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89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
//===--- ModuleNameLookup.h - Name lookup within a module -------*- 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 - 2017 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 https://swift.org/LICENSE.txt for license information
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// See https://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 defines interfaces for performing top-level name lookup into a
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// set of imported modules.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SWIFT_AST_MODULE_NAME_LOOKUP_H
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#define SWIFT_AST_MODULE_NAME_LOOKUP_H
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#include "llvm/ADT/SmallVector.h"
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#include "swift/AST/Identifier.h"
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#include "swift/AST/Module.h"
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#include "swift/Basic/SourceLoc.h"
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namespace swift {
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class ValueDecl;
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namespace namelookup {
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enum class ResolutionKind {
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/// Lookup can match any number of decls, as long as they are all
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/// overloadable.
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///
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/// If non-overloadable decls are returned, this indicates ambiguous lookup.
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Overloadable,
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/// Lookup should match a single decl.
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Exact,
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/// Lookup should match a single decl that declares a type.
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TypesOnly
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};
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/// Performs a lookup into the given module and, if necessary, its
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/// reexports, observing proper shadowing rules.
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///
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/// \param module The module that will contain the name.
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/// \param accessPath The import scope on \p module.
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/// \param name The name to look up.
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/// \param[out] decls Any found decls will be added to this vector.
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/// \param lookupKind Whether this lookup is qualified or unqualified.
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/// \param resolutionKind What sort of decl is expected.
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/// \param moduleScopeContext The top-level context from which the lookup is
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/// being performed, for checking access. This must be either a
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/// FileUnit or a Module.
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/// \param extraImports Private imports to include in this search.
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void lookupInModule(ModuleDecl *module, ModuleDecl::AccessPathTy accessPath,
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DeclName name, SmallVectorImpl<ValueDecl *> &decls,
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NLKind lookupKind, ResolutionKind resolutionKind,
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const DeclContext *moduleScopeContext,
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ArrayRef<ModuleDecl::ImportedModule> extraImports = {});
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template <typename Fn>
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void forAllVisibleModules(const DeclContext *DC, const Fn &fn) {
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DeclContext *moduleScope = DC->getModuleScopeContext();
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if (auto file = dyn_cast<FileUnit>(moduleScope))
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file->forAllVisibleModules(fn);
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else
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cast<ModuleDecl>(moduleScope)
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->forAllVisibleModules(ModuleDecl::AccessPathTy(), fn);
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}
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/// Performs a qualified lookup into the given module and, if necessary, its
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/// reexports, observing proper shadowing rules.
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void
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lookupVisibleDeclsInModule(ModuleDecl *M, ModuleDecl::AccessPathTy accessPath,
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SmallVectorImpl<ValueDecl *> &decls,
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NLKind lookupKind,
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ResolutionKind resolutionKind,
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const DeclContext *moduleScopeContext,
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ArrayRef<ModuleDecl::ImportedModule> extraImports = {});
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} // end namespace namelookup
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} // end namespace swift
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#endif
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