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# I pulled this into a separate file, because I got
# tired of rebuilding the parser.rb file all the time.
class Puppet::Parser::Parser
require 'puppet/parser/functions'
require 'puppet/parser/files'
require 'puppet/resource/type_collection'
require 'puppet/resource/type_collection_helper'
require 'puppet/resource/type'
require 'monitor'
AST = Puppet::Parser::AST
include Puppet::Resource::TypeCollectionHelper
attr_reader :version, :environment
attr_accessor :files
attr_accessor :lexer
# Add context to a message; useful for error messages and such.
def addcontext(message, obj = nil)
obj ||= @lexer
message += " on line #{obj.line}"
if file = obj.file
message += " in file #{file}"
end
message
end
# Create an AST array containing a single element
def aryfy(arg)
ast AST::ASTArray, :children => [arg]
end
# Create an AST object, and automatically add the file and line information if
# available.
def ast(klass, hash = {})
klass.new ast_context(klass.use_docs, hash[:line]).merge(hash)
end
def ast_context(include_docs = false, ast_line = nil)
result = {
:line => ast_line || lexer.line,
:file => lexer.file
}
result[:doc] = lexer.getcomment(result[:line]) if include_docs
result
end
# The fully qualifed name, with the full namespace.
def classname(name)
[@lexer.namespace, name].join("::").sub(/^::/, '')
end
def clear
initvars
end
# Raise a Parse error.
def error(message, options = {})
if brace = @lexer.expected
message += "; expected '%s'"
end
except = Puppet::ParseError.new(message)
except.line = options[:line] || @lexer.line
except.file = options[:file] || @lexer.file
raise except
end
def file
@lexer.file
end
def file=(file)
unless FileTest.exist?(file)
unless file =~ /\.pp$/
file = file + ".pp"
end
end
raise Puppet::AlreadyImportedError, "Import loop detected" if known_resource_types.watching_file?(file)
watch_file(file)
@lexer.file = file
end
[:hostclass, :definition, :node, :nodes?].each do |method|
define_method(method) do |*args|
known_resource_types.send(method, *args)
end
end
def find_hostclass(namespace, name)
known_resource_types.find_hostclass(namespace, name)
end
def find_definition(namespace, name)
known_resource_types.find_definition(namespace, name)
end
def import(file)
known_resource_types.loader.import(file, @lexer.file)
end
def initialize(env)
# The environment is needed to know how to find the resource type collection.
@environment = env.is_a?(String) ? Puppet::Node::Environment.new(env) : env
initvars
end
# Initialize or reset all of our variables.
def initvars
@lexer = Puppet::Parser::Lexer.new
end
# Split an fq name into a namespace and name
def namesplit(fullname)
ary = fullname.split("::")
n = ary.pop || ""
ns = ary.join("::")
return ns, n
end
def on_error(token,value,stack)
if token == 0 # denotes end of file
value = 'end of file'
else
value = "'#{value[:value]}'"
end
error = "Syntax error at #{value}"
if brace = @lexer.expected
error += "; expected '#{brace}'"
end
except = Puppet::ParseError.new(error)
except.line = @lexer.line
except.file = @lexer.file if @lexer.file
raise except
end
# how should I do error handling here?
def parse(string = nil)
if self.file =~ /\.rb$/
main = parse_ruby_file
else
self.string = string if string
begin
@yydebug = false
main = yyparse(@lexer,:scan)
rescue Racc::ParseError => except
error = Puppet::ParseError.new(except)
error.line = @lexer.line
error.file = @lexer.file
error.set_backtrace except.backtrace
raise error
rescue Puppet::ParseError => except
except.line ||= @lexer.line
except.file ||= @lexer.file
raise except
rescue Puppet::Error => except
# and this is a framework error
except.line ||= @lexer.line
except.file ||= @lexer.file
raise except
rescue Puppet::DevError => except
except.line ||= @lexer.line
except.file ||= @lexer.file
raise except
rescue => except
error = Puppet::DevError.new(except.message)
error.line = @lexer.line
error.file = @lexer.file
error.set_backtrace except.backtrace
raise error
end
end
# Store the results as the top-level class.
return Puppet::Parser::AST::Hostclass.new('', :code => main)
ensure
@lexer.clear
end
def parse_ruby_file
# Execute the contents of the file inside its own "main" object so
# that it can call methods in the resource type API.
main_object = Puppet::DSL::ResourceTypeAPI.new
main_object.instance_eval(File.read(self.file))
# Then extract any types that were created.
Puppet::Parser::AST::ASTArray.new :children => main_object.instance_eval { @__created_ast_objects__ }
end
def string=(string)
@lexer.string = string
end
def version
known_resource_types.version
end
# Add a new file to be checked when we're checking to see if we should be
# reparsed. This is basically only used by the TemplateWrapper to let the
# parser know about templates that should be parsed.
def watch_file(filename)
known_resource_types.watch_file(filename)
end
end
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