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782ac2182c
This is first part for support cbuffer/tbuffer.
The format for cbuffer/tbuffer is
BufferType [Name] [: register(b#)] { VariableDeclaration [: packoffset(c#.xyzw)]; ... };
More details at https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/dx-graphics-hlsl-constants
New keyword 'cbuffer' and 'tbuffer' are added.
New AST node HLSLBufferDecl is added.
Build AST for simple cbuffer/tbuffer without attribute support.
The special thing is variables declared inside cbuffer is exposed into global scope.
So isTransparentContext should return true for HLSLBuffer.
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D129883
35 lines
1.3 KiB
C++
35 lines
1.3 KiB
C++
//===- SemaHLSL.cpp - Semantic Analysis for HLSL constructs ---------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// This implements Semantic Analysis for HLSL constructs.
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//===----------------------------------------------------------------------===//
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#include "clang/Sema/Sema.h"
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using namespace clang;
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Decl *Sema::ActOnStartHLSLBuffer(Scope *BufferScope, bool CBuffer,
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SourceLocation KwLoc, IdentifierInfo *Ident,
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SourceLocation IdentLoc,
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SourceLocation LBrace) {
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// For anonymous namespace, take the location of the left brace.
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DeclContext *LexicalParent = getCurLexicalContext();
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HLSLBufferDecl *Result = HLSLBufferDecl::Create(
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Context, LexicalParent, CBuffer, KwLoc, Ident, IdentLoc, LBrace);
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PushOnScopeChains(Result, BufferScope);
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PushDeclContext(BufferScope, Result);
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return Result;
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}
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void Sema::ActOnFinishHLSLBuffer(Decl *Dcl, SourceLocation RBrace) {
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auto *BufDecl = cast<HLSLBufferDecl>(Dcl);
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BufDecl->setRBraceLoc(RBrace);
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PopDeclContext();
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}
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