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Diffstat (limited to 'SolidityScanner.cpp')
| -rw-r--r-- | SolidityScanner.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/SolidityScanner.cpp b/SolidityScanner.cpp new file mode 100644 index 00000000..573affe6 --- /dev/null +++ b/SolidityScanner.cpp @@ -0,0 +1,201 @@ +/* + 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(negative_numbers) +{ + Scanner scanner(CharStream("var x = -.2 + -0x78 + -7.3 + 8.9;")); + 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(), "-.2"); + BOOST_CHECK_EQUAL(scanner.next(), Token::ADD); + BOOST_CHECK_EQUAL(scanner.next(), Token::NUMBER); + BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "-0x78"); + BOOST_CHECK_EQUAL(scanner.next(), Token::ADD); + BOOST_CHECK_EQUAL(scanner.next(), Token::NUMBER); + BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "-7.3"); + BOOST_CHECK_EQUAL(scanner.next(), Token::ADD); + BOOST_CHECK_EQUAL(scanner.next(), Token::NUMBER); + BOOST_CHECK_EQUAL(scanner.getCurrentLiteral(), "8.9"); + 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::NUMBER); + BOOST_CHECK_EQUAL(scanner.getCurrentLocation().start, 26); + 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_CASE(documentation_comments_parsed_begin) +{ + Scanner scanner(CharStream("/// Send $(value / 1000) chocolates to the user")); + BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::EOS); + BOOST_CHECK_EQUAL(scanner.getCurrentCommentLiteral(), " 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.getCurrentToken(), 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.getCurrentCommentLiteral(), " Send $(value / 1000) chocolates to the user"); +} + +BOOST_AUTO_TEST_CASE(comment_before_eos) +{ + Scanner scanner(CharStream("//")); + BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::EOS); + BOOST_CHECK_EQUAL(scanner.getCurrentCommentLiteral(), ""); +} + +BOOST_AUTO_TEST_CASE(documentation_comment_before_eos) +{ + Scanner scanner(CharStream("///")); + BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::EOS); + BOOST_CHECK_EQUAL(scanner.getCurrentCommentLiteral(), ""); +} + +BOOST_AUTO_TEST_CASE(comments_mixed_in_sequence) +{ + Scanner scanner(CharStream("hello_world ///documentation comment \n" + "//simple comment \n" + "<<")); + BOOST_CHECK_EQUAL(scanner.getCurrentToken(), Token::IDENTIFIER); + BOOST_CHECK_EQUAL(scanner.next(), Token::SHL); + BOOST_CHECK_EQUAL(scanner.getCurrentCommentLiteral(), "documentation comment "); +} + +BOOST_AUTO_TEST_SUITE_END() + +} +} +} // end namespaces |