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.



5162
5163
5164
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5162

def initialize(name)
  @name = name
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



5160
5161
5162
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5160

def name
  @name
end

Instance Method Details

#==(other) ⇒ Object 



5178
5179
5180
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5178

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

#call(vm) ⇒ Object 



5190
5191
5192
5193
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5190

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

#deconstruct_keys(_keys) ⇒ Object 



5174
5175
5176
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5174

def deconstruct_keys(_keys)
  { name: name }
end

#disasm(fmt) ⇒ Object 



5166
5167
5168
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5166

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

#length ⇒ Object 



5182
5183
5184
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5182

def length
  2
end

#pops ⇒ Object 



5186
5187
5188
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5186

def pops
  2
end

#to_a(_iseq) ⇒ Object 



5170
5171
5172
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 5170

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