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50a73a3965
c763ab5d1e fixed an issue in
`getSerializedLocs` where it never actually cached its result (and thus
always allocated a new `CachedExternalSourceLocs`). Unfortunately it
missed a leak that could occur when `DocRanges` grows beyond its initial
size of 4.
Allocate `DocRanges` upfront in the `ASTContext` as well in order to
prevent this leak.
Resolves rdar://85472403.
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
//===--- BasicSourceInfo.h - Simple source information ----------*- 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 - 2020 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_BASIC_BASIC_SOURCE_INFO_H
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#define SWIFT_BASIC_BASIC_SOURCE_INFO_H
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#include "swift/Basic/Fingerprint.h"
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#include "swift/Basic/LLVM.h"
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#include "swift/Basic/SourceLoc.h"
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#include "llvm/ADT/PointerIntPair.h"
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#include "llvm/Support/Chrono.h"
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namespace swift {
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class SourceFile;
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struct ExternalSourceLocs {
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struct LocationDirective {
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uint32_t Offset = 0;
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int32_t LineOffset = 0;
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uint32_t Length = 0;
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StringRef Name;
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bool isValid() const { return Length > 0; }
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};
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struct RawLoc {
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uint32_t Offset = 0;
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uint32_t Line = 0;
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uint32_t Column = 0;
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LocationDirective Directive;
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};
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struct RawLocs {
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StringRef SourceFilePath;
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SmallVector<std::pair<RawLoc, uint32_t>, 4> DocRanges;
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RawLoc Loc;
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RawLoc StartLoc;
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RawLoc EndLoc;
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};
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unsigned BufferID = 0;
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SourceLoc Loc;
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ArrayRef<CharSourceRange> DocRanges;
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};
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class BasicSourceFileInfo {
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/// If this is non-null, fields other than 'FilePath' hasn't been populated.
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/// The 'getInt()' part indicates this instance is constructed with a
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/// SourceFile.
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llvm::PointerIntPair<const SourceFile *, 1, bool> SFAndIsFromSF;
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StringRef FilePath;
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Fingerprint InterfaceHashIncludingTypeMembers = Fingerprint::ZERO();
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/// Does *not* include the type-body hashes of the top level types.
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/// Just the `SourceFile` hashes.
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/// Used for incremental imports.
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Fingerprint InterfaceHashExcludingTypeMembers = Fingerprint::ZERO();
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llvm::sys::TimePoint<> LastModified = {};
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uint64_t FileSize = 0;
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// Populate the from 'SF' member if exist. 'SF' will be cleared.
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void populateWithSourceFileIfNeeded();
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public:
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BasicSourceFileInfo(StringRef FilePath,
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Fingerprint InterfaceHashIncludingTypeMembers,
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Fingerprint InterfaceHashExcludingTypeMembers,
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llvm::sys::TimePoint<> LastModified, uint64_t FileSize)
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: FilePath(FilePath),
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InterfaceHashIncludingTypeMembers(InterfaceHashIncludingTypeMembers),
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InterfaceHashExcludingTypeMembers(InterfaceHashExcludingTypeMembers),
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LastModified(LastModified), FileSize(FileSize) {}
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/// Construct with a `SourceFile`. `getInterfaceHashIncludingTypeMembers()`,
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/// `getInterfaceHashExcludingTypeMembers()`, `getLastModified()` and
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/// `getFileSize()` are laizily populated when accessed.
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BasicSourceFileInfo(const SourceFile *SF);
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bool isFromSourceFile() const;
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StringRef getFilePath() const { return FilePath; }
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Fingerprint getInterfaceHashIncludingTypeMembers() const {
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const_cast<BasicSourceFileInfo *>(this)->populateWithSourceFileIfNeeded();
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return InterfaceHashIncludingTypeMembers;
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}
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Fingerprint getInterfaceHashExcludingTypeMembers() const {
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const_cast<BasicSourceFileInfo *>(this)->populateWithSourceFileIfNeeded();
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return InterfaceHashExcludingTypeMembers;
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}
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llvm::sys::TimePoint<> getLastModified() const {
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const_cast<BasicSourceFileInfo *>(this)->populateWithSourceFileIfNeeded();
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return LastModified;
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}
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uint64_t getFileSize() const {
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const_cast<BasicSourceFileInfo *>(this)->populateWithSourceFileIfNeeded();
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return FileSize;
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}
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};
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} // namespace swift
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#endif // SWIFT_BASIC_BASIC_SOURCE_INFO_H
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