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|
module Puppet::Pops
module PN
KEY_PATTERN = /^[A-Za-z_-][0-9A-Za-z_-]*$/
def pnError(message)
raise ArgumentError, message
end
def as_call(name)
Call.new(name, self)
end
def as_parameters
[self]
end
def ==(o)
eql?(o)
end
def to_s
s = ''
format(nil, s)
s
end
def with_name(name)
Entry.new(name, self)
end
def double_quote(str, bld)
bld << '"'
str.each_codepoint do |codepoint|
case codepoint
when 0x09
bld << '\\t'
when 0x0a
bld << '\\n'
when 0x0d
bld << '\\r'
when 0x22
bld << '\\"'
when 0x5c
bld << '\\\\'
else
if codepoint < 0x20
bld << sprintf('\\o%3.3o', codepoint)
elsif codepoint <= 0x7f
bld << codepoint
else
bld << [codepoint].pack('U')
end
end
end
bld << '"'
end
def format_elements(elements, indent, b)
elements.each_with_index do |e, i|
if indent
b << "\n" << indent.current
elsif i > 0
b << ' '
end
e.format(indent, b)
end
end
class Indent
attr_reader :current
def initialize(indent = ' ', current = '')
@indent = indent
@current = current
end
def increase
Indent.new(@indent, @current + @indent)
end
end
class Call
include PN
attr_reader :name, :elements
def initialize(name, *elements)
@name = name
@elements = elements
end
def [](idx)
@elements[idx]
end
def as_call(name)
Call.new(name, *@elements)
end
def as_parameters
List.new(@elements)
end
def eql?(o)
o.is_a?(Call) && @name == o.name && @elements == o.elements
end
def format(indent, b)
b << '(' << @name
if @elements.size > 0
b << ' ' unless indent
format_elements(@elements, indent ? indent.increase : nil, b)
end
b << ')'
end
def to_data
{ '^' => [@name] + @elements.map { |e| e.to_data } }
end
end
class Entry
attr_reader :key, :value
def initialize(key, value)
@key = key
@value = value
end
def eql?(o)
o.is_a?(Entry) && @key == o.key && @value == o.value
end
alias == eql?
end
class List
include PN
attr_reader :elements
def initialize(elements)
@elements = elements
end
def [](idx)
@elements[idx]
end
def as_call(name)
Call.new(name, *@elements)
end
def as_parameters
@elements
end
def eql?(o)
o.is_a?(List) && @elements == o.elements
end
def format(indent, b)
b << '['
format_elements(@elements, indent ? indent.increase : nil, b) unless @elements.empty?
b << ']'
end
def to_data
@elements.map { |e| e.to_data }
end
end
class Literal
include PN
attr_reader :value
def initialize(value)
@value = value
end
def format(indent, b)
if @value.nil?
b << 'nil'
elsif value.is_a?(String)
double_quote(value, b)
else
b << value.to_s
end
end
def eql?(o)
o.is_a?(Literal) && @value == o.value
end
def to_data
@value
end
end
class Map
include PN
attr_reader :entries
def initialize(entries)
entries.each { |e| pnError("key #{e.key} does not conform to pattern /#{KEY_PATTERN.source}/)") unless e.key =~ KEY_PATTERN }
@entries = entries
end
def eql?(o)
o.is_a?(Map) && @entries == o.entries
end
def format(indent, b)
local_indent = indent ? indent.increase : nil
b << '{'
@entries.each_with_index do |e,i|
if indent
b << "\n" << local_indent.current
elsif i > 0
b << ' '
end
b << ':' << e.key
b << ' '
e.value.format(local_indent, b)
end
b << '}'
end
def to_data
r = []
@entries.each { |e| r << e.key << e.value.to_data }
{ '#' => r }
end
end
end
end
require_relative 'model/pn_transformer'
require_relative 'parser/pn_parser'
|
