bool CBotExprLitNum::Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this);
if (pile->IfStep()) return false;
CBotVar* var = CBotVar::Create("", m_numtype);
std::string nombre ;
if (m_token.GetType() == TokenTypDef)
{
nombre = m_token.GetString();
}
switch (m_numtype)
{
case CBotTypShort:
case CBotTypInt:
var->SetValInt(m_valint, nombre);
break;
case CBotTypFloat:
var->SetValFloat(m_valfloat);
break;
default:
assert(false);
}
pile->SetVar(var); // place on the stack
return pj->Return(pile); // it's ok
}
bool CBotBreak :: Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this);
// if ( pile == EOX ) return true;
if ( pile->IfStep() ) return false;
pile->SetBreak(m_token.GetType()==ID_BREAK ? 1 : 2, m_label);
return pj->Return(pile);
}
bool CBotFunction::Execute(CBotVar** ppVars, CBotStack* &pj, CBotVar* pInstance)
{
CBotStack* pile = pj->AddStack(this, 2); // one end of stack local to this function
// if ( pile == EOX ) return true;
pile->SetBotCall(m_pProg); // bases for routines
if ( pile->GetState() == 0 )
{
if ( !m_Param->Execute(ppVars, pile) ) return false; // define parameters
pile->IncState();
}
if ( pile->GetState() == 1 && !m_MasterClass.IsEmpty() )
{
// makes "this" known
CBotVar* pThis ;
if ( pInstance == NULL )
{
pThis = CBotVar::Create("this", CBotTypResult( CBotTypClass, m_MasterClass ));
pThis->SetInit(2);
}
else
{
pThis = CBotVar::Create("this", CBotTypResult( CBotTypPointer, m_MasterClass ));
pThis->SetPointer(pInstance);
pThis->SetInit(2);
}
// pThis->SetUniqNum(m_nThisIdent);
pThis->SetUniqNum(-2);
pile->AddVar(pThis);
pile->IncState();
}
if ( pile->IfStep() ) return false;
if ( !m_Block->Execute(pile) )
{
if ( pile->GetError() < 0 )
pile->SetError( 0 );
else
return false;
}
return pj->Return(pile);
}
bool CBotWhile::Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this); // adds an item to the stack
// or find in case of recovery
// if ( pile == EOX ) return true;
if ( pile->IfStep() ) return false;
while( true ) switch( pile->GetState() ) // executes the loop
{ // there are two possible states (depending on recovery)
case 0:
// evaluates the condition
if ( !m_condition->Execute(pile) ) return false; // interrupted here?
// the result of the condition is on the stack
// terminates if an error or if the condition is false
if ( !pile->IsOk() || pile->GetVal() != true )
{
return pj->Return(pile); // sends the results and releases the stack
}
// the condition is true, pass in the second mode
if (!pile->SetState(1)) return false; // ready for further
case 1:
// evaluates the associated statement block
if (m_block != nullptr &&
!m_block->Execute(pile) )
{
if (pile->IfContinue(0, m_label)) continue; // if continued, will return to test
return pj->BreakReturn(pile, m_label); // sends the results and releases the stack
}
// terminates if there is an error
if ( !pile->IsOk() )
{
return pj->Return(pile); // sends the results and releases the stack
}
// returns to the test again
if (!pile->SetState(0, 0)) return false;
continue;
}
}
bool CBotReturn::Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this);
// if ( pile == EOX ) return true;
if ( pile->GetState() == 0 )
{
if ( m_Instr != NULL && !m_Instr->Execute(pile) ) return false; // evaluate the result
// the result is on the stack
pile->IncState();
}
if ( pile->IfStep() ) return false;
pile->SetBreak(3, CBotString());
return pj->Return(pile);
}
bool CBotThrow :: Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this);
// if ( pile == EOX ) return true;
if ( pile->GetState() == 0 )
{
if ( !m_Value->Execute(pile) ) return false;
pile->IncState();
}
if ( pile->IfStep() ) return false;
int val = pile->GetVal();
if ( val < 0 ) val = TX_BADTHROW;
pile->SetError( val, &m_token );
return pj->Return( pile );
}
bool CBotIf :: Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this); // adds an item to the stack
// or found in case of recovery
// if ( pile == EOX ) return true;
if ( pile->IfStep() ) return false;
// according to recovery, it may be in one of two states
if( pile->GetState() == 0 )
{
// evaluates the condition
if ( !m_condition->Execute(pile) ) return false; // interrupted here?
// terminates if there is an error
if ( !pile->IsOk() )
{
return pj->Return(pile); // returns the results and releases the stack
}
// passes into the second state
if (!pile->SetState(1)) return false; // ready for further
}
// second state, evaluates the associated instructions
// the result of the condition is on the stack
if ( pile->GetVal() == true ) // condition was true?
{
if (m_block != nullptr && // block may be absent
!m_block->Execute(pile) ) return false; // interrupted here?
}
else
{
if (m_blockElse != nullptr && // if there is an alternate block
!m_blockElse->Execute(pile) ) return false; // interrupted here
}
// sends the results and releases the stack
return pj->Return(pile);
}
BOOL CBotIf :: Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this); // ajoute un élément à la pile
// ou le retrouve en cas de reprise
// if ( pile == EOX ) return TRUE;
if ( pile->IfStep() ) return FALSE;
// selon la reprise, on peut être dans l'un des 2 états
if( pile->GivState() == 0 )
{
// évalue la condition
if ( !m_Condition->Execute(pile) ) return FALSE; // interrompu ici ?
// termine s'il y a une erreur
if ( !pile->IsOk() )
{
return pj->Return(pile); // transmet le résultat et libère la pile
}
// passe dans le second état
if (!pile->SetState(1)) return FALSE; // prêt pour la suite
}
// second état, évalue les instructions associées
// le résultat de la condition est sur la pile
if ( pile->GivVal() == TRUE ) // condition était vraie ?
{
if ( m_Block != NULL && // bloc peut être absent
!m_Block->Execute(pile) ) return FALSE; // interrompu ici ?
}
else
{
if ( m_BlockElse != NULL && // s'il existe un bloc alternatif
!m_BlockElse->Execute(pile) ) return FALSE; // interrompu ici
}
// transmet le résultat et libère la pile
return pj->Return(pile);
}
bool CBotLeftExpr::Execute(CBotStack* &pj, CBotStack* array)
{
CBotStack* pile = pj->AddStack();
CBotVar* var1 = nullptr;
CBotVar* var2 = nullptr;
// fetch a variable (not copy)
if (!ExecuteVar(var1, array, nullptr, false)) return false;
if (pile->IfStep()) return false;
if (var1)
{
var2 = pj->GetVar(); // result on the input stack
if (var2)
{
CBotTypResult t1 = var1->GetTypResult();
CBotTypResult t2 = var2->GetTypResult();
if (t2.Eq(CBotTypPointer))
{
CBotClass* c1 = t1.GetClass();
CBotClass* c2 = var2->GetClass();
if ( !c2->IsChildOf(c1))
{
CBotToken* pt = &m_token;
pile->SetError(CBotErrBadType1, pt);
return pj->Return(pile); // operation performed
}
var1->SetVal(var2); // set pointer
var1->SetType(t1); // keep pointer type
}
else
var1->SetVal(var2); // do assignment
}
pile->SetCopyVar(var1); // replace the stack with the copy of the variable
// (for name)
}
return pj->Return(pile); // operation performed
}
bool CBotNew::Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this); //main stack
if (m_exprRetVar != nullptr) // new Class().method()
{
if (pile->GetState() == 2)
{
CBotStack* pile3 = pile->AddStack();
if (!m_exprRetVar->Execute(pile3)) return false;
return pj->Return(pile3);
}
}
if (pile->IfStep()) return false;
CBotStack* pile1 = pj->AddStack2(); //secondary stack
CBotVar* pThis = nullptr;
CBotToken* pt = &m_vartoken;
CBotClass* pClass = CBotClass::Find(pt);
// create the variable "this" pointer type to the stack
if ( pile->GetState()==0)
{
// create an instance of the requested class
// and initialize the pointer to that object
pThis = CBotVar::Create("this", pClass);
pThis->SetUniqNum(-2) ;
pile1->SetVar(pThis); // place on stack1
pile->IncState();
}
// fetch the this pointer if it was interrupted
if ( pThis == nullptr)
{
pThis = pile1->GetVar(); // find the pointer
}
// is there an assignment or parameters (constructor)
if ( pile->GetState()==1)
{
// evaluates the constructor of the instance
CBotVar* ppVars[1000];
CBotStack* pile2 = pile;
int i = 0;
CBotInstr* p = m_parameters;
// evaluate the parameters
// and places the values on the stack
// to be interrupted at any time
if (p != nullptr) while ( true)
{
pile2 = pile2->AddStack(); // space on the stack for the result
if (pile2->GetState() == 0)
{
if (!p->Execute(pile2)) return false; // interrupted here?
pile2->SetState(1);
}
ppVars[i++] = pile2->GetVar();
p = p->GetNext();
if ( p == nullptr) break;
}
ppVars[i] = nullptr;
// create a variable for the result
CBotVar* pResult = nullptr; // constructos still void
if ( !pClass->ExecuteMethode(m_nMethodeIdent, pClass->GetName(),
pThis, ppVars,
pResult, pile2, GetToken())) return false; // interrupt
pThis->ConstructorSet(); // indicates that the constructor has been called
}
if (m_exprRetVar != nullptr) // new Class().method()
{
pile->AddStack()->Delete(); // release pile2 stack
CBotStack* pile3 = pile->AddStack(); // add new stack
pile3->SetCopyVar(pThis); // copy the pointer (from pile1)
pile1->Delete(); // release secondary stack(pile1)
pile->SetState(2);
return false; // go back to the top ^^^
}
return pj->Return(pile1); // passes below
}
bool CBotFor :: Execute(CBotStack* &pj)
{
CBotStack* pile = pj->AddStack(this, true); // adds an item to the stack (variables locales)
// or find in case of recovery
// if ( pile == EOX ) return true;
if ( pile->IfStep() ) return false;
while( true ) switch( pile->GetState() ) // executes the loop
{ // there are four possible states (depending on recovery)
case 0:
// initialize
if ( m_Init != nullptr &&
!m_Init->Execute(pile) ) return false; // interrupted here ?
if (!pile->SetState(1)) return false; // ready for further
case 1:
// evaluates the condition
if ( m_Test != nullptr ) // no strings attached? -> True!
{
if (!m_Test->Execute(pile) ) return false; // interrupted here ?
// the result of the condition is on the stack
// terminates if an error or if the condition is false
if ( !pile->IsOk() || pile->GetVal() != true )
{
return pj->Return(pile); // sends the results and releases the stack
}
}
// la condition est vrai, passe à la suite
if (!pile->SetState(2)) return false; // ready for further
case 2:
// evaluates the associated statement block
if ( m_Block != nullptr &&
!m_Block->Execute(pile) )
{
if (pile->IfContinue(3, m_label)) continue; // if continued, going on to incrementation
return pj->BreakReturn(pile, m_label); // sends the results and releases the stack
}
// terminates if there is an error
if ( !pile->IsOk() )
{
return pj->Return(pile); // sends the results and releases the stack
}
if (!pile->SetState(3)) return false; // ready for further
case 3:
// evalutate the incrementation
if ( m_Incr != nullptr &&
!m_Incr->Execute(pile) ) return false; // interrupted here ?
// returns to the test again
if (!pile->SetState(1, 0)) return false; // returns to the test
continue;
}
}
bool CBotClassInst::Execute(CBotStack* &pj)
{
CBotVar* pThis = NULL;
CBotStack* pile = pj->AddStack(this);//essential for SetState()
// if ( pile == EOX ) return true;
CBotToken* pt = &m_token;
CBotClass* pClass = CBotClass::Find(pt);
bool bIntrincic = pClass->IsIntrinsic();
// creates the variable of type pointer to the object
if ( pile->GetState()==0)
{
CBotString name = m_var->m_token.GetString();
if ( bIntrincic )
{
pThis = CBotVar::Create(name, CBotTypResult( CBotTypIntrinsic, pClass ));
}
else
{
pThis = CBotVar::Create(name, CBotTypResult( CBotTypPointer, pClass ));
}
pThis->SetUniqNum((static_cast<CBotLeftExprVar*>(m_var))->m_nIdent); // its attribute as unique number
pile->AddVar(pThis); // place on the stack
pile->IncState();
}
if ( pThis == NULL ) pThis = pile->FindVar((static_cast<CBotLeftExprVar*>(m_var))->m_nIdent);
if ( pile->GetState()<3)
{
// ss there an assignment or parameters (contructor)
// CBotVarClass* pInstance = NULL;
if ( m_expr != NULL )
{
// evaluates the expression for the assignment
if (!m_expr->Execute(pile)) return false;
if ( bIntrincic )
{
CBotVar* pv = pile->GetVar();
if ( pv == NULL || pv->GetPointer() == NULL )
{
pile->SetError(TX_NULLPT, &m_token);
return pj->Return(pile);
}
pThis->Copy(pile->GetVar(), false);
}
else
{
CBotVarClass* pInstance;
pInstance = (static_cast<CBotVarPointer*>(pile->GetVar()))->GetPointer(); // value for the assignment
pThis->SetPointer(pInstance);
}
pThis->SetInit(true);
}
else if ( m_hasParams )
{
// evaluates the constructor of an instance
if ( !bIntrincic && pile->GetState() == 1)
{
CBotToken* pt = &m_token;
CBotClass* pClass = CBotClass::Find(pt);
// creates an instance of the requested class
CBotVarClass* pInstance;
pInstance = static_cast<CBotVarClass*>(CBotVar::Create("", pClass));
pThis->SetPointer(pInstance);
delete pInstance;
pile->IncState();
}
CBotVar* ppVars[1000];
CBotStack* pile2 = pile;
int i = 0;
CBotInstr* p = m_Parameters;
// evaluates the parameters
// and places the values on the stack
// to (can) be interrupted (broken) at any time
if ( p != NULL) while ( true )
{
pile2 = pile2->AddStack(); // place on the stack for the results
if ( pile2->GetState() == 0 )
{
if (!p->Execute(pile2)) return false; // interrupted here?
pile2->SetState(1);
}
ppVars[i++] = pile2->GetVar();
p = p->GetNext();
if ( p == NULL) break;
}
ppVars[i] = NULL;
// creates a variable for the result
CBotVar* pResult = NULL; // constructor still void
if ( !pClass->ExecuteMethode(m_nMethodeIdent, pClass->GetName(),
pThis, ppVars,
pResult, pile2, GetToken())) return false; // interrupt
pThis->SetInit(true);
pThis->ConstructorSet(); // indicates that the constructor has been called
pile->Return(pile2); // releases a piece of stack
// pInstance = pThis->GetPointer();
}
// if ( !bIntrincic ) pThis->SetPointer(pInstance); // a pointer to the instance
pile->SetState(3); // finished this part
}
if ( pile->IfStep() ) return false;
if ( m_next2b != NULL &&
!m_next2b->Execute(pile)) return false; // other (s) definition (s)
return pj->Return( pile ); // transmits below (further)
}
