intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 87 insertions, 0 deletions

diff --git a/contrib/libs/llvm12/include/llvm/MC/MCParser/AsmLexer.h b/contrib/libs/llvm12/include/llvm/MC/MCParser/AsmLexer.h
new file mode 100644
index 0000000000..47d4149dd6
--- /dev/null
+++ b/contrib/libs/llvm12/include/llvm/MC/MCParser/AsmLexer.h
@@ -0,0 +1,87 @@
+#pragma once
+
+#ifdef __GNUC__
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+
+//===- AsmLexer.h - Lexer for Assembly Files --------------------*- 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 class declares the lexer for assembly files.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_MCPARSER_ASMLEXER_H
+#define LLVM_MC_MCPARSER_ASMLEXER_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include <string>
+
+namespace llvm {
+
+class MCAsmInfo;
+
+/// AsmLexer - Lexer class for assembly files.
+class AsmLexer : public MCAsmLexer {
+  const MCAsmInfo &MAI;
+
+  const char *CurPtr = nullptr;
+  StringRef CurBuf;
+  bool IsAtStartOfLine = true;
+  bool IsAtStartOfStatement = true;
+  bool IsPeeking = false;
+  bool EndStatementAtEOF = true;
+
+protected:
+  /// LexToken - Read the next token and return its code.
+  AsmToken LexToken() override;
+
+public:
+  AsmLexer(const MCAsmInfo &MAI);
+  AsmLexer(const AsmLexer &) = delete;
+  AsmLexer &operator=(const AsmLexer &) = delete;
+  ~AsmLexer() override;
+
+  void setBuffer(StringRef Buf, const char *ptr = nullptr,
+                 bool EndStatementAtEOF = true);
+
+  StringRef LexUntilEndOfStatement() override;
+
+  size_t peekTokens(MutableArrayRef<AsmToken> Buf,
+                    bool ShouldSkipSpace = true) override;
+
+  const MCAsmInfo &getMAI() const { return MAI; }
+
+private:
+  bool isAtStartOfComment(const char *Ptr);
+  bool isAtStatementSeparator(const char *Ptr);
+  int getNextChar();
+  int peekNextChar();
+  AsmToken ReturnError(const char *Loc, const std::string &Msg);
+
+  AsmToken LexIdentifier();
+  AsmToken LexSlash();
+  AsmToken LexLineComment();
+  AsmToken LexDigit();
+  AsmToken LexSingleQuote();
+  AsmToken LexQuote();
+  AsmToken LexFloatLiteral();
+  AsmToken LexHexFloatLiteral(bool NoIntDigits);
+
+  StringRef LexUntilEndOfLine();
+};
+
+} // end namespace llvm
+
+#endif // LLVM_MC_MCPARSER_ASMLEXER_H
+
+#ifdef __GNUC__
+#pragma GCC diagnostic pop
+#endif