Adding example, better Val combs, and cleanup

examples/CMakeLists.txt

@@ -130,7 +130,7 @@ add_cli_exe(enum enum.cpp)
 add_test(NAME enum_pass COMMAND enum -l 1)
 add_test(NAME enum_fail COMMAND enum -l 4)
 set_property(TEST enum_fail PROPERTY PASS_REGULAR_EXPRESSION
-    "--level: 4 not in {0,1,2}")
+    "--level: 4 not in {High,Medium,Low} | 4 not in {0,1,2}")
 
 add_cli_exe(modhelp modhelp.cpp)
 add_test(NAME modhelp COMMAND modhelp -a test -h)

examples/enum.cpp

@@ -1,4 +1,5 @@
 #include <CLI/CLI.hpp>
+#include <map>
 #include <sstream>
 
 enum class Level : int { High, Medium, Low };
@@ -15,12 +16,17 @@ std::ostream &operator<<(std::ostream &in, const Level &level) { return in << st
 int main(int argc, char **argv) {
     CLI::App app;
 
+    std::map<Level, std::string> map = {{Level::High, "High"}, {Level::Medium, "Medium"}, {Level::Low, "Low"}};
+
     Level level;
+
     app.add_option("-l,--level", level, "Level settings")
-        ->check(CLI::IsMember({Level::High, Level::Medium, Level::Low}))
-        ->type_name("enum/Level in {High=0, Medium=1, Low=2}");
+        ->required()
+        ->check(CLI::IsMember(map, CLI::ignore_case) | CLI::IsMember({Level::High, Level::Medium, Level::Low}));
 
     CLI11_PARSE(app, argc, argv);
 
+    std::cout << "Enum received: " << level << std::endl;
+
     return 0;
 }

include/CLI/Validators.hpp

@@ -57,18 +57,20 @@ class Validator {
         return func(value);
     };
 
-    /// Combining validators is a new validator
+    /// Combining validators is a new validator. Type comes from left validator if function, otherwise only set if the
+    /// same.
     Validator operator&(const Validator &other) const {
         Validator newval;
         newval.tname = (tname == other.tname ? tname : "");
+        newval.tname_function = tname_function;
 
         // Give references (will make a copy in lambda function)
         const std::function<std::string(std::string & filename)> &f1 = func;
         const std::function<std::string(std::string & filename)> &f2 = other.func;
 
-        newval.func = [f1, f2](std::string &filename) {
-            std::string s1 = f1(filename);
-            std::string s2 = f2(filename);
+        newval.func = [f1, f2](std::string &input) {
+            std::string s1 = f1(input);
+            std::string s2 = f2(input);
             if(!s1.empty() && !s2.empty())
                 return s1 + " & " + s2;
             else
@@ -77,22 +79,24 @@ class Validator {
         return newval;
     }
 
-    /// Combining validators is a new validator
+    /// Combining validators is a new validator. Type comes from left validator if function, otherwise only set if the
+    /// same.
     Validator operator|(const Validator &other) const {
         Validator newval;
         newval.tname = (tname == other.tname ? tname : "");
+        newval.tname_function = tname_function;
 
         // Give references (will make a copy in lambda function)
-        const std::function<std::string(std::string & filename)> &f1 = func;
-        const std::function<std::string(std::string & filename)> &f2 = other.func;
+        const std::function<std::string(std::string &)> &f1 = func;
+        const std::function<std::string(std::string &)> &f2 = other.func;
 
-        newval.func = [f1, f2](std::string &filename) {
-            std::string s1 = f1(filename);
-            std::string s2 = f2(filename);
+        newval.func = [f1, f2](std::string &input) {
+            std::string s1 = f1(input);
+            std::string s2 = f2(input);
             if(s1.empty() || s2.empty())
                 return std::string();
             else
-                return s1 + " & " + s2;
+                return s1 + " | " + s2;
         };
         return newval;
     }
@@ -308,7 +312,7 @@ class IsMember : public Validator {
         // This is the type name for help, it will take the current version of the set contents
         tname_function = [set]() {
             std::stringstream out;
-            out << detail::type_name<item_t>() << " in {";
+            out << "{";
             int i = 0; // I don't like counters like this
             for(const auto &v : detail::smart_deref(set))
                 out << (i++ == 0 ? "" : ",") << detail::key_map_adaptor<element_t>::second(v);

tests/SetTest.cpp

@@ -25,6 +25,50 @@ TEST_F(TApp, SimpleMaps) {
     EXPECT_EQ(value, 1);
 }
 
+enum SimpleEnum { SE_one = 1, SE_two = 2 };
+
+std::istream &operator>>(std::istream &in, SimpleEnum &e) {
+    int i;
+    in >> i;
+    e = static_cast<SimpleEnum>(i);
+    return in;
+}
+
+TEST_F(TApp, EnumMap) {
+    SimpleEnum value;
+    std::map<SimpleEnum, std::string> map = {{SE_one, "one"}, {SE_two, "two"}};
+    auto opt = app.add_option("-s,--set", value)->check(CLI::IsMember(map));
+    args = {"-s", "one"};
+    run();
+    EXPECT_EQ(1u, app.count("-s"));
+    EXPECT_EQ(1u, app.count("--set"));
+    EXPECT_EQ(1u, opt->count());
+    EXPECT_EQ(value, SE_one);
+}
+
+enum class SimpleEnumC { one = 1, two = 2 };
+
+std::istream &operator>>(std::istream &in, SimpleEnumC &e) {
+    int i;
+    in >> i;
+    e = static_cast<SimpleEnumC>(i);
+    return in;
+}
+
+std::ostream &operator<<(std::ostream &in, const SimpleEnumC &e) { return in << static_cast<int>(e); }
+
+TEST_F(TApp, EnumCMap) {
+    SimpleEnumC value;
+    std::map<SimpleEnumC, std::string> map = {{SimpleEnumC::one, "one"}, {SimpleEnumC::two, "two"}};
+    auto opt = app.add_option("-s,--set", value)->check(CLI::IsMember(map));
+    args = {"-s", "one"};
+    run();
+    EXPECT_EQ(1u, app.count("-s"));
+    EXPECT_EQ(1u, app.count("--set"));
+    EXPECT_EQ(1u, opt->count());
+    EXPECT_EQ(value, SimpleEnumC::one);
+}
+
 TEST_F(TApp, SimpleSets) {
     std::string value;
     auto opt = app.add_option("-s,--set", value)->check(CLI::IsMember{std::set<std::string>({"one", "two", "three"})});