Class: Insta::Inline::FilePatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/insta/inline/file_patcher.rb,
sig/insta/inline/file_patcher.rbs

Class Method Summary collapse

Class Method Details

.apply_edits(source, edits) ⇒ String

: (String, Array) -> String

Parameters:

  • (String)
  • (Array[Edit])

Returns:

  • (String) 


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# File 'lib/insta/inline/file_patcher.rb', line 34

def self.apply_edits(source, edits)
  sorted = edits.sort_by { |e| -e.start_offset }
  result = source.dup

  sorted.each do |edit|
    before = result.byteslice(0, edit.start_offset) || ""
    after = result.byteslice(edit.end_offset..) || ""
    result = before + edit.replacement + after
  end

  result
end

.atomic_write(file_path, content) ⇒ void

This method returns an undefined value.

: (String, String) -> void

Parameters:

  • (String)
  • (String) 


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# File 'lib/insta/inline/file_patcher.rb', line 247

def self.atomic_write(file_path, content)
  directory = File.dirname(file_path)

  temp = Tempfile.new("insta", directory)
  temp.write(content)
  temp.close

  File.rename(temp.path.to_s, file_path)
rescue StandardError
  temp&.unlink
  raise
end

.patch(file_path, pending_entries) ⇒ String

: (String, Array) -> String

Parameters:

  • (String)
  • (Array[Inline::pending_entry])

Returns:

  • (String) 


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# File 'lib/insta/inline/file_patcher.rb', line 10

def self.patch(file_path, pending_entries)
  source = File.read(file_path)
  result = Prism.parse(source)
  edits = [] #: Array[Edit]

  pending_entries.each do |entry|
    line = entry[:line]
    content = entry[:content]
    type = entry[:type]

    finder = CallFinder.new(line)
    finder.visit(result.value)

    call = finder.found_call
    next unless call

    edit = build_edit(source, call, content, type)
    edits << edit if edit
  end

  apply_edits(source, edits)
end