zturner created this revision.
zturner added reviewers: labath, clayborg, jingham.
zturner added a subscriber: lldb-commits.
We have various functions like `Stream::Printf()`, and
`Error::SetErrorStringWithFormat()`, `Log::Printf()`, and various others. I
added functions that delegate to `formatv` in case people want to see some
actual usage in practice.
I also converted a few various Printfs, etc to this syntax just to demonstrate
what it looks like. I tried to find callsites that would illustrate how it
makes things simpler, such as :
- not needing to call `.c_str()` and being able to pass `std::string` and/or
`StringRef` directly as the argument.
- places where the same argument is printed multiple times, only having to pass
it once (incidentally this fixed a spelling mistake since when passing the
argument the 2nd time, there had been a typo. So this also serves as an
example of how this is safer than Printf, since less code typed = fewer chances
to mess up).
- places where complex format strings are constructed, such as using the printf
width specifier `*` or `PRIx64` are used and now we can simply pass whatever
type we have directly, even if it's architecture dependent like `size_t`.
Various other uses.
Obviously a change like this is too big to do all in one pass, since it would
have a roughly 100% chance of introducing new bugs and be impossible to bisect.
This is basically just to get the hookups in place and have a single-digit
number of illustrative use cases.
https://reviews.llvm.org/D27632
Files:
include/lldb/Core/Error.h
include/lldb/Core/Log.h
include/lldb/Core/ModuleSpec.h
include/lldb/Core/Stream.h
include/lldb/Interpreter/CommandReturnObject.h
source/Breakpoint/BreakpointOptions.cpp
source/Commands/CommandObjectApropos.cpp
source/Core/Log.cpp
source/Symbol/ClangASTContext.cpp
source/Target/Target.cpp
Index: source/Target/Target.cpp
===================================================================
--- source/Target/Target.cpp
+++ source/Target/Target.cpp
@@ -1554,11 +1554,10 @@
if (load_addr == LLDB_INVALID_ADDRESS) {
ModuleSP addr_module_sp(resolved_addr.GetModule());
if (addr_module_sp && addr_module_sp->GetFileSpec())
- error.SetErrorStringWithFormat(
- "%s[0x%" PRIx64 "] can't be resolved, %s in not currently loaded",
+ error.SetErrorStringWithFormatv(
+ "{0}[{1:x+}] can't be resolved, {0} is not currently loaded",
addr_module_sp->GetFileSpec().GetFilename().AsCString("<Unknown>"),
- resolved_addr.GetFileAddress(),
- addr_module_sp->GetFileSpec().GetFilename().AsCString("<Unknonw>"));
+ resolved_addr.GetFileAddress());
else
error.SetErrorStringWithFormat("0x%" PRIx64 " can't be resolved",
resolved_addr.GetFileAddress());
Index: source/Symbol/ClangASTContext.cpp
===================================================================
--- source/Symbol/ClangASTContext.cpp
+++ source/Symbol/ClangASTContext.cpp
@@ -9,6 +9,9 @@
#include "lldb/Symbol/ClangASTContext.h"
+#include "llvm/Support/FormatAdapters.h"
+#include "llvm/Support/FormatVariadic.h"
+
// C Includes
// C++ Includes
#include <mutex> // std::once
@@ -6739,10 +6742,7 @@
if (array) {
CompilerType element_type(getASTContext(), array->getElementType());
if (element_type.GetCompleteType()) {
- char element_name[64];
- ::snprintf(element_name, sizeof(element_name), "[%" PRIu64 "]",
- static_cast<uint64_t>(idx));
- child_name.assign(element_name);
+ child_name = llvm::formatv("[{0}]", idx);
child_byte_size = element_type.GetByteSize(
exe_ctx ? exe_ctx->GetBestExecutionContextScope() : NULL);
child_byte_offset = (int32_t)idx * (int32_t)child_byte_size;
@@ -8883,8 +8883,8 @@
std::string base_class_type_name(base_class_qual_type.getAsString());
// Indent and print the base class type name
- s->Printf("\n%*s%s ", depth + DEPTH_INCREMENT, "",
- base_class_type_name.c_str());
+ s->Format("\n{0}{1}", llvm::fmt_repeat(" ", depth + DEPTH_INCREMENT),
+ base_class_type_name);
clang::TypeInfo base_class_type_info =
getASTContext()->getTypeInfo(base_class_qual_type);
Index: source/Core/Log.cpp
===================================================================
--- source/Core/Log.cpp
+++ source/Core/Log.cpp
@@ -138,20 +138,6 @@
}
//----------------------------------------------------------------------
-// Print debug strings if and only if the global debug option is set to
-// a non-zero value.
-//----------------------------------------------------------------------
-void Log::DebugVerbose(const char *format, ...) {
- if (!GetOptions().AllSet(LLDB_LOG_OPTION_DEBUG | LLDB_LOG_OPTION_VERBOSE))
- return;
-
- va_list args;
- va_start(args, format);
- VAPrintf(format, args);
- va_end(args);
-}
-
-//----------------------------------------------------------------------
// Log only if all of the bits are set
//----------------------------------------------------------------------
void Log::LogIf(uint32_t bits, const char *format, ...) {
@@ -186,24 +172,6 @@
}
//----------------------------------------------------------------------
-// Printing of errors that ARE fatal. Exit with ERR exit code
-// immediately.
-//----------------------------------------------------------------------
-void Log::FatalError(int err, const char *format, ...) {
- char *arg_msg = nullptr;
- va_list args;
- va_start(args, format);
- ::vasprintf(&arg_msg, format, args);
- va_end(args);
-
- if (arg_msg != nullptr) {
- Printf("error: %s", arg_msg);
- ::free(arg_msg);
- }
- ::exit(err);
-}
-
-//----------------------------------------------------------------------
// Printing of warnings that are not fatal only if verbose mode is
// enabled.
//----------------------------------------------------------------------
@@ -218,27 +186,6 @@
}
//----------------------------------------------------------------------
-// Printing of warnings that are not fatal only if verbose mode is
-// enabled.
-//----------------------------------------------------------------------
-void Log::WarningVerbose(const char *format, ...) {
- if (!m_options.Test(LLDB_LOG_OPTION_VERBOSE))
- return;
-
- char *arg_msg = nullptr;
- va_list args;
- va_start(args, format);
- ::vasprintf(&arg_msg, format, args);
- va_end(args);
-
- if (arg_msg == nullptr)
- return;
-
- Printf("warning: %s", arg_msg);
- free(arg_msg);
-}
-
-//----------------------------------------------------------------------
// Printing of warnings that are not fatal.
//----------------------------------------------------------------------
void Log::Warning(const char *format, ...) {
Index: source/Commands/CommandObjectApropos.cpp
===================================================================
--- source/Commands/CommandObjectApropos.cpp
+++ source/Commands/CommandObjectApropos.cpp
@@ -90,9 +90,9 @@
m_interpreter.GetDebugger().Apropos(search_word, properties);
if (num_properties) {
const bool dump_qualified_name = true;
- result.AppendMessageWithFormat(
- "\nThe following settings variables may relate to '%s': \n\n",
- args[0].c_str());
+ result.AppendMessageWithFormatv(
+ "\nThe following settings variables may relate to '{0}': \n\n",
+ args[0].ref);
for (size_t i = 0; i < num_properties; ++i)
properties[i]->DumpDescription(
m_interpreter, result.GetOutputStream(), 0, dump_qualified_name);
Index: source/Breakpoint/BreakpointOptions.cpp
===================================================================
--- source/Breakpoint/BreakpointOptions.cpp
+++ source/Breakpoint/BreakpointOptions.cpp
@@ -86,8 +86,8 @@
found_something = true;
interp_language = ScriptInterpreter::StringToLanguage(interpreter_str);
if (interp_language == eScriptLanguageUnknown) {
- error.SetErrorStringWithFormat("Unknown breakpoint command language: %s.",
- interpreter_str.c_str());
+ error.SetErrorStringWithFormatv("Unknown breakpoint command language: {0}.",
+ interpreter_str);
return data_up;
}
data_up->interpreter = interp_language;
Index: include/lldb/Interpreter/CommandReturnObject.h
===================================================================
--- include/lldb/Interpreter/CommandReturnObject.h
+++ include/lldb/Interpreter/CommandReturnObject.h
@@ -21,6 +21,7 @@
#include "lldb/lldb-private.h"
#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/FormatVariadic.h"
#include <memory>
@@ -113,6 +114,21 @@
void AppendErrorWithFormat(const char *format, ...)
__attribute__((format(printf, 2, 3)));
+ template <typename... Args>
+ void AppendMessageWithFormatv(const char *format, Args &&... args) {
+ AppendMessage(llvm::formatv(format, std::forward<Args>(args)...).str());
+ }
+
+ template <typename... Args>
+ void AppendWarningWithFormatv(const char *format, Args &&... args) {
+ AppendWarning(llvm::formatv(format, std::forward<Args>(args)...).str());
+ }
+
+ template <typename... Args>
+ void AppendErrorWithFormatv(const char *format, Args &&... args) {
+ AppendError(llvm::formatv(format, std::forward<Args>(args)...).str());
+ }
+
void SetError(const Error &error, const char *fallback_error_cstr = nullptr);
void SetError(llvm::StringRef error_cstr);
Index: include/lldb/Core/Stream.h
===================================================================
--- include/lldb/Core/Stream.h
+++ include/lldb/Core/Stream.h
@@ -19,6 +19,8 @@
#include "lldb/Core/Flags.h"
#include "lldb/lldb-private.h"
+#include "llvm/Support/FormatVariadic.h"
+
namespace lldb_private {
//----------------------------------------------------------------------
@@ -485,6 +487,10 @@
size_t PrintfVarArg(const char *format, va_list args);
+ template <typename... Args> void Format(const char *format, Args &&... args) {
+ PutCString(llvm::formatv(format, std::forward<Args>(args)...).str());
+ }
+
//------------------------------------------------------------------
/// Output a quoted C string value to the stream.
///
Index: include/lldb/Core/ModuleSpec.h
===================================================================
--- include/lldb/Core/ModuleSpec.h
+++ include/lldb/Core/ModuleSpec.h
@@ -240,7 +240,7 @@
if (m_object_mod_time != llvm::sys::TimePoint<>()) {
if (dumped_something)
strm.PutCString(", ");
- strm.Printf("object_mod_time = 0x%" PRIx64,
+ strm.Format("object_mod_time = {0:x+}",
uint64_t(llvm::sys::toTimeT(m_object_mod_time)));
}
}
Index: include/lldb/Core/Log.h
===================================================================
--- include/lldb/Core/Log.h
+++ include/lldb/Core/Log.h
@@ -25,6 +25,8 @@
#include "lldb/Core/PluginInterface.h"
#include "lldb/lldb-private.h"
+#include "llvm/Support/FormatVariadic.h"
+
//----------------------------------------------------------------------
// Logging Options
//----------------------------------------------------------------------
@@ -43,7 +45,7 @@
//----------------------------------------------------------------------
namespace lldb_private {
-class Log {
+class Log final {
public:
//------------------------------------------------------------------
// Callback definitions for abstracted plug-in log access.
@@ -102,42 +104,32 @@
Log(const lldb::StreamSP &stream_sp);
- virtual ~Log();
+ ~Log();
+
+ void PutCString(const char *cstr);
+ void PutString(llvm::StringRef str);
- virtual void PutCString(const char *cstr);
- virtual void PutString(llvm::StringRef str);
+ template <typename... Args> void Format(const char *fmt, Args &&... args) {
+ PutString(llvm::formatv(fmt, std::forward<Args>(args)...).str());
+ }
// CLEANUP: Add llvm::raw_ostream &Stream() function.
- virtual void Printf(const char *format, ...)
- __attribute__((format(printf, 2, 3)));
+ void Printf(const char *format, ...) __attribute__((format(printf, 2, 3)));
- virtual void VAPrintf(const char *format, va_list args);
+ void VAPrintf(const char *format, va_list args);
- virtual void LogIf(uint32_t mask, const char *fmt, ...)
+ void LogIf(uint32_t mask, const char *fmt, ...)
__attribute__((format(printf, 3, 4)));
- virtual void Debug(const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
-
- virtual void DebugVerbose(const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
+ void Debug(const char *fmt, ...) __attribute__((format(printf, 2, 3)));
- virtual void Error(const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
-
- virtual void VAError(const char *format, va_list args);
-
- virtual void FatalError(int err, const char *fmt, ...)
- __attribute__((format(printf, 3, 4)));
+ void Error(const char *fmt, ...) __attribute__((format(printf, 2, 3)));
- virtual void Verbose(const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
+ void VAError(const char *format, va_list args);
- virtual void Warning(const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
+ void Verbose(const char *fmt, ...) __attribute__((format(printf, 2, 3)));
- virtual void WarningVerbose(const char *fmt, ...)
- __attribute__((format(printf, 2, 3)));
+ void Warning(const char *fmt, ...) __attribute__((format(printf, 2, 3)));
Flags &GetOptions();
Index: include/lldb/Core/Error.h
===================================================================
--- include/lldb/Core/Error.h
+++ include/lldb/Core/Error.h
@@ -19,6 +19,8 @@
#include "lldb/lldb-private.h"
+#include "llvm/Support/FormatVariadic.h"
+
namespace lldb_private {
class Log;
@@ -258,6 +260,11 @@
int SetErrorStringWithVarArg(const char *format, va_list args);
+ template <typename... Args>
+ void SetErrorStringWithFormatv(const char *format, Args &&... args) {
+ SetErrorString(llvm::formatv(format, std::forward<Args>(args)...).str());
+ }
+
//------------------------------------------------------------------
/// Test for success condition.
///
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