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/*
This file is part of cpp-ethereum.
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/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Unit tests for the solidity scanner.
*/
#include <libsolidity/Scanner.h>
#include <boost/test/unit_test.hpp>
namespace dev
{
namespace solidity
{
namespace test
{
BOOST_AUTO_TEST_SUITE(SolidityScanner)
BOOST_AUTO_TEST_CASE(test_empty)
{
Scanner scanner(CharStream(""));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(smoke_test)
{
Scanner scanner(CharStream("function break;765 \t \"string1\",'string2'\nidentifier1"));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::FUNCTION);
BOOST_CHECK_EQUAL(scanner.next(), Token::BREAK);
BOOST_CHECK_EQUAL(scanner.next(), Token::SEMICOLON);
BOOST_CHECK_EQUAL(scanner.next(), Token::NUMBER);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "765");
BOOST_CHECK_EQUAL(scanner.next(), Token::STRING_LITERAL);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "string1");
BOOST_CHECK_EQUAL(scanner.next(), Token::COMMA);
BOOST_CHECK_EQUAL(scanner.next(), Token::STRING_LITERAL);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "string2");
BOOST_CHECK_EQUAL(scanner.next(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "identifier1");
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(string_escapes)
{
Scanner scanner(CharStream(" { \"a\\x61\""));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::LBRACE);
BOOST_CHECK_EQUAL(scanner.next(), Token::STRING_LITERAL);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "aa");
}
BOOST_AUTO_TEST_CASE(string_escapes_with_zero)
{
Scanner scanner(CharStream(" { \"a\\x61\\x00abc\""));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::LBRACE);
BOOST_CHECK_EQUAL(scanner.next(), Token::STRING_LITERAL);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), std::string("aa\0abc", 6));
}
BOOST_AUTO_TEST_CASE(string_escape_illegal)
{
Scanner scanner(CharStream(" bla \"\\x6rf\" (illegalescape)"));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.next(), Token::ILLEGAL);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "");
// TODO recovery from illegal tokens should be improved
BOOST_CHECK_EQUAL(scanner.next(), Token::ILLEGAL);
BOOST_CHECK_EQUAL(scanner.next(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.next(), Token::ILLEGAL);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(hex_numbers)
{
Scanner scanner(CharStream("var x = 0x765432536763762734623472346;"));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::VAR);
BOOST_CHECK_EQUAL(scanner.next(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.next(), Token::ASSIGN);
BOOST_CHECK_EQUAL(scanner.next(), Token::NUMBER);
BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "0x765432536763762734623472346");
BOOST_CHECK_EQUAL(scanner.next(), Token::SEMICOLON);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(locations)
{
Scanner scanner(CharStream("function_identifier has ; -0x743/*comment*/\n ident //comment"));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 0);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().end, 19);
BOOST_CHECK_EQUAL(scanner.next(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 20);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().end, 23);
BOOST_CHECK_EQUAL(scanner.next(), Token::SEMICOLON);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 24);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().end, 25);
BOOST_CHECK_EQUAL(scanner.next(), Token::SUB);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 26);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().end, 27);
BOOST_CHECK_EQUAL(scanner.next(), Token::NUMBER);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 27);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().end, 32);
BOOST_CHECK_EQUAL(scanner.next(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 45);
BOOST_CHECK_EQUAL(scanner.getCurrentLocation().end, 50);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(ambiguities)
{
// test scanning of some operators which need look-ahead
Scanner scanner(CharStream("<=""<""+ +=a++ =>""<<"));
BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::LTE);
BOOST_CHECK_EQUAL(scanner.next(), Token::LT);
BOOST_CHECK_EQUAL(scanner.next(), Token::ADD);
BOOST_CHECK_EQUAL(scanner.next(), Token::ASSIGN_ADD);
BOOST_CHECK_EQUAL(scanner.next(), Token::IDENTIFIER);
BOOST_CHECK_EQUAL(scanner.next(), Token::INC);
BOOST_CHECK_EQUAL(scanner.next(), Token::ARROW);
BOOST_CHECK_EQUAL(scanner.next(), Token::SHL);
}
BOOST_AUTO_TEST_SUITE_END()
}
}
} // end namespaces
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