From d979b5048009c3909cfc13476a78a12ae5f4d61b Mon Sep 17 00:00:00 2001
From: Ellie Hermaszewska <ellieh@nvidia.com>
Date: Fri, 1 Mar 2024 01:50:19 +0800
Subject: Add support for bitfields (#3639)

* Add support for bitfields

Closes https://github.com/shader-slang/slang/issues/3559

* Set scopes for syntsized bitfield accessors

* Simplify generated code for bitfield accessors

* spelling

* regenerate vs project

* warnings
---
 source/slang/slang-parser.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'source/slang/slang-parser.cpp')

diff --git a/source/slang/slang-parser.cpp b/source/slang/slang-parser.cpp
index 5555647f4..3f1ed3f76 100644
--- a/source/slang/slang-parser.cpp
+++ b/source/slang/slang-parser.cpp
@@ -2970,6 +2970,15 @@ namespace Slang
             semantic->name = parser->ReadToken(TokenType::Identifier);
             return semantic;
         }
+        else if (parser->LookAheadToken(TokenType::IntegerLiteral))
+        {
+            BitFieldModifier* bitWidthMod = parser->astBuilder->create<BitFieldModifier>();
+            parser->FillPosition(bitWidthMod);
+            const auto token = parser->tokenReader.advanceToken();
+            UnownedStringSlice suffix;
+            bitWidthMod->width = getIntegerLiteralValue(token, &suffix);
+            return bitWidthMod;
+        }
         else if (parser->LookAheadToken(TokenType::CompletionRequest))
         {
             HLSLSimpleSemantic* semantic = parser->astBuilder->create<HLSLSimpleSemantic>();
-- 
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