class SyntaxTree::YARV::OptNEq

### Summary

‘opt_neq` is an optimization that tests whether two values at the top of the stack are not equal by testing their equality and calling the `!` on the result. This allows `opt_neq` to use the fast paths optimized in `opt_eq` when both operands are Integers, Floats, Symbols, or Strings. It pops both the receiver and the argument off the stack and pushes on the result.

### Usage

~~~ruby 2 != 2 ~~~

Attributes

eq_calldata [R]

neq_calldata [R]

Public Class Methods

new (eq_calldata, neq_calldata)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3829
def initialize(eq_calldata, neq_calldata)
  @eq_calldata = eq_calldata
  @neq_calldata = neq_calldata
end

Public Instance Methods

== (other)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3849
def ==(other)
  other.is_a?(OptNEq) && other.eq_calldata == eq_calldata &&
    other.neq_calldata == neq_calldata
end

call (vm)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3866
def call(vm)
  receiver, argument = vm.pop(2)
  vm.push(receiver != argument)
end

deconstruct_keys (_keys)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3845
def deconstruct_keys(_keys)
  { eq_calldata: eq_calldata, neq_calldata: neq_calldata }
end

disasm (fmt)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3834
def disasm(fmt)
  fmt.instruction(
    "opt_neq",
    [fmt.calldata(eq_calldata), fmt.calldata(neq_calldata)]
  )
end

length ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3854
def length
  3
end

pops ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3858
def pops
  2
end

pushes ()

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3862
def pushes
  1
end

to_a (_iseq)

Source

# File lib/syntax_tree/yarv/instructions.rb, line 3841
def to_a(_iseq)
  [:opt_neq, eq_calldata.to_h, neq_calldata.to_h]
end