CBotInstr* CBotDo::Compile(CBotToken* &p, CBotCStack* pStack)
{
CBotDo* inst = new CBotDo(); // creates the object
CBotToken* pp = p; // preserves at the ^ token (starting position)
if ( IsOfType( p, TokenTypVar ) &&
IsOfType( p, ID_DOTS ) )
{
inst->m_label = pp->GetString(); // register the name of label
}
inst->SetToken(p);
if (!IsOfType(p, ID_DO)) return nullptr; // should never happen
CBotCStack* pStk = pStack->TokenStack(pp); // un petit bout de pile svp
// looking for a statement block after the do
IncLvl(inst->m_label);
inst->m_Block = CBotBlock::CompileBlkOrInst( p, pStk, true );
DecLvl();
if ( pStk->IsOk() )
{
if (IsOfType(p, ID_WHILE))
{
if ( nullptr != (inst->m_Condition = CBotCondition::Compile( p, pStk )) )
{
// the condition exists
if (IsOfType(p, ID_SEP))
{
return pStack->Return(inst, pStk); // return an object to the application
}
pStk->SetError(TX_ENDOF, p->GetStart());
}
}
pStk->SetError(TX_WHILE, p->GetStart());
}
delete inst; // error, frees up
return pStack->Return(nullptr, pStk); // no object, the error is on the stack
}
CBotInstr* CBotNew::Compile(CBotToken* &p, CBotCStack* pStack)
{
CBotToken* pp = p;
if (!IsOfType(p, ID_NEW)) return nullptr;
// verifies that the token is a class name
if (p->GetType() != TokenTypVar)
{
pStack->SetError(CBotErrBadNew, p);
return nullptr;
}
CBotClass* pClass = CBotClass::Find(p);
if (pClass == nullptr)
{
pStack->SetError(CBotErrBadNew, p);
return nullptr;
}
CBotNew* inst = new CBotNew();
inst->SetToken(pp);
inst->m_vartoken = *p;
p = p->GetNext();
// creates the object on the stack
// with a pointer to the object
CBotVar* pVar = CBotVar::Create("", pClass);
// do the call of the creator
CBotCStack* pStk = pStack->TokenStack();
{
// check if there are parameters
CBotVar* ppVars[1000];
inst->m_parameters = CompileParams(p, pStk, ppVars);
if (!pStk->IsOk()) goto error;
// constructor exist?
CBotTypResult r = pClass->CompileMethode(pClass->GetName(), pVar, ppVars, pStk, inst->m_nMethodeIdent);
delete pStk->TokenStack(); // release extra stack
int typ = r.GetType();
// if there is no constructor, and no parameters either, it's ok
if (typ == CBotErrUndefCall && inst->m_parameters == nullptr) typ = 0;
pVar->SetInit(CBotVar::InitType::DEF); // mark the instance as init
if (typ>20)
{
pStk->SetError(static_cast<CBotError>(typ), inst->m_vartoken.GetEnd());
goto error;
}
// if the constructor does not exist, but there are parameters
if (typ<0 && inst->m_parameters != nullptr)
{
pStk->SetError(CBotErrNoConstruct, &inst->m_vartoken);
goto error;
}
// makes pointer to the object on the stack
pStk->SetVar(pVar);
pp = p;
// chained method ?
if (nullptr != (inst->m_exprRetVar = CBotExprRetVar::Compile(p, pStk, true)))
{
inst->m_exprRetVar->SetToken(pp);
delete pStk->TokenStack();
}
if (pStack->IsOk())
return pStack->Return(inst, pStk);
}
error:
delete inst;
return pStack->Return(nullptr, pStk);
}
CBotInstr* CBotListArray::Compile(CBotToken* &p, CBotCStack* pStack, CBotTypResult type)
{
CBotCStack* pStk = pStack->TokenStack(p);
CBotToken* pp = p;
if (IsOfType( p, ID_NULL ) || (IsOfType(p, ID_OPBLK) && IsOfType(p, ID_CLBLK)))
{
CBotInstr* inst = new CBotExprLitNull();
inst->SetToken(pp);
return pStack->Return(inst, pStk); // ok with empty element
}
p = pp;
CBotListArray* inst = new CBotListArray();
if (IsOfType( p, ID_OPBLK ))
{
// each element takes the one after the other
if (type.Eq( CBotTypArrayPointer ))
{
pStk->SetStartError(p->GetStart());
if (nullptr == ( inst->m_expr = CBotListArray::Compile( p, pStk, type.GetTypElem() ) ))
{
if (pStk->IsOk())
{
inst->m_expr = CBotTwoOpExpr::Compile(p, pStk);
if (inst->m_expr == nullptr || !pStk->GetTypResult().Compare(type)) // compatible type ?
{
pStk->SetError(CBotErrBadType1, p->GetStart());
goto error;
}
}
}
while (IsOfType( p, ID_COMMA )) // other elements?
{
pStk->SetStartError(p->GetStart());
CBotInstr* i = nullptr;
if (nullptr == ( i = CBotListArray::Compile(p, pStk, type.GetTypElem() ) ))
{
if (pStk->IsOk())
{
i = CBotTwoOpExpr::Compile(p, pStk);
if (i == nullptr || !pStk->GetTypResult().Compare(type)) // compatible type ?
{
pStk->SetError(CBotErrBadType1, p->GetStart());
goto error;
}
}
}
inst->m_expr->AddNext3b(i);
if ( p->GetType() == ID_COMMA ) continue;
if ( p->GetType() == ID_CLBLK ) break;
pStk->SetError(CBotErrClosePar, p);
goto error;
}
}
else
{
pStk->SetStartError(p->GetStart());
if (nullptr == ( inst->m_expr = CBotTwoOpExpr::Compile( p, pStk )))
{
goto error;
}
CBotTypResult valType = pStk->GetTypResult(CBotVar::GetTypeMode::CLASS_AS_INTRINSIC);
if (!TypeCompatible(valType, type, ID_ASS) )
{
pStk->SetError(CBotErrBadType1, p->GetStart());
goto error;
}
while (IsOfType( p, ID_COMMA )) // other elements?
{
pStk->SetStartError(p->GetStart());
CBotInstr* i = CBotTwoOpExpr::Compile(p, pStk) ;
if (nullptr == i)
{
goto error;
}
CBotTypResult valType = pStk->GetTypResult(CBotVar::GetTypeMode::CLASS_AS_INTRINSIC);
if (!TypeCompatible(valType, type, ID_ASS) )
{
pStk->SetError(CBotErrBadType1, p->GetStart());
goto error;
}
inst->m_expr->AddNext3b(i);
if (p->GetType() == ID_COMMA) continue;
if (p->GetType() == ID_CLBLK) break;
pStk->SetError(CBotErrClosePar, p);
goto error;
}
}
if (!IsOfType(p, ID_CLBLK) )
{
pStk->SetError(CBotErrClosePar, p->GetStart());
goto error;
}
return pStack->Return(inst, pStk);
}
error:
delete inst;
return pStack->Return(nullptr, pStk);
}
CBotInstr* CBotTwoOpExpr::Compile(CBotToken* &p, CBotCStack* pStack, int* pOperations)
{
int typeMask;
if ( pOperations == nullptr ) pOperations = ListOp;
int* pOp = pOperations;
while ( *pOp++ != 0 ); // follows the table
CBotCStack* pStk = pStack->TokenStack(); // one end of stack please
// search the intructions that may be suitable to the left of the operation
CBotInstr* left = (*pOp == 0) ?
CBotParExpr::Compile( p, pStk ) : // expression (...) left
CBotTwoOpExpr::Compile( p, pStk, pOp ); // expression A * B left
if (left == nullptr) return pStack->Return(nullptr, pStk); // if error, transmit
// did we expected the operand?
int typeOp = p->GetType();
if ( IsInList(typeOp, pOperations, typeMask) )
{
CBotTypResult type1, type2;
type1 = pStk->GetTypResult(); // what kind of the first operand?
if (typeOp == ID_LOGIC) // special case provided for: ? op1: op2;
{
if ( !type1.Eq(CBotTypBoolean) )
{
pStk->SetError( CBotErrBadType1, p);
return pStack->Return(nullptr, pStk);
}
CBotLogicExpr* inst = new CBotLogicExpr();
inst->m_condition = left;
p = p->GetNext(); // skip the token of the operation
inst->m_op1 = CBotExpression::Compile(p, pStk);
CBotToken* pp = p;
if ( inst->m_op1 == nullptr || !IsOfType( p, ID_DOTS ) )
{
pStk->SetError( CBotErrNoDoubleDots, p->GetStart());
delete inst;
return pStack->Return(nullptr, pStk);
}
type1 = pStk->GetTypResult();
inst->m_op2 = CBotExpression::Compile(p, pStk);
if ( inst->m_op2 == nullptr )
{
pStk->SetError( CBotErrNoTerminator, p->GetStart() );
delete inst;
return pStack->Return(nullptr, pStk);
}
type2 = pStk->GetTypResult();
if (!TypeCompatible(type1, type2))
{
pStk->SetError( CBotErrBadType2, pp );
delete inst;
return pStack->Return(nullptr, pStk);
}
pStk->SetType(type1); // the greatest of 2 types
return pStack->Return(inst, pStk);
}
CBotTwoOpExpr* inst = new CBotTwoOpExpr(); // element for operation
inst->SetToken(p); // stores the operation
p = p->GetNext(); // skip the token of the operation
// looking statements that may be suitable for right
if ( nullptr != (inst->m_rightop = CBotTwoOpExpr::Compile( p, pStk, pOp )) )
// expression (...) right
{
// there is an second operand acceptable
type2 = pStk->GetTypResult(); // what kind of results?
if ( type1.Eq(99) || type2.Eq(99) ) // operand is void
{
pStack->SetError(CBotErrBadType2, &inst->m_token);
delete inst;
return nullptr;
}
// what kind of result?
int TypeRes = std::max( type1.GetType(CBotTypResult::GetTypeMode::NULL_AS_POINTER), type2.GetType(CBotTypResult::GetTypeMode::NULL_AS_POINTER) );
if (typeOp == ID_ADD && type1.Eq(CBotTypString))
{
TypeRes = CBotTypString;
type2 = type1; // any type convertible chain
}
else if (typeOp == ID_ADD && type2.Eq(CBotTypString))
{
TypeRes = CBotTypString;
type1 = type2; // any type convertible chain
}
else if (!TypeOk(TypeRes, typeMask)) type1.SetType(99);// error of type
switch (typeOp)
{
case ID_LOG_OR:
case ID_LOG_AND:
case ID_TXT_OR:
case ID_TXT_AND:
case ID_EQ:
case ID_NE:
case ID_HI:
case ID_LO:
case ID_HS:
case ID_LS:
TypeRes = CBotTypBoolean;
}
if ( TypeCompatible (type1, type2, typeOp) ) // the results are compatible
{
// ok so, saves the operand in the object
inst->m_leftop = left;
// special for evaluation of the operations of the same level from left to right
while ( IsInList(p->GetType(), pOperations, typeMask) ) // same operation(s) follows?
{
typeOp = p->GetType();
CBotTwoOpExpr* i = new CBotTwoOpExpr(); // element for operation
i->SetToken(p); // stores the operation
i->m_leftop = inst; // left operand
type1 = TypeRes;
p = p->GetNext(); // advance after
i->m_rightop = CBotTwoOpExpr::Compile( p, pStk, pOp );
type2 = pStk->GetTypResult();
if ( !TypeCompatible (type1, type2, typeOp) ) // the results are compatible
{
pStk->SetError(CBotErrBadType2, &i->m_token);
delete i;
return pStack->Return(nullptr, pStk);
}
if ( TypeRes != CBotTypString ) // keep string conversion
TypeRes = std::max(type1.GetType(), type2.GetType());
inst = i;
}
CBotTypResult t(type1);
t.SetType(TypeRes);
// is a variable on the stack for the type of result
pStk->SetVar(CBotVar::Create("", t));
// and returns the requested object
return pStack->Return(inst, pStk);
}
pStk->SetError(CBotErrBadType2, &inst->m_token);
}
// in case of error, releases the elements
delete left;
delete inst;
// and transmits the error to the stack
return pStack->Return(nullptr, pStk);
}
// if we are not dealing with an operation + or -
// goes to that requested, the operand (left) found
// instead of the object "addition"
return pStack->Return(left, pStk);
}
CBotInstr* CBotParExpr::Compile(CBotToken* &p, CBotCStack* pStack)
{
CBotCStack* pStk = pStack->TokenStack();
pStk->SetStartError(p->GetStart());
// is it an expression in parentheses?
if (IsOfType(p, ID_OPENPAR))
{
CBotInstr* inst = CBotExpression::Compile(p, pStk);
if (nullptr != inst)
{
if (IsOfType(p, ID_CLOSEPAR))
{
return pStack->Return(inst, pStk);
}
pStk->SetError(CBotErrClosePar, p->GetStart());
}
delete inst;
return pStack->Return(nullptr, pStk);
}
// is this a unary operation?
CBotInstr* inst = CBotExprUnaire::Compile(p, pStk);
if (inst != nullptr || !pStk->IsOk())
return pStack->Return(inst, pStk);
// is it a variable name?
if (p->GetType() == TokenTypVar)
{
// this may be a method call without the "this." before
inst = CBotExprVar::CompileMethode(p, pStk);
if (inst != nullptr) return pStack->Return(inst, pStk);
// is it a procedure call?
inst = CBotInstrCall::Compile(p, pStk);
if (inst != nullptr || !pStk->IsOk())
return pStack->Return(inst, pStk);
CBotToken* pvar = p;
// no, it an "ordinaty" variable
inst = CBotExprVar::Compile(p, pStk);
CBotToken* pp = p;
// post incremented or decremented?
if (IsOfType(p, ID_INC, ID_DEC))
{
if (pStk->GetType() >= CBotTypBoolean)
{
pStk->SetError(CBotErrBadType1, pp);
delete inst;
return pStack->Return(nullptr, pStk);
}
// recompile the variable for read-only
delete inst;
p = pvar;
inst = CBotExprVar::Compile(p, pStk, CBotVar::ProtectionLevel::ReadOnly);
p = p->GetNext();
CBotPostIncExpr* i = new CBotPostIncExpr();
i->SetToken(pp);
i->m_instr = inst; // associated statement
return pStack->Return(i, pStk);
}
return pStack->Return(inst, pStk);
}
// pre increpemted or pre decremented?
CBotToken* pp = p;
if (IsOfType(p, ID_INC, ID_DEC))
{
CBotPreIncExpr* i = new CBotPreIncExpr();
i->SetToken(pp);
if (p->GetType() == TokenTypVar)
{
if (nullptr != (i->m_instr = CBotExprVar::Compile(p, pStk, CBotVar::ProtectionLevel::ReadOnly)))
{
if (pStk->GetType() >= CBotTypBoolean)
{
pStk->SetError(CBotErrBadType1, pp);
delete inst;
return pStack->Return(nullptr, pStk);
}
return pStack->Return(i, pStk);
}
delete i;
return pStack->Return(nullptr, pStk);
}
}
// is it a number or DefineNum?
if (p->GetType() == TokenTypNum ||
p->GetType() == TokenTypDef )
{
CBotInstr* inst = CBotExprLitNum::Compile(p, pStk);
return pStack->Return(inst, pStk);
}
// is this a chaine?
if (p->GetType() == TokenTypString)
{
CBotInstr* inst = CBotExprLitString::Compile(p, pStk);
return pStack->Return(inst, pStk);
}
// is a "true" or "false"
if (p->GetType() == ID_TRUE ||
p->GetType() == ID_FALSE )
{
CBotInstr* inst = CBotExprLitBool::Compile(p, pStk);
return pStack->Return(inst, pStk);
}
// is an object to be created with new
if (p->GetType() == ID_NEW)
{
CBotInstr* inst = CBotNew::Compile(p, pStk);
return pStack->Return(inst, pStk);
}
// is a null pointer
if (IsOfType(p, ID_NULL))
{
CBotInstr* inst = new CBotExprLitNull();
inst->SetToken(pp);
CBotVar* var = CBotVar::Create("", CBotTypNullPointer);
pStk->SetVar(var);
return pStack->Return(inst, pStk);
}
// is a number nan
if (IsOfType(p, ID_NAN))
{
CBotInstr* inst = new CBotExprLitNan();
inst->SetToken(pp);
CBotVar* var = CBotVar::Create("", CBotTypInt);
var->SetInit(CBotVar::InitType::IS_NAN);
pStk->SetVar(var);
return pStack->Return(inst, pStk);
}
return pStack->Return(nullptr, pStk);
}
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;
}
CBotInstr* CBotSwitch::Compile(CBotToken* &p, CBotCStack* pStack)
{
CBotSwitch* inst = new CBotSwitch(); // creates the object
CBotToken* pp = p; // preserves at the ^ token (starting position)
inst->SetToken(p);
if (!IsOfType(p, ID_SWITCH)) return nullptr; // should never happen
CBotCStack* pStk = pStack->TokenStack(pp); // un petit bout de pile svp
if ( IsOfType(p, ID_OPENPAR ) )
{
if ( nullptr != (inst->m_Value = CBotExpression::Compile( p, pStk )) )
{
if ( pStk->GetType() < CBotTypLong )
{
if ( IsOfType(p, ID_CLOSEPAR ) )
{
if ( IsOfType(p, ID_OPBLK ) )
{
IncLvl();
while( !IsOfType( p, ID_CLBLK ) )
{
if ( p->GetType() == ID_CASE || p->GetType() == ID_DEFAULT)
{
CBotCStack* pStk2 = pStk->TokenStack(p); // un petit bout de pile svp
CBotInstr* i = CBotCase::Compile( p, pStk2 );
if (i == nullptr)
{
delete inst;
return pStack->Return(nullptr, pStk2);
}
delete pStk2;
if ( inst->m_Block == nullptr ) inst->m_Block = i;
else inst->m_Block->AddNext(i);
continue;
}
if ( inst->m_Block == nullptr )
{
pStk->SetError(TX_NOCASE, p->GetStart());
delete inst;
return pStack->Return(nullptr, pStk);
}
CBotInstr* i = CBotBlock::CompileBlkOrInst( p, pStk, true );
if ( !pStk->IsOk() )
{
delete inst;
return pStack->Return(nullptr, pStk);
}
inst->m_Block->AddNext(i);
if ( p == nullptr )
{
pStk->SetError(TX_CLOSEBLK, -1);
delete inst;
return pStack->Return(nullptr, pStk);
}
}
DecLvl();
if ( inst->m_Block == nullptr )
{
pStk->SetError(TX_NOCASE, p->GetStart());
delete inst;
return pStack->Return(nullptr, pStk);
}
// the statement block is ok
return pStack->Return(inst, pStk); // return an object to the application
}
pStk->SetError( TX_OPENBLK, p->GetStart() );
}
pStk->SetError( TX_CLOSEPAR, p->GetStart() );
}
pStk->SetError( TX_BADTYPE, p->GetStart() );
}
}
pStk->SetError( TX_OPENPAR, p->GetStart());
delete inst; // error, frees up
return pStack->Return(nullptr, pStk); // no object, the error is on the stack
}
CBotInstr* CBotClassInst::Compile(CBotToken* &p, CBotCStack* pStack, CBotClass* pClass)
{
// seeks the corresponding classes
if ( pClass == NULL )
{
pStack->SetStartError(p->GetStart());
pClass = CBotClass::Find(p);
if ( pClass == NULL )
{
// not found? is bizare
pStack->SetError(TX_NOCLASS, p);
return NULL;
}
p = p->GetNext();
}
bool bIntrinsic = pClass->IsIntrinsic();
CBotTypResult type = CBotTypResult( bIntrinsic ? CBotTypIntrinsic : CBotTypPointer, pClass );
CBotClassInst* inst = static_cast<CBotClassInst*>(CompileArray(p, pStack, type));
if ( inst != NULL || !pStack->IsOk() ) return inst;
CBotCStack* pStk = pStack->TokenStack();
inst = new CBotClassInst();
/// \TODO Need to be revised and fixed after adding unit tests
CBotToken token(pClass->GetName(), CBotString(), p->GetStart(), p->GetEnd());
inst->SetToken(&token);
CBotToken* vartoken = p;
if ( NULL != (inst->m_var = CBotLeftExprVar::Compile( p, pStk )) )
{
(static_cast<CBotLeftExprVar*>(inst->m_var))->m_typevar = type;
if (pStk->CheckVarLocal(vartoken)) // redefinition of the variable
{
pStk->SetStartError(vartoken->GetStart());
pStk->SetError(TX_REDEFVAR, vartoken->GetEnd());
goto error;
}
if (IsOfType(p, ID_OPBRK)) // with any clues?
{
delete inst; // is not type CBotInt
p = vartoken; // returns to the variable name
// compiles declaration an array
inst = static_cast<CBotClassInst*>(CBotInstArray::Compile( p, pStk, type ));
if (!pStk->IsOk() )
{
pStk->SetError(TX_CLBRK, p->GetStart());
goto error;
}
goto suite; // no assignment, variable already created
}
CBotVar* var;
var = CBotVar::Create(vartoken->GetString(), type); // creates the instance
// var->SetClass(pClass);
var->SetUniqNum(
(static_cast<CBotLeftExprVar*>(inst->m_var))->m_nIdent = CBotVar::NextUniqNum());
// its attribute a unique number
pStack->AddVar(var); // placed on the stack
// look if there are parameters
inst->m_hasParams = (p->GetType() == ID_OPENPAR);
CBotVar* ppVars[1000];
inst->m_Parameters = CompileParams(p, pStk, ppVars);
if ( !pStk->IsOk() ) goto error;
// if there are parameters, is the equivalent to the stament "new"
// CPoint A ( 0, 0 ) is equivalent to
// CPoint A = new CPoint( 0, 0 )
// if ( NULL != inst->m_Parameters )
if ( inst->m_hasParams )
{
// the constructor is there?
// CBotString noname;
CBotTypResult r = pClass->CompileMethode(pClass->GetName(), var, ppVars, pStk, inst->m_nMethodeIdent);
delete pStk->TokenStack(); // releases the supplement stack
int typ = r.GetType();
if (typ == TX_UNDEFCALL)
{
// si le constructeur n'existe pas
if (inst->m_Parameters != NULL) // with parameters
{
pStk->SetError(TX_NOCONST, vartoken);
goto error;
}
typ = 0;
}
if (typ>20)
{
pStk->SetError(typ, vartoken->GetEnd());
goto error;
}
}
if (IsOfType(p, ID_ASS)) // with a assignment?
{
if (inst->m_hasParams)
{
pStk->SetError(TX_ENDOF, p->GetStart());
goto error;
}
if ( NULL == ( inst->m_expr = CBotTwoOpExpr::Compile( p, pStk )) )
{
goto error;
}
CBotClass* result = pStk->GetClass();
if ( !pStk->GetTypResult(1).Eq(CBotTypNullPointer) &&
( !pStk->GetTypResult(1).Eq(CBotTypPointer) ||
( result != NULL && !pClass->IsChildOf(result) ))) // type compatible ?
{
pStk->SetError(TX_BADTYPE, p->GetStart());
goto error;
}
// if ( !bIntrinsic ) var->SetPointer(pStk->GetVar()->GetPointer());
if ( !bIntrinsic )
{
// does not use the result on the stack, to impose the class
CBotVar* pvar = CBotVar::Create("", pClass);
var->SetPointer( pvar ); // variable already declared instance pointer
delete pvar; // removes the second pointer
}
var->SetInit(true); // marks the pointer as init
}
else if (inst->m_hasParams)
{
// creates the object on the "job" (\TODO "tas")
// with a pointer to the object
if ( !bIntrinsic )
{
CBotVar* pvar = CBotVar::Create("", pClass);
var->SetPointer( pvar ); // variable already declared instance pointer
delete pvar; // removes the second pointer
}
var->SetInit(2); // marks the pointer as init
}
suite:
if (IsOfType(p, ID_COMMA)) // several chained definitions
{
if ( NULL != ( inst->m_next = CBotClassInst::Compile(p, pStk, pClass) )) // compiles the following
{
return pStack->Return(inst, pStk);
}
}
if (IsOfType(p, ID_SEP)) // complete instruction
{
return pStack->Return(inst, pStk);
}
pStk->SetError(TX_ENDOF, p->GetStart());
}
error:
delete inst;
return pStack->Return(NULL, pStk);
}
CBotInstr* CBotDefArray::Compile(CBotToken* &p, CBotCStack* pStack, CBotTypResult type)
{
CBotCStack* pStk = pStack->TokenStack(p);
CBotDefArray* inst = new CBotDefArray();
CBotToken* vartoken = p;
inst->SetToken(vartoken);
// determinse the expression is valid for the item on the left side
if (nullptr != (inst->m_var = CBotLeftExprVar::Compile( p, pStk )))
{
if (pStk->CheckVarLocal(vartoken)) // redefinition of the variable?
{
pStk->SetError(CBotErrRedefVar, vartoken);
goto error;
}
CBotInstr* i;
while (IsOfType(p, ID_OPBRK))
{
pStk->SetStartError(p->GetStart());
if (p->GetType() != ID_CLBRK)
{
i = CBotExpression::Compile(p, pStk); // expression for the value
if (i == nullptr || pStk->GetType() != CBotTypInt) // must be a number
{
pStk->SetError(CBotErrBadIndex, p->GetStart());
goto error;
}
}
else
i = new CBotEmpty(); // if no special formula
inst->AddNext3b(i); // construct a list
type = CBotTypResult(CBotTypArrayPointer, type);
if (IsOfType(p, ID_CLBRK)) continue;
pStk->SetError(CBotErrCloseIndex, p->GetStart());
goto error;
}
CBotVar* var = CBotVar::Create(*vartoken, type); // create an instance
inst->m_typevar = type;
var->SetUniqNum(
(static_cast<CBotLeftExprVar*>(inst->m_var))->m_nIdent = CBotVar::NextUniqNum());
pStack->AddVar(var); // place it on the stack
if (IsOfType(p, ID_ASS)) // with an assignment
{
pStk->SetStartError(p->GetStart());
if ( IsOfType(p, ID_SEP) )
{
pStk->SetError(CBotErrNoExpression, p->GetPrev());
goto error;
}
if ( nullptr == (inst->m_listass = CBotListArray::Compile(p, pStk, type.GetTypElem())) )
{
if (pStk->IsOk())
{
inst->m_listass = CBotTwoOpExpr::Compile(p, pStk);
if (inst->m_listass == nullptr || !pStk->GetTypResult().Compare(type)) // compatible type ?
{
pStk->SetError(CBotErrBadType1, p->GetStart());
goto error;
}
}
}
if (pStk->IsOk()) while (true) // mark initialized
{
var = var->GetItem(0, true);
if (var == nullptr) break;
if (var->GetType() == CBotTypArrayPointer) continue;
if (var->GetType() <= CBotTypString) var->SetInit(CBotVar::InitType::DEF);
break;
}
}
if (pStk->IsOk()) return pStack->Return(inst, pStk);
}
error:
delete inst;
return pStack->Return(nullptr, pStk);
}
// pre-compile a new function
CBotFunction* CBotFunction::Compile1(CBotToken* &p, CBotCStack* pStack, CBotClass* pClass)
{
CBotFunction* func = new CBotFunction();
func->m_nFuncIdent = CBotVar::NextUniqNum();
CBotCStack* pStk = pStack->TokenStack(p, true);
while (true)
{
if ( IsOfType(p, ID_PUBLIC) )
{
// func->m_bPublic = true; // will be done in two passes
continue;
}
if ( IsOfType(p, ID_EXTERN) )
{
func->m_bExtern = true;
continue;
}
break;
}
func->m_retToken = *p;
func->m_retTyp = TypeParam(p, pStack); // type of the result
if (func->m_retTyp.GetType() >= 0)
{
CBotToken* pp = p;
func->m_token = *p;
// un nom de fonction est-il là ?
if (IsOfType(p, TokenTypVar))
{
if ( IsOfType( p, ID_DBLDOTS ) ) // method for a class
{
func->m_MasterClass = pp->GetString();
CBotClass* pClass = CBotClass::Find(pp);
if ( pClass == NULL )
{
pStk->SetError(TX_NOCLASS, pp);
goto bad;
}
pp = p;
func->m_token = *p;
if (!IsOfType(p, TokenTypVar)) goto bad;
}
func->m_Param = CBotDefParam::Compile( p, pStk );
if (pStk->IsOk())
{
// looks if the function exists elsewhere
if (( pClass != NULL || !pStack->CheckCall(pp, func->m_Param)) &&
( pClass == NULL || !pClass->CheckCall(pp, func->m_Param)) )
{
if (IsOfType(p, ID_OPBLK))
{
int level = 1;
// and skips the following instruction block
do
{
int type = p->GetType();
p = p->GetNext();
if (type == ID_OPBLK) level++;
if (type == ID_CLBLK) level--;
}
while (level > 0 && p != NULL);
return pStack->ReturnFunc(func, pStk);
}
pStk->SetError(TX_OPENBLK, p);
}
}
pStk->SetError(TX_REDEF, pp);
}
bad:
pStk->SetError(TX_NOFONC, p);
}
pStk->SetError(TX_NOTYP, p);
delete func;
return pStack->ReturnFunc(NULL, pStk);
}
// compiles a new function
// bLocal allows of the declaration of parameters on the same level
// as the elements belonging to the class for methods
CBotFunction* CBotFunction::Compile(CBotToken* &p, CBotCStack* pStack, CBotFunction* finput, bool bLocal)
{
CBotToken* pp;
CBotFunction* func = finput;
if ( func == NULL ) func = new CBotFunction();
CBotCStack* pStk = pStack->TokenStack(p, bLocal);
// func->m_nFuncIdent = CBotVar::NextUniqNum();
while (true)
{
if ( IsOfType(p, ID_PUBLIC) )
{
func->m_bPublic = true;
continue;
}
pp = p;
if ( IsOfType(p, ID_EXTERN) )
{
func->m_extern = pp; // for the position of the word "extern"
func->m_bExtern = true;
// func->m_bPublic = true; // therefore also public!
continue;
}
break;
}
func->m_retToken = *p;
// CBotClass* pClass;
func->m_retTyp = TypeParam(p, pStk); // type of the result
if (func->m_retTyp.GetType() >= 0)
{
CBotToken* pp = p;
func->m_token = *p;
if ( IsOfType(p, ID_NOT) )
{
CBotToken d("~" + p->GetString());
func->m_token = d;
}
// un nom de fonction est-il là ?
if (IsOfType(p, TokenTypVar))
{
if ( IsOfType( p, ID_DBLDOTS ) ) // method for a class
{
func->m_MasterClass = pp->GetString();
CBotClass* pClass = CBotClass::Find(pp);
if ( pClass == NULL ) goto bad;
// pp = p;
func->m_token = *p;
if (!IsOfType(p, TokenTypVar)) goto bad;
}
func->m_openpar = p;
func->m_Param = CBotDefParam::Compile( p, pStk );
func->m_closepar = p->GetPrev();
if (pStk->IsOk())
{
pStk->SetRetType(func->m_retTyp); // for knowledge what type returns
if (!func->m_MasterClass.IsEmpty())
{
// return "this" known
CBotVar* pThis = CBotVar::Create("this", CBotTypResult( CBotTypClass, func->m_MasterClass ));
pThis->SetInit(2);
// pThis->SetUniqNum(func->m_nThisIdent = -2); //CBotVar::NextUniqNum() will not
pThis->SetUniqNum(-2);
pStk->AddVar(pThis);
// initialize variables acording to This
// only saves the pointer to the first,
// the rest is chained
CBotVar* pv = pThis->GetItemList();
// int num = 1;
while (pv != NULL)
{
CBotVar* pcopy = CBotVar::Create(pv);
// pcopy->SetInit(2);
pcopy->Copy(pv);
pcopy->SetPrivate(pv->GetPrivate());
// pcopy->SetUniqNum(pv->GetUniqNum()); //num++);
pStk->AddVar(pcopy);
pv = pv->GetNext();
}
}
// and compiles the following instruction block
func->m_openblk = p;
func->m_Block = CBotBlock::Compile(p, pStk, false);
func->m_closeblk = p->GetPrev();
if ( pStk->IsOk() )
{
if ( func->m_bPublic ) // public function, return known for all
{
CBotFunction::AddPublic(func);
}
return pStack->ReturnFunc(func, pStk);
}
}
}
bad:
pStk->SetError(TX_NOFONC, p);
}
pStk->SetError(TX_NOTYP, p);
if ( finput == NULL ) delete func;
return pStack->ReturnFunc(NULL, pStk);
}