librustc: Remove `~EXPR`, `~TYPE`, and `~PAT` from the language, except

for `~str`/`~[]`.

Note that `~self` still remains, since I forgot to add support for
`Box<self>` before the snapshot.

How to update your code:

* Instead of `~EXPR`, you should write `box EXPR`.

* Instead of `~TYPE`, you should write `Box<Type>`.

* Instead of `~PATTERN`, you should write `box PATTERN`.

[breaking-change]

1 files changed, 12 insertions, 6 deletions

diff --git a/src/libsyntax/ext/quote.rs b/src/libsyntax/ext/quote.rs
index fc7f7722354..4d8be9bab76 100644
--- a/src/libsyntax/ext/quote.rs
+++ b/src/libsyntax/ext/quote.rs
@@ -17,6 +17,7 @@ use parse::token::*;
 use parse::token;
 use parse;
 
+
 /**
 *
 * Quasiquoting works via token trees.
@@ -312,7 +313,8 @@ pub mod rt {
 
 pub fn expand_quote_tokens(cx: &mut ExtCtxt,
                            sp: Span,
-                           tts: &[ast::TokenTree]) -> ~base::MacResult {
+                           tts: &[ast::TokenTree])
+                           -> Box<base::MacResult> {
     let (cx_expr, expr) = expand_tts(cx, sp, tts);
     let expanded = expand_wrapper(cx, sp, cx_expr, expr);
     base::MacExpr::new(expanded)
@@ -320,14 +322,15 @@ pub fn expand_quote_tokens(cx: &mut ExtCtxt,
 
 pub fn expand_quote_expr(cx: &mut ExtCtxt,
                          sp: Span,
-                         tts: &[ast::TokenTree]) -> ~base::MacResult {
+                         tts: &[ast::TokenTree]) -> Box<base::MacResult> {
     let expanded = expand_parse_call(cx, sp, "parse_expr", Vec::new(), tts);
     base::MacExpr::new(expanded)
 }
 
 pub fn expand_quote_item(cx: &mut ExtCtxt,
                          sp: Span,
-                         tts: &[ast::TokenTree]) -> ~base::MacResult {
+                         tts: &[ast::TokenTree])
+                         -> Box<base::MacResult> {
     let e_attrs = cx.expr_vec_ng(sp);
     let expanded = expand_parse_call(cx, sp, "parse_item",
                                     vec!(e_attrs), tts);
@@ -336,7 +339,8 @@ pub fn expand_quote_item(cx: &mut ExtCtxt,
 
 pub fn expand_quote_pat(cx: &mut ExtCtxt,
                         sp: Span,
-                        tts: &[ast::TokenTree]) -> ~base::MacResult {
+                        tts: &[ast::TokenTree])
+                        -> Box<base::MacResult> {
     let e_refutable = cx.expr_lit(sp, ast::LitBool(true));
     let expanded = expand_parse_call(cx, sp, "parse_pat",
                                     vec!(e_refutable), tts);
@@ -345,7 +349,8 @@ pub fn expand_quote_pat(cx: &mut ExtCtxt,
 
 pub fn expand_quote_ty(cx: &mut ExtCtxt,
                        sp: Span,
-                       tts: &[ast::TokenTree]) -> ~base::MacResult {
+                       tts: &[ast::TokenTree])
+                       -> Box<base::MacResult> {
     let e_param_colons = cx.expr_lit(sp, ast::LitBool(false));
     let expanded = expand_parse_call(cx, sp, "parse_ty",
                                      vec!(e_param_colons), tts);
@@ -354,7 +359,8 @@ pub fn expand_quote_ty(cx: &mut ExtCtxt,
 
 pub fn expand_quote_stmt(cx: &mut ExtCtxt,
                          sp: Span,
-                         tts: &[ast::TokenTree]) -> ~base::MacResult {
+                         tts: &[ast::TokenTree])
+                         -> Box<base::MacResult> {
     let e_attrs = cx.expr_vec_ng(sp);
     let expanded = expand_parse_call(cx, sp, "parse_stmt",
                                     vec!(e_attrs), tts);