mirror of
https://github.com/apple/swift.git
synced 2025-12-14 20:36:38 +01:00
65668c9d82
- Add CompilerInvocation::getPCHHash
This will be used when creating a unique filename for a persistent
precompiled bridging header.
- Automatically generate and use a precompiled briding header
When we're given both -import-objc-header and -pch-output-dir
arguments, we will try to:
- Validate what we think the PCH filename should be for the bridging
header, based on the Swift PCH hash and the clang module hash.
- If we're successful, we'll just use it.
- If it's out of date or something else is wrong, we'll try to
emit it.
- This gives us a single filename which we can `stat` to check for the
validity of our code completion cache, which is keyed off of module
name, module filename, and module file age.
- Cache code completion results from imported modules
If we just have a single .PCH file imported, we can use that file as
part of the key used to cache declarations in a module. Because
multiple files can contribute to the __ObjC module, we've always given
it the phony filename "<imports>", which never exists, so `stat`-ing it
always fails and we never cache declarations in it.
This is extremely problematic for projects with huge bridging headers.
In the case where we have a single PCH import, this can bring warm code
completion times down to about 500ms from over 2-3s, so it can provide a
nice performance win for IDEs.
- Add a new test that performs two code-completion requests with a bridging header.
- Add some -pch-output-dir flags to existing SourceKit tests that import a bridging
header.
rdar://problem/31198982
97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
//===--- SearchPathOptions.h ------------------------------------*- C++ -*-===//
|
|
//
|
|
// This source file is part of the Swift.org open source project
|
|
//
|
|
// Copyright (c) 2014 - 2017 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef SWIFT_AST_SEARCHPATHOPTIONS_H
|
|
#define SWIFT_AST_SEARCHPATHOPTIONS_H
|
|
|
|
#include "llvm/ADT/Hashing.h"
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace swift {
|
|
|
|
/// Options for controlling search path behavior.
|
|
class SearchPathOptions {
|
|
public:
|
|
/// Path to the SDK which is being built against.
|
|
std::string SDKPath;
|
|
|
|
/// Path(s) which should be searched for modules.
|
|
///
|
|
/// Do not add values to this directly. Instead, use
|
|
/// \c ASTContext::addSearchPath.
|
|
std::vector<std::string> ImportSearchPaths;
|
|
|
|
struct FrameworkSearchPath {
|
|
std::string Path;
|
|
bool IsSystem = false;
|
|
FrameworkSearchPath(StringRef path, bool isSystem)
|
|
: Path(path), IsSystem(isSystem) {}
|
|
|
|
friend bool operator ==(const FrameworkSearchPath &LHS,
|
|
const FrameworkSearchPath &RHS) {
|
|
return LHS.Path == RHS.Path && LHS.IsSystem == RHS.IsSystem;
|
|
}
|
|
friend bool operator !=(const FrameworkSearchPath &LHS,
|
|
const FrameworkSearchPath &RHS) {
|
|
return !(LHS == RHS);
|
|
}
|
|
};
|
|
/// Path(s) which should be searched for frameworks.
|
|
///
|
|
/// Do not add values to this directly. Instead, use
|
|
/// \c ASTContext::addSearchPath.
|
|
std::vector<FrameworkSearchPath> FrameworkSearchPaths;
|
|
|
|
/// Path(s) which should be searched for libraries.
|
|
///
|
|
/// This is used in immediate modes. It is safe to add paths to this directly.
|
|
std::vector<std::string> LibrarySearchPaths;
|
|
|
|
/// Path to search for compiler-relative header files.
|
|
std::string RuntimeResourcePath;
|
|
|
|
/// Path to search for compiler-relative stdlib dylibs.
|
|
std::string RuntimeLibraryPath;
|
|
|
|
/// Path to search for compiler-relative stdlib modules.
|
|
std::string RuntimeLibraryImportPath;
|
|
|
|
/// Don't look in for compiler-provided modules.
|
|
bool SkipRuntimeLibraryImportPath = false;
|
|
|
|
/// Return a hash code of any components from these options that should
|
|
/// contribute to a Swift Bridging PCH hash.
|
|
llvm::hash_code getPCHHashComponents() const {
|
|
using llvm::hash_value;
|
|
using llvm::hash_combine;
|
|
auto Code = hash_value(SDKPath);
|
|
for (auto Import : ImportSearchPaths) {
|
|
Code = hash_combine(Code, Import);
|
|
}
|
|
for (const auto &FrameworkPath : FrameworkSearchPaths) {
|
|
Code = hash_combine(Code, FrameworkPath.Path);
|
|
}
|
|
for (auto LibraryPath : LibrarySearchPaths) {
|
|
Code = hash_combine(Code, LibraryPath);
|
|
}
|
|
Code = hash_combine(Code, RuntimeResourcePath);
|
|
Code = hash_combine(Code, RuntimeLibraryImportPath);
|
|
return Code;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|