From ac319b27348f60e37f3f1b478fee00202280715f Mon Sep 17 00:00:00 2001
From: Vexu <git@vexu.eu>
Date: Thu, 14 May 2020 11:19:14 +0300
Subject: [PATCH] remove useless nosuspend parsing

nosuspend cannot be used in a type expression and
all other use casesare covered by PrimaryExpr
---
 doc/langref.html.in   |  3 +++
 lib/std/zig/parse.zig | 10 ----------
 src/parser.cpp        |  9 ---------
 3 files changed, 3 insertions(+), 19 deletions(-)

diff --git a/doc/langref.html.in b/doc/langref.html.in
index 5bf91ca70f..0733540478 100644
--- a/doc/langref.html.in
+++ b/doc/langref.html.in
@@ -10096,6 +10096,7 @@ ContainerField &lt;- IDENTIFIER (COLON TypeExpr)? (EQUAL Expr)?
 Statement
     &lt;- KEYWORD_comptime? VarDecl
      / KEYWORD_comptime BlockExprStatement
+     / KEYWORD_nosuspend BlockExprStatement
      / KEYWORD_suspend (SEMICOLON / BlockExprStatement)
      / KEYWORD_defer BlockExprStatement
      / KEYWORD_errdefer BlockExprStatement
@@ -10152,6 +10153,7 @@ PrimaryExpr
      / IfExpr
      / KEYWORD_break BreakLabel? Expr?
      / KEYWORD_comptime Expr
+     / KEYWORD_nosuspend Expr
      / KEYWORD_continue BreakLabel?
      / KEYWORD_resume Expr
      / KEYWORD_return Expr?
@@ -10514,6 +10516,7 @@ KEYWORD_for         &lt;- 'for'         end_of_word
 KEYWORD_if          &lt;- 'if'          end_of_word
 KEYWORD_inline      &lt;- 'inline'      end_of_word
 KEYWORD_noalias     &lt;- 'noalias'     end_of_word
+KEYWORD_nosuspend   &lt;- 'nosuspend'   end_of_word
 KEYWORD_null        &lt;- 'null'        end_of_word
 KEYWORD_or          &lt;- 'or'          end_of_word
 KEYWORD_orelse      &lt;- 'orelse'      end_of_word
diff --git a/lib/std/zig/parse.zig b/lib/std/zig/parse.zig
index 6c664bbda2..c16dba4a11 100644
--- a/lib/std/zig/parse.zig
+++ b/lib/std/zig/parse.zig
@@ -1389,7 +1389,6 @@ fn parseSuffixExpr(arena: *Allocator, it: *TokenIterator, tree: *Tree) !?*Node {
 ///      / IfTypeExpr
 ///      / INTEGER
 ///      / KEYWORD_comptime TypeExpr
-///      / KEYWORD_nosuspend TypeExpr
 ///      / KEYWORD_error DOT IDENTIFIER
 ///      / KEYWORD_false
 ///      / KEYWORD_null
@@ -1428,15 +1427,6 @@ fn parsePrimaryTypeExpr(arena: *Allocator, it: *TokenIterator, tree: *Tree) !?*N
         };
         return &node.base;
     }
-    if (eatToken(it, .Keyword_nosuspend)) |token| {
-        const expr = (try parseTypeExpr(arena, it, tree)) orelse return null;
-        const node = try arena.create(Node.Nosuspend);
-        node.* = .{
-            .nosuspend_token = token,
-            .expr = expr,
-        };
-        return &node.base;
-    }
     if (eatToken(it, .Keyword_error)) |token| {
         const period = try expectToken(it, tree, .Period);
         const identifier = try expectNode(arena, it, tree, parseIdentifier, .{
diff --git a/src/parser.cpp b/src/parser.cpp
index 1a929cd1b1..fc9814f393 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -1609,7 +1609,6 @@ static AstNode *ast_parse_suffix_expr(ParseContext *pc) {
 //      / IfTypeExpr
 //      / INTEGER
 //      / KEYWORD_comptime TypeExpr
-//      / KEYWORD_nosuspend TypeExpr
 //      / KEYWORD_error DOT IDENTIFIER
 //      / KEYWORD_false
 //      / KEYWORD_null
@@ -1711,14 +1710,6 @@ static AstNode *ast_parse_primary_type_expr(ParseContext *pc) {
         return res;
     }
 
-    Token *nosuspend = eat_token_if(pc, TokenIdKeywordNoSuspend);
-    if (nosuspend != nullptr) {
-        AstNode *expr = ast_expect(pc, ast_parse_type_expr);
-        AstNode *res = ast_create_node(pc, NodeTypeNoSuspend, nosuspend);
-        res->data.nosuspend_expr.expr = expr;
-        return res;
-    }
-
     Token *error = eat_token_if(pc, TokenIdKeywordError);
     if (error != nullptr) {
         Token *dot = expect_token(pc, TokenIdDot);