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solidity/test/libsolidity/SolidityScanner.cpp
Alex Beregszaszi b079f34c65 Scanner tests for all shifts
2018-07-25 12:59:28 +01:00

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/*
This file is part of solidity.
solidity 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.
solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Unit tests for the solidity scanner.
*/
#include <libsolidity/parsing/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.currentToken(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(smoke_test)
{
Scanner scanner(CharStream("function break;765 \t \"string1\",'string2'\nidentifier1"));
BOOST_CHECK_EQUAL(scanner.currentToken(), 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.currentLiteral(), "765");
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "string1");
BOOST_CHECK_EQUAL(scanner.next(), Token::Comma);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "string2");
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "identifier1");
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(string_escapes)
{
Scanner scanner(CharStream(" { \"a\\x61\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "aa");
}
BOOST_AUTO_TEST_CASE(string_escapes_all)
{
Scanner scanner(CharStream(" { \"a\\x61\\b\\f\\n\\r\\t\\v\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "aa\b\f\n\r\t\v");
}
BOOST_AUTO_TEST_CASE(string_escapes_with_zero)
{
Scanner scanner(CharStream(" { \"a\\x61\\x00abc\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), std::string("aa\0abc", 6));
}
BOOST_AUTO_TEST_CASE(string_escape_illegal)
{
Scanner scanner(CharStream(" bla \"\\x6rf\" (illegalescape)"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "");
// 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.currentToken(), 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.currentLiteral(), "0x765432536763762734623472346");
BOOST_CHECK_EQUAL(scanner.next(), Token::Semicolon);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(octal_numbers)
{
Scanner scanner(CharStream("07"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Illegal);
scanner.reset(CharStream("007"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Illegal);
scanner.reset(CharStream("-07"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Sub);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
scanner.reset(CharStream("-.07"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Sub);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
scanner.reset(CharStream("0"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
scanner.reset(CharStream("0.1"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
}
BOOST_AUTO_TEST_CASE(scientific_notation)
{
Scanner scanner(CharStream("var x = 2e10;"));
BOOST_CHECK_EQUAL(scanner.currentToken(), 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.currentLiteral(), "2e10");
BOOST_CHECK_EQUAL(scanner.next(), Token::Semicolon);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(trailing_dot)
{
Scanner scanner(CharStream("2.5"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
scanner.reset(CharStream("2.5e10"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
scanner.reset(CharStream(".5"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
scanner.reset(CharStream(".5e10"), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
scanner.reset(CharStream("2."), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Number);
BOOST_CHECK_EQUAL(scanner.next(), Token::Period);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
}
BOOST_AUTO_TEST_CASE(negative_numbers)
{
Scanner scanner(CharStream("var x = -.2 + -0x78 + -7.3 + 8.9 + 2e-2;"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Var);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Assign);
BOOST_CHECK_EQUAL(scanner.next(), Token::Sub);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), ".2");
BOOST_CHECK_EQUAL(scanner.next(), Token::Add);
BOOST_CHECK_EQUAL(scanner.next(), Token::Sub);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "0x78");
BOOST_CHECK_EQUAL(scanner.next(), Token::Add);
BOOST_CHECK_EQUAL(scanner.next(), Token::Sub);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "7.3");
BOOST_CHECK_EQUAL(scanner.next(), Token::Add);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "8.9");
BOOST_CHECK_EQUAL(scanner.next(), Token::Add);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), "2e-2");
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.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.currentLocation().start, 0);
BOOST_CHECK_EQUAL(scanner.currentLocation().end, 19);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.currentLocation().start, 20);
BOOST_CHECK_EQUAL(scanner.currentLocation().end, 23);
BOOST_CHECK_EQUAL(scanner.next(), Token::Semicolon);
BOOST_CHECK_EQUAL(scanner.currentLocation().start, 24);
BOOST_CHECK_EQUAL(scanner.currentLocation().end, 25);
BOOST_CHECK_EQUAL(scanner.next(), Token::Sub);
BOOST_CHECK_EQUAL(scanner.next(), Token::Number);
BOOST_CHECK_EQUAL(scanner.currentLocation().start, 27);
BOOST_CHECK_EQUAL(scanner.currentLocation().end, 32);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.currentLocation().start, 45);
BOOST_CHECK_EQUAL(scanner.currentLocation().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.currentToken(), Token::LessThanOrEqual);
BOOST_CHECK_EQUAL(scanner.next(), Token::LessThan);
BOOST_CHECK_EQUAL(scanner.next(), Token::Add);
BOOST_CHECK_EQUAL(scanner.next(), Token::AssignAdd);
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_CHECK_EQUAL(scanner.next(), Token::SAR);
BOOST_CHECK_EQUAL(scanner.next(), Token::AssignSar);
BOOST_CHECK_EQUAL(scanner.next(), Token::SHR);
BOOST_CHECK_EQUAL(scanner.next(), Token::AssignShr);
// the last "monster" token combination
BOOST_CHECK_EQUAL(scanner.next(), Token::SHR);
BOOST_CHECK_EQUAL(scanner.next(), Token::AssignSar);
BOOST_CHECK_EQUAL(scanner.next(), Token::GreaterThan);
BOOST_CHECK_EQUAL(scanner.next(), Token::AssignShl);
}
BOOST_AUTO_TEST_CASE(documentation_comments_parsed_begin)
{
Scanner scanner(CharStream("/// Send $(value / 1000) chocolates to the user"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "Send $(value / 1000) chocolates to the user");
}
BOOST_AUTO_TEST_CASE(multiline_documentation_comments_parsed_begin)
{
Scanner scanner(CharStream("/** Send $(value / 1000) chocolates to the user*/"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "Send $(value / 1000) chocolates to the user");
}
BOOST_AUTO_TEST_CASE(documentation_comments_parsed)
{
Scanner scanner(CharStream("some other tokens /// Send $(value / 1000) chocolates to the user"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "Send $(value / 1000) chocolates to the user");
}
BOOST_AUTO_TEST_CASE(multiline_documentation_comments_parsed)
{
Scanner scanner(CharStream("some other tokens /**\n"
"* Send $(value / 1000) chocolates to the user\n"
"*/"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "Send $(value / 1000) chocolates to the user");
}
BOOST_AUTO_TEST_CASE(multiline_documentation_no_stars)
{
Scanner scanner(CharStream("some other tokens /**\n"
" Send $(value / 1000) chocolates to the user\n"
"*/"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "Send $(value / 1000) chocolates to the user");
}
BOOST_AUTO_TEST_CASE(multiline_documentation_whitespace_hell)
{
Scanner scanner(CharStream("some other tokens /** \t \r \n"
"\t \r * Send $(value / 1000) chocolates to the user\n"
"*/"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "Send $(value / 1000) chocolates to the user");
}
BOOST_AUTO_TEST_CASE(comment_before_eos)
{
Scanner scanner(CharStream("//"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "");
}
BOOST_AUTO_TEST_CASE(documentation_comment_before_eos)
{
Scanner scanner(CharStream("///"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "");
}
BOOST_AUTO_TEST_CASE(empty_multiline_comment)
{
Scanner scanner(CharStream("/**/"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "");
}
BOOST_AUTO_TEST_CASE(empty_multiline_documentation_comment_before_eos)
{
Scanner scanner(CharStream("/***/"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::EOS);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "");
}
BOOST_AUTO_TEST_CASE(comments_mixed_in_sequence)
{
Scanner scanner(CharStream("hello_world ///documentation comment \n"
"//simple comment \n"
"<<"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Identifier);
BOOST_CHECK_EQUAL(scanner.next(), Token::SHL);
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "documentation comment ");
}
BOOST_AUTO_TEST_CASE(ether_subdenominations)
{
Scanner scanner(CharStream("wei szabo finney ether"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::SubWei);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubSzabo);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubFinney);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubEther);
}
BOOST_AUTO_TEST_CASE(time_subdenominations)
{
Scanner scanner(CharStream("seconds minutes hours days weeks years"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::SubSecond);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubMinute);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubHour);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubDay);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubWeek);
BOOST_CHECK_EQUAL(scanner.next(), Token::SubYear);
}
BOOST_AUTO_TEST_CASE(empty_comment)
{
Scanner scanner(CharStream("//\ncontract{}"));
BOOST_CHECK_EQUAL(scanner.currentCommentLiteral(), "");
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::Contract);
BOOST_CHECK_EQUAL(scanner.next(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::RBrace);
}
BOOST_AUTO_TEST_CASE(valid_unicode_string_escape)
{
Scanner scanner(CharStream("{ \"\\u00DAnicode\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), std::string("\xC3\x9Anicode", 8));
}
BOOST_AUTO_TEST_CASE(valid_unicode_string_escape_7f)
{
Scanner scanner(CharStream("{ \"\\u007Fnicode\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), std::string("\x7Fnicode", 7));
}
BOOST_AUTO_TEST_CASE(valid_unicode_string_escape_7ff)
{
Scanner scanner(CharStream("{ \"\\u07FFnicode\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), std::string("\xDF\xBFnicode", 8));
}
BOOST_AUTO_TEST_CASE(valid_unicode_string_escape_ffff)
{
Scanner scanner(CharStream("{ \"\\uFFFFnicode\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), std::string("\xEF\xBF\xBFnicode", 9));
}
BOOST_AUTO_TEST_CASE(invalid_short_unicode_string_escape)
{
Scanner scanner(CharStream("{ \"\\uFFnicode\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
}
BOOST_AUTO_TEST_CASE(valid_hex_literal)
{
Scanner scanner(CharStream("{ hex\"00112233FF\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::StringLiteral);
BOOST_CHECK_EQUAL(scanner.currentLiteral(), std::string("\x00\x11\x22\x33\xFF", 5));
}
BOOST_AUTO_TEST_CASE(invalid_short_hex_literal)
{
Scanner scanner(CharStream("{ hex\"00112233F\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
}
BOOST_AUTO_TEST_CASE(invalid_hex_literal_with_space)
{
Scanner scanner(CharStream("{ hex\"00112233FF \""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
}
BOOST_AUTO_TEST_CASE(invalid_hex_literal_with_wrong_quotes)
{
Scanner scanner(CharStream("{ hex\"00112233FF'"));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
}
BOOST_AUTO_TEST_CASE(invalid_hex_literal_nonhex_string)
{
Scanner scanner(CharStream("{ hex\"hello\""));
BOOST_CHECK_EQUAL(scanner.currentToken(), Token::LBrace);
BOOST_CHECK_EQUAL(scanner.next(), Token::Illegal);
}
BOOST_AUTO_TEST_SUITE_END()
}
}
} // end namespaces
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