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f3ff561c6f
This is phase-1 of switching from llvm::Optional to std::optional in the
next rebranch. llvm::Optional was removed from upstream LLVM, so we need
to migrate off rather soon. On Darwin, std::optional, and llvm::Optional
have the same layout, so we don't need to be as concerned about ABI
beyond the name mangling. `llvm::Optional` is only returned from one
function in
```
getStandardTypeSubst(StringRef TypeName,
bool allowConcurrencyManglings);
```
It's the return value, so it should not impact the mangling of the
function, and the layout is the same as `std::optional`, so it should be
mostly okay. This function doesn't appear to have users, and the ABI was
already broken 2 years ago for concurrency and no one seemed to notice
so this should be "okay".
I'm doing the migration incrementally so that folks working on main can
cherry-pick back to the release/5.9 branch. Once 5.9 is done and locked
away, then we can go through and finish the replacement. Since `None`
and `Optional` show up in contexts where they are not `llvm::None` and
`llvm::Optional`, I'm preparing the work now by going through and
removing the namespace unwrapping and making the `llvm` namespace
explicit. This should make it fairly mechanical to go through and
replace llvm::Optional with std::optional, and llvm::None with
std::nullopt. It's also a change that can be brought onto the
release/5.9 with minimal impact. This should be an NFC change.
97 lines
3.5 KiB
C++
97 lines
3.5 KiB
C++
//===------ArgsToFrontendOptionsConverter.h-- --------------------*-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 - 2018 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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#ifndef SWIFT_FRONTEND_ARGSTOFRONTENDOPTIONSCONVERTER_H
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#define SWIFT_FRONTEND_ARGSTOFRONTENDOPTIONSCONVERTER_H
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#include "swift/AST/DiagnosticConsumer.h"
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#include "swift/AST/DiagnosticEngine.h"
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#include "swift/Frontend/FrontendOptions.h"
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#include "swift/Option/Options.h"
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#include "llvm/Option/ArgList.h"
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#include <vector>
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namespace swift {
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class ArgsToFrontendOptionsConverter {
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private:
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DiagnosticEngine &Diags;
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const llvm::opt::ArgList &Args;
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FrontendOptions &Opts;
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llvm::Optional<std::vector<std::string>>
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cachedOutputFilenamesFromCommandLineOrFilelist;
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void handleDebugCrashGroupArguments();
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void computeDebugTimeOptions();
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bool computeFallbackModuleName();
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bool computeModuleName();
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bool computeModuleAliases();
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bool computeMainAndSupplementaryOutputFilenames();
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void computeDumpScopeMapLocations();
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void computeHelpOptions();
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void computeImplicitImportModuleNames(llvm::opt::OptSpecifier id,
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bool isTestable);
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void computeImportObjCHeaderOptions();
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void computeLLVMArgs();
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void computePlaygroundOptions();
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void computePrintStatsOptions();
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void computeTBDOptions();
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bool setUpImmediateArgs();
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bool checkUnusedSupplementaryOutputPaths() const;
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bool checkForUnusedOutputPaths() const;
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bool checkBuildFromInterfaceOnlyOptions() const;
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public:
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ArgsToFrontendOptionsConverter(DiagnosticEngine &Diags,
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const llvm::opt::ArgList &Args,
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FrontendOptions &Opts)
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: Diags(Diags), Args(Args), Opts(Opts) {}
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/// Populates the FrontendOptions the converter was initialized with.
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///
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/// \param buffers If present, buffers read in the processing of the frontend
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/// options will be saved here. These should only be used for debugging
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/// purposes.
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bool convert(
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SmallVectorImpl<std::unique_ptr<llvm::MemoryBuffer>> *buffers);
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static FrontendOptions::ActionType
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determineRequestedAction(const llvm::opt::ArgList &);
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};
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class ModuleAliasesConverter {
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public:
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/// Sets the \c ModuleAliasMap in the \c FrontendOptions with args passed via `-module-alias`.
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///
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/// \param args The arguments to `-module-alias`. If input has `-module-alias Foo=Bar
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/// -module-alias Baz=Qux`, the args are ['Foo=Bar', 'Baz=Qux']. The name
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/// Foo is the name that appears in source files, while it maps to Bar, the name
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/// of the binary on disk, /path/to/Bar.swiftmodule(interface), under the hood.
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/// \param options FrontendOptions containing the module alias map to set args to.
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/// \param diags Used to print diagnostics in case validation of the args fails.
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/// \return Whether the validation passed and successfully set the module alias map
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static bool computeModuleAliases(std::vector<std::string> args,
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FrontendOptions &options,
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DiagnosticEngine &diags);
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};
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} // namespace swift
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#endif /* SWIFT_FRONTEND_ARGSTOFRONTENDOPTIONSCONVERTER_H */
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