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//opt/alt/ruby34/share/ruby/syntax_suggest/ripper_errors.rb
# frozen_string_literal: true module SyntaxSuggest # Capture parse errors from Ripper # # Prism returns the errors with their messages, but Ripper # does not. To get them we must make a custom subclass. # # Example: # # puts RipperErrors.new(" def foo").call.errors # # => ["syntax error, unexpected end-of-input, expecting ';' or '\\n'"] class RipperErrors < Ripper attr_reader :errors # Comes from ripper, called # on every parse error, msg # is a string def on_parse_error(msg) @errors ||= [] @errors << msg end alias_method :on_alias_error, :on_parse_error alias_method :on_assign_error, :on_parse_error alias_method :on_class_name_error, :on_parse_error alias_method :on_param_error, :on_parse_error alias_method :compile_error, :on_parse_error def call @run_once ||= begin @errors = [] parse true end self end end end
