TimeDelta add +(pos), -(neg) operation

hikyuu_cpp/hikyuu/datetime/TimeDelta.h

@@ -92,6 +92,11 @@ public:
         return m_duration.is_negative();
     }
 
+    /** 求绝对值 */
+    TimeDelta abs() const {
+        return TimeDelta::fromTicks(std::abs(ticks()));
+    }
+
     /** 转换为 boost::posix_time::time_duration */
     bt::time_duration time_duration() const {
         return m_duration;
@@ -115,11 +120,6 @@ public:
     //
     /////////////////////////////////////////////////////////////////
 
-    /** 求绝对值 */
-    TimeDelta abs(TimeDelta td) const {
-        return TimeDelta::fromTicks(std::abs(td.ticks()));
-    }
-
     /** 两个时长相加 */
     TimeDelta operator+(TimeDelta td) const {
         return TimeDelta(td.m_duration + m_duration);
@@ -130,6 +130,16 @@ public:
         return TimeDelta(m_duration - td.m_duration);
     }
 
+    /** + 号,返回相同值 */
+    TimeDelta operator+() const {
+        return *this;
+    }
+
+    /** - 号, 求负值，相当于 TimeDelta(0) 减自身 */
+    TimeDelta operator-() const {
+        return TimeDelta::fromTicks(-ticks());
+    }
+
     /** 时长乘以系数，结果四舍五入 */
     TimeDelta operator*(double p) const;
 

hikyuu_cpp/unit_test/libs/hikyuu/datetime/test_TimeDelta.cpp

@@ -233,6 +233,14 @@ BOOST_AUTO_TEST_CASE(test_TimeDelta_operator) {
     BOOST_CHECK(td.microseconds() == 0);
     BOOST_CHECK(td.ticks() == -90000000000LL);
 
+    /** @arg + 号 */
+    BOOST_CHECK(+TimeDelta(1) == TimeDelta(1));
+    BOOST_CHECK(+TimeDelta(-1) == TimeDelta(-1));
+
+    /** @arg -号 */
+    BOOST_CHECK(-TimeDelta(1) == TimeDelta(-1));
+    BOOST_CHECK(-TimeDelta(-1) == TimeDelta(1));
+
     /** @arg 相减，结果为0 */
     td = TimeDelta(1, 0, 1) - TimeDelta(0, 24, 0, 60);
     BOOST_CHECK(td.isNegative() == false);

hikyuu_pywrap/_TimeDelta.cpp

@@ -17,6 +17,11 @@ using namespace hku;
 double (TimeDelta::*TimeDelta_div_1)(TimeDelta) const = &TimeDelta::operator/;
 TimeDelta (TimeDelta::*TimeDelta_div_2)(double) const = &TimeDelta::operator/;
 
+TimeDelta (TimeDelta::*TimeDelta_pos)() const = &TimeDelta::operator+;
+TimeDelta (TimeDelta::*TimeDelta_add)(TimeDelta) const = &TimeDelta::operator+;
+TimeDelta (TimeDelta::*TimeDelta_neg)() const = &TimeDelta::operator-;
+TimeDelta (TimeDelta::*TimeDelta_sub)(TimeDelta) const = &TimeDelta::operator-;
+
 void export_TimeDelta() {
     class_<TimeDelta>("TimeDelta", init<>())
       .def(init<int64_t, int64_t, int64_t, int64_t, int64_t, int64_t>(
@@ -54,8 +59,10 @@ void export_TimeDelta() {
       .def("__le__", &TimeDelta::operator>=)
 
       .def("__abs__", &TimeDelta::abs)
-      .def("__add__", &TimeDelta::operator+)
+      .def("__add__", TimeDelta_add)
-      .def("__sub__", &TimeDelta::operator-)
+      .def("__pos__", TimeDelta_pos)
+      .def("__sub__", TimeDelta_sub)
+      .def("__neg__", TimeDelta_neg)
       .def("__mul__", &TimeDelta::operator*)
       .def("__rmul__", &TimeDelta::operator*)
       .def("__truediv__", TimeDelta_div_1)