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96c09d7179
Make the name lookup interfaces all take DeclNames instead of identifiers, and update the lookup caches of the various file units to index their members by both compound name and simple name. Serialized modules are keyed by identifiers, so as a transitional hack, do simple name lookup then filter the results by compound name. Swift SVN r14768
322 lines
11 KiB
C++
322 lines
11 KiB
C++
//===--- SerializedModuleLoader.cpp - Import Swift modules ----------------===//
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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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#include "swift/Serialization/SerializedModuleLoader.h"
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#include "swift/Serialization/ModuleFile.h"
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#include "swift/Strings.h"
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#include "swift/AST/AST.h"
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#include "swift/AST/DiagnosticsSema.h"
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#include "swift/Basic/STLExtras.h"
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#include "swift/Basic/SourceManager.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/system_error.h"
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using namespace swift;
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namespace {
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typedef std::pair<Identifier, SourceLoc> AccessPathElem;
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} // end unnamed namespace
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// Defined out-of-line so that we can see ~ModuleFile.
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SerializedModuleLoader::SerializedModuleLoader(ASTContext &ctx) : Ctx(ctx) {}
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SerializedModuleLoader::~SerializedModuleLoader() = default;
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static llvm::error_code findModule(ASTContext &ctx, AccessPathElem moduleID,
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std::unique_ptr<llvm::MemoryBuffer> &buffer,
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bool &isFramework) {
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llvm::SmallString<64> moduleFilename(moduleID.first.str());
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moduleFilename += '.';
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moduleFilename += SERIALIZED_MODULE_EXTENSION;
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llvm::SmallString<128> inputFilename;
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isFramework = false;
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for (auto path : ctx.SearchPathOpts.ImportSearchPaths) {
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inputFilename = path;
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llvm::sys::path::append(inputFilename, moduleFilename.str());
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auto err = llvm::MemoryBuffer::getFile(inputFilename.str(), buffer);
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if (!err || err.value() != llvm::errc::no_such_file_or_directory)
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return err;
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}
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llvm::SmallString<64> moduleFramework(moduleID.first.str());
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moduleFramework += ".framework";
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isFramework = true;
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// FIXME: Which name should we be using here? Do we care about CPU subtypes?
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// FIXME: At the very least, don't hardcode "arch".
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llvm::SmallString<16> archFilename(ctx.LangOpts.TargetConfigOptions["arch"]);
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if (!archFilename.empty()) {
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archFilename += '.';
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archFilename += SERIALIZED_MODULE_EXTENSION;
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}
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for (auto path : ctx.SearchPathOpts.FrameworkSearchPaths) {
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inputFilename = path;
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llvm::sys::path::append(inputFilename, moduleFramework.str(),
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moduleFilename.str(), archFilename.str());
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auto err = llvm::MemoryBuffer::getFile(inputFilename.str(), buffer);
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if (!err || err.value() != llvm::errc::no_such_file_or_directory)
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return err;
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}
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// Search the runtime import path.
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isFramework = false;
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inputFilename = ctx.SearchPathOpts.RuntimeLibraryImportPath;
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llvm::sys::path::append(inputFilename, moduleFilename.str());
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return llvm::MemoryBuffer::getFile(inputFilename.str(), buffer);
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}
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FileUnit *
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SerializedModuleLoader::loadAST(Module &M, Optional<SourceLoc> diagLoc,
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std::unique_ptr<llvm::MemoryBuffer> input,
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bool isFramework) {
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assert(input);
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std::unique_ptr<ModuleFile> loadedModuleFile;
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ModuleStatus err = ModuleFile::load(std::move(input), loadedModuleFile,
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isFramework);
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switch (err) {
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case ModuleStatus::Valid:
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Ctx.bumpGeneration();
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break;
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case ModuleStatus::FormatTooNew:
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if (diagLoc)
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Ctx.Diags.diagnose(*diagLoc, diag::serialization_module_too_new);
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return nullptr;
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case ModuleStatus::FormatTooOld:
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if (diagLoc)
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Ctx.Diags.diagnose(*diagLoc, diag::serialization_module_too_old);
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return nullptr;
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case ModuleStatus::Malformed:
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if (diagLoc)
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Ctx.Diags.diagnose(*diagLoc, diag::serialization_malformed_module);
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return nullptr;
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case ModuleStatus::MissingDependency:
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case ModuleStatus::MissingShadowedModule:
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llvm_unreachable("dependencies haven't been loaded yet");
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}
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// Create the FileUnit wrapper.
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auto fileUnit = new (Ctx) SerializedASTFile(M, *loadedModuleFile);
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M.addFile(*fileUnit);
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if (loadedModuleFile->associateWithFileContext(fileUnit)) {
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LoadedModuleFiles.emplace_back(std::move(loadedModuleFile),
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Ctx.getCurrentGeneration());
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return fileUnit;
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}
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// We failed to bring the module file into the AST.
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M.removeFile(*fileUnit);
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assert(loadedModuleFile->getStatus() == ModuleStatus::MissingDependency ||
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loadedModuleFile->getStatus() == ModuleStatus::MissingShadowedModule);
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if (!diagLoc)
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return nullptr;
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if (loadedModuleFile->getStatus() == ModuleStatus::MissingShadowedModule) {
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Ctx.Diags.diagnose(*diagLoc, diag::serialization_missing_shadowed_module,
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M.Name);
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if (Ctx.SearchPathOpts.SDKPath.empty()) {
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Ctx.Diags.diagnose(SourceLoc(), diag::sema_no_import_no_sdk);
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Ctx.Diags.diagnose(SourceLoc(), diag::sema_no_import_no_sdk_xcrun);
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}
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return nullptr;
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}
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// Figure out /which/ dependencies are missing.
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// FIXME: Dependencies should be de-duplicated at serialization time, not now.
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llvm::StringMap<bool> duplicates;
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llvm::SmallVector<ModuleFile::Dependency, 4> missing;
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std::copy_if(loadedModuleFile->getDependencies().begin(),
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loadedModuleFile->getDependencies().end(),
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std::back_inserter(missing),
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[&duplicates](const ModuleFile::Dependency &dependency) -> bool {
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if (dependency.isLoaded())
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return false;
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bool &seen = duplicates[dependency.RawAccessPath];
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if (seen)
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return false;
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seen = true;
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return true;
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});
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// FIXME: only show module part of RawAccessPath
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assert(!missing.empty() && "unknown missing dependency?");
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if (missing.size() == 1) {
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Ctx.Diags.diagnose(*diagLoc, diag::serialization_missing_single_dependency,
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missing.begin()->RawAccessPath);
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} else {
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llvm::SmallString<64> missingNames;
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missingNames += '\'';
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interleave(missing,
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[&](const ModuleFile::Dependency &next) {
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missingNames += next.RawAccessPath;
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},
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[&] { missingNames += "', '"; });
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missingNames += '\'';
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Ctx.Diags.diagnose(*diagLoc, diag::serialization_missing_dependencies,
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missingNames);
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}
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if (Ctx.SearchPathOpts.SDKPath.empty()) {
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Ctx.Diags.diagnose(SourceLoc(), diag::sema_no_import_no_sdk);
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Ctx.Diags.diagnose(SourceLoc(), diag::sema_no_import_no_sdk_xcrun);
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}
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return nullptr;
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}
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Module *SerializedModuleLoader::loadModule(SourceLoc importLoc,
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Module::AccessPathTy path) {
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// FIXME: Swift submodules?
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if (path.size() > 1)
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return nullptr;
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auto moduleID = path[0];
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bool isFramework = false;
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std::unique_ptr<llvm::MemoryBuffer> inputFile;
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// First see if we find it in the registered memory buffers.
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if (!MemoryBuffers.empty()) {
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// FIXME: Right now this works only with access paths of length 1.
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// Once submodules are designed, this needs to support suffix
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// matching and a search path.
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llvm::SmallString<256> spath;
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for (auto el : path)
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llvm::sys::path::append(spath, el.first.str());
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auto bs = MemoryBuffers.find(spath.str());
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if (bs != MemoryBuffers.end())
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inputFile.reset(bs->second.release());
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}
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// Otherwise look on disk.
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if (!inputFile) {
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if (llvm::error_code err = findModule(Ctx, moduleID, inputFile,
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isFramework)) {
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if (err.value() != llvm::errc::no_such_file_or_directory) {
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Ctx.Diags.diagnose(moduleID.second, diag::sema_opening_import,
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moduleID.first.str(), err.message());
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}
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return nullptr;
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}
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}
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assert(inputFile);
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auto M = Module::create(moduleID.first, Ctx);
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Ctx.LoadedModules[moduleID.first.str()] = M;
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(void)loadAST(*M, moduleID.second, std::move(inputFile), isFramework);
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return M;
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}
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void SerializedModuleLoader::loadExtensions(NominalTypeDecl *nominal,
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unsigned previousGeneration) {
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for (auto &modulePair : LoadedModuleFiles) {
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if (modulePair.second <= previousGeneration)
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continue;
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modulePair.first->loadExtensions(nominal);
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}
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}
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void
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SerializedModuleLoader::loadDeclsConformingTo(KnownProtocolKind kind,
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unsigned previousGeneration) {
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for (auto &modulePair : LoadedModuleFiles) {
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if (modulePair.second <= previousGeneration)
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continue;
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modulePair.first->loadDeclsConformingTo(kind);
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}
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}
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bool SerializedModuleLoader::isSerializedAST(StringRef data) {
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using serialization::SIGNATURE;
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StringRef signatureStr(reinterpret_cast<const char *>(SIGNATURE),
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llvm::array_lengthof(SIGNATURE));
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return data.startswith(signatureStr);
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}
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//-----------------------------------------------------------------------------
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// SerializedASTFile implementation
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//-----------------------------------------------------------------------------
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void SerializedASTFile::getImportedModules(
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SmallVectorImpl<Module::ImportedModule> &imports,
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Module::ImportFilter filter) const {
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File.getImportedModules(imports, filter);
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}
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void SerializedASTFile::collectLinkLibraries(
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Module::LinkLibraryCallback callback) const {
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File.collectLinkLibraries(callback);
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}
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bool SerializedASTFile::isSystemModule() const {
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if (auto Mod = File.getShadowedModule()) {
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return Mod->isSystemModule();
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}
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return false;
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}
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void SerializedASTFile::lookupValue(Module::AccessPathTy accessPath,
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DeclName name, NLKind lookupKind,
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SmallVectorImpl<ValueDecl*> &results) const{
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if (!Module::matchesAccessPath(accessPath, name))
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return;
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File.lookupValue(name, results);
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}
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OperatorDecl *SerializedASTFile::lookupOperator(Identifier name,
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DeclKind fixity) const {
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return File.lookupOperator(name, fixity);
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}
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void SerializedASTFile::lookupVisibleDecls(Module::AccessPathTy accessPath,
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VisibleDeclConsumer &consumer,
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NLKind lookupKind) const {
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File.lookupVisibleDecls(accessPath, consumer, lookupKind);
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}
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void SerializedASTFile::lookupClassMembers(Module::AccessPathTy accessPath,
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VisibleDeclConsumer &consumer) const{
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File.lookupClassMembers(accessPath, consumer);
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}
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void
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SerializedASTFile::lookupClassMember(Module::AccessPathTy accessPath,
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DeclName name,
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SmallVectorImpl<ValueDecl*> &decls) const {
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File.lookupClassMember(accessPath, name, decls);
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}
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void SerializedASTFile::getTopLevelDecls(SmallVectorImpl<Decl*> &results) const{
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File.getTopLevelDecls(results);
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}
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void SerializedASTFile::getDisplayDecls(SmallVectorImpl<Decl*> &results) const {
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File.getDisplayDecls(results);
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}
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StringRef SerializedASTFile::getFilename() const {
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return File.getModuleFilename();
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}
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