Class: TL1::AST::CommaSeparatedKeywordVariables

Inherits:
Node
  • Object
show all
Defined in:
lib/tl1/ast.rb

Overview

A group of fields separated by commas and identified by keywords. Fields may appear in any order.

Instance Attribute Summary

Attributes inherited from Node

#fields

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Node

#<=>, #to_json

Constructor Details

#initialize(fields) ⇒ CommaSeparatedKeywordVariables

Returns a new instance of CommaSeparatedKeywordVariables.



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# File 'lib/tl1/ast.rb', line 189

def initialize(fields)
  @fields = fields
end

Class Method Details

.parse(source) ⇒ Object 



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# File 'lib/tl1/ast.rb', line 171

def self.parse(source)
  elements =
    if source.is_a?(String)
      AST.split(source, ',').map { |pair|
        key, value = pair.split('=', 2)
        [key.to_s, Variable.parse(value)]
      }.to_h
    else
      source.map { |k, v| [k.to_s, Variable.parse(v['fields'])] }.to_h
    end

  new(elements)
end

Instance Method Details

#as_json ⇒ Object 



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# File 'lib/tl1/ast.rb', line 185

def as_json
  super(fields.keys.zip(fields.values.map(&:as_json)).to_h)
end

#format(**kwargs) ⇒ Object 



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# File 'lib/tl1/ast.rb', line 193

def format(**kwargs)
  fields.each_pair.flat_map { |keyword, variable|
    if kwargs.key?(variable.fields)
      ["#{keyword}=#{kwargs[variable.fields]}"]
    else
      []
    end
  }.join(',')
end

#parse(fragment, record:) ⇒ Object 



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# File 'lib/tl1/ast.rb', line 203

def parse(fragment, record:)
  AST.split(fragment, ',').each do |pair|
    next if pair.empty?
    key, value = pair.split('=', 2)
    field_name = @fields.fetch(key)
    record[field_name.fields] = AST.remove_quotes(value)
  end

  record
end