Struct cranelift_isle::sema::TermEnv

pub struct TermEnv {
    pub terms: Vec<Term>,
    pub term_map: StableMap<Sym, TermId>,
    pub rules: Vec<Rule>,
    pub converters: StableMap<(TypeId, TypeId), TermId>,
}

The term environment.

This is sort of a typed and reorganized AST that more directly reflects ISLE semantics than the input ISLE source code (where as the AST is the opposite).

Fields

terms: Vec<Term>

Arena of interned terms defined in this ISLE program.

This is indexed by TermId.

term_map: StableMap<Sym, TermId>

A map from am interned Term’s name to its TermId.

rules: Vec<Rule>

Arena of interned rules defined in this ISLE program.

This is indexed by RuleId.

converters: StableMap<(TypeId, TypeId), TermId>

Map from (inner_ty, outer_ty) pairs to term IDs, giving the defined implicit type-converter terms we can try to use to fit types together.

Implementations

impl TermEnv

pub fn from_ast(tyenv: &mut TypeEnv, defs: &Defs) -> Result<TermEnv>

Construct the term environment from the AST and the type environment.

Trait Implementations

impl Clone for TermEnv

fn clone(&self) -> TermEnv

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TermEnv

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

Formats the value using the given formatter.