Struct SymbolTable 

pub struct SymbolTable { /* private fields */ }

Registry of named definitions in a query.

Stores the mapping from definition names to their AST expressions, along with source file information for diagnostics.

Implementations

impl SymbolTable

pub fn new() -> Self

pub fn insert(&mut self, name: &str, source_id: SourceId, expr: Expr) -> bool

Insert a symbol definition.

Returns true if the symbol was newly inserted, false if it already existed (in which case the old value is replaced).

pub fn remove(&mut self, name: &str) -> Option<(SourceId, Expr)>

Remove a symbol definition.

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

Check if a symbol is defined.

pub fn get(&self, name: &str) -> Option<&Expr>

Get the expression for a symbol.

pub fn source_id(&self, name: &str) -> Option<SourceId>

Get the source file where a symbol is defined.

pub fn get_full(&self, name: &str) -> Option<(SourceId, &Expr)>

Get both the source ID and expression for a symbol.

pub fn len(&self) -> usize

Number of symbols in the symbol table.

pub fn is_empty(&self) -> bool

Check if the symbol table is empty.

pub fn keys(&self) -> impl Iterator<Item = &str>

Iterate over symbol names in insertion order.

pub fn iter(&self) -> impl Iterator<Item = (&str, &Expr)>

Iterate over (name, expr) pairs in insertion order.

pub fn iter_full(&self) -> impl Iterator<Item = (&str, SourceId, &Expr)>

Iterate over (name, source_id, expr) tuples in insertion order.

Trait Implementations

impl Clone for SymbolTable

fn clone(&self) -> SymbolTable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SymbolTable

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SymbolTable

fn default() -> SymbolTable

Returns the “default value” for a type.