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+##
+# RDoc::Markup parses plain text documents and attempts to decompose them into
+# their constituent parts. Some of these parts are high-level: paragraphs,
+# chunks of verbatim text, list entries and the like. Other parts happen at
+# the character level: a piece of bold text, a word in code font. This markup
+# is similar in spirit to that used on WikiWiki webs, where folks create web
+# pages using a simple set of formatting rules.
+#
+# RDoc::Markup and other markup formats do no output formatting, this is
+# handled by the RDoc::Markup::Formatter subclasses.
+#
+# = Supported Formats
+#
+# Besides the RDoc::Markup format, the following formats are built in to RDoc:
+#
+# markdown::
+# The markdown format as described by
+# http://daringfireball.net/projects/markdown/. See RDoc::Markdown for
+# details on the parser and supported extensions.
+# rd::
+# The rdtool format. See RDoc::RD for details on the parser and format.
+# tomdoc::
+# The TomDoc format as described by http://tomdoc.org/. See RDoc::TomDoc
+# for details on the parser and supported extensions.
+#
+# You can choose a markup format using the following methods:
+#
+# per project::
+# If you build your documentation with rake use RDoc::Task#markup.
+#
+# If you build your documentation by hand run:
+#
+# rdoc --markup your_favorite_format --write-options
+#
+# and commit <tt>.rdoc_options</tt> and ship it with your packaged gem.
+# per file::
+# At the top of the file use the <tt>:markup:</tt> directive to set the
+# default format for the rest of the file.
+# per comment::
+# Use the <tt>:markup:</tt> directive at the top of a comment you want
+# to write in a different format.
+#
+# = RDoc::Markup
+#
+# RDoc::Markup is extensible at runtime: you can add \new markup elements to
+# be recognized in the documents that RDoc::Markup parses.
+#
+# RDoc::Markup is intended to be the basis for a family of tools which share
+# the common requirement that simple, plain-text should be rendered in a
+# variety of different output formats and media. It is envisaged that
+# RDoc::Markup could be the basis for formatting RDoc style comment blocks,
+# Wiki entries, and online FAQs.
+#
+# == Synopsis
+#
+# This code converts +input_string+ to HTML. The conversion takes place in
+# the +convert+ method, so you can use the same RDoc::Markup converter to
+# convert multiple input strings.
+#
+# require 'rdoc'
+#
+# h = RDoc::Markup::ToHtml.new(RDoc::Options.new)
+#
+# puts h.convert(input_string)
+#
+# You can extend the RDoc::Markup parser to recognize new markup
+# sequences, and to add special processing for text that matches a
+# regular expression. Here we make WikiWords significant to the parser,
+# and also make the sequences {word} and \<no>text...</no> signify
+# strike-through text. We then subclass the HTML output class to deal
+# with these:
+#
+# require 'rdoc'
+#
+# class WikiHtml < RDoc::Markup::ToHtml
+# def handle_special_WIKIWORD(special)
+# "<font color=red>" + special.text + "</font>"
+# end
+# end
+#
+# markup = RDoc::Markup.new
+# markup.add_word_pair("{", "}", :STRIKE)
+# markup.add_html("no", :STRIKE)
+#
+# markup.add_special(/\b([A-Z][a-z]+[A-Z]\w+)/, :WIKIWORD)
+#
+# wh = WikiHtml.new RDoc::Options.new, markup
+# wh.add_tag(:STRIKE, "<strike>", "</strike>")
+#
+# puts "<body>#{wh.convert ARGF.read}</body>"
+#
+# == Encoding
+#
+# Where Encoding support is available, RDoc will automatically convert all
+# documents to the same output encoding. The output encoding can be set via
+# RDoc::Options#encoding and defaults to Encoding.default_external.
+#
+# = \RDoc Markup Reference
+#
+# == Block Markup
+#
+# === Paragraphs and Verbatim
+#
+# The markup engine looks for a document's natural left margin. This is
+# used as the initial margin for the document.
+#
+# Consecutive lines starting at this margin are considered to be a
+# paragraph. Empty lines separate paragraphs.
+#
+# Any line that starts to the right of the current margin is treated
+# as verbatim text. This is useful for code listings:
+#
+# 3.times { puts "Ruby" }
+#
+# In verbatim text, two or more blank lines are collapsed into one,
+# and trailing blank lines are removed:
+#
+# This is the first line
+#
+#
+# This is the second non-blank line,
+# after 2 blank lines in the source markup.
+#
+#
+# There were two trailing blank lines right above this paragraph, that
+# have been removed. In addition, the verbatim text has been shifted
+# left, so the amount of indentation of verbatim text is unimportant.
+#
+# For HTML output RDoc makes a small effort to determine if a verbatim section
+# contains Ruby source code. If so, the verbatim block will be marked up as
+# HTML. Triggers include "def", "class", "module", "require", the "hash
+# rocket"# (=>) or a block call with a parameter.
+#
+# === Headers
+#
+# A line starting with an equal sign (=) is treated as a
+# heading. Level one headings have one equals sign, level two headings
+# have two, and so on until level six, which is the maximum
+# (seven hyphens or more result in a level six heading).
+#
+# For example, the above header was obtained with:
+#
+# === Headers
+#
+# In HTML output headers have an id matching their name. The above example's
+# HTML is:
+#
+# <h3 id="label-Headers">Headers</h3>
+#
+# If a heading is inside a method body the id will be prefixed with the
+# method's id. If the above header where in the documentation for a method
+# such as:
+#
+# ##
+# # This method does fun things
+# #
+# # = Example
+# #
+# # Example of fun things goes here ...
+#
+# def do_fun_things
+# end
+#
+# The header's id would be:
+#
+# <h1 id="method-i-do_fun_things-label-Example">Example</h1>
+#
+# The label can be linked-to using <tt>SomeClass@Headers</tt>. See
+# {Links}[RDoc::Markup@Links] for further details.
+#
+# === Rules
+#
+# A line starting with three or more hyphens (at the current indent)
+# generates a horizontal rule.
+#
+# ---
+#
+# produces:
+#
+# ---
+#
+# === Simple Lists
+#
+# If a paragraph starts with a "*", "-", "<digit>." or "<letter>.",
+# then it is taken to be the start of a list. The margin is increased to be
+# the first non-space following the list start flag. Subsequent lines
+# should be indented to this new margin until the list ends. For example:
+#
+# * this is a list with three paragraphs in
+# the first item. This is the first paragraph.
+#
+# And this is the second paragraph.
+#
+# 1. This is an indented, numbered list.
+# 2. This is the second item in that list
+#
+# This is the third conventional paragraph in the
+# first list item.
+#
+# * This is the second item in the original list
+#
+# produces:
+#
+# * this is a list with three paragraphs in
+# the first item. This is the first paragraph.
+#
+# And this is the second paragraph.
+#
+# 1. This is an indented, numbered list.
+# 2. This is the second item in that list
+#
+# This is the third conventional paragraph in the
+# first list item.
+#
+# * This is the second item in the original list
+#
+# === Labeled Lists
+#
+# You can also construct labeled lists, sometimes called description
+# or definition lists. Do this by putting the label in square brackets
+# and indenting the list body:
+#
+# [cat] a small furry mammal
+# that seems to sleep a lot
+#
+# [ant] a little insect that is known
+# to enjoy picnics
+#
+# produces:
+#
+# [cat] a small furry mammal
+# that seems to sleep a lot
+#
+# [ant] a little insect that is known
+# to enjoy picnics
+#
+# If you want the list bodies to line up to the left of the labels,
+# use two colons:
+#
+# cat:: a small furry mammal
+# that seems to sleep a lot
+#
+# ant:: a little insect that is known
+# to enjoy picnics
+#
+# produces:
+#
+# cat:: a small furry mammal
+# that seems to sleep a lot
+#
+# ant:: a little insect that is known
+# to enjoy picnics
+#
+# Notice that blank lines right after the label are ignored in labeled lists:
+#
+# [one]
+#
+# definition 1
+#
+# [two]
+#
+# definition 2
+#
+# produces the same output as
+#
+# [one] definition 1
+# [two] definition 2
+#
+#
+# === Lists and Verbatim
+#
+# If you want to introduce a verbatim section right after a list, it has to be
+# less indented than the list item bodies, but more indented than the list
+# label, letter, digit or bullet. For instance:
+#
+# * point 1
+#
+# * point 2, first paragraph
+#
+# point 2, second paragraph
+# verbatim text inside point 2
+# point 2, third paragraph
+# verbatim text outside of the list (the list is therefore closed)
+# regular paragraph after the list
+#
+# produces:
+#
+# * point 1
+#
+# * point 2, first paragraph
+#
+# point 2, second paragraph
+# verbatim text inside point 2
+# point 2, third paragraph
+# verbatim text outside of the list (the list is therefore closed)
+# regular paragraph after the list
+#
+# == Text Markup
+#
+# === Bold, Italic, Typewriter Text
+#
+# You can use markup within text (except verbatim) to change the
+# appearance of parts of that text. Out of the box, RDoc::Markup
+# supports word-based and general markup.
+#
+# Word-based markup uses flag characters around individual words:
+#
+# <tt>\*_word_\*</tt>:: displays _word_ in a *bold* font
+# <tt>\__word_\_</tt>:: displays _word_ in an _emphasized_ font
+# <tt>\+_word_\+</tt>:: displays _word_ in a +code+ font
+#
+# General markup affects text between a start delimiter and an end
+# delimiter. Not surprisingly, these delimiters look like HTML markup.
+#
+# <tt>\<b>_text_</b></tt>:: displays _text_ in a *bold* font
+# <tt>\<em>_text_</em></tt>:: displays _text_ in an _emphasized_ font
+# (alternate tag: <tt>\<i></tt>)
+# <tt>\<tt>_text_\</tt></tt>:: displays _text_ in a +code+ font
+# (alternate tag: <tt>\<code></tt>)
+#
+# Unlike conventional Wiki markup, general markup can cross line
+# boundaries. You can turn off the interpretation of markup by
+# preceding the first character with a backslash (see <i>Escaping
+# Text Markup</i>, below).
+#
+# === Links
+#
+# Links to starting with +http:+, +https:+, +mailto:+, +ftp:+ or +www.+
+# are recognized. An HTTP url that references an external image is converted
+# into an inline image element.
+#
+# Classes and methods will be automatically linked to their definition. For
+# example, <tt>RDoc::Markup</tt> will link to this documentation. By default
+# methods will only be automatically linked if they contain an <tt>_</tt> (all
+# methods can be automatically linked through the <tt>--hyperlink-all</tt>
+# command line option).
+#
+# Single-word methods can be linked by using the <tt>#</tt> character for
+# instance methods or <tt>::</tt> for class methods. For example,
+# <tt>#convert</tt> links to #convert. A class or method may be combined like
+# <tt>RDoc::Markup#convert</tt>.
+#
+# A heading inside the documentation can be linked by following the class
+# or method by an <tt>@</tt> then the heading name.
+# <tt>RDoc::Markup@Links</tt> will link to this section like this:
+# RDoc::Markup@Links. Spaces in headings with multiple words must be escaped
+# with <tt>+</tt> like <tt>RDoc::Markup@Escaping+Text+Markup</tt>.
+# Punctuation and other special characters must be escaped like CGI.escape.
+#
+# The <tt>@</tt> can also be used to link to sections. If a section and a
+# heading share the same name the section is preferred for the link.
+#
+# Links can also be of the form <tt>label[url]</tt>, in which case +label+ is
+# used in the displayed text, and +url+ is used as the target. If +label+
+# contains multiple words, put it in braces: <tt>{multi word label}[url]</tt>.
+# The +url+ may be an +http:+-type link or a cross-reference to a class,
+# module or method with a label.
+#
+# Links with the <code>rdoc-image:</code> scheme will create an image tag for
+# HTML output. Only fully-qualified URLs are supported.
+#
+# Links with the <tt>rdoc-ref:</tt> scheme will link to the referenced class,
+# module, method, file, etc. If the referenced item is does not exist
+# no link will be generated and <tt>rdoc-ref:</tt> will be removed from the
+# resulting text.
+#
+# Links starting with <tt>rdoc-label:label_name</tt> will link to the
+# +label_name+. You can create a label for the current link (for
+# bidirectional links) by supplying a name for the current link like
+# <tt>rdoc-label:label-other:label-mine</tt>.
+#
+# Links starting with +link:+ refer to local files whose path is relative to
+# the <tt>--op</tt> directory. Use <tt>rdoc-ref:</tt> instead of
+# <tt>link:</tt> to link to files generated by RDoc as the link target may
+# be different across RDoc generators.
+#
+# Example links:
+#
+# https://github.com/rdoc/rdoc
+# mailto:user@example.com
+# {RDoc Documentation}[http://rdoc.rubyforge.org]
+# {RDoc Markup}[rdoc-ref:RDoc::Markup]
+#
+# === Escaping Text Markup
+#
+# Text markup can be escaped with a backslash, as in \<tt>, which was obtained
+# with <tt>\\<tt></tt>. Except in verbatim sections and between \<tt> tags,
+# to produce a backslash you have to double it unless it is followed by a
+# space, tab or newline. Otherwise, the HTML formatter will discard it, as it
+# is used to escape potential links:
+#
+# * The \ must be doubled if not followed by white space: \\.
+# * But not in \<tt> tags: in a Regexp, <tt>\S</tt> matches non-space.
+# * This is a link to {ruby-lang}[www.ruby-lang.org].
+# * This is not a link, however: \{ruby-lang.org}[www.ruby-lang.org].
+# * This will not be linked to \RDoc::RDoc#document
+#
+# generates:
+#
+# * The \ must be doubled if not followed by white space: \\.
+# * But not in \<tt> tags: in a Regexp, <tt>\S</tt> matches non-space.
+# * This is a link to {ruby-lang}[www.ruby-lang.org]
+# * This is not a link, however: \{ruby-lang.org}[www.ruby-lang.org]
+# * This will not be linked to \RDoc::RDoc#document
+#
+# Inside \<tt> tags, more precisely, leading backslashes are removed only if
+# followed by a markup character (<tt><*_+</tt>), a backslash, or a known link
+# reference (a known class or method). So in the example above, the backslash
+# of <tt>\S</tt> would be removed if there was a class or module named +S+ in
+# the current context.
+#
+# This behavior is inherited from RDoc version 1, and has been kept for
+# compatibility with existing RDoc documentation.
+#
+# === Conversion of characters
+#
+# HTML will convert two/three dashes to an em-dash. Other common characters are
+# converted as well:
+#
+# em-dash:: -- or ---
+# ellipsis:: ...
+#
+# single quotes:: 'text' or `text'
+# double quotes:: "text" or ``text''
+#
+# copyright:: (c)
+# registered trademark:: (r)
+#
+# produces:
+#
+# em-dash:: -- or ---
+# ellipsis:: ...
+#
+# single quotes:: 'text' or `text'
+# double quotes:: "text" or ``text''
+#
+# copyright:: (c)
+# registered trademark:: (r)
+#
+#
+# == Documenting Source Code
+#
+# Comment blocks can be written fairly naturally, either using <tt>#</tt> on
+# successive lines of the comment, or by including the comment in
+# a <tt>=begin</tt>/<tt>=end</tt> block. If you use the latter form,
+# the <tt>=begin</tt> line _must_ be flagged with an +rdoc+ tag:
+#
+# =begin rdoc
+# Documentation to be processed by RDoc.
+#
+# ...
+# =end
+#
+# RDoc stops processing comments if it finds a comment line starting
+# with <tt>--</tt> right after the <tt>#</tt> character (otherwise,
+# it will be treated as a rule if it has three dashes or more).
+# This can be used to separate external from internal comments,
+# or to stop a comment being associated with a method, class, or module.
+# Commenting can be turned back on with a line that starts with <tt>++</tt>.
+#
+# ##
+# # Extract the age and calculate the date-of-birth.
+# #--
+# # FIXME: fails if the birthday falls on February 29th
+# #++
+# # The DOB is returned as a Time object.
+#
+# def get_dob(person)
+# # ...
+# end
+#
+# Names of classes, files, and any method names containing an underscore or
+# preceded by a hash character are automatically linked from comment text to
+# their description. This linking works inside the current class or module,
+# and with ancestor methods (in included modules or in the superclass).
+#
+# Method parameter lists are extracted and displayed with the method
+# description. If a method calls +yield+, then the parameters passed to yield
+# will also be displayed:
+#
+# def fred
+# ...
+# yield line, address
+#
+# This will get documented as:
+#
+# fred() { |line, address| ... }
+#
+# You can override this using a comment containing ':yields: ...' immediately
+# after the method definition
+#
+# def fred # :yields: index, position
+# # ...
+#
+# yield line, address
+#
+# which will get documented as
+#
+# fred() { |index, position| ... }
+#
+# +:yields:+ is an example of a documentation directive. These appear
+# immediately after the start of the document element they are modifying.
+#
+# RDoc automatically cross-references words with underscores or camel-case.
+# To suppress cross-references, prefix the word with a \ character. To
+# include special characters like "<tt>\n</tt>", you'll need to use
+# two \ characters in normal text, but only one in \<tt> text:
+#
+# "\\n" or "<tt>\n</tt>"
+#
+# produces:
+#
+# "\\n" or "<tt>\n</tt>"
+#
+# == Directives
+#
+# Directives are keywords surrounded by ":" characters.
+#
+# === Controlling what is documented
+#
+# [+:nodoc:+ / <tt>:nodoc: all</tt>]
+# This directive prevents documentation for the element from
+# being generated. For classes and modules, methods, aliases,
+# constants, and attributes directly within the affected class or
+# module also will be omitted. By default, though, modules and
+# classes within that class or module _will_ be documented. This is
+# turned off by adding the +all+ modifier.
+#
+# module MyModule # :nodoc:
+# class Input
+# end
+# end
+#
+# module OtherModule # :nodoc: all
+# class Output
+# end
+# end
+#
+# In the above code, only class <tt>MyModule::Input</tt> will be documented.
+#
+# The +:nodoc:+ directive, like +:enddoc:+, +:stopdoc:+ and +:startdoc:+
+# presented below, is local to the current file: if you do not want to
+# document a module that appears in several files, specify +:nodoc:+ on each
+# appearance, at least once per file.
+#
+# [+:stopdoc:+ / +:startdoc:+]
+# Stop and start adding new documentation elements to the current container.
+# For example, if a class has a number of constants that you don't want to
+# document, put a +:stopdoc:+ before the first, and a +:startdoc:+ after the
+# last. If you don't specify a +:startdoc:+ by the end of the container,
+# disables documentation for the rest of the current file.
+#
+# [+:doc:+]
+# Forces a method or attribute to be documented even if it wouldn't be
+# otherwise. Useful if, for example, you want to include documentation of a
+# particular private method.
+#
+# [+:enddoc:+]
+# Document nothing further at the current level: directives +:startdoc:+ and
+# +:doc:+ that appear after this will not be honored for the current container
+# (file, class or module), in the current file.
+#
+# [+:notnew:+ / +:not_new:+ / +:not-new:+ ]
+# Only applicable to the +initialize+ instance method. Normally RDoc
+# assumes that the documentation and parameters for +initialize+ are
+# actually for the +new+ method, and so fakes out a +new+ for the class.
+# The +:notnew:+ directive stops this. Remember that +initialize+ is private,
+# so you won't see the documentation unless you use the +-a+ command line
+# option.
+#
+# === Method arguments
+#
+# [+:arg:+ or +:args:+ _parameters_]
+# Overrides the default argument handling with exactly these parameters.
+#
+# ##
+# # :args: a, b
+#
+# def some_method(*a)
+# end
+#
+# [+:yield:+ or +:yields:+ _parameters_]
+# Overrides the default yield discovery with these parameters.
+#
+# ##
+# # :yields: key, value
+#
+# def each_thing &block
+# @things.each(&block)
+# end
+#
+# [+:call-seq:+]
+# Lines up to the next blank line or lines with a common prefix in the
+# comment are treated as the method's calling sequence, overriding the
+# default parsing of method parameters and yield arguments.
+#
+# Multiple lines may be used.
+#
+# # :call-seq:
+# # ARGF.readlines(sep=$/) -> array
+# # ARGF.readlines(limit) -> array
+# # ARGF.readlines(sep, limit) -> array
+# #
+# # ARGF.to_a(sep=$/) -> array
+# # ARGF.to_a(limit) -> array
+# # ARGF.to_a(sep, limit) -> array
+# #
+# # The remaining lines are documentation ...
+#
+# === Sections
+#
+# Sections allow you to group methods in a class into sensible containers. If
+# you use the sections 'Public', 'Internal' and 'Deprecated' (the three
+# allowed method statuses from TomDoc) the sections will be displayed in that
+# order placing the most useful methods at the top. Otherwise, sections will
+# be displayed in alphabetical order.
+#
+# [+:category:+ _section_]
+# Adds this item to the named +section+ overriding the current section. Use
+# this to group methods by section in RDoc output while maintaining a
+# sensible ordering (like alphabetical).
+#
+# # :category: Utility Methods
+# #
+# # CGI escapes +text+
+#
+# def convert_string text
+# CGI.escapeHTML text
+# end
+#
+# An empty category will place the item in the default category:
+#
+# # :category:
+# #
+# # This method is in the default category
+#
+# def some_method
+# # ...
+# end
+#
+# Unlike the :section: directive, :category: is not sticky. The category
+# only applies to the item immediately following the comment.
+#
+# Use the :section: directive to provide introductory text for a section of
+# documentation.
+#
+# [+:section:+ _title_]
+# Provides section introductory text in RDoc output. The title following
+# +:section:+ is used as the section name and the remainder of the comment
+# containing the section is used as introductory text. A section's comment
+# block must be separated from following comment blocks. Use an empty title
+# to switch to the default section.
+#
+# The :section: directive is sticky, so subsequent methods, aliases,
+# attributes, and classes will be contained in this section until the
+# section is changed. The :category: directive will override the :section:
+# directive.
+#
+# A :section: comment block may have one or more lines before the :section:
+# directive. These will be removed, and any identical lines at the end of
+# the block are also removed. This allows you to add visual cues to the
+# section.
+#
+# Example:
+#
+# # ----------------------------------------
+# # :section: My Section
+# # This is the section that I wrote.
+# # See it glisten in the noon-day sun.
+# # ----------------------------------------
+#
+# ##
+# # Comment for some_method
+#
+# def some_method
+# # ...
+# end
+#
+# === Other directives
+#
+# [+:markup:+ _type_]
+# Overrides the default markup type for this comment with the specified
+# markup type. For Ruby files, if the first comment contains this directive
+# it is applied automatically to all comments in the file.
+#
+# Unless you are converting between markup formats you should use a
+# <code>.rdoc_options</code> file to specify the default documentation
+# format for your entire project. See RDoc::Options@Saved+Options for
+# instructions.
+#
+# At the top of a file the +:markup:+ directive applies to the entire file:
+#
+# # coding: UTF-8
+# # :markup: TomDoc
+#
+# # TomDoc comment here ...
+#
+# class MyClass
+# # ...
+#
+# For just one comment:
+#
+# # ...
+# end
+#
+# # :markup: RDoc
+# #
+# # This is a comment in RDoc markup format ...
+#
+# def some_method
+# # ...
+#
+# See Markup@CONTRIBUTING for instructions on adding a new markup format.
+#
+# [+:include:+ _filename_]
+# Include the contents of the named file at this point. This directive
+# must appear alone on one line, possibly preceded by spaces. In this
+# position, it can be escaped with a \ in front of the first colon.
+#
+# The file will be searched for in the directories listed by the +--include+
+# option, or in the current directory by default. The contents of the file
+# will be shifted to have the same indentation as the ':' at the start of
+# the +:include:+ directive.
+#
+# [+:title:+ _text_]
+# Sets the title for the document. Equivalent to the <tt>--title</tt>
+# command line parameter. (The command line parameter overrides any :title:
+# directive in the source).
+#
+# [+:main:+ _name_]
+# Equivalent to the <tt>--main</tt> command line parameter.
+#
+#--
+# Original Author:: Dave Thomas, dave@pragmaticprogrammer.com
+# License:: Ruby license
+
+class RDoc::Markup
+
+ ##
+ # An AttributeManager which handles inline markup.
+
+ attr_reader :attribute_manager
+
+ ##
+ # Parses +str+ into an RDoc::Markup::Document.
+
+ def self.parse str
+ RDoc::Markup::Parser.parse str
+ rescue RDoc::Markup::Parser::Error => e
+ $stderr.puts <<-EOF
+While parsing markup, RDoc encountered a #{e.class}:
+
+#{e}
+\tfrom #{e.backtrace.join "\n\tfrom "}
+
+---8<---
+#{text}
+---8<---
+
+RDoc #{RDoc::VERSION}
+
+Ruby #{RUBY_VERSION}-p#{RUBY_PATCHLEVEL} #{RUBY_RELEASE_DATE}
+
+Please file a bug report with the above information at:
+
+https://github.com/rdoc/rdoc/issues
+
+ EOF
+ raise
+ end
+
+ ##
+ # Take a block of text and use various heuristics to determine its
+ # structure (paragraphs, lists, and so on). Invoke an event handler as we
+ # identify significant chunks.
+
+ def initialize attribute_manager = nil
+ @attribute_manager = attribute_manager || RDoc::Markup::AttributeManager.new
+ @output = nil
+ end
+
+ ##
+ # Add to the sequences used to add formatting to an individual word (such
+ # as *bold*). Matching entries will generate attributes that the output
+ # formatters can recognize by their +name+.
+
+ def add_word_pair(start, stop, name)
+ @attribute_manager.add_word_pair(start, stop, name)
+ end
+
+ ##
+ # Add to the sequences recognized as general markup.
+
+ def add_html(tag, name)
+ @attribute_manager.add_html(tag, name)
+ end
+
+ ##
+ # Add to other inline sequences. For example, we could add WikiWords using
+ # something like:
+ #
+ # parser.add_special(/\b([A-Z][a-z]+[A-Z]\w+)/, :WIKIWORD)
+ #
+ # Each wiki word will be presented to the output formatter via the
+ # accept_special method.
+
+ def add_special(pattern, name)
+ @attribute_manager.add_special(pattern, name)
+ end
+
+ ##
+ # We take +input+, parse it if necessary, then invoke the output +formatter+
+ # using a Visitor to render the result.
+
+ def convert input, formatter
+ document = case input
+ when RDoc::Markup::Document then
+ input
+ else
+ RDoc::Markup::Parser.parse input
+ end
+
+ document.accept formatter
+ end
+
+ autoload :Parser, 'rdoc/markup/parser'
+ autoload :PreProcess, 'rdoc/markup/pre_process'
+
+ # Inline markup classes
+ autoload :AttrChanger, 'rdoc/markup/attr_changer'
+ autoload :AttrSpan, 'rdoc/markup/attr_span'
+ autoload :Attributes, 'rdoc/markup/attributes'
+ autoload :AttributeManager, 'rdoc/markup/attribute_manager'
+ autoload :Special, 'rdoc/markup/special'
+
+ # RDoc::Markup AST
+ autoload :BlankLine, 'rdoc/markup/blank_line'
+ autoload :BlockQuote, 'rdoc/markup/block_quote'
+ autoload :Document, 'rdoc/markup/document'
+ autoload :HardBreak, 'rdoc/markup/hard_break'
+ autoload :Heading, 'rdoc/markup/heading'
+ autoload :Include, 'rdoc/markup/include'
+ autoload :IndentedParagraph, 'rdoc/markup/indented_paragraph'
+ autoload :List, 'rdoc/markup/list'
+ autoload :ListItem, 'rdoc/markup/list_item'
+ autoload :Paragraph, 'rdoc/markup/paragraph'
+ autoload :Raw, 'rdoc/markup/raw'
+ autoload :Rule, 'rdoc/markup/rule'
+ autoload :Verbatim, 'rdoc/markup/verbatim'
+
+ # Formatters
+ autoload :Formatter, 'rdoc/markup/formatter'
+ autoload :FormatterTestCase, 'rdoc/markup/formatter_test_case'
+ autoload :TextFormatterTestCase, 'rdoc/markup/text_formatter_test_case'
+
+ autoload :ToAnsi, 'rdoc/markup/to_ansi'
+ autoload :ToBs, 'rdoc/markup/to_bs'
+ autoload :ToHtml, 'rdoc/markup/to_html'
+ autoload :ToHtmlCrossref, 'rdoc/markup/to_html_crossref'
+ autoload :ToHtmlSnippet, 'rdoc/markup/to_html_snippet'
+ autoload :ToLabel, 'rdoc/markup/to_label'
+ autoload :ToMarkdown, 'rdoc/markup/to_markdown'
+ autoload :ToRdoc, 'rdoc/markup/to_rdoc'
+ autoload :ToTableOfContents, 'rdoc/markup/to_table_of_contents'
+ autoload :ToTest, 'rdoc/markup/to_test'
+ autoload :ToTtOnly, 'rdoc/markup/to_tt_only'
+
+end
+