500 lines
15 KiB
C++
500 lines
15 KiB
C++
/*
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* cppcheck - c/c++ syntax checking
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* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/
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*/
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// The preprocessor that c++check uses is a bit special. Instead of generating
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// the code for a known configuration, it generates the code for each configuration.
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#include "testsuite.h"
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#define UNIT_TESTING
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#include "preprocessor.h"
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#include <map>
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#include <string>
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class TestPreprocessor : public TestFixture
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{
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public:
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TestPreprocessor() : TestFixture("TestPreprocessor")
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{ }
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private:
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void run()
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{
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// Just read the code into a string. Perform simple cleanup of the code
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TEST_CASE(readCode);
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// The bug that started the whole work with the new preprocessor
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TEST_CASE(Bug2190219);
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TEST_CASE(test1);
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TEST_CASE(test2);
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TEST_CASE(test3);
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TEST_CASE(test4);
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TEST_CASE(test5);
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TEST_CASE(comments1);
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TEST_CASE(if0);
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TEST_CASE(if1);
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TEST_CASE(elif);
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TEST_CASE(include1);
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TEST_CASE(if_cond1);
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TEST_CASE(multiline);
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TEST_CASE(if_defined); // "#if defined(AAA)" => "#ifdef AAA"
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// Macros..
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TEST_CASE(macro_simple1);
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TEST_CASE(macro_simple2);
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TEST_CASE(macro_mismatch);
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TEST_CASE(macro_multiline);
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}
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void readCode()
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{
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const char code[] = " \t a //\n"
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" #aa\t /* remove this */\tb \r\n";
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Preprocessor p;
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std::istringstream istr(code);
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std::string codestr(p.read(istr));
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ASSERT_EQUALS("a \n#aa b \n", codestr);
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}
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bool cmpmaps(const std::map<std::string, std::string> &m1, const std::map<std::string, std::string> &m2)
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{
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// Begin by checking the sizes
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if (m1.size() != m2.size())
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return false;
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// Check each item in the maps..
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for (std::map<std::string, std::string>::const_iterator it1 = m1.begin(); it1 != m1.end(); ++it1)
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{
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std::string s1 = it1->first;
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std::map<std::string, std::string>::const_iterator it2 = m2.find(s1);
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if (it2 == m2.end())
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return false;
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else
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{
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std::string s1 = it1->second;
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std::string s2 = it2->second;
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if (s1 != s2)
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return false;
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}
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}
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// No diffs were found
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return true;
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}
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void Bug2190219()
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{
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const char filedata[] = "int main()\n"
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"{\n"
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"#ifdef __cplusplus\n"
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" int* flags = new int[10];\n"
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"#else\n"
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" int* flags = (int*)malloc((10)*sizeof(int));\n"
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"#endif\n"
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"\n"
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"#ifdef __cplusplus\n"
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" delete [] flags;\n"
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"#else\n"
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" free(flags);\n"
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"#endif\n"
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"}\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "int main()\n"
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"{\n"
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"\n"
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"\n"
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"\n"
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"int* flags = (int*)malloc((10)*sizeof(int));\n"
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"\n"
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"\n"
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"\n"
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"\n"
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"\n"
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"free(flags);\n"
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"\n"
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"}\n";
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expected["__cplusplus"] = "int main()\n"
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"{\n"
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"\n"
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"int* flags = new int[10];\n"
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"\n"
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"\n"
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"\n"
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"\n"
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"\n"
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"delete [] flags;\n"
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"\n"
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"\n"
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"\n"
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"}\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void test1()
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{
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const char filedata[] = "#ifdef WIN32 \n"
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" abcdef\n"
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"#else \n"
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" qwerty\n"
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"#endif \n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\nqwerty\n\n";
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expected["WIN32"] = "\nabcdef\n\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void test2()
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{
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const char filedata[] = "# ifndef WIN32\n"
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" \" # ifdef WIN32\" // a comment\n"
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" # else \n"
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" qwerty\n"
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" # endif \n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected["WIN32"] = "\n\n\nqwerty\n\n";
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expected[""] = "\n\" # ifdef WIN32\"\n\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void test3()
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{
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const char filedata[] = "#ifdef ABC\n"
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"a\n"
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"#ifdef DEF\n"
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"b\n"
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"#endif\n"
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"c\n"
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"#endif\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\n\n\n\n\n";
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expected["ABC"] = "\na\n\n\n\nc\n\n";
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expected["ABC;DEF"] = "\na\n\nb\n\nc\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void test4()
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{
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const char filedata[] = "#ifdef ABC\n"
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"A\n"
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"#endif\t\n"
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"#ifdef ABC\n"
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"A\n"
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"#endif\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\n\n\n\n";
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expected["ABC"] = "\nA\n\n\nA\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void test5()
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{
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const char filedata[] = "#ifdef ABC\n"
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"A\n"
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"#else\n"
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"B\n"
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"#ifdef DEF\n"
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"C\n"
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"#endif\n"
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"#endif\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\nB\n\n\n\n\n";
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expected["ABC"] = "\nA\n\n\n\n\n\n\n";
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expected["DEF"] = "\n\n\nB\n\nC\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void comments1()
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{
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const char filedata[] = "/*\n"
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"#ifdef WIN32\n"
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"#endif\n"
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"*/\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void if0()
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{
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const char filedata[] = " # if /* comment */ 0 // comment\n"
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"#ifdef WIN32\n"
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"#endif\n"
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"#endif\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void if1()
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{
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const char filedata[] = " # if /* comment */ 1 // comment\n"
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"ABC\n"
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" # endif \n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\nABC\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void elif()
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{
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const char filedata[] = "#if DEF1\n"
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"ABC\n"
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"#elif DEF2\n"
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"DEF\n"
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"#endif\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\n\n\n";
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expected["DEF1"] = "\nABC\n\n\n\n";
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expected["DEF2"] = "\n\n\nDEF\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void include1()
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{
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const char filedata[] = " # include \"abcd.h\" // abcd\n";
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// Expected result..
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std::map<std::string, std::string> expected;
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expected[""] = "#include \"abcd.h\"\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void if_cond1()
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{
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const char filedata[] = "#if LIBVER>100\n"
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" A\n"
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"#else\n"
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" B\n"
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"#endif\n";
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std::map<std::string, std::string> expected;
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expected[""] = "\n\n\nB\n\n";
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expected["LIBVER>100"] = "\nA\n\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void multiline()
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{
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const char filedata[] = "#define str \"abc\" \\ \n"
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" \"def\" \\ \n"
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" \"ghi\" \n";
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std::map<std::string, std::string> expected;
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expected[""] = "#define str \"abc\" \"def\" \"ghi\"\n\n\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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std::map<std::string, std::string> actual;
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Preprocessor preprocessor;
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preprocessor.preprocess(istr, actual);
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// Compare results..
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ASSERT_EQUALS(true, cmpmaps(actual, expected));
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}
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void if_defined()
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{
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const char filedata[] = "#if defined(AAA)\n"
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"#endif\n";
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// Expected result..
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std::string expected("#ifdef AAA\n#endif\n");
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// Compare result..
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ASSERT_EQUALS(expected, Preprocessor::replaceIfDefined(filedata));
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}
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void macro_simple1()
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{
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const char filedata[] = "#define AAA(aa) f(aa)\n"
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"AAA(5);\n";
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ASSERT_EQUALS("\nf(5);\n", Preprocessor::expandMacros(filedata));
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}
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void macro_simple2()
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{
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const char filedata[] = "#define min(x,y) x<y?x:y\n"
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"min(a(),b());\n";
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ASSERT_EQUALS("\na()<b()?a():b();\n", Preprocessor::expandMacros(filedata));
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}
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void macro_mismatch()
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{
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const char filedata[] = "#define AAA(aa,bb) f(aa)\n"
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"AAA(5);\n";
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ASSERT_EQUALS("\nAAA(5);\n", Preprocessor::expandMacros(filedata));
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}
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void macro_multiline()
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{
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const char filedata[] = "#define sqr(aa) aa * \\\n"
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" aa\n"
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"sqr(5);\n";
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ASSERT_EQUALS("\n\n5*5;\n", Preprocessor::expandMacros(filedata));
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}
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};
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REGISTER_TEST(TestPreprocessor)
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