Class: SyntaxTree::YARV::InvokeSuper

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

Overview

### Summary

invokesuper is similar to the send instruction, except that it calls the super method. It pops the receiver and arguments off the stack and pushes the return value onto the stack.

### Usage

~~~ruby def foo

super

end ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(calldata, block_iseq) ⇒ InvokeSuper

Returns a new instance of InvokeSuper.



2279
2280
2281
2282
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2279

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

Instance Attribute Details

#block_iseq ⇒ Object (readonly)

Returns the value of attribute block_iseq.



2277
2278
2279
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2277

def block_iseq
  @block_iseq
end

#calldata ⇒ Object (readonly)

Returns the value of attribute calldata.



2277
2278
2279
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2277

def calldata
  @calldata
end

Instance Method Details

#==(other) ⇒ Object 



2300
2301
2302
2303
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2300

def ==(other)
  other.is_a?(InvokeSuper) && other.calldata == calldata &&
    other.block_iseq == block_iseq
end

#call(vm) ⇒ Object 



2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2322

def call(vm)
  block =
    if (iseq = block_iseq)
      frame = vm.frame
      ->(*args, **kwargs, &blk) do
        vm.run_block_frame(iseq, frame, *args, **kwargs, &blk)
      end
    end

  keywords =
    if calldata.kw_arg
      calldata.kw_arg.zip(vm.pop(calldata.kw_arg.length)).to_h
    else
      {}
    end

  arguments = vm.pop(calldata.argc)
  receiver = vm.pop

  method = receiver.method(vm.frame.name).super_method
  vm.push(method.call(*arguments, **keywords, &block))
end

#canonical ⇒ Object 



2318
2319
2320
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2318

def canonical
  self
end

#deconstruct_keys(_keys) ⇒ Object 



2296
2297
2298
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2296

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

#disasm(fmt) ⇒ Object 



2284
2285
2286
2287
2288
2289
2290
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2284

def disasm(fmt)
  fmt.enqueue(block_iseq) if block_iseq
  fmt.instruction(
    "invokesuper",
    [fmt.calldata(calldata), block_iseq&.name || "nil"]
  )
end

#length ⇒ Object 



2305
2306
2307
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2305

def length
  1
end

#pops ⇒ Object 



2309
2310
2311
2312
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2309

def pops
  argb = (calldata.flag?(CallData::CALL_ARGS_BLOCKARG) ? 1 : 0)
  argb + calldata.argc + 1
end

#pushes ⇒ Object 



2314
2315
2316
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2314

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



2292
2293
2294
 
# File 'lib/syntax_tree/yarv/instructions.rb', line 2292

def to_a(_iseq)
  [:invokesuper, calldata.to_h, block_iseq&.to_a]
end