Class: SyntaxTree::YARV::NewRange

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

Overview

### Summary

newrange creates a new range object from the top two values on the stack. It pops both of them off, and then pushes on the new range. It takes one argument which is 0 if the end is included or 1 if the end value is excluded.

### Usage

~~~ruby x = 0 y = 1 p (x..y), (x…y) ~~~

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(exclude_end) ⇒ NewRange

Returns a new instance of NewRange.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2643

def initialize(exclude_end)
  @exclude_end = exclude_end
end

Instance Attribute Details

#exclude_end ⇒ Object (readonly)

Returns the value of attribute exclude_end.



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2641

def exclude_end
  @exclude_end
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2659

def ==(other)
  other.is_a?(NewRange) && other.exclude_end == exclude_end
end

#call(vm) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2679

def call(vm)
  vm.push(Range.new(*vm.pop(2), exclude_end == 1))
end

#canonical ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2675

def canonical
  self
end

#deconstruct_keys(_keys) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2655

def deconstruct_keys(_keys)
  { exclude_end: exclude_end }
end

#disasm(fmt) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2647

def disasm(fmt)
  fmt.instruction("newrange", [fmt.object(exclude_end)])
end

#length ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2663

def length
  2
end

#pops ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2667

def pops
  2
end

#pushes ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2671

def pushes
  1
end

#to_a(_iseq) ⇒ Object 



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# File 'lib/syntax_tree/yarv/instructions.rb', line 2651

def to_a(_iseq)
  [:newrange, exclude_end]
end