Struct stack_graphs::partial::SymbolStackBindings

pub struct SymbolStackBindings { /* fields omitted */ }

A mapping from symbol stack variables to symbol stacks.

Implementations

impl SymbolStackBindings

pub fn new() -> SymbolStackBindings

Creates a new, empty set of symbol stack bindings.

pub fn get(
    &self,
    variable: SymbolStackVariable
) -> Result<SymbolStack, PathResolutionError>

Returns the symbol stack that a particular symbol stack variable matched. Returns an error if that variable didn’t match anything.

pub fn add(
    &mut self,
    variable: SymbolStackVariable,
    symbols: SymbolStack
) -> Result<(), PathResolutionError>

Adds a new binding from a symbol stack variable to the symbol stack that it matched. Returns an error if you try to bind a particular variable more than once.