Allow disabling embedded nasal (load/unload scripts).

[flightgear.git] / src / Scripting / NasalPositioned.cxx

diff --git a/src/Scripting/NasalPositioned.cxx b/src/Scripting/NasalPositioned.cxx
index 9da830f31c2961c7c770b70cafa2b51a3067a7b5..1d2b41402a28a71b02f12e0266a2f66463f20af4 100644 (file)
--- a/src/Scripting/NasalPositioned.cxx
+++ b/src/Scripting/NasalPositioned.cxx
@@ -124,6 +124,17 @@ static naRef stringToNasal(naContext c, const std::string& s)
                    s.length());
 }
 
+static bool convertToNum(naRef v, double& result)
+{
+    naRef n = naNumValue(v);
+    if (naIsNil(n)) {
+        return false; // couldn't convert
+    }
+    
+    result = n.num;
+    return true;
+}
+
 static WayptFlag wayptFlagFromString(const char* s)
 {
   if (!strcmp(s, "sid")) return WPT_DEPARTURE;
@@ -1118,7 +1129,11 @@ static naRef f_airport_comms(naContext c, naRef me, int argc, naRef* args)
     naRef comms = naNewVector(c);
     
 // if we have an explicit type, return a simple vector of frequencies
-    if (argc > 0 && naIsScalar(args[0])) {
+    if (argc > 0 && !naIsString(args[0])) {
+        naRuntimeError(c, "airport.comms argument must be a frequency type name");
+    }
+    
+    if (argc > 0) {
         std::string commName = naStr_data(args[0]);
         FGPositioned::Type commType = FGPositioned::typeFromName(commName);
         
@@ -1920,6 +1935,10 @@ static naRef f_createWP(naContext c, naRef me, int argc, naRef* args)
 // set waypt flags - approach, departure, pseudo, etc
   if (argc > argOffset) {
     WayptFlag f = wayptFlagFromString(naStr_data(args[argOffset++]));
+    if (f == 0) {
+      naRuntimeError(c, "createWP: bad waypoint role");
+    }
+      
     wpt->setFlag(f);
   }
   
@@ -1947,6 +1966,9 @@ static naRef f_createWPFrom(naContext c, naRef me, int argc, naRef* args)
   // set waypt flags - approach, departure, pseudo, etc
   if (argc > 1) {
     WayptFlag f = wayptFlagFromString(naStr_data(args[1]));
+    if (f == 0) {
+      naRuntimeError(c, "createWPFrom: bad waypoint role");
+    }
     wpt->setFlag(f);
   }
   
@@ -2116,6 +2138,10 @@ static naRef f_flightplan_clearWPType(naContext c, naRef me, int argc, naRef* ar
   }
   
   WayptFlag flag = wayptFlagFromString(naStr_data(args[0]));
+  if (flag == 0) {
+    naRuntimeError(c, "clearWPType: bad waypoint role");
+  }
+    
   fp->clearWayptsWithFlag(flag);
   return naNil();
 }
@@ -2171,13 +2197,14 @@ static naRef f_leg_setSpeed(naContext c, naRef me, int argc, naRef* args)
   if (!leg) {
     naRuntimeError(c, "leg.setSpeed called on non-flightplan-leg object");
   }
-  
-  if (argc < 2) {
-    naRuntimeError(c, "bad arguments to leg.setSpeed");
-  }
-  
+
+    double speed = 0.0;
+    if ((argc < 2) || !convertToNum(args[0], speed))
+        naRuntimeError(c, "bad arguments to setSpeed");
+    
   RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
-  leg->setSpeed(rr, args[0].num);
+  leg->setSpeed(rr, speed);
+  
   return naNil();
 }
 
@@ -2188,12 +2215,13 @@ static naRef f_leg_setAltitude(naContext c, naRef me, int argc, naRef* args)
     naRuntimeError(c, "leg.setAltitude called on non-flightplan-leg object");
   }
   
-  if (argc < 2) {
-    naRuntimeError(c, "bad arguments to leg.setAltitude");
-  }
-  
+    double alt = 0.0;
+    if ((argc < 2) || !convertToNum(args[0], alt))
+        naRuntimeError(c, "bad arguments to leg.setAltitude");
+    
   RouteRestriction rr = routeRestrictionFromString(naStr_data(args[1]));
-  leg->setAltitude(rr, args[0].num);
+    leg->setAltitude(rr, alt);
+
   return naNil();
 }
 
@@ -2392,10 +2420,10 @@ static struct { const char* name; naCFunction func; } funcs[] = {
 };
 
 
-naRef initNasalPositioned(naRef globals, naContext c, naRef gcSave)
+naRef initNasalPositioned(naRef globals, naContext c)
 {
     airportPrototype = naNewHash(c);
-    hashset(c, gcSave, "airportProto", airportPrototype);
+    naSave(c, airportPrototype);
   
     hashset(c, airportPrototype, "runway", naNewFunc(c, naNewCCode(c, f_airport_runway)));
     hashset(c, airportPrototype, "runwaysWithoutReciprocals", naNewFunc(c, naNewCCode(c, f_airport_runwaysWithoutReciprocals)));
@@ -2413,7 +2441,7 @@ naRef initNasalPositioned(naRef globals, naContext c, naRef gcSave)
     hashset(c, airportPrototype, "tostring", naNewFunc(c, naNewCCode(c, f_airport_toString)));
   
     flightplanPrototype = naNewHash(c);
-    hashset(c, gcSave, "flightplanProto", flightplanPrototype);
+    naSave(c, flightplanPrototype);
       
     hashset(c, flightplanPrototype, "getWP", naNewFunc(c, naNewCCode(c, f_flightplan_getWP)));
     hashset(c, flightplanPrototype, "currentWP", naNewFunc(c, naNewCCode(c, f_flightplan_currentWP))); 
@@ -2431,19 +2459,19 @@ naRef initNasalPositioned(naRef globals, naContext c, naRef gcSave)
     hashset(c, flightplanPrototype, "finish", naNewFunc(c, naNewCCode(c, f_flightplan_finish)));
     
     waypointPrototype = naNewHash(c);
-    hashset(c, gcSave, "wayptProto", waypointPrototype);
+    naSave(c, waypointPrototype);
     
     hashset(c, waypointPrototype, "navaid", naNewFunc(c, naNewCCode(c, f_waypoint_navaid)));
     hashset(c, waypointPrototype, "runway", naNewFunc(c, naNewCCode(c, f_waypoint_runway)));
     hashset(c, waypointPrototype, "airport", naNewFunc(c, naNewCCode(c, f_waypoint_airport)));
   
     procedurePrototype = naNewHash(c);
-    hashset(c, gcSave, "procedureProto", procedurePrototype);
+    naSave(c, procedurePrototype);
     hashset(c, procedurePrototype, "transition", naNewFunc(c, naNewCCode(c, f_procedure_transition)));
     hashset(c, procedurePrototype, "route", naNewFunc(c, naNewCCode(c, f_procedure_route)));
   
     fpLegPrototype = naNewHash(c);
-    hashset(c, gcSave, "fpLegProto", fpLegPrototype);
+    naSave(c, fpLegPrototype);
     hashset(c, fpLegPrototype, "setSpeed", naNewFunc(c, naNewCCode(c, f_leg_setSpeed)));
     hashset(c, fpLegPrototype, "setAltitude", naNewFunc(c, naNewCCode(c, f_leg_setAltitude)));
     hashset(c, fpLegPrototype, "path", naNewFunc(c, naNewCCode(c, f_leg_path)));