Class: SyntaxTree::YARV::SetConstant

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

Overview

Summary

setconstant pops two values off the stack: the value to set the constant to and the constant base to set it in.

Usage

Constant = 1

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Instruction

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

Constructor Details

#initialize(name) ⇒ SetConstant

Returns a new instance of SetConstant.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5015

def initialize(name)
  @name = name
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5013

def name
  @name
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5031

def ==(other)
  other.is_a?(SetConstant) && other.name == name
end

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5043

def call(vm)
  value, parent = vm.pop(2)
  parent.const_set(name, value)
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5027

def deconstruct_keys(_keys)
  { name: name }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5019

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

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5035

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5039

def pops
  2
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 5023

def to_a(_iseq)
  [:setconstant, name]
end