//
// This function returns the value of a particular field inside a constant structure from the symbol table.
// If there is an embedded/nested struct, it appropriately calls addConstStructNested or addConstStructFromAggr
// function and returns the parse-tree with the values of the embedded/nested struct.
//
TIntermTyped* TParseContext::addConstStruct(TString& identifier, TIntermTyped* node, TSourceLoc line)
{
TTypeList* fields = node->getType().getStruct();
TIntermTyped *typedNode;
int instanceSize = 0;
unsigned int index = 0;
TIntermConstantUnion *tempConstantNode = node->getAsConstantUnion();
for ( index = 0; index < fields->size(); ++index) {
if ((*fields)[index].type->getFieldName() == identifier) {
break;
} else {
instanceSize += (*fields)[index].type->getObjectSize();
}
}
if (tempConstantNode) {
constUnion* constArray = tempConstantNode->getUnionArrayPointer();
typedNode = intermediate.addConstantUnion(constArray+instanceSize, tempConstantNode->getType(), line); // type will be changed in the calling function
} else {
error(line, "Cannot offset into the structure", "Error", "");
recover();
return 0;
}
return typedNode;
}
bool CompareStruct(const TType& leftNodeType, constUnion* rightUnionArray, constUnion* leftUnionArray)
{
TTypeList* fields = leftNodeType.getStruct();
size_t structSize = fields->size();
int index = 0;
for (size_t j = 0; j < structSize; j++) {
int size = (*fields)[j].type->getObjectSize();
for (int i = 0; i < size; i++) {
if ((*fields)[j].type->getBasicType() == EbtStruct) {
if (!CompareStructure(*(*fields)[j].type, &rightUnionArray[index], &leftUnionArray[index]))
return false;
} else {
if (leftUnionArray[index] != rightUnionArray[index])
return false;
index++;
}
}
}
return true;
}
