Generating ruby parser in bel.rb

WARNING: Obsolete

The generation of a full Ruby parser for BEL Script is obsolete for bel versions greater than or equal to 1.0.0. It is supplanted by the BEL expression and script parsers available in bel_parser.

Related issues: #128 #129.

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Generating BEL Script parser from Ragel

The ragel definitions in lib/bel/ragel/ are compiled into a Ruby finite-state machine for parsing full BEL Script. The ragel compilation utilizes the -T1 (e.g. faster table driven FSM) compilation switch.

Requirements:

• Ragel, version 6.9

Steps to regenerate:

# From root of bel.rb project.

# Generates a Ruby FSM at lib/bel/ragel/bel.rb.
ragel -T1 -L -R lib/bel/ragel/bel.rl

# Move generated FSM to library location.
mv lib/bel/ragel/bel.rb lib/bel/script.rb