[Lldb-commits] [PATCH] D50677: Remove manual byte counting from Opcode::Dump

[Raphael Isemann via Phabricator via lldb-commits]

teemperor created this revision.
teemperor added a reviewer: clayborg.

Stream now has byte-counting functionality, so let's use this instead of manual byte
counting.


Repository:
  rLLDB LLDB

https://reviews.llvm.org/D50677

Files:
  source/Core/Opcode.cpp


Index: source/Core/Opcode.cpp
===================================================================
--- source/Core/Opcode.cpp
+++ source/Core/Opcode.cpp
@@ -23,40 +23,41 @@
 using namespace lldb_private;
 
 int Opcode::Dump(Stream *s, uint32_t min_byte_width) {
-  int bytes_written = 0;
+  const uint32_t previous_bytes = s->GetWrittenBytes();
   switch (m_type) {
   case Opcode::eTypeInvalid:
-    bytes_written = s->PutCString("<invalid>");
+    s->PutCString("<invalid>");
     break;
   case Opcode::eType8:
-    bytes_written = s->Printf("0x%2.2x", m_data.inst8);
+    s->Printf("0x%2.2x", m_data.inst8);
     break;
   case Opcode::eType16:
-    bytes_written = s->Printf("0x%4.4x", m_data.inst16);
+    s->Printf("0x%4.4x", m_data.inst16);
     break;
   case Opcode::eType16_2:
   case Opcode::eType32:
-    bytes_written = s->Printf("0x%8.8x", m_data.inst32);
+    s->Printf("0x%8.8x", m_data.inst32);
     break;
 
   case Opcode::eType64:
-    bytes_written = s->Printf("0x%16.16" PRIx64, m_data.inst64);
+    s->Printf("0x%16.16" PRIx64, m_data.inst64);
     break;
 
   case Opcode::eTypeBytes:
     for (uint32_t i = 0; i < m_data.inst.length; ++i) {
       if (i > 0)
-        bytes_written += s->PutChar(' ');
-      bytes_written += s->Printf("%2.2x", m_data.inst.bytes[i]);
+        s->PutChar(' ');
+      s->Printf("%2.2x", m_data.inst.bytes[i]);
     }
     break;
   }
 
-  // Add spaces to make sure bytes dispay comes out even in case opcodes aren't
-  // all the same size
-  if (static_cast<uint32_t>(bytes_written) < min_byte_width)
-    bytes_written = s->Printf("%*s", min_byte_width - bytes_written, "");
-  return bytes_written;
+  uint32_t bytes_written_so_far = s->GetWrittenBytes() - previous_bytes;
+  // Add spaces to make sure bytes display comes out even in case opcodes aren't
+  // all the same size.
+  if (bytes_written_so_far < min_byte_width)
+    s->Printf("%*s", min_byte_width - bytes_written_so_far, "");
+  return s->GetWrittenBytes() - previous_bytes;
 }
 
 lldb::ByteOrder Opcode::GetDataByteOrder() const {


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