#include <simgear/math/sg_random.h>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/sg_dir.hxx>
+#include <simgear/misc/SimpleMarkdown.hxx>
#include <simgear/structure/commands.hxx>
#include <simgear/math/sg_geodesy.hxx>
#include <simgear/structure/event_mgr.hxx>
#include "NasalSGPath.hxx"
#include "NasalSys.hxx"
#include "NasalSys_private.hxx"
+#include "NasalAircraft.hxx"
#include "NasalModelData.hxx"
#include "NasalPositioned.hxx"
#include "NasalCanvas.hxx"
return buf;
}
-FGNasalSys::FGNasalSys()
+FGNasalSys::FGNasalSys() :
+ _inited(false)
{
nasalSys = this;
_context = 0;
return callMethod(code, naNil(), argc, args, locals);
}
+naRef FGNasalSys::callWithContext(naContext ctx, naRef code, int argc, naRef* args, naRef locals)
+{
+ return callMethodWithContext(ctx, code, naNil(), argc, args, locals);
+}
+
// Does a naCall() in a new context. Wrapped here to make lock
// tracking easier. Extension functions are called with the lock, but
// we have to release it before making a new naCall(). So rather than
return naCallMethod(code, self, argc, args, locals);
}
+naRef FGNasalSys::callMethodWithContext(naContext ctx, naRef code, naRef self, int argc, naRef* args, naRef locals)
+{
+ return naCallMethodCtx(ctx, code, self, argc, args, locals);
+}
+
FGNasalSys::~FGNasalSys()
{
+ if (_inited) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "Nasal was not shutdown");
+ }
nasalSys = 0;
}
bool FGNasalSys::parseAndRun(const char* sourceCode)
{
- naRef code = parse("FGNasalSys::parseAndRun()", sourceCode,
+ naContext ctx = naNewContext();
+ naRef code = parse(ctx, "FGNasalSys::parseAndRun()", sourceCode,
strlen(sourceCode));
- if(naIsNil(code))
+ if(naIsNil(code)) {
+ naFreeContext(ctx);
return false;
- call(code, 0, 0, naNil());
+ }
+ callWithContext(ctx, code, 0, 0, naNil());
+ naFreeContext(ctx);
return true;
}
// This allows a Nasal object to hold onto a property path and use it
// like a node object, e.g. setprop(ObjRoot, "size-parsecs", 2.02). This
// is the utility function that walks the property tree.
-// Future enhancement: support integer arguments to specify array
-// elements.
-static SGPropertyNode* findnode(naContext c, naRef* vec, int len)
+static SGPropertyNode* findnode(naContext c, naRef* vec, int len, bool create=false)
{
SGPropertyNode* p = globals->get_props();
try {
for(int i=0; i<len; i++) {
naRef a = vec[i];
- if(!naIsString(a)) return 0;
- p = p->getNode(naStr_data(a));
+ if(!naIsString(a)) {
+ naRuntimeError(c, "bad argument to setprop/getprop path: expected a string");
+ }
+ naRef b = i < len-1 ? naNumValue(vec[i+1]) : naNil();
+ if (!naIsNil(b)) {
+ p = p->getNode(naStr_data(a), (int)b.num, create);
+ i++;
+ } else {
+ p = p->getNode(naStr_data(a), create);
+ }
if(p == 0) return 0;
}
} catch (const string& err) {
naRuntimeError(c, (char *)err.c_str());
- return 0;
}
return p;
}
static naRef f_getprop(naContext c, naRef me, int argc, naRef* args)
{
using namespace simgear;
- const SGPropertyNode* p = findnode(c, args, argc);
+ if (argc < 1) {
+ naRuntimeError(c, "getprop() expects at least 1 argument");
+ }
+ const SGPropertyNode* p = findnode(c, args, argc, false);
if(!p) return naNil();
switch(p->getType()) {
// final argument.
static naRef f_setprop(naContext c, naRef me, int argc, naRef* args)
{
-#define BUFLEN 1024
- char buf[BUFLEN + 1];
- buf[BUFLEN] = 0;
- char* p = buf;
- int buflen = BUFLEN;
- if(argc < 2) naRuntimeError(c, "setprop() expects at least 2 arguments");
- for(int i=0; i<argc-1; i++) {
- naRef s = naStringValue(c, args[i]);
- if(naIsNil(s)) return naNil();
- strncpy(p, naStr_data(s), buflen);
- p += naStr_len(s);
- buflen = BUFLEN - (p - buf);
- if(i < (argc-2) && buflen > 0) {
- *p++ = '/';
- buflen--;
- }
+ if (argc < 2) {
+ naRuntimeError(c, "setprop() expects at least 2 arguments");
}
+ naRef val = args[argc - 1];
+ SGPropertyNode* p = findnode(c, args, argc-1, true);
- SGPropertyNode* props = globals->get_props();
- naRef val = args[argc-1];
bool result = false;
try {
- if(naIsString(val)) result = props->setStringValue(buf, naStr_data(val));
+ if(naIsString(val)) result = p->setStringValue(naStr_data(val));
else {
- naRef n = naNumValue(val);
- if(naIsNil(n))
+ if(!naIsNum(val))
naRuntimeError(c, "setprop() value is not string or number");
- if (SGMisc<double>::isNaN(n.num)) {
+ if (SGMisc<double>::isNaN(val.num)) {
naRuntimeError(c, "setprop() passed a NaN");
}
- result = props->setDoubleValue(buf, n.num);
+ result = p->setDoubleValue(val.num);
}
} catch (const string& err) {
naRuntimeError(c, (char *)err.c_str());
}
return naNum(result);
-#undef BUFLEN
}
// print() extension function. Concatenates and prints its arguments
}
TimerObj* timerObj = new TimerObj(nasalSys, func, self, args[0].num);
- return NasalTimerObj::create(c, timerObj);
+ return nasal::to_nasal(c, timerObj);
}
// setlistener(func, property, bool) extension function. Falls through to
return naStr_fromdata(naNewString(c), const_cast<char*>(file), strlen(file));
}
+/**
+ * Parse very simple and small subset of markdown
+ *
+ * parse_markdown(src)
+ */
+static naRef f_parse_markdown(naContext c, naRef me, int argc, naRef* args)
+{
+ nasal::CallContext ctx(c, me, argc, args);
+ return ctx.to_nasal(
+ simgear::SimpleMarkdown::parse(ctx.requireArg<std::string>(0))
+ );
+}
+
+/**
+ * Create md5 hash from given string
+ *
+ * md5(str)
+ */
+static naRef f_md5(naContext c, naRef me, int argc, naRef* args)
+{
+ if( argc != 1 || !naIsString(args[0]) )
+ naRuntimeError(c, "md5(): wrong type or number of arguments");
+
+ return nasal::to_nasal(
+ c,
+ simgear::strutils::md5(naStr_data(args[0]), naStr_len(args[0]))
+ );
+}
+
// Return UNIX epoch time in seconds.
static naRef f_systime(naContext c, naRef me, int argc, naRef* args)
{
{ "resolvepath", f_resolveDataPath },
{ "finddata", f_findDataDir },
{ "parsexml", f_parsexml },
+ { "parse_markdown", f_parse_markdown },
+ { "md5", f_md5 },
{ "systime", f_systime },
{ 0, 0 }
};
void FGNasalSys::init()
{
+ if (_inited) {
+ SG_LOG(SG_GENERAL, SG_ALERT, "duplicate init of Nasal");
+ }
int i;
_context = naNewContext();
initNasalPositioned(_globals, _context);
initNasalPositioned_cppbind(_globals, _context);
+ initNasalAircraft(_globals, _context);
NasalClipboard::init(this);
initNasalCanvas(_globals, _context);
initNasalCondition(_globals, _context);
const char *s = "nasal-dir-initialized";
SGPropertyNode *signal = fgGetNode("/sim/signals", true);
signal->setBoolValue(s, true);
- signal->removeChildren(s, false);
+ signal->removeChildren(s);
// Pull scripts out of the property tree, too
loadPropertyScripts();
// now Nasal modules are loaded, we can do some delayed work
postinitNasalPositioned(_globals, _context);
postinitNasalGUI(_globals, _context);
+
+ _inited = true;
}
void FGNasalSys::shutdown()
{
+ if (!_inited) {
+ return;
+ }
+
shutdownNasalPositioned();
map<int, FGNasalListener *>::iterator it, end = _listener.end();
_globals = naNil();
naGC();
-
+ _inited = false;
}
naRef FGNasalSys::wrappedPropsNode(SGPropertyNode* aProps)
_unloadList.pop()->unload();
}
+ // Destroy all queued ghosts
+ nasal::ghostProcessDestroyList();
+
// The global context is a legacy thing. We use dynamically
// created contexts for naCall() now, so that we can call them
// recursively. But there are still spots that want to use it for
const SGPropertyNode* cmdarg,
int argc, naRef* args)
{
- naRef code = parse(fileName, src, len);
- if(naIsNil(code))
+ naContext ctx = naNewContext();
+ naRef code = parse(ctx, fileName, src, len);
+ if(naIsNil(code)) {
+ naFreeContext(ctx);
return false;
+ }
- naContext ctx = naNewContext();
// See if we already have a module hash to use. This allows the
// user to, for example, add functions to the built-in math
_cmdArg = (SGPropertyNode*)cmdarg;
- call(code, argc, args, locals);
+ callWithContext(ctx, code, argc, args, locals);
hashset(_globals, moduleName, locals);
naFreeContext(ctx);
void FGNasalSys::deleteModule(const char* moduleName)
{
+ if (!_inited) {
+ // can occur on shutdown due to us being shutdown first, but other
+ // subsystems having Nasal objects.
+ return;
+ }
+
naContext ctx = naNewContext();
naRef modname = naNewString(ctx);
naStr_fromdata(modname, (char*)moduleName, strlen(moduleName));
naFreeContext(ctx);
}
-naRef FGNasalSys::parse(const char* filename, const char* buf, int len)
+naRef FGNasalSys::parse(naContext ctx, const char* filename, const char* buf, int len)
{
int errLine = -1;
- naContext ctx = naNewContext();
naRef srcfile = naNewString(ctx);
naStr_fromdata(srcfile, (char*)filename, strlen(filename));
naRef code = naParseCode(ctx, srcfile, 1, (char*)buf, len, &errLine);
SG_LOG(SG_NASAL, SG_ALERT,
"Nasal parse error: " << naGetError(ctx) <<
" in "<< filename <<", line " << errLine);
- naFreeContext(ctx);
return naNil();
}
// Bind to the global namespace before returning
- naRef bound = naBindFunction(ctx, code, _globals);
- naFreeContext(ctx);
- return bound;
+ return naBindFunction(ctx, code, _globals);
}
bool FGNasalSys::handleCommand( const char* moduleName,
const char* src,
const SGPropertyNode* arg )
{
- naRef code = parse(fileName, src, strlen(src));
- if(naIsNil(code)) return false;
+ naContext ctx = naNewContext();
+ naRef code = parse(ctx, fileName, src, strlen(src));
+ if(naIsNil(code)) {
+ naFreeContext(ctx);
+ return false;
+ }
// Commands can be run "in" a module. Make sure that module
// exists, and set it up as the local variables hash for the
// command.
naRef locals = naNil();
if(moduleName[0]) {
- naContext ctx = naNewContext();
naRef modname = naNewString(ctx);
naStr_fromdata(modname, (char*)moduleName, strlen(moduleName));
if(!naHash_get(_globals, modname, &locals)) {
locals = naNewHash(ctx);
naHash_set(_globals, modname, locals);
}
- naFreeContext(ctx);
}
// Cache this command's argument for inspection via cmdarg(). For
// code doesn't need it.
_cmdArg = (SGPropertyNode*)arg;
- call(code, 0, 0, locals);
+ callWithContext(ctx, code, 0, 0, locals);
+ naFreeContext(ctx);
return true;
}
const char* moduleName = arg->getStringValue("module");
return handleCommand( moduleName,
- arg ? arg->getPath(true).c_str() : moduleName,
+ arg->getPath(true).c_str(),
src,
arg );
}
projects / flightgear.git / blobdiff