Add a herper function. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242100 91177308-0d34-0410-b5e6-96231b3b80d8

Author: espindola

include/llvm/Object/Archive.h

@@ -207,6 +207,7 @@ class Archive : public Binary {
 
   bool hasSymbolTable() const;
   child_iterator getSymbolTableChild() const { return SymbolTable; }
+  StringRef getSymbolTable() const { return SymbolTable->getBuffer(); }
   uint32_t getNumberOfSymbols() const;
 
 private:

lib/Object/Archive.cpp

@@ -353,11 +353,11 @@ Archive::child_iterator Archive::child_end() const {
 }
 
 StringRef Archive::Symbol::getName() const {
-  return Parent->SymbolTable->getBuffer().begin() + StringIndex;
+  return Parent->getSymbolTable().begin() + StringIndex;
 }
 
 ErrorOr<Archive::child_iterator> Archive::Symbol::getMember() const {
-  const char *Buf = Parent->SymbolTable->getBuffer().begin();
+  const char *Buf = Parent->getSymbolTable().begin();
   const char *Offsets = Buf;
   if (Parent->kind() == K_MIPS64)
     Offsets += sizeof(uint64_t);
@@ -421,7 +421,7 @@ Archive::Symbol Archive::Symbol::getNext() const {
     // and the second being the offset into the archive of the member that
     // define the symbol. After that the next uint32_t is the byte count of
     // the string table followed by the string table.
-    const char *Buf = Parent->SymbolTable->getBuffer().begin();
+    const char *Buf = Parent->getSymbolTable().begin();
     uint32_t RanlibCount = 0;
     RanlibCount = read32le(Buf) / 8;
     // If t.SymbolIndex + 1 will be past the count of symbols (the RanlibCount)
@@ -438,8 +438,7 @@ Archive::Symbol Archive::Symbol::getNext() const {
     }
   } else {
     // Go to one past next null.
-    t.StringIndex =
-        Parent->SymbolTable->getBuffer().find('\0', t.StringIndex) + 1;
+    t.StringIndex = Parent->getSymbolTable().find('\0', t.StringIndex) + 1;
   }
   ++t.SymbolIndex;
   return t;
@@ -449,7 +448,7 @@ Archive::symbol_iterator Archive::symbol_begin() const {
   if (!hasSymbolTable())
     return symbol_iterator(Symbol(this, 0, 0));
 
-  const char *buf = SymbolTable->getBuffer().begin();
+  const char *buf = getSymbolTable().begin();
   if (kind() == K_GNU) {
     uint32_t symbol_count = 0;
     symbol_count = read32be(buf);
@@ -481,7 +480,7 @@ Archive::symbol_iterator Archive::symbol_begin() const {
     symbol_count = read32le(buf);
     buf += 4 + (symbol_count * 2); // Skip indices.
   }
-  uint32_t string_start_offset = buf - SymbolTable->getBuffer().begin();
+  uint32_t string_start_offset = buf - getSymbolTable().begin();
   return symbol_iterator(Symbol(this, 0, string_start_offset));
 }
 
@@ -492,7 +491,7 @@ Archive::symbol_iterator Archive::symbol_end() const {
 }
 
 uint32_t Archive::getNumberOfSymbols() const {
-  const char *buf = SymbolTable->getBuffer().begin();
+  const char *buf = getSymbolTable().begin();
   if (kind() == K_GNU)
     return read32be(buf);
   if (kind() == K_MIPS64)