X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FScripting%2FNasalSys.hxx;h=5434844998fb077d1a5df1cab0e771a960703406;hb=6dd47822545bf27f69a18a2d0ccc8abf91daa8d5;hp=0a13f12127a46eea3ff77ef84d976a1df6abb94d;hpb=32968d81f3a815c4a7998d708d6171373b8f76ff;p=flightgear.git diff --git a/src/Scripting/NasalSys.hxx b/src/Scripting/NasalSys.hxx index 0a13f1212..543484499 100644 --- a/src/Scripting/NasalSys.hxx +++ b/src/Scripting/NasalSys.hxx @@ -3,9 +3,70 @@ #include #include +#include #include +#include +#include +#include + +#include + class FGNasalScript; +class FGNasalListener; +class SGCondition; + +/** Nasal model data container. + * load and unload methods must be run in main thread (not thread-safe). */ +class FGNasalModelData : public SGReferenced +{ +public: + /** Constructor to be run in an arbitrary thread. */ + FGNasalModelData(SGPropertyNode *root, const string& path, SGPropertyNode *prop, + SGPropertyNode* load, SGPropertyNode* unload) : + _path(path), + _root(root), _prop(prop), + _load(load), _unload(unload) + { + } + + /** Load hook. Always call from inside the main loop. */ + void load(); + + /** Unload hook. Always call from inside the main loop. */ + void unload(); + +private: + static unsigned int _module_id; + + string _module, _path; + SGPropertyNode_ptr _root, _prop; + SGConstPropertyNode_ptr _load, _unload; +}; + +/** Thread-safe proxy for FGNasalModelData. + * modelLoaded/destroy methods only register the requested + * operation. Actual (un)loading of Nasal module is deferred + * and done in the main loop. */ +class FGNasalModelDataProxy : public simgear::SGModelData +{ +public: + FGNasalModelDataProxy(SGPropertyNode *root = 0) : + _root(root), _data(0) + { + } + + ~FGNasalModelDataProxy(); + + void modelLoaded(const string& path, SGPropertyNode *prop, osg::Node *); + +protected: + SGPropertyNode_ptr _root; + SGSharedPtr _data; +}; + +SGPropertyNode* ghostToPropNode(naRef ref); +SGCondition* conditionGhost(naRef r); class FGNasalSys : public SGSubsystem { @@ -13,11 +74,11 @@ public: FGNasalSys(); virtual ~FGNasalSys(); virtual void init(); - virtual void update(double dt) { /* noop */ } + virtual void update(double dt); // Loads a nasal script from an external file and inserts it as a // global module of the specified name. - void loadModule(SGPath file, const char* moduleName); + bool loadModule(SGPath file, const char* moduleName); // Simple hook to run arbitrary source code. Returns a bool to // indicate successful execution. Does *not* return any Nasal @@ -34,25 +95,69 @@ public: FGNasalScript* parseScript(const char* src, const char* name=0); // Implementation of the settimer extension function - void setTimer(int argc, naRef* args); + void setTimer(naContext c, int argc, naRef* args); // Implementation of the setlistener extension function - void setListener(int argc, naRef* args); + naRef setListener(naContext c, int argc, naRef* args); + naRef removeListener(naContext c, int argc, naRef* args); // Returns a ghost wrapper for the current _cmdArg naRef cmdArgGhost(); - + // Callbacks for command and timer bindings + virtual bool handleCommand( const char* moduleName, + const char* fileName, + const char* src, + const SGPropertyNode* arg = 0 ); virtual bool handleCommand(const SGPropertyNode* arg); - void createModule(const char* moduleName, const char* fileName, - const char* src, int len); - - void screenPrint(const char* src); - + bool createModule(const char* moduleName, const char* fileName, + const char* src, int len, const SGPropertyNode* cmdarg=0, + int argc=0, naRef*args=0); + + void deleteModule(const char* moduleName); + + /** + * Set member of specified hash to given value + */ + void hashset(naRef hash, const char* key, naRef val); + + /** + * Set member of globals hash to given value + */ + void globalsSet(const char* key, naRef val); + + naRef call(naRef code, int argc, naRef* args, naRef locals); + + naRef callMethod(naRef code, naRef self, int argc, naRef* args, naRef locals); + + naRef propNodeGhost(SGPropertyNode* handle); + + void registerToLoad(FGNasalModelData* data) { _loadList.push(data);} + void registerToUnload(FGNasalModelData* data) { _unloadList.push(data);} + + // can't call this 'globals' due to naming clash + naRef nasalGlobals() const + { return _globals; } + + naContext context() const + { return _context; } + + // This mechanism is here to allow naRefs to be passed to + // locations "outside" the interpreter. Normally, such a + // reference would be garbage collected unexpectedly. By passing + // it to gcSave and getting a key/handle, it can be cached in a + // globals.__gcsave hash. Be sure to release it with gcRelease + // when done. + int gcSave(naRef r); + void gcRelease(int key); private: friend class FGNasalScript; friend class FGNasalListener; + friend class FGNasalModuleListener; + + SGLockedQueue > _loadList; + SGLockedQueue > _unloadList; // // FGTimer subclass for handling Nasal timer callbacks. @@ -61,38 +166,38 @@ private: // struct NasalTimer { virtual void timerExpired(); + virtual ~NasalTimer() {} naRef handler; int gcKey; FGNasalSys* nasal; }; + // Listener + std::map _listener; + vector _dead_listener; + static int _listenerId; + void loadPropertyScripts(); - void hashset(naRef hash, const char* key, naRef val); + void loadPropertyScripts(SGPropertyNode* n); + void loadScriptDirectory(simgear::Dir nasalDir); + void addModule(string moduleName, simgear::PathList scripts); void logError(naContext); naRef parse(const char* filename, const char* buf, int len); naRef genPropsModule(); - naRef propNodeGhost(SGPropertyNode* handle); - - // This mechanism is here to allow naRefs to be passed to - // locations "outside" the interpreter. Normally, such a - // reference would be garbage collected unexpectedly. By passing - // it to gcSave and getting a key/handle, it can be cached in a - // globals.__gcsave hash. Be sure to release it with gcRelease - // when done. - int gcSave(naRef r); - void gcRelease(int key); naContext _context; naRef _globals; - SGPropertyNode* _cmdArg; + SGPropertyNode_ptr _cmdArg; int _nextGCKey; naRef _gcHash; + int _callCount; public: void handleTimer(NasalTimer* t); }; + class FGNasalScript { public: ~FGNasalScript() { _nas->gcRelease(_gcKey); } @@ -110,24 +215,53 @@ private: FGNasalSys* _nas; }; + class FGNasalListener : public SGPropertyChangeListener { public: - FGNasalListener(naRef handler, FGNasalSys* nasal) - : _handler(handler), _nas(nasal) {} - - void valueChanged(SGPropertyNode* node) { - _nas->_cmdArg = node; - naContext subc = naNewContext(); - naCall(subc, _handler, 0, 0, naNil(), naNil()); - if(naGetError(subc)) - _nas->logError(subc); - naFreeContext(subc); - } + FGNasalListener(SGPropertyNode* node, naRef code, FGNasalSys* nasal, + int key, int id, int init, int type); + + virtual ~FGNasalListener(); + virtual void valueChanged(SGPropertyNode* node); + virtual void childAdded(SGPropertyNode* parent, SGPropertyNode* child); + virtual void childRemoved(SGPropertyNode* parent, SGPropertyNode* child); private: + bool changed(SGPropertyNode* node); + void call(SGPropertyNode* which, naRef mode); + friend class FGNasalSys; - naRef _handler; + SGPropertyNode_ptr _node; + naRef _code; + int _gcKey; + int _id; FGNasalSys* _nas; + int _init; + int _type; + unsigned int _active; + bool _dead; + long _last_int; + double _last_float; + string _last_string; +}; + + +class NasalXMLVisitor : public XMLVisitor { +public: + NasalXMLVisitor(naContext c, int argc, naRef* args); + virtual ~NasalXMLVisitor() { naFreeContext(_c); } + + virtual void startElement(const char* tag, const XMLAttributes& a); + virtual void endElement(const char* tag); + virtual void data(const char* str, int len); + virtual void pi(const char* target, const char* data); + +private: + void call(naRef func, int num, naRef a = naNil(), naRef b = naNil()); + naRef make_string(const char* s, int n = -1); + + naContext _c; + naRef _start_element, _end_element, _data, _pi; }; #endif // __NASALSYS_HXX