Class: SyntaxTree::YARV::ConcatToArray

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

Overview

### Summary

‘concattoarray` pops a single value off the stack and attempts to concat it to the Array on top of the stack. If the value is not an Array, it will be coerced into one.

### Usage

~~~ruby

1, *2

~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Instruction

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

Constructor Details

#initialize(object) ⇒ ConcatToArray

Returns a new instance of ConcatToArray.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 775

def initialize(object)
  @object = object
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 773

def object
  @object
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 791

def ==(other)
  other.is_a?(ConcatToArray) && other.object == object
end

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 807

def call(vm)
  array, value = vm.pop(2)
  vm.push(array.concat(Array(value)))
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 787

def deconstruct_keys(_keys)
  { object: object }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 779

def disasm(fmt)
  fmt.instruction("concattoarray", [fmt.object(object)])
end

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 795

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 799

def pops
  1
end

#pushes ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 803

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 783

def to_a(_iseq)
  [:concattoarray, object]
end