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|
# Puppet "parser" for the rdoc system
# The parser uses puppet parser and traverse the AST to instruct RDoc about
# our current structures. It also parses ruby files that could contain
# either custom facts or puppet plugins (functions, types...)
# rdoc mandatory includes
require "rdoc/code_objects"
require "puppet/util/rdoc/code_objects"
require "rdoc/tokenstream"
require "rdoc/markup/simple_markup/preprocess"
require "rdoc/parsers/parserfactory"
module RDoc
class Parser
extend ParserFactory
SITE = "__site__"
attr_accessor :input_file_name, :top_level
# parser registration into RDoc
parse_files_matching(/\.(rb|pp)$/)
# called with the top level file
def initialize(top_level, file_name, content, options, stats)
@options = options
@stats = stats
@input_file_name = file_name
@top_level = PuppetTopLevel.new(top_level)
@progress = $stderr unless options.quiet
end
# main entry point
def scan
environment = Puppet::Node::Environment.new
@known_resource_types = environment.known_resource_types
unless environment.known_resource_types.watching_file?(@input_file_name)
Puppet.info "rdoc: scanning #{@input_file_name}"
if @input_file_name =~ /\.pp$/
@parser = Puppet::Parser::Parser.new(environment)
@parser.file = @input_file_name
@parser.parse.instantiate('').each do |type|
@known_resource_types.add type
end
end
end
scan_top_level(@top_level)
@top_level
end
# Due to a bug in RDoc, we need to roll our own find_module_named
# The issue is that RDoc tries harder by asking the parent for a class/module
# of the name. But by doing so, it can mistakenly use a module of same name
# but from which we are not descendant.
def find_object_named(container, name)
return container if container.name == name
container.each_classmodule do |m|
return m if m.name == name
end
nil
end
# walk down the namespace and lookup/create container as needed
def get_class_or_module(container, name)
# class ::A -> A is in the top level
if name =~ /^::/
container = @top_level
end
names = name.split('::')
final_name = names.pop
names.each do |name|
prev_container = container
container = find_object_named(container, name)
container ||= prev_container.add_class(PuppetClass, name, nil)
end
[container, final_name]
end
# split_module tries to find if +path+ belongs to the module path
# if it does, it returns the module name, otherwise if we are sure
# it is part of the global manifest path, "__site__" is returned.
# And finally if this path couldn't be mapped anywhere, nil is returned.
def split_module(path)
# find a module
fullpath = File.expand_path(path)
Puppet.debug "rdoc: testing #{fullpath}"
if fullpath =~ /(.*)\/([^\/]+)\/(?:manifests|plugins|lib)\/.+\.(pp|rb)$/
modpath = $1
name = $2
Puppet.debug "rdoc: module #{name} into #{modpath} ?"
Puppet::Module.modulepath.each do |mp|
if File.identical?(modpath,mp)
Puppet.debug "rdoc: found module #{name}"
return name
end
end
end
if fullpath =~ /\.(pp|rb)$/
# there can be paths we don't want to scan under modules
# imagine a ruby or manifest that would be distributed as part as a module
# but we don't want those to be hosted under <site>
Puppet::Module.modulepath.each do |mp|
# check that fullpath is a descendant of mp
dirname = fullpath
while (dirname = File.dirname(dirname)) != '/'
return nil if File.identical?(dirname,mp)
end
end
end
# we are under a global manifests
Puppet.debug "rdoc: global manifests"
SITE
end
# create documentation for the top level +container+
def scan_top_level(container)
# use the module README as documentation for the module
comment = ""
readme = File.join(File.dirname(File.dirname(@input_file_name)), "README")
comment = File.open(readme,"r") { |f| f.read } if FileTest.readable?(readme)
look_for_directives_in(container, comment) unless comment.empty?
# infer module name from directory
name = split_module(@input_file_name)
if name.nil?
# skip .pp files that are not in manifests directories as we can't guarantee they're part
# of a module or the global configuration.
container.document_self = false
return
end
Puppet.debug "rdoc: scanning for #{name}"
container.module_name = name
container.global=true if name == SITE
@stats.num_modules += 1
container, name = get_class_or_module(container,name)
mod = container.add_module(PuppetModule, name)
mod.record_location(@top_level)
mod.comment = comment
if @input_file_name =~ /\.pp$/
parse_elements(mod)
elsif @input_file_name =~ /\.rb$/
parse_plugins(mod)
end
end
# create documentation for include statements we can find in +code+
# and associate it with +container+
def scan_for_include_or_require(container, code)
code = [code] unless code.is_a?(Array)
code.each do |stmt|
scan_for_include_or_require(container,stmt.children) if stmt.is_a?(Puppet::Parser::AST::ASTArray)
if stmt.is_a?(Puppet::Parser::AST::Function) and ['include','require'].include?(stmt.name)
stmt.arguments.each do |included|
Puppet.debug "found #{stmt.name}: #{included}"
container.send("add_#{stmt.name}",Include.new(included.to_s, stmt.doc))
end
end
end
end
# create documentation for realize statements we can find in +code+
# and associate it with +container+
def scan_for_realize(container, code)
code = [code] unless code.is_a?(Array)
code.each do |stmt|
scan_for_realize(container,stmt.children) if stmt.is_a?(Puppet::Parser::AST::ASTArray)
if stmt.is_a?(Puppet::Parser::AST::Function) and stmt.name == 'realize'
stmt.arguments.each do |realized|
Puppet.debug "found #{stmt.name}: #{realized}"
container.add_realize(Include.new(realized.to_s, stmt.doc))
end
end
end
end
# create documentation for global variables assignements we can find in +code+
# and associate it with +container+
def scan_for_vardef(container, code)
code = [code] unless code.is_a?(Array)
code.each do |stmt|
scan_for_vardef(container,stmt.children) if stmt.is_a?(Puppet::Parser::AST::ASTArray)
if stmt.is_a?(Puppet::Parser::AST::VarDef)
Puppet.debug "rdoc: found constant: #{stmt.name} = #{stmt.value}"
container.add_constant(Constant.new(stmt.name.to_s, stmt.value.to_s, stmt.doc))
end
end
end
# create documentation for resources we can find in +code+
# and associate it with +container+
def scan_for_resource(container, code)
code = [code] unless code.is_a?(Array)
code.each do |stmt|
scan_for_resource(container,stmt.children) if stmt.is_a?(Puppet::Parser::AST::ASTArray)
if stmt.is_a?(Puppet::Parser::AST::Resource) and !stmt.type.nil?
begin
type = stmt.type.split("::").collect { |s| s.capitalize }.join("::")
stmt.instances.each do |inst|
title = inst.title.is_a?(Puppet::Parser::AST::ASTArray) ? inst.title.to_s.gsub(/\[(.*)\]/,'\1') : inst.title.to_s
Puppet.debug "rdoc: found resource: #{type}[#{title}]"
param = []
inst.parameters.children.each do |p|
res = {}
res["name"] = p.param
res["value"] = "#{p.value.to_s}" unless p.value.nil?
param << res
end
container.add_resource(PuppetResource.new(type, title, stmt.doc, param))
end
rescue => detail
raise Puppet::ParseError, "impossible to parse resource in #{stmt.file} at line #{stmt.line}: #{detail}"
end
end
end
end
def resource_stmt_to_ref(stmt)
type = stmt.type.split("::").collect { |s| s.capitalize }.join("::")
title = stmt.title.is_a?(Puppet::Parser::AST::ASTArray) ? stmt.title.to_s.gsub(/\[(.*)\]/,'\1') : stmt.title.to_s
param = stmt.params.children.collect do |p|
{"name" => p.param, "value" => p.value.to_s}
end
PuppetResource.new(type, title, stmt.doc, param)
end
# create documentation for a class named +name+
def document_class(name, klass, container)
Puppet.debug "rdoc: found new class #{name}"
container, name = get_class_or_module(container, name)
superclass = klass.parent
superclass = "" if superclass.nil? or superclass.empty?
@stats.num_classes += 1
comment = klass.doc
look_for_directives_in(container, comment) unless comment.empty?
cls = container.add_class(PuppetClass, name, superclass)
# it is possible we already encountered this class, while parsing some namespaces
# from other classes of other files. But at that time we couldn't know this class superclass
# so, now we know it and force it.
cls.superclass = superclass
cls.record_location(@top_level)
# scan class code for include
code = klass.code.children if klass.code.is_a?(Puppet::Parser::AST::ASTArray)
code ||= klass.code
unless code.nil?
scan_for_include_or_require(cls, code)
scan_for_realize(cls, code)
scan_for_resource(cls, code) if Puppet.settings[:document_all]
end
cls.comment = comment
rescue => detail
raise Puppet::ParseError, "impossible to parse class '#{name}' in #{klass.file} at line #{klass.line}: #{detail}"
end
# create documentation for a node
def document_node(name, node, container)
Puppet.debug "rdoc: found new node #{name}"
superclass = node.parent
superclass = "" if superclass.nil? or superclass.empty?
comment = node.doc
look_for_directives_in(container, comment) unless comment.empty?
n = container.add_node(name, superclass)
n.record_location(@top_level)
code = node.code.children if node.code.is_a?(Puppet::Parser::AST::ASTArray)
code ||= node.code
unless code.nil?
scan_for_include_or_require(n, code)
scan_for_realize(n, code)
scan_for_vardef(n, code)
scan_for_resource(n, code) if Puppet.settings[:document_all]
end
n.comment = comment
rescue => detail
raise Puppet::ParseError, "impossible to parse node '#{name}' in #{node.file} at line #{node.line}: #{detail}"
end
# create documentation for a define
def document_define(name, define, container)
Puppet.debug "rdoc: found new definition #{name}"
# find superclas if any
@stats.num_methods += 1
# find the parent
# split define name by :: to find the complete module hierarchy
container, name = get_class_or_module(container,name)
# build up declaration
declaration = ""
define.arguments.each do |arg,value|
declaration << "\$#{arg}"
unless value.nil?
declaration << " => "
case value
when Puppet::Parser::AST::Leaf
declaration << "'#{value.value}'"
when Puppet::Parser::AST::ASTArray
declaration << "[#{value.children.collect { |v| "'#{v}'" }.join(", ")}]"
else
declaration << "#{value.to_s}"
end
end
declaration << ", "
end
declaration.chop!.chop! if declaration.size > 1
# register method into the container
meth = AnyMethod.new(declaration, name)
meth.comment = define.doc
container.add_method(meth)
look_for_directives_in(container, meth.comment) unless meth.comment.empty?
meth.params = "( #{declaration} )"
meth.visibility = :public
meth.document_self = true
meth.singleton = false
rescue => detail
raise Puppet::ParseError, "impossible to parse definition '#{name}' in #{define.file} at line #{define.line}: #{detail}"
end
# Traverse the AST tree and produce code-objects node
# that contains the documentation
def parse_elements(container)
Puppet.debug "rdoc: scanning manifest"
@known_resource_types.hostclasses.values.sort { |a,b| a.name <=> b.name }.each do |klass|
name = klass.name
if klass.file == @input_file_name
unless name.empty?
document_class(name,klass,container)
else # on main class document vardefs
code = klass.code.children if klass.code.is_a?(Puppet::Parser::AST::ASTArray)
code ||= klass.code
scan_for_vardef(container, code) unless code.nil?
end
end
end
@known_resource_types.definitions.each do |name, define|
if define.file == @input_file_name
document_define(name,define,container)
end
end
@known_resource_types.nodes.each do |name, node|
if node.file == @input_file_name
document_node(name.to_s,node,container)
end
end
end
# create documentation for plugins
def parse_plugins(container)
Puppet.debug "rdoc: scanning plugin or fact"
if @input_file_name =~ /\/facter\/[^\/]+\.rb$/
parse_fact(container)
else
parse_puppet_plugin(container)
end
end
# this is a poor man custom fact parser :-)
def parse_fact(container)
comments = ""
current_fact = nil
File.open(@input_file_name) do |of|
of.each do |line|
# fetch comments
if line =~ /^[ \t]*# ?(.*)$/
comments += $1 + "\n"
elsif line =~ /^[ \t]*Facter.add\(['"](.*?)['"]\)/
current_fact = Fact.new($1,{})
look_for_directives_in(container, comments) unless comments.empty?
current_fact.comment = comments
container.add_fact(current_fact)
current_fact.record_location(@top_level)
comments = ""
Puppet.debug "rdoc: found custom fact #{current_fact.name}"
elsif line =~ /^[ \t]*confine[ \t]*:(.*?)[ \t]*=>[ \t]*(.*)$/
current_fact.confine = { :type => $1, :value => $2 } unless current_fact.nil?
else # unknown line type
comments =""
end
end
end
end
# this is a poor man puppet plugin parser :-)
# it doesn't extract doc nor desc :-(
def parse_puppet_plugin(container)
comments = ""
current_plugin = nil
File.open(@input_file_name) do |of|
of.each do |line|
# fetch comments
if line =~ /^[ \t]*# ?(.*)$/
comments += $1 + "\n"
elsif line =~ /^[ \t]*newfunction[ \t]*\([ \t]*:(.*?)[ \t]*,[ \t]*:type[ \t]*=>[ \t]*(:rvalue|:lvalue)\)/
current_plugin = Plugin.new($1, "function")
container.add_plugin(current_plugin)
look_for_directives_in(container, comments) unless comments.empty?
current_plugin.comment = comments
current_plugin.record_location(@top_level)
comments = ""
Puppet.debug "rdoc: found new function plugins #{current_plugin.name}"
elsif line =~ /^[ \t]*Puppet::Type.newtype[ \t]*\([ \t]*:(.*?)\)/
current_plugin = Plugin.new($1, "type")
container.add_plugin(current_plugin)
look_for_directives_in(container, comments) unless comments.empty?
current_plugin.comment = comments
current_plugin.record_location(@top_level)
comments = ""
Puppet.debug "rdoc: found new type plugins #{current_plugin.name}"
elsif line =~ /module Puppet::Parser::Functions/
# skip
else # unknown line type
comments =""
end
end
end
end
# look_for_directives_in scans the current +comment+ for RDoc directives
def look_for_directives_in(context, comment)
preprocess = SM::PreProcess.new(@input_file_name, @options.rdoc_include)
preprocess.handle(comment) do |directive, param|
case directive
when "stopdoc"
context.stop_doc
""
when "startdoc"
context.start_doc
context.force_documentation = true
""
when "enddoc"
#context.done_documenting = true
#""
throw :enddoc
when "main"
options = Options.instance
options.main_page = param
""
when "title"
options = Options.instance
options.title = param
""
when "section"
context.set_current_section(param, comment)
comment.replace("") # 1.8 doesn't support #clear
break
else
warn "Unrecognized directive '#{directive}'"
break
end
end
remove_private_comments(comment)
end
def remove_private_comments(comment)
comment.gsub!(/^#--.*?^#\+\+/m, '')
comment.sub!(/^#--.*/m, '')
end
end
end
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