580 lines
18 KiB
C++
580 lines
18 KiB
C++
//===-- NSDictionary.cpp ------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/lldb-python.h"
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#include "lldb/DataFormatters/CXXFormatterFunctions.h"
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#include "lldb/Core/DataBufferHeap.h"
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#include "lldb/Core/Error.h"
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#include "lldb/Core/Stream.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/Host/Endian.h"
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#include "lldb/Symbol/ClangASTContext.h"
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#include "lldb/Target/ObjCLanguageRuntime.h"
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#include "lldb/Target/Target.h"
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#include "clang/AST/DeclCXX.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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static ClangASTType
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GetLLDBNSPairType (TargetSP target_sp)
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{
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ClangASTType clang_type = ClangASTType();
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ClangASTContext *target_ast_context = target_sp->GetScratchClangASTContext();
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if (!target_ast_context)
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return clang_type;
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const char* type_name = "__lldb_autogen_nspair";
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clang::IdentifierInfo &myIdent = target_ast_context->getASTContext()->Idents.get(type_name);
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clang::DeclarationName myName = target_ast_context->getASTContext()->DeclarationNames.getIdentifier(&myIdent);
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clang::DeclContext::lookup_const_result result = target_ast_context->getASTContext()->getTranslationUnitDecl()->lookup(myName);
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clang_type_t opaque_type = NULL;
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for (clang::NamedDecl *named_decl : result)
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{
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if (const clang::CXXRecordDecl *record_decl = llvm::dyn_cast<clang::CXXRecordDecl>(named_decl))
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{
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opaque_type = clang::QualType(record_decl->getTypeForDecl(), 0).getAsOpaquePtr();
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break;
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}
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else
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{
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// somebody else (the user?) has defined a type with the magic name already - fail!!!
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return clang_type;
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}
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}
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if (!opaque_type)
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{
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opaque_type = target_ast_context->CreateRecordType(NULL, lldb::eAccessPublic, type_name, clang::TTK_Struct, lldb::eLanguageTypeC);
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if (!opaque_type)
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return clang_type;
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target_ast_context->StartTagDeclarationDefinition(opaque_type);
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target_ast_context->AddFieldToRecordType(opaque_type, "key", target_ast_context->GetBuiltInType_objc_id(), lldb::eAccessPublic, 0);
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target_ast_context->AddFieldToRecordType(opaque_type, "value", target_ast_context->GetBuiltInType_objc_id(), lldb::eAccessPublic, 0);
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target_ast_context->CompleteTagDeclarationDefinition(opaque_type);
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}
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clang_type.SetClangType(target_ast_context->getASTContext(), opaque_type);
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return clang_type;
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}
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template<bool name_entries>
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bool
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lldb_private::formatters::NSDictionarySummaryProvider (ValueObject& valobj, Stream& stream)
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{
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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*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC);
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if (!runtime)
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return false;
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(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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bool is_64bit = (ptr_size == 8);
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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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uint64_t value = 0;
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const char* class_name = descriptor->GetClassName().GetCString();
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if (!class_name || !*class_name)
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return false;
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if (!strcmp(class_name,"__NSDictionaryI"))
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{
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Error error;
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value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size, ptr_size, 0, error);
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if (error.Fail())
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return false;
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value &= (is_64bit ? ~0xFC00000000000000UL : ~0xFC000000U);
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}
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else if (!strcmp(class_name,"__NSDictionaryM"))
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{
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Error error;
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value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + ptr_size, ptr_size, 0, error);
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if (error.Fail())
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return false;
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value &= (is_64bit ? ~0xFC00000000000000UL : ~0xFC000000U);
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}
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/*else if (!strcmp(class_name,"__NSCFDictionary"))
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{
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Error error;
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value = process_sp->ReadUnsignedIntegerFromMemory(valobj_addr + (is_64bit ? 20 : 12), 4, 0, error);
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if (error.Fail())
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return false;
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if (is_64bit)
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value &= ~0x0f1f000000000000UL;
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}*/
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else
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{
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if (!ExtractValueFromObjCExpression(valobj, "int", "count", value))
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return false;
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}
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stream.Printf("%s%" PRIu64 " %s%s",
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(name_entries ? "@\"" : ""),
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value,
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(name_entries ? (value == 1 ? "entry" : "entries") : (value == 1 ? "key/value pair" : "key/value pairs")),
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(name_entries ? "\"" : ""));
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return true;
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}
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SyntheticChildrenFrontEnd* lldb_private::formatters::NSDictionarySyntheticFrontEndCreator (CXXSyntheticChildren*, lldb::ValueObjectSP valobj_sp)
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{
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lldb::ProcessSP process_sp (valobj_sp->GetProcessSP());
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if (!process_sp)
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return NULL;
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ObjCLanguageRuntime *runtime = (ObjCLanguageRuntime*)process_sp->GetLanguageRuntime(lldb::eLanguageTypeObjC);
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if (!runtime)
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return NULL;
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if (!valobj_sp->IsPointerType())
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{
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Error error;
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valobj_sp = valobj_sp->AddressOf(error);
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if (error.Fail() || !valobj_sp)
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return NULL;
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}
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ObjCLanguageRuntime::ClassDescriptorSP descriptor(runtime->GetClassDescriptor(*valobj_sp.get()));
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if (!descriptor.get() || !descriptor->IsValid())
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return NULL;
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const char* class_name = descriptor->GetClassName().GetCString();
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if (!class_name || !*class_name)
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return NULL;
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if (!strcmp(class_name,"__NSDictionaryI"))
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{
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return (new NSDictionaryISyntheticFrontEnd(valobj_sp));
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}
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else if (!strcmp(class_name,"__NSDictionaryM"))
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{
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return (new NSDictionaryMSyntheticFrontEnd(valobj_sp));
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}
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else
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{
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return (new NSDictionaryCodeRunningSyntheticFrontEnd(valobj_sp));
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}
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}
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::NSDictionaryCodeRunningSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
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SyntheticChildrenFrontEnd(*valobj_sp.get())
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{}
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size_t
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::CalculateNumChildren ()
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{
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uint64_t count = 0;
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if (ExtractValueFromObjCExpression(m_backend, "int", "count", count))
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return count;
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return 0;
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}
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lldb::ValueObjectSP
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::GetChildAtIndex (size_t idx)
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{
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StreamString idx_name;
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idx_name.Printf("[%zu]",idx);
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StreamString key_fetcher_expr;
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key_fetcher_expr.Printf("(id)[(NSArray*)[(id)0x%" PRIx64 " allKeys] objectAtIndex:%zu]",m_backend.GetPointerValue(),idx);
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StreamString value_fetcher_expr;
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value_fetcher_expr.Printf("(id)[(id)0x%" PRIx64 " objectForKey:(%s)]",m_backend.GetPointerValue(),key_fetcher_expr.GetData());
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StreamString object_fetcher_expr;
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object_fetcher_expr.Printf("struct __lldb_autogen_nspair { id key; id value; } _lldb_valgen_item; _lldb_valgen_item.key = %s; _lldb_valgen_item.value = %s; _lldb_valgen_item;",key_fetcher_expr.GetData(),value_fetcher_expr.GetData());
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lldb::ValueObjectSP child_sp;
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m_backend.GetTargetSP()->EvaluateExpression(object_fetcher_expr.GetData(), m_backend.GetFrameSP().get(), child_sp,
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EvaluateExpressionOptions().SetKeepInMemory(true));
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if (child_sp)
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child_sp->SetName(ConstString(idx_name.GetData()));
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return child_sp;
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}
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bool
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::Update()
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{
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return false;
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}
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bool
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::MightHaveChildren ()
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{
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return true;
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}
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size_t
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
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{
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return 0;
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}
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lldb_private::formatters::NSDictionaryCodeRunningSyntheticFrontEnd::~NSDictionaryCodeRunningSyntheticFrontEnd ()
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{}
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::NSDictionaryISyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
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SyntheticChildrenFrontEnd(*valobj_sp.get()),
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m_exe_ctx_ref(),
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m_ptr_size(8),
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m_order(lldb::eByteOrderInvalid),
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m_data_32(NULL),
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m_data_64(NULL),
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m_pair_type()
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{
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}
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::~NSDictionaryISyntheticFrontEnd ()
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{
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delete m_data_32;
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m_data_32 = NULL;
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delete m_data_64;
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m_data_64 = NULL;
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}
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size_t
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
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{
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const char* item_name = name.GetCString();
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uint32_t idx = ExtractIndexFromString(item_name);
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if (idx < UINT32_MAX && idx >= CalculateNumChildren())
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return UINT32_MAX;
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return idx;
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}
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size_t
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::CalculateNumChildren ()
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{
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if (!m_data_32 && !m_data_64)
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return 0;
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return (m_data_32 ? m_data_32->_used : m_data_64->_used);
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}
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bool
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::Update()
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{
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m_children.clear();
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delete m_data_32;
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m_data_32 = NULL;
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delete m_data_64;
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m_data_64 = NULL;
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m_ptr_size = 0;
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ValueObjectSP valobj_sp = m_backend.GetSP();
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if (!valobj_sp)
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return false;
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m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
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Error error;
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error.Clear();
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lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
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if (!process_sp)
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return false;
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m_ptr_size = process_sp->GetAddressByteSize();
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m_order = process_sp->GetByteOrder();
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uint64_t data_location = valobj_sp->GetValueAsUnsigned(0) + m_ptr_size;
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if (m_ptr_size == 4)
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{
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m_data_32 = new DataDescriptor_32();
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process_sp->ReadMemory (data_location, m_data_32, sizeof(DataDescriptor_32), error);
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}
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else
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{
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m_data_64 = new DataDescriptor_64();
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process_sp->ReadMemory (data_location, m_data_64, sizeof(DataDescriptor_64), error);
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}
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if (error.Fail())
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return false;
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m_data_ptr = data_location + m_ptr_size;
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return false;
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}
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bool
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::MightHaveChildren ()
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{
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return true;
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}
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lldb::ValueObjectSP
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lldb_private::formatters::NSDictionaryISyntheticFrontEnd::GetChildAtIndex (size_t idx)
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{
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uint32_t num_children = CalculateNumChildren();
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if (idx >= num_children)
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return lldb::ValueObjectSP();
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if (m_children.empty())
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{
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// do the scan phase
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lldb::addr_t key_at_idx = 0, val_at_idx = 0;
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uint32_t tries = 0;
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uint32_t test_idx = 0;
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while(tries < num_children)
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{
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key_at_idx = m_data_ptr + (2*test_idx * m_ptr_size);
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val_at_idx = key_at_idx + m_ptr_size;
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ProcessSP process_sp = m_exe_ctx_ref.GetProcessSP();
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if (!process_sp)
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return lldb::ValueObjectSP();
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Error error;
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key_at_idx = process_sp->ReadPointerFromMemory(key_at_idx, error);
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if (error.Fail())
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return lldb::ValueObjectSP();
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val_at_idx = process_sp->ReadPointerFromMemory(val_at_idx, error);
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if (error.Fail())
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return lldb::ValueObjectSP();
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test_idx++;
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if (!key_at_idx || !val_at_idx)
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continue;
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tries++;
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DictionaryItemDescriptor descriptor = {key_at_idx,val_at_idx,lldb::ValueObjectSP()};
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m_children.push_back(descriptor);
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}
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}
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if (idx >= m_children.size()) // should never happen
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return lldb::ValueObjectSP();
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DictionaryItemDescriptor &dict_item = m_children[idx];
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if (!dict_item.valobj_sp)
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{
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if (!m_pair_type.IsValid())
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{
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TargetSP target_sp(m_backend.GetTargetSP());
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if (!target_sp)
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return ValueObjectSP();
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m_pair_type = GetLLDBNSPairType(target_sp);
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}
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if (!m_pair_type.IsValid())
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return ValueObjectSP();
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DataBufferSP buffer_sp(new DataBufferHeap(2*m_ptr_size,0));
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if (m_ptr_size == 8)
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{
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uint64_t *data_ptr = (uint64_t *)buffer_sp->GetBytes();
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*data_ptr = dict_item.key_ptr;
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*(data_ptr+1) = dict_item.val_ptr;
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}
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else
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{
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uint32_t *data_ptr = (uint32_t *)buffer_sp->GetBytes();
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*data_ptr = dict_item.key_ptr;
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*(data_ptr+1) = dict_item.val_ptr;
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}
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StreamString idx_name;
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idx_name.Printf("[%zu]",idx);
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DataExtractor data(buffer_sp, m_order, m_ptr_size);
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dict_item.valobj_sp = ValueObject::CreateValueObjectFromData(idx_name.GetData(), data, m_exe_ctx_ref, m_pair_type);
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}
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return dict_item.valobj_sp;
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}
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::NSDictionaryMSyntheticFrontEnd (lldb::ValueObjectSP valobj_sp) :
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SyntheticChildrenFrontEnd(*valobj_sp.get()),
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m_exe_ctx_ref(),
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m_ptr_size(8),
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m_order(lldb::eByteOrderInvalid),
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m_data_32(NULL),
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m_data_64(NULL),
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m_pair_type()
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{
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}
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::~NSDictionaryMSyntheticFrontEnd ()
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{
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delete m_data_32;
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m_data_32 = NULL;
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delete m_data_64;
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m_data_64 = NULL;
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}
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size_t
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::GetIndexOfChildWithName (const ConstString &name)
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{
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const char* item_name = name.GetCString();
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uint32_t idx = ExtractIndexFromString(item_name);
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if (idx < UINT32_MAX && idx >= CalculateNumChildren())
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return UINT32_MAX;
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return idx;
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}
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size_t
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::CalculateNumChildren ()
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{
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if (!m_data_32 && !m_data_64)
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return 0;
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return (m_data_32 ? m_data_32->_used : m_data_64->_used);
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}
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bool
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::Update()
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{
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m_children.clear();
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ValueObjectSP valobj_sp = m_backend.GetSP();
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m_ptr_size = 0;
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delete m_data_32;
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m_data_32 = NULL;
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delete m_data_64;
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m_data_64 = NULL;
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if (!valobj_sp)
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return false;
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m_exe_ctx_ref = valobj_sp->GetExecutionContextRef();
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Error error;
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error.Clear();
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lldb::ProcessSP process_sp(valobj_sp->GetProcessSP());
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if (!process_sp)
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return false;
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m_ptr_size = process_sp->GetAddressByteSize();
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m_order = process_sp->GetByteOrder();
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uint64_t data_location = valobj_sp->GetValueAsUnsigned(0) + m_ptr_size;
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if (m_ptr_size == 4)
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{
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m_data_32 = new DataDescriptor_32();
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process_sp->ReadMemory (data_location, m_data_32, sizeof(DataDescriptor_32), error);
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}
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else
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{
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m_data_64 = new DataDescriptor_64();
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process_sp->ReadMemory (data_location, m_data_64, sizeof(DataDescriptor_64), error);
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}
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if (error.Fail())
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return false;
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return false;
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}
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bool
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::MightHaveChildren ()
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{
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return true;
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}
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lldb::ValueObjectSP
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lldb_private::formatters::NSDictionaryMSyntheticFrontEnd::GetChildAtIndex (size_t idx)
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{
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lldb::addr_t m_keys_ptr = (m_data_32 ? m_data_32->_keys_addr : m_data_64->_keys_addr);
|
|
lldb::addr_t m_values_ptr = (m_data_32 ? m_data_32->_objs_addr : m_data_64->_objs_addr);
|
|
|
|
uint32_t num_children = CalculateNumChildren();
|
|
|
|
if (idx >= num_children)
|
|
return lldb::ValueObjectSP();
|
|
|
|
if (m_children.empty())
|
|
{
|
|
// do the scan phase
|
|
lldb::addr_t key_at_idx = 0, val_at_idx = 0;
|
|
|
|
uint32_t tries = 0;
|
|
uint32_t test_idx = 0;
|
|
|
|
while(tries < num_children)
|
|
{
|
|
key_at_idx = m_keys_ptr + (test_idx * m_ptr_size);
|
|
val_at_idx = m_values_ptr + (test_idx * m_ptr_size);;
|
|
ProcessSP process_sp = m_exe_ctx_ref.GetProcessSP();
|
|
if (!process_sp)
|
|
return lldb::ValueObjectSP();
|
|
Error error;
|
|
key_at_idx = process_sp->ReadPointerFromMemory(key_at_idx, error);
|
|
if (error.Fail())
|
|
return lldb::ValueObjectSP();
|
|
val_at_idx = process_sp->ReadPointerFromMemory(val_at_idx, error);
|
|
if (error.Fail())
|
|
return lldb::ValueObjectSP();
|
|
|
|
test_idx++;
|
|
|
|
if (!key_at_idx || !val_at_idx)
|
|
continue;
|
|
tries++;
|
|
|
|
DictionaryItemDescriptor descriptor = {key_at_idx,val_at_idx,lldb::ValueObjectSP()};
|
|
|
|
m_children.push_back(descriptor);
|
|
}
|
|
}
|
|
|
|
if (idx >= m_children.size()) // should never happen
|
|
return lldb::ValueObjectSP();
|
|
|
|
DictionaryItemDescriptor &dict_item = m_children[idx];
|
|
if (!dict_item.valobj_sp)
|
|
{
|
|
if (!m_pair_type.IsValid())
|
|
{
|
|
TargetSP target_sp(m_backend.GetTargetSP());
|
|
if (!target_sp)
|
|
return ValueObjectSP();
|
|
m_pair_type = GetLLDBNSPairType(target_sp);
|
|
}
|
|
if (!m_pair_type.IsValid())
|
|
return ValueObjectSP();
|
|
|
|
DataBufferSP buffer_sp(new DataBufferHeap(2*m_ptr_size,0));
|
|
|
|
if (m_ptr_size == 8)
|
|
{
|
|
uint64_t *data_ptr = (uint64_t *)buffer_sp->GetBytes();
|
|
*data_ptr = dict_item.key_ptr;
|
|
*(data_ptr+1) = dict_item.val_ptr;
|
|
}
|
|
else
|
|
{
|
|
uint32_t *data_ptr = (uint32_t *)buffer_sp->GetBytes();
|
|
*data_ptr = dict_item.key_ptr;
|
|
*(data_ptr+1) = dict_item.val_ptr;
|
|
}
|
|
|
|
StreamString idx_name;
|
|
idx_name.Printf("[%zu]",idx);
|
|
DataExtractor data(buffer_sp, m_order, m_ptr_size);
|
|
dict_item.valobj_sp = ValueObject::CreateValueObjectFromData(idx_name.GetData(), data, m_exe_ctx_ref, m_pair_type);
|
|
}
|
|
return dict_item.valobj_sp;
|
|
}
|
|
|
|
template bool
|
|
lldb_private::formatters::NSDictionarySummaryProvider<true> (ValueObject&, Stream&) ;
|
|
|
|
template bool
|
|
lldb_private::formatters::NSDictionarySummaryProvider<false> (ValueObject&, Stream&) ;
|