Update pretty printer for ports, channels, send and receive

src/comp/front/parser.rs

@@ -1621,6 +1621,8 @@ fn stmt_ends_with_semi(@ast.stmt stmt) -> bool {
                 case (ast.expr_assign(_,_,_))   { ret true; }
                 case (ast.expr_assign_op(_,_,_,_))
                     { ret true; }
+                case (ast.expr_send(_,_,_))     { ret true; }
+                case (ast.expr_recv(_,_,_))     { ret true; }
                 case (ast.expr_field(_,_,_))    { ret true; }
                 case (ast.expr_index(_,_,_))    { ret true; }
                 case (ast.expr_path(_,_,_))     { ret true; }

src/comp/pretty/pprust.rs

@@ -78,6 +78,8 @@ fn ty_to_str(&@ast.ty ty) -> str {
     case (ast.ty_str) {wrd(s, "str");}
     case (ast.ty_box(?mt)) {wrd(s, "@"); print_mt(s, mt);}
     case (ast.ty_vec(?mt)) {wrd(s, "vec["); print_mt(s, mt); wrd(s, "]");}
+    case (ast.ty_port(?t)) {wrd(s, "port["); print_type(s, t); wrd(s, "]");}
+    case (ast.ty_chan(?t)) {wrd(s, "chan["); print_type(s, t); wrd(s, "]");}
     case (ast.ty_type) {wrd(s, "type");}
     case (ast.ty_tup(?elts)) {
       wrd(s, "tup");
@@ -481,6 +483,18 @@ fn ty_to_str(&@ast.ty ty) -> str {
       wrd1(s, "=");
       print_expr(s, rhs);
     }
+    case (ast.expr_send(?lhs, ?rhs, _)) {
+      print_expr(s, lhs);
+      space(s);
+      wrd1(s, "<|");
+      print_expr(s, rhs);
+    }
+    case (ast.expr_recv(?lhs, ?rhs, _)) {
+      print_expr(s, lhs);
+      space(s);
+      wrd1(s, "<-");
+      print_expr(s, rhs);
+    }
     case (ast.expr_field(?expr,?id,_)) {
       print_expr(s, expr);
       wrd(s, ".");
@@ -541,6 +555,17 @@ fn ty_to_str(&@ast.ty ty) -> str {
       }
       // TODO: extension 'body'
     }
+    case (ast.expr_port(_)) {
+      wrd(s, "port");
+      popen(s);
+      pclose(s);
+    }
+    case (ast.expr_chan(?expr, _)) {
+      wrd(s, "chan");
+      popen(s);
+      print_expr(s, expr);
+      pclose(s);
+    }
   }
   end(s);
 }
@@ -563,7 +588,14 @@ fn ty_to_str(&@ast.ty ty) -> str {
       alt (loc.init) {
         case (option.some[ast.initializer](?init)) {
           space(s);
-          wrd1(s, "=");
+          alt (init.op) {
+            case (ast.init_assign) {
+              wrd1(s, "=");
+            }
+            case (ast.init_recv) {
+              wrd1(s, "<-");
+            }
+          }
           print_expr(s, init.expr);
         }
         case (_) {}