Sha256: 14291fc6689334cddd31c6da41e42af194352df873409277220a2a774d650ba4
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Versions: 5
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Stored size: 1.71 KB
Contents
# frozen_string_literal: true
class Serega
module SeregaPlugins
module StringModifiers
class ParseStringModifiers
COMMA = ","
OPEN_BRACKET = "("
CLOSE_BRACKET = ")"
def self.call(fields)
return fields unless fields.is_a?(String)
new.parse(fields)
end
# user => { user: {} }
# user(id) => { user: { id: {} } }
# user(id,name) => { user: { id: {}, name: {} } }
# user,comments => { user: {}, comments: {} }
# user(comments(text)) => { user: { comments: { text: {} } } }
def parse(fields)
res = {}
attribute = +""
path_stack = nil
fields.each_char do |char|
case char
when COMMA
add_attribute(res, path_stack, attribute, FROZEN_EMPTY_HASH)
when CLOSE_BRACKET
add_attribute(res, path_stack, attribute, FROZEN_EMPTY_HASH)
path_stack&.pop
when OPEN_BRACKET
name = add_attribute(res, path_stack, attribute, {})
(path_stack ||= []).push(name) if name
else
attribute.insert(-1, char)
end
end
add_attribute(res, path_stack, attribute, FROZEN_EMPTY_HASH)
res
end
private
def add_attribute(res, path_stack, attribute, nested_attributes = FROZEN_EMPTY_HASH)
attribute.strip!
return if attribute.empty?
name = attribute.to_sym
attribute.clear
current_attrs = (!path_stack || path_stack.empty?) ? res : res.dig(*path_stack)
current_attrs[name] = nested_attributes
name
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems