@Override
public void marshal(ITypeMarshalBuffer buffer, boolean includeValue) throws CoreException {
short firstBytes = ITypeMarshalBuffer.EVAL_FUNCTION_SET;
if (fQualified) firstBytes |= FLAG_QUALIFIED;
if (fAddressOf) firstBytes |= FLAG_ADDRESS_OF;
if (fFunctionSet != null) {
firstBytes |= FLAG_HAS_FUNCTION_SET;
final ICPPFunction[] bindings = fFunctionSet.getBindings();
final ICPPTemplateArgument[] args = fFunctionSet.getTemplateArguments();
if (args != null) firstBytes |= FLAG_HAS_TEMPLATE_ARGS;
buffer.putShort(firstBytes);
buffer.putInt(bindings.length);
for (ICPPFunction binding : bindings) {
buffer.marshalBinding(binding);
}
if (args != null) {
buffer.putInt(args.length);
for (ICPPTemplateArgument arg : args) {
buffer.marshalTemplateArgument(arg);
}
}
buffer.marshalType(fImpliedObjectType);
} else {
buffer.putShort(firstBytes);
buffer.putCharArray(fName);
}
marshalTemplateDefinition(buffer);
}
/**
* Attempts to resolve the function using the parameters of a function call.
*
* @param args the arguments of a function call
* @param point the name lookup context
* @return the resolved or the original evaluation depending on whether function resolution
* succeeded or not
*/
public ICPPEvaluation resolveFunction(ICPPEvaluation[] args, IASTNode point) {
// Set up the LookupData.
LookupData data;
ICPPFunction[] functions = null;
if (fFunctionSet == null) {
data = new LookupData(fName, null, point);
} else {
functions = fFunctionSet.getBindings();
data =
new LookupData(
functions[0].getNameCharArray(), fFunctionSet.getTemplateArguments(), point);
data.foundItems = functions;
}
data.setFunctionArguments(false, args);
if (fImpliedObjectType != null) data.setImpliedObjectType(fImpliedObjectType);
try {
// Perform ADL if appropriate.
if (!fQualified
&& fImpliedObjectType == null
&& !data.hasTypeOrMemberFunctionOrVariableResult()) {
CPPSemantics.doKoenigLookup(data);
Object[] foundItems = (Object[]) data.foundItems;
if (foundItems != null && (functions == null || foundItems.length > functions.length)) {
// ADL found additional functions.
int start = functions == null ? 0 : functions.length;
for (int i = start; i < foundItems.length; i++) {
Object obj = foundItems[i];
if (obj instanceof ICPPFunction) {
functions = ArrayUtil.append(ICPPFunction.class, functions, (ICPPFunction) obj);
} else if (obj instanceof ICPPClassType) {
functions =
ArrayUtil.addAll(
ICPPFunction.class,
functions,
ClassTypeHelper.getConstructors((ICPPClassType) obj, point));
}
}
// doKoenigLookup() may introduce duplicates into the result. These must be
// eliminated to avoid resolveFunction() reporting an ambiguity. (Normally, when
// lookup() and doKoenigLookup() are called on the same LookupData object, the
// two functions coordinate using data stored in that object to eliminate
// duplicates, but in this case lookup() was called before with a different
// LookupData object and now we are only calling doKoenigLookup()).
functions = ArrayUtil.removeDuplicates(functions);
}
}
// Perform template instantiation and overload resolution.
IBinding binding = CPPSemantics.resolveFunction(data, functions, true);
if (binding instanceof ICPPFunction && !(binding instanceof ICPPUnknownBinding))
return new EvalBinding(binding, null, getTemplateDefinition());
} catch (DOMException e) {
CCorePlugin.log(e);
}
return this;
}
@Override
public ICPPEvaluation instantiate(
ICPPTemplateParameterMap tpMap,
int packOffset,
ICPPTypeSpecialization within,
int maxdepth,
IASTNode point) {
if (fFunctionSet == null) return this;
ICPPTemplateArgument[] originalArguments = fFunctionSet.getTemplateArguments();
ICPPTemplateArgument[] arguments = originalArguments;
if (originalArguments != null)
arguments = instantiateArguments(originalArguments, tpMap, packOffset, within, point);
IBinding originalOwner = fFunctionSet.getOwner();
IBinding owner = originalOwner;
if (owner instanceof ICPPUnknownBinding) {
owner = resolveUnknown((ICPPUnknownBinding) owner, tpMap, packOffset, within, point);
} else if (owner instanceof ICPPClassTemplate) {
owner =
resolveUnknown(
CPPTemplates.createDeferredInstance((ICPPClassTemplate) owner),
tpMap,
packOffset,
within,
point);
} else if (owner instanceof IType) {
IType type = CPPTemplates.instantiateType((IType) owner, tpMap, packOffset, within, point);
if (type instanceof IBinding) owner = (IBinding) type;
}
ICPPFunction[] originalFunctions = fFunctionSet.getBindings();
ICPPFunction[] functions = originalFunctions;
if (owner instanceof ICPPClassSpecialization && owner != originalOwner) {
functions = new ICPPFunction[originalFunctions.length];
for (int i = 0; i < originalFunctions.length; i++) {
functions[i] =
(ICPPFunction)
CPPTemplates.createSpecialization(
(ICPPClassSpecialization) owner, originalFunctions[i], point);
}
}
// No need to instantiate the implied object type. An EvalFunctioNSet should only be created
// with an implied object type when that type is not dependent.
if (Arrays.equals(arguments, originalArguments) && functions == originalFunctions) return this;
return new EvalFunctionSet(
new CPPFunctionSet(functions, arguments, null),
fQualified,
fAddressOf,
fImpliedObjectType,
getTemplateDefinition());
}
@Override
public boolean isTypeDependent() {
if (fFunctionSet == null) return true;
final ICPPTemplateArgument[] args = fFunctionSet.getTemplateArguments();
if (args != null) {
for (ICPPTemplateArgument arg : args) {
if (CPPTemplates.isDependentArgument(arg)) return true;
}
}
for (ICPPFunction f : fFunctionSet.getBindings()) {
if (f instanceof ICPPUnknownBinding) return true;
}
return false;
}
@Override
public boolean isConstantExpression(IASTNode point) {
if (fFunctionSet == null) return false;
for (ICPPFunction f : fFunctionSet.getBindings()) {
if (!f.isConstexpr()) {
return false;
}
}
return true;
}
@Override
public int determinePackSize(ICPPTemplateParameterMap tpMap) {
int r = CPPTemplates.PACK_SIZE_NOT_FOUND;
if (fFunctionSet != null) {
ICPPTemplateArgument[] templateArguments = fFunctionSet.getTemplateArguments();
for (ICPPTemplateArgument arg : templateArguments) {
r = CPPTemplates.combinePackSize(r, CPPTemplates.determinePackSize(arg, tpMap));
}
}
return r;
}