diff options
Diffstat (limited to 'lib/irb/nesting_parser.rb')
| -rw-r--r-- | lib/irb/nesting_parser.rb | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/lib/irb/nesting_parser.rb b/lib/irb/nesting_parser.rb deleted file mode 100644 index c1c9a5cc76..0000000000 --- a/lib/irb/nesting_parser.rb +++ /dev/null @@ -1,239 +0,0 @@ -# frozen_string_literal: true -module IRB - module NestingParser - IGNORE_TOKENS = %i[on_sp on_ignored_nl on_comment on_embdoc_beg on_embdoc on_embdoc_end] - - class << self - # Scan each token and call the given block with array of token and other information for parsing - def scan_opens(tokens) - opens = [] - pending_heredocs = [] - first_token_on_line = true - tokens.each do |t| - skip = false - last_tok, state, args = opens.last - case state - when :in_alias_undef - skip = t.event == :on_kw - when :in_unquoted_symbol - unless IGNORE_TOKENS.include?(t.event) - opens.pop - skip = true - end - when :in_lambda_head - opens.pop if t.event == :on_tlambeg || (t.event == :on_kw && t.tok == 'do') - when :in_method_head - unless IGNORE_TOKENS.include?(t.event) - next_args = [] - body = nil - if args.include?(:receiver) - case t.event - when :on_lparen, :on_ivar, :on_gvar, :on_cvar - # def (receiver). | def @ivar. | def $gvar. | def @@cvar. - next_args << :dot - when :on_kw - case t.tok - when 'self', 'true', 'false', 'nil' - # def self(arg) | def self. - next_args.push(:arg, :dot) - else - # def if(arg) - skip = true - next_args << :arg - end - when :on_op, :on_backtick - # def +(arg) - skip = true - next_args << :arg - when :on_ident, :on_const - # def a(arg) | def a. - next_args.push(:arg, :dot) - end - end - if args.include?(:dot) - # def receiver.name - next_args << :name if t.event == :on_period || (t.event == :on_op && t.tok == '::') - end - if args.include?(:name) - if %i[on_ident on_const on_op on_kw on_backtick].include?(t.event) - # def name(arg) | def receiver.name(arg) - next_args << :arg - skip = true - end - end - if args.include?(:arg) - case t.event - when :on_nl, :on_semicolon - # def receiver.f; - body = :normal - when :on_lparen - # def receiver.f() - next_args << :eq - else - if t.event == :on_op && t.tok == '=' - # def receiver.f = - body = :oneliner - else - # def receiver.f arg - next_args << :arg_without_paren - end - end - end - if args.include?(:eq) - if t.event == :on_op && t.tok == '=' - body = :oneliner - else - body = :normal - end - end - if args.include?(:arg_without_paren) - if %i[on_semicolon on_nl].include?(t.event) - # def f a; - body = :normal - else - # def f a, b - next_args << :arg_without_paren - end - end - if body == :oneliner - opens.pop - elsif body - opens[-1] = [last_tok, nil] - else - opens[-1] = [last_tok, :in_method_head, next_args] - end - end - when :in_for_while_until_condition - if t.event == :on_semicolon || t.event == :on_nl || (t.event == :on_kw && t.tok == 'do') - skip = true if t.event == :on_kw && t.tok == 'do' - opens[-1] = [last_tok, nil] - end - end - - unless skip - case t.event - when :on_kw - case t.tok - when 'begin', 'class', 'module', 'do', 'case' - opens << [t, nil] - when 'end' - opens.pop - when 'def' - opens << [t, :in_method_head, [:receiver, :name]] - when 'if', 'unless' - unless t.state.allbits?(Ripper::EXPR_LABEL) - opens << [t, nil] - end - when 'while', 'until' - unless t.state.allbits?(Ripper::EXPR_LABEL) - opens << [t, :in_for_while_until_condition] - end - when 'ensure', 'rescue' - unless t.state.allbits?(Ripper::EXPR_LABEL) - opens.pop - opens << [t, nil] - end - when 'alias' - opens << [t, :in_alias_undef, 2] - when 'undef' - opens << [t, :in_alias_undef, 1] - when 'elsif', 'else', 'when' - opens.pop - opens << [t, nil] - when 'for' - opens << [t, :in_for_while_until_condition] - when 'in' - if last_tok&.event == :on_kw && %w[case in].include?(last_tok.tok) && first_token_on_line - opens.pop - opens << [t, nil] - end - end - when :on_tlambda - opens << [t, :in_lambda_head] - when :on_lparen, :on_lbracket, :on_lbrace, :on_tlambeg, :on_embexpr_beg, :on_embdoc_beg - opens << [t, nil] - when :on_rparen, :on_rbracket, :on_rbrace, :on_embexpr_end, :on_embdoc_end - opens.pop - when :on_heredoc_beg - pending_heredocs << t - when :on_heredoc_end - opens.pop - when :on_backtick - opens << [t, nil] unless t.state == Ripper::EXPR_ARG - when :on_tstring_beg, :on_words_beg, :on_qwords_beg, :on_symbols_beg, :on_qsymbols_beg, :on_regexp_beg - opens << [t, nil] - when :on_tstring_end, :on_regexp_end, :on_label_end - opens.pop - when :on_symbeg - if t.tok == ':' - opens << [t, :in_unquoted_symbol] - else - opens << [t, nil] - end - end - end - if t.event == :on_nl || t.event == :on_semicolon - first_token_on_line = true - elsif t.event != :on_sp - first_token_on_line = false - end - if pending_heredocs.any? && t.tok.include?("\n") - pending_heredocs.reverse_each { |t| opens << [t, nil] } - pending_heredocs = [] - end - if opens.last && opens.last[1] == :in_alias_undef && !IGNORE_TOKENS.include?(t.event) && t.event != :on_heredoc_end - tok, state, arg = opens.pop - opens << [tok, state, arg - 1] if arg >= 1 - end - yield t, opens if block_given? - end - opens.map(&:first) + pending_heredocs.reverse - end - - def open_tokens(tokens) - # scan_opens without block will return a list of open tokens at last token position - scan_opens(tokens) - end - - # Calculates token information [line_tokens, prev_opens, next_opens, min_depth] for each line. - # Example code - # ["hello - # world"+( - # First line - # line_tokens: [[lbracket, '['], [tstring_beg, '"'], [tstring_content("hello\nworld"), "hello\n"]] - # prev_opens: [] - # next_tokens: [lbracket, tstring_beg] - # min_depth: 0 (minimum at beginning of line) - # Second line - # line_tokens: [[tstring_content("hello\nworld"), "world"], [tstring_end, '"'], [op, '+'], [lparen, '(']] - # prev_opens: [lbracket, tstring_beg] - # next_tokens: [lbracket, lparen] - # min_depth: 1 (minimum just after tstring_end) - def parse_by_line(tokens) - line_tokens = [] - prev_opens = [] - min_depth = 0 - output = [] - last_opens = scan_opens(tokens) do |t, opens| - depth = t == opens.last&.first ? opens.size - 1 : opens.size - min_depth = depth if depth < min_depth - if t.tok.include?("\n") - t.tok.each_line do |line| - line_tokens << [t, line] - next if line[-1] != "\n" - next_opens = opens.map(&:first) - output << [line_tokens, prev_opens, next_opens, min_depth] - prev_opens = next_opens - min_depth = prev_opens.size - line_tokens = [] - end - else - line_tokens << [t, t.tok] - end - end - output << [line_tokens, prev_opens, last_opens, min_depth] if line_tokens.any? - output - end - end - end -end |