bjoernager/rust
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libcore: Fix more merge fallout.

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This commit is contained in:
Patrick Walton 2013-05-08 12:26:34 -07:00
parent 3affc6ed40
commit 72868450df
4 changed files with 31 additions and 7 deletions
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18
src/libsyntax/ext/build.rs
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@ -11,6 +11,7 @@
use ast;
use codemap;
use codemap::span;
use fold;
use ext::base::ext_ctxt;
use ext::build;
@ -516,3 +517,20 @@ pub fn mk_unreachable(cx: @ext_ctxt, span: span) -> @ast::expr {
pub fn mk_unreachable_arm(cx: @ext_ctxt, span: span) -> ast::arm {
mk_arm(cx, span, ~[mk_pat_wild(cx, span)], mk_unreachable(cx, span))
}
//
// Duplication functions
//
// These functions just duplicate AST nodes.
//
pub fn duplicate_expr(cx: @ext_ctxt, expr: @ast::expr) -> @ast::expr {
let folder = fold::default_ast_fold();
let folder = @fold::AstFoldFns {
new_id: |_| cx.next_id(),
..*folder
};
let folder = fold::make_fold(folder);
folder.fold_expr(expr)
}