[pdb] Round trip the NameMap data structure to YAML.
llvm-svn: 275628
diff --git a/llvm/lib/DebugInfo/PDB/Raw/NameMapBuilder.cpp b/llvm/lib/DebugInfo/PDB/Raw/NameMapBuilder.cpp
index fe033c3..41c6c2c 100644
--- a/llvm/lib/DebugInfo/PDB/Raw/NameMapBuilder.cpp
+++ b/llvm/lib/DebugInfo/PDB/Raw/NameMapBuilder.cpp
@@ -10,17 +10,41 @@
#include "llvm/DebugInfo/PDB/Raw/NameMapBuilder.h"
#include "llvm/DebugInfo/PDB/Raw/NameMap.h"
+#include "llvm/Support/Endian.h"
using namespace llvm;
using namespace llvm::pdb;
NameMapBuilder::NameMapBuilder() {}
+void NameMapBuilder::addMapping(StringRef Name, uint32_t Mapping) {
+ StringDataBytes += Name.size() + 1;
+ Map.insert({Name, Mapping});
+}
+
Expected<std::unique_ptr<NameMap>> NameMapBuilder::build() {
- return llvm::make_unique<NameMap>();
+ auto Result = llvm::make_unique<NameMap>();
+ Result->Mapping = Map;
+ return std::move(Result);
}
uint32_t NameMapBuilder::calculateSerializedLength() const {
- // For now we write an empty name map, nothing else.
- return 5 * sizeof(uint32_t);
+ uint32_t TotalLength = 0;
+
+ TotalLength += sizeof(support::ulittle32_t); // StringDataBytes value
+ TotalLength += StringDataBytes; // actual string data
+
+ TotalLength += sizeof(support::ulittle32_t); // Hash Size
+ TotalLength += sizeof(support::ulittle32_t); // Max Number of Strings
+ TotalLength += sizeof(support::ulittle32_t); // Num Present Words
+ // One bitmask word for each present entry
+ TotalLength += Map.size() * sizeof(support::ulittle32_t);
+ TotalLength += sizeof(support::ulittle32_t); // Num Deleted Words
+
+ // For each present word, which we are treating as equivalent to the number of
+ // entries in the table, we have a pair of integers. An offset into the
+ // string data, and a corresponding stream number.
+ TotalLength += Map.size() * 2 * sizeof(support::ulittle32_t);
+
+ return TotalLength;
}