Module engine

Expand description

Representation of the engine state and many of the details that implement the scoping

Structs§

ArgumentStack: Stores the argument context for calls in IR evaluation.
CachedFile: Unit of cached source code
Call: This is a HACK to help Command support both the old AST evaluator and the new IR evaluator at the same time. It should be removed once we are satisfied with the new evaluator.
Closure
EngineState: The core global engine state. This includes all global definitions as well as any global state that will persist for the whole session.
ErrorHandler: Describes an error handler stored during IR evaluation.
ErrorHandlerStack: Keeps track of error handlers pushed during evaluation of an IR block.
FileStack: Files being evaluated, arranged as a stack.
IsDebugging
OverlayFrame
ReplState
ScopeFrame
Sequence: Implements an atomically incrementing sequential series of numbers
Stack: A runtime value stack used during evaluation
StackCallArgGuard
StackCollectValueGuard
StackIoGuard
StateDelta: A delta (or change set) between the current global state and a possible future global state. Deltas can be applied to the global state to update it to contain both previous state and the state held within the delta.
StateWorkingSet: A temporary extension to the global state. This handles bridging between the global state and the additional declarations and scope changes that are not yet part of the global scope.
UnevaluatedCallInfo
Variable
Visibility: Tells whether a decl is visible or not