[lld] r231206 - Simplify FileArchive. NFC.

[Rui Ueyama]

Author: ruiu
Date: Tue Mar  3 20:09:22 2015
New Revision: 231206

URL: http://llvm.org/viewvc/llvm-project?rev=231206&view=rev
Log:
Simplify FileArchive. NFC.

This patch moves local variable definitions so that their scope get narrower.
Also uses range-based loop. Both are for readability.

Modified:
    lld/trunk/lib/ReaderWriter/FileArchive.cpp

Modified: lld/trunk/lib/ReaderWriter/FileArchive.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/lib/ReaderWriter/FileArchive.cpp?rev=231206&r1=231205&r2=231206&view=diff
==============================================================================
--- lld/trunk/lib/ReaderWriter/FileArchive.cpp (original)
+++ lld/trunk/lib/ReaderWriter/FileArchive.cpp Tue Mar  3 20:09:22 2015
@@ -212,30 +212,23 @@ private:
     if (objOrErr.getError())
       return false;
     std::unique_ptr<ObjectFile> obj = std::move(objOrErr.get());
-    SymbolRef::Type symtype;
-    uint32_t symflags;
-    symbol_iterator ibegin = obj->symbol_begin();
-    symbol_iterator iend = obj->symbol_end();
-    StringRef symbolname;
 
-    for (symbol_iterator i = ibegin; i != iend; ++i) {
-      // Get symbol name
-      if (i->getName(symbolname))
+    for (SymbolRef sym : obj->symbols()) {
+      // Skip until we find the symbol.
+      StringRef name;
+      if (sym.getName(name))
         return false;
-      if (symbolname != symbol)
+      if (name != symbol)
         continue;
-
-      // Get symbol flags
-      symflags = i->getFlags();
-
-      if (symflags <= SymbolRef::SF_Undefined)
+      uint32_t flags = sym.getFlags();
+      if (flags <= SymbolRef::SF_Undefined)
         continue;
 
-      // Get Symbol Type
-      if (i->getType(symtype))
+      // Returns true if it's a data symbol.
+      SymbolRef::Type type;
+      if (sym.getType(type))
         return false;
-
-      if (symtype == SymbolRef::ST_Data)
+      if (type == SymbolRef::ST_Data)
         return true;
     }
     return false;
@@ -245,10 +238,9 @@ private:
     DEBUG_WITH_TYPE("FileArchive", llvm::dbgs()
                                        << "Table of contents for archive '"
                                        << _archive->getFileName() << "':\n");
-    for (auto i = _archive->symbol_begin(), e = _archive->symbol_end();
-         i != e; ++i) {
-      StringRef name = i->getName();
-      ErrorOr<Archive::child_iterator> memberOrErr = i->getMember();
+    for (const Archive::Symbol &sym : _archive->symbols()) {
+      StringRef name = sym.getName();
+      ErrorOr<Archive::child_iterator> memberOrErr = sym.getMember();
       if (std::error_code ec = memberOrErr.getError())
         return ec;
       Archive::child_iterator member = memberOrErr.get();