[llvm-commits] [llvm] r45129 - in /llvm/trunk: include/llvm/Bitcode/Deserialize.h lib/Bitcode/Reader/Deserialize.cpp

[Ted Kremenek]

Author: kremenek
Date: Mon Dec 17 16:25:12 2007
New Revision: 45129

URL: http://llvm.org/viewvc/llvm-project?rev=45129&view=rev
Log:
Modified Deserializer::ReadCStr to allow C-strings to be read into a
std::vector<char> starting from any index in the vector.

Modified:
    llvm/trunk/include/llvm/Bitcode/Deserialize.h
    llvm/trunk/lib/Bitcode/Reader/Deserialize.cpp

Modified: llvm/trunk/include/llvm/Bitcode/Deserialize.h
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Bitcode/Deserialize.h?rev=45129&r1=45128&r2=45129&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Bitcode/Deserialize.h (original)
+++ llvm/trunk/include/llvm/Bitcode/Deserialize.h Mon Dec 17 16:25:12 2007
@@ -156,7 +156,7 @@
   }
   
   char* ReadCStr(char* cstr = NULL, unsigned MaxLen=0, bool isNullTerm=true);
-  void ReadCStr(std::vector<char>& buff, bool isNullTerm=false);
+  void ReadCStr(std::vector<char>& buff, bool isNullTerm=false, unsigned 
Idx=0);
 
   template <typename T>
   inline T* ReadOwnedPtr(bool AutoRegister = true) {

Modified: llvm/trunk/lib/Bitcode/Reader/Deserialize.cpp
URL: 
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Bitcode/Reader/Deserialize.cpp?rev=45129&r1=45128&r2=45129&view=diff

==============================================================================
--- llvm/trunk/lib/Bitcode/Reader/Deserialize.cpp (original)
+++ llvm/trunk/lib/Bitcode/Reader/Deserialize.cpp Mon Dec 17 16:25:12 2007
@@ -329,11 +329,18 @@
   return cstr;
 }
 
-void Deserializer::ReadCStr(std::vector<char>& buff, bool isNullTerm) {
+void Deserializer::ReadCStr(std::vector<char>& buff, bool isNullTerm,
+                            unsigned Idx) {
+  
   unsigned len = ReadInt();
 
-  buff.clear();  
-  buff.reserve(len);
+  // If Idx is beyond the current before size, reduce Idx to refer to the
+  // element after the last element.
+  if (Idx > buff.size())
+    Idx = buff.size();
+
+  buff.reserve(len+Idx);
+  buff.resize(Idx);      
   
   for (unsigned i = 0; i < len; ++i)
     buff.push_back((char) ReadInt());


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