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//===--- BlockList.cpp - BlockList utilities ------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 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 "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/YAMLParser.h"
#include "llvm/Support/YAMLTraits.h"
#include "swift/Basic/BlockList.h"
#include "swift/Basic/SourceManager.h"
struct swift::BlockListStore::Implementation {
SourceManager SM;
llvm::StringMap<std::vector<BlockListAction>> ModuleActionDict;
llvm::StringMap<std::vector<BlockListAction>> ProjectActionDict;
void addConfigureFilePath(StringRef path);
bool hasBlockListAction(StringRef key, BlockListKeyKind keyKind,
BlockListAction action);
void collectBlockList(llvm::yaml::Node *N, BlockListAction action);
llvm::StringMap<std::vector<BlockListAction>> *getDictToUse(BlockListKeyKind kind) {
switch (kind) {
case BlockListKeyKind::ModuleName:
return &ModuleActionDict;
case BlockListKeyKind::ProjectName:
return &ProjectActionDict;
case BlockListKeyKind::Undefined:
return nullptr;
}
}
static std::string getScalaString(llvm::yaml::Node *N) {
llvm::SmallString<64> Buffer;
if (auto *scala = dyn_cast<llvm::yaml::ScalarNode>(N)) {
return scala->getValue(Buffer).str();
}
return std::string();
}
};
swift::BlockListStore::BlockListStore(): Impl(*new Implementation()) {}
swift::BlockListStore::~BlockListStore() { delete &Impl; }
bool swift::BlockListStore::hasBlockListAction(StringRef key,
BlockListKeyKind keyKind, BlockListAction action) {
return Impl.hasBlockListAction(key, keyKind, action);
}
void swift::BlockListStore::addConfigureFilePath(StringRef path) {
Impl.addConfigureFilePath(path);
}
bool swift::BlockListStore::Implementation::hasBlockListAction(StringRef key,
BlockListKeyKind keyKind, BlockListAction action) {
auto *dict = getDictToUse(keyKind);
assert(dict);
auto it = dict->find(key);
if (it == dict->end())
return false;
return llvm::is_contained(it->second, action);
}
void swift::BlockListStore::Implementation::collectBlockList(llvm::yaml::Node *N,
BlockListAction action) {
namespace yaml = llvm::yaml;
auto *pair = dyn_cast<yaml::KeyValueNode>(N);
if (!pair)
return;
std::string rawKey = getScalaString(pair->getKey());
auto keyKind = llvm::StringSwitch<BlockListKeyKind>(rawKey)
#define CASE(X) .Case(#X, BlockListKeyKind::X)
CASE(ModuleName)
CASE(ProjectName)
#undef CASE
.Default(BlockListKeyKind::Undefined);
if (keyKind == BlockListKeyKind::Undefined)
return;
auto *dictToUse = getDictToUse(keyKind);
assert(dictToUse);
auto *seq = dyn_cast<yaml::SequenceNode>(pair->getValue());
if (!seq)
return;
for (auto &node: *seq) {
std::string name = getScalaString(&node);
dictToUse->insert({name, std::vector<BlockListAction>()})
.first->second.push_back(action);
}
}
void swift::BlockListStore::Implementation::addConfigureFilePath(StringRef path) {
namespace yaml = llvm::yaml;
// Load the input file.
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> FileBufOrErr =
vfs::getFileOrSTDIN(*SM.getFileSystem(), path,
/*FileSize*/-1, /*RequiresNullTerminator*/true,
/*IsVolatile*/false, /*RetryCount*/30);
if (!FileBufOrErr) {
return;
}
StringRef Buffer = FileBufOrErr->get()->getBuffer();
yaml::Stream Stream(llvm::MemoryBufferRef(Buffer, path),
SM.getLLVMSourceMgr());
for (auto DI = Stream.begin(); DI != Stream.end(); ++ DI) {
assert(DI != Stream.end() && "Failed to read a document");
yaml::Node *N = DI->getRoot();
for (auto &pair: *dyn_cast<yaml::MappingNode>(N)) {
std::string key = getScalaString(pair.getKey());
auto action = llvm::StringSwitch<BlockListAction>(key)
#define BLOCKLIST_ACTION(X) .Case(#X, BlockListAction::X)
#include "swift/Basic/BlockListAction.def"
.Default(BlockListAction::Undefined);
if (action == BlockListAction::Undefined)
continue;
auto *map = dyn_cast<yaml::MappingNode>(pair.getValue());
if (!map)
continue;
for (auto &innerPair: *map) {
collectBlockList(&innerPair, action);
}
}
}
}
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