Added cppbitmask with tests, added travis CI build

.travis.yml

@@ -0,0 +1,35 @@
+language: cpp
+os: linux
+dist: focal
+sudo: false
+compiler:
+  - gcc
+
+addons:
+  apt:
+    update: true
+    packages:
+      - "ca-certificates"
+      - "libqt5core5a"
+      - "libqt5gui5"
+      - "libqt5network5"
+      - "libqt5multimedia5"
+      - "libqt5sql5"
+      - "libqt5sql5-mysql"
+      - "libqt5sql5-sqlite"
+      - "libqt5serialport5"
+      - "git-core"
+      - "g++"
+      - "make"
+      - "cmake"
+      - "qt5-default"
+      - "qtmultimedia5-dev"
+      - "qttools5-dev"
+      - "qttools5-dev-tools"
+      - "libqt5serialport5-dev"
+      - "libqt5charts5-dev"
+
+script:
+  - "qmake test/tstcpputils.pro"
+  - "make -j2"
+  - ./tstcpputils

CMakeLists.txt

@@ -1,5 +1,6 @@
 set(headers
     src/cleanuphelper.h
+    src/cppbitmask.h
     src/crc32builder.h
     src/cppflags.h
     src/cppmacros.h

cpputils_src.pri

@@ -1,5 +1,6 @@
 HEADERS += \
     $$PWD/src/cleanuphelper.h \
+    $$PWD/src/cppbitmask.h \
     $$PWD/src/cppflags.h \
     $$PWD/src/cppmacros.h \
     $$PWD/src/cppoverloadutils.h \

src/cppbitmask.h

@@ -0,0 +1,49 @@
+#pragma once
+
+// system includes
+#include <cstdint>
+#include <stdexcept>
+
+namespace cpputils {
+template<typename T>
+class basic_bit_pattern
+{
+    T expected{};
+    T mask{};
+
+public:
+    template<std::size_t Size>
+    explicit constexpr basic_bit_pattern(const char (&input)[Size])
+    {
+        T cur_bit = (1 << (Size - 2));
+        for (const char val : input)
+        {
+            switch (val)
+            {
+            case 0:
+                return;
+            case '1':
+                expected |= cur_bit;
+            [[fallthrough]];
+            case '0':
+                mask |= cur_bit;
+                break;
+            case 'x':
+            case 'X':
+                break;
+            default:
+                throw std::logic_error{"Unknown characters in bit pattern input"};
+            }
+
+            cur_bit >>= 1;
+        }
+    }
+
+    constexpr friend bool operator==(const T value, const basic_bit_pattern &pattern)
+    {
+        return (value & pattern.mask) == pattern.expected;
+    }
+};
+
+using bit_pattern = basic_bit_pattern<std::uint32_t>;
+} // namespace cpputils

test/.gitignore

@@ -0,0 +1 @@
+*.user*

test/tst_cppbitmask.cpp

@@ -0,0 +1,29 @@
+#include <QtTest>
+#include <QDebug>
+#include <QByteArray>
+
+#include <chrono>
+#include <string>
+
+#include "cpputilstestutils.h"
+#include "cppbitmask.h"
+
+class TstCppBitmask : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void test_simple()
+    {
+        constexpr cpputils::bit_pattern pattern{"11XXX10"};
+        QVERIFY(0b1101010 == pattern);
+        QVERIFY(0b1110110 == pattern);
+        QVERIFY(!(0b1100000 == pattern));
+        QVERIFY(!(0b1000010 == pattern));
+    }
+};
+
+QTEST_APPLESS_MAIN(TstCppBitmask)
+
+#include "tst_cppbitmask.moc"
+

test/tstcpputils.pro

@@ -0,0 +1,18 @@
+TEMPLATE = app
+
+QT += core testlib
+QT -= gui widgets
+
+CONFIG += c++17 qt console warn_on depend_includepath testcase
+CONFIG -= app_bundle
+
+SOURCES += tst_cppbitmask.cpp
+
+CPPUTILS_DIR = $$PWD/..
+
+include($$CPPUTILS_DIR/cpputils.pri)
+include($$CPPUTILS_DIR/cpputils_src.pri)
+include($$CPPUTILS_DIR/test/cpputilstestutils.pri)
+include($$CPPUTILS_DIR/test/cpputilstestutils_src.pri)
+
+QMAKE_CXXFLAGS += -Wno-missing-field-initializers