class RDoc::MethodAttr

Abstract class representing either a method or an attribute.

Attributes

add_line_numbers[RW]

Allows controlling whether #markup_code adds line numbers to the source code.

aliases[R]

Array of other names for this method/attribute

arglists[R]

The #call_seq or the #param_seq with method name, if there is no call_seq.

block_params[R]

Parameters yielded by the called block

call_seq[RW]

Different ways to call this method

is_alias_for[RW]

The method/attribute we're aliasing

name[RW]

Name of this method/attribute.

param_seq[R]

Pretty parameter list for this method

params[RW]

Parameters for this method

singleton[RW]

Is this a singleton method/attribute?

text[R]

Source file token stream

visibility[RW]

public, protected, private

Public Class Methods

new(text, name) click to toggle source

Creates a new MethodAttr from token stream text and method or attribute name name.

Usually this is called by super from a subclass.

Calls superclass method RDoc::CodeObject.new

# File lib/rdoc/method_attr.rb, line 77
def initialize text, name
  super()

  @text = text
  @name = name

  @aliases      = []
  @is_alias_for = nil
  @parent_name  = nil
  @singleton    = nil
  @visibility   = :public
  @see = false

  @arglists     = nil
  @block_params = nil
  @call_seq     = nil
  @param_seq    = nil
  @params       = nil
end

Public Instance Methods

<=>(other) click to toggle source

Order by singleton then name

# File lib/rdoc/method_attr.rb, line 112
def <=>(other)
  return unless other.respond_to?(:singleton) &&
                other.respond_to?(:name)

  [     @singleton ? 0 : 1,       name] <=>
  [other.singleton ? 0 : 1, other.name]
end

add_alias(an_alias, context) click to toggle source

Abstract method. Contexts in their building phase call this to register a new alias for this known method/attribute.

creates a new AnyMethod/Attribute named an_alias.new_name;
adds self as an alias for the new method or attribute
adds the method or attribute to aliases
adds the method or attribute to context.

# File lib/rdoc/method_attr.rb, line 208
def add_alias(an_alias, context)
  raise NotImplementedError
end

add_line_numbers(src) click to toggle source

Prepend src with line numbers. Relies on the first line of a source code listing having:

# File xxxxx, line dddd

If it has this comment then line numbers are added to src and the , line dddd portion of the comment is removed.

# File lib/rdoc/generator/markup.rb, line 86
def add_line_numbers(src)
  return unless src.sub!(/\A(.*)(, line (\d+))/, '\1')
  first = $3.to_i - 1
  last  = first + src.count("\n")
  size = last.to_s.length

  line = first
  src.gsub!(/^/) do
    res = if line == first then
            " " * (size + 1)
          else
            "<span class=\"line-num\">%2$*1$d</span> " % [size, line]
          end

    line += 1
    res
  end
end

aref() click to toggle source

HTML fragment reference for this method

# File lib/rdoc/method_attr.rb, line 215
def aref
  type = singleton ? 'c' : 'i'
  # % characters are not allowed in html names => dash instead
  "#{aref_prefix}-#{type}-#{html_name}"
end

aref_prefix() click to toggle source

Prefix for aref, defined by subclasses.

# File lib/rdoc/method_attr.rb, line 224
def aref_prefix
  raise NotImplementedError
end

block_params=(value) click to toggle source

Attempts to sanitize the content passed by the Ruby parser: remove outer parentheses, etc.

# File lib/rdoc/method_attr.rb, line 232
def block_params=(value)
  # 'yield.to_s' or 'assert yield, msg'
  return @block_params = '' if value =~ /^[\.,]/

  # remove trailing 'if/unless ...'
  return @block_params = '' if value =~ /^(if|unless)\s/

  value = $1.strip if value =~ /^(.+)\s(if|unless)\s/

  # outer parentheses
  value = $1 if value =~ /^\s*\((.*)\)\s*$/
  value = value.strip

  # proc/lambda
  return @block_params = $1 if value =~ /^(proc|lambda)(\s*\{|\sdo)/

  # surrounding +...+ or [...]
  value = $1.strip if value =~ /^\+(.*)\+$/
  value = $1.strip if value =~ /^\[(.*)\]$/

  return @block_params = '' if value.empty?

  # global variable
  return @block_params = 'str' if value =~ /^\$[&0-9]$/

  # wipe out array/hash indices
  value.gsub!(/(\w)\[[^\[]+\]/, '\1')

  # remove @ from class/instance variables
  value.gsub!(/@@?([a-z0-9_]+)/, '\1')

  # method calls => method name
  value.gsub!(/([A-Z:a-z0-9_]+)\.([a-z0-9_]+)(\s*\(\s*[a-z0-9_.,\s]*\s*\)\s*)?/) do
    case $2
    when 'to_s'      then $1
    when 'const_get' then 'const'
    when 'new' then
      $1.split('::').last.  # ClassName => class_name
        gsub(/([A-Z]+)([A-Z][a-z])/,'\1_\2').
        gsub(/([a-z\d])([A-Z])/,'\1_\2').
        downcase
    else
      $2
    end
  end

  # class prefixes
  value.gsub!(/[A-Za-z0-9_:]+::/, '')

  # simple expressions
  value = $1 if value =~ /^([a-z0-9_]+)\s*[-*+\/]/

  @block_params = value.strip
end

documented?() click to toggle source

A method/attribute is documented if any of the following is true:

it was marked with :nodoc:;
it has a comment;
it is an alias for a documented method;
it has a #see method that is documented.

Calls superclass method RDoc::CodeObject#documented?

# File lib/rdoc/method_attr.rb, line 131
def documented?
  super or
    (is_alias_for and is_alias_for.documented?) or
    (see and see.documented?)
end

full_name() click to toggle source

Full method/attribute name including namespace

# File lib/rdoc/method_attr.rb, line 299
def full_name
  @full_name ||= "#{parent_name}#{pretty_name}"
end

html_name() click to toggle source

HTML id-friendly method/attribute name

# File lib/rdoc/method_attr.rb, line 290
def html_name
  require 'cgi'

  CGI.escape(@name.gsub('-', '-2D')).gsub('%','-').sub(/^-/, '')
end

markup_code() click to toggle source

Turns the method's token stream into HTML.

Prepends line numbers if add_line_numbers is true.

# File lib/rdoc/generator/markup.rb, line 110
def markup_code
  return '' unless @token_stream

  src = RDoc::TokenStream.to_html @token_stream

  # dedent the source
  indent = src.length
  lines = src.lines.to_a
  lines.shift if src =~ /\A.*#\ *File/i # remove '# File' comment
  lines.each do |line|
    if line =~ /^ *(?=\S)/
      n = $&.length
      indent = n if n < indent
      break if n == 0
    end
  end
  src.gsub!(/^#{' ' * indent}/, '') if indent > 0

  add_line_numbers(src) if RDoc::MethodAttr.add_line_numbers

  src
end

name_prefix() click to toggle source

'::' for a class method/attribute, '#' for an instance method.

# File lib/rdoc/method_attr.rb, line 318
def name_prefix
  @singleton ? '::' : '#'
end

output_name(context) click to toggle source

Name for output to HTML. For class methods the full name with a “.” is used like SomeClass.method_name. For instance methods the class name is used if context does not match the parent.

This is to help prevent people from using: to call class methods.

# File lib/rdoc/method_attr.rb, line 329
def output_name context
  return "#{name_prefix}#{@name}" if context == parent

  "#{parent_name}#{@singleton ? '.' : '#'}#{@name}"
end

parent_name() click to toggle source

Name of our parent with special handling for un-marshaled methods

Calls superclass method RDoc::CodeObject#parent_name

# File lib/rdoc/method_attr.rb, line 359
def parent_name
  @parent_name || super
end

path() click to toggle source

Path to this method for use with HTML generator output.

# File lib/rdoc/method_attr.rb, line 352
def path
  "#{@parent.path}##{aref}"
end

pretty_name() click to toggle source

Method/attribute name with class/instance indicator

# File lib/rdoc/method_attr.rb, line 338
def pretty_name
  "#{name_prefix}#{@name}"
end

search_record() click to toggle source

Used by RDoc::Generator::JsonIndex to create a record for the search engine.

# File lib/rdoc/method_attr.rb, line 397
def search_record
  [
    @name,
    full_name,
    @name,
    @parent.full_name,
    path,
    params,
    snippet(@comment),
  ]
end

see() click to toggle source

A method/attribute to look at, in particular if this method/attribute has no documentation.

It can be a method/attribute of the superclass or of an included module, including the Kernel module, which is always appended to the included modules.

Returns nil if there is no such method/attribute. The #is_alias_for method/attribute, if any, is not included.

Templates may generate a “see also …” if this method/attribute has documentation, and “see …” if it does not.

# File lib/rdoc/method_attr.rb, line 151
def see
  @see = find_see if @see == false
  @see
end

store=(store) click to toggle source

Sets the store for this class or module and its contained code objects.

Calls superclass method RDoc::CodeObject#store=

# File lib/rdoc/method_attr.rb, line 159
def store= store
  super

  @file = @store.add_file @file.full_name if @file
end

type() click to toggle source

Type of method/attribute (class or instance)

# File lib/rdoc/method_attr.rb, line 345
def type
  singleton ? 'class' : 'instance'
end