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Class: Sinatra::TemplateCache

Relationships & Source Files
Inherits: Object
Defined in: lib/sinatra/base.rb

Overview

Extremely simple template cache implementation.

  • Not thread-safe.
  • Size is unbounded.
  • Keys are not copied defensively, and should not be modified after being passed to #fetch. More specifically, the values returned by key#hash and key#eql? should not change.

Implementation copied from Tilt::Cache.

Class Method Summary

Instance Method Summary

  • #clear

    Clears the cache.

  • #fetch(*key)

    Caches a value for key, or returns the previously cached value.

Constructor Details

.new ⇒ TemplateCache

[ GitHub ] 

  


# File 'lib/sinatra/base.rb', line 949



def initialize
  @cache = {}
end


  







Instance Method Details



  

    #clear  
  



  

    
Clears the cache.


  



  [ GitHub ]


  

  


# File 'lib/sinatra/base.rb', line 964



def clear
  @cache = {}
end


  








  

    #fetch(*key)  
  



  

    
Caches a value for key, or returns the previously cached value.
If a value has been previously cached for key then it is
returned. Otherwise, block is yielded to and its return value
which may be nil, is cached under key and returned.


  



  [ GitHub ]


  

  


# File 'lib/sinatra/base.rb', line 957



def fetch(*key)
  @cache.fetch(key) do
    @cache[key] = yield
  end
end