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rails--rails/actionview/lib/action_view.rb

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# frozen_string_literal: true
#--
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# Copyright (c) 2004-2019 David Heinemeier Hansson
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++
require "active_support"
require "active_support/rails"
require "action_view/version"
module ActionView
extend ActiveSupport::Autoload
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ENCODING_FLAG = '#.*coding[:=]\s*(\S+)[ \t]*'
eager_autoload do
autoload :Base
autoload :Context
autoload :Digestor
autoload :Helpers
autoload :LookupContext
autoload :Layouts
autoload :PathSet
autoload :RecordIdentifier
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autoload :Rendering
autoload :RoutingUrlFor
autoload :Template
Introduce a file type template, deprecate `Template#refresh` Every template that specifies a "virtual path" loses the template source when the template gets compiled: https://github.com/rails/rails/blob/eda0f574f129fcd5ad1fc58b55cb6d1db71ea95c/actionview/lib/action_view/template.rb#L275 The "refresh" method seems to think that the source code for a template can be recovered if there is a virtual path: https://github.com/rails/rails/blob/eda0f574f129fcd5ad1fc58b55cb6d1db71ea95c/actionview/lib/action_view/template.rb#L171-L188 Every call site that allocates a template object *and* provides a "virtual path" reads the template contents from the filesystem: https://github.com/rails/rails/blob/eda0f574f129fcd5ad1fc58b55cb6d1db71ea95c/actionview/lib/action_view/template/resolver.rb#L229-L231 Templates that are inline or literals don't provide a "virtual path": https://github.com/rails/rails/blob/eda0f574f129fcd5ad1fc58b55cb6d1db71ea95c/actionview/lib/action_view/renderer/template_renderer.rb#L34 This commit introduces a `FileTemplate` type that subclasses `Template`. The `FileTemplate` keeps a reference to the filename, and reads the source from the filesystem. This effectively makes the template source immutable. Other classes depended on the source to be mutated while being compiled, so this commit also introduces a temporary way to pass the mutated source to the ERB (or whatever) compiler. See `LegacyTemplate`. I think we should consider it an error to provide a virtual path on a non file type template an non-file templates can't recover their source. Here is an example: https://github.com/rails/rails/blob/eda0f574f129fcd5ad1fc58b55cb6d1db71ea95c/actionview/lib/action_view/testing/resolvers.rb#L53 This provides a "virtual path" so the source code (a string literal) is thrown away after compilation. Clearly we can't recover that string, so I think this should be an error.
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autoload :FileTemplate
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autoload :ViewPaths
autoload_under "renderer" do
autoload :Renderer
autoload :AbstractRenderer
autoload :PartialRenderer
autoload :TemplateRenderer
autoload :StreamingTemplateRenderer
end
autoload_at "action_view/template/resolver" do
autoload :Resolver
autoload :PathResolver
autoload :OptimizedFileSystemResolver
autoload :FallbackFileSystemResolver
end
autoload_at "action_view/buffers" do
autoload :OutputBuffer
autoload :StreamingBuffer
end
autoload_at "action_view/flows" do
autoload :OutputFlow
autoload :StreamingFlow
end
autoload_at "action_view/template/error" do
autoload :MissingTemplate
autoload :ActionViewError
autoload :EncodingError
autoload :TemplateError
autoload :WrongEncodingError
end
end
autoload :TestCase
def self.eager_load!
super
ActionView::Helpers.eager_load!
ActionView::Template.eager_load!
end
end
require "active_support/core_ext/string/output_safety"
ActiveSupport.on_load(:i18n) do
I18n.load_path << File.expand_path("action_view/locale/en.yml", __dir__)
end