Class: SyntaxTree::YARV::ConcatArray

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

Overview

### Summary

concatarray concatenates the two Arrays on top of the stack.

It coerces the two objects at the top of the stack into Arrays by calling to_a if necessary, and makes sure to dup the first Array if it was already an Array, to avoid mutating it when concatenating.

### Usage

~~~ruby

1, *2

~~~

Instance Method Summary collapse

Instance Method Details

#==(other) ⇒ Object 



729
730
731
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 729

def ==(other)
  other.is_a?(ConcatArray)
end

#call(vm) ⇒ Object 



749
750
751
752
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 749

def call(vm)
  left, right = vm.pop(2)
  vm.push([*left, *right])
end

#canonical ⇒ Object 



745
746
747
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 745

def canonical
  self
end

#deconstruct_keys(_keys) ⇒ Object 



725
726
727
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 725

def deconstruct_keys(_keys)
  {}
end

#disasm(fmt) ⇒ Object 



717
718
719
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 717

def disasm(fmt)
  fmt.instruction("concatarray")
end

#length ⇒ Object 



733
734
735
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 733

def length
  1
end

#pops ⇒ Object 



737
738
739
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 737

def pops
  2
end

#pushes ⇒ Object 



741
742
743
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 741

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



721
722
723
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 721

def to_a(_iseq)
  [:concatarray]
end