Class: SyntaxTree::YARV::ObjToString

Inherits:

Object

• Object
• SyntaxTree::YARV::ObjToString

Defined in:

lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

objtostring pops a value from the stack, calls to_s on that value and then pushes the result back to the stack.

It has various fast paths for classes like String, Symbol, Module, Class, etc. For everything else it calls to_s.

### Usage

~~~ruby “#5” ~~~

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) ⇒ ObjToString constructor

  A new instance of ObjToString.

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

Constructor Details

#initialize(calldata) ⇒ ObjToString

Returns a new instance of ObjToString.

# File 'lib/syntax_tree/yarv/instructions.rb', line 2425

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 2423

def calldata
  @calldata
end

Instance Method Details

#call(vm) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2453

def call(vm)
  vm.push(vm.pop.to_s)
end

#canonical ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2449

def canonical
  self
end

#disasm(fmt) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2429

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

#length ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2437

def length
  2
end

#pops ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2441

def pops
  1
end

#pushes ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2445

def pushes
  1
end

#to_a(_iseq) ⇒ Object

# File 'lib/syntax_tree/yarv/instructions.rb', line 2433

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