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#include "TestingSupport.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/Decl.h"
#include "clang/AST/Stmt.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/ASTMatchers/ASTMatchers.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TokenKinds.h"
#include "clang/Lex/Lexer.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/Support/Error.h"
#include "llvm/Testing/Annotations/Annotations.h"
#include <cassert>
#include <functional>
#include <memory>
#include <string>
#include <system_error>
#include <utility>
#include <vector>
using namespace clang;
using namespace dataflow;
using namespace ast_matchers;
static bool
isAnnotationDirectlyAfterStatement(const Stmt *Stmt, unsigned AnnotationBegin,
const SourceManager &SourceManager,
const LangOptions &LangOptions) {
auto NextToken =
Lexer::findNextToken(Stmt->getEndLoc(), SourceManager, LangOptions);
while (NextToken && SourceManager.getFileOffset(NextToken->getLocation()) <
AnnotationBegin) {
if (NextToken->isNot(tok::semi))
return false;
NextToken = Lexer::findNextToken(NextToken->getEndLoc(), SourceManager,
LangOptions);
}
return true;
}
llvm::DenseMap<unsigned, std::string> test::buildLineToAnnotationMapping(
const SourceManager &SM, const LangOptions &LangOpts,
SourceRange BoundingRange, llvm::Annotations AnnotatedCode) {
CharSourceRange CharBoundingRange =
Lexer::getAsCharRange(BoundingRange, SM, LangOpts);
llvm::DenseMap<unsigned, std::string> LineNumberToContent;
auto Code = AnnotatedCode.code();
auto Annotations = AnnotatedCode.ranges();
for (auto &AnnotationRange : Annotations) {
SourceLocation Loc = SM.getLocForStartOfFile(SM.getMainFileID())
.getLocWithOffset(AnnotationRange.Begin);
if (SM.isPointWithin(Loc, CharBoundingRange.getBegin(),
CharBoundingRange.getEnd())) {
LineNumberToContent[SM.getPresumedLineNumber(Loc)] =
Code.slice(AnnotationRange.Begin, AnnotationRange.End).str();
}
}
return LineNumberToContent;
}
llvm::Expected<llvm::DenseMap<const Stmt *, std::string>>
test::buildStatementToAnnotationMapping(const FunctionDecl *Func,
llvm::Annotations AnnotatedCode) {
llvm::DenseMap<const Stmt *, std::string> Result;
llvm::StringSet<> ExistingAnnotations;
auto StmtMatcher =
findAll(stmt(unless(anyOf(hasParent(expr()), hasParent(returnStmt()))))
.bind("stmt"));
// This map should stay sorted because the binding algorithm relies on the
// ordering of statement offsets
std::map<unsigned, const Stmt *> Stmts;
auto &Context = Func->getASTContext();
auto &SourceManager = Context.getSourceManager();
for (auto &Match : match(StmtMatcher, *Func->getBody(), Context)) {
const auto *S = Match.getNodeAs<Stmt>("stmt");
unsigned Offset = SourceManager.getFileOffset(S->getEndLoc());
Stmts[Offset] = S;
}
unsigned FunctionBeginOffset =
SourceManager.getFileOffset(Func->getBeginLoc());
unsigned FunctionEndOffset = SourceManager.getFileOffset(Func->getEndLoc());
std::vector<llvm::Annotations::Range> Annotations = AnnotatedCode.ranges();
llvm::erase_if(Annotations, [=](llvm::Annotations::Range R) {
return R.Begin < FunctionBeginOffset || R.End >= FunctionEndOffset;
});
std::reverse(Annotations.begin(), Annotations.end());
auto Code = AnnotatedCode.code();
unsigned I = 0;
for (auto OffsetAndStmt = Stmts.rbegin(); OffsetAndStmt != Stmts.rend();
OffsetAndStmt++) {
unsigned Offset = OffsetAndStmt->first;
const Stmt *Stmt = OffsetAndStmt->second;
if (I < Annotations.size() && Annotations[I].Begin >= Offset) {
auto Range = Annotations[I];
if (!isAnnotationDirectlyAfterStatement(Stmt, Range.Begin, SourceManager,
Context.getLangOpts())) {
return llvm::createStringError(
std::make_error_code(std::errc::invalid_argument),
"Annotation is not placed after a statement: %s",
SourceManager.getLocForStartOfFile(SourceManager.getMainFileID())
.getLocWithOffset(Offset)
.printToString(SourceManager)
.data());
}
auto Annotation = Code.slice(Range.Begin, Range.End).str();
if (!ExistingAnnotations.insert(Annotation).second) {
return llvm::createStringError(
std::make_error_code(std::errc::invalid_argument),
"Repeated use of annotation: %s", Annotation.data());
}
Result[Stmt] = std::move(Annotation);
I++;
if (I < Annotations.size() && Annotations[I].Begin >= Offset) {
return llvm::createStringError(
std::make_error_code(std::errc::invalid_argument),
"Multiple annotations bound to the statement at the location: %s",
Stmt->getBeginLoc().printToString(SourceManager).data());
}
}
}
if (I < Annotations.size()) {
return llvm::createStringError(
std::make_error_code(std::errc::invalid_argument),
"Not all annotations were bound to statements. Unbound annotation at: "
"%s",
SourceManager.getLocForStartOfFile(SourceManager.getMainFileID())
.getLocWithOffset(Annotations[I].Begin)
.printToString(SourceManager)
.data());
}
return Result;
}
const ValueDecl *test::findValueDecl(ASTContext &ASTCtx, llvm::StringRef Name) {
auto TargetNodes = match(valueDecl(hasName(Name)).bind("v"), ASTCtx);
assert(TargetNodes.size() == 1 && "Name must be unique");
auto *const Result = selectFirst<ValueDecl>("v", TargetNodes);
assert(Result != nullptr);
return Result;
}
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