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# frozen_string_literal: true
module SyntaxSuggest
# Tracks which lines various code blocks have expanded to
# and which are still unexplored
class UnvisitedLines
def initialize(code_lines:)
@unvisited = code_lines.sort_by(&:indent_index)
@visited_lines = {}
@visited_lines.compare_by_identity
end
def empty?
@unvisited.empty?
end
def peek
@unvisited.last
end
def pop
@unvisited.pop
end
def visit_block(block)
block.lines.each do |line|
next if @visited_lines[line]
@visited_lines[line] = true
end
while @visited_lines[@unvisited.last]
@unvisited.pop
end
end
end
end
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