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?? block_expand.rb(4.88 KB)
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?? capture_code_context.rb(6.67 KB)
?? clean_document.rb(8.73 KB)
?? cli.rb(3.12 KB)
?? code_block.rb(2.13 KB)
?? code_frontier.rb(5.61 KB)
?? code_line.rb(6.58 KB)
?? code_search.rb(3.81 KB)
?? core_ext.rb(2.65 KB)
?? display_code_with_line_numbers.rb(1.77 KB)
?? display_invalid_blocks.rb(1.75 KB)
?? explain_syntax.rb(2.69 KB)
?? left_right_lex_count.rb(4.06 KB)
?? lex_all.rb(1.66 KB)
?? lex_value.rb(1.5 KB)
?? mini_stringio.rb(774 B)
?? parse_blocks_from_indent_line.rb(1.5 KB)
?? pathname_from_message.rb(1.42 KB)
?? priority_engulf_queue.rb(1.26 KB)
?? priority_queue.rb(2 KB)
?? ripper_errors.rb(960 B)
?? scan_history.rb(2.92 KB)
?? unvisited_lines.rb(705 B)
?? version.rb(76 B)

Editing: code_search.rb

# frozen_string_literal: true

module SyntaxSuggest
  # Searches code for a syntax error
  #
  # There are three main phases in the algorithm:
  #
  # 1. Sanitize/format input source
  # 2. Search for invalid blocks
  # 3. Format invalid blocks into something meaninful
  #
  # This class handles the part.
  #
  # The bulk of the heavy lifting is done in:
  #
  #  - CodeFrontier (Holds information for generating blocks and determining if we can stop searching)
  #  - ParseBlocksFromLine (Creates blocks into the frontier)
  #  - BlockExpand (Expands existing blocks to search more code)
  #
  # ## Syntax error detection
  #
  # When the frontier holds the syntax error, we can stop searching
  #
  #   search = CodeSearch.new(<<~EOM)
  #     def dog
  #       def lol
  #     end
  #   EOM
  #
  #   search.call
  #
  #   search.invalid_blocks.map(&:to_s) # =>
  #   # => ["def lol\n"]
  #
  class CodeSearch
    private

attr_reader :frontier

public

attr_reader :invalid_blocks, :record_dir, :code_lines

def initialize(source, record_dir: DEFAULT_VALUE)
      record_dir = if record_dir == DEFAULT_VALUE
        (ENV["SYNTAX_SUGGEST_RECORD_DIR"] || ENV["SYNTAX_SUGGEST_DEBUG"]) ? "tmp" : nil
      else
        record_dir
      end

if record_dir
        @record_dir = SyntaxSuggest.record_dir(record_dir)
        @write_count = 0
      end

@tick = 0
      @source = source
      @name_tick = Hash.new { |hash, k| hash[k] = 0 }
      @invalid_blocks = []

@code_lines = CleanDocument.new(source: source).call.lines

@frontier = CodeFrontier.new(code_lines: @code_lines)
      @block_expand = BlockExpand.new(code_lines: @code_lines)
      @parse_blocks_from_indent_line = ParseBlocksFromIndentLine.new(code_lines: @code_lines)
    end

# Used for debugging
    def record(block:, name: "record")
      return unless @record_dir
      @name_tick[name] += 1
      filename = "#{@write_count += 1}-#{name}-#{@name_tick[name]}-(#{block.starts_at}__#{block.ends_at}).txt"
      if ENV["SYNTAX_SUGGEST_DEBUG"]
        puts "\n\n==== #{filename} ===="
        puts "\n```#{block.starts_at}..#{block.ends_at}"
        puts block
        puts "```"
        puts "  block indent:      #{block.current_indent}"
      end
      @record_dir.join(filename).open(mode: "a") do |f|
        document = DisplayCodeWithLineNumbers.new(
          lines: @code_lines.select(&:visible?),
          terminal: false,
          highlight_lines: block.lines
        ).call

f.write("    Block lines: #{block.starts_at..block.ends_at} (#{name}) \n\n#{document}")
      end
    end

def push(block, name:)
      record(block: block, name: name)

block.mark_invisible if block.valid?
      frontier << block
    end

# Parses the most indented lines into blocks that are marked
    # and added to the frontier
    def create_blocks_from_untracked_lines
      max_indent = frontier.next_indent_line&.indent

while (line = frontier.next_indent_line) && (line.indent == max_indent)
        @parse_blocks_from_indent_line.each_neighbor_block(frontier.next_indent_line) do |block|
          push(block, name: "add")
        end
      end
    end

# Given an already existing block in the frontier, expand it to see
    # if it contains our invalid syntax
    def expand_existing
      block = frontier.pop
      return unless block

record(block: block, name: "before-expand")

block = @block_expand.call(block)
      push(block, name: "expand")
    end

# Main search loop
    def call
      until frontier.holds_all_syntax_errors?
        @tick += 1

if frontier.expand?
          expand_existing
        else
          create_blocks_from_untracked_lines
        end
      end

@invalid_blocks.concat(frontier.detect_invalid_blocks)
      @invalid_blocks.sort_by! { |block| block.starts_at }
      self
    end
  end
end

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Editing: code_search.rb

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