Module: Wukong::FlatPack::Language

Constant Summary collapse

SIMPLE_TYPES = language definition

%w{i f s b _}

SIMPLE_TYPE_RE =

"[#{SIMPLE_TYPES.join}]"

MODIFIERS =

%w{+ *}

MODIFIER_RE =

"[#{MODIFIERS.join}]"

SIMPLE_TOKEN_RE =

"#{SIMPLE_TYPE_RE}(?:#{MODIFIER_RE}|[0-9]+)?"

DATE_TYPES =

%w{a A b B c d H I j m M p S U w W x X Y Z}

DATE_TYPES_RE = the extra space is supposed to be there

"[#{DATE_TYPES.join} ]"

DATE_TOKEN_RE =

"%#{DATE_TYPES_RE}*%"

FIXED_POINT_TYPE =

'D'

FIXED_POINT_SEP =

'e'

FIXED_POINT_TOKEN_RE =

"#{FIXED_POINT_TYPE}\\d+(?:#{FIXED_POINT_SEP}\\d+)?"

TOKENS =

[SIMPLE_TOKEN_RE, DATE_TOKEN_RE, FIXED_POINT_TOKEN_RE]

TOKEN_RE =

"#{TOKENS.join('|')}"

CAPTURE_TOKEN_RE =

/(#{TOKENS.join('|')})/

LANGUAGE_RE =

/^(?:(#{TOKEN_RE}) *)+$/

TOTAL_SIMPLE_TYPE_RE = total regexes, i.e. regexes that must match the whole string

/^#{SIMPLE_TOKEN_RE}$/

TOTAL_FIXED_POINT_RE =

/^#{FIXED_POINT_TOKEN_RE}$/

TOTAL_DATE_RE =

/^#{DATE_TOKEN_RE}$/

NAMED_SIMPLE_TYPE_RE = named regexes used for parsing tokens

/(?<type>#{SIMPLE_TYPE_RE})(?:(?<length>[0-9]+)|(?<modifier>#{MODIFIER_RE}))?/

NAMED_FIXED_POINT_RE =

/#{FIXED_POINT_TYPE}(?<length>\d+)(?:#{FIXED_POINT_SEP}(?<power>\d+))?/

NAMED_DATE_RE =

/%(?<format>#{DATE_TYPES_RE})%/

.string_in_lang(str) ⇒ Object
Returns true if the supplied string is in Flat's formatting language, as determined by the LANGUAGE_RE regex.

Returns true if the supplied string is in Flat's formatting language, as determined by the LANGUAGE_RE regex.



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# File 'lib/wukong/model/flatpack_parser/lang.rb', line 41

def self.string_in_lang(str)
  return (not (str =~ LANGUAGE_RE).nil?)
end