Class: AsciiChem::Grammar

Inherits:

Parslet::Parser

• Object
• Parslet::Parser
• AsciiChem::Grammar

Defined in:

lib/asciichem/grammar.rb

Overview

Parslet grammar for AsciiChem v1.

Design notes:

• Leaf rules return strings; .as(:name) is applied at the combination site so the parse tree is a flat hash of named strings wherever practical.
• The prefix-isotope binding (^14C) is enforced structurally: the prefixed_atom production consumes ^digits element as a unit. A bare ^digits without an element is rejected.
• Marker rules (subscript_marker, superscript_marker) capture ONLY the value, not the leading _ or ^. The literal prefix is consumed by the rule but not included in the named capture.