class SyntaxSuggest::DisplayCodeWithLineNumbers

输出带高亮行号的代码

传递给此类的内容将被渲染，即使它被“标记为不可见”。任何输出过滤都应在此类被调用之前完成。

DisplayCodeWithLineNumbers.new(
  lines: lines,
  highlight_lines: [lines[2], lines[3]]
).call
# =>
    1
    2  def cat
  > 3    Dir.chdir
  > 4    end
    5  end
    6

Constants

TERMINAL_END
TERMINAL_HIGHLIGHT

Public Class Methods

new (lines:, highlight_lines: [], terminal: false)

Source

# File lib/syntax_suggest/display_code_with_line_numbers.rb, line 25
def initialize(lines:, highlight_lines: [], terminal: false)
  @lines = Array(lines).sort
  @terminal = terminal
  @highlight_line_hash = Array(highlight_lines).each_with_object({}) { |line, h| h[line] = true }
  @digit_count = @lines.last&.line_number.to_s.length
end

Public Instance Methods

call ()

Source

# File lib/syntax_suggest/display_code_with_line_numbers.rb, line 32
def call
  @lines.map do |line|
    format_line(line)
  end.join
end

私有实例方法

format (contents:, number:, empty:, highlight: false)

Source

# File lib/syntax_suggest/display_code_with_line_numbers.rb, line 50
        def format(contents:, number:, empty:, highlight: false)
  string = +""
  string << if highlight
    "> "
  else
    "  "
  end

  string << number.rjust(@digit_count).to_s
  if empty
    string << contents
  else
    string << "  "
    string << TERMINAL_HIGHLIGHT if @terminal && highlight
    string << contents
    string << TERMINAL_END if @terminal
  end
  string
end

format_line (code_line)

Source

# File lib/syntax_suggest/display_code_with_line_numbers.rb, line 38
        def format_line(code_line)
  # Handle trailing slash lines
  code_line.original.lines.map.with_index do |contents, i|
    format(
      empty: code_line.empty?,
      number: (code_line.number + i).to_s,
      contents: contents,
      highlight: @highlight_line_hash[code_line]
    )
  end.join
end