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//===--- ASTSignals.cpp ------------------------------------------*- C++-*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "ASTSignals.h"
#include "AST.h"
#include "FindTarget.h"
#include "Headers.h"
#include "support/Trace.h"
#include "clang/AST/DeclObjC.h"
namespace clang {
namespace clangd {
ASTSignals ASTSignals::derive(const ParsedAST &AST) {
trace::Span Span("ASTSignals::derive");
ASTSignals Signals;
Signals.InsertionDirective = preferredIncludeDirective(
AST.tuPath(), AST.getLangOpts(),
AST.getIncludeStructure().MainFileIncludes, AST.getLocalTopLevelDecls());
const SourceManager &SM = AST.getSourceManager();
findExplicitReferences(
AST.getASTContext(),
[&](ReferenceLoc Ref) {
for (const NamedDecl *ND : Ref.Targets) {
if (!isInsideMainFile(Ref.NameLoc, SM))
continue;
SymbolID ID = getSymbolID(ND);
if (!ID)
continue;
unsigned &SymbolCount = Signals.ReferencedSymbols[ID];
SymbolCount++;
// Process namespace only when we see the symbol for the first time.
if (SymbolCount != 1)
continue;
if (const auto *NSD = dyn_cast<NamespaceDecl>(ND->getDeclContext())) {
if (NSD->isAnonymousNamespace())
continue;
std::string NS = printNamespaceScope(*NSD);
if (!NS.empty())
Signals.RelatedNamespaces[NS]++;
}
}
},
AST.getHeuristicResolver());
return Signals;
}
} // namespace clangd
} // namespace clang
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