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Contents
module Liquid
class Case < Block
Syntax = /(#{QuotedFragment})/o
WhenSyntax = /(#{QuotedFragment})(?:(?:\s+or\s+|\s*\,\s*)(#{QuotedFragment}.*))?/om
def initialize(tag_name, markup, options)
super
@blocks = []
if markup =~ Syntax
@left = $1
else
raise SyntaxError.new(options[:locale].t("errors.syntax.case".freeze))
end
end
def nodelist
@blocks.flat_map(&:attachment)
end
def unknown_tag(tag, markup, tokens)
@nodelist = []
case tag
when 'when'.freeze
record_when_condition(markup)
when 'else'.freeze
record_else_condition(markup)
else
super
end
end
def render(context)
context.stack do
execute_else_block = true
output = ''
@blocks.each do |block|
if block.else?
return render_all(block.attachment, context) if execute_else_block
elsif block.evaluate(context)
execute_else_block = false
output << render_all(block.attachment, context)
end
end
output
end
end
private
def record_when_condition(markup)
while markup
# Create a new nodelist and assign it to the new block
if not markup =~ WhenSyntax
raise SyntaxError.new(options[:locale].t("errors.syntax.case_invalid_when".freeze))
end
markup = $2
block = Condition.new(@left, '=='.freeze, $1)
block.attach(@nodelist)
@blocks.push(block)
end
end
def record_else_condition(markup)
if not markup.strip.empty?
raise SyntaxError.new(options[:locale].t("errors.syntax.case_invalid_else".freeze))
end
block = ElseCondition.new
block.attach(@nodelist)
@blocks << block
end
end
Template.register_tag('case'.freeze, Case)
end
Version data entries
7 entries across 7 versions & 1 rubygems