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# encoding: utf-8
# This is so that templates compiled in this file are UTF-8
require 'set'
require "action_view/template/resolver"
module ActionView
class Template
extend TemplateHandlers
attr_reader :source, :identifier, :handler, :mime_type, :formats, :details
def initialize(source, identifier, handler, details)
@source = source
@identifier = identifier
@handler = handler
@details = details
@method_names = {}
format = details.delete(:format) || begin
# TODO: Clean this up
handler.respond_to?(:default_format) ? handler.default_format.to_sym.to_s : "html"
end
@mime_type = Mime::Type.lookup_by_extension(format.to_s)
@formats = [format.to_sym]
@formats << :html if format == :js
@details[:formats] = Array.wrap(format.to_sym)
end
def render(view, locals, &block)
method_name = compile(locals, view)
view.send(method_name, locals, &block)
rescue Exception => e
if e.is_a?(TemplateError)
e.sub_template_of(self)
raise e
else
raise TemplateError.new(self, view.assigns, e)
end
end
# TODO: Figure out how to abstract this
def variable_name
@variable_name ||= identifier[%r'_?(\w+)(\.\w+)*$', 1].to_sym
end
# TODO: Figure out how to abstract this
def counter_name
@counter_name ||= "#{variable_name}_counter".to_sym
end
# TODO: kill hax
def partial?
@details[:partial]
end
private
def compile(locals, view)
method_name = build_method_name(locals)
return method_name if view.respond_to?(method_name)
locals_code = locals.keys.map! { |key| "#{key} = local_assigns[:#{key}];" }.join
code = @handler.call(self)
if code.sub!(/\A(#.*coding.*)\n/, '')
encoding_comment = $1
elsif defined?(Encoding) && Encoding.respond_to?(:default_external)
encoding_comment = "#coding:#{Encoding.default_external}"
end
source = <<-end_src
def #{method_name}(local_assigns)
old_output_buffer = output_buffer;#{locals_code};#{code}
ensure
self.output_buffer = old_output_buffer
end
end_src
if encoding_comment
source = "#{encoding_comment}\n#{source}"
line = -1
else
line = 0
end
begin
ActionView::CompiledTemplates.module_eval(source, identifier, line)
method_name
rescue Exception => e # errors from template code
if logger = (view && view.logger)
logger.debug "ERROR: compiling #{method_name} RAISED #{e}"
logger.debug "Function body: #{source}"
logger.debug "Backtrace: #{e.backtrace.join("\n")}"
end
raise ActionView::TemplateError.new(self, {}, e)
end
end
class LocalsKey
@hash_keys = Hash.new {|h,k| h[k] = Hash.new {|h,k| h[k] = {} } }
def self.get(*locals)
@hash_keys[*locals] ||= new(klass, format, locale)
end
attr_accessor :hash
def initialize(klass, format, locale)
@hash = locals.hash
end
alias_method :eql?, :equal?
end
def build_method_name(locals)
# TODO: is locals.keys.hash reliably the same?
@method_names[locals.keys.hash] ||=
"_render_template_#{@identifier.hash}_#{__id__}_#{locals.keys.hash}".gsub('-', "_")
end
end
end
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