f3b5bf3eb7
The formatter was requesting an unsigned integer from the ValueObject, but CFAbsoluteTime is a signed double, so in the NSDate test the formatter actually just printed the 'error value' date which is the Cocoa epoch. This started failing after the recent Scalar changes. This patch just changes the logic to use a signed value which fits to the data we try to read and avoids this issue.
295 lines
8.8 KiB
C++
295 lines
8.8 KiB
C++
//===-- CF.cpp ------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "CF.h"
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#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/Core/ValueObjectConstResult.h"
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#include "lldb/DataFormatters/FormattersHelpers.h"
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#include "lldb/Target/Language.h"
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#include "lldb/Target/StackFrame.h"
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#include "lldb/Target/Target.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/Status.h"
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#include "lldb/Utility/Stream.h"
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#include "Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::formatters;
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bool lldb_private::formatters::CFAbsoluteTimeSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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time_t epoch = GetOSXEpoch();
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epoch = epoch + (time_t)valobj.GetValueAsSigned(0);
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tm *tm_date = localtime(&epoch);
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if (!tm_date)
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return false;
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std::string buffer(1024, 0);
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if (strftime(&buffer[0], 1023, "%Z", tm_date) == 0)
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return false;
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stream.Printf("%04d-%02d-%02d %02d:%02d:%02d %s", tm_date->tm_year + 1900,
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tm_date->tm_mon + 1, tm_date->tm_mday, tm_date->tm_hour,
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tm_date->tm_min, tm_date->tm_sec, buffer.c_str());
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return true;
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}
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bool lldb_private::formatters::CFBagSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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static ConstString g_TypeHint("CFBag");
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor.get() || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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uint32_t count = 0;
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bool is_type_ok = false; // check to see if this is a CFBag we know about
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if (descriptor->IsCFType()) {
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ConstString type_name(valobj.GetTypeName());
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static ConstString g___CFBag("__CFBag");
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static ConstString g_conststruct__CFBag("const struct __CFBag");
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if (type_name == g___CFBag || type_name == g_conststruct__CFBag) {
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if (valobj.IsPointerType())
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is_type_ok = true;
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}
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}
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if (is_type_ok) {
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lldb::addr_t offset = 2 * ptr_size + 4 + valobj_addr;
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Status error;
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count = process_sp->ReadUnsignedIntegerFromMemory(offset, 4, 0, error);
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if (error.Fail())
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return false;
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} else
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return false;
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(options.GetLanguage())) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s\"%u value%s\"%s", prefix.c_str(), count,
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(count == 1 ? "" : "s"), suffix.c_str());
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return true;
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}
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bool lldb_private::formatters::CFBitVectorSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor.get() || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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uint32_t count = 0;
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bool is_type_ok = false; // check to see if this is a CFBag we know about
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if (descriptor->IsCFType()) {
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ConstString type_name(valobj.GetTypeName());
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if (type_name == "__CFMutableBitVector" || type_name == "__CFBitVector" ||
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type_name == "CFMutableBitVectorRef" || type_name == "CFBitVectorRef") {
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if (valobj.IsPointerType())
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is_type_ok = true;
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}
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}
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if (!is_type_ok)
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return false;
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Status error;
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count = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + 2 * ptr_size,
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ptr_size, 0, error);
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if (error.Fail())
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return false;
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uint64_t num_bytes = count / 8 + ((count & 7) ? 1 : 0);
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addr_t data_ptr = process_sp->ReadPointerFromMemory(
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valobj_addr + 2 * ptr_size + 2 * ptr_size, error);
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if (error.Fail())
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return false;
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// make sure we do not try to read huge amounts of data
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if (num_bytes > 1024)
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num_bytes = 1024;
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DataBufferSP buffer_sp(new DataBufferHeap(num_bytes, 0));
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num_bytes =
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process_sp->ReadMemory(data_ptr, buffer_sp->GetBytes(), num_bytes, error);
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if (error.Fail() || num_bytes == 0)
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return false;
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uint8_t *bytes = buffer_sp->GetBytes();
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for (uint64_t byte_idx = 0; byte_idx < num_bytes - 1; byte_idx++) {
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uint8_t byte = bytes[byte_idx];
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bool bit0 = (byte & 1) == 1;
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bool bit1 = (byte & 2) == 2;
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bool bit2 = (byte & 4) == 4;
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bool bit3 = (byte & 8) == 8;
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bool bit4 = (byte & 16) == 16;
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bool bit5 = (byte & 32) == 32;
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bool bit6 = (byte & 64) == 64;
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bool bit7 = (byte & 128) == 128;
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stream.Printf("%c%c%c%c %c%c%c%c ", (bit7 ? '1' : '0'), (bit6 ? '1' : '0'),
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(bit5 ? '1' : '0'), (bit4 ? '1' : '0'), (bit3 ? '1' : '0'),
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(bit2 ? '1' : '0'), (bit1 ? '1' : '0'), (bit0 ? '1' : '0'));
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count -= 8;
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}
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{
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// print the last byte ensuring we do not print spurious bits
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uint8_t byte = bytes[num_bytes - 1];
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bool bit0 = (byte & 1) == 1;
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bool bit1 = (byte & 2) == 2;
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bool bit2 = (byte & 4) == 4;
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bool bit3 = (byte & 8) == 8;
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bool bit4 = (byte & 16) == 16;
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bool bit5 = (byte & 32) == 32;
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bool bit6 = (byte & 64) == 64;
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bool bit7 = (byte & 128) == 128;
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if (count) {
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stream.Printf("%c", bit7 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit6 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit5 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit4 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit3 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit2 ? '1' : '0');
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count -= 1;
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}
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if (count) {
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stream.Printf("%c", bit1 ? '1' : '0');
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count -= 1;
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}
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if (count)
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stream.Printf("%c", bit0 ? '1' : '0');
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}
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return true;
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}
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bool lldb_private::formatters::CFBinaryHeapSummaryProvider(
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ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
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static ConstString g_TypeHint("CFBinaryHeap");
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ProcessSP process_sp = valobj.GetProcessSP();
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if (!process_sp)
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return false;
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ObjCLanguageRuntime *runtime = ObjCLanguageRuntime::Get(*process_sp);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(
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runtime->GetClassDescriptor(valobj));
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if (!descriptor.get() || !descriptor->IsValid())
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return false;
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uint32_t ptr_size = process_sp->GetAddressByteSize();
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lldb::addr_t valobj_addr = valobj.GetValueAsUnsigned(0);
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if (!valobj_addr)
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return false;
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uint32_t count = 0;
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bool is_type_ok =
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false; // check to see if this is a CFBinaryHeap we know about
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if (descriptor->IsCFType()) {
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ConstString type_name(valobj.GetTypeName());
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static ConstString g___CFBinaryHeap("__CFBinaryHeap");
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static ConstString g_conststruct__CFBinaryHeap(
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"const struct __CFBinaryHeap");
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static ConstString g_CFBinaryHeapRef("CFBinaryHeapRef");
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if (type_name == g___CFBinaryHeap ||
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type_name == g_conststruct__CFBinaryHeap ||
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type_name == g_CFBinaryHeapRef) {
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if (valobj.IsPointerType())
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is_type_ok = true;
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}
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}
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if (is_type_ok) {
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lldb::addr_t offset = 2 * ptr_size + valobj_addr;
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Status error;
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count = process_sp->ReadUnsignedIntegerFromMemory(offset, 4, 0, error);
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if (error.Fail())
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return false;
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} else
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return false;
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std::string prefix, suffix;
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if (Language *language = Language::FindPlugin(options.GetLanguage())) {
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if (!language->GetFormatterPrefixSuffix(valobj, g_TypeHint, prefix,
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suffix)) {
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prefix.clear();
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suffix.clear();
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}
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}
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stream.Printf("%s\"%u item%s\"%s", prefix.c_str(), count,
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(count == 1 ? "" : "s"), suffix.c_str());
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return true;
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}
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