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Contents
# frozen_string_literal: true
module Liquid
# @liquid_public_docs
# @liquid_type tag
# @liquid_category variable
# @liquid_name assign
# @liquid_summary
# Creates a new variable.
# @liquid_description
# You can create variables of any [basic type](/docs/api/liquid/basics#types), [object](/docs/api/liquid/objects), or object property.
# @liquid_syntax
# {% assign variable_name = value %}
# @liquid_syntax_keyword variable_name The name of the variable being created.
# @liquid_syntax_keyword value The value you want to assign to the variable.
class Assign < Tag
Syntax = /(#{VariableSignature}+)\s*=\s*(.*)\s*/om
# @api private
def self.raise_syntax_error(parse_context)
raise Liquid::SyntaxError, parse_context.locale.t('errors.syntax.assign')
end
attr_reader :to, :from
def initialize(tag_name, markup, parse_context)
super
if markup =~ Syntax
@to = Regexp.last_match(1)
@from = Variable.new(Regexp.last_match(2), parse_context)
else
self.class.raise_syntax_error(parse_context)
end
end
def render_to_output_buffer(context, output)
val = @from.render(context)
context.scopes.last[@to] = val
context.resource_limits.increment_assign_score(assign_score_of(val))
output
end
def blank?
true
end
private
def assign_score_of(val)
if val.instance_of?(String)
val.bytesize
elsif val.instance_of?(Array)
sum = 1
# Uses #each to avoid extra allocations.
val.each { |child| sum += assign_score_of(child) }
sum
elsif val.instance_of?(Hash)
sum = 1
val.each do |key, entry_value|
sum += assign_score_of(key)
sum += assign_score_of(entry_value)
end
sum
else
1
end
end
class ParseTreeVisitor < Liquid::ParseTreeVisitor
def children
[@node.from]
end
end
end
end
Version data entries
14 entries across 14 versions & 1 rubygems