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Only iterate Lexer heredoc arrays

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The last element in the `@buf` may be either an array or an `Elem`. In the case it is an `Elem` we iterate over every element, when we do not need to. This check guards that case by ensuring that we only iterate over an array of elements.
This commit is contained in:
schneems 2021-11-07 20:30:50 -06:00 • committed by Yusuke Endoh
parent 3f74eaa7a8
commit 3685b5af95
Notes: git 2021-12-02 15:56:03 +09:00
1 changed files with 12 additions and 10 deletions
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22
ext/ripper/lib/ripper/lexer.rb
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@ -166,17 +166,19 @@ class Ripper
def on_heredoc_dedent(v, w)
ignored_sp = []
heredoc = @buf.last
heredoc.each_with_index do |e, i|
if Elem === e and e.event == :on_tstring_content and e.pos[1].zero?
tok = e.tok.dup if w > 0 and /\A\s/ =~ e.tok
if (n = dedent_string(e.tok, w)) > 0
if e.tok.empty?
e.tok = tok[0, n]
e.event = :on_ignored_sp
next
if Array === heredoc
heredoc.each_with_index do |e, i|
if Elem === e and e.event == :on_tstring_content and e.pos[1].zero?
tok = e.tok.dup if w > 0 and /\A\s/ =~ e.tok
if (n = dedent_string(e.tok, w)) > 0
if e.tok.empty?
e.tok = tok[0, n]
e.event = :on_ignored_sp
next
end
ignored_sp << [i, Elem.new(e.pos.dup, :on_ignored_sp, tok[0, n], e.state)]
e.pos[1] += n
end
ignored_sp << [i, Elem.new(e.pos.dup, :on_ignored_sp, tok[0, n], e.state)]
e.pos[1] += n
end
end
end