1 //===- SkeletonEmitter.cpp - Skeleton TableGen backend          -*- C++ -*-===//
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 // This Tablegen backend emits ...
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/ADT/ArrayRef.h"
14 #include "llvm/ADT/DenseMap.h"
15 #include "llvm/ADT/StringExtras.h"
16 #include "llvm/Support/Format.h"
17 #include "llvm/Support/MemoryBuffer.h"
18 #include "llvm/Support/SourceMgr.h"
19 #include "llvm/TableGen/Error.h"
20 #include "llvm/TableGen/Record.h"
21 #include "llvm/TableGen/TableGenBackend.h"
22 #include <algorithm>
23 #include <set>
24 #include <string>
25 #include <vector>
26 
27 #define DEBUG_TYPE "skeleton-emitter"
28 
29 using namespace llvm;
30 
31 namespace {
32 
33 // Any helper data structures can be defined here. Some backends use
34 // structs to collect information from the records.
35 
36 class SkeletonEmitter {
37 private:
38   RecordKeeper &Records;
39 
40 public:
41   SkeletonEmitter(RecordKeeper &RK) : Records(RK) {}
42 
43   void run(raw_ostream &OS);
44 }; // End emitter class.
45 
46 } // End anonymous namespace.
47 
48 void SkeletonEmitter::run(raw_ostream &OS) {
49   emitSourceFileHeader("Skeleton data structures", OS);
50 }
51 
52 namespace llvm {
53 
54 // The only thing that should be in the llvm namespace is the
55 // emitter entry point function.
56 
57 void EmitSkeleton(RecordKeeper &RK, raw_ostream &OS) {
58   // Instantiate the emitter class and invoke run().
59   SkeletonEmitter(RK).run(OS);
60 }
61 
62 } // End llvm namespace.
63