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//===-- Differentiator.cpp ------------------------------------------------===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Differentiator.h"
#include <iomanip>
#include <sstream>
using namespace klee;
namespace klee {
bool isSymArg(std::string name) {
return (name.size() == 5 // string::starts_with requires C++20
&& name[0] == 'a' && name[1] == 'r' && name[2] == 'g'
&& '0' <= name[3] && name[3] <= '9'
&& '0' <= name[4] && name[4] <= '9');
}
bool isSymOut(std::string name) {
// string::starts_with requires C++20
return (name[0] == 'o' && name[1] == 'u' && name[2] == 't' && name[3] == '!'
&& '0' <= name[name.size() - 1] && name[name.size() - 1] <= '9');
}
std::string quoted(const std::string& s) {
std::stringstream ss;
ss << std::quoted(s);
return ss.str();
}
inline char hex(unsigned char c) {
return (c < 10) ? '0' + c : 'a' + c - 10;
}
void writeHex(llvm::raw_ostream& os, std::string s) {
for (const auto c : s)
os << "\\x" << hex(c >> 4) << hex(c & 0xf);
}
llvm::raw_ostream &operator<<(llvm::raw_ostream& os, const Differentiator& d) {
os << "{(";
uint8_t last = 0;
for (const auto& p : d.args) {
assert(p.first == last);
if (last)
os << " ";
os << quoted(p.second);
last++;
}
os << ") {";
last = 0;
for (const auto& p : d.outputs) {
os << (last ? " :" : ":") << p.first << " {"; os << d.revA << " ";
writeHex(os, p.second.first);
os << " " << d.revB << " ";
writeHex(os, p.second.second);
os << "}";
last++;
}
os << "}}";
return os;
}
}
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