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#include "expr/Lexer.h"
#include "expr/Parser.h"
#include "klee/Constraints.h"
#include "klee/Expr.h"
#include "klee/Solver.h"
#include "klee/util/ExprPPrinter.h"
#include "klee/util/ExprVisitor.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Streams.h"
#include "llvm/System/Signals.h"
#include <iomanip>
#include <sstream>
using namespace llvm;
using namespace klee;
using namespace klee::expr;
namespace {
llvm::cl::opt<std::string>
InputFile(llvm::cl::desc("<input query log>"), llvm::cl::Positional,
llvm::cl::init("-"));
enum ToolActions {
PrintTokens,
PrintAST,
Evaluate
};
static llvm::cl::opt<ToolActions>
ToolAction(llvm::cl::desc("Tool actions:"),
llvm::cl::init(Evaluate),
llvm::cl::values(
clEnumValN(PrintTokens, "print-tokens",
"Print tokens from the input file."),
clEnumValN(PrintAST, "print-ast",
"Print parsed AST nodes from the input file."),
clEnumValN(Evaluate, "evaluate",
"Print parsed AST nodes from the input file."),
clEnumValEnd));
}
static std::string escapedString(const char *start, unsigned length) {
std::stringstream s;
for (unsigned i=0; i<length; ++i) {
char c = start[i];
if (isprint(c)) {
s << c;
} else if (c == '\n') {
s << "\\n";
} else {
s << "\\x"
<< hexdigit(((unsigned char) c >> 4) & 0xF)
<< hexdigit((unsigned char) c & 0xF);
}
}
return s.str();
}
static void PrintInputTokens(const MemoryBuffer *MB) {
Lexer L(MB);
Token T;
do {
L.Lex(T);
llvm::cout << "(Token \"" << T.getKindName() << "\" "
<< "\"" << escapedString(T.start, T.length) << "\" "
<< T.length << " "
<< T.line << " " << T.column << ")\n";
} while (T.kind != Token::EndOfFile);
}
static bool PrintInputAST(const char *Filename,
const MemoryBuffer *MB) {
std::vector<Decl*> Decls;
Parser *P = Parser::Create(Filename, MB);
P->SetMaxErrors(20);
while (Decl *D = P->ParseTopLevelDecl()) {
if (!P->GetNumErrors())
D->dump();
Decls.push_back(D);
}
bool success = true;
if (unsigned N = P->GetNumErrors()) {
llvm::cerr << Filename << ": parse failure: "
<< N << " errors.\n";
success = false;
}
for (std::vector<Decl*>::iterator it = Decls.begin(),
ie = Decls.end(); it != ie; ++it)
delete *it;
delete P;
return success;
}
static bool EvaluateInputAST(const char *Filename,
const MemoryBuffer *MB) {
std::vector<Decl*> Decls;
Parser *P = Parser::Create(Filename, MB);
P->SetMaxErrors(20);
while (Decl *D = P->ParseTopLevelDecl()) {
Decls.push_back(D);
}
bool success = true;
if (unsigned N = P->GetNumErrors()) {
llvm::cerr << Filename << ": parse failure: "
<< N << " errors.\n";
success = false;
}
// FIXME: Support choice of solver.
Solver *S, *STP = new STPSolver(true);
S = createCexCachingSolver(STP);
S = createCachingSolver(S);
S = createIndependentSolver(S);
unsigned Index = 0;
for (std::vector<Decl*>::iterator it = Decls.begin(),
ie = Decls.end(); it != ie; ++it) {
Decl *D = *it;
if (QueryCommand *QC = dyn_cast<QueryCommand>(D)) {
llvm::cout << "Query " << Index << ":\t";
assert("FIXME: Support counterexample query commands!");
if (QC->Values.empty() && QC->Objects.empty()) {
bool result;
if (S->mustBeTrue(Query(ConstraintManager(QC->Constraints), QC->Query),
result)) {
llvm::cout << (result ? "VALID" : "INVALID");
} else {
llvm::cout << "FAIL";
}
} else if (!QC->Values.empty()) {
assert(QC->Objects.empty() &&
"FIXME: Support counterexamples for values and objects!");
assert(QC->Values.size() == 1 &&
"FIXME: Support counterexamples for multiple values!");
assert(QC->Query->isFalse() &&
"FIXME: Support counterexamples with non-trivial query!");
ref<ConstantExpr> result;
if (S->getValue(Query(ConstraintManager(QC->Constraints),
QC->Values[0]),
result)) {
llvm::cout << "INVALID\n";
llvm::cout << "\tExpr 0:\t" << result;
} else {
llvm::cout << "FAIL";
}
} else {
std::vector< std::vector<unsigned char> > result;
if (S->getInitialValues(Query(ConstraintManager(QC->Constraints),
QC->Query),
QC->Objects, result)) {
llvm::cout << "INVALID\n";
for (unsigned i = 0, e = result.size(); i != e; ++i) {
llvm::cout << "\tArray " << i << ":\t"
<< "arr" << QC->Objects[i]->id
<< "[";
for (unsigned j = 0; j != QC->Objects[i]->size; ++j) {
llvm::cout << (unsigned) result[i][j];
if (j + 1 != QC->Objects[i]->size)
llvm::cout << ", ";
}
llvm::cout << "]";
if (i + 1 != e)
llvm::cout << "\n";
}
} else {
llvm::cout << "FAIL";
}
}
llvm::cout << "\n";
++Index;
}
}
for (std::vector<Decl*>::iterator it = Decls.begin(),
ie = Decls.end(); it != ie; ++it)
delete *it;
delete P;
delete S;
return success;
}
int main(int argc, char **argv) {
bool success = true;
llvm::sys::PrintStackTraceOnErrorSignal();
llvm::cl::ParseCommandLineOptions(argc, argv);
std::string ErrorStr;
MemoryBuffer *MB = MemoryBuffer::getFileOrSTDIN(InputFile.c_str(), &ErrorStr);
if (!MB) {
llvm::cerr << argv[0] << ": error: " << ErrorStr << "\n";
return 1;
}
switch (ToolAction) {
case PrintTokens:
PrintInputTokens(MB);
break;
case PrintAST:
success = PrintInputAST(InputFile=="-" ? "<stdin>" : InputFile.c_str(), MB);
break;
case Evaluate:
success = EvaluateInputAST(InputFile=="-" ? "<stdin>" : InputFile.c_str(),
MB);
break;
default:
llvm::cerr << argv[0] << ": error: Unknown program action!\n";
}
delete MB;
llvm::llvm_shutdown();
return success ? 0 : 1;
}
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