MT#55831 dsm: helper functions / macros for modules:

replaceParams/SET_ERROR/CLR_ERROR

use resolveVars in module actions/condition to replace only one variable/param,
use replaceParams to replace substrings as well,

e.g.  myAction($myvar) - resolveVars
      myOtherAction("this is $(myvar) and #(myparam) replaced") - replaceParams

Change-Id: Ia8d39259e2c24111b4ffe765cbd637627be346ab

apps/dsm/DSMCoreModule.h

@@ -171,6 +171,10 @@ class TestDSMCondition
 	     map<string,string>* event_params);
 };
 
+/** return string q with variables/params/selects replaced */
+string replaceParams(const string& q, AmSession* sess, DSMSession* sc_sess,
+		     map<string,string>* event_params);
+
 /** return string q with variables/params/selects replaced */
 string replaceParams(const string& q, AmSession* sess, DSMSession* sc_sess,
 		     map<string,string>* event_params);

apps/dsm/DSMSession.h

@@ -111,6 +111,18 @@ using std::map;
     s->CLR_STRERROR;			\
   } while (0)
 
+#define SET_ERROR(s, errno, errstr)	\
+  do {					\
+    s->SET_ERRNO(errno);		\
+    s->SET_STRERROR(errstr);		\
+  } while (0)
+
+#define CLR_ERROR(s)			\
+  do {					\
+    s->CLR_ERRNO;			\
+    s->CLR_STRERROR;			\
+  } while (0)
+
 typedef map<string, string> VarMapT;
 typedef map<string, AmArg>  AVarMapT;