Class: SyntaxTree::YARV::OptDiv

Inherits:
Instruction show all
Defined in:
lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

‘opt_div` is a specialization of the `opt_send_without_block` instruction that occurs when the `/` operator is used. There are fast paths for if both operands are integers, or if both operands are floats. It pops both the receiver and the argument off the stack and pushes on the result.

### Usage

~~~ruby 2 / 3 ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Instruction

#branch_targets, #falls_through?, #leaves?, #side_effects?

Constructor Details

#initialize(calldata) ⇒ OptDiv

Returns a new instance of OptDiv.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2976

def initialize(calldata)
  @calldata = calldata
end

Instance Attribute Details

#calldata ⇒ Object (readonly)

Returns the value of attribute calldata.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2974

def calldata
  @calldata
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2992

def ==(other)
  other.is_a?(OptDiv) && other.calldata == calldata
end

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3012

def call(vm)
  canonical.call(vm)
end

#canonical ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3008

def canonical
  Send.new(calldata, nil)
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2988

def deconstruct_keys(_keys)
  { calldata: calldata }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2980

def disasm(fmt)
  fmt.instruction("opt_div", [fmt.calldata(calldata)])
end

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2996

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3000

def pops
  2
end

#pushes ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3004

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2984

def to_a(_iseq)
  [:opt_div, calldata.to_h]
end