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# frozen_string_literal: true
module XPath
module DSL
def current
Expression.new(:this_node)
end
def descendant(*expressions)
Expression.new(:descendant, current, expressions)
end
def child(*expressions)
Expression.new(:child, current, expressions)
end
def axis(name, *element_names)
Expression.new(:axis, current, name, element_names)
end
def anywhere(*expressions)
Expression.new(:anywhere, expressions)
end
def attr(expression)
Expression.new(:attribute, current, expression)
end
def text
Expression.new(:text, current)
end
def css(selector)
Expression.new(:css, current, Literal.new(selector))
end
def function(name, *arguments)
Expression.new(:function, name, *arguments)
end
def method(name, *arguments)
Expression.new(:function, name, current, *arguments)
end
def where(expression)
if expression
Expression.new(:where, current, expression)
else
current
end
end
alias_method :[], :where
def is(expression)
Expression.new(:is, current, expression)
end
def binary_operator(name, rhs)
Expression.new(:binary_operator, name, current, rhs)
end
def union(*expressions)
Union.new(*[self, expressions].flatten)
end
alias_method :+, :union
def last
function(:last)
end
def position
function(:position)
end
METHODS = [
# node set
:count, :id, :local_name, :namespace_uri,
# string
:string, :concat, :starts_with, :contains, :substring_before,
:substring_after, :substring, :string_length, :normalize_space,
:translate,
# boolean
:boolean, :not, :true, :false, :lang,
# number
:number, :sum, :floor, :ceiling, :round
].freeze
METHODS.each do |key|
name = key.to_s.tr('_', '-').to_sym
define_method key do |*args|
method(name, *args)
end
end
def qname
method(:name)
end
alias_method :inverse, :not
alias_method :~, :not
alias_method :!, :not
alias_method :normalize, :normalize_space
alias_method :n, :normalize_space
OPERATORS = [
%i[equals = ==],
%i[or or |],
%i[and and &],
%i[not_equals != !=],
%i[lte <= <=],
%i[lt < <],
%i[gte >= >=],
%i[gt > >],
%i[plus +],
%i[minus -],
%i[multiply * *],
%i[divide div /],
%i[mod mod %]
].freeze
OPERATORS.each do |(name, operator, alias_name)|
define_method name do |rhs|
binary_operator(operator, rhs)
end
alias_method alias_name, name if alias_name
end
AXES = %i[
ancestor ancestor_or_self attribute descendant_or_self
following following_sibling namespace parent preceding
preceding_sibling self
].freeze
AXES.each do |key|
name = key.to_s.tr('_', '-').to_sym
define_method key do |*element_names|
axis(name, *element_names)
end
end
alias_method :self_axis, :self
def ends_with(suffix)
function(:substring, current, function(:'string-length', current).minus(function(:'string-length', suffix)).plus(1)) == suffix
end
def contains_word(word)
function(:concat, ' ', current.normalize_space, ' ').contains(" #{word} ")
end
UPPERCASE_LETTERS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞŸŽŠŒ'
LOWERCASE_LETTERS = 'abcdefghijklmnopqrstuvwxyzàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿžšœ'
def lowercase
method(:translate, UPPERCASE_LETTERS, LOWERCASE_LETTERS)
end
def uppercase
method(:translate, LOWERCASE_LETTERS, UPPERCASE_LETTERS)
end
def one_of(*expressions)
expressions.map { |e| current.equals(e) }.reduce(:or)
end
def next_sibling(*expressions)
axis(:"following-sibling")[1].axis(:self, *expressions)
end
def previous_sibling(*expressions)
axis(:"preceding-sibling")[1].axis(:self, *expressions)
end
end
end
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