setVar method
Implementation
void setVar(String identifier, Value? value) {
if (identifier == "globals" || identifier == "locals") {
throw RuntimeException("can't assign to $identifier");
}
if (identifier == "self") {
self = value;
return;
}
variables ??= ValMap();
if (variables!.assignOverride == null ||
!variables!.assignOverride!(ValString(identifier), value)) {
variables![identifier] = value;
}
}