1 //===- lib/MC/MCNullStreamer.cpp - Dummy Streamer Implementation ----------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "llvm/ADT/StringRef.h"
10 #include "llvm/MC/MCInst.h"
11 #include "llvm/MC/MCStreamer.h"
12 #include "llvm/MC/MCSymbol.h"
13 
14 using namespace llvm;
15 
16 namespace {
17 
18   class MCNullStreamer : public MCStreamer {
19   public:
20     MCNullStreamer(MCContext &Context) : MCStreamer(Context) {}
21 
22     /// @name MCStreamer Interface
23     /// @{
24 
25     bool hasRawTextSupport() const override { return true; }
26     void emitRawTextImpl(StringRef String) override {}
27 
28     bool emitSymbolAttribute(MCSymbol *Symbol,
29                              MCSymbolAttr Attribute) override {
30       return true;
31     }
32 
33     void emitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
34                           unsigned ByteAlignment) override {}
35     void emitZerofill(MCSection *Section, MCSymbol *Symbol = nullptr,
36                       uint64_t Size = 0, unsigned ByteAlignment = 0,
37                       SMLoc Loc = SMLoc()) override {}
38     void emitGPRel32Value(const MCExpr *Value) override {}
39     void BeginCOFFSymbolDef(const MCSymbol *Symbol) override {}
40     void EmitCOFFSymbolStorageClass(int StorageClass) override {}
41     void EmitCOFFSymbolType(int Type) override {}
42     void EndCOFFSymbolDef() override {}
43     void
44     emitXCOFFSymbolLinkageWithVisibility(MCSymbol *Symbol, MCSymbolAttr Linkage,
45                                          MCSymbolAttr Visibility) override {}
46   };
47 
48 }
49 
50 MCStreamer *llvm::createNullStreamer(MCContext &Context) {
51   return new MCNullStreamer(Context);
52 }
53