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7b4218c2f7
Aligning with what we did for SwiftSyntax, this patch uses caches for absolute position calculation on the C++ side.
88 lines
2.4 KiB
C++
88 lines
2.4 KiB
C++
//===--- SyntaxData.cpp - Swift Syntax Data Implementation ----------------===//
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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 - 2017 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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#include "swift/Syntax/SyntaxData.h"
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using namespace swift;
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using namespace swift::syntax;
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RC<SyntaxData> SyntaxData::make(RC<RawSyntax> Raw,
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const SyntaxData *Parent,
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CursorIndex IndexInParent) {
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auto size = totalSizeToAlloc<AtomicCache<SyntaxData>>(Raw->getNumChildren());
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void *data = ::operator new(size);
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return RC<SyntaxData>{new (data) SyntaxData(Raw, Parent, IndexInParent)};
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}
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bool SyntaxData::isType() const {
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return Raw->isType();
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}
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bool SyntaxData::isStmt() const {
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return Raw->isStmt();
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}
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bool SyntaxData::isDecl() const {
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return Raw->isDecl();
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}
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bool SyntaxData::isExpr() const {
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return Raw->isExpr();
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}
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bool SyntaxData::isPattern() const {
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return Raw->isPattern();
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}
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bool SyntaxData::isUnknown() const {
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return Raw->isUnknown();
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}
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void SyntaxData::dump(llvm::raw_ostream &OS) const {
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Raw->dump(OS, 0);
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}
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RC<SyntaxData> SyntaxData::getPreviousNode() const {
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if (size_t N = getIndexInParent()) {
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if (hasParent()) {
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for (size_t I = N - 1; ; I--) {
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if (auto C = getParent()->getChild(I)) {
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return C;
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}
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if (I == 0)
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break;
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}
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}
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}
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return hasParent() ? Parent->getPreviousNode() : nullptr;
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}
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AbsolutePosition SyntaxData::getAbsolutePositionWithLeadingTrivia() const {
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if (PositionCache.hasValue())
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return *PositionCache;
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if (auto P = getPreviousNode()) {
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auto Result = P->getAbsolutePositionWithLeadingTrivia();
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P->getRaw()->accumulateAbsolutePosition(Result);
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// FIXME: avoid using const_cast.
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const_cast<SyntaxData*>(this)->PositionCache = Result;
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} else {
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const_cast<SyntaxData*>(this)->PositionCache = AbsolutePosition();
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}
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return *PositionCache;
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}
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AbsolutePosition SyntaxData::getAbsolutePosition() const {
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auto Result = getAbsolutePositionWithLeadingTrivia();
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getRaw()->accumulateLeadingTrivia(Result);
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return Result;
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}
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