llvm/clang/include/clang/Lex/LiteralSupport.h

//===--- LiteralSupport.h ---------------------------------------*- 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 NumericLiteralParser, CharLiteralParser, and
// StringLiteralParser interfaces.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_LEX_LITERALSUPPORT_H
#define LLVM_CLANG_LEX_LITERALSUPPORT_H

#include "clang/Basic/CharInfo.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/TokenKinds.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"

namespace clang {

class DiagnosticsEngine;
class Preprocessor;
class Token;
class SourceLocation;
class TargetInfo;
class SourceManager;
class LangOptions;

/// Copy characters from Input to Buf, expanding any UCNs.
void expandUCNs(SmallVectorImpl<char> &Buf, StringRef Input);

/// Return true if the token corresponds to a function local predefined macro,
/// which expands to a string literal, that can be concatenated with other
/// string literals (only in Microsoft mode).
bool isFunctionLocalStringLiteralMacro(tok::TokenKind K, const LangOptions &LO);

/// Return true if the token is a string literal, or a function local
/// predefined macro, which expands to a string literal.
bool tokenIsLikeStringLiteral(const Token &Tok, const LangOptions &LO);

/// NumericLiteralParser - This performs strict semantic analysis of the content
/// of a ppnumber, classifying it as either integer, floating, or erroneous,
/// determines the radix of the value and can convert it to a useful value.
class NumericLiteralParser { … };

/// CharLiteralParser - Perform interpretation and semantic analysis of a
/// character literal.
class CharLiteralParser { … };

enum class StringLiteralEvalMethod { … };

/// StringLiteralParser - This decodes string escape characters and performs
/// wide string analysis and Translation Phase #6 (concatenation of string
/// literals) (C99 5.1.1.2p1).
class StringLiteralParser { … };

}  // end namespace clang

#endif