Sha256: ac87723182062bca4846447f0f0b030bd639a6d8e0db04c43e2f1e1a39a6b618
Contents?: true
Size: 1.1 KB
Versions: 23
Compression:
Stored size: 1.1 KB
Contents
module Regexp::Expression
# A sequence of expressions. Differs from a Subexpressions by how it handles
# quantifiers, as it applies them to its last element instead of itself as
# a whole subexpression.
#
# Used as the base class for the Alternation alternatives and Conditional
# branches.
class Sequence < Regexp::Expression::Subexpression
def initialize(level, set_level, conditional_level)
super Regexp::Token.new(
:expression,
:sequence,
'',
nil, # ts
nil, # te
level,
set_level,
conditional_level
)
end
def text
to_s
end
def starts_at
@expressions.first.starts_at
end
def quantify(token, text, min = nil, max = nil, mode = :greedy)
offset = -1
target = expressions[offset]
while target and target.is_a?(FreeSpace)
target = expressions[offset -= 1]
end
raise ArgumentError.new("No valid target found for '#{text}' " +
"quantifier") unless target
target.quantify(token, text, min, max, mode)
end
end
end
Version data entries
23 entries across 23 versions & 1 rubygems