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lookup.cpp
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#include "main.hpp"
#include "dbjson.hpp"
#include "compat.h"
#include "clang/AST/RecordLayout.h"
void DbJSONClassVisitor::lookForLiteral(const Expr* E, std::set<DbJSONClassVisitor::LiteralHolder>& refs,
unsigned pos) {
switch(E->getStmtClass()) {
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
lookForLiteral(ICE->getSubExpr(),refs,pos);
break;
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
lookForLiteral(PE->getSubExpr(),refs,pos);
break;
}
case Stmt::ArraySubscriptExprClass:
{
const ArraySubscriptExpr* ASE = static_cast<const ArraySubscriptExpr*>(E);
lookForLiteral(ASE->getLHS(),refs,pos);
break;
}
case Stmt::UnaryOperatorClass:
{
const UnaryOperator* UO = static_cast<const UnaryOperator*>(E);
lookForLiteral(UO->getSubExpr(),refs,pos);
break;
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
lookForLiteral(CSCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXConstCastExprClass:
{
const CXXConstCastExpr* CCE = static_cast<const CXXConstCastExpr*>(E);
lookForLiteral(CCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXReinterpretCastExprClass:
{
const CXXReinterpretCastExpr* RCE = static_cast<const CXXReinterpretCastExpr*>(E);
lookForLiteral(RCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXFunctionalCastExprClass:
{
const CXXFunctionalCastExpr* FCE = static_cast<const CXXFunctionalCastExpr*>(E);
lookForLiteral(FCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXBindTemporaryExprClass:
{
const CXXBindTemporaryExpr* BTE = static_cast<const CXXBindTemporaryExpr*>(E);
lookForLiteral(BTE->getSubExpr(),refs,pos);
break;
}
case Stmt::BinaryOperatorClass:
{
const BinaryOperator* BO = static_cast<const BinaryOperator*>(E);
lookForLiteral(BO->getLHS(),refs,pos);
lookForLiteral(BO->getRHS(),refs,pos);
break;
}
case Stmt::ConditionalOperatorClass:
{
const ConditionalOperator* CO = static_cast<const ConditionalOperator*>(E);
lookForLiteral(CO->getLHS(),refs,pos);
lookForLiteral(CO->getRHS(),refs,pos);
break;
}
case Stmt::BinaryConditionalOperatorClass:
{
const BinaryConditionalOperator* BCO = static_cast<const BinaryConditionalOperator*>(E);
lookForLiteral(BCO->getCommon(),refs,pos);
lookForLiteral(BCO->getFalseExpr(),refs,pos);
break;
}
case Stmt::IntegerLiteralClass:
{
const IntegerLiteral* IL = static_cast<const IntegerLiteral*>(E);
DbJSONClassVisitor::LiteralHolder lh;
lh.type = DbJSONClassVisitor::LiteralHolder::LiteralInteger;
lh.prvLiteral.integerLiteral = llvm::APSInt(IL->getValue(),IL->getType()->isUnsignedIntegerOrEnumerationType());
lh.pos = pos;
refs.insert(lh);
break;
}
case Stmt::CharacterLiteralClass:
{
const CharacterLiteral* CL = static_cast<const CharacterLiteral*>(E);
DbJSONClassVisitor::LiteralHolder lh;
lh.type = DbJSONClassVisitor::LiteralHolder::LiteralChar;
lh.prvLiteral.charLiteral = CL->getValue();
lh.pos = pos;
refs.insert(lh);
break;
}
case Stmt::StringLiteralClass:
{
const StringLiteral* SL = static_cast<const StringLiteral*>(E);
DbJSONClassVisitor::LiteralHolder lh;
lh.type = DbJSONClassVisitor::LiteralHolder::LiteralString;
lh.prvLiteral.stringLiteral = SL->getBytes().str();
/* Remove invalid control characters which break json parsing */
lh.prvLiteral.stringLiteral.erase(std::remove(lh.prvLiteral.stringLiteral.begin(),lh.prvLiteral.stringLiteral.end(),'\x1f'),lh.prvLiteral.stringLiteral.end());
lh.pos = pos;
refs.insert(lh);
break;
}
case Stmt::FloatingLiteralClass:
{
const FloatingLiteral* FL = static_cast<const FloatingLiteral*>(E);
DbJSONClassVisitor::LiteralHolder lh;
lh.type = DbJSONClassVisitor::LiteralHolder::LiteralFloat;
llvm::APFloat FV = FL->getValue();
if (&FV.getSemantics()==&llvm::APFloat::IEEEsingle()) {
lh.prvLiteral.floatingLiteral = FL->getValue().convertToFloat();
}
else {
lh.prvLiteral.floatingLiteral = FL->getValue().convertToDouble();
}
lh.pos = pos;
refs.insert(lh);
break;
}
case Stmt::UnaryExprOrTypeTraitExprClass:
case Stmt::StmtExprClass:
case Stmt::PredefinedExprClass:
case Stmt::CompoundLiteralExprClass:
case Stmt::PackExpansionExprClass:
case Stmt::CXXUnresolvedConstructExprClass:
case Stmt::CXXDependentScopeMemberExprClass:
case Stmt::CXXThisExprClass:
case Stmt::DeclRefExprClass:
case Stmt::CXXTemporaryObjectExprClass:
case Stmt::CXXNullPtrLiteralExprClass:
case Stmt::CXXBoolLiteralExprClass:
case Stmt::DependentScopeDeclRefExprClass:
case Stmt::UnresolvedLookupExprClass:
case Stmt::SizeOfPackExprClass:
case Stmt::CXXDefaultArgExprClass:
case Stmt::GNUNullExprClass:
{
break;
}
case Stmt::LambdaExprClass:
{
// TODO: implement usage of catched variables
break;
}
case Stmt::MemberExprClass:
{
const MemberExpr* ME = static_cast<const MemberExpr*>(E);
lookForLiteral(ME->getBase(),refs,pos);
break;
}
case Stmt::CXXStaticCastExprClass:
{
const CXXStaticCastExpr* SCE = static_cast<const CXXStaticCastExpr*>(E);
lookForLiteral(SCE->getSubExpr(),refs,pos);
break;
}
case Stmt::MaterializeTemporaryExprClass:
{
const MaterializeTemporaryExpr* MTE = static_cast<const MaterializeTemporaryExpr*>(E);
lookForLiteral(MTE->getSubExpr(),refs,pos);
break;
}
case Stmt::ExprWithCleanupsClass:
{
const ExprWithCleanups* EWC = static_cast<const ExprWithCleanups*>(E);
lookForLiteral(EWC->getSubExpr(),refs,pos);
break;
}
case Stmt::CallExprClass:
{
const CallExpr* CE = static_cast<const CallExpr*>(E);
std::set<DbJSONClassVisitor::LiteralHolder> __literalrefs;
for (unsigned i=0; i!=CE->getNumArgs(); ++i) {
lookForLiteral(CE->getArg(i),__literalrefs,pos);
}
for (auto i = __literalrefs.begin(); i!=__literalrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXConstructExprClass:
{
const CXXConstructExpr* CE = static_cast<const CXXConstructExpr*>(E);
std::set<DbJSONClassVisitor::LiteralHolder> __literalrefs;
for (unsigned i=0; i!=CE->getNumArgs(); ++i) {
lookForLiteral(CE->getArg(i),__literalrefs,pos);
}
for (auto i = __literalrefs.begin(); i!=__literalrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXOperatorCallExprClass:
{
const CXXOperatorCallExpr* OCE = static_cast<const CXXOperatorCallExpr*>(E);
std::set<DbJSONClassVisitor::LiteralHolder> __literalrefs;
for (unsigned i=0; i!=OCE->getNumArgs(); ++i) {
lookForLiteral(OCE->getArg(i),__literalrefs,pos);
}
for (auto i = __literalrefs.begin(); i!=__literalrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXMemberCallExprClass:
{
const CXXMemberCallExpr* MCE = static_cast<const CXXMemberCallExpr*>(E);
lookForLiteral(MCE->getImplicitObjectArgument(),refs,pos);
std::set<DbJSONClassVisitor::LiteralHolder> __literalrefs;
for (unsigned i=0; i!=MCE->getNumArgs(); ++i) {
lookForLiteral(MCE->getArg(i),__literalrefs,pos);
}
for (auto i = __literalrefs.begin(); i!=__literalrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
default:
{
if (opts.exit_on_error) {
llvm::outs() << "\nERROR: No implementation in lookForLiteral for:\n";
E->dump();
exit(EXIT_FAILURE);
}
else {
unsupportedExprRefs.insert(std::string(E->getStmtClassName()));
}
}
}
}
void DbJSONClassVisitor::lookForDeclRefExprsWithStmtExpr(const Expr* E, std::set<ValueHolder>& refs, unsigned pos ) {
switch(E->getStmtClass()) {
case Stmt::StmtExprClass:
{
const StmtExpr* SE = static_cast<const StmtExpr*>(E);
const CompoundStmt* CS = SE->getSubStmt();
CompoundStmt::const_body_iterator i = CS->body_begin();
if (i!=CS->body_end()) {
/* We have at least one statement in the body; get the last one */
i = CS->body_end()-1;
const Stmt* S = *i;
lookForDeclRefExprsWithStmtExpr(cast<Expr>(S),refs,pos);
}
break;
}
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
lookForDeclRefExprsWithStmtExpr(ICE->getSubExpr(),refs,pos);
break;
}
case Stmt::ConstantExprClass:
{
const ConstantExpr* CE = static_cast<const ConstantExpr*>(E);
lookForDeclRefExprsWithStmtExpr(CE->getSubExpr(),refs,pos);
break;
}
case Stmt::MemberExprClass:
{
const MemberExpr* ME = static_cast<const MemberExpr*>(E);
lookForDeclRefExprsWithStmtExpr(ME->getBase(),refs,pos);
break;
}
case Stmt::CXXStaticCastExprClass:
{
const CXXStaticCastExpr* SCE = static_cast<const CXXStaticCastExpr*>(E);
lookForDeclRefExprsWithStmtExpr(SCE->getSubExpr(),refs,pos);
break;
}
case Stmt::MaterializeTemporaryExprClass:
{
const MaterializeTemporaryExpr* MTE = static_cast<const MaterializeTemporaryExpr*>(E);
lookForDeclRefExprsWithStmtExpr(MTE->getSubExpr(),refs,pos);
break;
}
case Stmt::ExprWithCleanupsClass:
{
const ExprWithCleanups* EWC = static_cast<const ExprWithCleanups*>(E);
lookForDeclRefExprsWithStmtExpr(EWC->getSubExpr(),refs,pos);
break;
}
case Stmt::DeclRefExprClass:
{
const DeclRefExpr* DRE = static_cast<const DeclRefExpr*>(E);
const ValueDecl* v = DRE->getDecl();
refs.insert(ValueHolder(v,pos));
break;
}
case Stmt::ArraySubscriptExprClass:
{
const ArraySubscriptExpr* ASE = static_cast<const ArraySubscriptExpr*>(E);
lookForDeclRefExprsWithStmtExpr(ASE->getLHS(),refs,pos);
break;
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
lookForDeclRefExprsWithStmtExpr(PE->getSubExpr(),refs,pos);
break;
}
case Stmt::UnaryOperatorClass:
{
const UnaryOperator* UO = static_cast<const UnaryOperator*>(E);
lookForDeclRefExprsWithStmtExpr(UO->getSubExpr(),refs,pos);
break;
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
lookForDeclRefExprsWithStmtExpr(CSCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXConstCastExprClass:
{
const CXXConstCastExpr* CCE = static_cast<const CXXConstCastExpr*>(E);
lookForDeclRefExprsWithStmtExpr(CCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXReinterpretCastExprClass:
{
const CXXReinterpretCastExpr* RCE = static_cast<const CXXReinterpretCastExpr*>(E);
lookForDeclRefExprsWithStmtExpr(RCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXFunctionalCastExprClass:
{
const CXXFunctionalCastExpr* FCE = static_cast<const CXXFunctionalCastExpr*>(E);
lookForDeclRefExprsWithStmtExpr(FCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXBindTemporaryExprClass:
{
const CXXBindTemporaryExpr* BTE = static_cast<const CXXBindTemporaryExpr*>(E);
lookForDeclRefExprsWithStmtExpr(BTE->getSubExpr(),refs,pos);
break;
}
case Stmt::BinaryOperatorClass:
{
const BinaryOperator* BO = static_cast<const BinaryOperator*>(E);
lookForDeclRefExprsWithStmtExpr(BO->getLHS(),refs,pos);
lookForDeclRefExprsWithStmtExpr(BO->getRHS(),refs,pos);
break;
}
case Stmt::ConditionalOperatorClass:
{
const ConditionalOperator* CO = static_cast<const ConditionalOperator*>(E);
lookForDeclRefExprsWithStmtExpr(CO->getLHS(),refs,pos);
lookForDeclRefExprsWithStmtExpr(CO->getRHS(),refs,pos);
break;
}
case Stmt::BinaryConditionalOperatorClass:
{
const BinaryConditionalOperator* BCO = static_cast<const BinaryConditionalOperator*>(E);
lookForDeclRefExprsWithStmtExpr(BCO->getCommon(),refs,pos);
lookForDeclRefExprsWithStmtExpr(BCO->getFalseExpr(),refs,pos);
break;
}
case Stmt::IntegerLiteralClass:
case Stmt::CharacterLiteralClass:
case Stmt::StringLiteralClass:
case Stmt::FloatingLiteralClass:
case Stmt::UnaryExprOrTypeTraitExprClass:
case Stmt::PredefinedExprClass:
case Stmt::CompoundLiteralExprClass:
case Stmt::PackExpansionExprClass:
case Stmt::CXXUnresolvedConstructExprClass:
case Stmt::CXXDependentScopeMemberExprClass:
case Stmt::CXXThisExprClass:
case Stmt::CXXTemporaryObjectExprClass:
case Stmt::CXXNullPtrLiteralExprClass:
case Stmt::CXXBoolLiteralExprClass:
case Stmt::DependentScopeDeclRefExprClass:
case Stmt::UnresolvedLookupExprClass:
case Stmt::SizeOfPackExprClass:
case Stmt::CXXDefaultArgExprClass:
case Stmt::GNUNullExprClass:
{
break;
}
case Stmt::LambdaExprClass:
{
// TODO: implement usage of catched variables
break;
}
case Stmt::CallExprClass:
{
const CallExpr* CE = static_cast<const CallExpr*>(E);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=CE->getNumArgs(); ++i) {
lookForDeclRefExprsWithStmtExpr(CE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXConstructExprClass:
{
const CXXConstructExpr* CE = static_cast<const CXXConstructExpr*>(E);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=CE->getNumArgs(); ++i) {
lookForDeclRefExprsWithStmtExpr(CE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXOperatorCallExprClass:
{
const CXXOperatorCallExpr* OCE = static_cast<const CXXOperatorCallExpr*>(E);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=OCE->getNumArgs(); ++i) {
lookForDeclRefExprsWithStmtExpr(OCE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXMemberCallExprClass:
{
const CXXMemberCallExpr* MCE = static_cast<const CXXMemberCallExpr*>(E);
lookForDeclRefExprs(MCE->getImplicitObjectArgument(),refs);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=MCE->getNumArgs(); ++i) {
lookForDeclRefExprsWithStmtExpr(MCE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
default:
{
if (opts.exit_on_error) {
llvm::outs() << "\nERROR: No implementation in lookForDeclRefExprsWithStmtExpr for:\n";
E->dump();
exit(EXIT_FAILURE);
}
else {
unsupportedExprWithMemberExprRefs.insert(std::string(E->getStmtClassName()));
}
}
}
}
void DbJSONClassVisitor::lookForDeclRefExprs(const Expr* E, std::set<ValueHolder>& refs, unsigned pos ) {
switch(E->getStmtClass()) {
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
lookForDeclRefExprs(ICE->getSubExpr(),refs,pos);
break;
}
case Stmt::ConstantExprClass:
{
const ConstantExpr* CE = static_cast<const ConstantExpr*>(E);
lookForDeclRefExprs(CE->getSubExpr(),refs,pos);
break;
}
case Stmt::MemberExprClass:
{
const MemberExpr* ME = static_cast<const MemberExpr*>(E);
lookForDeclRefExprs(ME->getBase(),refs,pos);
break;
}
case Stmt::CXXStaticCastExprClass:
{
const CXXStaticCastExpr* SCE = static_cast<const CXXStaticCastExpr*>(E);
lookForDeclRefExprs(SCE->getSubExpr(),refs,pos);
break;
}
case Stmt::MaterializeTemporaryExprClass:
{
const MaterializeTemporaryExpr* MTE = static_cast<const MaterializeTemporaryExpr*>(E);
lookForDeclRefExprs(MTE->getSubExpr(),refs,pos);
break;
}
case Stmt::ExprWithCleanupsClass:
{
const ExprWithCleanups* EWC = static_cast<const ExprWithCleanups*>(E);
lookForDeclRefExprs(EWC->getSubExpr(),refs,pos);
break;
}
case Stmt::DeclRefExprClass:
{
const DeclRefExpr* DRE = static_cast<const DeclRefExpr*>(E);
const ValueDecl* v = DRE->getDecl();
refs.insert(ValueHolder(v,pos));
break;
}
case Stmt::ArraySubscriptExprClass:
{
const ArraySubscriptExpr* ASE = static_cast<const ArraySubscriptExpr*>(E);
lookForDeclRefExprs(ASE->getLHS(),refs,pos);
break;
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
lookForDeclRefExprs(PE->getSubExpr(),refs,pos);
break;
}
case Stmt::UnaryOperatorClass:
{
const UnaryOperator* UO = static_cast<const UnaryOperator*>(E);
lookForDeclRefExprs(UO->getSubExpr(),refs,pos);
break;
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
lookForDeclRefExprs(CSCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXConstCastExprClass:
{
const CXXConstCastExpr* CCE = static_cast<const CXXConstCastExpr*>(E);
lookForDeclRefExprs(CCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXReinterpretCastExprClass:
{
const CXXReinterpretCastExpr* RCE = static_cast<const CXXReinterpretCastExpr*>(E);
lookForDeclRefExprs(RCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXFunctionalCastExprClass:
{
const CXXFunctionalCastExpr* FCE = static_cast<const CXXFunctionalCastExpr*>(E);
lookForDeclRefExprs(FCE->getSubExpr(),refs,pos);
break;
}
case Stmt::CXXBindTemporaryExprClass:
{
const CXXBindTemporaryExpr* BTE = static_cast<const CXXBindTemporaryExpr*>(E);
lookForDeclRefExprs(BTE->getSubExpr(),refs,pos);
break;
}
case Stmt::BinaryOperatorClass:
{
const BinaryOperator* BO = static_cast<const BinaryOperator*>(E);
lookForDeclRefExprs(BO->getLHS(),refs,pos);
lookForDeclRefExprs(BO->getRHS(),refs,pos);
break;
}
case Stmt::ConditionalOperatorClass:
{
const ConditionalOperator* CO = static_cast<const ConditionalOperator*>(E);
lookForDeclRefExprs(CO->getLHS(),refs,pos);
lookForDeclRefExprs(CO->getRHS(),refs,pos);
break;
}
case Stmt::BinaryConditionalOperatorClass:
{
const BinaryConditionalOperator* BCO = static_cast<const BinaryConditionalOperator*>(E);
lookForDeclRefExprs(BCO->getCommon(),refs,pos);
lookForDeclRefExprs(BCO->getFalseExpr(),refs,pos);
break;
}
case Stmt::IntegerLiteralClass:
case Stmt::CharacterLiteralClass:
case Stmt::StringLiteralClass:
case Stmt::FloatingLiteralClass:
case Stmt::UnaryExprOrTypeTraitExprClass:
case Stmt::StmtExprClass:
case Stmt::PredefinedExprClass:
case Stmt::CompoundLiteralExprClass:
case Stmt::PackExpansionExprClass:
case Stmt::CXXUnresolvedConstructExprClass:
case Stmt::CXXDependentScopeMemberExprClass:
case Stmt::CXXThisExprClass:
case Stmt::CXXTemporaryObjectExprClass:
case Stmt::CXXNullPtrLiteralExprClass:
case Stmt::CXXBoolLiteralExprClass:
case Stmt::DependentScopeDeclRefExprClass:
case Stmt::UnresolvedLookupExprClass:
case Stmt::SizeOfPackExprClass:
case Stmt::CXXDefaultArgExprClass:
case Stmt::GNUNullExprClass:
{
break;
}
case Stmt::LambdaExprClass:
{
// TODO: implement usage of catched variables
break;
}
case Stmt::CallExprClass:
{
const CallExpr* CE = static_cast<const CallExpr*>(E);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=CE->getNumArgs(); ++i) {
lookForDeclRefExprs(CE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXConstructExprClass:
{
const CXXConstructExpr* CE = static_cast<const CXXConstructExpr*>(E);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=CE->getNumArgs(); ++i) {
lookForDeclRefExprs(CE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXOperatorCallExprClass:
{
const CXXOperatorCallExpr* OCE = static_cast<const CXXOperatorCallExpr*>(E);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=OCE->getNumArgs(); ++i) {
lookForDeclRefExprs(OCE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
case Stmt::CXXMemberCallExprClass:
{
const CXXMemberCallExpr* MCE = static_cast<const CXXMemberCallExpr*>(E);
lookForDeclRefExprs(MCE->getImplicitObjectArgument(),refs);
std::set<ValueHolder> __callrefs;
for (unsigned i=0; i!=MCE->getNumArgs(); ++i) {
lookForDeclRefExprs(MCE->getArg(i),__callrefs,pos);
}
for (auto i = __callrefs.begin(); i!=__callrefs.end(); ++i) {
refs.insert(*i);
}
break;
}
default:
{
if (opts.exit_on_error) {
llvm::outs() << "\nERROR: No implementation in lookForDeclRefWithMemberExprs for:\n";
E->dump();
exit(EXIT_FAILURE);
}
else {
unsupportedExprWithMemberExprRefs.insert(std::string(E->getStmtClassName()));
}
}
}
}
void DbJSONClassVisitor::lookForDeclRefWithMemberExprsInternalFromStmt(const Stmt* S, DREMap_t& refs, lookup_cache_t& cache,
bool* compoundStmtSeen, unsigned MEIdx, const CallExpr* CE, bool secondaryChain) {
/* TODO: implement extraction of referenced variables from statements */
switch(S->getStmtClass()) {
case Stmt::DoStmtClass:
{
const DoStmt* Do = static_cast<const DoStmt*>(S);
//lookForDeclRefWithMemberExprsInternal(ICE->getSubExpr(),refs,cache,compoundStmtSeen,CE);
break;
}
case Stmt::DeclStmtClass:
{
const DeclStmt* Decl = static_cast<const DeclStmt*>(S);
//lookForDeclRefWithMemberExprsInternal(ICE->getSubExpr(),refs,cache,compoundStmtSeen,CE);
break;
}
case Stmt::GCCAsmStmtClass:
{
const GCCAsmStmt* GccAsm = static_cast<const GCCAsmStmt*>(S);
//lookForDeclRefWithMemberExprsInternal(ICE->getSubExpr(),refs,cache,compoundStmtSeen,CE);
break;
}
default:
{
if (opts.exit_on_error) {
llvm::outs() << "\nERROR: No implementation in lookForDeclRefExprs(Stmt) for:\n";
S->dump();
exit(EXIT_FAILURE);
}
else {
unsupportedExprRefs.insert(std::string(S->getStmtClassName()));
}
}
}
}
bool DbJSONClassVisitor::verifyMemberExprBaseType(QualType T) {
switch(T->getTypeClass()) {
case Type::Decayed:
{
const DecayedType *tp = cast<DecayedType>(T);
return verifyMemberExprBaseType(tp->getAdjustedType());
}
case Type::Pointer:
{
const PointerType *tp = cast<PointerType>(T);
return verifyMemberExprBaseType(tp->getPointeeType());
}
case Type::Paren:
{
const ParenType *tp = cast<ParenType>(T);
return verifyMemberExprBaseType(tp->getInnerType());
}
case Type::Typedef:
{
const TypedefType *tp = cast<TypedefType>(T);
TypedefNameDecl* D = tp->getDecl();
return verifyMemberExprBaseType(D->getTypeSourceInfo()->getType());
}
case Type::TypeOfExpr:
{
const TypeOfExprType *tp= cast<TypeOfExprType>(T);
return verifyMemberExprBaseType(tp->getUnderlyingExpr()->getType());
}
case Type::TypeOf:
{
const TypeOfType *tp = cast<TypeOfType>(T);
return verifyMemberExprBaseType(tp->getUnmodifiedType());
}
case Type::Elaborated:
{
const ElaboratedType *tp = cast<ElaboratedType>(T);
return verifyMemberExprBaseType(tp->getNamedType());
}
case Type::Attributed:
{
const AttributedType *tp = cast<AttributedType>(T);
return verifyMemberExprBaseType(tp->getModifiedType());
}
COMPAT_VERSION_GE(15,
case Type::BTFTagAttributed:
{
const BTFTagAttributedType *tp = cast<BTFTagAttributedType>(T);
return verifyMemberExprBaseType(tp->getWrappedType());
}
)
case Type::MacroQualified:
{
const MacroQualifiedType *tp = cast<MacroQualifiedType>(T);
return verifyMemberExprBaseType(tp->getUnderlyingType());
}
case Type::Record:
{
return true;
}
default:
break;
}
return false;
}
const ArraySubscriptExpr* DbJSONClassVisitor::lookForArraySubscriptExprInCallExpr(const Expr* E) {
switch(E->getStmtClass()) {
case Stmt::CallExprClass:
{
const CallExpr* CE = static_cast<const CallExpr*>(E);
return lookForArraySubscriptExprInCallExpr(CE->getCallee());
}
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
return lookForArraySubscriptExprInCallExpr(ICE->getSubExpr());
}
case Stmt::DeclRefExprClass:
return 0;
case Stmt::MemberExprClass:
return 0;
case Stmt::ArraySubscriptExprClass:
{
const ArraySubscriptExpr* ASE = static_cast<const ArraySubscriptExpr*>(E);
return ASE;
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
return lookForArraySubscriptExprInCallExpr(PE->getSubExpr());
}
case Stmt::UnaryOperatorClass:
{
const UnaryOperator* UO = static_cast<const UnaryOperator*>(E);
return lookForArraySubscriptExprInCallExpr(UO->getSubExpr());
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
return lookForArraySubscriptExprInCallExpr(CSCE->getSubExpr());
}
}
return 0;
}
const Expr* DbJSONClassVisitor::stripCastsEx(const Expr* E, std::vector<CStyleCastOrType>& vC) {
switch(E->getStmtClass()) {
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
vC.push_back(CStyleCastOrType(ICE->getType()));
return stripCastsEx(ICE->getSubExpr(),vC);
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
vC.push_back(const_cast<CStyleCastExpr*>(CSCE));
return stripCastsEx(CSCE->getSubExpr(),vC);
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
return stripCastsEx(PE->getSubExpr(),vC);
}
}
return E;
}
const Expr* DbJSONClassVisitor::stripCasts(const Expr* E, QualType* castType) {
switch(E->getStmtClass()) {
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
if (castType) {
*castType = ICE->getType();
}
return stripCasts(ICE->getSubExpr());
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
if (castType) {
*castType = CSCE->getType();
}
return stripCasts(CSCE->getSubExpr());
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
return stripCasts(PE->getSubExpr(),castType);
}
}
return E;
}
const UnaryOperator* DbJSONClassVisitor::lookForUnaryOperatorInCallExpr(const Expr* E) {
switch(E->getStmtClass()) {
case Stmt::CallExprClass:
{
const CallExpr* CE = static_cast<const CallExpr*>(E);
return lookForUnaryOperatorInCallExpr(CE->getCallee());
}
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
return lookForUnaryOperatorInCallExpr(ICE->getSubExpr());
}
case Stmt::DeclRefExprClass:
return 0;
case Stmt::MemberExprClass:
return 0;
case Stmt::ArraySubscriptExprClass:
{
const ArraySubscriptExpr* ASE = static_cast<const ArraySubscriptExpr*>(E);
return lookForUnaryOperatorInCallExpr(ASE->getLHS());
}
case Stmt::ParenExprClass:
{
const ParenExpr* PE = static_cast<const ParenExpr*>(E);
return lookForUnaryOperatorInCallExpr(PE->getSubExpr());
}
case Stmt::UnaryOperatorClass:
{
const UnaryOperator* UO = static_cast<const UnaryOperator*>(E);
return UO;
}
case Stmt::CStyleCastExprClass:
{
const CStyleCastExpr* CSCE = static_cast<const CStyleCastExpr*>(E);
return lookForUnaryOperatorInCallExpr(CSCE->getSubExpr());
}
}
return 0;
}
bool DbJSONClassVisitor::DREMap_add(DREMap_t& refs, ValueDeclOrCallExprOrAddressOrMEOrUnaryOrAS& v, vMCtuple_t& vMCtuple) {
/* Check if the MC pair is already present in refs multimap for any of its keys
* If not present add new key with unique MC pair value
*/
bool MCfound = false;
for (auto itr = refs.begin(); itr != refs.end(); itr++) {
if (itr->first==v) {
if (itr->second==vMCtuple) {
MCfound=true;
break;
}
}
}
if (!MCfound) {
refs.insert(std::pair<ValueDeclOrCallExprOrAddressOrMEOrUnaryOrAS,vMCtuple_t>(v,vMCtuple));
return true;
}
return false;
}
/* Look for variables (DeclRefExpr) or constant address values (IntegerLiteral, CharacterLiteral) and
* save each occurrence in the 'refs' mapping
* i.e. in 'a.b->c->d' the DeclRefExpr points to 'a' and in '((struct B *)30)->a' the address value is 30
* Keep track of implicit or explicit casts and corresponding member expressions and link each
* MemberExpr chain with the variable in 'refs'
* In some cases the bottom MemberExpr might originate from a function call therefore the saved variable will be
* a call reference, i.e. 'getB('x',3.0)->a.i'
* Normally there is only one MemberExpr chain (therefore we have only one variable at the bottom of the chain
* which is the root variable of the MemberExpr)
* In some cases we might have multiple variables in the MemberExpr chain. This can happen in two cases:
* 1. CompoundLiteral initializer is used at the bottom of MemberExpr chain (root variable of the MemberExpr), i.e.
* ((struct A){.i=3,.pB=gi}).pB->a
* 2. StmtExpr is used at the bottom of MemberExpr chain (root variable of the MemberExpr), i.e.
* ({do {} while(0); (struct A*)0+gi;})->i
* It can also happen that the primary MemberExpr chain diverges into multiple secondary chains, like in the example below:
* (&((pA->pB+4)->a)+gi+pA->i)->i
* Here each MemberExpr along the chain has multiple variables at its base (and some of them can be another MemberExpr)
* TODO: (...)
*/
void DbJSONClassVisitor::lookForDeclRefWithMemberExprsInternal(const Expr* E, const Expr* origExpr, DREMap_t& refs, lookup_cache_t& cache,
bool* compoundStmtSeen, unsigned MEIdx, unsigned* MECnt, const CallExpr* CE, bool secondaryChain, bool IgnoreLiteral,
bool noticeInitListExpr, QualType castType) {
if (!castType.isNull()) {
get_ccast(cache).push_back(CStyleCastOrType(castType));
}
switch(E->getStmtClass()) {
case Stmt::ImplicitCastExprClass:
{
const ImplicitCastExpr* ICE = static_cast<const ImplicitCastExpr*>(E);
if (get_member(cache).size()>get_type(cache).size()) {
get_type(cache).push_back(CastExprOrType(static_cast<CastExpr*>(const_cast<ImplicitCastExpr*>(ICE))));
}
lookForDeclRefWithMemberExprsInternal(ICE->getSubExpr(),origExpr,refs,cache,compoundStmtSeen,MEIdx,MECnt,CE,
secondaryChain,IgnoreLiteral,noticeInitListExpr);
break;
}
case Stmt::ConstantExprClass:
{
const ConstantExpr* ConstExpr = static_cast<const ConstantExpr*>(E);
lookForDeclRefWithMemberExprsInternal(ConstExpr->getSubExpr(),origExpr,refs,cache,compoundStmtSeen,MEIdx,MECnt,CE,
secondaryChain,IgnoreLiteral,noticeInitListExpr);
break;
}
case Stmt::MemberExprClass:
{
const MemberExpr* ME = static_cast<const MemberExpr*>(E);
if (secondaryChain) {
QualType METype;
if (get_type(cache).size()>0) {
METype = get_type(cache).back().getFinalType();
}
else {
METype = ME->getMemberDecl()->getType();
}
ValueDeclOrCallExprOrAddressOrMEOrUnaryOrAS v;
CStyleCastOrType valuecast;
if (get_ccast(cache).size()>0) {
valuecast = getMatchingCast(get_ccast(cache));
}
else {
valuecast = CStyleCastOrType(ME->getType());
noticeTypeClass(ME->getType());
}
v.setME(ME,METype,valuecast);
v.setMeIdx(MEIdx);