From 8f98d9792b9c55d4eeb61d126094d493941de0fb Mon Sep 17 00:00:00 2001
From: Michael Davidsaver <mdavidsaver@gmail.com>
Date: Thu, 7 Sep 2017 15:53:40 -0500
Subject: [PATCH] add typemap.h

helper for switch() over DBF or PVD scalar type codes
---
 src/pv/Makefile  |  1 +
 src/pv/typemap.h | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+)
 create mode 100644 src/pv/typemap.h

diff --git a/src/pv/Makefile b/src/pv/Makefile
index 074d56f..11fdab1 100644
--- a/src/pv/Makefile
+++ b/src/pv/Makefile
@@ -10,6 +10,7 @@ INC += pv/convert.h
 INC += pv/standardField.h
 INC += pv/standardPVField.h
 INC += pv/pvSubArrayCopy.h
+INC += pv/typemap.h
 INC += pv/pvdVersion.h
 INC += pv/pvdVersionNum.h
 
diff --git a/src/pv/typemap.h b/src/pv/typemap.h
new file mode 100644
index 0000000..b2d17a7
--- /dev/null
+++ b/src/pv/typemap.h
@@ -0,0 +1,41 @@
+/* #define CASE(BASETYPE, PVATYPE, DBFTYPE, PVACODE)
+ *
+ * Helper for switch() on type code
+ *
+ * BASETYPE is suffix of type from epicsTypes.h
+ *    epics ## BASETYPE -> eg. epicsUInt8
+ * PVATYPE is storage type
+ *    PVATYPE -> eg epics::pvData::uint8
+ * DBFTYPE is suffix of DBF_*
+ *    DBF_ ## DBFTYPE -> eg. DBF_UCHAR
+ * PVACODE is suffix of ScalarType enum
+ *    epics::pvData::pv ## PVACODE -> epics::pvData::pvUByte
+ */
+CASE(UInt8, epics::pvData::uint8, UCHAR, UByte)
+CASE(Int8, epics::pvData::int8, CHAR, Byte)
+CASE(UInt16, epics::pvData::uint16, USHORT, UShort)
+CASE(Int16, epics::pvData::int16, SHORT, Short)
+CASE(UInt32, epics::pvData::uint32, ULONG, UInt)
+CASE(Int32, epics::pvData::int32, LONG, Int)
+CASE(Float32, float, FLOAT, Float)
+CASE(Float64, double, DOUBLE, Double)
+#ifndef CASE_SKIP_BOOL
+CASE(UInt8, epics::pvData::boolean, UCHAR, Boolean)
+#endif
+#ifdef CASE_REAL_INT64
+CASE(UInt64, epics::pvData::uint64, UINT64, ULong)
+CASE(Int64, epics::pvData::int64, INT64, Long)
+#elif defined(CASE_SQUEEZE_INT64)
+CASE(UInt32, epics::pvData::uint64, ULONG, ULong)
+CASE(Int32, epics::pvData::int64, LONG, Long)
+#else
+/* nothing */
+#endif
+#ifdef CASE_ENUM
+// yes really, Base uses SHORT (16-bit) while PVD uses Int (32-bit)
+CASE(Enum16, epics::pvData::int32, ENUM, Int)
+#endif
+#ifdef CASE_STRING
+CASE(Int8, std::string, CHAR, String)
+#endif
+/* #undef CASE */