Class: Ast::Merge::Layout::Policy

Inherits:
Object
  • Object
show all
Defined in:
lib/ast/merge/layout/policy.rb

Overview

Named layout policy for whitespace comparison/rendering decisions.

Constant Summary collapse

PRESERVE_EXACT = 
:preserve_exact
BLANK_LINE_EQUIVALENT = 
:blank_line_equivalent
MODES = 
[PRESERVE_EXACT, BLANK_LINE_EQUIVALENT].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mode: PRESERVE_EXACT, metadata: {}, **options) ⇒ Policy

Returns a new instance of Policy.



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# File 'lib/ast/merge/layout/policy.rb', line 14

def initialize(mode: PRESERVE_EXACT, metadata: {}, **options)
  @mode = normalize_mode(mode)
  @metadata = metadata.merge(options).freeze
end

Instance Attribute Details

#metadata ⇒ Object (readonly)

Returns the value of attribute metadata.



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# File 'lib/ast/merge/layout/policy.rb', line 12

def metadata
  @metadata
end

#mode ⇒ Object (readonly)

Returns the value of attribute mode.



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# File 'lib/ast/merge/layout/policy.rb', line 12

def mode
  @mode
end

Instance Method Details

#blank_line_equivalent? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ast/merge/layout/policy.rb', line 23

def blank_line_equivalent?
  mode == BLANK_LINE_EQUIVALENT
end

#equivalent_blank_line?(left, right) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ast/merge/layout/policy.rb', line 27

def equivalent_blank_line?(left, right)
  if blank_line_equivalent?
    blank_line?(left) && blank_line?(right)
  else
    left == right
  end
end

#preserve_exact? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ast/merge/layout/policy.rb', line 19

def preserve_exact?
  mode == PRESERVE_EXACT
end

#to_h ⇒ Object 



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# File 'lib/ast/merge/layout/policy.rb', line 35

def to_h
  {
    mode: mode,
    metadata: metadata,
    exact_preservation: preserve_exact?,
    blank_line_equivalence: blank_line_equivalent?
  }
end