Class: RDoc::RD::BlockParser

Inherits:
Racc::Parser
  • Object
show all
Defined in:
lib/rdoc/rd/block_parser.rb

Overview

RD format parser for headings, paragraphs, lists, verbatim sections that exist as blocks.

Constant Summary collapse

TMPFILE =

:stopdoc:

["rdtmp", $$, 0]
MARK_TO_LEVEL =
{
  '='    => 1,
  '=='   => 2,
  '==='  => 3,
  '====' => 4,
  '+'    => 5,
  '++'   => 6,
}
Racc_arg =
[
racc_action_table,
racc_action_check,
racc_action_default,
racc_action_pointer,
racc_goto_table,
racc_goto_check,
racc_goto_default,
racc_goto_pointer,
racc_nt_base,
racc_reduce_table,
racc_token_table,
racc_shift_n,
racc_reduce_n,
racc_use_result_var ]
Racc_token_to_s_table =
[
"$end",
"error",
"DUMMY",
"ITEMLISTLINE",
"ENUMLISTLINE",
"DESCLISTLINE",
"METHODLISTLINE",
"STRINGLINE",
"WHITELINE",
"SUBTREE",
"HEADLINE",
"INCLUDE",
"INDENT",
"DEDENT",
"$start",
"document",
"blocks",
"block",
"textblock",
"verbatim",
"lists",
"headline",
"include",
"textblockcontent",
"verbatimcontent",
"verbatim_after_lists",
"list",
"itemlist",
"enumlist",
"desclist",
"methodlist",
"lists2",
"itemlistitems",
"itemlistitem",
"first_textblock_in_itemlist",
"other_blocks_in_list",
"enumlistitems",
"enumlistitem",
"first_textblock_in_enumlist",
"desclistitems",
"desclistitem",
"description_part",
"methodlistitems",
"methodlistitem",
"whitelines",
"blocks_in_list",
"block_in_list",
"whitelines2" ]
Racc_debug_parser =
false

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initializeBlockParser

Creates a new RDoc::RD::BlockParser. Use #parse to parse an rd-format document.


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# File 'lib/rdoc/rd/block_parser.rb', line 52

def initialize
  @inline_parser = RDoc::RD::InlineParser.new self
  @include_path = []

  # for testing
  @footnotes = []
  @labels    = {}
end

Instance Attribute Details

#footnotesObject (readonly)

Footnotes for this document


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# File 'lib/rdoc/rd/block_parser.rb', line 36

def footnotes
  @footnotes
end

#include_pathObject

Path to find included files in


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# File 'lib/rdoc/rd/block_parser.rb', line 46

def include_path
  @include_path
end

#labelsObject (readonly)

Labels for items in this document


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# File 'lib/rdoc/rd/block_parser.rb', line 41

def labels
  @labels
end

Instance Method Details

#_reduce_1(val, _values, result) ⇒ Object

reduce 0 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 679

def _reduce_1(val, _values, result)
 result = RDoc::Markup::Document.new(*val[0])
    result
end

#_reduce_10(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 721

def _reduce_10(val, _values, result)
 result = [RDoc::Markup::BlankLine.new]
    result
end

#_reduce_11(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 726

def _reduce_11(val, _values, result)
 result = val[0].parts
    result
end

#_reduce_12(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 731

def _reduce_12(val, _values, result)
      # val[0] is like [level, title]
      title = @inline_parser.parse(val[0][1])
      result = RDoc::Markup::Heading.new(val[0][0], title)

    result
end

#_reduce_13(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 739

def _reduce_13(val, _values, result)
      result = RDoc::Markup::Include.new val[0], @include_path

    result
end

#_reduce_14(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 745

def _reduce_14(val, _values, result)
      # val[0] is Array of String
      result = paragraph val[0]

    result
end

#_reduce_15(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 752

def _reduce_15(val, _values, result)
 result << val[1].rstrip
    result
end

#_reduce_16(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 757

def _reduce_16(val, _values, result)
 result = [val[0].rstrip]
    result
end

#_reduce_17(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 762

def _reduce_17(val, _values, result)
      # val[1] is Array of String
      content = cut_off val[1]
      result = RDoc::Markup::Verbatim.new(*content)

      # imform to lexer.
      @in_verbatim = false

    result
end

#_reduce_18(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 773

def _reduce_18(val, _values, result)
      # val[0] is Array of String
      content = cut_off val[0]
      result = RDoc::Markup::Verbatim.new(*content)

      # imform to lexer.
      @in_verbatim = false

    result
end

#_reduce_19(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 784

def _reduce_19(val, _values, result)
      result << val[1]

    result
end

#_reduce_2(val, _values, result) ⇒ Object

Raises:

  • (ParseError)

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# File 'lib/rdoc/rd/block_parser.rb', line 684

def _reduce_2(val, _values, result)
 raise ParseError, "file empty"
    result
end

#_reduce_20(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 790

def _reduce_20(val, _values, result)
      result.concat val[2]

    result
end

#_reduce_21(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 796

def _reduce_21(val, _values, result)
      result << "\n"

    result
end

#_reduce_22(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 802

def _reduce_22(val, _values, result)
      result = val
      # inform to lexer.
      @in_verbatim = true

    result
end

#_reduce_27(val, _values, result) ⇒ Object

reduce 26 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 818

def _reduce_27(val, _values, result)
      result = val[0]

    result
end

#_reduce_28(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 824

def _reduce_28(val, _values, result)
      result = val[1]

    result
end

#_reduce_29(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 830

def _reduce_29(val, _values, result)
      result = val[1].push(val[2])

    result
end

#_reduce_3(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 689

def _reduce_3(val, _values, result)
 result = val[0].concat val[1]
    result
end

#_reduce_30(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 836

def _reduce_30(val, _values, result)
 result = val[0] << val[1]
    result
end

#_reduce_31(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 841

def _reduce_31(val, _values, result)
 result = [val[0]]
    result
end

#_reduce_32(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 846

def _reduce_32(val, _values, result)
      result = RDoc::Markup::List.new :BULLET, *val[0]

    result
end

#_reduce_33(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 852

def _reduce_33(val, _values, result)
 result.push(val[1])
    result
end

#_reduce_34(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 857

def _reduce_34(val, _values, result)
 result = val
    result
end

#_reduce_35(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 862

def _reduce_35(val, _values, result)
      result = RDoc::Markup::ListItem.new nil, val[0], *val[1]

    result
end

#_reduce_36(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 868

def _reduce_36(val, _values, result)
      result = RDoc::Markup::List.new :NUMBER, *val[0]

    result
end

#_reduce_37(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 874

def _reduce_37(val, _values, result)
 result.push(val[1])
    result
end

#_reduce_38(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 879

def _reduce_38(val, _values, result)
 result = val
    result
end

#_reduce_39(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 884

def _reduce_39(val, _values, result)
      result = RDoc::Markup::ListItem.new nil, val[0], *val[1]

    result
end

#_reduce_4(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 694

def _reduce_4(val, _values, result)
 result = val[0]
    result
end

#_reduce_40(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 890

def _reduce_40(val, _values, result)
      result = RDoc::Markup::List.new :NOTE, *val[0]

    result
end

#_reduce_41(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 896

def _reduce_41(val, _values, result)
 result.push(val[1])
    result
end

#_reduce_42(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 901

def _reduce_42(val, _values, result)
 result = val
    result
end

#_reduce_43(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 906

def _reduce_43(val, _values, result)
      term = @inline_parser.parse val[0].strip

      result = RDoc::Markup::ListItem.new term, *val[1]

    result
end

#_reduce_44(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 914

def _reduce_44(val, _values, result)
      result = RDoc::Markup::List.new :LABEL, *val[0]

    result
end

#_reduce_45(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 920

def _reduce_45(val, _values, result)
 result.push(val[1])
    result
end

#_reduce_46(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 925

def _reduce_46(val, _values, result)
 result = val
    result
end

#_reduce_47(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 930

def _reduce_47(val, _values, result)
      result = RDoc::Markup::ListItem.new "<tt>#{val[0].strip}</tt>", *val[1]

    result
end

#_reduce_48(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 936

def _reduce_48(val, _values, result)
      result = [val[1]].concat(val[2])

    result
end

#_reduce_49(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 942

def _reduce_49(val, _values, result)
      result = [val[1]]

    result
end

#_reduce_5(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 699

def _reduce_5(val, _values, result)
 result = val
    result
end

#_reduce_50(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 948

def _reduce_50(val, _values, result)
      result = val[2]

    result
end

#_reduce_51(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 954

def _reduce_51(val, _values, result)
      result = []

    result
end

#_reduce_52(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 960

def _reduce_52(val, _values, result)
 result.concat val[1]
    result
end

#_reduce_54(val, _values, result) ⇒ Object

reduce 53 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 967

def _reduce_54(val, _values, result)
 result = val
    result
end

#_reduce_55(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 972

def _reduce_55(val, _values, result)
 result = val
    result
end

#_reduce_57(val, _values, result) ⇒ Object

reduce 56 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 979

def _reduce_57(val, _values, result)
 result = []
    result
end

#_reduce_6(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 704

def _reduce_6(val, _values, result)
 result = val
    result
end

#_reduce_62(val, _values, result) ⇒ Object

reduce 61 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 992

def _reduce_62(val, _values, result)
      result = paragraph [val[0]].concat(val[1])

    result
end

#_reduce_63(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 998

def _reduce_63(val, _values, result)
      result = paragraph [val[0]]

    result
end

#_reduce_64(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1004

def _reduce_64(val, _values, result)
      result = paragraph [val[0]].concat(val[1])

    result
end

#_reduce_65(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1010

def _reduce_65(val, _values, result)
      result = paragraph [val[0]]

    result
end

#_reduce_66(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1016

def _reduce_66(val, _values, result)
      result = [val[0]].concat(val[1])

    result
end

#_reduce_67(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1022

def _reduce_67(val, _values, result)
 result.concat val[1]
    result
end

#_reduce_68(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1027

def _reduce_68(val, _values, result)
 result = val[1]
    result
end

#_reduce_69(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1032

def _reduce_69(val, _values, result)
 result = val
    result
end

#_reduce_71(val, _values, result) ⇒ Object

reduce 70 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 1039

def _reduce_71(val, _values, result)
 result = []
    result
end

#_reduce_72(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1044

def _reduce_72(val, _values, result)
 result = []
    result
end

#_reduce_8(val, _values, result) ⇒ Object

reduce 7 omitted


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# File 'lib/rdoc/rd/block_parser.rb', line 711

def _reduce_8(val, _values, result)
 result = val
    result
end

#_reduce_9(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 716

def _reduce_9(val, _values, result)
 result = val
    result
end

#_reduce_none(val, _values, result) ⇒ Object


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# File 'lib/rdoc/rd/block_parser.rb', line 1049

def _reduce_none(val, _values, result)
  val[0]
end

#add_footnote(content) ⇒ Object

Adds footnote content to the document


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# File 'lib/rdoc/rd/block_parser.rb', line 396

def add_footnote content
  index = @footnotes.length / 2 + 1

  footmark_link = "{^#{index}}[rdoc-label:footmark-#{index}:foottext-#{index}]"

  @footnotes << RDoc::Markup::Paragraph.new(footmark_link, ' ', *content)
  @footnotes << RDoc::Markup::BlankLine.new

  index
end

#add_label(label) ⇒ Object

Adds label label to the document


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# File 'lib/rdoc/rd/block_parser.rb', line 410

def add_label label
  @labels[label] = true

  label
end

#content(values) ⇒ Object

Retrieves the content of values as a single String


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# File 'lib/rdoc/rd/block_parser.rb', line 379

def content values
 values.map { |value| value.content }.join
end

#line_indexObject

Current line number


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# File 'lib/rdoc/rd/block_parser.rb', line 334

def line_index
  @i
end

#next_tokenObject

Returns the next token from the document


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# File 'lib/rdoc/rd/block_parser.rb', line 108

def next_token # :nodoc:
  # preprocessing
  # if it is not in RD part
  # => method
  while @in_part != "rd"
    line = @src[@i]
    @i += 1 # next line

    case line
    # src end
    when false
      return [false, false]
    # RD part begin
    when /^=begin\s*(?:\bRD\b.*)?\s*$/
      if @in_part # if in non-RD part
        @part_content.push(line)
      else
        @in_part = "rd"
        return [:WHITELINE, "=begin\n"] # <= for textblockand
      end
    # non-RD part begin
    when /^=begin\s+(\w+)/
      part = $1
      if @in_part # if in non-RD part
        @part_content.push(line)
      else
        @in_part = part if @tree.filter[part] # if filter exists
#  p "BEGIN_PART: #{@in_part}" # DEBUG
      end
    # non-RD part end
    when /^=end/
      if @in_part # if in non-RD part
#  p "END_PART: #{@in_part}" # DEBUG
        # make Part-in object
        part = RDoc::RD::Part.new(@part_content.join(""), @tree, "r")
        @part_content.clear
        # call filter, part_out is output(Part object)
        part_out = @tree.filter[@in_part].call(part)

        if @tree.filter[@in_part].mode == :rd # if output is RD formated
          subtree = parse_subtree(part_out.to_a)
        else # if output is target formated
          basename = TMPFILE.join('.')
          TMPFILE[-1] += 1
          tmpfile = open(@tree.tmp_dir + "/" + basename + ".#{@in_part}", "w")
          tmpfile.print(part_out)
          tmpfile.close
          subtree = parse_subtree(["=begin\n", "<<< #{basename}\n", "=end\n"])
        end
        @in_part = nil
        return [:SUBTREE, subtree]
      end
    else
      if @in_part # if in non-RD part
        @part_content.push(line)
      end
    end
  end

  @current_indent = @indent_stack.join("")
  line = @src[@i]
  case line
  when false
    if_current_indent_equal("") do
      [false, false]
    end
  when /^=end/
    if_current_indent_equal("") do
      @in_part = nil
      [:WHITELINE, "=end"] # MUST CHANGE??
    end
  when /^\s*$/
    @i += 1 # next line
    return [:WHITELINE, ':WHITELINE']
  when /^\#/  # comment line
    @i += 1 # next line
    self.next_token()
  when /^(={1,4})(?!=)\s*(?=\S)/, /^(\+{1,2})(?!\+)\s*(?=\S)/
    rest = $'                    # '
    rest.strip!
    mark = $1
    if_current_indent_equal("") do
      return [:HEADLINE, [MARK_TO_LEVEL[mark], rest]]
    end
  when /^<<<\s*(\S+)/
    file = $1
    if_current_indent_equal("") do
      suffix = file[-3 .. -1]
      if suffix == ".rd" or suffix == ".rb"
        subtree = parse_subtree(get_included(file))
        [:SUBTREE, subtree]
      else
        [:INCLUDE, file]
      end
    end
  when /^(\s*)\*(\s*)/
    rest = $'                   # '
    newIndent = $2
    if_current_indent_equal($1) do
      if @in_verbatim
        [:STRINGLINE, line]
      else
        @indent_stack.push("\s" << newIndent)
        [:ITEMLISTLINE, rest]
      end
    end
  when /^(\s*)(\(\d+\))(\s*)/
    rest = $'                     # '
    mark = $2
    newIndent = $3
    if_current_indent_equal($1) do
      if @in_verbatim
        [:STRINGLINE, line]
      else
        @indent_stack.push("\s" * mark.size << newIndent)
        [:ENUMLISTLINE, rest]
      end
    end
  when /^(\s*):(\s*)/
    rest = $'                    # '
    newIndent = $2
    if_current_indent_equal($1) do
      if @in_verbatim
        [:STRINGLINE, line]
      else
        @indent_stack.push("\s#{$2}")
        [:DESCLISTLINE, rest]
      end
    end
  when /^(\s*)---(?!-|\s*$)/
    indent = $1
    rest = $'
    /\s*/ === rest
    term = $'
    new_indent = $&
    if_current_indent_equal(indent) do
      if @in_verbatim
        [:STRINGLINE, line]
      else
        @indent_stack.push("\s\s\s" + new_indent)
        [:METHODLISTLINE, term]
      end
    end
  when /^(\s*)/
    if_current_indent_equal($1) do
      [:STRINGLINE, line]
    end
  else
    raise "[BUG] parsing error may occured."
  end
end

#on_error(et, ev, _values) ⇒ Object

Raises a ParseError when invalid formatting is found

Raises:

  • (ParseError)

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# File 'lib/rdoc/rd/block_parser.rb', line 318

def on_error(et, ev, _values)
  prv, cur, nxt = format_line_num(@i, @i+1, @i+2)

  raise ParseError, <<Msg

RD syntax error: line #{@i+1}:
  #{prv}  |#{@src[@i-1].chomp}
  #{cur}=>|#{@src[@i].chomp}
  #{nxt}  |#{@src[@i+1].chomp}

Msg
end

#paragraph(value) ⇒ Object

Creates a paragraph for value


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# File 'lib/rdoc/rd/block_parser.rb', line 386

def paragraph value
  content = cut_off(value).join(' ').rstrip
  contents = @inline_parser.parse content

  RDoc::Markup::Paragraph.new(*contents)
end

#parse(src) ⇒ Object

Parses src and returns an RDoc::Markup::Document.


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# File 'lib/rdoc/rd/block_parser.rb', line 64

def parse src
  @src = src
  @src.push false

  @footnotes = []
  @labels    = {}

  # @i: index(line no.) of src
  @i = 0

  # stack for current indentation
  @indent_stack = []

  # how indented.
  @current_indent = @indent_stack.join("")

  # RDoc::RD::BlockParser for tmp src
  @subparser = nil

  # which part is in now
  @in_part = nil
  @part_content = []

  @in_verbatim = false

  @yydebug = true

  document = do_parse

  unless @footnotes.empty? then
    blankline = document.parts.pop

    document.parts << RDoc::Markup::Rule.new(1)
    document.parts.concat @footnotes

    document.parts.push blankline
  end

  document
end