Class: SyntaxTree::YARV::OptMult

Inherits:

Object

• Object
• SyntaxTree::YARV::OptMult

Defined in:

lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

opt_mult is a specialization of the opt_send_without_block instruction that occurs when the ‘*` operator is used. There are fast paths for if both operands are integers or floats. It pops both the receiver and the argument off the stack and pushes on the result.

### Usage

~~~ruby 3 * 2 ~~~

Instance Attribute Summary

• #calldata ⇒ Object readonly

  Returns the value of attribute calldata.

Instance Method Summary

• #call(vm) ⇒ Object
• #canonical ⇒ Object
• #disasm(fmt) ⇒ Object
• #initialize(calldata) ⇒ OptMult constructor

  A new instance of OptMult.

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

Constructor Details

#initialize(calldata) ⇒ OptMult

Returns a new instance of OptMult.

# File 'lib/syntax_tree/yarv/instructions.rb', line 3441

def initialize(calldata)
  @calldata = calldata
end

Instance Attribute Details

#calldata ⇒ Object (readonly)

Returns the value of attribute calldata.

# File 'lib/syntax_tree/yarv/instructions.rb', line 3439

def calldata
  @calldata
end

Instance Method Details

#call(vm) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3469

def call(vm)
  canonical.call(vm)
end

#canonical ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3465

def canonical
  Send.new(calldata, nil)
end

#disasm(fmt) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3445

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

#length ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3453

def length
  2
end

#pops ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3457

def pops
  2
end

#pushes ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3461

def pushes
  1
end

#to_a(_iseq) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 3449

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