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//=- ClangSACheckersEmitter.cpp - Generate Clang SA checkers tables -*- C++ -*-
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This tablegen backend emits Clang Static Analyzer checkers tables.
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringMap.h"
#include "llvm/TableGen/Error.h"
#include "llvm/TableGen/Record.h"
#include "llvm/TableGen/TableGenBackend.h"
#include <map>
#include <string>
using namespace llvm;
//===----------------------------------------------------------------------===//
// Static Analyzer Checkers Tables generation
//===----------------------------------------------------------------------===//
static std::string getPackageFullName(const Record *R);
static std::string getParentPackageFullName(const Record *R) {
std::string name;
if (DefInit *DI = dyn_cast<DefInit>(R->getValueInit("ParentPackage")))
name = getPackageFullName(DI->getDef());
return name;
}
static std::string getPackageFullName(const Record *R) {
std::string name = getParentPackageFullName(R);
if (!name.empty())
name += ".";
assert(!R->getValueAsString("PackageName").empty());
name += R->getValueAsString("PackageName");
return name;
}
static std::string getCheckerFullName(const Record *R) {
std::string name = getParentPackageFullName(R);
if (!name.empty())
name += ".";
assert(!R->getValueAsString("CheckerName").empty());
name += R->getValueAsString("CheckerName");
return name;
}
static std::string getStringValue(const Record &R, StringRef field) {
if (StringInit *SI = dyn_cast<StringInit>(R.getValueInit(field)))
return SI->getValue();
return std::string();
}
// Calculates the integer value representing the BitsInit object
static inline uint64_t getValueFromBitsInit(const BitsInit *B) {
assert(B->getNumBits() <= sizeof(uint64_t) * 8 && "BitInits' too long!");
uint64_t Value = 0;
for (unsigned i = 0, e = B->getNumBits(); i != e; ++i) {
const auto *Bit = cast<BitInit>(B->getBit(i));
Value |= uint64_t(Bit->getValue()) << i;
}
return Value;
}
static std::string getCheckerDocs(const Record &R) {
StringRef LandingPage;
if (BitsInit *BI = R.getValueAsBitsInit("Documentation")) {
uint64_t V = getValueFromBitsInit(BI);
if (V == 1)
LandingPage = "available_checks.html";
else if (V == 2)
LandingPage = "alpha_checks.html";
}
if (LandingPage.empty())
return "";
return (llvm::Twine("https://clang-analyzer.llvm.org/") + LandingPage + "#" +
getCheckerFullName(&R))
.str();
}
namespace clang {
void EmitClangSACheckers(RecordKeeper &Records, raw_ostream &OS) {
std::vector<Record*> checkers = Records.getAllDerivedDefinitions("Checker");
std::vector<Record*> packages = Records.getAllDerivedDefinitions("Package");
using SortedRecords = llvm::StringMap<const Record *>;
OS << "// This file is automatically generated. Do not edit this file by "
"hand.\n";
OS << "\n#ifdef GET_PACKAGES\n";
{
SortedRecords sortedPackages;
for (unsigned i = 0, e = packages.size(); i != e; ++i)
sortedPackages[getPackageFullName(packages[i])] = packages[i];
for (SortedRecords::iterator
I = sortedPackages.begin(), E = sortedPackages.end(); I != E; ++I) {
const Record &R = *I->second;
OS << "PACKAGE(" << "\"";
OS.write_escaped(getPackageFullName(&R)) << '\"';
OS << ")\n";
}
}
OS << "#endif // GET_PACKAGES\n\n";
OS << "\n#ifdef GET_CHECKERS\n";
for (unsigned i = 0, e = checkers.size(); i != e; ++i) {
const Record &R = *checkers[i];
OS << "CHECKER(" << "\"";
OS.write_escaped(getCheckerFullName(&R)) << "\", ";
OS << R.getName() << ", ";
OS << "\"";
OS.write_escaped(getStringValue(R, "HelpText")) << "\", ";
OS << "\"";
OS.write_escaped(getCheckerDocs(R));
OS << "\"";
OS << ")\n";
}
OS << "#endif // GET_CHECKERS\n\n";
}
} // end namespace clang
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