7 #include "create_wrapper.hpp"
11 WrapperCreator::create_wrapper(Namespace* ns)
13 std::string fromfile = original_file != "" ? original_file : inputfile;
15 if(selected_namespace != "") {
16 ns_prefix = selected_namespace;
23 << " * WARNING: This file is automatically generated from:\n"
24 << " * '" << fromfile << "'\n"
25 << " * DO NOT CHANGE\n"
27 << "#ifndef __" << modulename << "_WRAPPER_H__\n"
28 << "#define __" << modulename << "_WRAPPER_H__\n"
30 << "#include <squirrel.h>\n"
31 << "#include \"wrapper.interface.hpp\"\n"
33 << "namespace Scripting\n"
37 hppout << "void register_" << modulename << "_wrapper(HSQUIRRELVM v);\n"
40 for(std::vector<AtomicType*>::iterator i = ns->types.begin();
41 i != ns->types.end(); ++i) {
42 AtomicType* type = *i;
43 Class* _class = dynamic_cast<Class*> (type);
47 hppout << "void create_squirrel_instance(HSQUIRRELVM v, "
48 << ns_prefix << _class->name
49 << "* object, bool setup_releasehook = false);\n";
59 << " * WARNING: This file is automatically generated from:\n"
60 << " * '" << fromfile << "'\n"
61 << " * DO NOT CHANGE\n"
63 << "#include <config.h>\n"
66 << "#include <assert.h>\n"
67 << "#include <string>\n"
68 << "#include <sstream>\n"
69 << "#include <squirrel.h>\n"
70 << "#include \"squirrel_error.hpp\"\n"
71 << "#include \"wrapper.interface.hpp\"\n"
73 << "namespace Scripting\n"
75 << "namespace Wrapper\n"
79 for(std::vector<AtomicType*>::iterator i = ns->types.begin();
80 i != ns->types.end(); ++i) {
81 AtomicType* type = *i;
82 Class* _class = dynamic_cast<Class*> (type);
84 create_class_wrapper(_class);
86 for(std::vector<Function*>::iterator i = ns->functions.begin();
87 i != ns->functions.end(); ++i) {
88 create_function_wrapper(0, *i);
91 out << "} // end of namespace Wrapper\n";
94 for(std::vector<AtomicType*>::iterator i = ns->types.begin();
95 i != ns->types.end(); ++i) {
96 AtomicType* type = *i;
97 Class* _class = dynamic_cast<Class*> (type);
99 create_squirrel_instance(_class);
102 out << "void register_" << modulename << "_wrapper(HSQUIRRELVM v)\n"
104 << ind << "using namespace Wrapper;\n"
107 create_register_constants_code(ns);
108 create_register_functions_code(ns);
109 create_register_classes_code(ns);
113 << "} // end of namespace Scripting\n"
118 WrapperCreator::create_register_function_code(Function* function, Class* _class)
120 if(function->type == Function::DESTRUCTOR)
123 out << ind << "sq_pushstring(v, \"" << function->name << "\", -1);\n";
124 out << ind << "sq_newclosure(v, &"
125 << (_class != 0 ? _class->name + "_" : "") << function->name
126 << "_wrapper, 0);\n";
127 create_register_slot_code("function", function->name);
132 WrapperCreator::create_register_functions_code(Namespace* ns)
134 for(std::vector<Function*>::iterator i = ns->functions.begin();
135 i != ns->functions.end(); ++i) {
136 Function* function = *i;
137 create_register_function_code(function, 0);
142 WrapperCreator::create_register_classes_code(Namespace* ns)
144 for(std::vector<AtomicType*>::iterator i = ns->types.begin();
145 i != ns->types.end(); ++i) {
146 AtomicType* type = *i;
147 Class* _class = dynamic_cast<Class*> (type);
150 if(_class->super_classes.size() > 0)
153 create_register_class_code(_class);
158 WrapperCreator::create_register_class_code(Class* _class)
160 out << ind << "// Register class " << _class->name << "\n";
161 out << ind << "sq_pushstring(v, \""
162 << _class->name << "\", -1);\n";
164 if(_class->super_classes.size() > 0) {
165 if(_class->super_classes.size() > 1) {
166 std::ostringstream msg;
167 msg << "Multiple inheritance not supported (at class '"
168 << _class->name << "')";
169 throw std::runtime_error(msg.str());
172 out << ind << "sq_pushstring(v, \""
173 << _class->super_classes[0]->name << "\", -1);\n";
174 out << ind << "sq_get(v, -3);\n";
176 out << ind << "if(sq_newclass(v, "
177 << (_class->super_classes.size() > 0 ? "SQTrue" : "SQFalse")
179 out << ind << ind << "std::ostringstream msg;\n";
180 out << ind << ind << "msg << \"Couldn't create new class '"
181 << _class->name << "'\";\n";
182 out << ind << ind << "throw SquirrelError(v, msg.str());\n";
185 for(std::vector<ClassMember*>::iterator i = _class->members.begin();
186 i != _class->members.end(); ++i) {
187 ClassMember* member = *i;
188 if(member->visibility != ClassMember::PUBLIC)
190 Function* function = dynamic_cast<Function*> (member);
192 create_register_function_code(function, _class);
194 Field* field = dynamic_cast<Field*> (member);
196 create_register_constant_code(field);
200 create_register_slot_code("class", _class->name);
203 for(std::vector<Class*>::iterator i = _class->sub_classes.begin();
204 i != _class->sub_classes.end(); ++i) {
206 create_register_class_code(_class);
211 WrapperCreator::create_register_constants_code(Namespace* ns)
213 for(std::vector<Field*>::iterator i = ns->fields.begin();
214 i != ns->fields.end(); ++i) {
216 create_register_constant_code(field);
221 WrapperCreator::create_register_constant_code(Field* field)
223 if(!field->has_const_value)
225 out << ind << "sq_pushstring(v, \"" << field->name << "\", -1);\n";
226 if(field->type->atomic_type == &BasicType::INT) {
227 out << ind << "sq_pushinteger(v, " << field->const_int_value << ");\n";
228 } else if(field->type->atomic_type == &BasicType::FLOAT) {
229 out << ind << "sq_pushfloat(v, " << field->const_float_value << ");\n";
230 } else if(field->type->atomic_type == StringType::instance()) {
231 out << ind << "sq_pushstring(v, \""
232 << field->const_string_value << "\", -1);\n";
234 throw std::runtime_error("Constant is not int, float or string");
236 create_register_slot_code("constant", field->name);
241 WrapperCreator::create_register_slot_code(const std::string& what,
242 const std::string& name)
244 out << ind << "if(SQ_FAILED(sq_createslot(v, -3))) {\n";
245 out << ind << ind << "throw SquirrelError(v, \""
246 << "Couldn't register " << what << " '" << name << "'\");\n";
251 WrapperCreator::create_function_wrapper(Class* _class, Function* function)
253 if(function->type == Function::DESTRUCTOR)
256 std::string ns_prefix;
257 if(selected_namespace != "")
258 ns_prefix = selected_namespace + "::";
259 if(function->type == Function::CONSTRUCTOR)
260 function->name = "constructor";
262 out << "static SQInteger ";
264 out << _class->name << "_";
266 out << function->name << "_wrapper(HSQUIRRELVM vm)\n"
269 if(_class == 0 && function->parameters.empty()
270 && function->return_type.is_void()
271 && function->type != Function::CONSTRUCTOR) {
272 out << ind << "(void) vm;\n";
275 // retrieve pointer to class instance
276 if(_class != 0 && function->type != Function::CONSTRUCTOR) {
277 out << ind << "SQUserPointer data;\n";
278 out << ind << "if(SQ_FAILED(sq_getinstanceup(vm, 1, &data, 0))) {\n";
279 out << ind << ind << "sq_throwerror(vm, _SC(\"'" << function->name << "' called without instance\"));\n";
280 out << ind << ind << "return SQ_ERROR;\n";
282 out << ind << ns_prefix << _class->name << "* _this = reinterpret_cast<" << ns_prefix << _class->name << "*> (data);\n";
286 if(function->custom) {
287 if(function->type != Function::FUNCTION)
288 throw std::runtime_error(
289 "custom not allow constructor+destructor yet");
290 if(function->return_type.atomic_type != SQIntegerType::instance())
291 throw std::runtime_error("custom function has to return SQInteger");
292 if(function->parameters.size() != 1)
293 throw std::runtime_error(
294 "custom function must have 1 HSQUIRRELVM parameter");
296 out << ind << "return ";
301 out << function->name << "(vm);\n";
307 // declare and retrieve arguments
310 for(std::vector<Parameter>::iterator p = function->parameters.begin();
311 p != function->parameters.end(); ++p) {
312 if(i == 0 && p->type.atomic_type == HSQUIRRELVMType::instance()) {
313 out << ind << "HSQUIRRELVM arg0 = vm;\n";
317 snprintf(argname, sizeof(argname), "arg%d", i);
318 prepare_argument(p->type, i + arg_offset, argname);
325 out << ind << "try {\n";
327 if(!function->return_type.is_void()) {
328 function->return_type.write_c_type(out);
329 out << " return_value = ";
332 if(function->type == Function::CONSTRUCTOR) {
333 out << ns_prefix << _class->name << "* _this = new " << ns_prefix;
340 if(function->type == Function::CONSTRUCTOR) {
341 out << _class->name << "(";
343 out << function->name << "(";
345 for(size_t i = 0; i < function->parameters.size(); ++i) {
348 const Parameter param = function->parameters[i];
349 if(param.type.ref == 0 && param.type.pointer == 0) {
350 if(param.type.atomic_type == &BasicType::INT)
351 out << "static_cast<int> (arg" << i << ")";
352 else if(param.type.atomic_type == &BasicType::FLOAT)
353 out << "static_cast<float> (arg" << i << ")";
354 else if(param.type.atomic_type == &BasicType::BOOL)
355 out << "arg" << i << " == SQTrue";
363 if(function->type == Function::CONSTRUCTOR) {
364 out << ind << "if(SQ_FAILED(sq_setinstanceup(vm, 1, _this))) {\n";
365 out << ind << ind << "sq_throwerror(vm, _SC(\"Couldn't setup instance of '" << _class->name << "' class\"));\n";
366 out << ind << ind << "return SQ_ERROR;\n";
368 out << ind << "sq_setreleasehook(vm, 1, "
369 << _class->name << "_release_hook);\n";
372 // push return value back on stack and return
373 if(function->suspend) {
374 if(!function->return_type.is_void()) {
375 std::stringstream msg;
376 msg << "Function '" << function->name << "' declared as suspend"
377 << " but has a return value.";
378 throw std::runtime_error(msg.str());
380 out << ind << ind << "return sq_suspendvm(vm);\n";
381 } else if(function->return_type.is_void()) {
382 out << ind << ind << "return 0;\n";
384 push_to_stack(function->return_type, "return_value");
385 out << ind << ind << "return 1;\n";
389 out << ind << "} catch(std::exception& e) {\n";
390 out << ind << ind << "sq_throwerror(vm, e.what());\n";
391 out << ind << ind << "return SQ_ERROR;\n";
392 out << ind << "} catch(...) {\n";
393 out << ind << ind << "sq_throwerror(vm, _SC(\"Unexpected exception while executing function '" << function->name << "'\"));\n";
394 out << ind << ind << "return SQ_ERROR;\n";
403 WrapperCreator::prepare_argument(const Type& type, size_t index,
404 const std::string& var)
406 if(type.ref > 0 && type.atomic_type != StringType::instance())
407 throw std::runtime_error("References not handled yet");
409 throw std::runtime_error("Pointers not handled yet");
410 if(type.atomic_type == &BasicType::INT) {
411 out << ind << "SQInteger " << var << ";\n";
412 out << ind << "if(SQ_FAILED(sq_getinteger(vm, " << index << ", &" << var << "))) {\n";
413 out << ind << ind << "sq_throwerror(vm, _SC(\"Argument " << (index-1) << " not an integer\"));\n";
414 out << ind << ind << "return SQ_ERROR;\n";
416 } else if(type.atomic_type == &BasicType::FLOAT) {
417 out << ind << "SQFloat " << var << ";\n";
418 out << ind << "if(SQ_FAILED(sq_getfloat(vm, " << index << ", &" << var << "))) {\n";
419 out << ind << ind << "sq_throwerror(vm, _SC(\"Argument " << (index-1) << " not a float\"));\n";
420 out << ind << ind << "return SQ_ERROR;\n";
422 } else if(type.atomic_type == &BasicType::BOOL) {
423 out << ind << "SQBool " << var << ";\n";
424 out << ind << "if(SQ_FAILED(sq_getbool(vm, " << index << ", &" << var << "))) {\n";
425 out << ind << ind << "sq_throwerror(vm, _SC(\"Argument " << (index-1) << " not a bool\"));\n";
426 out << ind << ind << "return SQ_ERROR;\n";
428 } else if(type.atomic_type == StringType::instance()) {
429 out << ind << "const SQChar* " << var << ";\n";
430 out << ind << "if(SQ_FAILED(sq_getstring(vm, " << index << ", &" << var << "))) {\n";
431 out << ind << ind << "sq_throwerror(vm, _SC(\"Argument " << (index-1) << " not a string\"));\n";
432 out << ind << ind << "return SQ_ERROR;\n";
435 std::ostringstream msg;
436 msg << "Type '" << type.atomic_type->name << "' not supported yet.";
437 throw std::runtime_error(msg.str());
442 WrapperCreator::push_to_stack(const Type& type, const std::string& var)
444 if(type.ref > 0 && type.atomic_type != StringType::instance())
445 throw std::runtime_error("References not handled yet");
447 throw std::runtime_error("Pointers not handled yet");
449 if(type.atomic_type == &BasicType::INT) {
450 out << "sq_pushinteger(vm, " << var << ");\n";
451 } else if(type.atomic_type == &BasicType::FLOAT) {
452 out << "sq_pushfloat(vm, " << var << ");\n";
453 } else if(type.atomic_type == &BasicType::BOOL) {
454 out << "sq_pushbool(vm, " << var << ");\n";
455 } else if(type.atomic_type == StringType::instance()) {
456 out << "sq_pushstring(vm, " << var << ".c_str(), "
457 << var << ".size());\n";
459 std::ostringstream msg;
460 msg << "Type '" << type.atomic_type->name << "' not supported yet.";
461 throw std::runtime_error(msg.str());
466 WrapperCreator::create_class_wrapper(Class* _class)
468 create_class_release_hook(_class);
469 for(std::vector<ClassMember*>::iterator i = _class->members.begin();
470 i != _class->members.end(); ++i) {
471 ClassMember* member = *i;
472 if(member->visibility != ClassMember::PUBLIC)
474 Function* function = dynamic_cast<Function*> (member);
477 // don't wrap destructors
478 if(function->type == Function::DESTRUCTOR)
480 create_function_wrapper(_class, function);
485 WrapperCreator::create_squirrel_instance(Class* _class)
487 out << "void create_squirrel_instance(HSQUIRRELVM v, "
488 << ns_prefix << _class->name
489 << "* object, bool setup_releasehook)\n"
491 << ind << "using namespace Wrapper;\n"
493 << ind << "sq_pushroottable(v);\n"
494 << ind << "sq_pushstring(v, \"" << _class->name << "\", -1);\n"
495 << ind << "if(SQ_FAILED(sq_get(v, -2))) {\n"
496 << ind << ind << "std::ostringstream msg;\n"
497 << ind << ind << "msg << \"Couldn't resolved squirrel type '"
498 << _class->name << "'\";\n"
499 << ind << ind << "throw SquirrelError(v, msg.str());\n"
502 << ind << "if(SQ_FAILED(sq_createinstance(v, -1)) || "
503 << "SQ_FAILED(sq_setinstanceup(v, -1, object))) {\n"
504 << ind << ind << "std::ostringstream msg;\n"
505 << ind << ind << "msg << \"Couldn't setup squirrel instance for "
506 << "object of type '" << _class->name << "'\";\n"
507 << ind << ind << "throw SquirrelError(v, msg.str());\n"
509 << ind << "sq_remove(v, -2); // remove object name\n"
511 << ind << "if(setup_releasehook) {\n"
512 << ind << ind << "sq_setreleasehook(v, -1, "
513 << _class->name << "_release_hook);\n"
516 << ind << "sq_remove(v, -2); // remove root table\n"
522 WrapperCreator::create_class_release_hook(Class* _class)
524 out << "static SQInteger " << _class->name << "_release_hook(SQUserPointer ptr, SQInteger )\n"
526 << ind << ns_prefix << _class->name
527 << "* _this = reinterpret_cast<" << ns_prefix << _class->name
529 << ind << "delete _this;\n"
530 << ind << "return 0;\n"