Class: Rigor::Protection::Mutation

Inherits:
Struct
  • Object
show all
Defined in:
lib/rigor/protection/mutator.rb

Overview

One concrete edit: replace source bytes [start, stop) with ‘replacement`. `anchor` is the Prism node whose inferred type decides type-relevance —the call receiver whose contract the mutation could violate, or nil when there is no concrete receiver (implicit-self call, literal outside a call). `anchor_type` (the rendered receiver type) and `method_name` are filled in for reporting a surviving site; both may stay nil.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#anchor ⇒ Object

Returns the value of attribute anchor

Returns:

  • (Object) —

    the current value of anchor



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# File 'lib/rigor/protection/mutator.rb', line 22

def anchor
  @anchor
end

#anchor_type ⇒ Object

Returns the value of attribute anchor_type

Returns:

  • (Object) —

    the current value of anchor_type



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# File 'lib/rigor/protection/mutator.rb', line 22

def anchor_type
  @anchor_type
end

#expected_rule ⇒ Object

Returns the value of attribute expected_rule

Returns:

  • (Object) —

    the current value of expected_rule



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# File 'lib/rigor/protection/mutator.rb', line 22

def expected_rule
  @expected_rule
end

#label ⇒ Object

Returns the value of attribute label

Returns:

  • (Object) —

    the current value of label



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# File 'lib/rigor/protection/mutator.rb', line 22

def label
  @label
end

#line ⇒ Object

Returns the value of attribute line

Returns:

  • (Object) —

    the current value of line



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# File 'lib/rigor/protection/mutator.rb', line 22

def line
  @line
end

#method_name ⇒ Object

Returns the value of attribute method_name

Returns:

  • (Object) —

    the current value of method_name



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# File 'lib/rigor/protection/mutator.rb', line 22

def method_name
  @method_name
end

#operator ⇒ Object

Returns the value of attribute operator

Returns:

  • (Object) —

    the current value of operator



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# File 'lib/rigor/protection/mutator.rb', line 22

def operator
  @operator
end

#replacement ⇒ Object

Returns the value of attribute replacement

Returns:

  • (Object) —

    the current value of replacement



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# File 'lib/rigor/protection/mutator.rb', line 22

def replacement
  @replacement
end

#start ⇒ Object

Returns the value of attribute start

Returns:

  • (Object) —

    the current value of start



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# File 'lib/rigor/protection/mutator.rb', line 22

def start
  @start
end

#stop ⇒ Object

Returns the value of attribute stop

Returns:

  • (Object) —

    the current value of stop



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# File 'lib/rigor/protection/mutator.rb', line 22

def stop
  @stop
end

Instance Method Details

#apply(source) ⇒ Object 



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# File 'lib/rigor/protection/mutator.rb', line 27

def apply(source)
  prefix = source.byteslice(0, start)
  suffix = source.byteslice(stop, source.bytesize - stop) || ""
  "#{prefix}#{replacement}#{suffix}"
end