Henrik Lindberg hlindberg

## puppet.ebnf
# Puppet EBNF (kind of)
# Try with: http://www.bottlecaps.de/rr/ui

ACTOR              ::= 'actor' ( '(' PARAMS ')')? ('inherits' NAME)?
                               '{'
                                (QUEUE | INBOX | ACTION | SEQUENCE | PARALLEL | FUNCTION | STATE | CONSTANT | LOCAL_TYPE)*
                               '}'

SEQUENCE      ::= 'sequence' '{' (ACTION | SEQUENCE | PARALLEL)* '}'
PARALLEL        ::= 'parallel' '{' (ACTION | SEQUENCE | PARALLEL)* '}'

## gist:e033ab9c8e20282cc494db6f04afc308
# The latch function remembers what it was called with
# and returns what it was previously called with.
#
# This is using global namespace - in your code use a module namespace
#
Puppet::Functions.create_function(:latch) do
  dispatch :example do
    repeated_param 'Any', :arg
  end

## sorthash.pp
# When you need to process a hash with keys in sorted order
# you may have found the `sort()` function - but it only
# operates on an Array.
#
# Most of the time what is wanted is simply achieved
# by taking the keys of a hash and sorting those and
# then iterating over the keys.
#
# When, however the wanted result is a new Hash
# with all keys sorted recursively then this becomes

## example.pp
$h = { 'b' => ['banana', 'bandana'], 'o' => ['orange', 'ovaltine'] }
$h2 = $h.map |$k, $v | { [$k,$v[0]] }
notice "h2 = ${h2}"
notice Hash($h2)

## puppet_grammar.xhtml
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
   <head>
      <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
      <meta name="generator" content="Railroad Diagram Generator 1.52.1729" />
      <style type="text/css">
    ::-moz-selection
    {
      color: #FFFEF8;
      background: #1E1800;
    }

## any2bool.rb
Puppet::Functions.create_function(:any2bool) do
  dispatch :any2bool do
    param 'Any', :to_be_converted
  end

  def any2bool(to_be_converted)
    call_function('new', Puppet::Pops::Types::PBooleanType::DEFAULT, to_be_converted)
  end
end

## functional_puppet.pp
# Resolves a given value - if given a Deferred it will be called and all other values are returned as is.
#
function resolve(Any $x) {
  if $x =~ Deferred { $x.call } else { $x }
}

# Resolves and evaluates a condition and either resolves and evaluates the given when_true,
# or the given when_false depending on the outcome of the evaluation of the condition.
# The result is undef if the selected when_true/when_false is undefined.
#

## sample_mocking_spec.rb
require 'spec_helper'

# Example rspec_puppet function rspec test (i.e. subject is the function 'min')
# This works for other rspec subjects as well as a compiler is always involved.
# This kind of mocking can be required when it is not enough to simply override
# a function with another implementation (which can be done with a `let(:pre_condition) { 'function min($x, $y) { ... }'}`
#
# The main difficulty that this overcomes is the need to let the compiler initialize and
# create the context in which it will operate before making any mocks.
#

## comma_separated_list.java
StringJoiner joiner = new StringJoiner(",");
for (Item item : list) {
    joiner.add(item.toString());
}
return joiner.toString();

## output.md

      
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                hlindberg
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expression type
example output


literal undef
nil


literal default
"default"


literal integer
1


literal float
3.14


literal false
false


literal true
true


literal string
"hello"


literal regexp
"/this|that.*/"
	# Puppet EBNF (kind of)
	# Try with: http://www.bottlecaps.de/rr/ui

	ACTOR ::= 'actor' ( '(' PARAMS ')')? ('inherits' NAME)?
	'{'
	(QUEUE \| INBOX \| ACTION \| SEQUENCE \| PARALLEL \| FUNCTION \| STATE \| CONSTANT \| LOCAL_TYPE)*
	'}'

	SEQUENCE ::= 'sequence' '{' (ACTION \| SEQUENCE \| PARALLEL)* '}'
	PARALLEL ::= 'parallel' '{' (ACTION \| SEQUENCE \| PARALLEL)* '}'
	# The latch function remembers what it was called with
	# and returns what it was previously called with.
	#
	# This is using global namespace - in your code use a module namespace
	#
	Puppet::Functions.create_function(:latch) do
	dispatch :example do
	repeated_param 'Any', :arg
	end
	# When you need to process a hash with keys in sorted order
	# you may have found the `sort()` function - but it only
	# operates on an Array.
	#
	# Most of the time what is wanted is simply achieved
	# by taking the keys of a hash and sorting those and
	# then iterating over the keys.
	#
	# When, however the wanted result is a new Hash
	# with all keys sorted recursively then this becomes
	$h = { 'b' => ['banana', 'bandana'], 'o' => ['orange', 'ovaltine'] }
	$h2 = $h.map \|$k, $v \| { [$k,$v[0]] }
	notice "h2 = ${h2}"
	notice Hash($h2)
	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml">
	<head>
	<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
	<meta name="generator" content="Railroad Diagram Generator 1.52.1729" />
	<style type="text/css">
	::-moz-selection
	{
	color: #FFFEF8;
	background: #1E1800;
	}
	Puppet::Functions.create_function(:any2bool) do
	dispatch :any2bool do
	param 'Any', :to_be_converted
	end

	def any2bool(to_be_converted)
	call_function('new', Puppet::Pops::Types::PBooleanType::DEFAULT, to_be_converted)
	end
	end
	# Resolves a given value - if given a Deferred it will be called and all other values are returned as is.
	#
	function resolve(Any $x) {
	if $x =~ Deferred { $x.call } else { $x }
	}

	# Resolves and evaluates a condition and either resolves and evaluates the given when_true,
	# or the given when_false depending on the outcome of the evaluation of the condition.
	# The result is undef if the selected when_true/when_false is undefined.
	#
	require 'spec_helper'

	# Example rspec_puppet function rspec test (i.e. subject is the function 'min')
	# This works for other rspec subjects as well as a compiler is always involved.
	# This kind of mocking can be required when it is not enough to simply override
	# a function with another implementation (which can be done with a `let(:pre_condition) { 'function min($x, $y) { ... }'}`
	#
	# The main difficulty that this overcomes is the need to let the compiler initialize and
	# create the context in which it will operate before making any mocks.
	#
	StringJoiner joiner = new StringJoiner(",");
	for (Item item : list) {
	joiner.add(item.toString());
	}
	return joiner.toString();
expression type	example output
literal undef	nil
literal default	"default"
literal integer	1
literal float	3.14
literal false	false
literal true	true
literal string	"hello"
literal regexp	"/this\|that.*/"