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//===--- SwiftCompile.cpp -------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2021 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
#include "SwiftEditorDiagConsumer.h"
#include "SwiftLangSupport.h"
#include "SourceKit/Support/FileSystemProvider.h"
#include "swift/IDETool/CompileInstance.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/MemoryBuffer.h"
using namespace SourceKit;
using namespace swift;
std::shared_ptr<compile::Session>
compile::SessionManager::getSession(StringRef name) {
llvm::sys::ScopedLock lock(mtx);
auto i = sessions.find(name);
if (i != sessions.end()) {
return i->second;
}
bool inserted = false;
std::tie(i, inserted) =
sessions.try_emplace(name, std::make_shared<compile::Session>(
SwiftExecutablePath, RuntimeResourcePath,
DiagnosticDocumentationPath, Plugins));
assert(inserted);
return i->second;
}
void compile::SessionManager::clearSession(StringRef name) {
llvm::sys::ScopedLock lock(mtx);
sessions.erase(name);
}
namespace {
class InvocationRequest final
: public llvm::TrailingObjects<InvocationRequest, char *, char> {
friend class llvm::TrailingObjects<InvocationRequest, char *, char>;
size_t numArgs;
size_t numTrailingObjects(OverloadToken<char *>) const { return numArgs; }
MutableArrayRef<char *> getMutableArgs() {
return {getTrailingObjects<char *>(), numArgs};
}
InvocationRequest(ArrayRef<const char *> Args) : numArgs(Args.size()) {
// Copy the arguments to the buffer.
char *ptr = getTrailingObjects<char>();
auto thisArgs = getMutableArgs();
size_t i = 0;
for (const char *arg : Args) {
thisArgs[i++] = ptr;
auto size = strlen(arg) + 1;
strncpy(ptr, arg, size);
ptr += size;
}
}
public:
static InvocationRequest *create(ArrayRef<const char *> Args) {
size_t charBufSize = 0;
for (auto arg : Args) {
charBufSize += strlen(arg) + 1;
}
auto size = InvocationRequest::totalSizeToAlloc<char *, char>(Args.size(),
charBufSize);
auto *data = malloc(size);
return new (data) InvocationRequest(Args);
}
ArrayRef<const char *> getArgs() const {
return {getTrailingObjects<char *>(), numArgs};
}
};
} // namespace
void compile::SessionManager::performCompileAsync(
StringRef Name, ArrayRef<const char *> Args,
llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem> fileSystem,
std::shared_ptr<std::atomic<bool>> CancellationFlag,
std::function<void(const RequestResult<CompilationResult> &)> Receiver) {
auto session = getSession(Name);
auto *request = InvocationRequest::create(Args);
compileQueue.dispatch(
[session, request, fileSystem, Receiver, CancellationFlag]() {
SWIFT_DEFER {
delete request;
};
// Cancelled during async dispatching?
if (CancellationFlag->load(std::memory_order_relaxed)) {
Receiver(RequestResult<CompilationResult>::cancelled());
return;
}
EditorDiagConsumer diagC;
auto stat =
session->performCompile(request->getArgs(), fileSystem, &diagC,
CancellationFlag);
// Cancelled during the compilation?
if (CancellationFlag->load(std::memory_order_relaxed)) {
Receiver(RequestResult<CompilationResult>::cancelled());
return;
}
SmallVector<DiagnosticEntryInfo, 0> diagEntryInfos;
diagC.getAllDiagnostics(diagEntryInfos);
Receiver(RequestResult<CompilationResult>::fromResult(
{stat, diagEntryInfos}));
},
/*isStackDeep=*/true);
}
void SwiftLangSupport::performCompile(
StringRef Name, ArrayRef<const char *> Args,
std::optional<VFSOptions> vfsOptions,
SourceKitCancellationToken CancellationToken,
std::function<void(const RequestResult<CompilationResult> &)> Receiver) {
std::string error;
auto fileSystem =
getFileSystem(vfsOptions, /*primaryFile=*/std::nullopt, error);
if (!fileSystem) {
Receiver(RequestResult<CompilationResult>::fromError(error));
return;
}
std::shared_ptr<std::atomic<bool>> CancellationFlag = std::make_shared<std::atomic<bool>>(false);
ReqTracker->setCancellationHandler(CancellationToken, [CancellationFlag]() {
CancellationFlag->store(true, std::memory_order_relaxed);
});
CompileManager->performCompileAsync(Name, Args, std::move(fileSystem),
CancellationFlag, Receiver);
}
void SwiftLangSupport::closeCompile(StringRef Name) {
CompileManager->clearSession(Name);
}
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