Add is_mutbl field to arg

Author: sanxiyn

src/librustc/middle/trans/base.rs

@@ -1845,6 +1845,7 @@ fn trans_enum_variant(ccx: @crate_ctxt,
     let fn_args = do args.map |varg| {
         ast::arg {
             mode: ast::expl(ast::by_copy),
+            is_mutbl: false,
             ty: varg.ty,
             pat: ast_util::ident_to_pat(
                 ccx.tcx.sess.next_node_id(),
@@ -1908,6 +1909,7 @@ fn trans_tuple_struct(ccx: @crate_ctxt,
     let fn_args = do fields.map |field| {
         ast::arg {
             mode: ast::expl(ast::by_copy),
+            is_mutbl: false,
             ty: field.node.ty,
             pat: ast_util::ident_to_pat(ccx.tcx.sess.next_node_id(),
                                         ast_util::dummy_sp(),

src/libsyntax/ast.rs

@@ -1194,11 +1194,11 @@ impl Ty : to_bytes::IterBytes {
     }
 }
 
-
 #[auto_encode]
 #[auto_decode]
 struct arg {
     mode: mode,
+    is_mutbl: bool,
     ty: @Ty,
     pat: @pat,
     id: node_id,

src/libsyntax/ext/auto_encode.rs

@@ -595,6 +595,7 @@ fn mk_ser_method(
 
     let ser_inputs = ~[ast::arg {
         mode: ast::infer(cx.next_id()),
+        is_mutbl: false,
         ty: ty_s,
         pat: @ast::pat {
             id: cx.next_id(),
@@ -658,6 +659,7 @@ fn mk_deser_method(
 
     let deser_inputs = ~[ast::arg {
         mode: ast::infer(cx.next_id()),
+        is_mutbl: false,
         ty: ty_d,
         pat: @ast::pat {
             id: cx.next_id(),
@@ -1194,6 +1196,7 @@ fn mk_enum_deser_body(
             ast::fn_decl {
                 inputs: ~[ast::arg {
                     mode: ast::infer(cx.next_id()),
+                    is_mutbl: false,
                     ty: @ast::Ty {
                         id: cx.next_id(),
                         node: ast::ty_infer,

src/libsyntax/ext/build.rs

@@ -319,6 +319,7 @@ fn mk_arg(cx: ext_ctxt,
     let arg_pat = mk_pat_ident(cx, span, ident);
     ast::arg {
         mode: ast::infer(cx.next_id()),
+        is_mutbl: false,
         ty: ty,
         pat: arg_pat,
         id: cx.next_id()

src/libsyntax/ext/pipes/ast_builder.rs

@@ -200,6 +200,7 @@ impl ext_ctxt: ext_ctxt_ast_builder {
     fn arg(name: ident, ty: @ast::Ty) -> ast::arg {
         ast::arg {
             mode: ast::infer(self.next_id()),
+            is_mutbl: false,
             ty: ty,
             pat: @ast::pat {
                 id: self.next_id(),

src/libsyntax/fold.rs

@@ -127,6 +127,7 @@ fn fold_attribute_(at: attribute, fld: ast_fold) -> attribute {
 fn fold_arg_(a: arg, fld: ast_fold) -> arg {
     ast::arg {
         mode: a.mode,
+        is_mutbl: a.is_mutbl,
         ty: fld.fold_ty(a.ty),
         pat: fld.fold_pat(a.pat),
         id: fld.new_id(a.id),

src/libsyntax/parse/parser.rs

@@ -716,6 +716,7 @@ impl Parser {
     // identifier names.
     fn parse_arg_general(require_name: bool) -> arg {
         let mut m;
+        let is_mutbl = false;
         let pat = if require_name || self.is_named_argument() {
             m = self.parse_arg_mode();
             let pat = self.parse_pat(false);
@@ -730,7 +731,8 @@ impl Parser {
 
         let t = self.parse_ty(false);
 
-        ast::arg { mode: m, ty: t, pat: pat, id: self.get_id() }
+        ast::arg { mode: m, is_mutbl: is_mutbl,
+                  ty: t, pat: pat, id: self.get_id() }
     }
 
     fn parse_arg() -> arg_or_capture_item {
@@ -756,6 +758,7 @@ impl Parser {
             };
             either::Left(ast::arg {
                 mode: m,
+                is_mutbl: false,
                 ty: t,
                 pat: pat,
                 id: p.get_id()