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Diffstat (limited to 'source/DataFormatters/CXXFormatterFunctions.cpp')
-rw-r--r--source/DataFormatters/CXXFormatterFunctions.cpp116
1 files changed, 106 insertions, 10 deletions
diff --git a/source/DataFormatters/CXXFormatterFunctions.cpp b/source/DataFormatters/CXXFormatterFunctions.cpp
index 136c8c51e660..ae5b35fd2b1c 100644
--- a/source/DataFormatters/CXXFormatterFunctions.cpp
+++ b/source/DataFormatters/CXXFormatterFunctions.cpp
@@ -20,8 +20,8 @@
#include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Host/Endian.h"
#include "lldb/Symbol/ClangASTContext.h"
-#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/Target.h"
+#include "lldb/Target/Thread.h"
#include <algorithm>
@@ -29,6 +29,23 @@ using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::formatters;
+StackFrame*
+lldb_private::formatters::GetViableFrame (ExecutionContext exe_ctx)
+{
+ StackFrame* frame = exe_ctx.GetFramePtr();
+ if (frame)
+ return frame;
+
+ Process* process = exe_ctx.GetProcessPtr();
+ if (!process)
+ return nullptr;
+
+ ThreadSP thread_sp(process->GetThreadList().GetSelectedThread());
+ if (thread_sp)
+ return thread_sp->GetSelectedFrame().get();
+ return nullptr;
+}
+
bool
lldb_private::formatters::ExtractValueFromObjCExpression (ValueObject &valobj,
const char* target_type,
@@ -44,7 +61,7 @@ lldb_private::formatters::ExtractValueFromObjCExpression (ValueObject &valobj,
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
- StackFrame* stack_frame = exe_ctx.GetFramePtr();
+ StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return false;
@@ -78,7 +95,7 @@ lldb_private::formatters::ExtractSummaryFromObjCExpression (ValueObject &valobj,
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
- StackFrame* stack_frame = exe_ctx.GetFramePtr();
+ StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return false;
@@ -116,7 +133,7 @@ lldb_private::formatters::CallSelectorOnObject (ValueObject &valobj,
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
- StackFrame* stack_frame = exe_ctx.GetFramePtr();
+ StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return valobj_sp;
@@ -153,7 +170,7 @@ lldb_private::formatters::CallSelectorOnObject (ValueObject &valobj,
ExecutionContext exe_ctx (valobj.GetExecutionContextRef());
lldb::ValueObjectSP result_sp;
Target* target = exe_ctx.GetTargetPtr();
- StackFrame* stack_frame = exe_ctx.GetFramePtr();
+ StackFrame* stack_frame = GetViableFrame(exe_ctx);
if (!target || !stack_frame)
return valobj_sp;
@@ -576,7 +593,11 @@ bool
lldb_private::formatters::Char16SummaryProvider (ValueObject& valobj, Stream& stream)
{
DataExtractor data;
- valobj.GetData(data);
+ Error error;
+ valobj.GetData(data, error);
+
+ if (error.Fail())
+ return false;
std::string value;
valobj.GetValueAsCString(lldb::eFormatUnicode16, value);
@@ -590,7 +611,11 @@ bool
lldb_private::formatters::Char32SummaryProvider (ValueObject& valobj, Stream& stream)
{
DataExtractor data;
- valobj.GetData(data);
+ Error error;
+ valobj.GetData(data, error);
+
+ if (error.Fail())
+ return false;
std::string value;
valobj.GetValueAsCString(lldb::eFormatUnicode32, value);
@@ -604,7 +629,11 @@ bool
lldb_private::formatters::WCharSummaryProvider (ValueObject& valobj, Stream& stream)
{
DataExtractor data;
- valobj.GetData(data);
+ Error error;
+ valobj.GetData(data, error);
+
+ if (error.Fail())
+ return false;
clang::ASTContext* ast = valobj.GetClangType().GetASTContext();
@@ -954,6 +983,61 @@ ReadAsciiBufferAndDumpToStream (lldb::addr_t location,
}
bool
+lldb_private::formatters::NSTaggedString_SummaryProvider (ObjCLanguageRuntime::ClassDescriptorSP descriptor, Stream& stream)
+{
+ if (!descriptor)
+ return false;
+ uint64_t len_bits = 0, data_bits = 0;
+ if (!descriptor->GetTaggedPointerInfo(&len_bits,&data_bits,nullptr))
+ return false;
+
+ static const int g_MaxNonBitmaskedLen = 7; //TAGGED_STRING_UNPACKED_MAXLEN
+ static const int g_SixbitMaxLen = 9;
+ static const int g_fiveBitMaxLen = 11;
+
+ static const char *sixBitToCharLookup = "eilotrm.apdnsIc ufkMShjTRxgC4013" "bDNvwyUL2O856P-B79AFKEWV_zGJ/HYX";
+
+ if (len_bits > g_fiveBitMaxLen)
+ return false;
+
+ // this is a fairly ugly trick - pretend that the numeric value is actually a char*
+ // this works under a few assumptions:
+ // little endian architecture
+ // sizeof(uint64_t) > g_MaxNonBitmaskedLen
+ if (len_bits <= g_MaxNonBitmaskedLen)
+ {
+ stream.Printf("@\"%s\"",(const char*)&data_bits);
+ return true;
+ }
+
+ // if the data is bitmasked, we need to actually process the bytes
+ uint8_t bitmask = 0;
+ uint8_t shift_offset = 0;
+
+ if (len_bits <= g_SixbitMaxLen)
+ {
+ bitmask = 0x03f;
+ shift_offset = 6;
+ }
+ else
+ {
+ bitmask = 0x01f;
+ shift_offset = 5;
+ }
+
+ std::vector<uint8_t> bytes;
+ bytes.resize(len_bits);
+ for (; len_bits > 0; data_bits >>= shift_offset, --len_bits)
+ {
+ uint8_t packed = data_bits & bitmask;
+ bytes.insert(bytes.begin(), sixBitToCharLookup[packed]);
+ }
+
+ stream.Printf("@\"%s\"",&bytes[0]);
+ return true;
+}
+
+bool
lldb_private::formatters::NSStringSummaryProvider (ValueObject& valobj, Stream& stream)
{
ProcessSP process_sp = valobj.GetProcessSP();
@@ -982,6 +1066,12 @@ lldb_private::formatters::NSStringSummaryProvider (ValueObject& valobj, Stream&
if (!class_name || !*class_name)
return false;
+ bool is_tagged_ptr = (0 == strcmp(class_name,"NSTaggedPointerString")) && descriptor->GetTaggedPointerInfo();
+ // for a tagged pointer, the descriptor has everything we need
+ if (is_tagged_ptr)
+ return NSTaggedString_SummaryProvider(descriptor, stream);
+
+ // if not a tagged pointer that we know about, try the normal route
uint64_t info_bits_location = valobj_addr + ptr_size;
if (process_sp->GetByteOrder() != lldb::eByteOrderLittle)
info_bits_location += 3;
@@ -1144,7 +1234,10 @@ lldb_private::formatters::NSAttributedStringSummaryProvider (ValueObject& valobj
if (!child_ptr_sp)
return false;
DataExtractor data;
- child_ptr_sp->GetData(data);
+ Error error;
+ child_ptr_sp->GetData(data, error);
+ if (error.Fail())
+ return false;
ValueObjectSP child_sp(child_ptr_sp->CreateValueObjectFromData("string_data", data, exe_ctx, type));
child_sp->GetValueAsUnsigned(0);
if (child_sp)
@@ -1218,7 +1311,10 @@ lldb_private::formatters::ObjCSELSummaryProvider (ValueObject& valobj, Stream& s
else
{
DataExtractor data;
- valobj.GetData(data);
+ Error error;
+ valobj.GetData(data, error);
+ if (error.Fail())
+ return false;
valobj_sp = ValueObject::CreateValueObjectFromData("text", data, exe_ctx, charstar);
}