Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/lib/TableGen/TGLexer.h

@@ -1,140 +0,0 @@
-//===- TGLexer.h - Lexer for TableGen Files ---------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This class represents the Lexer for tablegen files.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_TABLEGEN_TGLEXER_H
-#define LLVM_LIB_TABLEGEN_TGLEXER_H
-
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/DataTypes.h"
-#include "llvm/Support/SMLoc.h"
-#include <cassert>
-#include <map>
-#include <string>
-
-namespace llvm {
-class SourceMgr;
-class SMLoc;
-class Twine;
-
-namespace tgtok {
-  enum TokKind {
-    // Markers
-    Eof, Error,
-    
-    // Tokens with no info.
-    minus, plus,        // - +
-    l_square, r_square, // [ ]
-    l_brace, r_brace,   // { }
-    l_paren, r_paren,   // ( )
-    less, greater,      // < >
-    colon, semi,        // : ;
-    comma, period,      // , .
-    equal, question,    // = ?
-    paste,              // #
-
-    // Keywords.
-    Bit, Bits, Class, Code, Dag, Def, Foreach, Defm, Field, In, Int, Let, List,
-    MultiClass, String,
-
-    // !keywords.
-    XConcat, XADD, XAND, XOR, XSRA, XSRL, XSHL, XListConcat, XStrConcat, XCast,
-    XSubst, XForEach, XHead, XTail, XEmpty, XIf, XEq,
-
-    // Integer value.
-    IntVal,
-
-    // Binary constant.  Note that these are sized according to the number of
-    // bits given.
-    BinaryIntVal,
-    
-    // String valued tokens.
-    Id, StrVal, VarName, CodeFragment
-  };
-}
-
-/// TGLexer - TableGen Lexer class.
-class TGLexer {
-  SourceMgr &SrcMgr;
-  
-  const char *CurPtr;
-  StringRef CurBuf;
-
-  // Information about the current token.
-  const char *TokStart;
-  tgtok::TokKind CurCode;
-  std::string CurStrVal;  // This is valid for ID, STRVAL, VARNAME, CODEFRAGMENT
-  int64_t CurIntVal;      // This is valid for INTVAL.
-
-  /// CurBuffer - This is the current buffer index we're lexing from as managed
-  /// by the SourceMgr object.
-  unsigned CurBuffer;
-
-public:
-  typedef std::map<std::string, SMLoc> DependenciesMapTy;
-private:
-  /// Dependencies - This is the list of all included files.
-  DependenciesMapTy Dependencies;
-
-public:
-  TGLexer(SourceMgr &SrcMgr);
-
-  tgtok::TokKind Lex() {
-    return CurCode = LexToken();
-  }
-
-  const DependenciesMapTy &getDependencies() const {
-    return Dependencies;
-  }
-  
-  tgtok::TokKind getCode() const { return CurCode; }
-
-  const std::string &getCurStrVal() const {
-    assert((CurCode == tgtok::Id || CurCode == tgtok::StrVal || 
-            CurCode == tgtok::VarName || CurCode == tgtok::CodeFragment) &&
-           "This token doesn't have a string value");
-    return CurStrVal;
-  }
-  int64_t getCurIntVal() const {
-    assert(CurCode == tgtok::IntVal && "This token isn't an integer");
-    return CurIntVal;
-  }
-  std::pair<int64_t, unsigned> getCurBinaryIntVal() const {
-    assert(CurCode == tgtok::BinaryIntVal &&
-           "This token isn't a binary integer");
-    return std::make_pair(CurIntVal, (CurPtr - TokStart)-2);
-  }
-
-  SMLoc getLoc() const;
-  
-private:
-  /// LexToken - Read the next token and return its code.
-  tgtok::TokKind LexToken();
-  
-  tgtok::TokKind ReturnError(const char *Loc, const Twine &Msg);
-  
-  int getNextChar();
-  int peekNextChar(int Index);
-  void SkipBCPLComment();
-  bool SkipCComment();
-  tgtok::TokKind LexIdentifier();
-  bool LexInclude();
-  tgtok::TokKind LexString();
-  tgtok::TokKind LexVarName();
-  tgtok::TokKind LexNumber();
-  tgtok::TokKind LexBracket();
-  tgtok::TokKind LexExclaim();
-};
-  
-} // end namespace llvm
-
-#endif