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//
// Modifications as part of cpp-ethereum under the following license:
//
// cpp-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// cpp-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
#include <map>
#include <libsolidity/parsing/Token.h>
#include <boost/range/iterator_range.hpp>
using namespace std;
namespace dev
{
namespace solidity
{
void ElementaryTypeNameToken::assertDetails(Token::Value _baseType, unsigned const& _first, unsigned const& _second)
{
solAssert(Token::isElementaryTypeName(_baseType), "");
if (_baseType == Token::BytesM)
{
solAssert(_second == 0, "There should not be a second size argument to type bytesM.");
solAssert(_first <= 32, "No elementary type bytes" + to_string(_first) + ".");
}
else if (_baseType == Token::UIntM || _baseType == Token::IntM)
{
solAssert(_second == 0, "There should not be a second size argument to type " + string(Token::toString(_baseType)) + ".");
solAssert(
_first <= 256 && _first % 8 == 0,
"No elementary type " + string(Token::toString(_baseType)) + to_string(_first) + "."
);
}
else if (_baseType == Token::UFixedMxN || _baseType == Token::FixedMxN)
{
solAssert(
_first + _second <= 256 && _first % 8 == 0 && _second % 8 == 0,
"No elementary type " + string(Token::toString(_baseType)) + to_string(_first) + "x" + to_string(_second) + "."
);
}
m_token = _baseType;
m_firstNumber = _first;
m_secondNumber = _second;
}
#define T(name, string, precedence) #name,
char const* const Token::m_name[NUM_TOKENS] =
{
TOKEN_LIST(T, T)
};
#undef T
#define T(name, string, precedence) string,
char const* const Token::m_string[NUM_TOKENS] =
{
TOKEN_LIST(T, T)
};
#undef T
#define T(name, string, precedence) precedence,
int8_t const Token::m_precedence[NUM_TOKENS] =
{
TOKEN_LIST(T, T)
};
#undef T
#define KT(a, b, c) 'T',
#define KK(a, b, c) 'K',
char const Token::m_tokenType[] =
{
TOKEN_LIST(KT, KK)
};
int Token::parseSize(string::const_iterator _begin, string::const_iterator _end)
{
try
{
unsigned int m = boost::lexical_cast<int>(boost::make_iterator_range(_begin, _end));
return m;
}
catch(boost::bad_lexical_cast const&)
{
return -1;
}
}
tuple<Token::Value, unsigned int, unsigned int> Token::fromIdentifierOrKeyword(string const& _literal)
{
auto positionM = find_if(_literal.begin(), _literal.end(), ::isdigit);
if (positionM != _literal.end())
{
string baseType(_literal.begin(), positionM);
auto positionX = find_if_not(positionM, _literal.end(), ::isdigit);
int m = parseSize(positionM, positionX);
Token::Value keyword = keywordByName(baseType);
if (keyword == Token::Bytes)
{
if (0 < m && m <= 32 && positionX == _literal.end())
return make_tuple(Token::BytesM, m, 0);
}
else if (keyword == Token::UInt || keyword == Token::Int)
{
if (0 < m && m <= 256 && m % 8 == 0 && positionX == _literal.end())
{
if (keyword == Token::UInt)
return make_tuple(Token::UIntM, m, 0);
else
return make_tuple(Token::IntM, m, 0);
}
}
else if (keyword == Token::UFixed || keyword == Token::Fixed)
{
if (
positionM < positionX &&
positionX < _literal.end() &&
*positionX == 'x' &&
all_of(positionX + 1, _literal.end(), ::isdigit)
) {
int n = parseSize(positionX + 1, _literal.end());
if (
0 <= m && m <= 256 &&
0 <= n && n <= 256 &&
m + n > 0 &&
m + n <= 256 &&
m % 8 == 0 &&
n % 8 == 0
) {
if (keyword == Token::UFixed)
return make_tuple(Token::UFixedMxN, m, n);
else
return make_tuple(Token::FixedMxN, m, n);
}
}
}
return make_tuple(Token::Identifier, 0, 0);
}
return make_tuple(keywordByName(_literal), 0, 0);
}
Token::Value Token::keywordByName(string const& _name)
{
// The following macros are used inside TOKEN_LIST and cause non-keyword tokens to be ignored
// and keywords to be put inside the keywords variable.
#define KEYWORD(name, string, precedence) {string, Token::name},
#define TOKEN(name, string, precedence)
static const map<string, Token::Value> keywords({TOKEN_LIST(TOKEN, KEYWORD)});
#undef KEYWORD
#undef TOKEN
auto it = keywords.find(_name);
return it == keywords.end() ? Token::Identifier : it->second;
}
#undef KT
#undef KK
}
}
