// Generate code that initializes the elements of an array.
// Expects an array ref on the top of the stack.
dt_t* BackEnd::toDt(ArrayInitializer& init)
{
ModuleEmitter& modScope = getModuleScope(init.loc);
IRState* irstate = modScope.getCurrentIRState();
if (!irstate)
{
fatalError(init.loc, "null IR state");
}
irstate->getBlock();
VarDeclaration* varDecl = irstate->hasVarDecl();
if (!varDecl)
{
BackEnd::fatalError(init.loc, "initializer expects var decl");
}
TYPE& type = toILType(init.loc, varDecl->type);
ArrayType* aType = type.isArrayType();
if (!aType)
{
BackEnd::fatalError(init.loc, "initializer expects array type");
}
aType->init(*irstate, *varDecl, init.dim);
block& blk = irstate->getBlock();
IRState temp(blk);
ArrayAdapter<Initializer*> value(init.value);
ArrayAdapter<Expression*> index(init.index);
//
// and here's where the elements are initialized:
//
for (size_t i = 0; i != init.dim; ++i)
{
if (i >= value.size() || i >= index.size())
{
assert(false);
break;
}
if (i + 1 != init.dim)
{
// For each element duplicate the reference to the array
// on the top of the stack, so that one is left on the stack for
// the next element to use -- except when reaching the last element
Instruction::create(blk, IL_dup);
}
#if 0
//todo:revisit, indices may be null, what are they useful for anyway?
DEREF(index[i]).toElem(irstate);
#else
Const<int>::create(*TYPE::Int32, i, blk, init.loc);
#endif
auto_ptr<dt_t>(DEREF(value[i]).toDt());
ArrayElemAccess::store(blk, aType->elemTYPE());
}
return NULL;
}
NewArray::NewArray(const ArrayType& at) : elemTYPE_(at.elemTYPE())
{
}