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// Copyright 2013 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your // option. This file may not be copied, modified, or distributed // except according to those terms. //! Module for inferring the variance of type and lifetime //! parameters. See README.md for details. use arena; use rustc::ty::TyCtxt; /// Defines the `TermsContext` basically houses an arena where we can /// allocate terms. mod terms; /// Code to gather up constraints. mod constraints; /// Code to solve constraints and write out the results. mod solve; /// Code for transforming variances. mod xform; pub fn infer_variance<'a, 'tcx>(tcx: TyCtxt<'a, 'tcx, 'tcx>) { let mut arena = arena::TypedArena::new(); let terms_cx = terms::determine_parameters_to_be_inferred(tcx, &mut arena); let constraints_cx = constraints::add_constraints_from_crate(terms_cx); solve::solve_constraints(constraints_cx); tcx.variance_computed.set(true); }