Module: RuboCop::Cop::AutocorrectUnlessChangingAST

Included in:
Style::AndOr, Style::BlockDelimiters, Style::BracesAroundHashParameters, Style::Lambda, Style::Not
Defined in:
lib/rubocop/cop/mixin/autocorrect_unless_changing_ast.rb

Overview

This module does auto-correction of nodes that could become grammatically different after the correction. If the code change would alter the abstract syntax tree, it is not done.

Instance Method Summary collapse

Instance Method Details

#autocorrect(node) ⇒ Object 



9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
# File 'lib/rubocop/cop/mixin/autocorrect_unless_changing_ast.rb', line 9

def autocorrect(node)
  current_buffer_src = processed_source.buffer.source
  replaced_range = node.loc.expression
  pre = current_buffer_src[0...replaced_range.begin_pos]
  post = current_buffer_src[replaced_range.end_pos..-1]
  new_buffer_src = pre + rewrite_node(node) + post

  # Make the correction only if it doesn't change the AST for the buffer.
  if processed_source.ast != ProcessedSource.new(new_buffer_src).ast
    return
  end

  correction(node)
end