Module ast 

Structs

ASTNode

AST node. Grammar rules have children, tokens do not.

AnyMap

Standard “AnyMap” for putting whatever you want in it.

PrdError

Parser error state.

PrdGlobal

Exposable parts of current parser state.

Enums

GuardResult

Result of a Guard checking if a given alternation should be taken or not.

Functions

ast_to_shape_string

For testing only: convert the AST’s shape to a string.

parse

Worklist implementation: Parse the given token stream (produced by bnf::tokenize) into an AST, using the given bnf::Grammar, and taking the given root rule name as the starting point.

parse_recursive

Recursive implementation: Parse the given token stream (produced by bnf::tokenize) into an AST, using the given bnf::Grammar, and taking the given root rule name as the starting point.

print_ast_pred_recdec

For debugging only: print out the given AST.

visit_ast

Visit the AST with a possibly-impure callback. The AST itself cannot be modified this way.

Type Aliases

Guard

Arguments:

Hook

Arguments: