Class: Antlr4::Runtime::PredictionContextCache

Inherits:
Object
  • Object
show all
Defined in:
lib/antlr4/runtime/prediction_context_cache.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ PredictionContextCache

Returns a new instance of PredictionContextCache.



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# File 'lib/antlr4/runtime/prediction_context_cache.rb', line 4

def initialize
  @cache = {}
end

Instance Method Details

#add(ctx) ⇒ Object 



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# File 'lib/antlr4/runtime/prediction_context_cache.rb', line 8

def add(ctx)
  return EmptyPredictionContext::EMPTY if ctx == EmptyPredictionContext::EMPTY

  existing = @cache[ctx]
  return existing unless existing.nil?

  @cache[ctx] = ctx
  ctx
end

#get(ctx) ⇒ Object 



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# File 'lib/antlr4/runtime/prediction_context_cache.rb', line 18

def get(ctx)
  @cache[ctx]
end

#size ⇒ Object 



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# File 'lib/antlr4/runtime/prediction_context_cache.rb', line 22

def size
  @cache.size
end