mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2025-04-17 05:40:48 +00:00
2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
//===- AnnotateFunctions.cpp ----------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Example clang plugin which adds an annotation to every function in
|
|
// translation units that start with #pragma enable_annotate.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "clang/Frontend/FrontendPluginRegistry.h"
|
|
#include "clang/AST/AST.h"
|
|
#include "clang/AST/ASTConsumer.h"
|
|
#include "clang/Lex/Preprocessor.h"
|
|
#include "clang/Lex/LexDiagnostic.h"
|
|
using namespace clang;
|
|
|
|
namespace {
|
|
|
|
static bool EnableAnnotate = false;
|
|
static bool HandledDecl = false;
|
|
|
|
class AnnotateFunctionsConsumer : public ASTConsumer {
|
|
public:
|
|
bool HandleTopLevelDecl(DeclGroupRef DG) override {
|
|
HandledDecl = true;
|
|
if (!EnableAnnotate)
|
|
return true;
|
|
for (auto D : DG)
|
|
if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D))
|
|
FD->addAttr(AnnotateAttr::CreateImplicit(FD->getASTContext(),
|
|
"example_annotation"));
|
|
return true;
|
|
}
|
|
};
|
|
|
|
class AnnotateFunctionsAction : public PluginASTAction {
|
|
public:
|
|
std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
|
|
llvm::StringRef) override {
|
|
return llvm::make_unique<AnnotateFunctionsConsumer>();
|
|
}
|
|
|
|
bool ParseArgs(const CompilerInstance &CI,
|
|
const std::vector<std::string> &args) override {
|
|
return true;
|
|
}
|
|
|
|
PluginASTAction::ActionType getActionType() override {
|
|
return AddBeforeMainAction;
|
|
}
|
|
};
|
|
|
|
class PragmaAnnotateHandler : public PragmaHandler {
|
|
public:
|
|
PragmaAnnotateHandler() : PragmaHandler("enable_annotate") { }
|
|
|
|
void HandlePragma(Preprocessor &PP, PragmaIntroducerKind Introducer,
|
|
Token &PragmaTok) override {
|
|
|
|
Token Tok;
|
|
PP.LexUnexpandedToken(Tok);
|
|
if (Tok.isNot(tok::eod))
|
|
PP.Diag(Tok, diag::ext_pp_extra_tokens_at_eol) << "pragma";
|
|
|
|
if (HandledDecl) {
|
|
DiagnosticsEngine &D = PP.getDiagnostics();
|
|
unsigned ID = D.getCustomDiagID(
|
|
DiagnosticsEngine::Error,
|
|
"#pragma enable_annotate not allowed after declarations");
|
|
D.Report(PragmaTok.getLocation(), ID);
|
|
}
|
|
|
|
EnableAnnotate = true;
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
static FrontendPluginRegistry::Add<AnnotateFunctionsAction>
|
|
X("annotate-fns", "annotate functions");
|
|
|
|
static PragmaHandlerRegistry::Add<PragmaAnnotateHandler>
|
|
Y("enable_annotate","enable annotation");
|