From c4f6132aca65bce357e802a4010c005fdc8952c8 Mon Sep 17 00:00:00 2001
From: Matej Sekoranja <unknown>
Date: Fri, 8 Feb 2013 22:45:04 +0100
Subject: [PATCH] added simple operators 'test', added <<= >>= operators to
 PVScalar

---
 pvDataApp/pv/pvData.h        | 14 ++++++
 testApp/pv/Makefile          |  4 ++
 testApp/pv/testOperators.cpp | 85 ++++++++++++++++++++++++++++++++++++
 3 files changed, 103 insertions(+)
 create mode 100644 testApp/pv/testOperators.cpp

diff --git a/pvDataApp/pv/pvData.h b/pvDataApp/pv/pvData.h
index 364ee32..4f15742 100644
--- a/pvDataApp/pv/pvData.h
+++ b/pvDataApp/pv/pvData.h
@@ -423,6 +423,20 @@ public:
     	return o << get();
     }
 
+    // get operator
+    // double value; doubleField >>= value;
+    void operator>>=(T& value) const
+	{
+    	value = get();
+	}
+
+    // put operator
+    // double value = 12.8; doubleField <<= value;
+    void operator<<=(T value)
+	{
+    	put(value);
+	}
+
 protected:
     PVScalarValue(ScalarConstPtr const & scalar)
     : PVScalar(scalar) {}
diff --git a/testApp/pv/Makefile b/testApp/pv/Makefile
index 7893a3e..558e4c0 100644
--- a/testApp/pv/Makefile
+++ b/testApp/pv/Makefile
@@ -42,6 +42,10 @@ PROD_HOST += testPVStructureArray
 testPVStructureArray_SRCS += testPVStructureArray.cpp
 testPVStructureArray_LIBS += pvData Com
 
+PROD_HOST += testOperators
+testOperators_SRCS += testOperators.cpp
+testOperators_LIBS += pvData Com
+
 include $(TOP)/configure/RULES
 #----------------------------------------
 #  ADD RULES AFTER THIS LINE
diff --git a/testApp/pv/testOperators.cpp b/testApp/pv/testOperators.cpp
new file mode 100644
index 0000000..07e4a8c
--- /dev/null
+++ b/testApp/pv/testOperators.cpp
@@ -0,0 +1,85 @@
+/* testOperators.cpp */
+/**
+ * Copyright - See the COPYRIGHT that is included with this distribution.
+ * EPICS pvData is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution.
+ */
+/* Author:  Matej Sekoranja Date: 2013.02 */
+
+#include <iostream>
+
+#include <pv/pvData.h>
+#include <pv/standardField.h>
+#include <pv/standardPVField.h>
+
+#include <epicsAssert.h>
+
+using namespace epics::pvData;
+
+static PVDataCreatePtr pvDataCreate = getPVDataCreate();
+static StandardFieldPtr standardField = getStandardField();
+static StandardPVFieldPtr standardPVField = getStandardPVField();
+
+int main(int, char*)
+{
+    PVStructurePtr pvStructure = standardPVField->scalar(pvDouble,
+        "alarm,timeStamp,display,control,valueAlarm");
+
+    const double testDV = 12.8;
+
+    PVDoublePtr pvValue = pvStructure->getDoubleField("value");
+    *pvValue <<= testDV;
+
+    double dv;
+    *pvValue >>= dv;
+    assert(testDV == dv);
+
+
+    const std::string testSV = "test message";
+
+    PVStringPtr pvMessage = pvStructure->getStringField("alarm.message");
+    *pvMessage <<= testSV;
+
+    std::string sv;
+    *pvMessage >>= sv;
+    assert(testSV == sv);
+
+    //
+    // to stream tests
+    //
+
+    std::cout << *pvValue << std::endl;
+    std::cout << *pvMessage << std::endl;
+    std::cout << *pvStructure << std::endl;
+
+
+    StringArray choices;
+    choices.reserve(3);
+    choices.push_back("one");
+    choices.push_back("two");
+    choices.push_back("three");
+    pvStructure = standardPVField->enumerated(choices, "alarm,timeStamp,valueAlarm");
+    std::cout << *pvStructure << std::endl;
+
+
+
+    pvStructure = standardPVField->scalarArray(pvBoolean,"alarm,timeStamp");
+    std::cout << *pvStructure << std::endl;
+
+
+    StructureConstPtr structure = standardField->scalar(pvDouble, "alarm,timeStamp");
+    pvStructure = standardPVField->structureArray(structure,"alarm,timeStamp");
+    size_t num = 2;
+    PVStructurePtrArray pvStructures;
+    pvStructures.reserve(num);
+    for(size_t i=0; i<num; i++) {
+        pvStructures.push_back(
+            pvDataCreate->createPVStructure(structure));
+    }
+    PVStructureArrayPtr pvStructureArray = pvStructure->getStructureArrayField("value");
+    pvStructureArray->put(0, num, pvStructures, 0);
+    std::cout << *pvStructure << std::endl;
+
+    return 0;
+}
+