Struct cfgrammar::yacc::ast::ASTWithValidityInfo

pub struct ASTWithValidityInfo { /* private fields */ }

Contains a GrammarAST structure produced from a grammar source file. As well as any errors which occurred during the construction of the AST.

Implementations

impl ASTWithValidityInfo

pub fn new(yacc_kind: YaccKind, s: &str) -> Self

Parses a source file into an AST, returning an ast and any errors that were encountered during the construction of it. The ASTWithValidityInfo can be then unused to construct a YaccGrammar, which will either produce an Ok(YaccGrammar) or an Err which includes these errors.

pub fn ast(&self) -> &GrammarAST

Returns a GrammarAST constructed as the result of parsing a source file. When errors have occurred and is_valid returns false, this AST is the subset of the source file which parsed correctly while not encountering any errors. As such even when an AST is not valid, it will return an AST.

pub fn is_valid(&self) -> bool

Returns whether any errors where encountered during the parsing and validation of the AST during it’s construction.

pub fn errors(&self) -> &[YaccGrammarError]

Returns all errors which were encountered during AST construction.