move static functions out of Value, add test driver to ensure linking works properly

Makefile

@@ -3,8 +3,8 @@ JANSSON_LIBS := $(shell pkg-config --libs jansson)
 
 all: test
 
-test-bin: test.cpp jansson.hpp jansson-impl.hpp Makefile
+test-bin: driver.cpp test.cpp jansson.hpp jansson-impl.hpp Makefile
-	$(CXX) -o $@ -g -O0 -Wall $(JANSSON_CFLAGS) $< $(JANSSON_LIBS)
+	$(CXX) -o $@ -g -O0 -Wall $(JANSSON_CFLAGS) driver.cpp test.cpp $(JANSSON_LIBS)
 
 test: test-bin
 	./test-bin

driver.cpp

@@ -0,0 +1,7 @@
+#include "jansson.hpp"
+
+extern int json_cpp_tests();
+
+int main() {
+	return json_cpp_tests();
+}

jansson-impl.hpp

@@ -300,7 +300,7 @@ namespace json {
 		}
 
 		// take ownership of a json_t (does not increase reference count)
-		Basic Basic::_take(json_t* json) {
+		Basic Basic::take_ownership(json_t* json) {
 			Basic v;
 			v._value = json;
 			return v;
@@ -328,76 +328,6 @@ namespace json {
 		}
 
 	} // namespace json::_private
-
-	// construct Value from input
-	Value Value::from(const char* value) {
-		return Value::_take(json_string(value));
-	}
-
-	Value Value::from(const std::string& value) {
-		return Value::from(value.c_str());
-	}
-
-	Value Value::from(bool value) {
-		return Value::_take(value ? json_true() : json_false());
-	}
-
-	Value Value::from(signed int value) {
-		return Value::_take(json_integer(value));
-	}
-
-	Value Value::from(unsigned int value) {
-		return Value::_take(json_integer(value));
-	}
-
-	Value Value::from(signed short value) {
-		return Value::_take(json_integer(value));
-	}
-
-	Value Value::from(unsigned short value) {
-		return Value::_take(json_integer(value));
-	}
-
-	Value Value::from(signed long value) {
-		return Value::_take(json_integer(value));
-	}
-
-	Value Value::from(unsigned long value) {
-		return Value::_take(json_integer(value));
-	}
-
-	Value Value::from(float value) {
-		return Value::_take(json_real(value));
-	}
-
-	Value Value::from(double value) {
-		return Value::_take(json_real(value));
-	}
-
-	// create a new empty object
-	Value Value::object() {
-		return Value::_take(json_object());
-	}
-
-	// create a new empty array
-	Value Value::array() {
-		return Value::_take(json_array());
-	}
-
-	// create a new null value
-	Value Value::null() {
-		return Value::_take(json_null());
-	}
-
-	// load a file as a JSON value
-	Value Value::load_file(const char* path, json_error_t* error) {
-		return Value::_take(json_load_file(path, error));
-	}
-
-	// load a string as a JSON value
-	Value Value::load_string(const char* string, json_error_t* error) {
-		return Value::_take(json_loads(string, error));
-	}
 	
 	// construct a new iterator for a given object
 	Iterator::Iterator(const Value& value) : _object(value), _iter(0) {
@@ -445,6 +375,76 @@ namespace json {
 		return value();
 	}
 
+	// construct Value from input
+	Value from(const char* value) {
+		return Value::take_ownership(json_string(value));
+	}
+
+	Value from(const std::string& value) {
+		return from(value.c_str());
+	}
+
+	Value from(bool value) {
+		return Value::take_ownership(value ? json_true() : json_false());
+	}
+
+	Value from(signed int value) {
+		return Value::take_ownership(json_integer(value));
+	}
+
+	Value from(unsigned int value) {
+		return Value::take_ownership(json_integer(value));
+	}
+
+	Value from(signed short value) {
+		return Value::take_ownership(json_integer(value));
+	}
+
+	Value from(unsigned short value) {
+		return Value::take_ownership(json_integer(value));
+	}
+
+	Value from(signed long value) {
+		return Value::take_ownership(json_integer(value));
+	}
+
+	Value from(unsigned long value) {
+		return Value::take_ownership(json_integer(value));
+	}
+
+	Value from(float value) {
+		return Value::take_ownership(json_real(value));
+	}
+
+	Value from(double value) {
+		return Value::take_ownership(json_real(value));
+	}
+
+	// create a new empty object
+	Value object() {
+		return Value::take_ownership(json_object());
+	}
+
+	// create a new empty array
+	Value array() {
+		return Value::take_ownership(json_array());
+	}
+
+	// create a new null value
+	Value null() {
+		return Value::take_ownership(json_null());
+	}
+
+	// load a file as a JSON value
+	Value load_file(const char* path, json_error_t* error) {
+		return Value::take_ownership(json_load_file(path, error));
+	}
+
+	// load a string as a JSON value
+	Value load_string(const char* string, json_error_t* error) {
+		return Value::take_ownership(json_loads(string, error));
+	}
+
 } // namespace json
 
 // stream JSON value out
@@ -466,6 +466,6 @@ std::istream& operator>>(std::istream& is, json::Value& value) {
 	while (is)
 		tmp << static_cast<char>(is.get());
 	// parse the buffered string
-	value = json::Value::load_string(tmp.str().c_str());
+	value = json::load_string(tmp.str().c_str());
 	return is;
 }

jansson.hpp

@@ -150,9 +150,8 @@ namespace json {
 			// get the underlying json_t
 			inline json_t* as_json() const;
 
-		protected:
 			// take ownership of a json_t (does not increase reference count)
-			static inline Basic _take(json_t* json);
+			static inline Basic take_ownership(json_t* json);
 
 		private:
 			// internal value pointer
@@ -218,34 +217,6 @@ namespace json {
 
 		// create reference to value
 		explicit Value(json_t* json) : _private::ValueBase<_private::Basic>(json) {}
-
-		// construct Value from input
-		static inline Value from(const char* value);
-		static inline Value from(const std::string& value);
-		static inline Value from(bool value);
-		static inline Value from(signed int value);
-		static inline Value from(unsigned int value);
-		static inline Value from(signed short value);
-		static inline Value from(unsigned short value);
-		static inline Value from(signed long value);
-		static inline Value from(unsigned long value);
-		static inline Value from(float value);
-		static inline Value from(double value);
-
-		// create a new empty object
-		static inline Value object();
-
-		// create a new empty array
-		static inline Value array();
-
-		// create a new null value
-		static inline Value null();
-
-		// load a file as a JSON value
-		static inline Value load_file(const char* path, json_error_t* error = 0);
-
-		// load a string as a JSON value
-		static inline Value load_string(const char* string, json_error_t* error = 0);
 	};
 
 	// iterators over a JSON object
@@ -290,6 +261,34 @@ namespace json {
 		void* _iter;
 	};
 
+	// construct Value from input
+	inline Value from(const char* value);
+	inline Value from(const std::string& value);
+	inline Value from(bool value);
+	inline Value from(signed int value);
+	inline Value from(unsigned int value);
+	inline Value from(signed short value);
+	inline Value from(unsigned short value);
+	inline Value from(signed long value);
+	inline Value from(unsigned long value);
+	inline Value from(float value);
+	inline Value from(double value);
+
+	// create a new empty object
+	inline Value object();
+
+	// create a new empty array
+	inline Value array();
+
+	// create a new null value
+	inline Value null();
+
+	// load a file as a JSON value
+	inline Value load_file(const char* path, json_error_t* error = 0);
+
+	// load a string as a JSON value
+	inline Value load_string(const char* string, json_error_t* error = 0);
+
 } // namespace json 
 
 // stream JSON value out -- inefficient and not recommended for production use

test.cpp

@@ -4,8 +4,6 @@
 
 #include "jansson.hpp"
 
-using namespace std;
-
 #define ASSERT_OP(lhs, rhs, op, m) \
 	do { \
 		if(!((lhs) op (rhs))) { \
@@ -21,11 +19,11 @@ using namespace std;
 #define ASSERT_TRUE(p, m) ASSERT_OP(p, true, ==, m)
 #define ASSERT_FALSE(p, m) ASSERT_OP(p, true, !=, m)
 
-int main() {
+int json_cpp_tests() {
-	json::Value e1(json::Value::load_file("test.json"));
+	json::Value e1(json::load_file("test.json"));
 	json::Value e2(e1);
 	json::Value e3;
-	json::Value e4(json::Value::load_string("{\"foo\": true, \"bar\": \"test\"}"));
+	json::Value e4(json::load_string("{\"foo\": true, \"bar\": \"test\"}"));
 
 	ASSERT_TRUE(e1.is_object(), "e1 is not an object");
 	ASSERT_TRUE(e2.is_object(), "e2 is not an object");
@@ -51,46 +49,46 @@ int main() {
 	i.next();
 	ASSERT_FALSE(i.valid(), "iterator has more values than expected");
 
-	json::Value e5(json::Value::from(12.34));
+	json::Value e5(json::from(12.34));
 	ASSERT_TRUE(e5.is_number(), "e5 is not a number after assignment");
 	ASSERT_EQ(e5.as_real(), 12.34, "e5 has incorrect value after assignment");
 
-	json::Value e6(json::Value::from(true));
+	json::Value e6(json::from(true));
 	ASSERT_TRUE(e6.is_boolean(), "e6 is not a boolean after assignment");
 	ASSERT_EQ(e6.as_boolean(), true, "e6 has incorrect value after assignment");
 
-	json::Value e7(json::Value::from("foobar"));
+	json::Value e7(json::from("foobar"));
 	ASSERT_TRUE(e7.is_string(), "e7 is not a string after assignment");
 	ASSERT_EQ(e7.as_string(), "foobar", "e7 has incorrect value after assignment");
 
-	json::Value e8(json::Value::object());
+	json::Value e8(json::object());
 	ASSERT_TRUE(e8.is_object(), "e8 is not an object after assignment");
 
-	json::Value e9(json::Value::null());
+	json::Value e9(json::null());
 	ASSERT_TRUE(e9.is_null(), "e9 is not null after assignment");
 
-	json::Value e10(json::Value::array());
+	json::Value e10(json::array());
 	ASSERT_TRUE(e10.is_array(), "e10 is not an array after index assignment");
 
-	e10.set_at(0, json::Value::from("foobar"));
+	e10.set_at(0, json::from("foobar"));
 	ASSERT_EQ(e10.size(), 1, "e10 has incorrect number of elements after assignment");
 	ASSERT_EQ(e10[0].as_string(), "foobar", "e10[0] has incorrect value after assignment");
 
-	e10.set_at(1, json::Value::from("foobar"));
+	e10.set_at(1, json::from("foobar"));
 	ASSERT_TRUE(e10.is_array(), "e10 is not an array after index assignment");
 	ASSERT_EQ(e10.size(), 2, "e10 has incorrect number of elements after assignment");
 	ASSERT_EQ(e10[1].as_string(), "foobar", "e10[0] has incorrect value after assignment");
 
-	e10.set_at(0, json::Value::from("barfoo"));
+	e10.set_at(0, json::from("barfoo"));
 	ASSERT_TRUE(e10.is_array(), "e10 is not an array after index assignment");
 	ASSERT_EQ(e10.size(), 2, "e10 has incorrect number of elements after assignment");
 	ASSERT_EQ(e10[0].as_string(), "barfoo", "e10[0] has incorrect value after assignment");
 
-	e10.set_at(100, json::Value::null());
+	e10.set_at(100, json::null());
 	ASSERT_TRUE(e10.is_array(), "e10 is not an array after index assignment");
 	ASSERT_EQ(e10.size(), 2, "e10 has incorrect number of elements after assignment");
 
-	e10.insert_at(1, json::Value::from("new"));
+	e10.insert_at(1, json::from("new"));
 	ASSERT_EQ(e10.size(), 3, "e10 has incorrect size after insert");
 	ASSERT_EQ(e10[1].as_string(), "new", "e10[1] has incorrect value after insert");
 	ASSERT_EQ(e10[2].as_string(), "foobar", "e10[2] has incorrect value after insert");
@@ -102,19 +100,19 @@ int main() {
 	e10.clear();
 	ASSERT_EQ(e10.size(), 0, "e10 has incorrect number of elements after clear");
 
-	json::Value e11(json::Value::object());
+	json::Value e11(json::object());
 	ASSERT_TRUE(e11.is_object(), "e11 is not an object after property assignment");
 
-	e11.set_key("foo", json::Value::from("test"));
+	e11.set_key("foo", json::from("test"));
 	ASSERT_EQ(e11.size(), 1, "e11 has incorrect number of properties after assignment");
 	ASSERT_EQ(e11["foo"].as_string(), "test", "e11.foo has incorrect value after assignment");
 
-	e11.set_key("foo", json::Value::from("again"));
+	e11.set_key("foo", json::from("again"));
 	ASSERT_TRUE(e11.is_object(), "e11 is not an object after property assignment");
 	ASSERT_EQ(e11.size(), 1, "e11 has incorrect number of properties after assignment");
 	ASSERT_EQ(e11["foo"].as_string(), "again", "e11.foo has incorrect value after assignment");
 
-	e11.set_key("bar", json::Value::from("test"));
+	e11.set_key("bar", json::from("test"));
 	ASSERT_TRUE(e11.is_object(), "e11 is not an object after property assignment");
 	ASSERT_EQ(e11.size(), 2, "e11 has incorrect number of properties after assignment");
 	ASSERT_EQ(e11["bar"].as_string(), "test", "e11.foo has incorrect value after assignment");
@@ -122,11 +120,11 @@ int main() {
 	e11.clear();
 	ASSERT_EQ(e11.size(), 0, "e11 has incorrect number of properties after clear");
 
-	json::Value e12(json::Value::object());
+	json::Value e12(json::object());
-	e12.set_key("foo", json::Value::from("test"));
+	e12.set_key("foo", json::from("test"));
-	e12.set_key("bar", json::Value::from(3));
+	e12.set_key("bar", json::from(3));
 	char* out_cstr = e12.save_string(0);
-	string out(out_cstr);
+	std::string out(out_cstr);
 	free(out_cstr);
 	ASSERT_EQ(out, "{\"bar\": 3,\"foo\": \"test\"}\n", "object did not serialize as expected");
 
@@ -144,18 +142,18 @@ int main() {
 	const json::Value e13(e12);
 	ASSERT_EQ(e13["bar"].as_integer(), 3, "e13.bar has incorrect value after copy");
 
-	json::Value e14(json::Value::object());
+	json::Value e14(json::object());
 	ASSERT_TRUE(e14.is_object(), "e14 is not an object after construction");
-	e14.set_key("foo", json::Value::object());
+	e14.set_key("foo", json::object());
 	ASSERT_TRUE(e14["foo"].is_object(), "e14.foo is not an object after assignment");
-	e14["foo"]["bar"] = json::Value::from(42);
+	e14["foo"]["bar"] = json::from(42);
 	ASSERT_EQ(e14["foo"]["bar"].as_integer(), 42, "e14.foo.bar has incorrect value after assignment");
 
-	json::Value e15(json::Value::array());
+	json::Value e15(json::array());
 	ASSERT_TRUE(e15.is_array(), "e15 is not an array after construction");
-	e15.set_at(0, json::Value::from(42));
+	e15.set_at(0, json::from(42));
 	ASSERT_EQ(e15[0].as_integer(), 42, "e15[0] has incorrect value after assignment");
-	e15[0] = json::Value::from("foo");
+	e15[0] = json::from("foo");
 	ASSERT_EQ(e15[0].as_string(), "foo", "e15[0] has incorrecy value after assignment");
 	return 0;
 }