Class: Holistic::Document::Unsaved::Record

Inherits:
Object
  • Object
show all
Defined in:
lib/holistic/document/unsaved/record.rb

Constant Summary collapse

LINE_BREAK = 
"\n"

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path:, content:) ⇒ Record

Returns a new instance of Record.



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# File 'lib/holistic/document/unsaved/record.rb', line 7

def initialize(path:, content:)
  @path = path
  @content = content
  @original_content = content.dup
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/holistic/document/unsaved/record.rb', line 5

def content
  @content
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/holistic/document/unsaved/record.rb', line 5

def path
  @path
end

Instance Method Details

#apply_change(change) ⇒ Object 



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# File 'lib/holistic/document/unsaved/record.rb', line 53

def apply_change(change)
  line = 0
  column = 0

  # first edition to the document is special because we can't iterate over the content to find the insert position.
  # there is nothing to iterate over.
  if @content.empty? && change.insertion?
    @content = change.text

    return
  end

  @content.each_char.with_index do |char, index|
    if change.insertion? && change.starts_on?(line, column)
      content.insert(index, change.text)

      return
    end

    if change.deletion? && change.starts_on?(line, column)
      content[index..index + change.range_length - 1] = ""

      return
    end

    if char == LINE_BREAK
      line += 1
      column = 0
    else
      column += 1
    end
  end

  # off-by-one error to insert at the of the document
  if change.insertion? && change.starts_on?(line, column)
    content.insert(@content.length, change.text)
  end
end

#expand_code(cursor) ⇒ Object 



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# File 'lib/holistic/document/unsaved/record.rb', line 13

def expand_code(cursor)
  line = 0
  column = 0

  @content.each_char.with_index do |char, index|
    if cursor.line == line && cursor.column == column + 1
      token_index = index

      while @content[token_index].match?(/[a-zA-Z0-9_\.:]/)
        token_index -= 1
      end

      return @content[token_index+1..index]
    end

    if char == LINE_BREAK
      line += 1
      column = 0
    else
      column += 1
    end
  end

  nil
end

#has_unsaved_changes? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holistic/document/unsaved/record.rb', line 47

def has_unsaved_changes?
  @original_content != @content
end

#mark_as_saved! ⇒ Object 



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# File 'lib/holistic/document/unsaved/record.rb', line 39

def mark_as_saved!
  @original_content = @content.dup
end

#restore_original_content! ⇒ Object 



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# File 'lib/holistic/document/unsaved/record.rb', line 43

def restore_original_content!
  @content = @original_content.dup
end