simplify and refactor a bunch of type definition code in Preprocessor

predefines buffer initialization.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63919 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 34 insertions, 61 deletions

diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index 5eb74391c8..a0bd74b421 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -61,7 +61,7 @@ public:
 
   ///===---- Target Data Type Query Methods -------------------------------===//
   enum IntType {
-    NoInt = 0x0,
+    NoInt = 0,
     SignedShort,
     UnsignedShort,
     SignedInt,
@@ -165,6 +165,10 @@ public:
     return UserLabelPrefix;
   }
   
+  /// getTypeName - Return the user string for the specified integer type enum.
+  /// For example, SignedShort -> "short".
+  static const char *getTypeName(IntType T);
+  
   ///===---- Other target property query methods --------------------------===//
   
   /// getTargetDefines - Appends the target-specific #define values for this
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp
index 2b73582b78..378a91503b 100644
--- a/lib/Basic/TargetInfo.cpp
+++ b/lib/Basic/TargetInfo.cpp
@@ -51,6 +51,22 @@ TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
 // Out of line virtual dtor for TargetInfo.
 TargetInfo::~TargetInfo() {}
 
+/// getTypeName - Return the user string for the specified integer type enum.
+/// For example, SignedShort -> "short".
+const char *TargetInfo::getTypeName(IntType T) {
+  switch (T) {
+  default: assert(0 && "not an integer!");
+  case SignedShort:      return "short";
+  case UnsignedShort:    return "unsigned short";
+  case SignedInt:        return "int";
+  case UnsignedInt:      return "unsigned int";
+  case SignedLong:       return "long int";
+  case UnsignedLong:     return "long unsigned int";
+  case SignedLongLong:   return "long long int";
+  case UnsignedLongLong: return "long long unsigned int";
+  }
+}
+
 //===----------------------------------------------------------------------===//
 
 
diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index 69761c824a..c1e852cd2a 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -428,6 +428,14 @@ static void DefineTypeSize(const char *MacroName, unsigned TypeWidth,
   DefineBuiltinMacro(Buf, MacroBuf);
 }
 
+static void DefineType(const char *MacroName, TargetInfo::IntType Ty,
+                       std::vector<char> &Buf) {
+  char MacroBuf[60];
+  sprintf(MacroBuf, "%s=%s", MacroName, TargetInfo::getTypeName(Ty));
+  DefineBuiltinMacro(Buf, MacroBuf);
+}
+
+
 static void InitializePredefinedMacros(Preprocessor &PP, 
                                        std::vector<char> &Buf) {
   // Compiler version introspection macros.
@@ -520,8 +528,6 @@ static void InitializePredefinedMacros(Preprocessor &PP,
   DefineBuiltinMacro(Buf, "__WCHAR_TYPE__=int");
   DefineBuiltinMacro(Buf, "__WINT_TYPE__=int");
   
-
-  
   unsigned IntMaxWidth;
   const char *IntMaxSuffix;
   if (TI.getIntMaxType() == TargetInfo::SignedLongLong) {
@@ -544,64 +550,11 @@ static void InitializePredefinedMacros(Preprocessor &PP,
   DefineTypeSize("__WCHAR_MAX__", TI.getWCharWidth(), "", true, Buf);
   DefineTypeSize("__INTMAX_MAX__", IntMaxWidth, IntMaxSuffix, true, Buf);
 
-  if (TI.getIntMaxType() == TargetInfo::UnsignedLongLong)
-    DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=unsigned long long int");
-  else if (TI.getIntMaxType() == TargetInfo::SignedLongLong)
-    DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=long long int");
-  else if (TI.getIntMaxType() == TargetInfo::UnsignedLong)
-    DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=unsigned long int");
-  else if (TI.getIntMaxType() == TargetInfo::SignedLong)
-    DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=long int");
-  else if (TI.getIntMaxType() == TargetInfo::UnsignedInt)
-    DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=unsigned int");
-  else
-    DefineBuiltinMacro(Buf, "__INTMAX_TYPE__=int");
-  
-  if (TI.getUIntMaxType() == TargetInfo::UnsignedLongLong)
-    DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=unsigned long long int");
-  else if (TI.getUIntMaxType() == TargetInfo::SignedLongLong)
-    DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=long long int");
-  else if (TI.getUIntMaxType() == TargetInfo::UnsignedLong)
-    DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=unsigned long int");
-  else if (TI.getUIntMaxType() == TargetInfo::SignedLong)
-    DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=long int");
-  else if (TI.getUIntMaxType() == TargetInfo::UnsignedInt)
-    DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=unsigned int");
-  else
-    DefineBuiltinMacro(Buf, "__UINTMAX_TYPE__=int");
-  
-  if (TI.getPtrDiffType(0) == TargetInfo::UnsignedLongLong)
-    DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=unsigned long long int");
-  else if (TI.getPtrDiffType(0) == TargetInfo::SignedLongLong)
-    DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=long long int");
-  else if (TI.getPtrDiffType(0) == TargetInfo::UnsignedLong)
-    DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=unsigned long int");
-  else if (TI.getPtrDiffType(0) == TargetInfo::SignedLong)
-    DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=long int");
-  else if (TI.getPtrDiffType(0) == TargetInfo::UnsignedInt)
-    DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=unsigned int");
-  else {
-    assert(TI.getPtrDiffType(0) == TargetInfo::SignedInt);
-    DefineBuiltinMacro(Buf, "__PTRDIFF_TYPE__=int");
-  }
-  
-  if (TI.getSizeType() == TargetInfo::UnsignedLongLong)
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned long long int");
-  else if (TI.getSizeType() == TargetInfo::SignedLongLong)
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=long long int");
-  else if (TI.getSizeType() == TargetInfo::UnsignedLong)
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned long int");
-  else if (TI.getSizeType() == TargetInfo::SignedLong)
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=long int");
-  else if (TI.getSizeType() == TargetInfo::UnsignedInt)
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned int");
-  else if (TI.getSizeType() == TargetInfo::SignedInt)
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=int");
-  else {
-    assert(TI.getPtrDiffType(0) == TargetInfo::UnsignedShort);
-    DefineBuiltinMacro(Buf, "__SIZE_TYPE__=unsigned short");
-  }
-  
+  DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Buf);
+  DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Buf);
+  DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Buf);
+  DefineType("__SIZE_TYPE__", TI.getSizeType(), Buf);
+    
   DefineFloatMacros(Buf, "FLT", &TI.getFloatFormat());
   DefineFloatMacros(Buf, "DBL", &TI.getDoubleFormat());
   DefineFloatMacros(Buf, "LDBL", &TI.getLongDoubleFormat());