Class: LiveAST::Cache

Inherits:

Object

• Object
• LiveAST::Cache

Defined in:

lib/live_ast/linker.rb

Instance Method Summary

• #fetch_ast(line) ⇒ Object
• #initialize(file, lineno) ⇒ Cache constructor

  A new instance of Cache.

Constructor Details

#initialize(file, lineno) ⇒ Cache

Returns a new instance of Cache.

# File 'lib/live_ast/linker.rb', line 5

def initialize(file, lineno)
  @source = file
  @user_line = lineno
  @asts = nil
end

Instance Method Details

#fetch_ast(line) ⇒ Object

# File 'lib/live_ast/linker.rb', line 11

def fetch_ast(line)
  @asts ||= LiveAST.parser.new.parse(@source).tap do
    @source = nil
  end
  @asts.fetch(line - @user_line + 1, nil)
end