Class: SyntaxTree::YARV::DupHash

Inherits:

Instruction

• Object
• Instruction
• SyntaxTree::YARV::DupHash

Defined in:

lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

‘duphash` dups a Hash literal and pushes it onto the stack.

### Usage

~~~ruby { a: 1 } ~~~

Instance Attribute Summary

• #object ⇒ Object readonly

  Returns the value of attribute object.

Instance Method Summary

• #==(other) ⇒ Object
• #call(vm) ⇒ Object
• #deconstruct_keys(_keys) ⇒ Object
• #disasm(fmt) ⇒ Object
• #initialize(object) ⇒ DupHash constructor

  A new instance of DupHash.

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

Methods inherited from Instruction

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

Constructor Details

#initialize(object) ⇒ DupHash

Returns a new instance of DupHash.

# File 'lib/syntax_tree/yarv/instructions.rb', line 1299

def initialize(object)
  @object = object
end

Instance Attribute Details

#object ⇒ Object (readonly)

Returns the value of attribute object.

# File 'lib/syntax_tree/yarv/instructions.rb', line 1297

def object
  @object
end

Instance Method Details

#==(other) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1315

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

#call(vm) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1327

def call(vm)
  vm.push(object.dup)
end

#deconstruct_keys(_keys) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1311

def deconstruct_keys(_keys)
  { object: object }
end

#disasm(fmt) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1303

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

#length ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1319

def length
  2
end

#pushes ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1323

def pushes
  1
end

#to_a(_iseq) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 1307

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