a0e30914f8
The class `SymbolOccurrences` can store either a single `SourceRange` in-place or multiple `SourceRanges` on the heap. In the latter case the number of source ranges is stored in the internal representation of the beginning `SourceLocation` of the in-place `SourceRange` object. This change gets rid of such hack by placing `SourceRange` in a union which holds either a valid `SourceRange` or an `unsigned int` (a number of ranges). The change also adds `static_assert`s that check that `SourceRange` and `SourceLocation` are trivially destructible (this is required for the current patch and for D94237 which has already been committed). Reviewed By: MarkMurrayARM, simon_tatham Differential Revision: https://reviews.llvm.org/D94599
36 lines
1.4 KiB
C++
36 lines
1.4 KiB
C++
//===--- SymbolOccurrences.cpp - Clang refactoring library ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Tooling/Refactoring/Rename/SymbolOccurrences.h"
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#include "clang/Tooling/Refactoring/Rename/SymbolName.h"
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#include "llvm/ADT/STLExtras.h"
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using namespace clang;
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using namespace tooling;
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SymbolOccurrence::SymbolOccurrence(const SymbolName &Name, OccurrenceKind Kind,
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ArrayRef<SourceLocation> Locations)
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: Kind(Kind) {
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ArrayRef<std::string> NamePieces = Name.getNamePieces();
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assert(Locations.size() == NamePieces.size() &&
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"mismatching number of locations and lengths");
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assert(!Locations.empty() && "no locations");
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if (Locations.size() == 1) {
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new (&SingleRange) SourceRange(
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Locations[0], Locations[0].getLocWithOffset(NamePieces[0].size()));
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return;
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}
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MultipleRanges = std::make_unique<SourceRange[]>(Locations.size());
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NumRanges = Locations.size();
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for (const auto &Loc : llvm::enumerate(Locations)) {
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MultipleRanges[Loc.index()] = SourceRange(
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Loc.value(),
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Loc.value().getLocWithOffset(NamePieces[Loc.index()].size()));
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}
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}
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