Akar Parser

Cypher query parser using pest.rs PEG grammar.

Supported syntax:

• CREATE NODE TABLE / CREATE REL TABLE / DROP TABLE
• COPY FROM with options (header, delimiter, quote, escape)
• MATCH / OPTIONAL MATCH with node and edge patterns
• WHERE / HAVING with boolean expressions
• RETURN / WITH with expressions, aliases, ordering
• ORDER BY / LIMIT / OFFSET / SKIP
• DELETE / SET
• ALTER TABLE (ADD/DROP/RENAME COLUMN, RENAME TABLE)
• UNION ALL
• UNWIND expression AS variable
• CREATE (node patterns with properties)
• Full operator precedence (OR, AND, NOT, comparison, arithmetic, unary)
• Literals: strings, integers, floats, booleans, null, lists, maps, parameters
• Function calls with arguments
• Property access (a.name)

AST types: 33 Statement variants, 10 Clause variants, Expression enum with 10 variants, Constant with 7 variants.

Tests: 67