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//===--- CodeCompletionHandler.h - Preprocessor code completion -*- 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
//
//===----------------------------------------------------------------------===//
//
// This file defines the CodeCompletionHandler interface, which provides
// code-completion callbacks for the preprocessor.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LEX_CODECOMPLETIONHANDLER_H
#define LLVM_CLANG_LEX_CODECOMPLETIONHANDLER_H
#include "llvm/ADT/StringRef.h"
namespace clang {
class IdentifierInfo;
class MacroInfo;
/// Callback handler that receives notifications when performing code
/// completion within the preprocessor.
class CodeCompletionHandler {
public:
virtual ~CodeCompletionHandler();
/// Callback invoked when performing code completion for a preprocessor
/// directive.
///
/// This callback will be invoked when the preprocessor processes a '#' at the
/// start of a line, followed by the code-completion token.
///
/// \param InConditional Whether we're inside a preprocessor conditional
/// already.
virtual void CodeCompleteDirective(bool InConditional) { }
/// Callback invoked when performing code completion within a block of
/// code that was excluded due to preprocessor conditionals.
virtual void CodeCompleteInConditionalExclusion() { }
/// Callback invoked when performing code completion in a context
/// where the name of a macro is expected.
///
/// \param IsDefinition Whether this is the definition of a macro, e.g.,
/// in a \#define.
virtual void CodeCompleteMacroName(bool IsDefinition) { }
/// Callback invoked when performing code completion in a preprocessor
/// expression, such as the condition of an \#if or \#elif directive.
virtual void CodeCompletePreprocessorExpression() { }
/// Callback invoked when performing code completion inside a
/// function-like macro argument.
///
/// There will be another callback invocation after the macro arguments are
/// parsed, so this callback should generally be used to note that the next
/// callback is invoked inside a macro argument.
virtual void CodeCompleteMacroArgument(IdentifierInfo *Macro,
MacroInfo *MacroInfo,
unsigned ArgumentIndex) { }
/// Callback invoked when performing code completion inside the filename
/// part of an #include directive. (Also #import, #include_next, etc).
/// \p Dir is the directory relative to the include path.
virtual void CodeCompleteIncludedFile(llvm::StringRef Dir, bool IsAngled) {}
/// Callback invoked when performing code completion in a part of the
/// file where we expect natural language, e.g., a comment, string, or
/// \#error directive.
virtual void CodeCompleteNaturalLanguage() { }
};
}
#endif // LLVM_CLANG_LEX_CODECOMPLETIONHANDLER_H
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