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llvm-project/lldb/source/Expression/ExpressionSourceCode.cpp
Saleem Abdulrasool 329860e495 Revert r258546. 
Seems that the patch was rebased on top of another change which obsoleted the
change but wasnt caught.

Thanks to nbjoerg for pointing this out!

llvm-svn: 258821
2016-01-26 17:43:48 +00:00

345 lines
12 KiB
C++
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//===-- ExpressionSourceCode.cpp --------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/Core/StreamString.h"
#include "Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.h"
#include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/DebugMacros.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/TypeSystem.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
using namespace lldb_private;
const char *
ExpressionSourceCode::g_expression_prefix = R"(
#ifndef NULL
#define NULL (__null)
#endif
#ifndef Nil
#define Nil (__null)
#endif
#ifndef nil
#define nil (__null)
#endif
#ifndef YES
#define YES ((BOOL)1)
#endif
#ifndef NO
#define NO ((BOOL)0)
#endif
typedef __INT8_TYPE__ int8_t;
typedef __UINT8_TYPE__ uint8_t;
typedef __INT16_TYPE__ int16_t;
typedef __UINT16_TYPE__ uint16_t;
typedef __INT32_TYPE__ int32_t;
typedef __UINT32_TYPE__ uint32_t;
typedef __INT64_TYPE__ int64_t;
typedef __UINT64_TYPE__ uint64_t;
typedef __INTPTR_TYPE__ intptr_t;
typedef __UINTPTR_TYPE__ uintptr_t;
typedef __SIZE_TYPE__ size_t;
typedef __PTRDIFF_TYPE__ ptrdiff_t;
typedef unsigned short unichar;
extern "C"
{
int printf(const char * __restrict, ...);
}
)";
namespace {
class AddMacroState
{
enum State
{
CURRENT_FILE_NOT_YET_PUSHED,
CURRENT_FILE_PUSHED,
CURRENT_FILE_POPPED
};
public:
AddMacroState(const FileSpec &current_file, const uint32_t current_file_line)
: m_state(CURRENT_FILE_NOT_YET_PUSHED),
m_current_file(current_file),
m_current_file_line(current_file_line)
{ }
void
StartFile(const FileSpec &file)
{
m_file_stack.push_back(file);
if (file == m_current_file)
m_state = CURRENT_FILE_PUSHED;
}
void
EndFile()
{
if (m_file_stack.size() == 0)
return;
FileSpec old_top = m_file_stack.back();
m_file_stack.pop_back();
if (old_top == m_current_file)
m_state = CURRENT_FILE_POPPED;
}
// An entry is valid if it occurs before the current line in
// the current file.
bool
IsValidEntry(uint32_t line)
{
switch (m_state)
{
case CURRENT_FILE_NOT_YET_PUSHED:
return true;
case CURRENT_FILE_PUSHED:
// If we are in file included in the current file,
// the entry should be added.
if (m_file_stack.back() != m_current_file)
return true;
if (line >= m_current_file_line)
return false;
else
return true;
default:
return false;
}
}
private:
std::vector<FileSpec> m_file_stack;
State m_state;
FileSpec m_current_file;
uint32_t m_current_file_line;
};
} // anonymous namespace
static void
AddMacros(const DebugMacros *dm, CompileUnit *comp_unit, AddMacroState &state, StreamString &stream)
{
if (dm == nullptr)
return;
for (size_t i = 0; i < dm->GetNumMacroEntries(); i++)
{
const DebugMacroEntry &entry = dm->GetMacroEntryAtIndex(i);
uint32_t line;
switch (entry.GetType())
{
case DebugMacroEntry::DEFINE:
if (state.IsValidEntry(entry.GetLineNumber()))
stream.Printf("#define %s\n", entry.GetMacroString().AsCString());
else
return;
break;
case DebugMacroEntry::UNDEF:
if (state.IsValidEntry(entry.GetLineNumber()))
stream.Printf("#undef %s\n", entry.GetMacroString().AsCString());
else
return;
break;
case DebugMacroEntry::START_FILE:
line = entry.GetLineNumber();
if (state.IsValidEntry(line))
state.StartFile(entry.GetFileSpec(comp_unit));
else
return;
break;
case DebugMacroEntry::END_FILE:
state.EndFile();
break;
case DebugMacroEntry::INDIRECT:
AddMacros(entry.GetIndirectDebugMacros(), comp_unit, state, stream);
break;
default:
// This is an unknown/invalid entry. Ignore.
break;
}
}
}
bool ExpressionSourceCode::GetText (std::string &text, lldb::LanguageType wrapping_language, bool const_object, bool static_method, ExecutionContext &exe_ctx) const
{
const char *target_specific_defines = "typedef signed char BOOL;\n";
std::string module_macros;
if (Target *target = exe_ctx.GetTargetPtr())
{
if (target->GetArchitecture().GetMachine() == llvm::Triple::aarch64)
{
target_specific_defines = "typedef bool BOOL;\n";
}
if (target->GetArchitecture().GetMachine() == llvm::Triple::x86_64)
{
if (lldb::PlatformSP platform_sp = target->GetPlatform())
{
static ConstString g_platform_ios_simulator ("ios-simulator");
if (platform_sp->GetPluginName() == g_platform_ios_simulator)
{
target_specific_defines = "typedef bool BOOL;\n";
}
}
}
if (ClangModulesDeclVendor *decl_vendor = target->GetClangModulesDeclVendor())
{
ClangPersistentVariables *persistent_vars = llvm::cast<ClangPersistentVariables>(target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC));
const ClangModulesDeclVendor::ModuleVector &hand_imported_modules = persistent_vars->GetHandLoadedClangModules();
ClangModulesDeclVendor::ModuleVector modules_for_macros;
for (ClangModulesDeclVendor::ModuleID module : hand_imported_modules)
{
modules_for_macros.push_back(module);
}
if (target->GetEnableAutoImportClangModules())
{
if (StackFrame *frame = exe_ctx.GetFramePtr())
{
if (Block *block = frame->GetFrameBlock())
{
SymbolContext sc;
block->CalculateSymbolContext(&sc);
if (sc.comp_unit)
{
StreamString error_stream;
decl_vendor->AddModulesForCompileUnit(*sc.comp_unit, modules_for_macros, error_stream);
}
}
}
}
decl_vendor->ForEachMacro(modules_for_macros, [&module_macros] (const std::string &expansion) -> bool {
module_macros.append(expansion);
module_macros.append("\n");
return false;
});
}
}
StreamString debug_macros_stream;
if (StackFrame *frame = exe_ctx.GetFramePtr())
{
const SymbolContext &sc = frame->GetSymbolContext(
lldb:: eSymbolContextCompUnit | lldb::eSymbolContextLineEntry);
if (sc.comp_unit && sc.line_entry.IsValid())
{
DebugMacros *dm = sc.comp_unit->GetDebugMacros();
if (dm)
{
AddMacroState state(sc.line_entry.file, sc.line_entry.line);
AddMacros(dm, sc.comp_unit, state, debug_macros_stream);
}
}
}
if (m_wrap)
{
switch (wrapping_language)
{
default:
return false;
case lldb::eLanguageTypeC:
case lldb::eLanguageTypeC_plus_plus:
case lldb::eLanguageTypeObjC:
break;
}
StreamString wrap_stream;
wrap_stream.Printf("%s\n%s\n%s\n%s\n%s\n",
module_macros.c_str(),
debug_macros_stream.GetData(),
g_expression_prefix,
target_specific_defines,
m_prefix.c_str());
switch (wrapping_language)
{
default:
break;
case lldb::eLanguageTypeC:
wrap_stream.Printf("void \n"
"%s(void *$__lldb_arg) \n"
"{ \n"
" %s; \n"
"} \n",
m_name.c_str(),
m_body.c_str());
break;
case lldb::eLanguageTypeC_plus_plus:
wrap_stream.Printf("void \n"
"$__lldb_class::%s(void *$__lldb_arg) %s\n"
"{ \n"
" %s; \n"
"} \n",
m_name.c_str(),
(const_object ? "const" : ""),
m_body.c_str());
break;
case lldb::eLanguageTypeObjC:
if (static_method)
{
wrap_stream.Printf("@interface $__lldb_objc_class ($__lldb_category) \n"
"+(void)%s:(void *)$__lldb_arg; \n"
"@end \n"
"@implementation $__lldb_objc_class ($__lldb_category) \n"
"+(void)%s:(void *)$__lldb_arg \n"
"{ \n"
" %s; \n"
"} \n"
"@end \n",
m_name.c_str(),
m_name.c_str(),
m_body.c_str());
}
else
{
wrap_stream.Printf("@interface $__lldb_objc_class ($__lldb_category) \n"
"-(void)%s:(void *)$__lldb_arg; \n"
"@end \n"
"@implementation $__lldb_objc_class ($__lldb_category) \n"
"-(void)%s:(void *)$__lldb_arg \n"
"{ \n"
" %s; \n"
"} \n"
"@end \n",
m_name.c_str(),
m_name.c_str(),
m_body.c_str());
}
break;
}
text = wrap_stream.GetString();
}
else
{
text.append(m_body);
}
return true;
}
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