From 4f2134cc33f07c09fe166cec42971828843bc0ef Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Sat, 2 May 2020 01:18:19 +0200
Subject: Introduce EffectExpr

---
 xtask/src/ast_src.rs            | 19 +++++++------------
 xtask/src/codegen/gen_syntax.rs |  1 +
 2 files changed, 8 insertions(+), 12 deletions(-)

(limited to 'xtask')

diff --git a/xtask/src/ast_src.rs b/xtask/src/ast_src.rs
index 1abb62f6f..028f7cbe1 100644
--- a/xtask/src/ast_src.rs
+++ b/xtask/src/ast_src.rs
@@ -162,7 +162,7 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
         "RECORD_LIT",
         "RECORD_FIELD_LIST",
         "RECORD_FIELD",
-        "TRY_BLOCK_EXPR",
+        "EFFECT_EXPR",
         "BOX_EXPR",
         // postfix
         "CALL_EXPR",
@@ -177,7 +177,6 @@ pub(crate) const KINDS_SRC: KindsSrc = KindsSrc {
         "PREFIX_EXPR",
         "RANGE_EXPR", // just weird
         "BIN_EXPR",
-        "BLOCK",
         "EXTERN_BLOCK",
         "EXTERN_ITEM_LIST",
         "ENUM_VARIANT",
@@ -440,7 +439,7 @@ pub(crate) const AST_SRC: AstSrc = AstSrc {
         }
         struct IfExpr: AttrsOwner { T![if], Condition }
         struct LoopExpr: AttrsOwner, LoopBodyOwner { T![loop] }
-        struct TryBlockExpr: AttrsOwner { T![try], body: BlockExpr }
+        struct EffectExpr: AttrsOwner { Label, T![try], T![unsafe], T![async], BlockExpr }
         struct ForExpr: AttrsOwner, LoopBodyOwner {
             T![for],
             Pat,
@@ -451,7 +450,9 @@ pub(crate) const AST_SRC: AstSrc = AstSrc {
         struct ContinueExpr: AttrsOwner { T![continue], T![lifetime] }
         struct BreakExpr: AttrsOwner { T![break], T![lifetime], Expr }
         struct Label { T![lifetime] }
-        struct BlockExpr: AttrsOwner { Label, T![unsafe], T![async], Block  }
+        struct BlockExpr: AttrsOwner, ModuleItemOwner {
+            T!['{'], statements: [Stmt], Expr, T!['}'],
+        }
         struct ReturnExpr: AttrsOwner { Expr }
         struct CallExpr: ArgListOwner { Expr }
         struct MethodCallExpr: AttrsOwner, ArgListOwner {
@@ -460,7 +461,7 @@ pub(crate) const AST_SRC: AstSrc = AstSrc {
         struct IndexExpr: AttrsOwner { T!['['], T![']'] }
         struct FieldExpr: AttrsOwner { Expr, T![.], NameRef }
         struct AwaitExpr: AttrsOwner { Expr, T![.], T![await] }
-        struct TryExpr: AttrsOwner { T![try], Expr }
+        struct TryExpr: AttrsOwner { Expr, T![?] }
         struct CastExpr: AttrsOwner { Expr, T![as], TypeRef }
         struct RefExpr: AttrsOwner { T![&], T![raw], T![mut], Expr }
         struct PrefixExpr: AttrsOwner { /*PrefixOp,*/ Expr }
@@ -556,12 +557,6 @@ pub(crate) const AST_SRC: AstSrc = AstSrc {
             T![;],
         }
         struct Condition { T![let], Pat, T![=], Expr }
-        struct Block: AttrsOwner, ModuleItemOwner {
-            T!['{'],
-            statements: [Stmt],
-            Expr,
-            T!['}'],
-        }
         struct ParamList {
             T!['('],
             SelfParam,
@@ -722,7 +717,7 @@ pub(crate) const AST_SRC: AstSrc = AstSrc {
             FieldExpr,
             AwaitExpr,
             TryExpr,
-            TryBlockExpr,
+            EffectExpr,
             CastExpr,
             RefExpr,
             PrefixExpr,
diff --git a/xtask/src/codegen/gen_syntax.rs b/xtask/src/codegen/gen_syntax.rs
index e9dc09552..8028575c5 100644
--- a/xtask/src/codegen/gen_syntax.rs
+++ b/xtask/src/codegen/gen_syntax.rs
@@ -432,6 +432,7 @@ impl Field<'_> {
                     ":" => "colon",
                     "::" => "coloncolon",
                     "#" => "pound",
+                    "?" => "question_mark",
                     _ => name,
                 };
                 format_ident!("{}_token", name)
-- 
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