Module cypher 

openCypher subset: lexer, AST, recursive-descent parser. The compiler that lowers AST onto graph operators lives in a separate slice; this module is the front-end only.

Re-exports

pub use ast::BinaryOp;

pub use ast::CaseExpr;

pub use ast::CreateClause;

pub use ast::CypherClause;

pub use ast::CypherExpr;

pub use ast::CypherQuery;

pub use ast::DeleteClause;

pub use ast::FunctionCall;

pub use ast::InList;

pub use ast::IsNotNull;

pub use ast::IsNull;

pub use ast::ListComprehension;

pub use ast::ListIndex;

pub use ast::ListLiteral;

pub use ast::ListSlice;

pub use ast::Literal;

pub use ast::MapLiteral;

pub use ast::MatchClause;

pub use ast::MergeClause;

pub use ast::NodePattern;

pub use ast::OrderByItem;

pub use ast::Parameter;

pub use ast::PathElement;

pub use ast::PathPattern;

pub use ast::PropertyAccess;

pub use ast::RelDirection;

pub use ast::RelPattern;

pub use ast::ReturnClause;

pub use ast::ReturnItem;

pub use ast::SetClause;

pub use ast::SetItem;

pub use ast::SetOperator;

pub use ast::UnaryOp;

pub use ast::UnwindClause;

pub use ast::Variable;

pub use ast::WithClause;

pub use executor::Binding;

pub use executor::BindingRow;

pub use executor::CypherError;

pub use executor::CypherExecutor;

pub use executor::ResultRow;

pub use lexer::tokenize;

pub use lexer::LexError;

pub use lexer::Token;

pub use lexer::TokenKind;

pub use parser::parse_cypher;

pub use parser::ParseError;

pub use writer::CypherWriter;

Modules

ast

Cypher AST. Mirrors the openCypher subset implemented by the UQA Cypher subset: MATCH, OPTIONAL MATCH, CREATE, MERGE, SET, DELETE, DETACH DELETE, RETURN, WITH, WHERE, ORDER BY, SKIP, LIMIT, UNWIND.

executor

Read-only Cypher executor: walks a CypherQuery AST and lowers it onto graph operators against a GraphStore.

lexer

Cypher tokenizer. Produces a flat Token vector consumed by the recursive-descent parser. Keywords are case-insensitive — they arrive as Identifier tokens whose uppercased text the parser matches against keyword strings.

parser

Recursive-descent parser for the supported openCypher grammar.

writer

Mutating Cypher executor: extends the read-only CypherExecutor pipeline with CREATE, SET, MERGE, DELETE / DETACH DELETE, and UNWIND clauses. Reads delegate to a transient CypherExecutor view that borrows the store immutably.