Class: SyntaxTree::YARV::OptAnd

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

Overview

### Summary

opt_and is a specialization of the opt_send_without_block instruction that occurs when the ‘&` operator is used. There is a fast path for if both operands are integers. 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

Constructor Details

#initialize(calldata) ⇒ OptAnd

Returns a new instance of OptAnd.



2867
2868
2869
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2867

def initialize(calldata)
  @calldata = calldata
end

Instance Attribute Details

#calldata ⇒ Object (readonly)

Returns the value of attribute calldata.



2865
2866
2867
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2865

def calldata
  @calldata
end

Instance Method Details

#==(other) ⇒ Object 



2883
2884
2885
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2883

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

#call(vm) ⇒ Object 



2903
2904
2905
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2903

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

#canonical ⇒ Object 



2899
2900
2901
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2899

def canonical
  Send.new(calldata, nil)
end

#deconstruct_keys(_keys) ⇒ Object 



2879
2880
2881
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2879

def deconstruct_keys(_keys)
  { calldata: calldata }
end

#disasm(fmt) ⇒ Object 



2871
2872
2873
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2871

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

#length ⇒ Object 



2887
2888
2889
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2887

def length
  2
end

#pops ⇒ Object 



2891
2892
2893
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2891

def pops
  2
end

#pushes ⇒ Object 



2895
2896
2897
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2895

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



2875
2876
2877
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2875

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