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Port const_eval from oldvisit to <V:Visitor> trait API.

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This commit is contained in:
Felix S. Klock II 2013-08-13 03:37:40 +02:00
parent 54ee3d03ff
commit 635d91737a
1 changed files with 13 additions and 6 deletions
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19
src/librustc/middle/const_eval.rs
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@ -14,7 +14,9 @@ use middle::astencode;
use middle::ty;
use middle;
use syntax::{ast, ast_map, ast_util, oldvisit};
use syntax::{ast, ast_map, ast_util};
use syntax::visit;
use syntax::visit::Visitor;
use syntax::ast::*;
use std::float;
@ -265,13 +267,18 @@ pub fn lookup_constness(tcx: ty::ctxt, e: &expr) -> constness {
}
}
struct ConstEvalVisitor { tcx: ty::ctxt }
impl Visitor<()> for ConstEvalVisitor {
fn visit_expr_post(&mut self, e:@expr, _:()) {
classify(e, self.tcx);
}
}
pub fn process_crate(crate: &ast::Crate,
tcx: ty::ctxt) {
let v = oldvisit::mk_simple_visitor(@oldvisit::SimpleVisitor {
visit_expr_post: |e| { classify(e, tcx); },
.. *oldvisit::default_simple_visitor()
});
oldvisit::visit_crate(crate, ((), v));
let mut v = ConstEvalVisitor { tcx: tcx };
visit::walk_crate(&mut v, crate, ());
tcx.sess.abort_if_errors();
}