Module: Bskyrb::LexiconParser

Defined in:
lib/bskyrb/codegen.rb

Constant Summary collapse

@@active_namespace = 
""

Class Method Summary collapse

Class Method Details

.basic_class_definitions(classes_hash) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 124

def self.basic_class_definitions(classes_hash)
  classes_hash.map do |klass_str, properties|
    ERB.new(basic_template).result_with_hash({klass_str: klass_str, properties: properties})
  end
end

.basic_template ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 103

def self.basic_template
  %(
module <%= klass_str.split("::").first %>
class <%= klass_str.split("::").last %>
  <% properties.each do |key, value| %>
  attr_accessor :<%= key %>
  <% end %>

  def self.from_hash(hash)
# httparty-returned string-keyed hash
instance = new
<% properties.each do |key, value| %>
instance.send("<%= key %>=", hash["<%= key %>"])
<% end %>
instance
  end
end
end
)
end

.build_class_hash_from_schema(json_schema, output = {}) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 74

def self.build_class_hash_from_schema(json_schema, output = {})
  return if json_schema.nil?
  return if json_schema.has_key? "main"
  to_process = json_schema["properties"] || json_schema
  to_process.each_pair do |key, value|
    if key == "type" || !value.is_a?(Hash) # || value["type"] == "query" || key == "main"
      next
    end

    output[key] = if value["type"] == "object"
      build_class_hash_from_schema(value, {})
    elsif value["type"] == "array"
      [build_class_hash_from_schema(value, {}).values.first]
    elsif value["type"] == "ref"
      ref_to_class_str(value["ref"])
    else
      -1
    end
  end
  output
end

.build_classes_hash_from_lexicon_defs(lexicon_file) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 27

def self.build_classes_hash_from_lexicon_defs(lexicon_file)
  parsed = File.open(lexicon_file) { |f| JSON.parse(f.read) }
  output = {}
  # return if def_is_query(parsed) || def_is_procedure(parsed) || def_is_subscription(parsed)
  parsed["defs"].each do |k, v| # map {|v| build_class_hash_from_schema(v)}
    next if v["type"] == "main" # skip queries, procedures, etc.
    @@active_namespace = parsed["id"].split(".").map(&:capitalize).join("")
    next if k == "main"
    output[ref_to_class_str(k)] = if v["type"] == "record"
      build_class_hash_from_schema(v["record"]["properties"])
    else
      build_class_hash_from_schema(v)
    end
  end
  output
end

.build_queries_and_procedures_from_lexicon(lexicon_file) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 44

def self.build_queries_and_procedures_from_lexicon(lexicon_file)
  parsed = File.open(lexicon_file) { |f| JSON.parse(f.read) }
  output = {}
  return unless def_is_query(parsed) || def_is_procedure(parsed)
  parsed["defs"].each do |k, v| # map {|v| build_class_hash_from_schema(v)}
    next if k != "main" || v["type"] == "record" # skip basic defs
    next if v["type"] == "subscription" # some day
    @@active_namespace = parsed["id"].split(".").map(&:capitalize).join("")
    class_name = ref_to_class_str(parsed["id"].split(".").last)
    built_def = {}
    output[class_name] = {}
    if v["type"] == "query"
      built_def["input"] = build_class_hash_from_schema(v["parameters"])
      if v["output"] && v["output"]["schema"]
        built_def["output"] = build_class_hash_from_schema(v["output"]["schema"])
      end
    end
    if v["type"] == "procedure"
      if v["input"]
        built_def["input"] = build_class_hash_from_schema(v["input"]["schema"])
      end
      if v["output"] && v["output"]["schema"]
        built_def["output"] = build_class_hash_from_schema(v["output"]["schema"])
      end
    end
    output[class_name] = built_def unless built_def.empty?
  end
  output
end

.def_is_procedure(defn) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 21

def self.def_is_procedure(defn)
  defn["defs"].has_key?("main") &&
    defn["defs"]["main"].has_key?("type") &&
    defn["defs"]["main"]["type"] == "procedure"
end

.def_is_query(defn) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 9

def self.def_is_query(defn)
  defn["defs"].has_key?("main") &&
    defn["defs"]["main"].has_key?("type") &&
    defn["defs"]["main"]["type"] == "query"
end

.def_is_subscription(defn) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 15

def self.def_is_subscription(defn)
  defn["defs"].has_key?("main") &&
    defn["defs"]["main"].has_key?("type") &&
    defn["defs"]["main"]["type"] == "subscription"
end

.input_output_class_definitions(classes_hash) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 164

def self.input_output_class_definitions(classes_hash)
  classes_hash.map do |klass_str, properties|
    ERB.new(input_output_template).result_with_hash({klass_str: klass_str, properties: properties})
  end
end

.input_output_template ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 130

def self.input_output_template
  %(
module <%= klass_str.split("::").first %>
  module <%= klass_str.split("::").last %>
<% ["input", "output"].each do |top_level_key| %>
<% next unless properties.has_key?(top_level_key) && !properties[top_level_key].nil? %>
class <%= top_level_key.capitalize %>
  <% properties[top_level_key].each do |key, value| %>
  attr_accessor :<%= key %>
  <% end %>

  def self.from_hash(hash)
    # httparty-returned string-keyed hash
    instance = new
      <% properties[top_level_key].each do |key, value| %>
    instance.send("<%= key %>=", hash["<%= key %>"])
      <% end %>
    instance
  end

  def to_h
    {
      <% properties[top_level_key].each do |key, value| %>
        "<%= key %>" => <%= key %>,
      <% end %>
    }
  end
end
<% end %>
  end
end
)
end

.ref_to_class_str(ref, ns = @@active_namespace) ⇒ Object 



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# File 'lib/bskyrb/codegen.rb', line 96

def self.ref_to_class_str(ref, ns = @@active_namespace)
  klass_str_lower = ref.split("#")[-1]
  klass_str = klass_str_lower[0].capitalize + klass_str_lower.slice(1..)
  ns += "::" if ns
  "#{ns}#{klass_str}"
end