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Differential D59040

Move ExpressionSourceCode.cpp -> ClangExpressionSourceCode.cpp
ClosedPublic

Authored by jingham on Mar 6 2019, 12:19 PM.

Details

Reviewers
shafik
Commits
rGea401ec7f402: Factor the clang specific parts of ExpressionSourceCode.{h,cpp} into the clang…
rL355560: Factor the clang specific parts of ExpressionSourceCode.{h,cpp} into the clang…
rLLDB355560: Factor the clang specific parts of ExpressionSourceCode.{h,cpp} into the clang…
Summary

ExpressionSourceCode.cpp is in source/Expressions - which should indicate that it is a generic part of the expression parser. In fact, almost everything it currently does is very Clang specific. This change factors out the clang specific bits into ClangExpressionSourceCode.cpp. It is an NFC change, but it will help to reduce conflicts in supporting other Expression Parsers (e.g. swift).

I am leaving ExpressionSourceCode.h in place even though at present it doesn't have much content. In the swift.org repository we have support for emitting debug information for compiled expressions - which requires saving out the expression text, and that is handled by this class. That's a sometimes handy feature. This change will make it easier to merge in that facility, though I'll do that as a separate commit.

Diff Detail

Repository
rLLDB LLDB

Event Timeline

jingham created this revision.Mar 6 2019, 12:19 PM
Herald added a project: Restricted Project. · View Herald TranscriptMar 6 2019, 12:19 PM
Herald added subscribers: lldb-commits, jdoerfert, teemperor and 4 others. · View Herald Transcript
jingham added a comment.Mar 6 2019, 12:30 PM

I forgot to sort the project file before making the diff. I'll do that on commit.

aprantl added inline comments.Mar 6 2019, 12:53 PM
source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
137

This else return doesn't do anything. Is it needed for swift-lldb? Otherwise I'd just delete it.

source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.h
2

Level 10 nitpick: can you delete a few - characters so this fits into 80 columns?

43

///

source/Plugins/ExpressionParser/Clang/ClangUtilityFunction.cpp
45

Optional: If we changed the interface to llvm::StringRef() we don't have to check for a nullptr.

shafik accepted this revision.Mar 6 2019, 1:01 PM

LGTM although there are some good comments by @aprantl

This revision is now accepted and ready to land.Mar 6 2019, 1:01 PM
jingham marked 3 inline comments as done.Mar 6 2019, 2:39 PM

I want to keep this commit simple so I'm leaving Adrian's substantial comments for a future commit.

source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp
137

This is not required for swift, this is all C code and is just a straight copy of what used to be in ExpressionSourceCode.cpp. It's just the way Sean wrote it. I would rather not add extra differences before merging this back to swift, but I've made a note to fix it once I get that done.

source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.h
2

I'll do that on checkin.

Closed by commit rLLDB355560: Factor the clang specific parts of ExpressionSourceCode.{h,cpp} into the clang… (authored by jingham). · Explain WhyMar 6 2019, 2:44 PM
This revision was automatically updated to reflect the committed changes.

Revision Contents

PathSize
include/
lldb/
Expression/
27 lines
lldb.xcodeproj/
10 lines
source/
Expression/
380 lines
1 line
1 line
8 lines
Plugins/
ExpressionParser/
Clang/
55 lines
380 lines
7 lines
8 lines

Diff 189597

include/lldb/Expression/ExpressionSourceCode.h

Show All 9 Lines
#define liblldb_ExpressionSourceCode_h #define liblldb_ExpressionSourceCode_h
#include "lldb/lldb-enumerations.h" #include "lldb/lldb-enumerations.h"
#include <string> #include <string>
namespace lldb_private { namespace lldb_private {
class ExecutionContext;
class ExpressionSourceCode { class ExpressionSourceCode {
public: public:
static const char *g_expression_prefix;
static ExpressionSourceCode *CreateWrapped(const char *prefix,
const char *body) {
return new ExpressionSourceCode("$__lldb_expr", prefix, body, true);
}
static ExpressionSourceCode *CreateUnwrapped(const char *name,
const char *body) {
return new ExpressionSourceCode(name, "", body, false);
}
bool NeedsWrapping() const { return m_wrap; } bool NeedsWrapping() const { return m_wrap; }
const char *GetName() const { return m_name.c_str(); } const char *GetName() const { return m_name.c_str(); }
bool GetText(std::string &text, lldb::LanguageType wrapping_language, protected:
bool static_method, ExecutionContext &exe_ctx,
bool add_locals) const;
// Given a string returned by GetText, find the beginning and end of the body
// passed to CreateWrapped. Return true if the bounds could be found. This
// will also work on text with FixItHints applied.
static bool GetOriginalBodyBounds(std::string transformed_text,
lldb::LanguageType wrapping_language,
size_t &start_loc, size_t &end_loc);
private:
ExpressionSourceCode(const char *name, const char *prefix, const char *body, ExpressionSourceCode(const char *name, const char *prefix, const char *body,
bool wrap) bool wrap)
: m_name(name), m_prefix(prefix), m_body(body), m_wrap(wrap) {} : m_name(name), m_prefix(prefix), m_body(body), m_wrap(wrap) {}
std::string m_name; std::string m_name;
std::string m_prefix; std::string m_prefix;
std::string m_body; std::string m_body;
bool m_wrap; bool m_wrap;
}; };
} // namespace lldb_private } // namespace lldb_private
#endif #endif

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▲ Show 20 Lines • Show All 3,602 Lines • ▼ Show 20 Lines 26BC7DBE10F1B78200F91463 /* Expression */ = {
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497C86C1122823F300B54702 /* ClangUtilityFunction.h */, 497C86C1122823F300B54702 /* ClangUtilityFunction.h */,
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49D7072811B5AD11001AD875 /* ClangASTSource.cpp */, 49D7072811B5AD11001AD875 /* ClangASTSource.cpp */,
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▲ Show 20 Lines • Show All 3,140 Lines • Show Last 20 Lines

source/Expression/ExpressionSourceCode.cpp

//===-- ExpressionSourceCode.cpp --------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Expression/ExpressionSourceCode.h"
#include "Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.h"
#include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/DebugMacros.h"
#include "lldb/Symbol/TypeSystem.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Language.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/StreamString.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, ...);
}
)";
static const char *c_start_marker = " /*LLDB_BODY_START*/\n ";
static const char *c_end_marker = ";\n /*LLDB_BODY_END*/\n";
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;
return line < m_current_file_line;
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;
}
}
}
static void AddLocalVariableDecls(const lldb::VariableListSP &var_list_sp,
StreamString &stream) {
for (size_t i = 0; i < var_list_sp->GetSize(); i++) {
lldb::VariableSP var_sp = var_list_sp->GetVariableAtIndex(i);
ConstString var_name = var_sp->GetName();
if (!var_name || var_name == ConstString("this") ||
var_name == ConstString(".block_descriptor"))
continue;
stream.Printf("using $__lldb_local_vars::%s;\n", var_name.AsCString());
}
}
bool ExpressionSourceCode::GetText(std::string &text,
lldb::LanguageType wrapping_language,
bool static_method,
ExecutionContext &exe_ctx,
bool add_locals) const {
const char *target_specific_defines = "typedef signed char BOOL;\n";
std::string module_macros;
Target *target = exe_ctx.GetTargetPtr();
if (target) {
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;
StreamString lldb_local_var_decls;
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 (add_locals) {
if (Language::LanguageIsCPlusPlus(frame->GetLanguage())) {
if (target->GetInjectLocalVariables(&exe_ctx)) {
lldb::VariableListSP var_list_sp =
frame->GetInScopeVariableList(false, true);
AddLocalVariableDecls(var_list_sp, lldb_local_var_decls);
}
}
}
}
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());
// First construct a tagged form of the user expression so we can find it
// later:
std::string tagged_body;
switch (wrapping_language) {
default:
tagged_body = m_body;
break;
case lldb::eLanguageTypeC:
case lldb::eLanguageTypeC_plus_plus:
case lldb::eLanguageTypeObjC:
tagged_body.append(c_start_marker);
tagged_body.append(m_body);
tagged_body.append(c_end_marker);
break;
}
switch (wrapping_language) {
default:
break;
case lldb::eLanguageTypeC:
wrap_stream.Printf("void \n"
"%s(void *$__lldb_arg) \n"
"{ \n"
" %s; \n"
"%s"
"} \n",
m_name.c_str(), lldb_local_var_decls.GetData(),
tagged_body.c_str());
break;
case lldb::eLanguageTypeC_plus_plus:
wrap_stream.Printf("void \n"
"$__lldb_class::%s(void *$__lldb_arg) \n"
"{ \n"
" %s; \n"
"%s"
"} \n",
m_name.c_str(), lldb_local_var_decls.GetData(),
tagged_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"
"@end \n",
m_name.c_str(), m_name.c_str(), tagged_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"
"@end \n",
m_name.c_str(), m_name.c_str(), tagged_body.c_str());
}
break;
}
text = wrap_stream.GetString();
} else {
text.append(m_body);
}
return true;
}
bool ExpressionSourceCode::GetOriginalBodyBounds(
std::string transformed_text, lldb::LanguageType wrapping_language,
size_t &start_loc, size_t &end_loc) {
const char *start_marker;
const char *end_marker;
switch (wrapping_language) {
default:
return false;
case lldb::eLanguageTypeC:
case lldb::eLanguageTypeC_plus_plus:
case lldb::eLanguageTypeObjC:
start_marker = c_start_marker;
end_marker = c_end_marker;
break;
}
start_loc = transformed_text.find(start_marker);
if (start_loc == std::string::npos)
return false;
start_loc += strlen(start_marker);
end_loc = transformed_text.find(end_marker);
return end_loc != std::string::npos;
}

source/Expression/LLVMUserExpression.cpp

//===-- LLVMUserExpression.cpp ----------------------------------*- C++ -*-===// //===-- LLVMUserExpression.cpp ----------------------------------*- C++ -*-===//
// //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information. // See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "lldb/Expression/LLVMUserExpression.h" #include "lldb/Expression/LLVMUserExpression.h"
#include "lldb/Core/Module.h" #include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h" #include "lldb/Core/StreamFile.h"
#include "lldb/Core/ValueObjectConstResult.h" #include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Expression/DiagnosticManager.h" #include "lldb/Expression/DiagnosticManager.h"
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/Expression/IRExecutionUnit.h" #include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Expression/IRInterpreter.h" #include "lldb/Expression/IRInterpreter.h"
#include "lldb/Expression/Materializer.h" #include "lldb/Expression/Materializer.h"
#include "lldb/Host/HostInfo.h" #include "lldb/Host/HostInfo.h"
#include "lldb/Symbol/Block.h" #include "lldb/Symbol/Block.h"
#include "lldb/Symbol/ClangASTContext.h" #include "lldb/Symbol/ClangASTContext.h"
#include "lldb/Symbol/ClangExternalASTSourceCommon.h" #include "lldb/Symbol/ClangExternalASTSourceCommon.h"
#include "lldb/Symbol/Function.h" #include "lldb/Symbol/Function.h"
▲ Show 20 Lines • Show All 347 Lines • Show Last 20 Lines

source/Expression/UserExpression.cpp

Show All 14 Lines
#include <map> #include <map>
#include <string> #include <string>
#include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h" #include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h"
#include "lldb/Core/Module.h" #include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h" #include "lldb/Core/StreamFile.h"
#include "lldb/Core/ValueObjectConstResult.h" #include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Expression/DiagnosticManager.h" #include "lldb/Expression/DiagnosticManager.h"
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/Expression/IRExecutionUnit.h" #include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Expression/IRInterpreter.h" #include "lldb/Expression/IRInterpreter.h"
#include "lldb/Expression/Materializer.h" #include "lldb/Expression/Materializer.h"
#include "lldb/Expression/UserExpression.h" #include "lldb/Expression/UserExpression.h"
#include "lldb/Host/HostInfo.h" #include "lldb/Host/HostInfo.h"
#include "lldb/Symbol/Block.h" #include "lldb/Symbol/Block.h"
#include "lldb/Symbol/Function.h" #include "lldb/Symbol/Function.h"
#include "lldb/Symbol/ObjectFile.h" #include "lldb/Symbol/ObjectFile.h"
▲ Show 20 Lines • Show All 369 Lines • Show Last 20 Lines

source/Expression/UtilityFunction.cpp

Show All 9 Lines
#if HAVE_SYS_TYPES_H #if HAVE_SYS_TYPES_H
#include <sys/types.h> #include <sys/types.h>
#endif #endif
#include "lldb/Core/Module.h" #include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h" #include "lldb/Core/StreamFile.h"
#include "lldb/Expression/DiagnosticManager.h" #include "lldb/Expression/DiagnosticManager.h"
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/Expression/FunctionCaller.h" #include "lldb/Expression/FunctionCaller.h"
#include "lldb/Expression/IRExecutionUnit.h" #include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Expression/UtilityFunction.h" #include "lldb/Expression/UtilityFunction.h"
#include "lldb/Host/Host.h" #include "lldb/Host/Host.h"
#include "lldb/Target/ExecutionContext.h" #include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Process.h" #include "lldb/Target/Process.h"
#include "lldb/Target/Target.h" #include "lldb/Target/Target.h"
#include "lldb/Utility/ConstString.h" #include "lldb/Utility/ConstString.h"
Show All 10 Lines
/// The text of the function. Must be a full translation unit. /// The text of the function. Must be a full translation unit.
/// ///
/// @param[in] name /// @param[in] name
/// The name of the function, as used in the text. /// The name of the function, as used in the text.
//------------------------------------------------------------------ //------------------------------------------------------------------
UtilityFunction::UtilityFunction(ExecutionContextScope &exe_scope, UtilityFunction::UtilityFunction(ExecutionContextScope &exe_scope,
const char *text, const char *name) const char *text, const char *name)
: Expression(exe_scope), m_execution_unit_sp(), m_jit_module_wp(), : Expression(exe_scope), m_execution_unit_sp(), m_jit_module_wp(),
m_function_text(ExpressionSourceCode::g_expression_prefix), m_function_text(),
m_function_name(name) { m_function_name(name) {}
if (text && text[0])
m_function_text.append(text);
}
UtilityFunction::~UtilityFunction() { UtilityFunction::~UtilityFunction() {
lldb::ProcessSP process_sp(m_jit_process_wp.lock()); lldb::ProcessSP process_sp(m_jit_process_wp.lock());
if (process_sp) { if (process_sp) {
lldb::ModuleSP jit_module_sp(m_jit_module_wp.lock()); lldb::ModuleSP jit_module_sp(m_jit_module_wp.lock());
if (jit_module_sp) if (jit_module_sp)
process_sp->GetTarget().GetImages().Remove(jit_module_sp); process_sp->GetTarget().GetImages().Remove(jit_module_sp);
} }
▲ Show 20 Lines • Show All 55 Lines • Show Last 20 Lines

source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.h

//===-- ClangExpressionSourceCode.h -----------------------------*- C++ -*-===//
//
aprantlUnsubmitted
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Level 10 nitpick: can you delete a few - characters so this fits into 80 columns?

aprantl: Level 10 nitpick: can you delete a few `-` characters so this fits into 80 columns?
jinghamAuthorUnsubmitted
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I'll do that on checkin.

jingham: I'll do that on checkin.
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef liblldb_ClangExpressionSourceCode_h
#define liblldb_ClangExpressionSourceCode_h
#include "lldb/Expression/Expression.h"
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/lldb-enumerations.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
#include <string>
namespace lldb_private {
class ExecutionContext;
class ClangExpressionSourceCode : public ExpressionSourceCode {
public:
static const char *g_expression_prefix;
static ClangExpressionSourceCode *CreateWrapped(const char *prefix,
const char *body) {
return new ClangExpressionSourceCode("$__lldb_expr", prefix, body, true);
}
uint32_t GetNumBodyLines();
bool GetText(std::string &text, lldb::LanguageType wrapping_language,
bool static_method,
ExecutionContext &exe_ctx,
bool add_locals) const;
// Given a string returned by GetText, find the beginning and end of the body
// passed to CreateWrapped. Return true if the bounds could be found. This
// will also work on text with FixItHints applied.
static bool GetOriginalBodyBounds(std::string transformed_text,
aprantlUnsubmitted
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///

aprantl: `///`
lldb::LanguageType wrapping_language,
size_t &start_loc, size_t &end_loc);
protected:
ClangExpressionSourceCode(const char *name, const char *prefix, const char *body,
bool wrap) :
ExpressionSourceCode(name, prefix, body, wrap) {}
};
} // namespace lldb_private
#endif

source/Plugins/ExpressionParser/Clang/ClangExpressionSourceCode.cpp

//===-- ClangExpressionSourceCode.cpp ---------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "ClangExpressionSourceCode.h"
#include "Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.h"
#include "Plugins/ExpressionParser/Clang/ClangPersistentVariables.h"
#include "lldb/Symbol/Block.h"
#include "lldb/Symbol/CompileUnit.h"
#include "lldb/Symbol/DebugMacros.h"
#include "lldb/Symbol/TypeSystem.h"
#include "lldb/Symbol/VariableList.h"
#include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Language.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/StackFrame.h"
#include "lldb/Target/Target.h"
#include "lldb/Utility/StreamString.h"
using namespace lldb_private;
const char *ClangExpressionSourceCode::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, ...);
}
)";
static const char *c_start_marker = " /*LLDB_BODY_START*/\n ";
static const char *c_end_marker = ";\n /*LLDB_BODY_END*/\n";
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;
return line < m_current_file_line;
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;
aprantlUnsubmitted
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This else return doesn't do anything. Is it needed for swift-lldb? Otherwise I'd just delete it.

aprantl: This `else return` doesn't do anything. Is it needed for swift-lldb? Otherwise I'd just delete…
jinghamAuthorUnsubmitted
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This is not required for swift, this is all C code and is just a straight copy of what used to be in ExpressionSourceCode.cpp. It's just the way Sean wrote it. I would rather not add extra differences before merging this back to swift, but I've made a note to fix it once I get that done.

jingham: This is not required for swift, this is all C code and is just a straight copy of what used to…
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;
}
}
}
static void AddLocalVariableDecls(const lldb::VariableListSP &var_list_sp,
StreamString &stream) {
for (size_t i = 0; i < var_list_sp->GetSize(); i++) {
lldb::VariableSP var_sp = var_list_sp->GetVariableAtIndex(i);
ConstString var_name = var_sp->GetName();
if (!var_name || var_name == ConstString("this") ||
var_name == ConstString(".block_descriptor"))
continue;
stream.Printf("using $__lldb_local_vars::%s;\n", var_name.AsCString());
}
}
bool ClangExpressionSourceCode::GetText(std::string &text,
lldb::LanguageType wrapping_language,
bool static_method,
ExecutionContext &exe_ctx,
bool add_locals) const {
const char *target_specific_defines = "typedef signed char BOOL;\n";
std::string module_macros;
Target *target = exe_ctx.GetTargetPtr();
if (target) {
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;
StreamString lldb_local_var_decls;
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 (add_locals) {
if (Language::LanguageIsCPlusPlus(frame->GetLanguage())) {
if (target->GetInjectLocalVariables(&exe_ctx)) {
lldb::VariableListSP var_list_sp =
frame->GetInScopeVariableList(false, true);
AddLocalVariableDecls(var_list_sp, lldb_local_var_decls);
}
}
}
}
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());
// First construct a tagged form of the user expression so we can find it
// later:
std::string tagged_body;
switch (wrapping_language) {
default:
tagged_body = m_body;
break;
case lldb::eLanguageTypeC:
case lldb::eLanguageTypeC_plus_plus:
case lldb::eLanguageTypeObjC:
tagged_body.append(c_start_marker);
tagged_body.append(m_body);
tagged_body.append(c_end_marker);
break;
}
switch (wrapping_language) {
default:
break;
case lldb::eLanguageTypeC:
wrap_stream.Printf("void \n"
"%s(void *$__lldb_arg) \n"
"{ \n"
" %s; \n"
"%s"
"} \n",
m_name.c_str(), lldb_local_var_decls.GetData(),
tagged_body.c_str());
break;
case lldb::eLanguageTypeC_plus_plus:
wrap_stream.Printf("void \n"
"$__lldb_class::%s(void *$__lldb_arg) \n"
"{ \n"
" %s; \n"
"%s"
"} \n",
m_name.c_str(), lldb_local_var_decls.GetData(),
tagged_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"
"@end \n",
m_name.c_str(), m_name.c_str(), tagged_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"
"@end \n",
m_name.c_str(), m_name.c_str(), tagged_body.c_str());
}
break;
}
text = wrap_stream.GetString();
} else {
text.append(m_body);
}
return true;
}
bool ClangExpressionSourceCode::GetOriginalBodyBounds(
std::string transformed_text, lldb::LanguageType wrapping_language,
size_t &start_loc, size_t &end_loc) {
const char *start_marker;
const char *end_marker;
switch (wrapping_language) {
default:
return false;
case lldb::eLanguageTypeC:
case lldb::eLanguageTypeC_plus_plus:
case lldb::eLanguageTypeObjC:
start_marker = c_start_marker;
end_marker = c_end_marker;
break;
}
start_loc = transformed_text.find(start_marker);
if (start_loc == std::string::npos)
return false;
start_loc += strlen(start_marker);
end_loc = transformed_text.find(end_marker);
return end_loc != std::string::npos;
}

source/Plugins/ExpressionParser/Clang/ClangUserExpression.cpp

Show All 15 Lines
#include <string> #include <string>
#include "ClangUserExpression.h" #include "ClangUserExpression.h"
#include "ASTResultSynthesizer.h" #include "ASTResultSynthesizer.h"
#include "ClangDiagnostic.h" #include "ClangDiagnostic.h"
#include "ClangExpressionDeclMap.h" #include "ClangExpressionDeclMap.h"
#include "ClangExpressionParser.h" #include "ClangExpressionParser.h"
#include "ClangExpressionSourceCode.h"
#include "ClangModulesDeclVendor.h" #include "ClangModulesDeclVendor.h"
#include "ClangPersistentVariables.h" #include "ClangPersistentVariables.h"
#include "lldb/Core/Debugger.h" #include "lldb/Core/Debugger.h"
#include "lldb/Core/Module.h" #include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h" #include "lldb/Core/StreamFile.h"
#include "lldb/Core/ValueObjectConstResult.h" #include "lldb/Core/ValueObjectConstResult.h"
#include "lldb/Expression/ExpressionSourceCode.h" #include "lldb/Expression/ExpressionSourceCode.h"
▲ Show 20 Lines • Show All 367 Lines • ▼ Show 20 Linesvoid ClangUserExpression::UpdateLanguageForExpr(
DiagnosticManager &diagnostic_manager, ExecutionContext &exe_ctx) { DiagnosticManager &diagnostic_manager, ExecutionContext &exe_ctx) {
m_expr_lang = lldb::LanguageType::eLanguageTypeUnknown; m_expr_lang = lldb::LanguageType::eLanguageTypeUnknown;
std::string prefix = m_expr_prefix; std::string prefix = m_expr_prefix;
if (m_options.GetExecutionPolicy() == eExecutionPolicyTopLevel) { if (m_options.GetExecutionPolicy() == eExecutionPolicyTopLevel) {
m_transformed_text = m_expr_text; m_transformed_text = m_expr_text;
} else { } else {
std::unique_ptr<ExpressionSourceCode> source_code( std::unique_ptr<ClangExpressionSourceCode> source_code(
ExpressionSourceCode::CreateWrapped(prefix.c_str(), ClangExpressionSourceCode::CreateWrapped(prefix.c_str(),
m_expr_text.c_str())); m_expr_text.c_str()));
if (m_in_cplusplus_method) if (m_in_cplusplus_method)
m_expr_lang = lldb::eLanguageTypeC_plus_plus; m_expr_lang = lldb::eLanguageTypeC_plus_plus;
else if (m_in_objectivec_method) else if (m_in_objectivec_method)
m_expr_lang = lldb::eLanguageTypeObjC; m_expr_lang = lldb::eLanguageTypeObjC;
else else
m_expr_lang = lldb::eLanguageTypeC; m_expr_lang = lldb::eLanguageTypeC;
▲ Show 20 Lines • Show All 107 Lines • ▼ Show 20 Linesbool ClangUserExpression::Parse(DiagnosticManager &diagnostic_manager,
// set the fixed text in m_fixed_text before returning an error. // set the fixed text in m_fixed_text before returning an error.
if (num_errors) { if (num_errors) {
if (diagnostic_manager.HasFixIts()) { if (diagnostic_manager.HasFixIts()) {
if (parser.RewriteExpression(diagnostic_manager)) { if (parser.RewriteExpression(diagnostic_manager)) {
size_t fixed_start; size_t fixed_start;
size_t fixed_end; size_t fixed_end;
const std::string &fixed_expression = const std::string &fixed_expression =
diagnostic_manager.GetFixedExpression(); diagnostic_manager.GetFixedExpression();
if (ExpressionSourceCode::GetOriginalBodyBounds( if (ClangExpressionSourceCode::GetOriginalBodyBounds(
fixed_expression, m_expr_lang, fixed_start, fixed_end)) fixed_expression, m_expr_lang, fixed_start, fixed_end))
m_fixed_text = m_fixed_text =
fixed_expression.substr(fixed_start, fixed_end - fixed_start); fixed_expression.substr(fixed_start, fixed_end - fixed_start);
} }
} }
return false; return false;
} }
▲ Show 20 Lines • Show All 308 Lines • Show Last 20 Lines

source/Plugins/ExpressionParser/Clang/ClangUtilityFunction.cpp

//===-- ClangUtilityFunction.cpp ---------------------------------*- C++-*-===// //===-- ClangUtilityFunction.cpp ---------------------------------*- C++-*-===//
// //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information. // See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "ClangUtilityFunction.h" #include "ClangUtilityFunction.h"
#include "ClangExpressionDeclMap.h" #include "ClangExpressionDeclMap.h"
#include "ClangExpressionParser.h" #include "ClangExpressionParser.h"
#include "ClangExpressionSourceCode.h"
#include <stdio.h> #include <stdio.h>
#if HAVE_SYS_TYPES_H #if HAVE_SYS_TYPES_H
#include <sys/types.h> #include <sys/types.h>
#endif #endif
#include "lldb/Core/Module.h" #include "lldb/Core/Module.h"
#include "lldb/Core/StreamFile.h" #include "lldb/Core/StreamFile.h"
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/Expression/IRExecutionUnit.h" #include "lldb/Expression/IRExecutionUnit.h"
#include "lldb/Host/Host.h" #include "lldb/Host/Host.h"
#include "lldb/Target/ExecutionContext.h" #include "lldb/Target/ExecutionContext.h"
#include "lldb/Target/Target.h" #include "lldb/Target/Target.h"
#include "lldb/Utility/ConstString.h" #include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Log.h" #include "lldb/Utility/Log.h"
#include "lldb/Utility/Stream.h" #include "lldb/Utility/Stream.h"
using namespace lldb_private; using namespace lldb_private;
//------------------------------------------------------------------ //------------------------------------------------------------------
/// Constructor /// Constructor
/// ///
/// @param[in] text /// @param[in] text
/// The text of the function. Must be a full translation unit. /// The text of the function. Must be a full translation unit.
/// ///
/// @param[in] name /// @param[in] name
/// The name of the function, as used in the text. /// The name of the function, as used in the text.
//------------------------------------------------------------------ //------------------------------------------------------------------
ClangUtilityFunction::ClangUtilityFunction(ExecutionContextScope &exe_scope, ClangUtilityFunction::ClangUtilityFunction(ExecutionContextScope &exe_scope,
const char *text, const char *name) const char *text, const char *name)
: UtilityFunction(exe_scope, text, name) {} : UtilityFunction(exe_scope, text, name) {
m_function_text.assign(ClangExpressionSourceCode::g_expression_prefix);
if (text && text[0])
aprantlUnsubmitted
Done
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Optional: If we changed the interface to llvm::StringRef() we don't have to check for a nullptr.

aprantl: Optional: If we changed the interface to llvm::StringRef() we don't have to check for a nullptr.
m_function_text.append(text);
}
ClangUtilityFunction::~ClangUtilityFunction() {} ClangUtilityFunction::~ClangUtilityFunction() {}
//------------------------------------------------------------------ //------------------------------------------------------------------
/// Install the utility function into a process /// Install the utility function into a process
/// ///
/// @param[in] diagnostic_manager /// @param[in] diagnostic_manager
/// A diagnostic manager to report errors and warnings to. /// A diagnostic manager to report errors and warnings to.
▲ Show 20 Lines • Show All 110 Lines • Show Last 20 Lines
lldb.xcodeproj/project.pbxproj