class SyntaxTree::YARV::GetClassVariable

### Summary

‘getclassvariable` looks for a class variable in the current class and pushes its value onto the stack. It uses an inline cache to reduce the need to lookup the class variable in the class hierarchy every time.

### Usage

~~~ruby @@class_variable ~~~

Attributes

cache [R]

name [R]

Public Class Methods

new (name, cache)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1652
def initialize(name, cache)
  @name = name
  @cache = cache
end

Public Instance Methods

== (other)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1672
def ==(other)
  other.is_a?(GetClassVariable) && other.name == name &&
    other.cache == cache
end

call (vm)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1685
def call(vm)
  clazz = vm.frame._self
  clazz = clazz.class unless clazz.is_a?(Class)
  vm.push(clazz.class_variable_get(name))
end

deconstruct_keys (_keys)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1668
def deconstruct_keys(_keys)
  { name: name, cache: cache }
end

disasm (fmt)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1657
def disasm(fmt)
  fmt.instruction(
    "getclassvariable",
    [fmt.object(name), fmt.inline_storage(cache)]
  )
end

length ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1677
def length
  3
end

pushes ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1681
def pushes
  1
end

to_a (_iseq)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 1664
def to_a(_iseq)
  [:getclassvariable, name, cache]
end