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# frozen_string_literal: true
module Slim
# Handle logic less mode
# This filter can be activated with the option "logic_less"
# @api private
class LogicLess < Filter
# Default dictionary access order, change it with the option :dictionary_access
DEFAULT_ACCESS_ORDER = [:symbol, :string, :method, :instance_variable].freeze
define_options logic_less: true,
dictionary: 'self',
dictionary_access: DEFAULT_ACCESS_ORDER
def initialize(opts = {})
super
access = [options[:dictionary_access]].flatten.compact
access.each do |type|
raise ArgumentError, "Invalid dictionary access #{type.inspect}" unless DEFAULT_ACCESS_ORDER.include?(type)
end
raise ArgumentError, 'Option dictionary access is missing' if access.empty?
@access = access.inspect
end
def call(exp)
if options[:logic_less]
@context = unique_name
[:multi,
[:code, "#{@context} = ::Slim::LogicLess::Context.new(#{options[:dictionary]}, #{@access})"],
super]
else
exp
end
end
# Interpret control blocks as sections or inverted sections
def on_slim_control(name, content)
method =
if name =~ /\A!\s*(.*)/
name = $1
'inverted_section'
else
'section'
end
[:block, "#{@context}.#{method}(#{name.to_sym.inspect}) do", compile(content)]
end
def on_slim_output(escape, name, content)
[:slim, :output, escape, empty_exp?(content) ? access(name) :
"#{@context}.lambda(#{name.to_sym.inspect}) do", compile(content)]
end
def on_slim_attrvalue(escape, value)
[:slim, :attrvalue, escape, access(value)]
end
def on_slim_splat(code)
[:slim, :splat, access(code)]
end
def on_dynamic(code)
raise Temple::FilterError, 'Embedded code is forbidden in logic less mode'
end
def on_code(code)
raise Temple::FilterError, 'Embedded code is forbidden in logic less mode'
end
private
def access(name)
case name
when 'yield'
'yield'
when 'self'
"#{@context}.to_s"
else
"#{@context}[#{name.to_sym.inspect}]"
end
end
end
end
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