Class: Fbe::Conclude

Inherits:
Object
  • Object
show all
Defined in:
lib/fbe/conclude.rb

Overview

A concluding block.

You may want to use this class when you want to go through a number of facts in the factbase, applying certain algorithm to each of them and possibly creating new facts from them.

For example, you want to make a new good fact for every bad fact found:

require 'fbe/conclude'
conclude do
  on '(exist bad)'
  follow 'when'
  draw on |n, b|
    n.good = 'yes!'
  end
end

This snippet will find all facts that have bad property and then create new facts, letting the block in the #draw deal with them.

Author

Yegor Bugayenko (yegor256@gmail.com)

Copyright

Copyright © 2024 Zerocracy

License

MIT

Instance Method Summary collapse

Constructor Details

#initialize(fb:, judge:, global:, options:, loog:) ⇒ Conclude

Ctor.

Parameters:

  • fb (Factbase) —

    The factbase

  • judge (String) —

    The name of the judge, from the judges tool

  • global (Hash) —

    The hash for global caching

  • options (Judges::Options) —

    The options coming from the judges tool

  • loog (Loog) —

    The logging facility



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# File 'lib/fbe/conclude.rb', line 74

def initialize(fb:, judge:, global:, options:, loog:)
  @fb = fb
  @judge = judge
  @loog = loog
  @options = options
  @global = global
  @query = nil
  @follows = []
  @quota_aware = false
end

Instance Method Details

#consider {|Factbase::Fact| ... } ⇒ Integer

Take every fact, allowing the given block to process it.

For example, you want to add when property to every fact:

require 'fbe/conclude'
conclude do
  on '(always)'
  consider on |f|
    f.when = Time.new
  end
end

Yields:

  • (Factbase::Fact) —

    The next fact found by the query

Returns:

  • (Integer) —

    The count of the facts processed



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# File 'lib/fbe/conclude.rb', line 153

def consider(&)
  roll do |_fbt, a|
    yield a
    nil
  end
end

#draw {|Array<Factbase::Fact,Factbase::Fact>| ... } ⇒ Integer

Create new fact from every fact found by the query.

For example, you want to conclude a reward from every win fact:

require 'fbe/conclude'
conclude do
  on '(exist win)'
  follow 'win when'
  draw on |n, w|
    n.reward = 10
  end
end

This snippet will find all facts that have win property and will create new facts for all of them, passing them one by one in to the block of the draw, where n would be the new created fact and the w would be the fact found.

Yields:

  • (Array<Factbase::Fact,Factbase::Fact>) —

    New fact and seen fact

Returns:

  • (Integer) —

    The count of the facts processed



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# File 'lib/fbe/conclude.rb', line 131

def draw(&)
  roll do |fbt, a|
    n = fbt.insert
    fill(n, a, &)
    n
  end
end

#follow(props) ⇒ nil

Set the list of properties to copy from the facts found to new facts.

Parameters:

  • props (Arra<String>) —

    List of property names

Returns:

  • (nil) —

    Nothing



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# File 'lib/fbe/conclude.rb', line 107

def follow(props)
  @follows = props.strip.split.compact
end

#on(query) ⇒ nil

Set the query that should find the facts in the factbase.

Parameters:

  • query (String) —

    The query

Returns:

  • (nil) —

    Nothing



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# File 'lib/fbe/conclude.rb', line 98

def on(query)
  raise 'Query is already set' unless @query.nil?
  @query = query
end

#quota_aware ⇒ nil

Make this block aware of GitHub API quota.

When the quota is reached, the loop will gracefully stop.

Returns:

  • (nil) —

    Nothing



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# File 'lib/fbe/conclude.rb', line 90

def quota_aware
  @quota_aware = true
end