cleaned up includes based on `include-what-you-use` (#5021)

Makefile

@@ -670,7 +670,7 @@ cli/threadexecutor.o: cli/threadexecutor.cpp cli/cppcheckexecutor.h cli/executor
 test/fixture.o: test/fixture.cpp lib/check.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/suppressions.h test/fixture.h test/options.h test/redirect.h
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ test/fixture.cpp
 
-test/helpers.o: test/helpers.cpp externals/simplecpp/simplecpp.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/importproject.h lib/library.h lib/mathlib.h lib/path.h lib/platform.h lib/preprocessor.h lib/settings.h lib/standards.h lib/suppressions.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h test/helpers.h
+test/helpers.o: test/helpers.cpp externals/simplecpp/simplecpp.h lib/config.h lib/errortypes.h lib/mathlib.h lib/path.h lib/preprocessor.h lib/templatesimplifier.h lib/token.h lib/tokenize.h lib/tokenlist.h lib/utils.h lib/vfvalue.h test/helpers.h
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CXXFLAGS) -c -o $@ test/helpers.cpp
 
 test/main.o: test/main.cpp externals/simplecpp/simplecpp.h lib/check.h lib/color.h lib/config.h lib/errorlogger.h lib/errortypes.h lib/preprocessor.h lib/suppressions.h test/fixture.h test/options.h

cli/cmdlineparser.cpp

@@ -21,6 +21,7 @@
 #include "check.h"
 #include "config.h"
 #include "cppcheckexecutor.h"
+#include "errorlogger.h"
 #include "errortypes.h"
 #include "filelister.h"
 #include "importproject.h"

cli/executor.cpp

@@ -24,7 +24,6 @@
 #include "suppressions.h"
 
 #include <algorithm>
-#include <iostream>
 #include <sstream> // IWYU pragma: keep
 #include <utility>
 

cli/processexecutor.cpp

@@ -20,7 +20,6 @@
 
 #if !defined(WIN32) && !defined(__MINGW32__)
 
-#include "color.h"
 #include "config.h"
 #include "cppcheck.h"
 #include "cppcheckexecutor.h"
@@ -56,6 +55,8 @@
 #include <sys/prctl.h>
 #endif
 
+enum class Color;
+
 // NOLINTNEXTLINE(misc-unused-using-decls) - required for FD_ZERO
 using std::memset;
 

gui/newsuppressiondialog.cpp

@@ -24,7 +24,6 @@
 
 #include "ui_newsuppressiondialog.h"
 
-#include <functional>
 #include <string>
 
 #include <QComboBox>

lib/checkio.cpp

@@ -26,6 +26,7 @@
 #include "symboldatabase.h"
 #include "token.h"
 #include "tokenize.h"
+#include "utils.h"
 #include "vfvalue.h"
 
 #include <algorithm>

lib/checkunusedfunctions.cpp

@@ -29,6 +29,7 @@
 #include "token.h"
 #include "tokenize.h"
 #include "tokenlist.h"
+#include "utils.h"
 
 #include <algorithm>
 #include <cctype>

lib/errorlogger.cpp

@@ -24,6 +24,7 @@
 #include "path.h"
 #include "token.h"
 #include "tokenlist.h"
+#include "utils.h"
 
 #include <algorithm>
 #include <array>
@@ -32,9 +33,9 @@
 #include <cstdlib>
 #include <cstring>
 #include <iomanip>
-#include <limits>
 #include <sstream> // IWYU pragma: keep
 #include <string>
+#include <unordered_map>
 #include <utility>
 
 #include <tinyxml2.h>

test/helpers.cpp

@@ -22,8 +22,10 @@
 #include "preprocessor.h"
 
 #include <cstdio>
+#include <fstream>
 #include <stdexcept>
 #include <utility>
+#include <vector>
 
 #ifdef _WIN32
 #include <windows.h>
@@ -34,6 +36,8 @@
 
 #include <simplecpp.h>
 
+class Suppressions;
+
 ScopedFile::ScopedFile(std::string name, const std::string &content, std::string path)
     : mName(std::move(name))
     , mPath(Path::toNativeSeparators(std::move(path)))

test/helpers.h

@@ -19,20 +19,16 @@
 #ifndef helpersH
 #define helpersH
 
-#include "color.h"
-#include "errorlogger.h"
-#include "settings.h"
-#include "suppressions.h"
 #include "tokenize.h"
 #include "tokenlist.h"
 
-#include <fstream> // IWYU pragma: keep
-#include <list>
 #include <sstream> // IWYU pragma: keep
 #include <string>
 
 class Token;
-class Processor;
+class Preprocessor;
+class Settings;
+class Suppressions;
 
 class givenACodeSampleToTokenize {
 private:

test/testcmdlineparser.cpp

@@ -17,7 +17,7 @@
  */
 
 #include "cmdlineparser.h"
-#include "color.h"
+#include "config.h"
 #include "cppcheckexecutor.h"
 #include "errortypes.h"
 #include "platform.h"

test/testcppcheck.cpp

@@ -23,7 +23,6 @@
 #include "fixture.h"
 
 #include <algorithm>
-#include <functional>
 #include <list>
 #include <string>
 

test/testerrorlogger.cpp

@@ -16,7 +16,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "color.h"
 #include "config.h"
 #include "cppcheck.h"
 #include "errorlogger.h"

test/testsimplifyusing.cpp

@@ -26,8 +26,11 @@
 
 #include <simplecpp.h>
 
+#include <map>
 #include <sstream> // IWYU pragma: keep
 #include <string>
+#include <utility>
+#include <vector>
 
 
 class TestSimplifyUsing : public TestFixture {

test/testsuppressions.cpp

@@ -39,7 +39,6 @@
 #include <string>
 #include <utility>
 #include <vector>
-#include <numeric>
 
 class TestSuppressions : public TestFixture {
 public:

test/testutils.cpp

@@ -21,6 +21,11 @@
 #include "settings.h"
 #include "utils.h"
 
+#include <cstddef>
+#include <cstdint>
+#include <limits>
+#include <string>
+
 const Settings givenACodeSampleToTokenize::settings;
 
 class TestUtils : public TestFixture {