Class: SyntaxTree::YARV::OptStrUMinus

Inherits:

Instruction

• Object
• Instruction
• SyntaxTree::YARV::OptStrUMinus

Defined in:

lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

‘opt_str_uminus` pushes a frozen known string value with no interpolation onto the stack. If the method gets overridden, this will fall back to a send.

### Usage

~~~ruby -“string” ~~~

Instance Attribute Summary

• #calldata ⇒ Object readonly

  Returns the value of attribute calldata.

• #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, calldata) ⇒ OptStrUMinus constructor

  A new instance of OptStrUMinus.

• #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, calldata) ⇒ OptStrUMinus

Returns a new instance of OptStrUMinus.

# File 'lib/syntax_tree/yarv/instructions.rb', line 4340

def initialize(object, calldata)
  @object = object
  @calldata = calldata
end

Instance Attribute Details

#calldata ⇒ Object (readonly)

Returns the value of attribute calldata.

# File 'lib/syntax_tree/yarv/instructions.rb', line 4338

def calldata
  @calldata
end

#object ⇒ Object (readonly)

Returns the value of attribute object.

# File 'lib/syntax_tree/yarv/instructions.rb', line 4338

def object
  @object
end

Instance Method Details

#==(other) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4360

def ==(other)
  other.is_a?(OptStrUMinus) && other.object == object &&
    other.calldata == calldata
end

#call(vm) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4373

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

#deconstruct_keys(_keys) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4356

def deconstruct_keys(_keys)
  { object: object, calldata: calldata }
end

#disasm(fmt) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4345

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

#length ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4365

def length
  3
end

#pushes ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4369

def pushes
  1
end

#to_a(_iseq) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 4352

def to_a(_iseq)
  [:opt_str_uminus, object, calldata.to_h]
end