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rustc: Record the parent blocks of locals

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This commit is contained in:
Patrick Walton 2012-03-14 11:41:20 -07:00
parent de79caa97e
commit 3a45f87620
1 changed files with 12 additions and 1 deletions
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13
src/rustc/middle/region.rs
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@ -269,6 +269,16 @@ fn resolve_expr(expr: @ast::expr, cx: ctxt, visitor: visit::vt<ctxt>) {
}
}
fn resolve_local(local: @ast::local, cx: ctxt, visitor: visit::vt<ctxt>) {
alt cx.parent {
pa_block(blk_id) {
cx.region_map.rvalue_to_block.insert(local.node.id, blk_id);
}
_ { cx.sess.span_bug(local.span, "local outside of block?!"); }
}
visit::visit_local(local, cx, visitor);
}
fn resolve_item(item: @ast::item, cx: ctxt, visitor: visit::vt<ctxt>) {
// Items create a new outer block scope as far as we're concerned.
let parent = alt item.node {
@ -304,7 +314,8 @@ fn resolve_crate(sess: session, def_map: resolve::def_map, crate: @ast::crate)
visit_ty: resolve_ty,
visit_arm: resolve_arm,
visit_pat: resolve_pat,
visit_expr: resolve_expr
visit_expr: resolve_expr,
visit_local: resolve_local
with *visit::default_visitor()
});
visit::visit_crate(*crate, cx, visitor);