Class: Appfuel::Repository::ExprParser

Inherits:
Parslet::Parser
  • Object
show all
Defined in:
lib/appfuel/storage/repository/expr_parser.rb

Overview

A PEG (Parser Expression Grammer) parser for our domain language. This gives us the ablity to describe the filtering we would like to do when searching on a given domain entity. The search string is parsed and transformed into an interface that repositories can use to determine how to search a given storage interface. The language always represent the business domain entities and not a storage system.

Direct Known Subclasses

SearchParser

Instance Method Summary collapse

Instance Method Details

#stri(str) ⇒ Object 



179
180
181
182
183
184
 
# File 'lib/appfuel/storage/repository/expr_parser.rb', line 179

def stri(str)
  key_chars = str.split(//)
  key_chars.collect! {|char|
    match["#{char.upcase}#{char.downcase}"]
  }.reduce(:>>)
end