class RuboCop::Cop::Corrector
This class takes a source buffer and rewrite its source based on the different correction rules supplied.
Important! The nodes modified by the corrections should be part of the AST of the source_buffer.
Constants
- NOOP_CONSUMER
Public Class Methods
@param source [Parser::Source::Buffer, or anything
leading to one via `(processed_source.)buffer`] corrector = Corrector.new(cop)
# File lib/rubocop/cop/corrector.rb, line 18 def initialize(source) source = self.class.source_buffer(source) super( source, different_replacements: :raise, swallowed_insertions: :raise, crossing_deletions: :accept ) # Don't print warnings to stderr if corrections conflict with each other diagnostics.consumer = NOOP_CONSUMER end
Duck typing for get to a ::Parser::Source::Buffer
# File lib/rubocop/cop/corrector.rb, line 68 def self.source_buffer(source) source = source.processed_source if source.respond_to?(:processed_source) source = source.buffer if source.respond_to?(:buffer) source = source.source_buffer if source.respond_to?(:source_buffer) unless source.is_a? ::Parser::Source::Buffer raise TypeError, 'Expected argument to lead to a Parser::Source::Buffer ' \ "but got #{source.inspect}" end source end
Public Instance Methods
Removes ‘size` characters from the beginning of the given range. If `size` is greater than the size of `range`, the removed region can overrun the end of `range`.
@param [Parser::Source::Range, RuboCop::AST::Node] range or node @param [Integer] size
# File lib/rubocop/cop/corrector.rb, line 49 def remove_leading(node_or_range, size) range = to_range(node_or_range) to_remove = range.with(end_pos: range.begin_pos + size) remove(to_remove) end
Removes ‘size` characters prior to the source range.
@param [Parser::Source::Range, RuboCop::AST::Node] range or node @param [Integer] size
# File lib/rubocop/cop/corrector.rb, line 37 def remove_preceding(node_or_range, size) range = to_range(node_or_range) to_remove = range.with(begin_pos: range.begin_pos - size, end_pos: range.begin_pos) remove(to_remove) end
Removes ‘size` characters from the end of the given range. If `size` is greater than the size of `range`, the removed region can overrun the beginning of `range`.
@param [Parser::Source::Range, RuboCop::AST::Node] range or node @param [Integer] size
# File lib/rubocop/cop/corrector.rb, line 61 def remove_trailing(node_or_range, size) range = to_range(node_or_range) to_remove = range.with(begin_pos: range.end_pos - size) remove(to_remove) end