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godot/modules/gdscript/gd_script.cpp

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/*************************************************************************/
/* gd_script.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "gd_script.h"
#include "globals.h"
#include "global_constants.h"
#include "gd_compiler.h"
#include "os/file_access.h"
#include "io/file_access_encrypted.h"
/* TODO:
*populate globals
*do checks as close to debugger as possible (but don't do debugger)
*const check plz
*check arguments and default arguments in GDFunction
-get property list in instance?
*missing opcodes
-const checks
-make thread safe
*/
Variant *GDFunction::_get_variant(int p_address,GDInstance *p_instance,GDScript *p_script,Variant &self, Variant *p_stack,String& r_error) const{
int address = p_address&ADDR_MASK;
//sequential table (jump table generated by compiler)
switch((p_address&ADDR_TYPE_MASK)>>ADDR_BITS) {
case ADDR_TYPE_SELF: {
if (!p_instance) {
r_error="Cannot access self without instance.";
return NULL;
}
return &self;
} break;
case ADDR_TYPE_CLASS: {
return &p_script->_static_ref;
} break;
case ADDR_TYPE_MEMBER: {
//member indexing is O(1)
if (!p_instance) {
r_error="Cannot access member without instance.";
return NULL;
}
return &p_instance->members[address];
} break;
case ADDR_TYPE_CLASS_CONSTANT: {
//todo change to index!
GDScript *o=p_script;
ERR_FAIL_INDEX_V(address,_global_names_count,NULL);
const StringName *sn = &_global_names_ptr[address];
while(o) {
GDScript *s=o;
while(s) {
Map<StringName,Variant>::Element *E=s->constants.find(*sn);
if (E) {
return &E->get();
}
s=s->_base;
}
o=o->_owner;
}
ERR_EXPLAIN("GDCompiler bug..");
ERR_FAIL_V(NULL);
} break;
case ADDR_TYPE_LOCAL_CONSTANT: {
ERR_FAIL_INDEX_V(address,_constant_count,NULL);
return &_constants_ptr[address];
} break;
case ADDR_TYPE_STACK:
case ADDR_TYPE_STACK_VARIABLE: {
ERR_FAIL_INDEX_V(address,_stack_size,NULL);
return &p_stack[address];
} break;
case ADDR_TYPE_GLOBAL: {
ERR_FAIL_INDEX_V(address,GDScriptLanguage::get_singleton()->get_global_array_size(),NULL);
return &GDScriptLanguage::get_singleton()->get_global_array()[address];
} break;
case ADDR_TYPE_NIL: {
return &nil;
} break;
}
ERR_EXPLAIN("Bad Code! (Addressing Mode)");
ERR_FAIL_V(NULL);
return NULL;
}
String GDFunction::_get_call_error(const Variant::CallError& p_err, const String& p_where,const Variant**argptrs) const {
String err_text;
if (p_err.error==Variant::CallError::CALL_ERROR_INVALID_ARGUMENT) {
int errorarg=p_err.argument;
err_text="Invalid type in "+p_where+". Cannot convert argument "+itos(errorarg+1)+" from "+Variant::get_type_name(argptrs[errorarg]->get_type())+" to "+Variant::get_type_name(p_err.expected)+".";
} else if (p_err.error==Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS) {
err_text="Invalid call to "+p_where+". Expected "+itos(p_err.argument)+" arguments.";
} else if (p_err.error==Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS) {
err_text="Invalid call to "+p_where+". Expected "+itos(p_err.argument)+" arguments.";
} else if (p_err.error==Variant::CallError::CALL_ERROR_INVALID_METHOD) {
err_text="Invalid call. Nonexistent "+p_where+".";
} else if (p_err.error==Variant::CallError::CALL_ERROR_INSTANCE_IS_NULL) {
err_text="Attempt to call "+p_where+" on a null instance.";
} else {
err_text="Bug, call error: #"+itos(p_err.error);
}
return err_text;
}
static String _get_var_type(const Variant* p_type) {
String basestr;
if (p_type->get_type()==Variant::OBJECT) {
Object *bobj = *p_type;
if (!bobj) {
basestr = "null instance";
} else {
#ifdef DEBUG_ENABLED
if (ObjectDB::instance_validate(bobj)) {
if (bobj->get_script_instance())
basestr= bobj->get_type()+" ("+bobj->get_script_instance()->get_script()->get_path().get_file()+")";
else
basestr = bobj->get_type();
} else {
basestr="previously freed instance";
}
#else
basestr="Object";
#endif
}
} else {
basestr = Variant::get_type_name(p_type->get_type());
}
return basestr;
}
Variant GDFunction::call(GDInstance *p_instance, const Variant **p_args, int p_argcount, Variant::CallError& r_err, CallState *p_state) {
if (!_code_ptr) {
return Variant();
}
r_err.error=Variant::CallError::CALL_OK;
Variant self;
Variant retvalue;
Variant *stack = NULL;
Variant **call_args;
int defarg=0;
#ifdef DEBUG_ENABLED
//GDScriptLanguage::get_singleton()->calls++;
#endif
uint32_t alloca_size=0;
GDScript *_class;
int ip=0;
int line=_initial_line;
if (p_state) {
//use existing (supplied) state (yielded)
stack=(Variant*)p_state->stack.ptr();
call_args=(Variant**)&p_state->stack[sizeof(Variant)*p_state->stack_size];
line=p_state->line;
ip=p_state->ip;
alloca_size=p_state->stack.size();
_class=p_state->_class;
p_instance=p_state->instance;
defarg=p_state->defarg;
self=p_state->self;
//stack[p_state->result_pos]=p_state->result; //assign stack with result
} else {
if (p_argcount!=_argument_count) {
if (p_argcount>_argument_count) {
r_err.error=Variant::CallError::CALL_ERROR_TOO_MANY_ARGUMENTS;
r_err.argument=_argument_count;
return Variant();
} else if (p_argcount < _argument_count - _default_arg_count) {
r_err.error=Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_err.argument=_argument_count - _default_arg_count;
return Variant();
} else {
defarg=_argument_count-p_argcount;
}
}
alloca_size = sizeof(Variant*)*_call_size + sizeof(Variant)*_stack_size;
if (alloca_size) {
uint8_t *aptr = (uint8_t*)alloca(alloca_size);
if (_stack_size) {
stack=(Variant*)aptr;
for(int i=0;i<p_argcount;i++)
memnew_placement(&stack[i],Variant(*p_args[i]));
for(int i=p_argcount;i<_stack_size;i++)
memnew_placement(&stack[i],Variant);
} else {
stack=NULL;
}
if (_call_size) {
call_args = (Variant**)&aptr[sizeof(Variant)*_stack_size];
} else {
call_args=NULL;
}
} else {
stack=NULL;
call_args=NULL;
}
if (p_instance) {
if (p_instance->base_ref && static_cast<Reference*>(p_instance->owner)->is_referenced()) {
self=REF(static_cast<Reference*>(p_instance->owner));
} else {
self=p_instance->owner;
}
_class=p_instance->script.ptr();
} else {
_class=_script;
}
}
String err_text;
#ifdef DEBUG_ENABLED
if (ScriptDebugger::get_singleton())
GDScriptLanguage::get_singleton()->enter_function(p_instance,this,stack,&ip,&line);
#define CHECK_SPACE(m_space)\
ERR_BREAK((ip+m_space)>_code_size)
#define GET_VARIANT_PTR(m_v,m_code_ofs) \
Variant *m_v; \
m_v = _get_variant(_code_ptr[ip+m_code_ofs],p_instance,_class,self,stack,err_text);\
if (!m_v)\
break;
#else
#define CHECK_SPACE(m_space)
#define GET_VARIANT_PTR(m_v,m_code_ofs) \
Variant *m_v; \
m_v = _get_variant(_code_ptr[ip+m_code_ofs],p_instance,_class,self,stack,err_text);
#endif
bool exit_ok=false;
while(ip<_code_size) {
int last_opcode=_code_ptr[ip];
switch(_code_ptr[ip]) {
case OPCODE_OPERATOR: {
CHECK_SPACE(5);
bool valid;
Variant::Operator op = (Variant::Operator)_code_ptr[ip+1];
ERR_BREAK(op>=Variant::OP_MAX);
GET_VARIANT_PTR(a,2);
GET_VARIANT_PTR(b,3);
GET_VARIANT_PTR(dst,4);
#ifdef DEBUG_ENABLED
Variant ret;
Variant::evaluate(op,*a,*b,ret,valid);
#else
Variant::evaluate(op,*a,*b,*dst,valid);
#endif
if (!valid) {
#ifdef DEBUG_ENABLED
if (ret.get_type()==Variant::STRING) {
//return a string when invalid with the error
err_text=ret;
err_text += " in operator '"+Variant::get_operator_name(op)+"'.";
} else {
err_text="Invalid operands '"+Variant::get_type_name(a->get_type())+"' and '"+Variant::get_type_name(b->get_type())+"' in operator '"+Variant::get_operator_name(op)+"'.";
}
#endif
break;
}
#ifdef DEBUG_ENABLED
*dst=ret;
#endif
ip+=5;
} continue;
case OPCODE_EXTENDS_TEST: {
CHECK_SPACE(4);
GET_VARIANT_PTR(a,1);
GET_VARIANT_PTR(b,2);
GET_VARIANT_PTR(dst,3);
#ifdef DEBUG_ENABLED
if (a->get_type()!=Variant::OBJECT || a->operator Object*()==NULL) {
err_text="Left operand of 'extends' is not an instance of anything.";
break;
}
if (b->get_type()!=Variant::OBJECT || b->operator Object*()==NULL) {
err_text="Right operand of 'extends' is not a class.";
break;
}
#endif
Object *obj_A = *a;
Object *obj_B = *b;
GDScript *scr_B = obj_B->cast_to<GDScript>();
bool extends_ok=false;
if (scr_B) {
//if B is a script, the only valid condition is that A has an instance which inherits from the script
//in other situation, this shoul return false.
if (obj_A->get_script_instance() && obj_A->get_script_instance()->get_language()==GDScriptLanguage::get_singleton()) {
GDInstance *ins = static_cast<GDInstance*>(obj_A->get_script_instance());
GDScript *cmp = ins->script.ptr();
//bool found=false;
while(cmp) {
if (cmp==scr_B) {
//inherits from script, all ok
extends_ok=true;
break;
}
cmp=cmp->_base;
}
}
} else {
GDNativeClass *nc= obj_B->cast_to<GDNativeClass>();
if (!nc) {
err_text="Right operand of 'extends' is not a class (type: '"+obj_B->get_type()+"').";
break;
}
extends_ok=ObjectTypeDB::is_type(obj_A->get_type_name(),nc->get_name());
}
*dst=extends_ok;
ip+=4;
} continue;
case OPCODE_SET: {
CHECK_SPACE(3);
GET_VARIANT_PTR(dst,1);
GET_VARIANT_PTR(index,2);
GET_VARIANT_PTR(value,3);
bool valid;
dst->set(*index,*value,&valid);
if (!valid) {
String v = index->operator String();
if (v!="") {
v="'"+v+"'";
} else {
v="of type '"+_get_var_type(index)+"'";
}
err_text="Invalid set index "+v+" (on base: '"+_get_var_type(dst)+"').";
break;
}
ip+=4;
} continue;
case OPCODE_GET: {
CHECK_SPACE(3);
GET_VARIANT_PTR(src,1);
GET_VARIANT_PTR(index,2);
GET_VARIANT_PTR(dst,3);
bool valid;
#ifdef DEBUG_ENABLED
//allow better error message in cases where src and dst are the same stack position
Variant ret = src->get(*index,&valid);
#else
*dst = src->get(*index,&valid);
#endif
if (!valid) {
String v = index->operator String();
if (v!="") {
v="'"+v+"'";
} else {
v="of type '"+_get_var_type(index)+"'";
}
err_text="Invalid get index "+v+" (on base: '"+_get_var_type(src)+"').";
break;
}
#ifdef DEBUG_ENABLED
*dst=ret;
#endif
ip+=4;
} continue;
case OPCODE_SET_NAMED: {
CHECK_SPACE(3);
GET_VARIANT_PTR(dst,1);
GET_VARIANT_PTR(value,3);
int indexname = _code_ptr[ip+2];
ERR_BREAK(indexname<0 || indexname>=_global_names_count);
const StringName *index = &_global_names_ptr[indexname];
bool valid;
dst->set_named(*index,*value,&valid);
if (!valid) {
String err_type;
err_text="Invalid set index '"+String(*index)+"' (on base: '"+_get_var_type(dst)+"').";
break;
}
ip+=4;
} continue;
case OPCODE_GET_NAMED: {
CHECK_SPACE(3);
GET_VARIANT_PTR(src,1);
GET_VARIANT_PTR(dst,3);
int indexname = _code_ptr[ip+2];
ERR_BREAK(indexname<0 || indexname>=_global_names_count);
const StringName *index = &_global_names_ptr[indexname];
bool valid;
#ifdef DEBUG_ENABLED
//allow better error message in cases where src and dst are the same stack position
Variant ret = src->get_named(*index,&valid);
#else
*dst = src->get_named(*index,&valid);
#endif
if (!valid) {
if (src->has_method(*index)) {
err_text="Invalid get index '"+index->operator String()+"' (on base: '"+_get_var_type(src)+"'). Did you mean '."+index->operator String()+"()' ?";
} else {
err_text="Invalid get index '"+index->operator String()+"' (on base: '"+_get_var_type(src)+"').";
}
break;
}
#ifdef DEBUG_ENABLED
*dst=ret;
#endif
ip+=4;
} continue;
case OPCODE_ASSIGN: {
CHECK_SPACE(3);
GET_VARIANT_PTR(dst,1);
GET_VARIANT_PTR(src,2);
*dst = *src;
ip+=3;
} continue;
case OPCODE_ASSIGN_TRUE: {
CHECK_SPACE(2);
GET_VARIANT_PTR(dst,1);
*dst = true;
ip+=2;
} continue;
case OPCODE_ASSIGN_FALSE: {
CHECK_SPACE(2);
GET_VARIANT_PTR(dst,1);
*dst = false;
ip+=2;
} continue;
case OPCODE_CONSTRUCT: {
CHECK_SPACE(2);
Variant::Type t=Variant::Type(_code_ptr[ip+1]);
int argc=_code_ptr[ip+2];
CHECK_SPACE(argc+2);
Variant **argptrs = call_args;
for(int i=0;i<argc;i++) {
GET_VARIANT_PTR(v,3+i);
argptrs[i]=v;
}
GET_VARIANT_PTR(dst,3+argc);
Variant::CallError err;
*dst = Variant::construct(t,(const Variant**)argptrs,argc,err);
if (err.error!=Variant::CallError::CALL_OK) {
err_text=_get_call_error(err,"'"+Variant::get_type_name(t)+"' constructor",(const Variant**)argptrs);
break;
}
ip+=4+argc;
//construct a basic type
} continue;
case OPCODE_CONSTRUCT_ARRAY: {
CHECK_SPACE(1);
int argc=_code_ptr[ip+1];
Array array(true); //arrays are always shared
array.resize(argc);
CHECK_SPACE(argc+2);
for(int i=0;i<argc;i++) {
GET_VARIANT_PTR(v,2+i);
array[i]=*v;
}
GET_VARIANT_PTR(dst,2+argc);
*dst=array;
ip+=3+argc;
} continue;
case OPCODE_CONSTRUCT_DICTIONARY: {
CHECK_SPACE(1);
int argc=_code_ptr[ip+1];
Dictionary dict(true); //arrays are always shared
CHECK_SPACE(argc*2+2);
for(int i=0;i<argc;i++) {
GET_VARIANT_PTR(k,2+i*2+0);
GET_VARIANT_PTR(v,2+i*2+1);
dict[*k]=*v;
}
GET_VARIANT_PTR(dst,2+argc*2);
*dst=dict;
ip+=3+argc*2;
} continue;
case OPCODE_CALL_RETURN:
case OPCODE_CALL: {
CHECK_SPACE(4);
bool call_ret = _code_ptr[ip]==OPCODE_CALL_RETURN;
int argc=_code_ptr[ip+1];
GET_VARIANT_PTR(base,2);
int nameg=_code_ptr[ip+3];
ERR_BREAK(nameg<0 || nameg>=_global_names_count);
const StringName *methodname = &_global_names_ptr[nameg];
ERR_BREAK(argc<0);
ip+=4;
CHECK_SPACE(argc+1);
Variant **argptrs = call_args;
for(int i=0;i<argc;i++) {
GET_VARIANT_PTR(v,i);
argptrs[i]=v;
}
Variant::CallError err;
if (call_ret) {
GET_VARIANT_PTR(ret,argc);
*ret = base->call(*methodname,(const Variant**)argptrs,argc,err);
} else {
base->call(*methodname,(const Variant**)argptrs,argc,err);
}
if (err.error!=Variant::CallError::CALL_OK) {
String methodstr = *methodname;
String basestr = _get_var_type(base);
if (methodstr=="call") {
if (argc>=1) {
methodstr=String(*argptrs[0])+" (via call)";
if (err.error==Variant::CallError::CALL_ERROR_INVALID_ARGUMENT) {
err.argument-=1;
}
}
} if (methodstr=="free") {
if (err.error==Variant::CallError::CALL_ERROR_INVALID_METHOD) {
if (base->is_ref()) {
err_text="Attempted to free a reference.";
break;
} else if (base->get_type()==Variant::OBJECT) {
err_text="Attempted to free a locked object (calling or emitting).";
break;
}
}
}
err_text=_get_call_error(err,"function '"+methodstr+"' in base '"+basestr+"'",(const Variant**)argptrs);
break;
}
//_call_func(NULL,base,*methodname,ip,argc,p_instance,stack);
ip+=argc+1;
} continue;
case OPCODE_CALL_BUILT_IN: {
CHECK_SPACE(4);
GDFunctions::Function func = GDFunctions::Function(_code_ptr[ip+1]);
int argc=_code_ptr[ip+2];
ERR_BREAK(argc<0);
ip+=3;
CHECK_SPACE(argc+1);
Variant **argptrs = call_args;
for(int i=0;i<argc;i++) {
GET_VARIANT_PTR(v,i);
argptrs[i]=v;
}
GET_VARIANT_PTR(dst,argc);
Variant::CallError err;
GDFunctions::call(func,(const Variant**)argptrs,argc,*dst,err);
if (err.error!=Variant::CallError::CALL_OK) {
String methodstr = GDFunctions::get_func_name(func);
err_text=_get_call_error(err,"built-in function '"+methodstr+"'",(const Variant**)argptrs);
break;
}
ip+=argc+1;
} continue;
case OPCODE_CALL_SELF: {
} break;
case OPCODE_CALL_SELF_BASE: {
CHECK_SPACE(2);
int self_fun = _code_ptr[ip+1];
#ifdef DEBUG_ENABLED
if (self_fun<0 || self_fun>=_global_names_count) {
err_text="compiler bug, function name not found";
break;
}
#endif
const StringName *methodname = &_global_names_ptr[self_fun];
int argc=_code_ptr[ip+2];
CHECK_SPACE(2+argc+1);
Variant **argptrs = call_args;
for(int i=0;i<argc;i++) {
GET_VARIANT_PTR(v,i+3);
argptrs[i]=v;
}
GET_VARIANT_PTR(dst,argc+3);
const GDScript *gds = _script;
const Map<StringName,GDFunction>::Element *E=NULL;
while (gds->base.ptr()) {
gds=gds->base.ptr();
E=gds->member_functions.find(*methodname);
if (E)
break;
}
Variant::CallError err;
if (E) {
*dst=((GDFunction*)&E->get())->call(p_instance,(const Variant**)argptrs,argc,err);
} else if (gds->native.ptr()) {
if (*methodname!=GDScriptLanguage::get_singleton()->strings._init) {
MethodBind *mb = ObjectTypeDB::get_method(gds->native->get_name(),*methodname);
if (!mb) {
err.error=Variant::CallError::CALL_ERROR_INVALID_METHOD;
} else {
*dst=mb->call(p_instance->owner,(const Variant**)argptrs,argc,err);
}
} else {
err.error=Variant::CallError::CALL_OK;
}
} else {
if (*methodname!=GDScriptLanguage::get_singleton()->strings._init) {
err.error=Variant::CallError::CALL_ERROR_INVALID_METHOD;
} else {
err.error=Variant::CallError::CALL_OK;
}
}
if (err.error!=Variant::CallError::CALL_OK) {
String methodstr = *methodname;
err_text=_get_call_error(err,"function '"+methodstr+"'",(const Variant**)argptrs);
break;
}
ip+=4+argc;
} continue;
case OPCODE_YIELD:
case OPCODE_YIELD_SIGNAL: {
int ipofs=1;
if (_code_ptr[ip]==OPCODE_YIELD_SIGNAL) {
CHECK_SPACE(4);
ipofs+=2;
} else {
CHECK_SPACE(2);
}
Ref<GDFunctionState> gdfs = memnew( GDFunctionState );
gdfs->function=this;
gdfs->state.stack.resize(alloca_size);
//copy variant stack
for(int i=0;i<_stack_size;i++) {
memnew_placement(&gdfs->state.stack[sizeof(Variant)*i],Variant(stack[i]));
}
gdfs->state.stack_size=_stack_size;
gdfs->state.self=self;
gdfs->state.alloca_size=alloca_size;
gdfs->state._class=_class;
gdfs->state.ip=ip+ipofs;
gdfs->state.line=line;
//gdfs->state.result_pos=ip+ipofs-1;
gdfs->state.defarg=defarg;
gdfs->state.instance=p_instance;
gdfs->function=this;
retvalue=gdfs;
if (_code_ptr[ip]==OPCODE_YIELD_SIGNAL) {
GET_VARIANT_PTR(argobj,1);
GET_VARIANT_PTR(argname,2);
//do the oneshot connect
if (argobj->get_type()!=Variant::OBJECT) {
err_text="First argument of yield() not of type object.";
break;
}
if (argname->get_type()!=Variant::STRING) {
err_text="Second argument of yield() not a string (for signal name).";
break;
}
Object *obj=argobj->operator Object *();
String signal = argname->operator String();
#ifdef DEBUG_ENABLED
if (!obj) {
err_text="First argument of yield() is null.";
break;
}
if (ScriptDebugger::get_singleton()) {
if (!ObjectDB::instance_validate(obj)) {
err_text="First argument of yield() is a previously freed instance.";
break;
}
}
if (signal.length()==0) {
err_text="Second argument of yield() is an empty string (for signal name).";
break;
}
#endif
Error err = obj->connect(signal,gdfs.ptr(),"_signal_callback",varray(gdfs),Object::CONNECT_ONESHOT);
if (err!=OK) {
err_text="Error connecting to signal: "+signal+" during yield().";
break;
}
}
exit_ok=true;
} break;
case OPCODE_YIELD_RESUME: {
CHECK_SPACE(2);
if (!p_state) {
err_text=("Invalid Resume (bug?)");
break;
}
GET_VARIANT_PTR(result,1);
*result=p_state->result;
ip+=2;
} continue;
case OPCODE_JUMP: {
CHECK_SPACE(2);
int to = _code_ptr[ip+1];
ERR_BREAK(to<0 || to>_code_size);
ip=to;
} continue;
case OPCODE_JUMP_IF: {
CHECK_SPACE(3);
GET_VARIANT_PTR(test,1);
bool valid;
bool result = test->booleanize(valid);
#ifdef DEBUG_ENABLED
if (!valid) {
err_text="cannot evaluate conditional expression of type: "+Variant::get_type_name(test->get_type());
break;
}
#endif
if (result) {
int to = _code_ptr[ip+2];
ERR_BREAK(to<0 || to>_code_size);
ip=to;
continue;
}
ip+=3;
} continue;
case OPCODE_JUMP_IF_NOT: {
CHECK_SPACE(3);
GET_VARIANT_PTR(test,1);
bool valid;
bool result = test->booleanize(valid);
#ifdef DEBUG_ENABLED
if (!valid) {
err_text="cannot evaluate conditional expression of type: "+Variant::get_type_name(test->get_type());
break;
}
#endif
if (!result) {
int to = _code_ptr[ip+2];
ERR_BREAK(to<0 || to>_code_size);
ip=to;
continue;
}
ip+=3;
} continue;
case OPCODE_JUMP_TO_DEF_ARGUMENT: {
CHECK_SPACE(2);
ip=_default_arg_ptr[defarg];
} continue;
case OPCODE_RETURN: {
CHECK_SPACE(2);
GET_VARIANT_PTR(r,1);
retvalue=*r;
exit_ok=true;
} break;
case OPCODE_ITERATE_BEGIN: {
CHECK_SPACE(8); //space for this an regular iterate
GET_VARIANT_PTR(counter,1);
GET_VARIANT_PTR(container,2);
bool valid;
if (!container->iter_init(*counter,valid)) {
if (!valid) {
err_text="Unable to iterate on object of type "+Variant::get_type_name(container->get_type())+"'.";
break;
}
int jumpto=_code_ptr[ip+3];
ERR_BREAK(jumpto<0 || jumpto>_code_size);
ip=jumpto;
continue;
}
GET_VARIANT_PTR(iterator,4);
*iterator=container->iter_get(*counter,valid);
if (!valid) {
err_text="Unable to obtain iterator object of type "+Variant::get_type_name(container->get_type())+"'.";
break;
}
ip+=5; //skip regular iterate which is always next
} continue;
case OPCODE_ITERATE: {
CHECK_SPACE(4);
GET_VARIANT_PTR(counter,1);
GET_VARIANT_PTR(container,2);
bool valid;
if (!container->iter_next(*counter,valid)) {
if (!valid) {
err_text="Unable to iterate on object of type "+Variant::get_type_name(container->get_type())+"' (type changed since first iteration?).";
break;
}
int jumpto=_code_ptr[ip+3];
ERR_BREAK(jumpto<0 || jumpto>_code_size);
ip=jumpto;
continue;
}
GET_VARIANT_PTR(iterator,4);
*iterator=container->iter_get(*counter,valid);
if (!valid) {
err_text="Unable to obtain iterator object of type "+Variant::get_type_name(container->get_type())+"' (but was obtained on first iteration?).";
break;
}
ip+=5; //loop again
} continue;
case OPCODE_ASSERT: {
CHECK_SPACE(2);
GET_VARIANT_PTR(test,1);
#ifdef DEBUG_ENABLED
bool valid;
bool result = test->booleanize(valid);
if (!valid) {
err_text="cannot evaluate conditional expression of type: "+Variant::get_type_name(test->get_type());
break;
}
if (!result) {
err_text="Assertion failed.";
break;
}
#endif
ip+=2;
} continue;
case OPCODE_LINE: {
CHECK_SPACE(2);
line=_code_ptr[ip+1];
ip+=2;
if (ScriptDebugger::get_singleton()) {
// line
bool do_break=false;
if (ScriptDebugger::get_singleton()->get_lines_left()>0) {
if (ScriptDebugger::get_singleton()->get_depth()<=0)
ScriptDebugger::get_singleton()->set_lines_left( ScriptDebugger::get_singleton()->get_lines_left() -1 );
if (ScriptDebugger::get_singleton()->get_lines_left()<=0)
do_break=true;
}
if (ScriptDebugger::get_singleton()->is_breakpoint(line,source))
do_break=true;
if (do_break) {
GDScriptLanguage::get_singleton()->debug_break("Breakpoint",true);
}
ScriptDebugger::get_singleton()->line_poll();
}
} continue;
case OPCODE_END: {
exit_ok=true;
break;
} break;
default: {
err_text="Illegal opcode "+itos(_code_ptr[ip])+" at address "+itos(ip);
} break;
}
if (exit_ok)
break;
//error
// function, file, line, error, explanation
String err_file;
if (p_instance)
err_file=p_instance->script->path;
else if (_class)
err_file=_class->path;
if (err_file=="")
err_file="<built-in>";
String err_func = name;
if (p_instance && p_instance->script->name!="")
err_func=p_instance->script->name+"."+err_func;
int err_line=line;
if (err_text=="") {
err_text="Internal Script Error! - opcode #"+itos(last_opcode)+" (report please).";
}
if (!GDScriptLanguage::get_singleton()->debug_break(err_text,false)) {
// debugger break did not happen
_err_print_error(err_func.utf8().get_data(),err_file.utf8().get_data(),err_line,err_text.utf8().get_data());
}
break;
}
if (ScriptDebugger::get_singleton())
GDScriptLanguage::get_singleton()->exit_function();
if (_stack_size) {
//free stack
for(int i=0;i<_stack_size;i++)
stack[i].~Variant();
}
return retvalue;
}
const int* GDFunction::get_code() const {
return _code_ptr;
}
int GDFunction::get_code_size() const{
return _code_size;
}
Variant GDFunction::get_constant(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx,constants.size(),"<errconst>");
return constants[p_idx];
}
StringName GDFunction::get_global_name(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx,global_names.size(),"<errgname>");
return global_names[p_idx];
}
int GDFunction::get_default_argument_count() const {
return default_arguments.size();
}
int GDFunction::get_default_argument_addr(int p_arg) const{
ERR_FAIL_INDEX_V(p_arg,default_arguments.size(),-1);
return default_arguments[p_arg];
}
StringName GDFunction::get_name() const {
return name;
}
int GDFunction::get_max_stack_size() const {
return _stack_size;
}
struct _GDFKC {
int order;
List<int> pos;
};
struct _GDFKCS {
int order;
StringName id;
int pos;
bool operator<(const _GDFKCS &p_r) const {
return order<p_r.order;
}
};
void GDFunction::debug_get_stack_member_state(int p_line,List<Pair<StringName,int> > *r_stackvars) const {
int oc=0;
Map<StringName,_GDFKC> sdmap;
for( const List<StackDebug>::Element *E=stack_debug.front();E;E=E->next()) {
const StackDebug &sd=E->get();
if (sd.line>p_line)
break;
if (sd.added) {
if (!sdmap.has(sd.identifier)) {
_GDFKC d;
d.order=oc++;
d.pos.push_back(sd.pos);
sdmap[sd.identifier]=d;
} else {
sdmap[sd.identifier].pos.push_back(sd.pos);
}
} else {
ERR_CONTINUE(!sdmap.has(sd.identifier));
sdmap[sd.identifier].pos.pop_back();
if (sdmap[sd.identifier].pos.empty())
sdmap.erase(sd.identifier);
}
}
List<_GDFKCS> stackpositions;
for(Map<StringName,_GDFKC>::Element *E=sdmap.front();E;E=E->next() ) {
_GDFKCS spp;
spp.id=E->key();
spp.order=E->get().order;
spp.pos=E->get().pos.back()->get();
stackpositions.push_back(spp);
}
stackpositions.sort();
for(List<_GDFKCS>::Element *E=stackpositions.front();E;E=E->next()) {
Pair<StringName,int> p;
p.first=E->get().id;
p.second=E->get().pos;
r_stackvars->push_back(p);
}
}
#if 0
void GDFunction::clear() {
name=StringName();
constants.clear();
_stack_size=0;
code.clear();
_constants_ptr=NULL;
_constant_count=0;
_global_names_ptr=NULL;
_global_names_count=0;
_code_ptr=NULL;
_code_size=0;
}
#endif
GDFunction::GDFunction() {
_stack_size=0;
_call_size=0;
name="<anonymous>";
#ifdef DEBUG_ENABLED
_func_cname=NULL;
#endif
}
/////////////////////
Variant GDFunctionState::_signal_callback(const Variant** p_args, int p_argcount, Variant::CallError& r_error) {
Variant arg;
r_error.error=Variant::CallError::CALL_OK;
ERR_FAIL_COND_V(!function,Variant());
if (p_argcount==0) {
r_error.error=Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
r_error.argument=1;
return Variant();
} else if (p_argcount==1) {
//noooneee
} else if (p_argcount==2) {
arg=*p_args[0];
} else {
Array extra_args;
for(int i=0;i<p_argcount-1;i++) {
extra_args.push_back(*p_args[i]);
}
arg=extra_args;
}
Ref<GDFunctionState> self = *p_args[p_argcount-1];
if (self.is_null()) {
r_error.error=Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
r_error.argument=p_argcount-1;
r_error.expected=Variant::OBJECT;
return Variant();
}
state.result=arg;
Variant ret = function->call(NULL,NULL,0,r_error,&state);
function=NULL; //cleaned up;
state.result=Variant();
return ret;
}
bool GDFunctionState::is_valid() const {
return function!=NULL;
}
Variant GDFunctionState::resume(const Variant& p_arg) {
ERR_FAIL_COND_V(!function,Variant());
state.result=p_arg;
Variant::CallError err;
Variant ret = function->call(NULL,NULL,0,err,&state);
function=NULL; //cleaned up;
state.result=Variant();
return ret;
}
void GDFunctionState::_bind_methods() {
ObjectTypeDB::bind_method(_MD("resume:var","arg"),&GDFunctionState::resume,DEFVAL(Variant()));
ObjectTypeDB::bind_method(_MD("is_valid"),&GDFunctionState::is_valid);
ObjectTypeDB::bind_native_method(METHOD_FLAGS_DEFAULT,"_signal_callback",&GDFunctionState::_signal_callback,MethodInfo("_signal_callback"));
}
GDFunctionState::GDFunctionState() {
function=NULL;
}
GDFunctionState::~GDFunctionState() {
if (function!=NULL) {
//never called, deinitialize stack
for(int i=0;i<state.stack_size;i++) {
Variant *v=(Variant*)&state.stack[sizeof(Variant)*i];
v->~Variant();
}
}
}
///////////////////////////
GDNativeClass::GDNativeClass(const StringName& p_name) {
name=p_name;
}
/*void GDNativeClass::call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount){
}*/
bool GDNativeClass::_get(const StringName& p_name,Variant &r_ret) const {
bool ok;
int v = ObjectTypeDB::get_integer_constant(name, p_name, &ok);
if (ok) {
r_ret=v;
return true;
} else {
return false;
}
}
void GDNativeClass::_bind_methods() {
ObjectTypeDB::bind_method(_MD("new"),&GDNativeClass::_new);
}
Variant GDNativeClass::_new() {
Object *o = instance();
if (!o) {
ERR_EXPLAIN("Class type: '"+String(name)+"' is not instantiable.");
ERR_FAIL_COND_V(!o,Variant());
}
Reference *ref = o->cast_to<Reference>();
if (ref) {
return REF(ref);
} else {
return o;
}
}
Object *GDNativeClass::instance() {
return ObjectTypeDB::instance(name);
}
GDInstance* GDScript::_create_instance(const Variant** p_args,int p_argcount,Object *p_owner,bool p_isref) {
/* STEP 1, CREATE */
GDInstance* instance = memnew( GDInstance );
instance->base_ref=p_isref;
instance->members.resize(member_indices.size());
instance->script=Ref<GDScript>(this);
instance->owner=p_owner;
instance->owner->set_script_instance(instance);
/* STEP 2, INITIALIZE AND CONSRTUCT */
instances.insert(instance->owner);
Variant::CallError err;
initializer->call(instance,p_args,p_argcount,err);
if (err.error!=Variant::CallError::CALL_OK) {
instance->script=Ref<GDScript>();
instance->owner->set_script_instance(NULL);
instances.erase(p_owner);
ERR_FAIL_COND_V(err.error!=Variant::CallError::CALL_OK, NULL); //error consrtucting
}
//@TODO make thread safe
return instance;
}
Variant GDScript::_new(const Variant** p_args,int p_argcount,Variant::CallError& r_error) {
/* STEP 1, CREATE */
r_error.error=Variant::CallError::CALL_OK;
REF ref;
Object *owner=NULL;
GDScript *_baseptr=this;
while (_baseptr->_base) {
_baseptr=_baseptr->_base;
}
if (_baseptr->native.ptr()) {
owner=_baseptr->native->instance();
} else {
owner=memnew( Reference ); //by default, no base means use reference
}
Reference *r=owner->cast_to<Reference>();
if (r) {
ref=REF(r);
}
GDInstance* instance = _create_instance(p_args,p_argcount,owner,r!=NULL);
if (!instance) {
if (ref.is_null()) {
memdelete(owner); //no owner, sorry
}
return Variant();
}
if (ref.is_valid()) {
return ref;
} else {
return owner;
}
}
bool GDScript::can_instance() const {
//return valid; //any script in GDscript can instance
return valid || (!tool && !ScriptServer::is_scripting_enabled());
}
StringName GDScript::get_instance_base_type() const {
if (native.is_valid())
return native->get_name();
if (base.is_valid())
return base->get_instance_base_type();
return StringName();
}
struct _GDScriptMemberSort {
int index;
StringName name;
_FORCE_INLINE_ bool operator<(const _GDScriptMemberSort& p_member) const { return index < p_member.index; }
};
#ifdef TOOLS_ENABLED
void GDScript::_placeholder_erased(PlaceHolderScriptInstance *p_placeholder) {
placeholders.erase(p_placeholder);
}
/*
void GDScript::_update_placeholder(PlaceHolderScriptInstance *p_placeholder) {
List<PropertyInfo> plist;
GDScript *scr=this;
Map<StringName,Variant> default_values;
while(scr) {
Vector<_GDScriptMemberSort> msort;
for(Map<StringName,PropertyInfo>::Element *E=scr->member_info.front();E;E=E->next()) {
_GDScriptMemberSort ms;
ERR_CONTINUE(!scr->member_indices.has(E->key()));
ms.index=scr->member_indices[E->key()].index;
ms.name=E->key();
msort.push_back(ms);
}
msort.sort();
msort.invert();
for(int i=0;i<msort.size();i++) {
plist.push_front(scr->member_info[msort[i].name]);
if (scr->member_default_values.has(msort[i].name))
default_values[msort[i].name]=scr->member_default_values[msort[i].name];
else {
Variant::CallError err;
default_values[msort[i].name]=Variant::construct(scr->member_info[msort[i].name].type,NULL,0,err);
}
}
scr=scr->_base;
}
p_placeholder->update(plist,default_values);
}*/
#endif
ScriptInstance* GDScript::instance_create(Object *p_this) {
if (!tool && !ScriptServer::is_scripting_enabled()) {
#ifdef TOOLS_ENABLED
//instance a fake script for editing the values
//plist.invert();
/*print_line("CREATING PLACEHOLDER");
for(List<PropertyInfo>::Element *E=plist.front();E;E=E->next()) {
print_line(E->get().name);
}*/
PlaceHolderScriptInstance *si = memnew( PlaceHolderScriptInstance(GDScriptLanguage::get_singleton(),Ref<Script>(this),p_this) );
placeholders.insert(si);
//_update_placeholder(si);
_update_exports();
return si;
#else
return NULL;
#endif
}
GDScript *top=this;
while(top->_base)
top=top->_base;
if (top->native.is_valid()) {
if (!ObjectTypeDB::is_type(p_this->get_type_name(),top->native->get_name())) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break_parse(get_path(),0,"Script inherits from native type '"+String(top->native->get_name())+"', so it can't be instanced in object of type: '"+p_this->get_type()+"'");
}
ERR_EXPLAIN("Script inherits from native type '"+String(top->native->get_name())+"', so it can't be instanced in object of type: '"+p_this->get_type()+"'");
ERR_FAIL_V(NULL);
}
}
return _create_instance(NULL,0,p_this,p_this->cast_to<Reference>());
}
bool GDScript::instance_has(const Object *p_this) const {
return instances.has((Object*)p_this);
}
bool GDScript::has_source_code() const {
return source!="";
}
String GDScript::get_source_code() const {
return source;
}
void GDScript::set_source_code(const String& p_code) {
if (source==p_code)
return;
source=p_code;
#ifdef TOOLS_ENABLED
source_changed_cache=true;
//print_line("SC CHANGED "+get_path());
#endif
}
#ifdef TOOLS_ENABLED
void GDScript::_update_exports_values(Map<StringName,Variant>& values, List<PropertyInfo> &propnames) {
if (base_cache.is_valid()) {
base_cache->_update_exports_values(values,propnames);
}
for(Map<StringName,Variant>::Element *E=member_default_values_cache.front();E;E=E->next()) {
values[E->key()]=E->get();
}
for (List<PropertyInfo>::Element *E=members_cache.front();E;E=E->next()) {
propnames.push_back(E->get());
}
}
#endif
bool GDScript::_update_exports() {
#ifdef TOOLS_ENABLED
bool changed=false;
if (source_changed_cache) {
//print_line("updating source for "+get_path());
source_changed_cache=false;
changed=true;
String basedir=path;
if (basedir=="")
basedir=get_path();
if (basedir!="")
basedir=basedir.get_base_dir();
GDParser parser;
Error err = parser.parse(source,basedir,true,path);
if (err==OK) {
const GDParser::Node* root = parser.get_parse_tree();
ERR_FAIL_COND_V(root->type!=GDParser::Node::TYPE_CLASS,false);
const GDParser::ClassNode *c = static_cast<const GDParser::ClassNode*>(root);
if (base_cache.is_valid()) {
base_cache->inheriters_cache.erase(get_instance_ID());
base_cache=Ref<GDScript>();
}
if (c->extends_used && String(c->extends_file)!="" && String(c->extends_file) != get_path()) {
String path = c->extends_file;
if (path.is_rel_path()) {
String base = get_path();
if (base=="" || base.is_rel_path()) {
ERR_PRINT(("Could not resolve relative path for parent class: "+path).utf8().get_data());
} else {
path=base.get_base_dir().plus_file(path);
}
}
Ref<GDScript> bf = ResourceLoader::load(path);
if (bf.is_valid()) {
//print_line("parent is: "+bf->get_path());
base_cache=bf;
bf->inheriters_cache.insert(get_instance_ID());
//bf->_update_exports(p_instances,true,false);
}
}
members_cache.clear();;
member_default_values_cache.clear();
for(int i=0;i<c->variables.size();i++) {
if (c->variables[i]._export.type==Variant::NIL)
continue;
members_cache.push_back(c->variables[i]._export);
//print_line("found "+c->variables[i]._export.name);
member_default_values_cache[c->variables[i].identifier]=c->variables[i].default_value;
}
_signals.clear();
for(int i=0;i<c->_signals.size();i++) {
_signals[c->_signals[i].name]=c->_signals[i].arguments;
}
}
} else {
//print_line("unchaged is "+get_path());
}
if (base_cache.is_valid()) {
if (base_cache->_update_exports()) {
changed = true;
}
}
if (/*changed &&*/ placeholders.size()) { //hm :(
//print_line("updating placeholders for "+get_path());
//update placeholders if any
Map<StringName,Variant> values;
List<PropertyInfo> propnames;
_update_exports_values(values,propnames);
for (Set<PlaceHolderScriptInstance*>::Element *E=placeholders.front();E;E=E->next()) {
E->get()->update(propnames,values);
}
}
return changed;
#endif
return false;
}
void GDScript::update_exports() {
#ifdef TOOLS_ENABLED
_update_exports();
Set<ObjectID> copy=inheriters_cache; //might get modified
//print_line("update exports for "+get_path()+" ic: "+itos(copy.size()));
for(Set<ObjectID>::Element *E=copy.front();E;E=E->next()) {
Object *id=ObjectDB::get_instance(E->get());
if (!id)
continue;
GDScript *s=id->cast_to<GDScript>();
if (!s)
continue;
s->update_exports();
}
#endif
}
void GDScript::_set_subclass_path(Ref<GDScript>& p_sc,const String& p_path) {
p_sc->path=p_path;
for(Map<StringName,Ref<GDScript> >::Element *E=p_sc->subclasses.front();E;E=E->next()) {
_set_subclass_path(E->get(),p_path);
}
}
Error GDScript::reload() {
ERR_FAIL_COND_V(instances.size(),ERR_ALREADY_IN_USE);
String basedir=path;
if (basedir=="")
basedir=get_path();
if (basedir!="")
basedir=basedir.get_base_dir();
valid=false;
GDParser parser;
Error err = parser.parse(source,basedir,false,path);
if (err) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break_parse(get_path(),parser.get_error_line(),"Parser Error: "+parser.get_error());
}
_err_print_error("GDScript::reload",path.empty()?"built-in":(const char*)path.utf8().get_data(),parser.get_error_line(),("Parse Error: "+parser.get_error()).utf8().get_data());
ERR_FAIL_V(ERR_PARSE_ERROR);
}
GDCompiler compiler;
err = compiler.compile(&parser,this);
if (err) {
if (ScriptDebugger::get_singleton()) {
GDScriptLanguage::get_singleton()->debug_break_parse(get_path(),compiler.get_error_line(),"Parser Error: "+compiler.get_error());
}
_err_print_error("GDScript::reload",path.empty()?"built-in":(const char*)path.utf8().get_data(),compiler.get_error_line(),("Compile Error: "+compiler.get_error()).utf8().get_data());
ERR_FAIL_V(ERR_COMPILATION_FAILED);
}
valid=true;
for(Map<StringName,Ref<GDScript> >::Element *E=subclasses.front();E;E=E->next()) {
_set_subclass_path(E->get(),path);
}
#ifdef TOOLS_ENABLED
/*for (Set<PlaceHolderScriptInstance*>::Element *E=placeholders.front();E;E=E->next()) {
_update_placeholder(E->get());
}*/
#endif
return OK;
}
String GDScript::get_node_type() const {
return ""; // ?
}
ScriptLanguage *GDScript::get_language() const {
return GDScriptLanguage::get_singleton();
}
Variant GDScript::call(const StringName& p_method,const Variant** p_args,int p_argcount,Variant::CallError &r_error) {
GDScript *top=this;
while(top) {
Map<StringName,GDFunction>::Element *E=top->member_functions.find(p_method);
if (E) {
if (!E->get().is_static()) {
WARN_PRINT(String("Can't call non-static function: '"+String(p_method)+"' in script.").utf8().get_data());
}
return E->get().call(NULL,p_args,p_argcount,r_error);
}
top=top->_base;
}
//none found, regular
return Script::call(p_method,p_args,p_argcount,r_error);
}
bool GDScript::_get(const StringName& p_name,Variant &r_ret) const {
{
const GDScript *top=this;
while(top) {
{
const Map<StringName,Variant>::Element *E=top->constants.find(p_name);
if (E) {
r_ret= E->get();
return true;
}
}
{
const Map<StringName,Ref<GDScript> >::Element *E=subclasses.find(p_name);
if (E) {
r_ret=E->get();
return true;
}
}
top=top->_base;
}
if (p_name==GDScriptLanguage::get_singleton()->strings._script_source) {
r_ret=get_source_code();
return true;
}
}
return false;
}
bool GDScript::_set(const StringName& p_name, const Variant& p_value) {
if (p_name==GDScriptLanguage::get_singleton()->strings._script_source) {
set_source_code(p_value);
reload();
} else
return false;
return true;
}
void GDScript::_get_property_list(List<PropertyInfo> *p_properties) const {
p_properties->push_back( PropertyInfo(Variant::STRING,"script/source",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR) );
}
void GDScript::_bind_methods() {
ObjectTypeDB::bind_native_method(METHOD_FLAGS_DEFAULT,"new",&GDScript::_new,MethodInfo("new"));
ObjectTypeDB::bind_method(_MD("get_as_byte_code"),&GDScript::get_as_byte_code);
}
Vector<uint8_t> GDScript::get_as_byte_code() const {
GDTokenizerBuffer tokenizer;
return tokenizer.parse_code_string(source);
};
Error GDScript::load_byte_code(const String& p_path) {
Vector<uint8_t> bytecode;
if (p_path.ends_with("gde")) {
FileAccess *fa = FileAccess::open(p_path,FileAccess::READ);
ERR_FAIL_COND_V(!fa,ERR_CANT_OPEN);
FileAccessEncrypted *fae = memnew( FileAccessEncrypted );
ERR_FAIL_COND_V(!fae,ERR_CANT_OPEN);
Vector<uint8_t> key;
key.resize(32);
for(int i=0;i<key.size();i++) {
key[i]=script_encryption_key[i];
}
Error err = fae->open_and_parse(fa,key,FileAccessEncrypted::MODE_READ);
ERR_FAIL_COND_V(err,err);
bytecode.resize(fae->get_len());
fae->get_buffer(bytecode.ptr(),bytecode.size());
memdelete(fae);
} else {
bytecode = FileAccess::get_file_as_array(p_path);
}
ERR_FAIL_COND_V(bytecode.size()==0,ERR_PARSE_ERROR);
path=p_path;
String basedir=path;
if (basedir=="")
basedir=get_path();
if (basedir!="")
basedir=basedir.get_base_dir();
valid=false;
GDParser parser;
Error err = parser.parse_bytecode(bytecode,basedir,get_path());
if (err) {
_err_print_error("GDScript::load_byte_code",path.empty()?"built-in":(const char*)path.utf8().get_data(),parser.get_error_line(),("Parse Error: "+parser.get_error()).utf8().get_data());
ERR_FAIL_V(ERR_PARSE_ERROR);
}
GDCompiler compiler;
err = compiler.compile(&parser,this);
if (err) {
_err_print_error("GDScript::load_byte_code",path.empty()?"built-in":(const char*)path.utf8().get_data(),compiler.get_error_line(),("Compile Error: "+compiler.get_error()).utf8().get_data());
ERR_FAIL_V(ERR_COMPILATION_FAILED);
}
valid=true;
for(Map<StringName,Ref<GDScript> >::Element *E=subclasses.front();E;E=E->next()) {
_set_subclass_path(E->get(),path);
}
return OK;
}
Error GDScript::load_source_code(const String& p_path) {
DVector<uint8_t> sourcef;
Error err;
FileAccess *f=FileAccess::open(p_path,FileAccess::READ,&err);
if (err) {
ERR_FAIL_COND_V(err,err);
}
int len = f->get_len();
sourcef.resize(len+1);
DVector<uint8_t>::Write w = sourcef.write();
int r = f->get_buffer(w.ptr(),len);
f->close();
memdelete(f);
ERR_FAIL_COND_V(r!=len,ERR_CANT_OPEN);
w[len]=0;
String s;
if (s.parse_utf8((const char*)w.ptr())) {
ERR_EXPLAIN("Script '"+p_path+"' contains invalid unicode (utf-8), so it was not loaded. Please ensure that scripts are saved in valid utf-8 unicode.");
ERR_FAIL_V(ERR_INVALID_DATA);
}
source=s;
#ifdef TOOLS_ENABLED
source_changed_cache=true;
#endif
//print_line("LSC :"+get_path());
path=p_path;
return OK;
}
const Map<StringName,GDFunction>& GDScript::debug_get_member_functions() const {
return member_functions;
}
StringName GDScript::debug_get_member_by_index(int p_idx) const {
for(const Map<StringName,MemberInfo>::Element *E=member_indices.front();E;E=E->next()) {
if (E->get().index==p_idx)
return E->key();
}
return "<error>";
}
Ref<GDScript> GDScript::get_base() const {
return base;
}
bool GDScript::has_script_signal(const StringName& p_signal) const {
if (_signals.has(p_signal))
return true;
if (base.is_valid()) {
return base->has_script_signal(p_signal);
}
#ifdef TOOLS_ENABLED
else if (base_cache.is_valid()){
return base_cache->has_script_signal(p_signal);
}
#endif
return false;
}
void GDScript::get_script_signal_list(List<MethodInfo> *r_signals) const {
for(const Map<StringName,Vector<StringName> >::Element *E=_signals.front();E;E=E->next()) {
MethodInfo mi;
mi.name=E->key();
for(int i=0;i<E->get().size();i++) {
PropertyInfo arg;
arg.name=E->get()[i];
mi.arguments.push_back(arg);
}
r_signals->push_back(mi);
}
if (base.is_valid()) {
base->get_script_signal_list(r_signals);
}
#ifdef TOOLS_ENABLED
else if (base_cache.is_valid()){
base_cache->get_script_signal_list(r_signals);
}
#endif
}
GDScript::GDScript() {
_static_ref=this;
valid=false;
subclass_count=0;
initializer=NULL;
_base=NULL;
_owner=NULL;
tool=false;
#ifdef TOOLS_ENABLED
source_changed_cache=false;
#endif
}
//////////////////////////////
// INSTANCE //
//////////////////////////////
bool GDInstance::set(const StringName& p_name, const Variant& p_value) {
//member
{
const Map<StringName,GDScript::MemberInfo>::Element *E = script->member_indices.find(p_name);
if (E) {
if (E->get().setter) {
const Variant *val=&p_value;
Variant::CallError err;
call(E->get().setter,&val,1,err);
if (err.error==Variant::CallError::CALL_OK) {
return true; //function exists, call was successful
}
}
else
members[E->get().index] = p_value;
return true;
}
}
GDScript *sptr=script.ptr();
while(sptr) {
Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._set);
if (E) {
Variant name=p_name;
const Variant *args[2]={&name,&p_value};
Variant::CallError err;
Variant ret = E->get().call(this,(const Variant**)args,2,err);
if (err.error==Variant::CallError::CALL_OK && ret.get_type()==Variant::BOOL && ret.operator bool())
return true;
}
sptr = sptr->_base;
}
return false;
}
bool GDInstance::get(const StringName& p_name, Variant &r_ret) const {
const GDScript *sptr=script.ptr();
while(sptr) {
{
const Map<StringName,GDScript::MemberInfo>::Element *E = script->member_indices.find(p_name);
if (E) {
if (E->get().getter) {
Variant::CallError err;
r_ret=const_cast<GDInstance*>(this)->call(E->get().getter,NULL,0,err);
if (err.error==Variant::CallError::CALL_OK) {
return true;
}
}
r_ret=members[E->get().index];
return true; //index found
}
}
{
const Map<StringName,Variant>::Element *E = script->constants.find(p_name);
if (E) {
r_ret=E->get();
return true; //index found
}
}
{
const Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._get);
if (E) {
Variant name=p_name;
const Variant *args[1]={&name};
Variant::CallError err;
Variant ret = const_cast<GDFunction*>(&E->get())->call(const_cast<GDInstance*>(this),(const Variant**)args,1,err);
if (err.error==Variant::CallError::CALL_OK && ret.get_type()!=Variant::NIL) {
r_ret=ret;
return true;
}
}
}
sptr = sptr->_base;
}
return false;
}
void GDInstance::get_property_list(List<PropertyInfo> *p_properties) const {
// exported members, not doen yet!
const GDScript *sptr=script.ptr();
List<PropertyInfo> props;
while(sptr) {
const Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._get_property_list);
if (E) {
Variant::CallError err;
Variant ret = const_cast<GDFunction*>(&E->get())->call(const_cast<GDInstance*>(this),NULL,0,err);
if (err.error==Variant::CallError::CALL_OK) {
if (ret.get_type()!=Variant::ARRAY) {
ERR_EXPLAIN("Wrong type for _get_property list, must be an array of dictionaries.");
ERR_FAIL();
}
Array arr = ret;
for(int i=0;i<arr.size();i++) {
Dictionary d = arr[i];
ERR_CONTINUE(!d.has("name"));
ERR_CONTINUE(!d.has("type"));
PropertyInfo pinfo;
pinfo.type = Variant::Type( d["type"].operator int());
ERR_CONTINUE(pinfo.type<0 || pinfo.type>=Variant::VARIANT_MAX );
pinfo.name = d["name"];
ERR_CONTINUE(pinfo.name=="");
if (d.has("hint"))
pinfo.hint=PropertyHint(d["hint"].operator int());
if (d.has("hint_string"))
pinfo.hint_string=d["hint_string"];
if (d.has("usage"))
pinfo.usage=d["usage"];
props.push_back(pinfo);
}
}
}
//instance a fake script for editing the values
Vector<_GDScriptMemberSort> msort;
for(Map<StringName,PropertyInfo>::Element *E=sptr->member_info.front();E;E=E->next()) {
_GDScriptMemberSort ms;
ERR_CONTINUE(!sptr->member_indices.has(E->key()));
ms.index=sptr->member_indices[E->key()].index;
ms.name=E->key();
msort.push_back(ms);
}
msort.sort();
msort.invert();
for(int i=0;i<msort.size();i++) {
props.push_front(sptr->member_info[msort[i].name]);
}
#if 0
if (sptr->member_functions.has("_get_property_list")) {
Variant::CallError err;
GDFunction *f = const_cast<GDFunction*>(&sptr->member_functions["_get_property_list"]);
Variant plv = f->call(const_cast<GDInstance*>(this),NULL,0,err);
if (plv.get_type()!=Variant::ARRAY) {
ERR_PRINT("_get_property_list: expected array returned");
} else {
Array pl=plv;
for(int i=0;i<pl.size();i++) {
Dictionary p = pl[i];
PropertyInfo pinfo;
if (!p.has("name")) {
ERR_PRINT("_get_property_list: expected 'name' key of type string.")
continue;
}
if (!p.has("type")) {
ERR_PRINT("_get_property_list: expected 'type' key of type integer.")
continue;
}
pinfo.name=p["name"];
pinfo.type=Variant::Type(int(p["type"]));
if (p.has("hint"))
pinfo.hint=PropertyHint(int(p["hint"]));
if (p.has("hint_string"))
pinfo.hint_string=p["hint_string"];
if (p.has("usage"))
pinfo.usage=p["usage"];
props.push_back(pinfo);
}
}
}
#endif
sptr = sptr->_base;
}
//props.invert();
for (List<PropertyInfo>::Element *E=props.front();E;E=E->next()) {
p_properties->push_back(E->get());
}
}
void GDInstance::get_method_list(List<MethodInfo> *p_list) const {
const GDScript *sptr=script.ptr();
while(sptr) {
for (Map<StringName,GDFunction>::Element *E = sptr->member_functions.front();E;E=E->next()) {
MethodInfo mi;
mi.name=E->key();
for(int i=0;i<E->get().get_argument_count();i++)
mi.arguments.push_back(PropertyInfo(Variant::NIL,"arg"+itos(i)));
p_list->push_back(mi);
}
sptr = sptr->_base;
}
}
bool GDInstance::has_method(const StringName& p_method) const {
const GDScript *sptr=script.ptr();
while(sptr) {
const Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(p_method);
if (E)
return true;
sptr = sptr->_base;
}
return false;
}
Variant GDInstance::call(const StringName& p_method,const Variant** p_args,int p_argcount,Variant::CallError &r_error) {
//printf("calling %ls:%i method %ls\n", script->get_path().c_str(), -1, String(p_method).c_str());
GDScript *sptr=script.ptr();
while(sptr) {
Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(p_method);
if (E) {
return E->get().call(this,p_args,p_argcount,r_error);
}
sptr = sptr->_base;
}
r_error.error=Variant::CallError::CALL_ERROR_INVALID_METHOD;
return Variant();
}
void GDInstance::call_multilevel(const StringName& p_method,const Variant** p_args,int p_argcount) {
GDScript *sptr=script.ptr();
Variant::CallError ce;
while(sptr) {
Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(p_method);
if (E) {
E->get().call(this,p_args,p_argcount,ce);
}
sptr = sptr->_base;
}
}
void GDInstance::_ml_call_reversed(GDScript *sptr,const StringName& p_method,const Variant** p_args,int p_argcount) {
if (sptr->_base)
_ml_call_reversed(sptr->_base,p_method,p_args,p_argcount);
Variant::CallError ce;
Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(p_method);
if (E) {
E->get().call(this,p_args,p_argcount,ce);
}
}
void GDInstance::call_multilevel_reversed(const StringName& p_method,const Variant** p_args,int p_argcount) {
if (script.ptr()) {
_ml_call_reversed(script.ptr(),p_method,p_args,p_argcount);
}
}
void GDInstance::notification(int p_notification) {
//notification is not virutal, it gets called at ALL levels just like in C.
Variant value=p_notification;
const Variant *args[1]={&value };
GDScript *sptr=script.ptr();
while(sptr) {
Map<StringName,GDFunction>::Element *E = sptr->member_functions.find(GDScriptLanguage::get_singleton()->strings._notification);
if (E) {
Variant::CallError err;
E->get().call(this,args,1,err);
if (err.error!=Variant::CallError::CALL_OK) {
//print error about notification call
}
}
sptr = sptr->_base;
}
}
Ref<Script> GDInstance::get_script() const {
return script;
}
ScriptLanguage *GDInstance::get_language() {
return GDScriptLanguage::get_singleton();
}
GDInstance::GDInstance() {
owner=NULL;
base_ref=false;
}
GDInstance::~GDInstance() {
if (script.is_valid() && owner) {
script->instances.erase(owner);
}
}
/************* SCRIPT LANGUAGE **************/
/************* SCRIPT LANGUAGE **************/
/************* SCRIPT LANGUAGE **************/
/************* SCRIPT LANGUAGE **************/
/************* SCRIPT LANGUAGE **************/
GDScriptLanguage *GDScriptLanguage::singleton=NULL;
String GDScriptLanguage::get_name() const {
return "GDScript";
}
/* LANGUAGE FUNCTIONS */
void GDScriptLanguage::_add_global(const StringName& p_name,const Variant& p_value) {
if (globals.has(p_name)) {
//overwrite existing
global_array[globals[p_name]]=p_value;
return;
}
globals[p_name]=global_array.size();
global_array.push_back(p_value);
_global_array=global_array.ptr();
}
void GDScriptLanguage::init() {
//populate global constants
int gcc=GlobalConstants::get_global_constant_count();
for(int i=0;i<gcc;i++) {
_add_global(StaticCString::create(GlobalConstants::get_global_constant_name(i)),GlobalConstants::get_global_constant_value(i));
}
_add_global(StaticCString::create("PI"),Math_PI);
//populate native classes
List<StringName> class_list;
ObjectTypeDB::get_type_list(&class_list);
for(List<StringName>::Element *E=class_list.front();E;E=E->next()) {
StringName n = E->get();
String s = String(n);
if (s.begins_with("_"))
n=s.substr(1,s.length());
if (globals.has(n))
continue;
Ref<GDNativeClass> nc = memnew( GDNativeClass(E->get()) );
_add_global(n,nc);
}
//populate singletons
List<Globals::Singleton> singletons;
Globals::get_singleton()->get_singletons(&singletons);
for(List<Globals::Singleton>::Element *E=singletons.front();E;E=E->next()) {
_add_global(E->get().name,E->get().ptr);
}
}
String GDScriptLanguage::get_type() const {
return "GDScript";
}
String GDScriptLanguage::get_extension() const {
return "gd";
}
Error GDScriptLanguage::execute_file(const String& p_path) {
// ??
return OK;
}
void GDScriptLanguage::finish() {
}
void GDScriptLanguage::frame() {
// print_line("calls: "+itos(calls));
calls=0;
}
/* EDITOR FUNCTIONS */
void GDScriptLanguage::get_reserved_words(List<String> *p_words) const {
static const char *_reserved_words[]={
"break",
"class",
"continue",
"const",
"else",
"elif",
"enum",
"extends" ,
"for" ,
"func" ,
"if" ,
"in" ,
"null" ,
"not" ,
"return" ,
"self" ,
"while" ,
"true" ,
"false" ,
"tool",
"var",
"setget",
"pass",
"and",
"or",
"export",
"assert",
"yield",
"static",
"float",
"int",
"signal",
0};
const char **w=_reserved_words;
while (*w) {
p_words->push_back(*w);
w++;
}
for(int i=0;i<GDFunctions::FUNC_MAX;i++) {
p_words->push_back(GDFunctions::get_func_name(GDFunctions::Function(i)));
}
}
GDScriptLanguage::GDScriptLanguage() {
calls=0;
ERR_FAIL_COND(singleton);
singleton=this;
strings._init = StaticCString::create("_init");
strings._notification = StaticCString::create("_notification");
strings._set= StaticCString::create("_set");
strings._get= StaticCString::create("_get");
strings._get_property_list= StaticCString::create("_get_property_list");
strings._script_source=StaticCString::create("script/source");
_debug_parse_err_line=-1;
_debug_parse_err_file="";
_debug_call_stack_pos=0;
int dmcs=GLOBAL_DEF("debug/script_max_call_stack",1024);
if (ScriptDebugger::get_singleton()) {
//debugging enabled!
_debug_max_call_stack = dmcs;
if (_debug_max_call_stack<1024)
_debug_max_call_stack=1024;
_call_stack = memnew_arr( CallLevel, _debug_max_call_stack+1 );
} else {
_debug_max_call_stack=0;
_call_stack=NULL;
}
}
GDScriptLanguage::~GDScriptLanguage() {
if (_call_stack) {
memdelete_arr(_call_stack);
}
singleton=NULL;
}
/*************** RESOURCE ***************/
RES ResourceFormatLoaderGDScript::load(const String &p_path, const String& p_original_path, Error *r_error) {
if (r_error)
*r_error=ERR_FILE_CANT_OPEN;
GDScript *script = memnew( GDScript );
Ref<GDScript> scriptres(script);
if (p_path.ends_with(".gde") || p_path.ends_with(".gdc")) {
script->set_script_path(p_original_path); // script needs this.
script->set_path(p_original_path);
Error err = script->load_byte_code(p_path);
if (err!=OK) {
ERR_FAIL_COND_V(err!=OK, RES());
}
} else {
Error err = script->load_source_code(p_path);
if (err!=OK) {
ERR_FAIL_COND_V(err!=OK, RES());
}
script->set_script_path(p_original_path); // script needs this.
script->set_path(p_original_path);
//script->set_name(p_path.get_file());
script->reload();
}
if (r_error)
*r_error=OK;
return scriptres;
}
void ResourceFormatLoaderGDScript::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("gd");
p_extensions->push_back("gdc");
p_extensions->push_back("gde");
}
bool ResourceFormatLoaderGDScript::handles_type(const String& p_type) const {
return (p_type=="Script" || p_type=="GDScript");
}
String ResourceFormatLoaderGDScript::get_resource_type(const String &p_path) const {
String el = p_path.extension().to_lower();
if (el=="gd" || el=="gdc" || el=="gde")
return "GDScript";
return "";
}
Error ResourceFormatSaverGDScript::save(const String &p_path,const RES& p_resource,uint32_t p_flags) {
Ref<GDScript> sqscr = p_resource;
ERR_FAIL_COND_V(sqscr.is_null(),ERR_INVALID_PARAMETER);
String source = sqscr->get_source_code();
Error err;
FileAccess *file = FileAccess::open(p_path,FileAccess::WRITE,&err);
if (err) {
ERR_FAIL_COND_V(err,err);
}
file->store_string(source);
if (file->get_error()!=OK && file->get_error()!=ERR_FILE_EOF) {
memdelete(file);
return ERR_CANT_CREATE;
}
file->close();
memdelete(file);
return OK;
}
void ResourceFormatSaverGDScript::get_recognized_extensions(const RES& p_resource,List<String> *p_extensions) const {
if (p_resource->cast_to<GDScript>()) {
p_extensions->push_back("gd");
}
}
bool ResourceFormatSaverGDScript::recognize(const RES& p_resource) const {
return p_resource->cast_to<GDScript>()!=NULL;
}
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