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86 lines
2.6 KiB
C++
86 lines
2.6 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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namespace swift {
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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 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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