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lib/parser-parser-part/README.md

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+# parser
+
+### Prerequisites
+
+* Rexical (rex) 
+* Racc
+
+### Available commands
+
+* `rake lexer` - generates `lexer.rb` file based on `specification.rex` file
+* `rake parser` - generates `parser.rb` file based on `grammar.y` file
+* `rake generate` - generates `lexer.rb` and `parser.rb` files
+
+### Testing
+
+To run only `lexer` tests, execute : `rspec spec/query_lexer_spec.rb`
+To run only `parser` tests, execute : `rspec spec/query_parser_spec.rb`
+
+To run all tests, execute : `rake spec`