Module: Puppet::Pops::Patterns

Defined in:
lib/puppet/pops/patterns.rb

Overview

The Patterns module contains common regular expression patters for the Puppet DSL language

Constant Summary collapse

NUMERIC =

NUMERIC matches hex, octal, decimal, and floating point and captures several parts 0 = entire matched number, leading and trailing whitespace and sign included 1 = sign, +, - or nothing 2 = entire numeric part 3 = hexadecimal number 4 = non hex integer portion, possibly with leading 0 (octal) 5 = floating point part, starts with “.”, decimals and optional exponent

Thus, a hex number has group 3 value, an octal value has group 4 (if it starts with 0), and no group 3 and a floating point value has group 4 and group 5.

%r{\A[[:blank:]]*([-+]?)[[:blank:]]*((0[xX][0-9A-Fa-f]+)|(0?\d+)((?:\.\d+)?(?:[eE]-?\d+)?))[[:blank:]]*\z}
WS_BETWEEN_SIGN_AND_NUMBER =

Special expression that tests if there is whitespace between sign and number. The expression is used to strip such whitespace when normal Float or Integer conversion fails.

%r{\A([+-])[[:blank:]]+(.*)\z}
ILLEGAL_HOSTNAME_CHARS =

ILLEGAL_P3_1_HOSTNAME matches if a hostname contains illegal characters. This check does not prevent pathological names like 'a.…b', '.….', “—”. etc.

%r{[^-\w.]}
NAME =

NAME matches a name the same way as the lexer.

%r{\A((::)?[a-z]\w*)(::[a-z]\w*)*\z}
CLASSREF_EXT =

CLASSREF_EXT matches a class reference the same way as the lexer - i.e. the external source form where each part must start with a capital letter A-Z.

%r{\A((::){0,1}[A-Z][\w]*)+\z}
CLASSREF_EXT_DECL =

Same as CLASSREF_EXT but cannot start with '::'

%r{\A[A-Z][\w]*(?:::[A-Z][\w]*)*\z}
CLASSREF =

CLASSREF matches a class reference the way it is represented internally in the model (i.e. in lower case).

%r{\A((::){0,1}[a-z][\w]*)+\z}
CLASSREF_DECL =

Same as CLASSREF but cannot start with '::'

%r{\A[a-z][\w]*(?:::[a-z][\w]*)*\z}
DOLLAR_VAR =

DOLLAR_VAR matches a variable name including the initial $ character

%r{\$(::)?(\w+::)*\w+}
VAR_NAME =

VAR_NAME matches the name part of a variable (The $ character is not included) Note, that only the final segment may start with an underscore. Note, regexp sensitive to backtracking

%r{\A(?:::)?(?:[a-z]\w*::)*[a-z_]\w*\z}
PARAM_NAME =

PARAM_NAME matches the name part of a parameter (The $ character is not included)

%r{\A[a-z_]\w*\z}
NUMERIC_VAR_NAME =

A Numeric var name must be the decimal number 0, or a decimal number not starting with 0

%r{\A(?:0|(?:[1-9][0-9]*))\z}