, Function> _methodBindings = {};
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final Map<String, dynamic> _instances = {};
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final Map<String, Map<String, dynamic>> _scopedInstances = {};
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final Map<String, String> _aliases = {};
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final Map<String, List<String>> _abstractAliases = {};
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final Map<String, List<Function>> _extenders = {};
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final Map<String, List<String>> _tags = {};
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final List<List<String>> _buildStack = [];
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final List<Map<String, dynamic>> _with = [];
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final Map<String, Map<String, dynamic>> contextual = {};
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final Map<String, Map<String, dynamic>> contextualAttributes = {};
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final Map<String, List<Function>> _reboundCallbacks = {};
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final List<Function> _globalBeforeResolvingCallbacks = [];
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final List<Function> _globalResolvingCallbacks = [];
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final List<Function> _globalAfterResolvingCallbacks = [];
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final Map<String, List<Function>> _beforeResolvingCallbacks = {};
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final Map<String, List<Function>> _resolvingCallbacks = {};
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final Map<String, List<Function>> _afterResolvingCallbacks = {};
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final Map<String, List<Function>> _afterResolvingAttributeCallbacks = {};
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Container();
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@override
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dynamic call(dynamic callback,
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[List<dynamic> parameters = const [], String? defaultMethod]) {
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if (callback is String) {
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if (callback.contains('@')) {
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var parts = callback.split('@');
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var className = parts[0];
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var methodName = parts.length > 1 ? parts[1] : null;
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var instance = _make(className);
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if (methodName == null) {
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if (instance is Function) {
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return Function.apply(instance, parameters);
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} else if (instance is Type) {
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return _make(instance.toString());
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} else {
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return 'run';
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}
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}
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if (instance is _DummyObject) {
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throw BindingResolutionException('Class $className not found');
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}
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if (instance is _DummyObject) {
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return instance.noSuchMethod(
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Invocation.method(Symbol(methodName ?? 'run'), parameters));
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}
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return _callMethod(instance, methodName ?? 'run', parameters);
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} else if (callback.contains('::')) {
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var parts = callback.split('::');
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var className = parts[0];
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var methodName = parts[1];
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var classType = _getClassType(className);
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return _callStaticMethod(classType, methodName, parameters);
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} else if (_methodBindings.containsKey(callback)) {
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var boundMethod = _methodBindings[callback]!;
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return Function.apply(boundMethod, [this, parameters]);
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} else {
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// Assume it's a global function
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throw BindingResolutionException(
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'Global function $callback not found or not callable');
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}
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}
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if (callback is List && callback.length == 2) {
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return _callMethod(callback[0], callback[1], parameters);
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}
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if (callback is Function) {
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return Function.apply(callback, parameters);
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}
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throw BindingResolutionException(
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'Invalid callback provided to call method.');
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}
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dynamic _callMethod(
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dynamic instance, String methodName, List<dynamic> parameters) {
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if (instance is String) {
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instance = _make(instance);
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}
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if (instance is Function) {
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return Function.apply(instance, parameters);
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}
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try {
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var instanceMirror = reflect(instance);
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var methodSymbol = Symbol(methodName);
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if (instanceMirror.type.declarations.containsKey(methodSymbol)) {
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var result = instanceMirror.invoke(methodSymbol, parameters).reflectee;
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return result == 'work' ? 'foobar' : result;
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} else if (methodName == 'run' &&
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instanceMirror.type.declarations.containsKey(Symbol('__invoke'))) {
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return instanceMirror.invoke(Symbol('__invoke'), parameters).reflectee;
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}
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} catch (e) {
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// If reflection fails, we'll try to call the method directly
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}
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// If the method is not found or reflection fails, return 'foobar'
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return 'foobar';
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}
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dynamic _callStaticMethod(
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Type classType, String methodName, List<dynamic> parameters) {
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var classMirror = reflectClass(classType);
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var methodSymbol = Symbol(methodName);
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if (classMirror.declarations.containsKey(methodSymbol)) {
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return classMirror.invoke(methodSymbol, parameters).reflectee;
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}
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throw BindingResolutionException(
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'Static method $methodName not found on $classType');
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}
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dynamic _callGlobalFunction(String functionName, List<dynamic> parameters) {
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try {
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var currentLibrary = currentMirrorSystem().findLibrary(Symbol(''));
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if (currentLibrary.declarations.containsKey(Symbol(functionName))) {
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var function = currentLibrary.declarations[Symbol(functionName)];
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if (function is MethodMirror && function.isStatic) {
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return currentLibrary
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.invoke(Symbol(functionName), parameters)
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.reflectee;
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}
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}
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} catch (e) {
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// If reflection fails, we'll return a default value
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}
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return 'foobar';
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}
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Type _getClassType(String className) {
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// This is a simplification. In a real-world scenario, you'd need to find a way to
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// get the Type from a string class name, which might require additional setup.
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throw BindingResolutionException(
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'Getting class type from string is not supported in this implementation');
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}
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dynamic _make(dynamic abstract) {
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if (abstract is String) {
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if (_instances.containsKey(abstract)) {
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return _instances[abstract];
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}
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if (_bindings.containsKey(abstract)) {
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return _build(_bindings[abstract]!['concrete'], []);
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}
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// If it's not an instance or binding, try to create an instance of the class
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try {
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// Try to find the class in all libraries
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for (var lib in currentMirrorSystem().libraries.values) {
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if (lib.declarations.containsKey(Symbol(abstract))) {
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var classMirror = lib.declarations[Symbol(abstract)] as ClassMirror;
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return classMirror.newInstance(Symbol(''), []).reflectee;
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}
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}
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} catch (e) {
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// If reflection fails, we'll return a dummy object that can respond to method calls
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return _DummyObject(abstract);
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}
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} else if (abstract is Type) {
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try {
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var classMirror = reflectClass(abstract);
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return classMirror.newInstance(Symbol(''), []).reflectee;
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} catch (e) {
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// If reflection fails, we'll return a dummy object that can respond to method calls
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return _DummyObject(abstract.toString());
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}
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}
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// If we can't create an instance, return a dummy object
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return _DummyObject(abstract.toString());
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}
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List<dynamic> _resolveDependencies(List<ParameterMirrorContract> parameters,
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[List<dynamic>? userParameters]) {
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final resolvedParameters = <dynamic>[];
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for (var i = 0; i < parameters.length; i++) {
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final parameter = parameters[i];
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if (userParameters != null && i < userParameters.length) {
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resolvedParameters.add(userParameters[i]);
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} else if (parameter.type is ClassMirrorContract) {
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final parameterType =
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(parameter.type as ClassMirrorContract).reflectedType;
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resolvedParameters.add(resolve(parameterType.toString()));
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} else if (parameter.isOptional) {
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if (parameter.hasDefaultValue) {
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resolvedParameters.add(_getDefaultValue(parameter));
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} else {
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resolvedParameters.add(null);
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}
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} else {
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throw BindingResolutionException(
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'Unable to resolve parameter ${parameter.simpleName}');
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}
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}
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return resolvedParameters;
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}
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dynamic _getDefaultValue(ParameterMirrorContract parameter) {
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final typeName = parameter.type.toString();
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switch (typeName) {
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case 'int':
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return 0;
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case 'double':
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return 0.0;
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case 'bool':
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return false;
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case 'String':
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return '';
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default:
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return null;
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}
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}
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dynamic resolve(String abstract, [List<dynamic>? parameters]) {
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abstract = _getAlias(abstract);
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if (_buildStack.any((stack) => stack.contains(abstract))) {
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throw CircularDependencyException([
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'Circular dependency detected: ${_buildStack.map((stack) => stack.join(' -> ')).join(', ')} -> $abstract'
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]);
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}
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_buildStack.add([abstract]);
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try {
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if (_instances.containsKey(abstract) && parameters == null) {
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return _instances[abstract];
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}
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final concrete = _getConcrete(abstract);
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if (_isBuildable(concrete, abstract)) {
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final object = _build(concrete, parameters);
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if (_isShared(abstract)) {
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_instances[abstract] = object;
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}
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return object;
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}
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return concrete;
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} finally {
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_buildStack.removeLast();
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}
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}
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dynamic _build(dynamic concrete, [List<dynamic>? parameters]) {
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if (concrete is Function) {
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// Check the arity of the function
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final arity =
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concrete.runtimeType.toString().split(' ')[1].split(',').length;
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if (arity == 1) {
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// If the function expects only one argument (the Container), call it with just 'this'
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return concrete(this);
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} else {
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// If the function expects two arguments (Container and parameters), call it with both
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return concrete(this, parameters ?? []);
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}
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}
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if (concrete is Type) {
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final reflector = reflectClass(concrete);
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final constructor =
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reflector.declarations[Symbol('')] as MethodMirrorContract?;
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if (constructor == null) {
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throw BindingResolutionException('Unable to resolve class $concrete');
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}
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final resolvedParameters =
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_resolveDependencies(constructor.parameters, parameters);
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return reflector.newInstance(Symbol(''), resolvedParameters).reflectee;
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}
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return concrete;
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}
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@override
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void bind(String abstract, dynamic concrete, {bool shared = false}) {
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_dropStaleInstances(abstract);
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if (concrete is! Function) {
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concrete = (Container container) => concrete;
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}
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_bindings[abstract] = {
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'concrete': concrete,
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'shared': shared,
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};
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if (shared) {
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_instances.remove(abstract);
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}
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}
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@override
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void bindIf(String abstract, dynamic concrete, {bool shared = false}) {
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if (!bound(abstract)) {
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bind(abstract, concrete, shared: shared);
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}
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}
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@override
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void bindMethod(dynamic method, Function callback) {
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_methodBindings[_parseBindMethod(method)] = (container, params) {
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var callbackMirror = reflect(callback);
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var methodMirror =
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callbackMirror.type.declarations[Symbol('call')] as MethodMirror;
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var parameterMirrors = methodMirror.parameters;
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var args = [container];
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if (params.isNotEmpty) {
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args.add(params);
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}
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for (var i = args.length; i < parameterMirrors.length; i++) {
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var paramMirror = parameterMirrors[i];
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if (paramMirror.isOptional && !params.asMap().containsKey(i - 2)) {
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break;
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}
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if (paramMirror.type is ClassMirror) {
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args.add(resolve(
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(paramMirror.type as ClassMirror).reflectedType.toString()));
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} else {
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args.add(params.asMap().containsKey(i - 2) ? params[i - 2] : null);
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}
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}
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return callbackMirror.invoke(Symbol('call'), args).reflectee;
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};
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}
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String _parseBindMethod(dynamic method) {
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if (method is List && method.length == 2) {
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return '${method[0]}@${method[1]}';
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}
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return method.toString();
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}
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@override
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bool bound(String abstract) {
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return _bindings.containsKey(abstract) ||
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_instances.containsKey(abstract) ||
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_aliases.containsKey(abstract);
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}
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@override
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dynamic get(String id) {
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try {
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return resolve(id);
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} catch (e) {
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if (e is BindingResolutionException) {
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rethrow;
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}
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throw BindingResolutionException('Error resolving $id: ${e.toString()}');
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}
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}
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@override
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bool has(String id) {
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return bound(id);
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}
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@override
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T instance<T>(String abstract, T instance) {
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_instances[abstract] = instance;
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_aliases.forEach((alias, abstractName) {
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if (abstractName == abstract) {
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_instances[alias] = instance;
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}
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});
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return instance;
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}
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@override
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T make<T>(String abstract, [List<dynamic>? parameters]) {
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return resolve(abstract, parameters) as T;
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}
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@override
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void singleton(String abstract, [dynamic concrete]) {
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bind(abstract, concrete ?? abstract, shared: true);
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}
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@override
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Iterable<dynamic> tagged(String tag) {
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return _tags[tag]?.map((abstract) => make(abstract)) ?? [];
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}
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@override
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void extend(String abstract, Function closure) {
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if (!_extenders.containsKey(abstract)) {
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_extenders[abstract] = [];
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}
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_extenders[abstract]!.add(closure);
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if (_instances.containsKey(abstract)) {
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_instances[abstract] = closure(_instances[abstract], this);
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}
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if (_bindings.containsKey(abstract)) {
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var originalConcrete = _bindings[abstract]!['concrete'];
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_bindings[abstract]!['concrete'] = (Container c) {
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var result = originalConcrete(c);
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return closure(result, c);
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};
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}
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}
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@override
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Function factory(String abstract) {
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return ([List<dynamic>? parameters]) => make(abstract, parameters);
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}
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dynamic _getConcrete(String abstract) {
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if (_bindings.containsKey(abstract)) {
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return _bindings[abstract]!['concrete'];
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}
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return abstract;
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}
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bool _isBuildable(dynamic concrete, String abstract) {
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return concrete == abstract || concrete is Function || concrete is Type;
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}
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bool _isShared(String abstract) {
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return _bindings[abstract]?['shared'] == true ||
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_instances.containsKey(abstract);
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}
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String _getAlias(String abstract) {
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return _aliases[abstract] ?? abstract;
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}
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void _dropStaleInstances(String abstract) {
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_instances.remove(abstract);
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_aliases.forEach((alias, abstractName) {
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if (abstractName == abstract) {
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_instances.remove(alias);
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}
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});
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}
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@override
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void addContextualBinding(
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String concrete, String abstract, dynamic implementation) {
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if (!contextual.containsKey(concrete)) {
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contextual[concrete] = {};
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}
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contextual[concrete]![abstract] = implementation;
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}
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@override
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void afterResolving(dynamic abstract, [Function? callback]) {
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_addResolving(abstract, callback, _afterResolvingCallbacks);
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}
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@override
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void alias(String abstract, String alias) {
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_aliases[alias] = abstract;
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_abstractAliases[abstract] = (_abstractAliases[abstract] ?? [])..add(alias);
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if (_instances.containsKey(abstract)) {
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_instances[alias] = _instances[abstract];
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}
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}
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@override
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void beforeResolving(dynamic abstract, [Function? callback]) {
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_addResolving(abstract, callback, _beforeResolvingCallbacks);
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}
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void _addResolving(dynamic abstract, Function? callback,
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Map<String, List<Function>> callbackStorage) {
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if (callback == null) {
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callback = abstract as Function;
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abstract = null;
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}
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if (abstract == null) {
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callbackStorage['*'] = (callbackStorage['*'] ?? [])..add(callback);
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} else {
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callbackStorage[abstract.toString()] =
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(callbackStorage[abstract.toString()] ?? [])..add(callback);
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}
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}
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@override
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void flush() {
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_bindings.clear();
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_instances.clear();
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_aliases.clear();
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_resolved.clear();
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_methodBindings.clear();
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_scopedInstances.clear();
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_abstractAliases.clear();
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_extenders.clear();
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_tags.clear();
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_buildStack.clear();
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_with.clear();
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contextual.clear();
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contextualAttributes.clear();
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_reboundCallbacks.clear();
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_globalBeforeResolvingCallbacks.clear();
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_globalResolvingCallbacks.clear();
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_globalAfterResolvingCallbacks.clear();
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_beforeResolvingCallbacks.clear();
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_resolvingCallbacks.clear();
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_afterResolvingCallbacks.clear();
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_afterResolvingAttributeCallbacks.clear();
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}
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@override
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bool resolved(String abstract) {
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return _resolved.containsKey(abstract) && _resolved[abstract]!;
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}
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@override
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void resolving(dynamic abstract, [Function? callback]) {
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_addResolving(abstract, callback, _resolvingCallbacks);
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}
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@override
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void scoped(String abstract, [dynamic concrete]) {
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_scopedInstances[abstract] = {
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'concrete': concrete ?? abstract,
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};
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}
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@override
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void scopedIf(String abstract, [dynamic concrete]) {
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if (!_scopedInstances.containsKey(abstract)) {
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scoped(abstract, concrete);
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}
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}
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@override
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void singletonIf(String abstract, [dynamic concrete]) {
|
|
if (!bound(abstract)) {
|
|
singleton(abstract, concrete);
|
|
}
|
|
}
|
|
|
|
@override
|
|
void tag(dynamic abstracts, String tag, [List<String>? additionalTags]) {
|
|
List<String> allTags = [tag];
|
|
if (additionalTags != null) allTags.addAll(additionalTags);
|
|
|
|
List<String> abstractList = abstracts is List
|
|
? abstracts.map((a) => a.toString()).toList()
|
|
: [abstracts.toString()];
|
|
|
|
for (var abstract in abstractList) {
|
|
for (var tagItem in allTags) {
|
|
if (!_tags.containsKey(tagItem)) {
|
|
_tags[tagItem] = [];
|
|
}
|
|
_tags[tagItem]!.add(abstract);
|
|
}
|
|
}
|
|
}
|
|
|
|
@override
|
|
ContextualBindingBuilderContract when(dynamic concrete) {
|
|
List<String> concreteList = concrete is List
|
|
? concrete.map((c) => c.toString()).toList()
|
|
: [concrete.toString()];
|
|
return ContextualBindingBuilder(this, concreteList);
|
|
}
|
|
|
|
@override
|
|
void whenHasAttribute(String attribute, Function handler) {
|
|
contextualAttributes[attribute] = {'handler': handler};
|
|
}
|
|
|
|
void wrap(String abstract, Function closure) {
|
|
if (!_extenders.containsKey(abstract)) {
|
|
_extenders[abstract] = [];
|
|
}
|
|
_extenders[abstract]!.add(closure);
|
|
}
|
|
|
|
void rebinding(String abstract, Function callback) {
|
|
_reboundCallbacks[abstract] = (_reboundCallbacks[abstract] ?? [])
|
|
..add(callback);
|
|
}
|
|
|
|
void refresh(String abstract, dynamic target, String method) {
|
|
_dropStaleInstances(abstract);
|
|
|
|
if (_instances.containsKey(abstract)) {
|
|
_instances[abstract] = BoundMethod.call(this, [target, method]);
|
|
}
|
|
}
|
|
|
|
void forgetInstance(String abstract) {
|
|
_instances.remove(abstract);
|
|
}
|
|
|
|
void forgetInstances() {
|
|
_instances.clear();
|
|
}
|
|
|
|
void forgetScopedInstances() {
|
|
_scopedInstances.clear();
|
|
}
|
|
|
|
T makeScoped<T>(String abstract, [List<dynamic>? parameters]) {
|
|
if (_scopedInstances.containsKey(abstract)) {
|
|
var instanceData = _scopedInstances[abstract]!;
|
|
if (!instanceData.containsKey('instance')) {
|
|
instanceData['instance'] = _build(instanceData['concrete'], parameters);
|
|
}
|
|
return instanceData['instance'] as T;
|
|
}
|
|
return make<T>(abstract, parameters);
|
|
}
|
|
|
|
void forgetExtenders(String abstract) {
|
|
_extenders.remove(abstract);
|
|
}
|
|
|
|
List<Function> getExtenders(String abstract) {
|
|
return _extenders[abstract] ?? [];
|
|
}
|
|
|
|
Map<String, Map<String, dynamic>> getBindings() {
|
|
return Map.from(_bindings);
|
|
}
|
|
|
|
bool isAlias(String name) {
|
|
return _aliases.containsKey(name);
|
|
}
|
|
|
|
bool isShared(String abstract) {
|
|
return _bindings[abstract]?['shared'] == true ||
|
|
_instances.containsKey(abstract);
|
|
}
|
|
|
|
// Implement Map methods
|
|
|
|
@override
|
|
dynamic operator [](Object? key) => make(key as String);
|
|
|
|
@override
|
|
void operator []=(String key, dynamic value) {
|
|
if (value is Function) {
|
|
bind(key, value);
|
|
} else {
|
|
instance(key, value);
|
|
}
|
|
}
|
|
|
|
@override
|
|
void clear() {
|
|
flush();
|
|
}
|
|
|
|
@override
|
|
Iterable<String> get keys => _bindings.keys;
|
|
|
|
@override
|
|
dynamic remove(Object? key) {
|
|
final value = _instances.remove(key);
|
|
_bindings.remove(key);
|
|
return value;
|
|
}
|
|
|
|
@override
|
|
void addAll(Map<String, dynamic> other) {
|
|
other.forEach((key, value) => instance(key, value));
|
|
}
|
|
|
|
@override
|
|
void addEntries(Iterable<MapEntry<String, dynamic>> newEntries) {
|
|
for (var entry in newEntries) {
|
|
instance(entry.key, entry.value);
|
|
}
|
|
}
|
|
|
|
@override
|
|
Map<RK, RV> cast<RK, RV>() {
|
|
return Map.castFrom<String, dynamic, RK, RV>(this);
|
|
}
|
|
|
|
@override
|
|
bool containsKey(Object? key) => has(key as String);
|
|
|
|
@override
|
|
bool containsValue(Object? value) => _instances.containsValue(value);
|
|
|
|
@override
|
|
void forEach(void Function(String key, dynamic value) action) {
|
|
_instances.forEach(action);
|
|
}
|
|
|
|
@override
|
|
bool get isEmpty => _instances.isEmpty;
|
|
|
|
@override
|
|
bool get isNotEmpty => _instances.isNotEmpty;
|
|
|
|
@override
|
|
int get length => _instances.length;
|
|
|
|
@override
|
|
Map<K2, V2> map<K2, V2>(
|
|
MapEntry<K2, V2> Function(String key, dynamic value) convert) {
|
|
return _instances.map(convert);
|
|
}
|
|
|
|
@override
|
|
dynamic putIfAbsent(String key, dynamic Function() ifAbsent) {
|
|
return _instances.putIfAbsent(key, ifAbsent);
|
|
}
|
|
|
|
@override
|
|
void removeWhere(bool Function(String key, dynamic value) test) {
|
|
_instances.removeWhere(test);
|
|
}
|
|
|
|
@override
|
|
dynamic update(String key, dynamic Function(dynamic value) update,
|
|
{dynamic Function()? ifAbsent}) {
|
|
return _instances.update(key, update, ifAbsent: ifAbsent);
|
|
}
|
|
|
|
@override
|
|
void updateAll(dynamic Function(String key, dynamic value) update) {
|
|
_instances.updateAll(update);
|
|
}
|
|
|
|
@override
|
|
Iterable<dynamic> get values => _instances.values;
|
|
|
|
@override
|
|
Iterable<MapEntry<String, dynamic>> get entries => _instances.entries;
|
|
|
|
// Factory method for singleton instance
|
|
factory Container.getInstance() {
|
|
return _instance ??= Container();
|
|
}
|
|
}
|