class SyntaxTree::YARV::OptNilP

### Summary

‘opt_nil_p` is an optimization applied when the method `nil?` is called. It returns true immediately when the receiver is `nil` and defers to the `nil?` method in other cases. It pops the receiver off the stack and pushes on the result.

### Usage

~~~ruby “”.nil? ~~~

Attributes

calldata [R]

Public Class Methods

new (calldata)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3946
def initialize(calldata)
  @calldata = calldata
end

Public Instance Methods

== (other)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3962
def ==(other)
  other.is_a?(OptNilP) && other.calldata == calldata
end

call (vm)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3982
def call(vm)
  canonical.call(vm)
end

canonical ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3978
def canonical
  Send.new(calldata, nil)
end

deconstruct_keys (_keys)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3958
def deconstruct_keys(_keys)
  { calldata: calldata }
end

disasm (fmt)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3950
def disasm(fmt)
  fmt.instruction("opt_nil_p", [fmt.calldata(calldata)])
end

length ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3966
def length
  2
end

pops ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3970
def pops
  1
end

pushes ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3974
def pushes
  1
end

to_a (_iseq)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3954
def to_a(_iseq)
  [:opt_nil_p, calldata.to_h]
end