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fecff520d7
Previously, `state.mkList()` would set the type of the value to tList and allocate the list vector, but it would not initialize the values in the list. This has two problems: * If an exception occurs, the list is left in an undefined state. * More importantly, for multithreaded evaluation, if a value transitions from thunk to non-thunk, it should be final (i.e. other threads should be able to access the value safely). To address this, there now is a `ListBuilder` class (analogous to `BindingsBuilder`) to build the list vector prior to the call to `Value::mkList()`. Typical usage: auto list = state.buildList(size); for (auto & v : list) v = ... set value ...; vRes.mkList(list); |
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context.cc | ||
print.cc |