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require 'tilt/template'
module Tilt
# Haml template implementation. See:
# http://haml.hamptoncatlin.com/
class HamlTemplate < Template
self.default_mime_type = 'text/html'
def self.engine_initialized?
defined? ::Haml::Engine
end
def initialize_engine
require_template_library 'haml'
end
def prepare
options = @options.merge(:filename => eval_file, :line => line)
@engine = ::Haml::Engine.new(data, options)
end
def evaluate(scope, locals, &block)
if @engine.respond_to?(:precompiled_method_return_value, true)
super
else
@engine.render(scope, locals, &block)
end
end
# Precompiled Haml source. Taken from the precompiled_with_ambles
# method in Haml::Precompiler:
# http://github.com/nex3/haml/blob/master/lib/haml/precompiler.rb#L111-126
def precompiled_template(locals)
@engine.precompiled
end
def precompiled_preamble(locals)
local_assigns = super
@engine.instance_eval do
<<-RUBY
begin
extend Haml::Helpers
_hamlout = @haml_buffer = Haml::Buffer.new(@haml_buffer, #{options_for_buffer.inspect})
_erbout = _hamlout.buffer
__in_erb_template = true
_haml_locals = locals
#{local_assigns}
RUBY
end
end
def precompiled_postamble(locals)
@engine.instance_eval do
<<-RUBY
#{precompiled_method_return_value}
ensure
@haml_buffer = @haml_buffer.upper
end
RUBY
end
end
end
end
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