699 lines
21 KiB
C++
699 lines
21 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
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* Leandro Penz, Kimmo Varis
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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 "../src/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(test6);
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// Handling include guards (don't create extra configuration for it)
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TEST_CASE(includeguard);
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TEST_CASE(newlines);
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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(if_cond1);
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TEST_CASE(multiline1);
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TEST_CASE(multiline2);
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TEST_CASE(multiline3);
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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_simple3);
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TEST_CASE(macro_simple4);
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TEST_CASE(macro_simple5);
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TEST_CASE(macro_simple6);
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TEST_CASE(macro_simple7);
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TEST_CASE(macro_simple8);
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TEST_CASE(macro_mismatch);
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TEST_CASE(string1);
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TEST_CASE(string2);
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TEST_CASE(preprocessor_undef);
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TEST_CASE(defdef); // Defined multiple times
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TEST_CASE(preprocessor_doublesharp);
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TEST_CASE(preprocessor_include_in_str);
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// TODO TEST_CASE(fmt1);
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// TODO TEST_CASE(fmt2);
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TEST_CASE(multi_character_character);
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TEST_CASE(stringify);
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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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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, "file.c");
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// Compare results..
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ASSERT_EQUALS(expected[""], actual[""]);
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ASSERT_EQUALS(expected["__cplusplus"], actual["__cplusplus"]);
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ASSERT_EQUALS(2, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\nqwerty\n\n", actual[""]);
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ASSERT_EQUALS("\nabcdef\n\n\n\n", actual["WIN32"]);
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ASSERT_EQUALS(2, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\" # ifdef WIN32\"\n\n\n\n", actual[""]);
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ASSERT_EQUALS("\n\n\nqwerty\n\n", actual["WIN32"]);
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ASSERT_EQUALS(2, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\n\n\n\n\n", actual[""]);
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ASSERT_EQUALS("\na\n\n\n\nc\n\n", actual["ABC"]);
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ASSERT_EQUALS("\na\n\nb\n\nc\n\n", actual["ABC;DEF"]);
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ASSERT_EQUALS(3, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\n\n\n\n", actual[""]);
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ASSERT_EQUALS("\nA\n\n\nA\n\n", actual["ABC"]);
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ASSERT_EQUALS(2, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\nB\n\n\n\n\n", actual[""]);
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ASSERT_EQUALS("\nA\n\n\n\n\n\n\n", actual["ABC"]);
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ASSERT_EQUALS("\n\n\nB\n\nC\n\n\n", actual["DEF"]);
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ASSERT_EQUALS(3, actual.size());
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}
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void test6()
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{
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const char filedata[] = "#if(AAA)\n"
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"#if(AAA)\n";
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std::istringstream istr(filedata);
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const std::string actual(Preprocessor::read(istr));
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// Compare results..
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ASSERT_EQUALS("#if (AAA)\n#if (AAA)\n", actual);
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}
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void includeguard()
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{
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// Handling include guards..
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const char filedata[] = "#file \"abc.h\"\n"
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"#ifndef abcH\n"
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"#define abcH\n"
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"#endif\n"
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"#endfile\n"
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"#ifdef ABC\n"
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"#endif";
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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, "file.c");
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// Expected configurations: "" and "ABC"
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ASSERT_EQUALS(2, actual.size());
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}
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void newlines()
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{
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const char filedata[] = "\r\r\n\n";
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// Preprocess
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std::istringstream istr(filedata);
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Preprocessor preprocessor;
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ASSERT_EQUALS("\n\n\n", preprocessor.read(istr));
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\n\n", actual[""]);
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ASSERT_EQUALS(1, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\n\n", actual[""]);
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ASSERT_EQUALS(1, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\nABC\n\n", actual[""]);
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ASSERT_EQUALS(1, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\n\n\n", actual[""]);
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ASSERT_EQUALS("\nABC\n\n\n\n", actual["DEF1"]);
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ASSERT_EQUALS("\n\n\nDEF\n\n", actual["DEF2"]);
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ASSERT_EQUALS(3, actual.size());
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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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// 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, "file.c");
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// Compare results..
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ASSERT_EQUALS("\n\n\nB\n\n", actual[""]);
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ASSERT_EQUALS("\nA\n\n\n\n", actual["LIBVER>100"]);
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ASSERT_EQUALS(2, actual.size());
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}
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void multiline1()
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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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"abcdef = str;\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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Preprocessor preprocessor;
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ASSERT_EQUALS("#define str \"abc\" \"def\" \n\nabcdef = str;\n", preprocessor.read(istr));
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}
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void multiline2()
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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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// Preprocess => actual result..
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std::istringstream istr(filedata);
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Preprocessor preprocessor;
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ASSERT_EQUALS("#define sqr(aa) aa * aa\n\nsqr(5);\n", preprocessor.read(istr));
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}
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void multiline3()
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{
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const char filedata[] = "const char *str = \"abc\\\n"
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"def\\\n"
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"ghi\"\n";
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// Preprocess => actual result..
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std::istringstream istr(filedata);
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Preprocessor preprocessor;
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ASSERT_EQUALS("const char *str = \"abcdefghi\"\n\n\n", preprocessor.read(istr));
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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_simple3()
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{
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const char filedata[] = "#define A 4\n"
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"A AA\n";
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ASSERT_EQUALS("\n4 AA\n", Preprocessor::expandMacros(filedata));
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}
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void macro_simple4()
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{
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const char filedata[] = "#define TEMP_1 if( temp > 0 ) return 1;\n"
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"TEMP_1\n";
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ASSERT_EQUALS("\nif( temp > 0 ) return 1;\n", Preprocessor::expandMacros(filedata));
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}
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void macro_simple5()
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{
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const char filedata[] = "#define ABC if( temp > 0 ) return 1;\n"
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"\n"
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"void foo()\n"
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"{\n"
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" int temp = 0;\n"
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" ABC\n"
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"}\n";
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ASSERT_EQUALS("\n\nvoid foo()\n{\n int temp = 0;\n if( temp > 0 ) return 1;\n}\n", Preprocessor::expandMacros(filedata));
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}
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void macro_simple6()
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{
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const char filedata[] = "#define ABC (a+b+c)\n"
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"ABC";
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ASSERT_EQUALS("\n(a+b+c)", Preprocessor::expandMacros(filedata));
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}
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void macro_simple7()
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{
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const char filedata[] = "#define ABC(str) str\n"
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"ABC(\"(\")";
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ASSERT_EQUALS("\n\"(\"", Preprocessor::expandMacros(filedata));
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}
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void macro_simple8()
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{
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const char filedata[] = "#define ABC 123\n"
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"#define ABCD 1234\n"
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"ABC ABCD";
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ASSERT_EQUALS("\n\n123 1234", 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 string1()
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{
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const char filedata[] = "int main()"
|
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"{"
|
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" const char *a = \"#define A\n\";"
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"}";
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|
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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, "file.c");
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|
|
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// Compare results..
|
|
ASSERT_EQUALS(1, actual.size());
|
|
ASSERT_EQUALS("int main(){ const char *a = \"#define A\n\";}\n", actual[""]);
|
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}
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|
|
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void string2()
|
|
{
|
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const char filedata[] = "#define AAA 123\n"
|
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"str = \"AAA\"";
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|
|
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// Compare results..
|
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ASSERT_EQUALS("\nstr = \"AAA\"", Preprocessor::expandMacros(filedata));
|
|
}
|
|
|
|
|
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void preprocessor_undef()
|
|
{
|
|
const char filedata[] = "#define AAA int a;\n"
|
|
"#undef AAA\n"
|
|
"#define AAA char b=0;\n"
|
|
"AAA\n";
|
|
|
|
// Compare results..
|
|
ASSERT_EQUALS("\n\n\nchar b=0;\n", Preprocessor::expandMacros(filedata));
|
|
}
|
|
|
|
void defdef()
|
|
{
|
|
const char filedata[] = "#define AAA 123\n"
|
|
"#define AAA 456\n"
|
|
"#define AAA 789\n"
|
|
"AAA\n";
|
|
|
|
// Compare results..
|
|
ASSERT_EQUALS("\n\n\n789\n", Preprocessor::expandMacros(filedata));
|
|
}
|
|
|
|
void preprocessor_doublesharp()
|
|
{
|
|
const char filedata[] = "#define TEST(var,val) var = val\n"
|
|
"TEST(foo,20);\n";
|
|
|
|
// Compare results..
|
|
ASSERT_EQUALS("\nfoo=20;\n", Preprocessor::expandMacros(filedata));
|
|
|
|
const char filedata2[] = "#define TEST(var,val) var##_##val = val\n"
|
|
"TEST(foo,20);\n";
|
|
|
|
// Compare results..
|
|
ASSERT_EQUALS("\nfoo_20=20;\n", Preprocessor::expandMacros(filedata2));
|
|
}
|
|
|
|
|
|
|
|
void preprocessor_include_in_str()
|
|
{
|
|
const char filedata[] = "int main()\n"
|
|
"{\n"
|
|
"const char *a = \"#include <string>\n\";\n"
|
|
"return 0;\n"
|
|
"}\n";
|
|
|
|
// Preprocess => actual result..
|
|
std::istringstream istr(filedata);
|
|
std::map<std::string, std::string> actual;
|
|
Preprocessor preprocessor;
|
|
preprocessor.preprocess(istr, actual, "file.c");
|
|
|
|
// Compare results..
|
|
ASSERT_EQUALS(1, actual.size());
|
|
ASSERT_EQUALS("int main()\n{\nconst char *a = \"#include <string>\n\";\nreturn 0;\n}\n", actual[""]);
|
|
}
|
|
|
|
|
|
|
|
|
|
void fmt1()
|
|
{
|
|
const char filedata[] = "#define DBG(fmt...) printf(fmt)\n"
|
|
"DBG(\"[0x%lx-0x%lx)\", pstart, pend);";
|
|
|
|
// Preprocess..
|
|
std::string actual = Preprocessor::expandMacros(filedata);
|
|
|
|
ASSERT_EQUALS("\nprintf(\"[0x%lx-0x%lx)\", pstart, pend);", actual);
|
|
}
|
|
|
|
void fmt2()
|
|
{
|
|
const char filedata[] = "#define DBG(fmt, args...) printf(fmt, ## args)\n"
|
|
"DBG(\"hello\");";
|
|
|
|
// Preprocess..
|
|
std::string actual = Preprocessor::expandMacros(filedata);
|
|
|
|
ASSERT_EQUALS("\nprintf(\"hello\");", actual);
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void multi_character_character()
|
|
{
|
|
const char filedata[] = "#define FOO 'ABCD'\n"
|
|
"int main()\n"
|
|
"{\n"
|
|
"if( FOO == 0 );\n"
|
|
"return 0;\n"
|
|
"}\n";
|
|
|
|
// Preprocess => actual result..
|
|
std::istringstream istr(filedata);
|
|
std::map<std::string, std::string> actual;
|
|
Preprocessor preprocessor;
|
|
preprocessor.preprocess(istr, actual, "file.c");
|
|
|
|
// Compare results..
|
|
ASSERT_EQUALS(1, actual.size());
|
|
ASSERT_EQUALS("\nint main()\n{\nif( 'ABCD' == 0 );\nreturn 0;\n}\n", actual[""]);
|
|
}
|
|
|
|
|
|
void stringify()
|
|
{
|
|
const char filedata[] = "#define STRINGIFY(x) #x\n"
|
|
"STRINGIFY(abc)";
|
|
|
|
// expand macros..
|
|
std::string actual = Preprocessor::expandMacros(filedata);
|
|
|
|
ASSERT_EQUALS("\n\"abc\"", actual);
|
|
}
|
|
|
|
};
|
|
|
|
REGISTER_TEST(TestPreprocessor)
|