Class: SyntaxTree::YARV::InvokeBlock

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

Overview

### Summary

invokeblock invokes the block given to the current method. It pops the arguments for the block off the stack and pushes the result of running the block onto the stack.

### Usage

~~~ruby def foo

yield

end ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(calldata) ⇒ InvokeBlock

Returns a new instance of InvokeBlock.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1970

def initialize(calldata)
  @calldata = calldata
end

Instance Attribute Details

#calldata ⇒ Object (readonly)

Returns the value of attribute calldata.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1968

def calldata
  @calldata
end

Instance Method Details

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1998

def call(vm)
  vm.push(vm.frame_yield.block.call(*vm.pop(calldata.argc)))
end

#canonical ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1994

def canonical
  self
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1974

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

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1982

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1986

def pops
  calldata.argc
end

#pushes ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1990

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 1978

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