Class: SyntaxTree::YARV::OptEq

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

Overview

### Summary

opt_eq is a specialization of the opt_send_without_block instruction that occurs when the == operator is used. Fast paths exist 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 ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(calldata) ⇒ OptEq 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3351

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 3349

def calldata
  @calldata
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3367

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

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3387

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

#canonical ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3383

def canonical
  Send.new(calldata, nil)
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3363

def deconstruct_keys(_keys)
  { calldata: calldata }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3355

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

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3371

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3375

def pops
  2
end

#pushes ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3379

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 3359

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