Module engine 

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

CurrentJob

Stores the information about the background job currently being executed by this thread, if any

EngineState

The core global engine state. This includes all global definitions as well as any global state that will persist for the whole session.

EnvName

A String that’s case-insensitive for all environment variable names, used for environment variable names.

ErrorHandler

Describes an error handler stored during IR evaluation.

ErrorHandlerStack

Keeps track of error handlers pushed during evaluation of an IR block.

ExperimentalMarkerDeprecated

Marker type for tagging Command methods as experimental.

FileStack

Files being evaluated, arranged as a stack.

FrozenJob

IsDebugging

Jobs

Mailbox

OverlayFrame

PromptContents

The full set of rendered prompt strings, as the line editor draws them.

PromptState

Shared, thread-safe home for the interactive prompt’s rendered content.

ReplState

ScopeBindings

Name bindings introduced while parsing a single block/closure scope.

ScopeFrame

Sequence

Implements an atomically incrementing sequential series of numbers

Stack

A runtime value stack used during evaluation

StackCallArgGuard

StackCollectValueGuard

StackIoGuard

StackWithInvocation

RAII wrapper that records a custom command’s return-value OutDest on a Stack.

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.

ThreadJob

UnevaluatedCallInfo

Variable

Visibility

Tells whether a decl is visible or not

Enums

ArgType

Argument

Represents a fully evaluated argument to a call.

CallImpl

CommandType

Job

PromptSegment

Which prompt segment an asynchronous PromptState::set targets.

Redirection

VirtualPath

Constants

ENV_VARIABLE_ID

IN_VARIABLE_ID

LAST_RESULT_VAR_NAME

Identifier for the last-result special variable without the $ sigil.

LAST_VARIABLE_ID

Interactive last-result special variable.

NU_VARIABLE_ID

UNKNOWN_SPAN_ID

Statics

DEFAULT_OVERLAY_NAME

UPDATE_CWD

Configure whether the current working directory may be updated when EngineState::merge_env is called.

Traits

Command

CommandClone

Matcher

Functions

invalid_regex_value

Map a fancy-regex compile failure to ShellError::InvalidValue.

Type Aliases

EnvVars

Environment variables per overlay

FilterTag

Mail