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DSL_base.hpp
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#ifndef _SNARKFRONT_DSL_BASE_HPP_
#define _SNARKFRONT_DSL_BASE_HPP_
#include <array>
#include <cstdint>
#include <vector>
#include "Alg.hpp"
#include "Alg_BigInt.hpp"
#include "Alg_bool.hpp"
#include "Alg_uint.hpp"
#include "DataBuffer.hpp"
#include "PowersOf2.hpp"
namespace snarkfront {
////////////////////////////////////////////////////////////////////////////////
// algebraic types
//
// constants
template <typename FR> using c_bool = AST_Const<Alg_bool<FR>>;
template <typename FR> using c_bigint = AST_Const<Alg_BigInt<FR>>;
template <typename FR> using c_uint32 = AST_Const<Alg_uint32<FR>>;
template <typename FR> using c_uint64 = AST_Const<Alg_uint64<FR>>;
// variables
template <typename FR> using bool_x = AST_Var<Alg_bool<FR>>;
template <typename FR> using bigint_x = AST_Var<Alg_BigInt<FR>>;
template <typename FR> using uint32_x = AST_Var<Alg_uint32<FR>>;
template <typename FR> using uint64_x = AST_Var<Alg_uint64<FR>>;
////////////////////////////////////////////////////////////////////////////////
// convenient message digest for data
// (new variables for entire message block)
//
template <typename T>
typename T::DigType digest(T hashAlgo, const DataBufferStream& buf)
{
auto bufCopy = buf; // need copy as blessing from stream consumes it
while (! bufCopy.empty()) {
typename T::MsgType msg;
bless(msg, bufCopy);
hashAlgo.msgInput(msg);
}
hashAlgo.computeHash();
return hashAlgo.digest();
}
template <typename T>
typename T::DigType digest(T hashAlgo, const std::string& a)
{
DataBufferStream buf(a);
T::padMessage(buf);
return digest(hashAlgo, buf);
}
template <typename T>
typename T::DigType digest(T hashAlgo, const char* a)
{
return digest(hashAlgo, std::string(a));
}
template <typename T>
typename T::DigType digest(T hashAlgo, const std::vector<std::uint8_t>& a)
{
DataBufferStream buf(a);
T::padMessage(buf);
return digest(hashAlgo, buf);
}
template <typename T, typename... Args>
typename T::DigType digest(T hashAlgo, const Args... parameterPack)
{
DataBufferStream buf;
buf.push(parameterPack...);
T::padMessage(buf);
return digest(hashAlgo, buf);
}
////////////////////////////////////////////////////////////////////////////////
// logical and bitwise complement
//
#define DEFN_CMPLMNT(ALG, OP) \
template <typename FR> \
AST_Op<Alg_ ## ALG<FR>> \
operator OP( \
const AST_Node<Alg_ ## ALG<FR>>& x) \
{ \
return AST_Op<Alg_ ## ALG<FR>>(Alg_ ## ALG<FR>::OpType::CMPLMNT, \
x); \
}
DEFN_CMPLMNT(bool, !)
DEFN_CMPLMNT(uint32, ~)
DEFN_CMPLMNT(uint64, ~)
#undef DEFN_CMPLMNT
////////////////////////////////////////////////////////////////////////////////
// AND, OR, XOR, ADD, SUB, MUL, ADDMOD
//
#define DEFN_OP(ALG, OP, ENUM) \
template <typename FR> \
AST_Op<Alg_ ## ALG<FR>> \
operator OP( \
const AST_Node<Alg_ ## ALG<FR>>& x, \
const AST_Node<Alg_ ## ALG<FR>>& y) \
{ \
return AST_Op<Alg_ ## ALG<FR>>(Alg_ ## ALG<FR>::OpType:: ENUM, \
x, \
y); \
} \
template <typename FR> \
AST_Op<Alg_ ## ALG<FR>> \
operator OP( \
const AST_Node<Alg_ ## ALG<FR>>& x, \
const typename Alg_ ## ALG<FR>::ValueType& y) \
{ \
return AST_Op<Alg_ ## ALG<FR>>(Alg_ ## ALG<FR>::OpType:: ENUM, \
x, \
new AST_Const<Alg_ ## ALG<FR>>(y)); \
} \
template <typename FR> \
AST_Op<Alg_ ## ALG<FR>> \
operator OP( \
const typename Alg_ ## ALG<FR>::ValueType& x, \
const AST_Node<Alg_ ## ALG<FR>>& y) \
{ \
return AST_Op<Alg_ ## ALG<FR>>(Alg_ ## ALG<FR>::OpType:: ENUM, \
new AST_Const<Alg_ ## ALG<FR>>(x), \
y); \
}
DEFN_OP(bool, &&, AND)
DEFN_OP(uint32, &, AND)
DEFN_OP(uint64, &, AND)
DEFN_OP(bool, ||, OR)
DEFN_OP(uint32, |, OR)
DEFN_OP(uint64, |, OR)
DEFN_OP(uint32, ^, XOR)
DEFN_OP(uint64, ^, XOR)
DEFN_OP(BigInt, +, ADD)
DEFN_OP(BigInt, -, SUB)
DEFN_OP(BigInt, *, MUL)
DEFN_OP(uint32, +, ADDMOD)
DEFN_OP(uint64, +, ADDMOD)
#undef DEFN_OP
////////////////////////////////////////////////////////////////////////////////
// bitwise shift and rotate
//
#define DEFN_PERMUTE(ALG, OP, ENUM) \
template <typename FR> \
AST_Op<Alg_ ## ALG<FR>> \
OP( \
const AST_Node<Alg_ ## ALG<FR>>& x, \
const unsigned int n) \
{ \
return AST_Op<Alg_ ## ALG<FR>>(Alg_ ## ALG<FR>::OpType:: ENUM, \
x, \
new AST_Const<Alg_ ## ALG<FR>>(n)); \
}
DEFN_PERMUTE(uint32, operator<<, SHL)
DEFN_PERMUTE(uint64, operator<<, SHL)
DEFN_PERMUTE(uint32, operator>>, SHR)
DEFN_PERMUTE(uint64, operator>>, SHR)
DEFN_PERMUTE(uint32, ROTL, ROTL)
DEFN_PERMUTE(uint64, ROTL, ROTL)
DEFN_PERMUTE(uint32, ROTR, ROTR)
DEFN_PERMUTE(uint64, ROTR, ROTR)
#undef DEFN_PERMUTE
////////////////////////////////////////////////////////////////////////////////
// comparison
//
#define DEFN_CMP(ALG, OP, ENUM) \
template <typename FR> \
AST_X<Alg_bool<FR>> \
operator OP( \
const AST_Node<Alg_ ## ALG<FR>>& x, \
const AST_Node<Alg_ ## ALG<FR>>& y) \
{ \
return AST_X<Alg_bool<FR>>(Alg_ ## ALG<FR>::CmpType:: ENUM, \
x, \
y); \
} \
template <typename FR> \
AST_X<Alg_bool<FR>> \
operator OP( \
const AST_Node<Alg_ ## ALG<FR>>& x, \
const typename Alg_ ## ALG<FR>::ValueType& y) \
{ \
return AST_X<Alg_bool<FR>>(Alg_ ## ALG<FR>::CmpType:: ENUM, \
x, \
y); \
} \
template <typename FR> \
AST_X<Alg_bool<FR>> \
operator OP( \
const typename Alg_ ## ALG<FR>::ValueType& x, \
const AST_Node<Alg_ ## ALG<FR>>& y) \
{ \
return AST_X<Alg_bool<FR>>(Alg_ ## ALG<FR>::CmpType:: ENUM, \
x, \
y); \
}
DEFN_CMP(bool, ==, EQ)
DEFN_CMP(bool, !=, NEQ)
DEFN_CMP(BigInt, ==, EQ)
DEFN_CMP(BigInt, !=, EQ)
DEFN_CMP(BigInt, <, LT)
DEFN_CMP(BigInt, <=, LE)
DEFN_CMP(BigInt, >, GT)
DEFN_CMP(BigInt, >=, GE)
DEFN_CMP(uint32, ==, EQ)
DEFN_CMP(uint32, !=, EQ)
DEFN_CMP(uint64, ==, EQ)
DEFN_CMP(uint64, !=, EQ)
#undef DEFN_CMP
template <typename FR, typename T, typename U, std::size_t N>
class ArrayCmp;
template <typename FR, typename T, typename U>
class ArrayCmp<FR, T, U, 1>
{
public:
static
AST_X<Alg_bool<FR>>
equal(const std::array<T, 1>& x, const std::array<U, 1>& y) {
return x[0] == y[0];
}
static
AST_X<Alg_bool<FR>>
notEqual(const std::array<T, 1>& x, const std::array<U, 1>& y) {
return x[0] != y[0];
}
};
template <typename FR, typename T, typename U, std::size_t N>
class ArrayCmp
{
public:
static
AST_X<Alg_bool<FR>>
equal(const std::array<T, N>& x, const std::array<U, N>& y) {
std::array<T, N-1> xslice;
std::array<U, N-1> yslice;
for (std::size_t i = 0; i < N - 1; ++i) {
xslice[i] = x[i];
yslice[i] = y[i];
}
return
ArrayCmp<FR, T, U, N-1>::equal(xslice, yslice) &&
x[N-1] == y[N-1];
}
static
AST_X<Alg_bool<FR>>
notEqual(const std::array<T, N>& x, const std::array<U, N>& y) {
std::array<T, N-1> xslice;
std::array<U, N-1> yslice;
for (std::size_t i = 0; i < N - 1; ++i) {
xslice[i] = x[i];
yslice[i] = y[i];
}
return
ArrayCmp<FR, T, U, N-1>::notEqual(xslice, yslice) &&
x[N-1] != y[N-1];
}
};
#define DEFN_CMP_ARRAY(T, U) \
template <typename FR, std::size_t N> \
AST_X<Alg_bool<FR>> operator== (const std::array< T , N>& x, \
const std::array< U , N>& y) { \
return ArrayCmp<FR, T , U , N>::equal(x, y); \
} \
template <typename FR, std::size_t N> \
AST_X<Alg_bool<FR>> operator!= (const std::array< T , N>& x, \
const std::array< U , N>& y) { \
return ArrayCmp<FR, T , U , N>::notEqual(x, y); \
}
DEFN_CMP_ARRAY(uint32_x<FR>, uint32_x<FR>)
DEFN_CMP_ARRAY(uint32_x<FR>, std::uint32_t)
DEFN_CMP_ARRAY(std::uint32_t, uint32_x<FR>)
DEFN_CMP_ARRAY(uint64_x<FR>, uint64_x<FR>)
DEFN_CMP_ARRAY(uint64_x<FR>, std::uint64_t)
DEFN_CMP_ARRAY(std::uint64_t, uint64_x<FR>)
#undef DEFN_CMP_ARRAY
////////////////////////////////////////////////////////////////////////////////
// convert to and between 32-bit and 64-bit words
//
template <typename FR>
AST_X<Alg_uint32<FR>> xword(const AST_Node<Alg_uint64<FR>>& x) {
return AST_X<Alg_uint32<FR>>(x);
}
template <typename FR>
AST_X<Alg_uint64<FR>> xword(const AST_Node<Alg_uint32<FR>>& x) {
return AST_X<Alg_uint64<FR>>(x);
}
template <typename FR>
AST_X<Alg_uint32<FR>> xword(const AST_Node<Alg_bool<FR>>& x,
const AST_Node<Alg_uint32<FR>>& dummy) {
return AST_X<Alg_uint32<FR>>(x);
}
template <typename FR>
AST_X<Alg_uint64<FR>> xword(const AST_Node<Alg_bool<FR>>& x,
const AST_Node<Alg_uint64<FR>>& dummy) {
return AST_X<Alg_uint64<FR>>(x);
}
////////////////////////////////////////////////////////////////////////////////
// conditional operator (ternary)
//
template <typename FR>
AST_Op<Alg_uint32<FR>> ternary(const AST_Node<Alg_bool<FR>>& b,
const AST_Node<Alg_uint32<FR>>& x,
const AST_Node<Alg_uint32<FR>>& y)
{
return
// (x & xword(b)) | (y & ~xword(b))
AST_Op<Alg_uint32<FR>>(
Alg_uint32<FR>::OpType::OR,
// x & xword(b)
new AST_Op<Alg_uint32<FR>>(
Alg_uint32<FR>::OpType::AND,
x,
new AST_X<Alg_uint32<FR>>(b)),
// y & ~xword(b)
new AST_Op<Alg_uint32<FR>>(
Alg_uint32<FR>::OpType::AND,
y,
new AST_Op<Alg_uint32<FR>>(
Alg_uint32<FR>::OpType::CMPLMNT,
new AST_X<Alg_uint32<FR>>(b))));
}
template <typename FR>
AST_Op<Alg_uint64<FR>> ternary(const AST_Node<Alg_bool<FR>>& b,
const AST_Node<Alg_uint64<FR>>& x,
const AST_Node<Alg_uint64<FR>>& y)
{
return
// (x & xword(b)) | (y & ~xword(b))
AST_Op<Alg_uint64<FR>>(
Alg_uint64<FR>::OpType::OR,
// x & xword(b)
new AST_Op<Alg_uint64<FR>>(
Alg_uint64<FR>::OpType::AND,
x,
new AST_X<Alg_uint64<FR>>(b)),
// y & ~xword(b)
new AST_Op<Alg_uint64<FR>>(
Alg_uint64<FR>::OpType::AND,
y,
new AST_Op<Alg_uint64<FR>>(
Alg_uint64<FR>::OpType::CMPLMNT,
new AST_X<Alg_uint64<FR>>(b))));
}
template <typename FR, std::size_t N>
std::array<AST_Var<Alg_uint32<FR>>, N>
ternary(const AST_Node<Alg_bool<FR>>& b,
const std::array<AST_Var<Alg_uint32<FR>>, N>& x,
const std::array<AST_Var<Alg_uint32<FR>>, N>& y)
{
std::array<AST_Var<Alg_uint32<FR>>, N> result;
for (std::size_t i = 0; i < N; ++i) {
result[i] = ternary(b, x[i], y[i]);
}
return result;
}
template <typename FR, std::size_t N>
std::array<AST_Var<Alg_uint64<FR>>, N>
ternary(const AST_Node<Alg_bool<FR>>& b,
const std::array<AST_Var<Alg_uint64<FR>>, N>& x,
const std::array<AST_Var<Alg_uint64<FR>>, N>& y)
{
std::array<AST_Var<Alg_uint64<FR>>, N> result;
for (std::size_t i = 0; i < N; ++i) {
result[i] = ternary(b, x[i], y[i]);
}
return result;
}
std::uint32_t ternary(const bool b,
const std::uint32_t x,
const std::uint32_t y);
std::uint64_t ternary(const bool b,
const std::uint64_t x,
const std::uint64_t y);
template <std::size_t N>
std::array<std::uint32_t, N> ternary(const bool b,
const std::array<std::uint32_t, N>& x,
const std::array<std::uint32_t, N>& y)
{
std::array<std::uint32_t, N> result;
for (std::size_t i = 0; i < N; ++i) {
result[i] = ternary(b, x[i], y[i]);
}
return result;
}
template <std::size_t N>
std::array<std::uint64_t, N> ternary(const bool b,
const std::array<std::uint64_t, N>& x,
const std::array<std::uint64_t, N>& y)
{
std::array<std::uint64_t, N> result;
for (std::size_t i = 0; i < N; ++i) {
result[i] = ternary(b, x[i], y[i]);
}
return result;
}
} // namespace snarkfront
#endif