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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
122 lines
4.7 KiB
C++
122 lines
4.7 KiB
C++
//===--- PPConditionalDirectiveRecord.h - Preprocessing Directives-*- C++ -*-=//
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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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//
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// This file implements the PPConditionalDirectiveRecord class, which maintains
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// a record of conditional directive regions.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Lex/PPConditionalDirectiveRecord.h"
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#include "llvm/Support/Capacity.h"
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using namespace clang;
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PPConditionalDirectiveRecord::PPConditionalDirectiveRecord(SourceManager &SM)
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: SourceMgr(SM) {
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CondDirectiveStack.push_back(SourceLocation());
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}
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bool PPConditionalDirectiveRecord::rangeIntersectsConditionalDirective(
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SourceRange Range) const {
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if (Range.isInvalid())
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return false;
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CondDirectiveLocsTy::const_iterator
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low = std::lower_bound(CondDirectiveLocs.begin(), CondDirectiveLocs.end(),
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Range.getBegin(), CondDirectiveLoc::Comp(SourceMgr));
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if (low == CondDirectiveLocs.end())
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return false;
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if (SourceMgr.isBeforeInTranslationUnit(Range.getEnd(), low->getLoc()))
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return false;
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CondDirectiveLocsTy::const_iterator
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upp = std::upper_bound(low, CondDirectiveLocs.end(),
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Range.getEnd(), CondDirectiveLoc::Comp(SourceMgr));
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SourceLocation uppRegion;
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if (upp != CondDirectiveLocs.end())
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uppRegion = upp->getRegionLoc();
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return low->getRegionLoc() != uppRegion;
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}
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SourceLocation PPConditionalDirectiveRecord::findConditionalDirectiveRegionLoc(
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SourceLocation Loc) const {
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if (Loc.isInvalid())
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return SourceLocation();
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if (CondDirectiveLocs.empty())
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return SourceLocation();
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if (SourceMgr.isBeforeInTranslationUnit(CondDirectiveLocs.back().getLoc(),
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Loc))
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return CondDirectiveStack.back();
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CondDirectiveLocsTy::const_iterator
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low = std::lower_bound(CondDirectiveLocs.begin(), CondDirectiveLocs.end(),
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Loc, CondDirectiveLoc::Comp(SourceMgr));
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assert(low != CondDirectiveLocs.end());
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return low->getRegionLoc();
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}
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void PPConditionalDirectiveRecord::addCondDirectiveLoc(
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CondDirectiveLoc DirLoc) {
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// Ignore directives in system headers.
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if (SourceMgr.isInSystemHeader(DirLoc.getLoc()))
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return;
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assert(CondDirectiveLocs.empty() ||
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SourceMgr.isBeforeInTranslationUnit(CondDirectiveLocs.back().getLoc(),
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DirLoc.getLoc()));
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CondDirectiveLocs.push_back(DirLoc);
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}
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void PPConditionalDirectiveRecord::If(SourceLocation Loc,
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SourceRange ConditionRange,
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ConditionValueKind ConditionValue) {
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addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
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CondDirectiveStack.push_back(Loc);
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}
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void PPConditionalDirectiveRecord::Ifdef(SourceLocation Loc,
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const Token &MacroNameTok,
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const MacroDefinition &MD) {
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addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
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CondDirectiveStack.push_back(Loc);
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}
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void PPConditionalDirectiveRecord::Ifndef(SourceLocation Loc,
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const Token &MacroNameTok,
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const MacroDefinition &MD) {
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addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
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CondDirectiveStack.push_back(Loc);
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}
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void PPConditionalDirectiveRecord::Elif(SourceLocation Loc,
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SourceRange ConditionRange,
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ConditionValueKind ConditionValue,
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SourceLocation IfLoc) {
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addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
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CondDirectiveStack.back() = Loc;
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}
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void PPConditionalDirectiveRecord::Else(SourceLocation Loc,
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SourceLocation IfLoc) {
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addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
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CondDirectiveStack.back() = Loc;
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}
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void PPConditionalDirectiveRecord::Endif(SourceLocation Loc,
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SourceLocation IfLoc) {
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addCondDirectiveLoc(CondDirectiveLoc(Loc, CondDirectiveStack.back()));
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assert(!CondDirectiveStack.empty());
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CondDirectiveStack.pop_back();
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}
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size_t PPConditionalDirectiveRecord::getTotalMemory() const {
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return llvm::capacity_in_bytes(CondDirectiveLocs);
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}
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