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b27e88b70b
Include a mapping from Objective-C selectors to the @objc methods that
produce Objective-c methods with those selectors. Use this to lazily
populate the Objective-C method lookup tables in each class. This makes
@objc override checking work across Swift modules, which is part of
rdar://problem/18391046.
Note that we use a single, unified selector table, both because it is
simpler and because it makes global queries ("is there any method with
the given selector?") easier.
Swift SVN r23214
115 lines
3.8 KiB
C++
115 lines
3.8 KiB
C++
//===--- ModuleLoader.h - Module Loader Interface ----------- -*- C++ -*- -===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2015 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements an abstract interface for loading modules.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_AST_MODULE_LOADER_H
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#define SWIFT_AST_MODULE_LOADER_H
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#include "swift/AST/Identifier.h"
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#include "swift/Basic/LLVM.h"
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#include "swift/Basic/SourceLoc.h"
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#include "llvm/ADT/TinyPtrVector.h"
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namespace swift {
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class AbstractFunctionDecl;
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class ClassDecl;
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class Module;
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class NominalTypeDecl;
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enum class KnownProtocolKind : uint8_t;
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class DependencyTracker {
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virtual void anchor();
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protected:
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DependencyTracker() = default;
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public:
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virtual ~DependencyTracker() = default;
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virtual void addDependency(StringRef file) {}
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};
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/// \brief Abstract interface that loads named modules into the AST.
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class ModuleLoader {
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DependencyTracker * const dependencyTracker;
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virtual void anchor();
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protected:
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ModuleLoader(DependencyTracker *tracker) : dependencyTracker(tracker) {}
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void addDependency(StringRef file) {
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if (dependencyTracker)
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dependencyTracker->addDependency(file);
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}
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public:
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virtual ~ModuleLoader() = default;
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/// \brief Import a module with the given module path.
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///
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/// \param importLoc The location of the 'import' keyword.
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///
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/// \param path A sequence of (identifier, location) pairs that denote
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/// the dotted module name to load, e.g., AppKit.NSWindow.
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///
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/// \returns the module referenced, if it could be loaded. Otherwise,
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/// emits a diagnostic and returns NULL.
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virtual
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Module *loadModule(SourceLoc importLoc,
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ArrayRef<std::pair<Identifier, SourceLoc>> path) = 0;
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/// \brief Load extensions to the given nominal type.
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///
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/// \param nominal The nominal type whose extensions should be loaded.
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///
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/// \param previousGeneration The previous generation number. The AST already
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/// contains extensions loaded from any generation up to and including this
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/// one.
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virtual void loadExtensions(NominalTypeDecl *nominal,
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unsigned previousGeneration) { }
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/// \brief Load the methods within the given class that that produce
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/// Objective-C class or instance methods with the given selector.
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///
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/// \param classDecl The class in which we are searching for @objc methods.
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/// The search only considers this class and its extensions; not any
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/// superclasses.
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///
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/// \param selector The selector to search for.
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///
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/// \param isInstanceMethod Whether we are looking for an instance method
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/// (vs. a class method).
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///
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/// \param previousGeneration The previous generation with which this
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/// callback was invoked. The list of methods will already contain all of
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/// the results from generations up and and including \c previousGeneration.
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///
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/// \param methods The list of @objc methods in this class that have this
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/// selector and are instance/class methods as requested. This list will be
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/// extended with any methods found in subsequent generations.
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virtual void loadObjCMethods(
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ClassDecl *classDecl,
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ObjCSelector selector,
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bool isInstanceMethod,
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unsigned previousGeneration,
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llvm::TinyPtrVector<AbstractFunctionDecl *> &methods) { }
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/// \brief Verify all modules loaded by this loader.
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virtual void verifyAllModules() { }
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};
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} // namespace swift
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#endif
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