Class: Prosereflect::Transform::ReplaceAroundStep

Inherits:
Step
  • Object
show all
Defined in:
lib/prosereflect/transform/replace_around_step.rb

Overview

Replaces a range of the document with a slice of content, but also replaces the content before and after the gap. Used by lift and wrap operations.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Step

#merge, #pos

Constructor Details

#initialize(from, to, gap_from, gap_to, slice, insert, structure: false) ⇒ ReplaceAroundStep

Returns a new instance of ReplaceAroundStep.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 13

def initialize(from, to, gap_from, gap_to, slice, insert, structure: false)
  super()
  @from = from
  @to = to
  @gap_from = gap_from
  @gap_to = gap_to
  @slice = slice
  @insert = insert
  @structure = structure
end

Instance Attribute Details

#from ⇒ Object (readonly)

Returns the value of attribute from.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def from
  @from
end

#gap_from ⇒ Object (readonly)

Returns the value of attribute gap_from.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def gap_from
  @gap_from
end

#gap_to ⇒ Object (readonly)

Returns the value of attribute gap_to.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def gap_to
  @gap_to
end

#insert ⇒ Object (readonly)

Returns the value of attribute insert.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def insert
  @insert
end

#slice ⇒ Object (readonly)

Returns the value of attribute slice.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def slice
  @slice
end

#structure ⇒ Object (readonly)

Returns the value of attribute structure.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def structure
  @structure
end

#to ⇒ Object (readonly)

Returns the value of attribute to.



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 11

def to
  @to
end

Class Method Details

.from_json(_schema, json) ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 124

def self.from_json(_schema, json)
  from_val = json["from"]
  to_val = json["to"]
  gap_from_val = json["gapFrom"]
  gap_to_val = json["gapTo"]
  insert_val = json["insert"]
  structure_val = json["structure"] || false

  slice_json = json["slice"] || []
  slice_content = slice_json.map { |h| Prosereflect::Node.from_h(h) }
  slice = Slice.new(Fragment.new(slice_content))

  new(from_val, to_val, gap_from_val, gap_to_val, slice, insert_val, structure: structure_val)
end

Instance Method Details

#apply(doc) ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 24

def apply(doc)
  # Check structure constraint
  if @structure && (content_between(doc, @from, @gap_from) || content_between(doc, @gap_to, @to))
    return Result.fail("Structure gap-replace would overwrite content")
  end

  # Get the gap content
  gap = doc.slice(@gap_from, @gap_to)
  if gap.open_start || gap.open_end
    return Result.fail("Gap is not a flat range")
  end

  # Try to insert slice into gap
  inserted = @slice.insert_at(@insert, gap.content)
  unless inserted
    return Result.fail("Content does not fit in gap")
  end

  # Apply the replacement
  new_doc = apply_replace_around(doc, inserted)
  Result.ok(new_doc)
rescue StandardError => e
  Result.fail(e.message)
end

#get_map ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 49

def get_map
  StepMap.new([
                @from,
                @gap_from - @from,
                @insert,
                @gap_to,
                @to - @gap_to,
                @slice.size - @insert,
              ])
end

#invert(doc) ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 60

def invert(doc)
  gap = @gap_to - @gap_from
  removed = doc.slice(@from, @to).remove_between(
    @gap_from - @from,
    @gap_to - @from,
  )
  ReplaceAroundStep.new(
    @from,
    @from + @slice.size + gap,
    @from + @insert,
    @from + @insert + gap,
    removed,
    @gap_from - @from,
    @structure,
  )
end

#map(mapping) ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 77

def map(mapping)
  from_mapped = mapping.map_result(@from, 1)
  to_mapped = mapping.map_result(@to, -1)

  gap_from_mapped = if @from == @gap_from
                      from_mapped.pos
                    else
                      mapping.map(@gap_from, -1)
                    end

  gap_to_mapped = if @to == @gap_to
                    to_mapped.pos
                  else
                    mapping.map(@gap_to, 1)
                  end

  if (from_mapped.deleted && to_mapped.deleted) || gap_from_mapped < from_mapped.pos || gap_to_mapped > to_mapped.pos
    return nil
  end

  ReplaceAroundStep.new(
    from_mapped.pos,
    to_mapped.pos,
    gap_from_mapped,
    gap_to_mapped,
    @slice,
    @insert,
    @structure,
  )
end

#step_type ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 108

def step_type
  "replaceAround"
end

#to_json(*_args) ⇒ Object 



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# File 'lib/prosereflect/transform/replace_around_step.rb', line 112

def to_json(*_args)
  json = super
  json["from"] = @from
  json["to"] = @to
  json["gapFrom"] = @gap_from
  json["gapTo"] = @gap_to
  json["slice"] = @slice.content.to_a.map(&:to_h)
  json["insert"] = @insert
  json["structure"] = @structure
  json
end