CBotVar* CBotClass::GetItemRef(int nIdent)
{
CBotVar* p = m_pVar;
while ( p != NULL )
{
if ( p->GetUniqNum() == nIdent ) return p;
p = p->GetNext();
}
if ( m_pParent != NULL ) return m_pParent->GetItemRef(nIdent);
return NULL;
}
CBotVar* CBotStack::FindVar(long ident, bool bUpdate, bool bModif)
{
CBotStack* p = this;
while (p != NULL)
{
CBotVar* pp = p->m_listVar;
while ( pp != NULL)
{
if (pp->GetUniqNum() == ident)
{
if ( bUpdate )
pp->Maj(m_pUser, false);
return pp;
}
pp = pp->m_next;
}
p = p->m_prev;
}
return NULL;
}
CBotLeftExpr* CBotLeftExpr::Compile(CBotToken* &p, CBotCStack* pStack)
{
CBotCStack* pStk = pStack->TokenStack();
pStk->SetStartError(p->GetStart());
// is it a variable name?
if (p->GetType() == TokenTypVar)
{
CBotLeftExpr* inst = new CBotLeftExpr(); // creates the object
inst->SetToken(p);
CBotVar* var;
if (nullptr != (var = pStk->FindVar(p))) // seek if known variable
{
inst->m_nIdent = var->GetUniqNum();
if (inst->m_nIdent > 0 && inst->m_nIdent < 9000)
{
if (CBotFieldExpr::CheckProtectionError(pStk, nullptr, var, CBotVar::ProtectionLevel::ReadOnly))
{
pStk->SetError(CBotErrPrivate, p);
goto err;
}
// this is an element of the current class
// adds the equivalent of this. before
CBotToken pthis("this");
inst->SetToken(&pthis);
inst->m_nIdent = -2; // indent for this
CBotFieldExpr* i = new CBotFieldExpr(); // new element
i->SetToken(p); // keeps the name of the token
inst->AddNext3(i); // add after
var = pStk->FindVar(pthis);
var = var->GetItem(p->GetString());
i->SetUniqNum(var->GetUniqNum());
}
p = p->GetNext(); // next token
while (true)
{
if (var->GetType() == CBotTypArrayPointer)
{
if (IsOfType( p, ID_OPBRK ))
{
CBotIndexExpr* i = new CBotIndexExpr();
i->m_expr = CBotExpression::Compile(p, pStk);
inst->AddNext3(i); // add to the chain
var = (static_cast<CBotVarArray*>(var))->GetItem(0,true); // gets the component [0]
if (i->m_expr == nullptr)
{
pStk->SetError(CBotErrBadIndex, p->GetStart());
goto err;
}
if (!pStk->IsOk() || !IsOfType( p, ID_CLBRK ))
{
pStk->SetError(CBotErrCloseIndex, p->GetStart());
goto err;
}
continue;
}
}
if (var->GetType(CBotVar::GetTypeMode::CLASS_AS_POINTER) == CBotTypPointer) // for classes
{
if (IsOfType(p, ID_DOT))
{
CBotToken* pp = p;
CBotFieldExpr* i = new CBotFieldExpr(); // new element
i->SetToken(pp); // keeps the name of the token
inst->AddNext3(i); // adds after
if (p->GetType() == TokenTypVar) // must be a name
{
CBotVar* preVar = var;
var = var->GetItem(p->GetString()); // get item correspondent
if (var != nullptr)
{
if (CBotFieldExpr::CheckProtectionError(pStk, preVar, var,
CBotVar::ProtectionLevel::ReadOnly))
{
pStk->SetError(CBotErrPrivate, pp);
goto err;
}
i->SetUniqNum(var->GetUniqNum());
p = p->GetNext(); // skips the name
continue;
}
pStk->SetError(CBotErrUndefItem, p);
}
pStk->SetError(CBotErrUndefClass, p->GetStart());
goto err;
}
}
break;
}
if (pStk->IsOk()) return static_cast<CBotLeftExpr*> (pStack->Return(inst, pStk));
}
pStk->SetError(CBotErrUndefVar, p);
err:
delete inst;
return static_cast<CBotLeftExpr*> ( pStack->Return(nullptr, pStk));
}
return static_cast<CBotLeftExpr*> ( pStack->Return(nullptr, pStk));
}
CBotInstr* CBotExprRetVar::Compile(CBotToken*& p, CBotCStack* pStack, bool bMethodsOnly)
{
if (p->GetType() == ID_DOT)
{
CBotVar* var = pStack->GetVar();
if (var == nullptr) return nullptr;
CBotCStack* pStk = pStack->TokenStack();
CBotInstr* inst = new CBotExprRetVar();
while (true)
{
pStk->SetStartError(p->GetStart());
if (var->GetType() == CBotTypArrayPointer)
{
if (bMethodsOnly) goto err;
if (IsOfType( p, ID_OPBRK ))
{
CBotIndexExpr* i = new CBotIndexExpr();
i->m_expr = CBotExpression::Compile(p, pStk);
inst->AddNext3(i);
var = var->GetItem(0,true);
if (i->m_expr == nullptr || pStk->GetType() != CBotTypInt)
{
pStk->SetError(CBotErrBadIndex, p->GetStart());
goto err;
}
if (!pStk->IsOk() || !IsOfType( p, ID_CLBRK ))
{
pStk->SetError(CBotErrCloseIndex, p->GetStart());
goto err;
}
continue;
}
}
if (var->GetType(CBotVar::GetTypeMode::CLASS_AS_POINTER) == CBotTypPointer)
{
if (IsOfType(p, ID_DOT))
{
CBotToken* pp = p;
if (p->GetType() == TokenTypVar)
{
if (p->GetNext()->GetType() == ID_OPENPAR)
{
CBotInstr* i = CBotInstrMethode::Compile(p, pStk, var, bMethodsOnly);
if (!pStk->IsOk()) goto err;
inst->AddNext3(i);
return pStack->Return(inst, pStk);
}
else if (bMethodsOnly)
{
p = p->GetPrev();
goto err;
}
else
{
CBotFieldExpr* i = new CBotFieldExpr();
i->SetToken(pp);
inst->AddNext3(i);
CBotVar* preVar = var;
var = var->GetItem(p->GetString());
if (var != nullptr)
{
i->SetUniqNum(var->GetUniqNum());
if (CBotFieldExpr::CheckProtectionError(pStk, preVar, var))
{
pStk->SetError(CBotErrPrivate, pp);
goto err;
}
}
}
if (var != nullptr)
{
p = p->GetNext();
continue;
}
pStk->SetError(CBotErrUndefItem, p);
goto err;
}
pStk->SetError(CBotErrUndefClass, p);
goto err;
}
}
break;
}
pStk->SetCopyVar(var);
if (pStk->IsOk()) return pStack->Return(inst, pStk);
pStk->SetError(CBotErrUndefVar, p);
err:
delete inst;
return pStack->Return(nullptr, pStk);
}
return nullptr;
}
bool CBotClass::CompileDefItem(CBotToken* &p, CBotCStack* pStack, bool bSecond)
{
bool bStatic = false;
int mProtect = PR_PUBLIC;
bool bSynchro = false;
while (IsOfType(p, ID_SEP)) ;
CBotTypResult type( -1 );
if ( IsOfType(p, ID_SYNCHO) ) bSynchro = true;
CBotToken* pBase = p;
if ( IsOfType(p, ID_STATIC) ) bStatic = true;
if ( IsOfType(p, ID_PUBLIC) ) mProtect = PR_PUBLIC;
if ( IsOfType(p, ID_PRIVATE) ) mProtect = PR_PRIVATE;
if ( IsOfType(p, ID_PROTECTED) ) mProtect = PR_PROTECT;
if ( IsOfType(p, ID_STATIC) ) bStatic = true;
// CBotClass* pClass = NULL;
type = TypeParam(p, pStack); // type of the result
if ( type.Eq(-1) )
{
pStack->SetError(TX_NOTYP, p);
return false;
}
while (pStack->IsOk())
{
CBotToken* pp = p;
IsOfType(p, ID_NOT); // skips ~ eventual (destructor)
if (IsOfType(p, TokenTypVar))
{
CBotInstr* limites = NULL;
while ( IsOfType( p, ID_OPBRK ) ) // a table?
{
CBotInstr* i = NULL;
if ( p->GetType() != ID_CLBRK )
i = CBotExpression::Compile( p, pStack ); // expression for the value
else
i = new CBotEmpty(); // special if not a formula
type = CBotTypResult(CBotTypArrayPointer, type);
if (!pStack->IsOk() || !IsOfType( p, ID_CLBRK ) )
{
pStack->SetError(TX_CLBRK, p->GetStart());
return false;
}
/* CBotVar* pv = pStack->GetVar();
if ( pv->GetType()>= CBotTypBoolean )
{
pStack->SetError(TX_BADTYPE, p->GetStart());
return false;
}*/
if (limites == NULL) limites = i;
else limites->AddNext3(i);
}
if ( p->GetType() == ID_OPENPAR )
{
if ( !bSecond )
{
p = pBase;
CBotFunction* f =
CBotFunction::Compile1(p, pStack, this);
if ( f == NULL ) return false;
if (m_pMethod == NULL) m_pMethod = f;
else m_pMethod->AddNext(f);
}
else
{
// return a method precompiled in pass 1
CBotFunction* pf = m_pMethod;
CBotFunction* prev = NULL;
while ( pf != NULL )
{
if (pf->GetName() == pp->GetString()) break;
prev = pf;
pf = pf->Next();
}
bool bConstructor = (pp->GetString() == GetName());
CBotCStack* pile = pStack->TokenStack(NULL, true);
// make "this" known
CBotToken TokenThis(CBotString("this"), CBotString());
CBotVar* pThis = CBotVar::Create(&TokenThis, CBotTypResult( CBotTypClass, this ) );
pThis->SetUniqNum(-2);
pile->AddVar(pThis);
if ( m_pParent )
{
// makes "super" known
CBotToken TokenSuper(CBotString("super"), CBotString());
CBotVar* pThis = CBotVar::Create(&TokenSuper, CBotTypResult( CBotTypClass, m_pParent ) );
pThis->SetUniqNum(-3);
pile->AddVar(pThis);
}
// int num = 1;
CBotClass* my = this;
while (my != NULL)
{
// places a copy of variables of a class (this) on a stack
CBotVar* pv = my->m_pVar;
while (pv != NULL)
{
CBotVar* pcopy = CBotVar::Create(pv);
pcopy->SetInit(!bConstructor || pv->IsStatic());
pcopy->SetUniqNum(pv->GetUniqNum());
pile->AddVar(pcopy);
pv = pv->GetNext();
}
my = my->m_pParent;
}
// compiles a method
p = pBase;
CBotFunction* f =
CBotFunction::Compile(p, pile, NULL/*, false*/);
if ( f != NULL )
{
f->m_pProg = pStack->GetBotCall();
f->m_bSynchro = bSynchro;
// replaces the element in the chain
f->m_next = pf->m_next;
pf->m_next = NULL;
delete pf;
if (prev == NULL) m_pMethod = f;
else prev->m_next = f;
}
pStack->Return(NULL, pile);
}
return pStack->IsOk();
}
// definition of an element
if (type.Eq(0))
{
pStack->SetError(TX_ENDOF, p);
return false;
}
CBotInstr* i = NULL;
if ( IsOfType(p, ID_ASS ) )
{
if ( type.Eq(CBotTypArrayPointer) )
{
i = CBotListArray::Compile(p, pStack, type.GetTypElem());
}
else
{
// it has an assignmet to calculate
i = CBotTwoOpExpr::Compile(p, pStack);
}
if ( !pStack->IsOk() ) return false;
}
if ( !bSecond )
{
CBotVar* pv = CBotVar::Create(pp->GetString(), type);
pv -> SetStatic( bStatic );
pv -> SetPrivate( mProtect );
AddItem( pv );
pv->m_InitExpr = i;
pv->m_LimExpr = limites;
if ( pv->IsStatic() && pv->m_InitExpr != NULL )
{
CBotStack* pile = CBotStack::FirstStack(); // independent stack
while(pile->IsOk() && !pv->m_InitExpr->Execute(pile)); // evaluates the expression without timer
pv->SetVal( pile->GetVar() ) ;
pile->Delete();
}
}
else
delete i;
if ( IsOfType(p, ID_COMMA) ) continue;
if ( IsOfType(p, ID_SEP) ) break;
}
pStack->SetError(TX_ENDOF, p);
}
return pStack->IsOk();
}
