class Myst::Scope

Direct Known Subclasses

Defined in:

myst/interpreter/scope.cr

Constructors

Instance Method Summary

Constructor Detail

def self.new(parent : Scope | Nil = nil) #

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Instance Method Detail

def [](key : String) : Value #

A non-nilable variant of #[]?. While this method may raise an exception, it is not considered a "public" exception (it is not meant to be reachable by userland code). Any instance where the exception propogates outside of the interpreter should be considered a bug.


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def []=(key : String, value : Value) : Value #

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def []?(key : String) : Value | Nil #

The shorthand access notations (#[]?, #[], #[]=) will all fall back to the parent scope if the value does not exist in this scope.

The longhand #has_key? and #assign only operate on this scope.


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def assign(key : String, value : Value) #

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def clear(*args, **options) #

Remove all values from this scope. Parent scopes are not affected.


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def clear(*args, **options, &) #

Remove all values from this scope. Parent scopes are not affected.


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def each(*args, **options) #

Remove all values from this scope. Parent scopes are not affected.


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def each(*args, **options, &) #

Remove all values from this scope. Parent scopes are not affected.


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def has_key?(key : String) #

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def parent : Scope | Nil #

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def parent=(parent : Scope | Nil) #

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def values : Hash(String, Value) #

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def values=(values : Hash(String, Value)) #

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