D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
proc
/
thread-self
/
root
/
proc
/
thread-self
/
root
/
opt
/
alt
/
ruby19
/
lib64
/
ruby
/
1.9.1
/
rdoc
/
parser
/
Filename :
c.rb
back
Copy
require 'rdoc/parser/ruby' require 'rdoc/known_classes' ## # RDoc::Parser::C attempts to parse C extension files. It looks for # the standard patterns that you find in extensions: <tt>rb_define_class, # rb_define_method</tt> and so on. It tries to find the corresponding # C source for the methods and extract comments, but if we fail # we don't worry too much. # # The comments associated with a Ruby method are extracted from the C # comment block associated with the routine that _implements_ that # method, that is to say the method whose name is given in the # <tt>rb_define_method</tt> call. For example, you might write: # # /* # * Returns a new array that is a one-dimensional flattening of this # * array (recursively). That is, for every element that is an array, # * extract its elements into the new array. # * # * s = [ 1, 2, 3 ] #=> [1, 2, 3] # * t = [ 4, 5, 6, [7, 8] ] #=> [4, 5, 6, [7, 8]] # * a = [ s, t, 9, 10 ] #=> [[1, 2, 3], [4, 5, 6, [7, 8]], 9, 10] # * a.flatten #=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10] # */ # static VALUE # rb_ary_flatten(ary) # VALUE ary; # { # ary = rb_obj_dup(ary); # rb_ary_flatten_bang(ary); # return ary; # } # # ... # # void # Init_Array() # { # ... # rb_define_method(rb_cArray, "flatten", rb_ary_flatten, 0); # # Here RDoc will determine from the rb_define_method line that there's a # method called "flatten" in class Array, and will look for the implementation # in the method rb_ary_flatten. It will then use the comment from that # method in the HTML output. This method must be in the same source file # as the rb_define_method. # # The comment blocks may include special directives: # # [Document-class: +name+] # Documentation for the named class. # # [Document-module: +name+] # Documentation for the named module. # # [Document-const: +name+] # Documentation for the named +rb_define_const+. # # [Document-global: +name+] # Documentation for the named +rb_define_global_const+ # # [Document-variable: +name+] # Documentation for the named +rb_define_variable+ # # [Document-method: +method_name+] # Documentation for the named method. Use this when the method name is # unambiguous. # # [Document-method: <tt>ClassName::method_name<tt>] # Documentation for a singleton method in the given class. Use this when # the method name alone is ambiguous. # # [Document-method: <tt>ClassName#method_name<tt>] # Documentation for a instance method in the given class. Use this when the # method name alone is ambiguous. # # [Document-attr: +name+] # Documentation for the named attribute. # # [call-seq: <i>text up to an empty line</i>] # Because C source doesn't give descriptive names to Ruby-level parameters, # you need to document the calling sequence explicitly # # In addition, RDoc assumes by default that the C method implementing a # Ruby function is in the same source file as the rb_define_method call. # If this isn't the case, add the comment: # # rb_define_method(....); // in filename # # As an example, we might have an extension that defines multiple classes # in its Init_xxx method. We could document them using # # /* # * Document-class: MyClass # * # * Encapsulate the writing and reading of the configuration # * file. ... # */ # # /* # * Document-method: read_value # * # * call-seq: # * cfg.read_value(key) -> value # * cfg.read_value(key} { |key| } -> value # * # * Return the value corresponding to +key+ from the configuration. # * In the second form, if the key isn't found, invoke the # * block and return its value. # */ class RDoc::Parser::C < RDoc::Parser parse_files_matching(/\.(?:([CcHh])\1?|c([+xp])\2|y)\z/) include RDoc::Text ## # C file the parser is parsing attr_accessor :content ## # Maps C variable names to names of ruby classes (andsingleton classes) attr_reader :known_classes ## # Maps C variable names to names of ruby singleton classes attr_reader :singleton_classes ## # Resets cross-file state. Call when parsing different projects that need # separate documentation. def self.reset @@enclosure_classes = {} @@known_bodies = {} end reset ## # Prepare to parse a C file def initialize(top_level, file_name, content, options, stats) super @known_classes = RDoc::KNOWN_CLASSES.dup @content = handle_tab_width handle_ifdefs_in(@content) @classes = {} @singleton_classes = {} @file_dir = File.dirname(@file_name) end ## # Scans #content for rb_define_alias def do_aliases @content.scan(/rb_define_alias\s*\( \s*(\w+), \s*"(.+?)", \s*"(.+?)" \s*\)/xm) do |var_name, new_name, old_name| class_name = @known_classes[var_name] unless class_name then warn "Enclosing class/module %p for alias %s %s not known" % [ var_name, new_name, old_name] next end class_obj = find_class var_name, class_name al = RDoc::Alias.new '', old_name, new_name, '' al.singleton = @singleton_classes.key? var_name comment = find_alias_comment var_name, new_name, old_name comment = strip_stars comment al.comment = comment al.record_location @top_level class_obj.add_alias al @stats.add_alias al end end ## # Scans #content for rb_attr and rb_define_attr def do_attrs @content.scan(/rb_attr\s*\( \s*(\w+), \s*([\w"()]+), \s*([01]), \s*([01]), \s*\w+\);/xm) do |var_name, attr_name, read, write| handle_attr var_name, attr_name, read, write end @content.scan(%r%rb_define_attr\( \s*([\w\.]+), \s*"([^"]+)", \s*(\d+), \s*(\d+)\s*\); %xm) do |var_name, attr_name, read, write| handle_attr var_name, attr_name, read, write end end ## # Scans #content for rb_define_module, rb_define_class, boot_defclass, # rb_define_module_under, rb_define_class_under and rb_singleton_class def do_classes @content.scan(/(\w+)\s* = \s*rb_define_module\s*\(\s*"(\w+)"\s*\)/mx) do |var_name, class_name| handle_class_module(var_name, "module", class_name, nil, nil) end # The '.' lets us handle SWIG-generated files @content.scan(/([\w\.]+)\s* = \s*rb_define_class\s* \( \s*"(\w+)", \s*(\w+)\s* \)/mx) do |var_name, class_name, parent| handle_class_module(var_name, "class", class_name, parent, nil) end @content.scan(/(\w+)\s*=\s*boot_defclass\s*\(\s*"(\w+?)",\s*(\w+?)\s*\)/) do |var_name, class_name, parent| parent = nil if parent == "0" handle_class_module(var_name, "class", class_name, parent, nil) end @content.scan(/(\w+)\s* = \s*rb_define_module_under\s* \( \s*(\w+), \s*"(\w+)" \s*\)/mx) do |var_name, in_module, class_name| handle_class_module(var_name, "module", class_name, nil, in_module) end @content.scan(/([\w\.]+)\s* = # var_name \s*rb_define_class_under\s* \( \s* (\w+), # under \s* "(\w+)", # class_name \s* (?: ([\w\*\s\(\)\.\->]+) | # parent_name rb_path2class\("([\w:]+)"\) # path ) \s* \) /mx) do |var_name, under, class_name, parent_name, path| parent = path || parent_name handle_class_module var_name, 'class', class_name, parent, under end @content.scan(/([\w\.]+)\s* = \s*rb_singleton_class\s* \( \s*(\w+) \s*\)/mx) do |sclass_var, class_var| handle_singleton sclass_var, class_var end end ## # Scans #content for rb_define_variable, rb_define_readonly_variable, # rb_define_const and rb_define_global_const def do_constants @content.scan(%r%\Wrb_define_ ( variable | readonly_variable | const | global_const ) \s*\( (?:\s*(\w+),)? \s*"(\w+)", \s*(.*?)\s*\)\s*; %xm) do |type, var_name, const_name, definition| var_name = "rb_cObject" if !var_name or var_name == "rb_mKernel" handle_constants type, var_name, const_name, definition end @content.scan(%r% \Wrb_curses_define_const \s*\( \s* (\w+) \s* \) \s*;%xm) do |consts| const = consts.first handle_constants 'const', 'mCurses', const, "UINT2NUM(#{const})" end end ## # Scans #content for rb_include_module def do_includes @content.scan(/rb_include_module\s*\(\s*(\w+?),\s*(\w+?)\s*\)/) do |c,m| if cls = @classes[c] m = @known_classes[m] || m incl = cls.add_include RDoc::Include.new(m, "") incl.record_location @top_level end end end ## # Scans #content for rb_define_method, rb_define_singleton_method, # rb_define_module_function, rb_define_private_method, # rb_define_global_function and define_filetest_function def do_methods @content.scan(%r%rb_define_ ( singleton_method | method | module_function | private_method ) \s*\(\s*([\w\.]+), \s*"([^"]+)", \s*(?:RUBY_METHOD_FUNC\(|VALUEFUNC\()?(\w+)\)?, \s*(-?\w+)\s*\) (?:;\s*/[*/]\s+in\s+(\w+?\.(?:cpp|c|y)))? %xm) do |type, var_name, meth_name, function, param_count, source_file| # Ignore top-object and weird struct.c dynamic stuff next if var_name == "ruby_top_self" next if var_name == "nstr" var_name = "rb_cObject" if var_name == "rb_mKernel" handle_method(type, var_name, meth_name, function, param_count, source_file) end @content.scan(%r%rb_define_global_function\s*\( \s*"([^"]+)", \s*(?:RUBY_METHOD_FUNC\(|VALUEFUNC\()?(\w+)\)?, \s*(-?\w+)\s*\) (?:;\s*/[*/]\s+in\s+(\w+?\.[cy]))? %xm) do |meth_name, function, param_count, source_file| handle_method("method", "rb_mKernel", meth_name, function, param_count, source_file) end @content.scan(/define_filetest_function\s*\( \s*"([^"]+)", \s*(?:RUBY_METHOD_FUNC\(|VALUEFUNC\()?(\w+)\)?, \s*(-?\w+)\s*\)/xm) do |meth_name, function, param_count| handle_method("method", "rb_mFileTest", meth_name, function, param_count) handle_method("singleton_method", "rb_cFile", meth_name, function, param_count) end end ## # Finds the comment for an alias on +class_name+ from +new_name+ to # +old_name+ def find_alias_comment class_name, new_name, old_name content =~ %r%((?>/\*.*?\*/\s+)) rb_define_alias\(\s*#{Regexp.escape class_name}\s*, \s*"#{Regexp.escape new_name}"\s*, \s*"#{Regexp.escape old_name}"\s*\);%xm $1 || '' end ## # Finds a comment for rb_define_attr, rb_attr or Document-attr. # # +var_name+ is the C class variable the attribute is defined on. # +attr_name+ is the attribute's name. # # +read+ and +write+ are the read/write flags ('1' or '0'). Either both or # neither must be provided. def find_attr_comment var_name, attr_name, read = nil, write = nil attr_name = Regexp.escape attr_name rw = if read and write then /\s*#{read}\s*,\s*#{write}\s*/xm else /.*?/m end if @content =~ %r%((?>/\*.*?\*/\s+)) rb_define_attr\((?:\s*#{var_name},)?\s* "#{attr_name}"\s*, #{rw}\)\s*;%xm then $1 elsif @content =~ %r%((?>/\*.*?\*/\s+)) rb_attr\(\s*#{var_name}\s*, \s*#{attr_name}\s*, #{rw},.*?\)\s*;%xm then $1 elsif @content =~ %r%Document-attr:\s#{attr_name}\s*?\n ((?>.*?\*/))%xm then $1 else '' end end ## # Find the C code corresponding to a Ruby method def find_body class_name, meth_name, meth_obj, file_content, quiet = false case file_content when %r%((?>/\*.*?\*/\s*)?) ((?:(?:static|SWIGINTERN)\s+)? (?:intern\s+)?VALUE\s+#{meth_name} \s*(\([^)]*\))([^;]|$))%xm then comment = $1 body = $2 offset = $~.offset(2).first remove_private_comments comment if comment # try to find the whole body body = $& if /#{Regexp.escape body}[^(]*?\{.*?^\}/m =~ file_content # The comment block may have been overridden with a 'Document-method' # block. This happens in the interpreter when multiple methods are # vectored through to the same C method but those methods are logically # distinct (for example Kernel.hash and Kernel.object_id share the same # implementation override_comment = find_override_comment class_name, meth_obj comment = override_comment if override_comment find_modifiers comment, meth_obj if comment #meth_obj.params = params meth_obj.start_collecting_tokens tk = RDoc::RubyToken::Token.new nil, 1, 1 tk.set_text body meth_obj.add_token tk meth_obj.comment = strip_stars comment meth_obj.offset = offset meth_obj.line = file_content[0, offset].count("\n") + 1 body when %r%((?>/\*.*?\*/\s*))^\s*(\#\s*define\s+#{meth_name}\s+(\w+))%m then comment = $1 body = $2 offset = $~.offset(2).first find_body class_name, $3, meth_obj, file_content, true find_modifiers comment, meth_obj meth_obj.start_collecting_tokens tk = RDoc::RubyToken::Token.new nil, 1, 1 tk.set_text body meth_obj.add_token tk meth_obj.comment = strip_stars(comment) + meth_obj.comment.to_s meth_obj.offset = offset meth_obj.line = file_content[0, offset].count("\n") + 1 body when %r%^\s*\#\s*define\s+#{meth_name}\s+(\w+)%m then # with no comment we hope the aliased definition has it and use it's # definition body = find_body(class_name, $1, meth_obj, file_content, true) return body if body warn "No definition for #{meth_name}" if @options.verbosity > 1 false else # No body, but might still have an override comment comment = find_override_comment class_name, meth_obj if comment then find_modifiers comment, meth_obj meth_obj.comment = strip_stars comment '' else warn "No definition for #{meth_name}" if @options.verbosity > 1 false end end end ## # Finds a RDoc::NormalClass or RDoc::NormalModule for +raw_name+ def find_class(raw_name, name) unless @classes[raw_name] if raw_name =~ /^rb_m/ container = @top_level.add_module RDoc::NormalModule, name else container = @top_level.add_class RDoc::NormalClass, name end container.record_location @top_level @classes[raw_name] = container end @classes[raw_name] end ## # Look for class or module documentation above Init_+class_name+(void), # in a Document-class +class_name+ (or module) comment or above an # rb_define_class (or module). If a comment is supplied above a matching # Init_ and a rb_define_class the Init_ comment is used. # # /* # * This is a comment for Foo # */ # Init_Foo(void) { # VALUE cFoo = rb_define_class("Foo", rb_cObject); # } # # /* # * Document-class: Foo # * This is a comment for Foo # */ # Init_foo(void) { # VALUE cFoo = rb_define_class("Foo", rb_cObject); # } # # /* # * This is a comment for Foo # */ # VALUE cFoo = rb_define_class("Foo", rb_cObject); def find_class_comment(class_name, class_mod) comment = nil if @content =~ %r% ((?>/\*.*?\*/\s+)) (static\s+)? void\s+ Init_#{class_name}\s*(?:_\(\s*)?\(\s*(?:void\s*)?\)%xmi then comment = $1.sub(%r%Document-(?:class|module):\s+#{class_name}%, '') elsif @content =~ %r%Document-(?:class|module):\s+#{class_name}\s*? (?:<\s+[:,\w]+)?\n((?>.*?\*/))%xm then comment = $1 elsif @content =~ %r%((?>/\*.*?\*/\s+)) ([\w\.\s]+\s* = \s+)?rb_define_(class|module).*?"(#{class_name})"%xm then comment = $1 end return unless comment comment = strip_stars comment comment = look_for_directives_in class_mod, comment class_mod.add_comment comment, @top_level end ## # Finds a comment matching +type+ and +const_name+ either above the # comment or in the matching Document- section. def find_const_comment(type, const_name, class_name = nil) if @content =~ %r%((?>^\s*/\*.*?\*/\s+)) rb_define_#{type}\((?:\s*(\w+),)?\s* "#{const_name}"\s*, .*?\)\s*;%xmi then $1 elsif class_name and @content =~ %r%Document-(?:const|global|variable):\s #{class_name}::#{const_name} \s*?\n((?>.*?\*/))%xm then $1 elsif @content =~ %r%Document-(?:const|global|variable):\s#{const_name} \s*?\n((?>.*?\*/))%xm then $1 else '' end end ## # Handles modifiers in +comment+ and updates +meth_obj+ as appropriate. # # If <tt>:nodoc:</tt> is found, documentation on +meth_obj+ is suppressed. # # If <tt>:yields:</tt> is followed by an argument list it is used for the # #block_params of +meth_obj+. # # If the comment block contains a <tt>call-seq:</tt> section like: # # call-seq: # ARGF.readlines(sep=$/) -> array # ARGF.readlines(limit) -> array # ARGF.readlines(sep, limit) -> array # # ARGF.to_a(sep=$/) -> array # ARGF.to_a(limit) -> array # ARGF.to_a(sep, limit) -> array # # it is used for the parameters of +meth_obj+. def find_modifiers comment, meth_obj # we must handle situations like the above followed by an unindented first # comment. The difficulty is to make sure not to match lines starting # with ARGF at the same indent, but that are after the first description # paragraph. if comment =~ /call-seq:(.*?(?:\S|\*\/?).*?)^\s*(?:\*\/?)?\s*$/m then all_start, all_stop = $~.offset(0) seq_start, seq_stop = $~.offset(1) # we get the following lines that start with the leading word at the # same indent, even if they have blank lines before if $1 =~ /(^\s*\*?\s*\n)+^(\s*\*?\s*\w+)/m then leading = $2 # ' * ARGF' in the example above re = %r% \A( (^\s*\*?\s*\n)+ (^#{Regexp.escape leading}.*?\n)+ )+ ^\s*\*?\s*$ %xm if comment[seq_stop..-1] =~ re then all_stop = seq_stop + $~.offset(0).last seq_stop = seq_stop + $~.offset(1).last end end seq = comment[seq_start..seq_stop] seq.gsub!(/^(\s*\*?\s*?)(\S|\n)/m, '\2') comment.slice! all_start...all_stop meth_obj.call_seq = seq elsif comment.sub!(/\A\/\*\s*call-seq:(.*?)\*\/\Z/, '') then meth_obj.call_seq = $1.strip end look_for_directives_in meth_obj, comment end ## # Finds a <tt>Document-method</tt> override for +meth_obj+ on +class_name+ def find_override_comment class_name, meth_obj name = Regexp.escape meth_obj.name prefix = Regexp.escape meth_obj.name_prefix if @content =~ %r%Document-method:\s+#{class_name}#{prefix}#{name}\s*?\n((?>.*?\*/))%m then $1 elsif @content =~ %r%Document-method:\s#{name}\s*?\n((?>.*?\*/))%m then $1 end end ## # Creates a new RDoc::Attr +attr_name+ on class +var_name+ that is either # +read+, +write+ or both def handle_attr(var_name, attr_name, read, write) rw = '' rw << 'R' if '1' == read rw << 'W' if '1' == write class_name = @known_classes[var_name] return unless class_name class_obj = find_class var_name, class_name return unless class_obj comment = find_attr_comment var_name, attr_name comment = strip_stars comment name = attr_name.gsub(/rb_intern\("([^"]+)"\)/, '\1') attr = RDoc::Attr.new '', name, rw, comment attr.record_location @top_level class_obj.add_attribute attr @stats.add_attribute attr end ## # Creates a new RDoc::NormalClass or RDoc::NormalModule based on +type+ # named +class_name+ in +parent+ which was assigned to the C +var_name+. def handle_class_module(var_name, type, class_name, parent, in_module) parent_name = @known_classes[parent] || parent if in_module then enclosure = @classes[in_module] || @@enclosure_classes[in_module] if enclosure.nil? and enclosure = @known_classes[in_module] then enc_type = /^rb_m/ =~ in_module ? "module" : "class" handle_class_module in_module, enc_type, enclosure, nil, nil enclosure = @classes[in_module] end unless enclosure then warn "Enclosing class/module '#{in_module}' for #{type} #{class_name} not known" return end else enclosure = @top_level end if type == "class" then full_name = if RDoc::ClassModule === enclosure then enclosure.full_name + "::#{class_name}" else class_name end if @content =~ %r%Document-class:\s+#{full_name}\s*<\s+([:,\w]+)% then parent_name = $1 end cm = enclosure.add_class RDoc::NormalClass, class_name, parent_name else cm = enclosure.add_module RDoc::NormalModule, class_name end cm.record_location enclosure.top_level find_class_comment cm.full_name, cm case cm when RDoc::NormalClass @stats.add_class cm when RDoc::NormalModule @stats.add_module cm end @classes[var_name] = cm @@enclosure_classes[var_name] = cm @known_classes[var_name] = cm.full_name end ## # Adds constants. By providing some_value: at the start of the comment you # can override the C value of the comment to give a friendly definition. # # /* 300: The perfect score in bowling */ # rb_define_const(cFoo, "PERFECT", INT2FIX(300); # # Will override <tt>INT2FIX(300)</tt> with the value +300+ in the output # RDoc. Values may include quotes and escaped colons (\:). def handle_constants(type, var_name, const_name, definition) class_name = @known_classes[var_name] return unless class_name class_obj = find_class var_name, class_name unless class_obj then warn "Enclosing class/module #{const_name.inspect} not known" return end comment = find_const_comment type, const_name, class_name comment = strip_stars comment comment = normalize_comment comment # In the case of rb_define_const, the definition and comment are in # "/* definition: comment */" form. The literal ':' and '\' characters # can be escaped with a backslash. if type.downcase == 'const' then elements = comment.split ':' if elements.nil? or elements.empty? then con = RDoc::Constant.new const_name, definition, comment else new_definition = elements[0..-2].join(':') if new_definition.empty? then # Default to literal C definition new_definition = definition else new_definition.gsub!("\:", ":") new_definition.gsub!("\\", '\\') end new_definition.sub!(/\A(\s+)/, '') new_comment = if $1.nil? then elements.last.lstrip else "#{$1}#{elements.last.lstrip}" end con = RDoc::Constant.new const_name, new_definition, new_comment end else con = RDoc::Constant.new const_name, definition, comment end con.record_location @top_level @stats.add_constant con class_obj.add_constant con end ## # Removes #ifdefs that would otherwise confuse us def handle_ifdefs_in(body) body.gsub(/^#ifdef HAVE_PROTOTYPES.*?#else.*?\n(.*?)#endif.*?\n/m, '\1') end ## # Adds an RDoc::AnyMethod +meth_name+ defined on a class or module assigned # to +var_name+. +type+ is the type of method definition function used. # +singleton_method+ and +module_function+ create a singleton method. def handle_method(type, var_name, meth_name, function, param_count, source_file = nil) class_name = @known_classes[var_name] singleton = @singleton_classes.key? var_name return unless class_name class_obj = find_class var_name, class_name if class_obj then if meth_name == 'initialize' then meth_name = 'new' singleton = true type = 'method' # force public end meth_obj = RDoc::AnyMethod.new '', meth_name meth_obj.c_function = function meth_obj.singleton = singleton || %w[singleton_method module_function].include?(type) p_count = Integer(param_count) rescue -1 if source_file then file_name = File.join @file_dir, source_file if File.exist? file_name then file_content = (@@known_bodies[file_name] ||= File.read(file_name)) else warn "unknown source #{source_file} for #{meth_name} in #{@file_name}" end else file_content = @content end body = find_body class_name, function, meth_obj, file_content if body and meth_obj.document_self then meth_obj.params = if p_count < -1 then # -2 is Array '(*args)' elsif p_count == -1 then # argc, argv rb_scan_args body else "(#{(1..p_count).map { |i| "p#{i}" }.join ', '})" end meth_obj.record_location @top_level class_obj.add_method meth_obj @stats.add_method meth_obj meth_obj.visibility = :private if 'private_method' == type end end end ## # Registers a singleton class +sclass_var+ as a singleton of +class_var+ def handle_singleton sclass_var, class_var class_name = @known_classes[class_var] @known_classes[sclass_var] = class_name @singleton_classes[sclass_var] = class_name end ## # Normalizes tabs in +body+ def handle_tab_width(body) if /\t/ =~ body tab_width = @options.tab_width body.split(/\n/).map do |line| 1 while line.gsub!(/\t+/) do ' ' * (tab_width * $&.length - $`.length % tab_width) end && $~ line end.join "\n" else body end end ## # Look for directives in a normal comment block: # # /* # * :title: My Awesome Project # */ # # This method modifies the +comment+ def look_for_directives_in context, comment @preprocess.handle comment, context do |directive, param| case directive when 'main' then @options.main_page = param '' when 'title' then @options.default_title = param if @options.respond_to? :default_title= '' end end comment end ## # Extracts parameters from the +method_body+ and returns a method # parameter string. Follows 1.9.3dev's scan-arg-spec, see README.EXT def rb_scan_args method_body method_body =~ /rb_scan_args\((.*?)\)/m return '(*args)' unless $1 $1.split(/,/)[2] =~ /"(.*?)"/ # format argument format = $1.split(//) lead = opt = trail = 0 if format.first =~ /\d/ then lead = $&.to_i format.shift if format.first =~ /\d/ then opt = $&.to_i format.shift if format.first =~ /\d/ then trail = $&.to_i format.shift block_arg = true end end end if format.first == '*' and not block_arg then var = true format.shift if format.first =~ /\d/ then trail = $&.to_i format.shift end end if format.first == ':' then hash = true format.shift end if format.first == '&' then block = true format.shift end # if the format string is not empty there's a bug in the C code, ignore it args = [] position = 1 (1...(position + lead)).each do |index| args << "p#{index}" end position += lead (position...(position + opt)).each do |index| args << "p#{index} = v#{index}" end position += opt if var then args << '*args' position += 1 end (position...(position + trail)).each do |index| args << "p#{index}" end position += trail if hash then args << "p#{position} = {}" position += 1 end args << '&block' if block "(#{args.join ', '})" end ## # Removes lines that are commented out that might otherwise get picked up # when scanning for classes and methods def remove_commented_out_lines @content.gsub!(%r%//.*rb_define_%, '//') end ## # Removes private comments from +comment+ def remove_private_comments(comment) comment.gsub!(/\/?\*--\n(.*?)\/?\*\+\+/m, '') comment.sub!(/\/?\*--\n.*/m, '') end ## # Extracts the classes, modules, methods, attributes, constants and aliases # from a C file and returns an RDoc::TopLevel for this file def scan remove_commented_out_lines do_classes do_constants do_methods do_includes do_aliases do_attrs @top_level end end