private Modifier(JObject spec, OpMode opMode, IReadOnlyDictionary <string, IFunction> functionsMap)
{
if (spec == null)
{
throw new SpecException(opMode.GetName() + " expected a spec of Map type, got 'null'.");
}
if (functionsMap == null || functionsMap.Count == 0)
{
throw new SpecException(opMode.GetName() + " expected a populated functions' map type, got " + (functionsMap == null ? "null" : "empty"));
}
TemplatrSpecBuilder templatrSpecBuilder = new TemplatrSpecBuilder(opMode, functionsMap);
_rootSpec = new ModifierCompositeSpec(ROOT_KEY, spec, opMode, templatrSpecBuilder);
}
public ModifierCompositeSpec(string key, JObject spec, OpMode opMode, TemplatrSpecBuilder specBuilder) :
base(key, opMode)
{
var literals = new Dictionary <string, IBaseSpec>();
var computed = new List <ModifierSpec>();
List <ModifierSpec> children = specBuilder.CreateSpec(spec);
// remember max explicit index from spec to expand input array at runtime
// need to validate spec such that it does not specify both array and literal path element
int maxExplicitIndexFromSpec = -1, confirmedMapAtIndex = -1, confirmedArrayAtIndex = -1;
for (int i = 0; i < children.Count; i++)
{
var childSpec = children[i];
var childPathElement = childSpec.GetPathElement();
// for every child,
// a) mark current index as either must be map or must be array
// b) mark it as literal or computed
// c) if arrayPathElement,
// - make sure its an explicit index type
// - save the max explicit index in spec
if (childPathElement is LiteralPathElement)
{
confirmedMapAtIndex = i;
literals[childPathElement.RawKey] = childSpec;
}
else if (childPathElement is ArrayPathElement childArrayPathElement)
{
confirmedArrayAtIndex = i;
if (!childArrayPathElement.IsExplicitArrayIndex())
{
throw new SpecException(opMode.GetName() + " RHS only supports explicit Array path element");
}
int?explicitIndex = childArrayPathElement.GetExplicitArrayIndex();
// if explicit index from spec also enforces "[...]?" don't bother using that as max index
if (!childSpec.GetCheckValue())
{
maxExplicitIndexFromSpec = Math.Max(maxExplicitIndexFromSpec, explicitIndex ?? 0);
}
literals[explicitIndex.ToString()] = childSpec;
}
else
{
// StarPathElements evaluates to string keys in a Map, EXCEPT StarAllPathElement
// which can be both all keys in a map or all indexes in a list
if (!(childPathElement is StarAllPathElement))
{
confirmedMapAtIndex = i;
}
computed.Add(childSpec);
}
// Bail as soon as both confirmedMapAtIndex & confirmedArrayAtIndex is set
if (confirmedMapAtIndex > -1 && confirmedArrayAtIndex > -1)
{
throw new SpecException(opMode.GetName() + " RHS cannot mix int array index and string map key, defined spec for " + key + " contains: " +
children[confirmedMapAtIndex].GetPathElement().GetCanonicalForm() + " conflicting " +
children[confirmedArrayAtIndex].GetPathElement().GetCanonicalForm());
}
}
// set the dataType from calculated indexes
_specDataType = DataType.DetermineDataType(confirmedArrayAtIndex, confirmedMapAtIndex, maxExplicitIndexFromSpec);
// Only the computed children need to be sorted
computed.Sort(_computedKeysComparator);
computed.TrimExcess();
_literalChildren = literals;
_computedChildren = computed.AsReadOnly();
// extract generic execution strategy
_executionStrategy = DetermineExecutionStrategy();
}
