Module parser 

Recursive-descent parser for PDDL domain and problem files.

Consumes a token stream from the crate::lexer and produces the AST defined in crate::ast. The parser handles all PDDL features encountered in IPC benchmarks (1998–2014), including:

• Typing and type hierarchies (:types, either)
• Durative actions with temporal conditions/effects
• Numeric fluents, action costs, and metrics
• ADL quantifiers (forall, exists) and conditional effects (when)
• PDDL3 trajectory constraints and preferences
• Legacy PDDL 1.2 :vars in actions

Entry points

Function	Input	Output
parse_domain_str	raw PDDL string	Domain
parse_problem_str	raw PDDL string	Problem
parse_domain	pre-tokenized &[Token]	Domain
parse_problem	pre-tokenized &[Token]	Problem

Functions

parse_domain

Parse a pre-tokenized PDDL domain.

parse_domain_str

Tokenize and parse a PDDL domain from a raw source string.

parse_problem

Parse a pre-tokenized PDDL problem.

parse_problem_str

Tokenize and parse a PDDL problem from a raw source string.