Struct ParseContext 

pub struct ParseContext {
    pub scopes: ScopeStack,
    /* private fields */
}

Holds the state for backtracking and error reporting. This must be passed mutably through the parsing chain.

Fields

scopes: ScopeStack

Implementations

impl ParseContext

pub fn new() -> Self

pub fn set_fatal(&mut self, fatal: bool)

pub fn check_fatal(&self) -> bool

pub fn enter_rule(&mut self, name: &str)

pub fn exit_rule(&mut self)

pub fn record_error(&mut self, err: Error, start_span: Span)

Records an error if it is “deeper” than the current best error.

pub fn take_best_error(&mut self) -> Option<Error>

pub fn enter_scope(&mut self)

pub fn exit_scope(&mut self)

pub fn define(&mut self, name: impl Into<String>)

pub fn is_defined(&self, name: &str) -> bool

pub fn scopes(&self) -> &Vec<HashSet<String>>

pub fn rule_stack(&self) -> &Vec<String>

Trait Implementations

impl Clone for ParseContext

fn clone(&self) -> ParseContext

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ParseContext

Available on crate feature rt only.

fn default() -> Self

Returns the “default value” for a type.