Package net.hydromatic.morel.compile

Class Environments.SubEnvironment

java.lang.Object

net.hydromatic.morel.compile.Environment

net.hydromatic.morel.compile.Environments.SubEnvironment

Enclosing class:

Environments

static class Environments.SubEnvironment
extends Environment

Environment that inherits from a parent environment and adds one binding.

Field Summary

Fields

Modifier and Type	Field	Description
private Binding	binding
private Environment	parent

Constructor Summary

Constructors

Constructor	Description
SubEnvironment(Environment parent, Binding binding)

Method Summary

Modifier and Type	Method	Description
protected Environment	bind(Binding binding)
(package private) int	distance(int soFar, Core.NamedPat id)
@Nullable Binding	getOpt(String name)	Returns the binding of name if bound, null if not.
@Nullable Binding	getOpt(Core.NamedPat id)	Returns the binding of id if bound, null if not.
(package private) Environment	nearestAncestorNotObscuredBy(Set<Core.NamedPat> names)	If this environment only defines bindings in the given set, returns its parent.
String	toString()
(package private) void	visit(Consumer<Binding> consumer)	Visits every variable binding in this environment.

Methods inherited from class net.hydromatic.morel.compile.Environment

asString, bind, bindAll, forEachType, forEachValue, getValueMap, plus

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

parent

private final Environment parent

binding

private final Binding binding

Constructor Detail

SubEnvironment

SubEnvironment(Environment parent,
               Binding binding)

Method Detail

toString

public String toString()

Overrides:

toString in class Object

getOpt

public @Nullable Binding getOpt(String name)

Description copied from class: Environment

Returns the binding of name if bound, null if not.

Specified by:

getOpt in class Environment

getOpt

public @Nullable Binding getOpt(Core.NamedPat id)

Description copied from class: Environment

Returns the binding of id if bound, null if not.

Specified by:

getOpt in class Environment

bind

protected Environment bind(Binding binding)

Overrides:

bind in class Environment

visit

void visit(Consumer<Binding> consumer)

Description copied from class: Environment

Visits every variable binding in this environment.

Bindings that are obscured by more recent bindings of the same name are visited, but after the more obscuring bindings.

Specified by:

visit in class Environment

nearestAncestorNotObscuredBy

Environment nearestAncestorNotObscuredBy(Set<Core.NamedPat> names)

Description copied from class: Environment

If this environment only defines bindings in the given set, returns its parent. Never returns null. The empty environment returns itself.

Specified by:

nearestAncestorNotObscuredBy in class Environment

distance

int distance(int soFar,
             Core.NamedPat id)

Specified by:

distance in class Environment