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//===--- InsertionPoint.h - Where should we add new code? --------*- C++-*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/AST/DeclCXX.h"
#include "clang/Basic/Specifiers.h"
#include "clang/Tooling/Core/Replacement.h"
namespace clang {
namespace clangd {
// An anchor describes where to insert code into a decl sequence.
//
// It allows inserting above or below a block of decls matching some criterion.
// For example, "insert after existing constructors".
struct Anchor {
// A predicate describing which decls are considered part of a block.
// Match need not handle TemplateDecls, which are unwrapped before matching.
std::function<bool(const Decl *)> Match;
// Whether the insertion point should be before or after the matching block.
enum Dir { Above, Below } Direction = Below;
};
// Returns the point to insert a declaration according to Anchors.
// Anchors are tried in order. For each, the first matching location is chosen.
SourceLocation insertionPoint(const DeclContext &Ctx,
llvm::ArrayRef<Anchor> Anchors);
// Returns an edit inserting Code inside Ctx.
// Location is chosen according to Anchors, falling back to the end of Ctx.
// Fails if the chosen insertion point is in a different file than Ctx itself.
llvm::Expected<tooling::Replacement> insertDecl(llvm::StringRef Code,
const DeclContext &Ctx,
llvm::ArrayRef<Anchor> Anchors);
// Variant for C++ classes that ensures the right access control.
SourceLocation insertionPoint(const CXXRecordDecl &InClass,
std::vector<Anchor> Anchors,
AccessSpecifier Protection);
// Variant for C++ classes that ensures the right access control.
// May insert a new access specifier if needed.
llvm::Expected<tooling::Replacement> insertDecl(llvm::StringRef Code,
const CXXRecordDecl &InClass,
std::vector<Anchor> Anchors,
AccessSpecifier Protection);
} // namespace clangd
} // namespace clang
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