typeArgumentOf function

DartType typeArgumentOf(DartObject object, [ int index = 0 ])

Returns the bound DartType from the instance object.

For example for the following code:

const foo = const <String>[];
const bar = const ['A string'];

... both foo and bar should return the DartType for String.

Implementation

DartType typeArgumentOf(DartObject object, [int index = 0]) {
  var type = object.type;
  if (type is ParameterizedType) {
    var typeArguments = type.typeArguments;
    if (typeArguments.isNotEmpty) {
      return type.typeArguments[index];
    }
  }
  return DynamicTypeImpl.instance;
}