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de2ecbb80e
The "Tool" abstraction wasn't buying us enough to deserve the added complexity. Now a ToolChain turns Actions into Jobs, and every helper tool is searched for relative to Swift first. Much simpler. Swift SVN r31563
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
//===--- ToolChain.cpp - Collections of tools for one platform ------------===//
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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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/// \file This file defines the base implementation of the ToolChain class.
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/// The platform-specific subclasses are implemented in ToolChains.cpp.
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/// For organizational purposes, the platform-independent logic for
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/// constructing job invocations is also located in ToolChains.cpp.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Driver/ToolChain.h"
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#include "swift/Driver/Driver.h"
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#include "swift/Driver/Job.h"
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#include "llvm/Option/ArgList.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Program.h"
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#include "llvm/ADT/STLExtras.h"
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using namespace swift;
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using namespace swift::driver;
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using namespace llvm::opt;
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const char * const ToolChain::SWIFT_EXECUTABLE_NAME;
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std::unique_ptr<Job>
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ToolChain::constructJob(const JobAction &JA,
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SmallVectorImpl<const Job *> &&inputs,
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std::unique_ptr<CommandOutput> output,
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const ActionList &inputActions,
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const llvm::opt::ArgList &args,
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const OutputInfo &OI) const {
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JobContext context{inputs, *output, inputActions, args, OI};
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const char *executableName;
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llvm::opt::ArgStringList arguments;
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switch (JA.getKind()) {
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#define CASE(K) case Action::K: \
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std::tie(executableName, arguments) = \
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constructInvocation(cast<K##Action>(JA), context); \
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break;
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CASE(CompileJob)
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CASE(BackendJob)
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CASE(MergeModuleJob)
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CASE(LinkJob)
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CASE(GenerateDSYMJob)
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CASE(AutolinkExtractJob)
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CASE(REPLJob)
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#undef CASE
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case Action::Input:
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llvm_unreachable("not a JobAction");
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}
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// Special-case the Swift frontend.
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const char *executablePath = nullptr;
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if (StringRef(SWIFT_EXECUTABLE_NAME) == executableName) {
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executablePath = getDriver().getSwiftProgramPath().c_str();
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} else {
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std::string relativePath = findProgramRelativeToSwift(executableName);
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if (!relativePath.empty()) {
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executablePath = args.MakeArgString(relativePath);
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} else {
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auto systemPath = llvm::sys::findProgramByName(executableName);
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if (systemPath) {
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executablePath = args.MakeArgString(systemPath.get());
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} else {
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// For debugging purposes.
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executablePath = executableName;
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}
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}
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}
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return llvm::make_unique<Job>(JA, std::move(inputs), std::move(output),
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executablePath, std::move(arguments));
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}
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std::string
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ToolChain::findProgramRelativeToSwift(StringRef executableName) const {
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auto insertionResult =
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ProgramLookupCache.insert(std::make_pair(executableName, ""));
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if (insertionResult.second) {
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std::string path = findProgramRelativeToSwiftImpl(executableName);
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insertionResult.first->setValue(std::move(path));
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}
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return insertionResult.first->getValue();
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}
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std::string
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ToolChain::findProgramRelativeToSwiftImpl(StringRef executableName) const {
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llvm::SmallString<128> path{getDriver().getSwiftProgramPath()};
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llvm::sys::path::remove_filename(path);
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auto result = llvm::sys::findProgramByName(executableName, {path});
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if (result)
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return result.get();
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return {};
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}
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types::ID ToolChain::lookupTypeForExtension(StringRef Ext) const {
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return types::lookupTypeForExtension(Ext);
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}
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