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//===--- TestTU.cpp - Scratch source files for testing --------------------===//
//
// 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 "TestTU.h"
#include "TestFS.h"
#include "index/FileIndex.h"
#include "index/MemIndex.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/Utils.h"
namespace clang {
namespace clangd {
ParsedAST TestTU::build() const {
std::string FullFilename = testPath(Filename),
FullHeaderName = testPath(HeaderFilename),
ImportThunk = testPath("import_thunk.h");
// We want to implicitly include HeaderFilename without messing up offsets.
// -include achieves this, but sometimes we want #import (to simulate a header
// guard without messing up offsets). In this case, use an intermediate file.
std::string ThunkContents = "#import \"" + FullHeaderName + "\"\n";
llvm::StringMap<std::string> Files(AdditionalFiles);
Files[FullFilename] = Code;
Files[FullHeaderName] = HeaderCode;
Files[ImportThunk] = ThunkContents;
std::vector<const char *> Cmd = {"clang"};
// FIXME: this shouldn't need to be conditional, but it breaks a
// GoToDefinition test for some reason (getMacroArgExpandedLocation fails).
if (!HeaderCode.empty()) {
Cmd.push_back("-include");
Cmd.push_back(ImplicitHeaderGuard ? ImportThunk.c_str()
: FullHeaderName.c_str());
// ms-compatibility changes the meaning of #import.
// The default is OS-dependent (on on windows), ensure it's off.
if (ImplicitHeaderGuard)
Cmd.push_back("-fno-ms-compatibility");
}
Cmd.insert(Cmd.end(), ExtraArgs.begin(), ExtraArgs.end());
// Put the file name at the end -- this allows the extra arg (-xc++) to
// override the language setting.
Cmd.push_back(FullFilename.c_str());
ParseInputs Inputs;
Inputs.CompileCommand.Filename = FullFilename;
Inputs.CompileCommand.CommandLine = {Cmd.begin(), Cmd.end()};
Inputs.CompileCommand.Directory = testRoot();
Inputs.Contents = Code;
Inputs.FS = buildTestFS(Files);
Inputs.Opts = ParseOptions();
Inputs.Opts.ClangTidyOpts.Checks = ClangTidyChecks;
Inputs.Opts.ClangTidyOpts.WarningsAsErrors = ClangTidyWarningsAsErrors;
Inputs.Index = ExternalIndex;
if (Inputs.Index)
Inputs.Opts.SuggestMissingIncludes = true;
auto CI = buildCompilerInvocation(Inputs);
assert(CI && "Failed to build compilation invocation.");
auto Preamble =
buildPreamble(FullFilename, *CI,
/*OldPreamble=*/nullptr,
/*OldCompileCommand=*/Inputs.CompileCommand, Inputs,
/*StoreInMemory=*/true, /*PreambleCallback=*/nullptr);
auto AST = buildAST(FullFilename, std::move(CI), Inputs, Preamble);
if (!AST.hasValue()) {
ADD_FAILURE() << "Failed to build code:\n" << Code;
llvm_unreachable("Failed to build TestTU!");
}
return std::move(*AST);
}
SymbolSlab TestTU::headerSymbols() const {
auto AST = build();
return std::get<0>(indexHeaderSymbols(AST.getASTContext(),
AST.getPreprocessorPtr(),
AST.getCanonicalIncludes()));
}
std::unique_ptr<SymbolIndex> TestTU::index() const {
auto AST = build();
auto Idx = llvm::make_unique<FileIndex>(/*UseDex=*/true);
Idx->updatePreamble(Filename, AST.getASTContext(), AST.getPreprocessorPtr(),
AST.getCanonicalIncludes());
Idx->updateMain(Filename, AST);
return std::move(Idx);
}
const Symbol &findSymbol(const SymbolSlab &Slab, llvm::StringRef QName) {
const Symbol *Result = nullptr;
for (const Symbol &S : Slab) {
if (QName != (S.Scope + S.Name).str())
continue;
if (Result) {
ADD_FAILURE() << "Multiple symbols named " << QName << ":\n"
<< *Result << "\n---\n"
<< S;
assert(false && "QName is not unique");
}
Result = &S;
}
if (!Result) {
ADD_FAILURE() << "No symbol named " << QName << " in "
<< ::testing::PrintToString(Slab);
assert(false && "No symbol with QName");
}
return *Result;
}
const NamedDecl &findDecl(ParsedAST &AST, llvm::StringRef QName) {
llvm::SmallVector<llvm::StringRef, 4> Components;
QName.split(Components, "::");
auto &Ctx = AST.getASTContext();
auto LookupDecl = [&Ctx](const DeclContext &Scope,
llvm::StringRef Name) -> const NamedDecl & {
auto LookupRes = Scope.lookup(DeclarationName(&Ctx.Idents.get(Name)));
assert(!LookupRes.empty() && "Lookup failed");
assert(LookupRes.size() == 1 && "Lookup returned multiple results");
return *LookupRes.front();
};
const DeclContext *Scope = Ctx.getTranslationUnitDecl();
for (auto NameIt = Components.begin(), End = Components.end() - 1;
NameIt != End; ++NameIt) {
Scope = &cast<DeclContext>(LookupDecl(*Scope, *NameIt));
}
return LookupDecl(*Scope, Components.back());
}
const NamedDecl &findDecl(ParsedAST &AST,
std::function<bool(const NamedDecl &)> Filter) {
struct Visitor : RecursiveASTVisitor<Visitor> {
decltype(Filter) F;
llvm::SmallVector<const NamedDecl *, 1> Decls;
bool VisitNamedDecl(const NamedDecl *ND) {
if (F(*ND))
Decls.push_back(ND);
return true;
}
} Visitor;
Visitor.F = Filter;
Visitor.TraverseDecl(AST.getASTContext().getTranslationUnitDecl());
if (Visitor.Decls.size() != 1) {
ADD_FAILURE() << Visitor.Decls.size() << " symbols matched.";
assert(Visitor.Decls.size() == 1);
}
return *Visitor.Decls.front();
}
const NamedDecl &findUnqualifiedDecl(ParsedAST &AST, llvm::StringRef Name) {
return findDecl(AST, [Name](const NamedDecl &ND) {
if (auto *ID = ND.getIdentifier())
if (ID->getName() == Name)
return true;
return false;
});
}
} // namespace clangd
} // namespace clang
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