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//===- unittests/StaticAnalyzer/Reusables.h -------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_UNITTESTS_STATICANALYZER_REUSABLES_H
#define LLVM_CLANG_UNITTESTS_STATICANALYZER_REUSABLES_H
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/CrossTU/CrossTranslationUnit.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/ExprEngine.h"
#include "gtest/gtest.h"
namespace clang {
namespace ento {
// Find a node in the current AST that matches a matcher.
template <typename T, typename MatcherT>
const T *findNode(const Decl *Where, MatcherT What) {
using namespace ast_matchers;
auto Matches = match(decl(hasDescendant(What.bind("root"))),
*Where, Where->getASTContext());
assert(Matches.size() <= 1 && "Ambiguous match!");
assert(Matches.size() >= 1 && "Match not found!");
const T *Node = selectFirst<T>("root", Matches);
assert(Node && "Type mismatch!");
return Node;
}
// Find a declaration in the current AST by name.
template <typename T>
const T *findDeclByName(const Decl *Where, StringRef Name) {
using namespace ast_matchers;
return findNode<T>(Where, namedDecl(hasName(Name)));
}
// A re-usable consumer that constructs ExprEngine out of CompilerInvocation.
class ExprEngineConsumer : public ASTConsumer {
protected:
CompilerInstance &C;
private:
// We need to construct all of these in order to construct ExprEngine.
CheckerManager ChkMgr;
cross_tu::CrossTranslationUnitContext CTU;
PathDiagnosticConsumers Consumers;
AnalysisManager AMgr;
SetOfConstDecls VisitedCallees;
FunctionSummariesTy FS;
protected:
ExprEngine Eng;
public:
ExprEngineConsumer(CompilerInstance &C)
: C(C),
ChkMgr(C.getASTContext(), C.getAnalyzerOpts(), C.getPreprocessor()),
CTU(C), AMgr(C.getASTContext(), C.getPreprocessor(), {},
CreateRegionStoreManager, CreateRangeConstraintManager,
&ChkMgr, C.getAnalyzerOpts()),
VisitedCallees(), FS(),
Eng(CTU, AMgr, &VisitedCallees, &FS, ExprEngine::Inline_Regular) {}
};
struct ExpectedLocationTy {
unsigned Line;
unsigned Column;
void testEquality(SourceLocation L, SourceManager &SM) const {
EXPECT_EQ(SM.getSpellingLineNumber(L), Line);
EXPECT_EQ(SM.getSpellingColumnNumber(L), Column);
}
};
struct ExpectedRangeTy {
ExpectedLocationTy Begin;
ExpectedLocationTy End;
void testEquality(SourceRange R, SourceManager &SM) const {
Begin.testEquality(R.getBegin(), SM);
End.testEquality(R.getEnd(), SM);
}
};
struct ExpectedPieceTy {
ExpectedLocationTy Loc;
std::string Text;
std::vector<ExpectedRangeTy> Ranges;
void testEquality(const PathDiagnosticPiece &Piece, SourceManager &SM) {
Loc.testEquality(Piece.getLocation().asLocation(), SM);
EXPECT_EQ(Piece.getString(), Text);
EXPECT_EQ(Ranges.size(), Piece.getRanges().size());
for (const auto &RangeItem : llvm::enumerate(Piece.getRanges()))
Ranges[RangeItem.index()].testEquality(RangeItem.value(), SM);
}
};
struct ExpectedDiagTy {
ExpectedLocationTy Loc;
std::string VerboseDescription;
std::string ShortDescription;
std::string CheckerName;
std::string BugType;
std::string Category;
std::vector<ExpectedPieceTy> Path;
void testEquality(const PathDiagnostic &Diag, SourceManager &SM) {
Loc.testEquality(Diag.getLocation().asLocation(), SM);
EXPECT_EQ(Diag.getVerboseDescription(), VerboseDescription);
EXPECT_EQ(Diag.getShortDescription(), ShortDescription);
EXPECT_EQ(Diag.getCheckerName(), CheckerName);
EXPECT_EQ(Diag.getBugType(), BugType);
EXPECT_EQ(Diag.getCategory(), Category);
EXPECT_EQ(Path.size(), Diag.path.size());
for (const auto &PieceItem : llvm::enumerate(Diag.path)) {
if (PieceItem.index() < Path.size())
Path[PieceItem.index()].testEquality(*PieceItem.value(), SM);
}
}
};
using ExpectedDiagsTy = std::vector<ExpectedDiagTy>;
// A consumer to verify the generated diagnostics.
class VerifyPathDiagnosticConsumer : public PathDiagnosticConsumer {
ExpectedDiagsTy ExpectedDiags;
SourceManager &SM;
public:
VerifyPathDiagnosticConsumer(ExpectedDiagsTy &&ExpectedDiags,
SourceManager &SM)
: ExpectedDiags(ExpectedDiags), SM(SM) {}
StringRef getName() const override { return "verify test diagnostics"; }
void FlushDiagnosticsImpl(std::vector<const PathDiagnostic *> &Diags,
FilesMade *filesMade) override {
EXPECT_EQ(Diags.size(), ExpectedDiags.size());
for (const auto &Item : llvm::enumerate(Diags))
if (Item.index() < ExpectedDiags.size())
ExpectedDiags[Item.index()].testEquality(*Item.value(), SM);
}
};
} // namespace ento
} // namespace clang
#endif
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