Class: SyntaxTree::YARV::DefineSMethod

Inherits:
Instruction show all
Defined in:
lib/syntax_tree/yarv/instructions.rb

Overview

### Summary

‘definesmethod` defines a method on the singleton class of the current value of `self`. It accepts two arguments. The first is the name of the method being defined. The second is the instruction sequence representing the body of the method. It pops the object off the stack that the method should be defined on.

### Usage

~~~ruby def self.value = “value” ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods inherited from Instruction

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

Constructor Details

#initialize(method_name, method_iseq) ⇒ DefineSMethod

Returns a new instance of DefineSMethod.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1193

def initialize(method_name, method_iseq)
  @method_name = method_name
  @method_iseq = method_iseq
end

Instance Attribute Details

#method_iseq ⇒ Object (readonly)

Returns the value of attribute method_iseq.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1191

def method_iseq
  @method_iseq
end

#method_name ⇒ Object (readonly)

Returns the value of attribute method_name.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1191

def method_name
  @method_name
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1214

def ==(other)
  other.is_a?(DefineSMethod) && other.method_name == method_name &&
    other.method_iseq == method_iseq
end

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1227

def call(vm)
  name = method_name
  nesting = vm.frame.nesting
  iseq = method_iseq

  vm
    .frame
    ._self
    .__send__(:define_singleton_method, name) do |*args, **kwargs, &block|
      vm.run_method_frame(
        name,
        nesting,
        iseq,
        self,
        *args,
        **kwargs,
        &block
      )
    end
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1210

def deconstruct_keys(_keys)
  { method_name: method_name, method_iseq: method_iseq }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1198

def disasm(fmt)
  fmt.enqueue(method_iseq)
  fmt.instruction(
    "definesmethod",
    [fmt.object(method_name), method_iseq.name]
  )
end

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1219

def length
  3
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1223

def pops
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1206

def to_a(_iseq)
  [:definesmethod, method_name, method_iseq.to_a]
end