Module: RText::Frontend::Context
- Defined in:
- lib/rtext/frontend/context.rb
Class Method Summary collapse
-
.extract(lines) ⇒ Object
lines; all lines from the beginning up to and including the current line.
Class Method Details
.extract(lines) ⇒ Object
lines; all lines from the beginning up to and including the current line
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# File 'lib/rtext/frontend/context.rb', line 7 def self.extract(lines) non_ignored_lines = 0 array_nesting = 0 block_nesting = 0 last_element_line = 0 result = [] lines.reverse.each_with_index do |l, i| if i == 0 result.unshift(l) else l = l.strip if l.size == 0 || l[0..0] == "#" # ignore empty lines and comments else non_ignored_lines += 1 case l[-1..-1] when "{" if block_nesting > 0 block_nesting -= 1 elsif block_nesting == 0 result.unshift(l) last_element_line = non_ignored_lines end when "}" block_nesting += 1 when "[" if array_nesting > 0 array_nesting -= 1 elsif array_nesting == 0 result.unshift(l) end when "]" array_nesting += 1 when ":" # lable directly above element if non_ignored_lines == last_element_line + 1 result.unshift(l) end end end end end result end |