Class: SyntaxTree::YARV::SetConstant

Inherits:

Object

• Object
• SyntaxTree::YARV::SetConstant

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

~~~ruby Constant = 1 ~~~

Instance Attribute Summary

• #name ⇒ Object readonly

  Returns the value of attribute name.

Instance Method Summary

• #call(vm) ⇒ Object
• #canonical ⇒ Object
• #disasm(fmt) ⇒ Object
• #initialize(name) ⇒ SetConstant constructor

  A new instance of SetConstant.

• #length ⇒ Object
• #pops ⇒ Object
• #pushes ⇒ Object
• #to_a(_iseq) ⇒ Object

Constructor Details

#initialize(name) ⇒ SetConstant

# File 'lib/syntax_tree/yarv/instructions.rb', line 4675

def initialize(name)
  @name = name
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.

# File 'lib/syntax_tree/yarv/instructions.rb', line 4673

def name
  @name
end

Instance Method Details

#call(vm) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4703

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

#canonical ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4699

def canonical
  self
end

#disasm(fmt) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4679

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

#length ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4687

def length
  2
end

#pops ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4691

def pops
  2
end

#pushes ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4695

def pushes
  0
end

#to_a(_iseq) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4683

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