add is_false() helper function and logical operator overloads to ArgumentValue and ArgumentValueList

Author: jemarq04

argparse.cpp

@@ -62,6 +62,7 @@ ArgumentValue  ArgumentValue::operator--(int){
 // Accessors {{{2
 bool ArgumentValue::is_none() const{return *this == NONE;}
 bool ArgumentValue::is_true() const{return *this == TRUE;}
+bool ArgumentValue::is_false() const{return *this != TRUE;}
 
 // === ARGUMENT VALUE LIST === {{{1
 //
@@ -131,6 +132,12 @@ ArgumentValueList  ArgumentValueList::operator--(int){
 	return temp;
 }	
 
+// Stream Operators {{{2
+std::ostream& operator<<(std::ostream& os, const ArgumentValueList& arglist){
+	os << arglist.str();
+	return os;
+}
+
 // Modifiers {{{2
 void ArgumentValueList::str(const std::string& val){at(0) = val;}
 
@@ -139,6 +146,7 @@ std::string ArgumentValueList::str() const{return at(0);}
 const char* ArgumentValueList::c_str() const{return at(0).c_str();}
 bool ArgumentValueList::is_none() const{return at(0) == NONE;}
 bool ArgumentValueList::is_true() const{return at(0) == TRUE;}
+bool ArgumentValueList::is_false() const{return at(0) != TRUE;}
 std::vector<std::string> ArgumentValueList::vec() const{
 	std::vector<std::string> result;
 	for (auto& val : *this) result.push_back((std::string)val);

argparse.h

@@ -1,6 +1,6 @@
 #ifndef ARGPARSE_H
 #define ARGPARSE_H
-#define ARGPARSE_VERSION 2.2.5
+#define ARGPARSE_VERSION 2.2.6
 #include <iostream>
 #include <sstream>
 #include <fstream>
@@ -57,6 +57,19 @@ namespace argparse{
 		operator float() const;
 		operator double() const;
 		operator bool() const;
+
+		// Logical Operators
+		bool operator!() const{
+			return !(bool)*this;
+		}
+		template <typename T>
+		bool operator&&(const T& other) const{
+			return (bool)*this && other;
+		}
+		template <typename T>
+		bool operator||(const T& other) const{
+			return (bool)*this || other;
+		}
 
 		// Comparison Operators
 		template <typename T>
@@ -127,6 +140,7 @@ namespace argparse{
 		// Accessors
 		bool is_none() const;
 		bool is_true() const;
+		bool is_false() const;
 	};
 
 
@@ -162,6 +176,19 @@ namespace argparse{
 		operator bool() const;
 		operator std::string() const;
 
+		// Logical Operators
+		bool operator!() const{
+			return !(bool)at(0);
+		}
+		template <typename T>
+		bool operator&&(const T& other) const{
+			return (bool)at(0) && other;
+		}
+		template <typename T>
+		bool operator||(const T& other) const{
+			return (bool)at(0) || other;
+		}
+
 		// Comparison Operators
 		template <typename T>
 		bool operator==(const T& other) const{
@@ -243,12 +270,9 @@ namespace argparse{
 		const char* c_str() const;
 		bool is_none() const;
 		bool is_true() const;
+		bool is_false() const;
 		std::vector<std::string> vec() const;
 	};
-	std::ostream& operator<<(std::ostream& os, const ArgumentValueList& arglist){
-		os << arglist.str();
-		return os;
-	}
 	typedef std::map<std::string, ArgumentValueList> ArgumentMap;
 	std::string format_args(ArgumentMap args);
 	void print_args(ArgumentMap args, std::ostream& out=std::cout);