forked from OSchip/llvm-project
230 lines
7.5 KiB
C++
230 lines
7.5 KiB
C++
//=- ClangSACheckersEmitter.cpp - Generate Clang SA checkers tables -*- C++ -*-
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This tablegen backend emits Clang Static Analyzer checkers tables.
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//
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//===----------------------------------------------------------------------===//
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#include "ClangSACheckersEmitter.h"
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#include "Record.h"
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#include "llvm/ADT/DenseSet.h"
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#include <map>
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#include <string>
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// Static Analyzer Checkers Tables generation
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//===----------------------------------------------------------------------===//
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/// \brief True if it is specified hidden or a parent package is specified
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/// as hidden, otherwise false.
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static bool isHidden(const Record &R) {
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if (R.getValueAsBit("Hidden"))
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return true;
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// Not declared as hidden, check the parent package if it is hidden.
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if (DefInit *DI = dynamic_cast<DefInit*>(R.getValueInit("ParentPackage")))
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return isHidden(*DI->getDef());
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return false;
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}
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static bool isCheckerNamed(const Record *R) {
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return !R->getValueAsString("CheckerName").empty();
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}
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static std::string getPackageFullName(const Record *R);
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static std::string getParentPackageFullName(const Record *R) {
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std::string name;
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if (DefInit *DI = dynamic_cast<DefInit*>(R->getValueInit("ParentPackage")))
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name = getPackageFullName(DI->getDef());
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return name;
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}
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static std::string getPackageFullName(const Record *R) {
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std::string name = getParentPackageFullName(R);
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if (!name.empty()) name += ".";
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return name + R->getValueAsString("PackageName");
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}
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static std::string getCheckerFullName(const Record *R) {
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std::string name = getParentPackageFullName(R);
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if (isCheckerNamed(R)) {
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if (!name.empty()) name += ".";
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name += R->getValueAsString("CheckerName");
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}
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return name;
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}
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static std::string getStringValue(const Record &R, StringRef field) {
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if (StringInit *
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SI = dynamic_cast<StringInit*>(R.getValueInit(field)))
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return SI->getValue();
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return std::string();
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}
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namespace {
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struct GroupInfo {
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std::vector<const Record*> Checkers;
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llvm::DenseSet<const Record *> SubGroups;
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bool Hidden;
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unsigned Index;
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GroupInfo() : Hidden(false) { }
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};
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}
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void ClangSACheckersEmitter::run(raw_ostream &OS) {
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std::vector<Record*> checkers = Records.getAllDerivedDefinitions("Checker");
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llvm::DenseMap<const Record *, unsigned> checkerRecIndexMap;
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for (unsigned i = 0, e = checkers.size(); i != e; ++i)
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checkerRecIndexMap[checkers[i]] = i;
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OS << "\n#ifdef GET_CHECKERS\n";
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for (unsigned i = 0, e = checkers.size(); i != e; ++i) {
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const Record &R = *checkers[i];
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OS << "CHECKER(" << "\"";
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std::string name;
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if (isCheckerNamed(&R))
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name = getCheckerFullName(&R);
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OS.write_escaped(name) << "\", ";
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OS << R.getName() << ", ";
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OS << getStringValue(R, "DescFile") << ", ";
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OS << "\"";
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OS.write_escaped(getStringValue(R, "HelpText")) << "\", ";
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// Hidden bit
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if (isHidden(R))
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OS << "true";
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else
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OS << "false";
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OS << ")\n";
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}
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OS << "#endif // GET_CHECKERS\n\n";
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// Invert the mapping of checkers to package/group into a one to many
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// mapping of packages/groups to checkers.
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std::map<std::string, GroupInfo> groupInfoByName;
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llvm::DenseMap<const Record *, GroupInfo *> recordGroupMap;
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std::vector<Record*> packages = Records.getAllDerivedDefinitions("Package");
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for (unsigned i = 0, e = packages.size(); i != e; ++i) {
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Record *R = packages[i];
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std::string fullName = getPackageFullName(R);
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if (!fullName.empty()) {
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GroupInfo &info = groupInfoByName[fullName];
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info.Hidden = isHidden(*R);
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recordGroupMap[R] = &info;
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}
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}
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std::vector<Record*>
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checkerGroups = Records.getAllDerivedDefinitions("CheckerGroup");
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for (unsigned i = 0, e = checkerGroups.size(); i != e; ++i) {
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Record *R = checkerGroups[i];
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std::string name = R->getValueAsString("GroupName");
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if (!name.empty()) {
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GroupInfo &info = groupInfoByName[name];
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recordGroupMap[R] = &info;
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}
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}
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for (unsigned i = 0, e = checkers.size(); i != e; ++i) {
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Record *R = checkers[i];
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Record *package = 0;
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if (DefInit *
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DI = dynamic_cast<DefInit*>(R->getValueInit("ParentPackage")))
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package = DI->getDef();
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if (!isCheckerNamed(R) && !package)
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throw "Checker '" + R->getName() + "' is neither named, nor in a package!";
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if (isCheckerNamed(R)) {
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// Create a pseudo-group to hold this checker.
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std::string fullName = getCheckerFullName(R);
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GroupInfo &info = groupInfoByName[fullName];
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recordGroupMap[R] = &info;
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info.Checkers.push_back(R);
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} else {
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recordGroupMap[package]->Checkers.push_back(R);
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}
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Record *currR = isCheckerNamed(R) ? R : package;
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// Insert the checker and its parent packages into the subgroups set of
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// the corresponding parent package.
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while (DefInit *DI
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= dynamic_cast<DefInit*>(currR->getValueInit("ParentPackage"))) {
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Record *parentPackage = DI->getDef();
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recordGroupMap[parentPackage]->SubGroups.insert(currR);
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currR = parentPackage;
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}
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// Insert the checker into the set of its group.
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if (DefInit *DI = dynamic_cast<DefInit*>(R->getValueInit("Group")))
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recordGroupMap[DI->getDef()]->Checkers.push_back(R);
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}
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unsigned index = 0;
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for (std::map<std::string, GroupInfo>::iterator
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I = groupInfoByName.begin(), E = groupInfoByName.end(); I != E; ++I)
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I->second.Index = index++;
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// Walk through the packages/groups/checkers emitting an array for each
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// set of checkers and an array for each set of subpackages.
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OS << "\n#ifdef GET_MEMBER_ARRAYS\n";
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unsigned maxLen = 0;
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for (std::map<std::string, GroupInfo>::iterator
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I = groupInfoByName.begin(), E = groupInfoByName.end(); I != E; ++I) {
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maxLen = std::max(maxLen, (unsigned)I->first.size());
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std::vector<const Record*> &V = I->second.Checkers;
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if (!V.empty()) {
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OS << "static const short CheckerArray" << I->second.Index << "[] = { ";
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for (unsigned i = 0, e = V.size(); i != e; ++i)
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OS << checkerRecIndexMap[V[i]] << ", ";
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OS << "-1 };\n";
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}
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llvm::DenseSet<const Record *> &subGroups = I->second.SubGroups;
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if (!subGroups.empty()) {
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OS << "static const short SubPackageArray" << I->second.Index << "[] = { ";
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for (llvm::DenseSet<const Record *>::iterator
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I = subGroups.begin(), E = subGroups.end(); I != E; ++I) {
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OS << recordGroupMap[*I]->Index << ", ";
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}
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OS << "-1 };\n";
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}
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}
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OS << "#endif // GET_MEMBER_ARRAYS\n\n";
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OS << "\n#ifdef GET_CHECKNAME_TABLE\n";
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for (std::map<std::string, GroupInfo>::iterator
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I = groupInfoByName.begin(), E = groupInfoByName.end(); I != E; ++I) {
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// Group option string.
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OS << " { \"";
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OS.write_escaped(I->first) << "\","
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<< std::string(maxLen-I->first.size()+1, ' ');
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if (I->second.Checkers.empty())
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OS << "0, ";
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else
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OS << "CheckerArray" << I->second.Index << ", ";
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// Subgroups.
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if (I->second.SubGroups.empty())
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OS << "0, ";
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else
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OS << "SubPackageArray" << I->second.Index << ", ";
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OS << (I->second.Hidden ? "true" : "false");
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OS << " },\n";
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}
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OS << "#endif // GET_CHECKNAME_TABLE\n\n";
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}
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