[C++] Use 'nullptr'.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207083 91177308-0d34-0410-b5e6-96231b3b80d8

7 files changed, 33 insertions, 33 deletions

diff --git a/lib/MC/MCParser/AsmLexer.cpp b/lib/MC/MCParser/AsmLexer.cpp
index a3b68d8380..bca516eca0 100644
--- a/lib/MC/MCParser/AsmLexer.cpp
+++ b/lib/MC/MCParser/AsmLexer.cpp
@@ -22,8 +22,8 @@
 using namespace llvm;
 
 AsmLexer::AsmLexer(const MCAsmInfo &_MAI) : MAI(_MAI)  {
-  CurBuf = NULL;
-  CurPtr = NULL;
+  CurBuf = nullptr;
+  CurPtr = nullptr;
   isAtStartOfLine = true;
   AllowAtInIdentifier = !StringRef(MAI.getCommentString()).startswith("@");
 }
@@ -39,7 +39,7 @@ void AsmLexer::setBuffer(const MemoryBuffer *buf, const char *ptr) {
   else
     CurPtr = CurBuf->getBufferStart();
 
-  TokStart = 0;
+  TokStart = nullptr;
 }
 
 /// ReturnError - Set the error to the specified string at the specified
@@ -218,7 +218,7 @@ static void SkipIgnoredIntegerSuffix(const char *&CurPtr) {
 // Look ahead to search for first non-hex digit, if it's [hH], then we treat the
 // integer as a hexadecimal, possibly with leading zeroes.
 static unsigned doLookAhead(const char *&CurPtr, unsigned DefaultRadix) {
-  const char *FirstHex = 0;
+  const char *FirstHex = nullptr;
   const char *LookAhead = CurPtr;
   while (1) {
     if (isdigit(*LookAhead)) {
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index c34fe8a413..bad28ef87d 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -111,7 +111,7 @@ struct ParseStatementInfo {
 
   SmallVectorImpl<AsmRewrite> *AsmRewrites;
 
-  ParseStatementInfo() : Opcode(~0U), ParseError(false), AsmRewrites(0) {}
+  ParseStatementInfo() : Opcode(~0U), ParseError(false), AsmRewrites(nullptr) {}
   ParseStatementInfo(SmallVectorImpl<AsmRewrite> *rewrites)
     : Opcode(~0), ParseError(false), AsmRewrites(rewrites) {}
 
@@ -496,7 +496,7 @@ enum { DEFAULT_ADDRSPACE = 0 };
 AsmParser::AsmParser(SourceMgr &_SM, MCContext &_Ctx, MCStreamer &_Out,
                      const MCAsmInfo &_MAI)
     : Lexer(_MAI), Ctx(_Ctx), Out(_Out), MAI(_MAI), SrcMgr(_SM),
-      PlatformParser(0), CurBuffer(0), MacrosEnabledFlag(true),
+      PlatformParser(nullptr), CurBuffer(0), MacrosEnabledFlag(true),
       CppHashLineNumber(0), AssemblerDialect(~0U), IsDarwin(false),
       ParsingInlineAsm(false) {
   // Save the old handler.
@@ -960,7 +960,7 @@ AsmParser::applyModifierToExpr(const MCExpr *E,
   switch (E->getKind()) {
   case MCExpr::Target:
   case MCExpr::Constant:
-    return 0;
+    return nullptr;
 
   case MCExpr::SymbolRef: {
     const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(E);
@@ -978,7 +978,7 @@ AsmParser::applyModifierToExpr(const MCExpr *E,
     const MCUnaryExpr *UE = cast<MCUnaryExpr>(E);
     const MCExpr *Sub = applyModifierToExpr(UE->getSubExpr(), Variant);
     if (!Sub)
-      return 0;
+      return nullptr;
     return MCUnaryExpr::Create(UE->getOpcode(), Sub, getContext());
   }
 
@@ -988,7 +988,7 @@ AsmParser::applyModifierToExpr(const MCExpr *E,
     const MCExpr *RHS = applyModifierToExpr(BE->getRHS(), Variant);
 
     if (!LHS && !RHS)
-      return 0;
+      return nullptr;
 
     if (!LHS)
       LHS = BE->getLHS();
@@ -1014,7 +1014,7 @@ AsmParser::applyModifierToExpr(const MCExpr *E,
 ///
 bool AsmParser::parseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
   // Parse the expression.
-  Res = 0;
+  Res = nullptr;
   if (parsePrimaryExpr(Res, EndLoc) || parseBinOpRHS(1, Res, EndLoc))
     return true;
 
@@ -1051,7 +1051,7 @@ bool AsmParser::parseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
 }
 
 bool AsmParser::parseParenExpression(const MCExpr *&Res, SMLoc &EndLoc) {
-  Res = 0;
+  Res = nullptr;
   return parseParenExpr(Res, EndLoc) || parseBinOpRHS(1, Res, EndLoc);
 }
 
@@ -1702,7 +1702,7 @@ void AsmParser::DiagHandler(const SMDiagnostic &Diag, void *Context) {
     if (Parser->SavedDiagHandler)
       Parser->SavedDiagHandler(Diag, Parser->SavedDiagContext);
     else
-      Diag.print(0, OS);
+      Diag.print(nullptr, OS);
     return;
   }
 
@@ -1724,7 +1724,7 @@ void AsmParser::DiagHandler(const SMDiagnostic &Diag, void *Context) {
   if (Parser->SavedDiagHandler)
     Parser->SavedDiagHandler(NewDiag, Parser->SavedDiagContext);
   else
-    NewDiag.print(0, OS);
+    NewDiag.print(nullptr, OS);
 }
 
 // FIXME: This is mostly duplicated from the function in AsmLexer.cpp. The
@@ -2066,7 +2066,7 @@ bool AsmParser::parseMacroArguments(const MCAsmMacro *M,
 
 const MCAsmMacro *AsmParser::lookupMacro(StringRef Name) {
   StringMap<MCAsmMacro *>::iterator I = MacroMap.find(Name);
-  return (I == MacroMap.end()) ? NULL : I->getValue();
+  return (I == MacroMap.end()) ? nullptr : I->getValue();
 }
 
 void AsmParser::defineMacro(StringRef Name, const MCAsmMacro &Macro) {
@@ -3930,9 +3930,9 @@ bool AsmParser::parseDirectiveIfdef(SMLoc DirectiveLoc, bool expect_defined) {
     MCSymbol *Sym = getContext().LookupSymbol(Name);
 
     if (expect_defined)
-      TheCondState.CondMet = (Sym != NULL && !Sym->isUndefined());
+      TheCondState.CondMet = (Sym && !Sym->isUndefined());
     else
-      TheCondState.CondMet = (Sym == NULL || Sym->isUndefined());
+      TheCondState.CondMet = (!Sym || Sym->isUndefined());
     TheCondState.Ignore = !TheCondState.CondMet;
   }
 
@@ -4175,7 +4175,7 @@ MCAsmMacro *AsmParser::parseMacroLikeBody(SMLoc DirectiveLoc) {
     // Check whether we have reached the end of the file.
     if (getLexer().is(AsmToken::Eof)) {
       Error(DirectiveLoc, "no matching '.endr' in definition");
-      return 0;
+      return nullptr;
     }
 
     if (Lexer.is(AsmToken::Identifier) &&
@@ -4190,7 +4190,7 @@ MCAsmMacro *AsmParser::parseMacroLikeBody(SMLoc DirectiveLoc) {
         Lex();
         if (Lexer.isNot(AsmToken::EndOfStatement)) {
           TokError("unexpected token in '.endr' directive");
-          return 0;
+          return nullptr;
         }
         break;
       }
@@ -4284,7 +4284,7 @@ bool AsmParser::parseDirectiveIrp(SMLoc DirectiveLoc) {
   Lex();
 
   MCAsmMacroArguments A;
-  if (parseMacroArguments(0, A))
+  if (parseMacroArguments(nullptr, A))
     return true;
 
   // Eat the end of statement.
@@ -4324,7 +4324,7 @@ bool AsmParser::parseDirectiveIrpc(SMLoc DirectiveLoc) {
   Lex();
 
   MCAsmMacroArguments A;
-  if (parseMacroArguments(0, A))
+  if (parseMacroArguments(nullptr, A))
     return true;
 
   if (A.size() != 1 || A.front().size() != 1)
diff --git a/lib/MC/MCParser/COFFAsmParser.cpp b/lib/MC/MCParser/COFFAsmParser.cpp
index 76d3f813fc..decf01c46c 100644
--- a/lib/MC/MCParser/COFFAsmParser.cpp
+++ b/lib/MC/MCParser/COFFAsmParser.cpp
@@ -293,7 +293,7 @@ bool COFFAsmParser::ParseSectionSwitch(StringRef Section,
                                        unsigned Characteristics,
                                        SectionKind Kind) {
   return ParseSectionSwitch(Section, Characteristics, Kind, "",
-                            COFF::IMAGE_COMDAT_SELECT_ANY, 0);
+                            COFF::IMAGE_COMDAT_SELECT_ANY, nullptr);
 }
 
 bool COFFAsmParser::ParseSectionSwitch(StringRef Section,
@@ -359,7 +359,7 @@ bool COFFAsmParser::ParseDirectiveSection(StringRef, SMLoc) {
   }
 
   COFF::COMDATType Type = COFF::IMAGE_COMDAT_SELECT_ANY;
-  const MCSectionCOFF *Assoc = 0;
+  const MCSectionCOFF *Assoc = nullptr;
   StringRef COMDATSymName;
   if (getLexer().is(AsmToken::Comma)) {
     Lex();
@@ -504,7 +504,7 @@ bool COFFAsmParser::parseCOMDATTypeAndAssoc(COFF::COMDATType &Type,
 ///  ::= .linkonce [ identifier [ identifier ] ]
 bool COFFAsmParser::ParseDirectiveLinkOnce(StringRef, SMLoc Loc) {
   COFF::COMDATType Type = COFF::IMAGE_COMDAT_SELECT_ANY;
-  const MCSectionCOFF *Assoc = 0;
+  const MCSectionCOFF *Assoc = nullptr;
   if (getLexer().is(AsmToken::Identifier))
     if (parseCOMDATTypeAndAssoc(Type, Assoc))
       return true;
diff --git a/lib/MC/MCParser/DarwinAsmParser.cpp b/lib/MC/MCParser/DarwinAsmParser.cpp
index 0856b6e388..873a87d413 100644
--- a/lib/MC/MCParser/DarwinAsmParser.cpp
+++ b/lib/MC/MCParser/DarwinAsmParser.cpp
@@ -612,8 +612,8 @@ bool DarwinAsmParser::parseDirectivePopSection(StringRef, SMLoc) {
 ///   ::= .previous
 bool DarwinAsmParser::parseDirectivePrevious(StringRef DirName, SMLoc) {
   MCSectionSubPair PreviousSection = getStreamer().getPreviousSection();
-  if (PreviousSection.first == NULL)
-      return TokError(".previous without corresponding .section");
+  if (!PreviousSection.first)
+    return TokError(".previous without corresponding .section");
   getStreamer().SwitchSection(PreviousSection.first, PreviousSection.second);
   return false;
 }
@@ -630,13 +630,13 @@ bool DarwinAsmParser::parseDirectiveSecureLogUnique(StringRef, SMLoc IDLoc) {
 
   // Get the secure log path.
   const char *SecureLogFile = getContext().getSecureLogFile();
-  if (SecureLogFile == NULL)
+  if (!SecureLogFile)
     return Error(IDLoc, ".secure_log_unique used but AS_SECURE_LOG_FILE "
                  "environment variable unset.");
 
   // Open the secure log file if we haven't already.
   raw_ostream *OS = getContext().getSecureLog();
-  if (OS == NULL) {
+  if (!OS) {
     std::string Err;
     OS = new raw_fd_ostream(SecureLogFile, Err,
                             sys::fs::F_Append | sys::fs::F_Text);
diff --git a/lib/MC/MCParser/ELFAsmParser.cpp b/lib/MC/MCParser/ELFAsmParser.cpp
index d79dd670bb..95c4971c52 100644
--- a/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/lib/MC/MCParser/ELFAsmParser.cpp
@@ -193,7 +193,7 @@ bool ELFAsmParser::ParseDirectiveSymbolAttribute(StringRef Directive, SMLoc) {
 
 bool ELFAsmParser::ParseSectionSwitch(StringRef Section, unsigned Type,
                                       unsigned Flags, SectionKind Kind) {
-  const MCExpr *Subsection = 0;
+  const MCExpr *Subsection = nullptr;
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
     if (getParser().parseExpression(Subsection))
       return true;
@@ -411,7 +411,7 @@ bool ELFAsmParser::ParseSectionArguments(bool IsPush) {
   int64_t Size = 0;
   StringRef GroupName;
   unsigned Flags = 0;
-  const MCExpr *Subsection = 0;
+  const MCExpr *Subsection = nullptr;
   bool UseLastGroup = false;
 
   // Set the defaults first.
@@ -554,7 +554,7 @@ EndStmt:
 
 bool ELFAsmParser::ParseDirectivePrevious(StringRef DirName, SMLoc) {
   MCSectionSubPair PreviousSection = getStreamer().getPreviousSection();
-  if (PreviousSection.first == NULL)
+  if (PreviousSection.first == nullptr)
       return TokError(".previous without corresponding .section");
   getStreamer().SwitchSection(PreviousSection.first, PreviousSection.second);
 
@@ -730,7 +730,7 @@ bool ELFAsmParser::ParseDirectiveWeakref(StringRef, SMLoc) {
 }
 
 bool ELFAsmParser::ParseDirectiveSubsection(StringRef, SMLoc) {
-  const MCExpr *Subsection = 0;
+  const MCExpr *Subsection = nullptr;
   if (getLexer().isNot(AsmToken::EndOfStatement)) {
     if (getParser().parseExpression(Subsection))
      return true;
diff --git a/lib/MC/MCParser/MCAsmLexer.cpp b/lib/MC/MCParser/MCAsmLexer.cpp
index 3867691107..530814b006 100644
--- a/lib/MC/MCParser/MCAsmLexer.cpp
+++ b/lib/MC/MCParser/MCAsmLexer.cpp
@@ -13,7 +13,7 @@
 using namespace llvm;
 
 MCAsmLexer::MCAsmLexer() : CurTok(AsmToken::Error, StringRef()),
-                           TokStart(0), SkipSpace(true) {
+                           TokStart(nullptr), SkipSpace(true) {
 }
 
 MCAsmLexer::~MCAsmLexer() {
diff --git a/lib/MC/MCParser/MCAsmParser.cpp b/lib/MC/MCParser/MCAsmParser.cpp
index 6e1ebad36c..e417aa9771 100644
--- a/lib/MC/MCParser/MCAsmParser.cpp
+++ b/lib/MC/MCParser/MCAsmParser.cpp
@@ -17,7 +17,7 @@
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
-MCAsmParser::MCAsmParser() : TargetParser(0), ShowParsedOperands(0) {
+MCAsmParser::MCAsmParser() : TargetParser(nullptr), ShowParsedOperands(0) {
 }
 
 MCAsmParser::~MCAsmParser() {