Add char8_t support (C++20)
This patch adds support for the char8_t type introduced in C++20
char8_t. The original patch was submitted by James Blachly on the LLDB
mailing list [1]. I modified the patch a bit and added a test.
[1] http://lists.llvm.org/pipermail/lldb-dev/2019-August/015393.html
Differential revision: https://reviews.llvm.org/D66447
llvm-svn: 369582
diff --git a/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp b/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
index 0b3c318..7e88586 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
+++ b/lldb/source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.cpp
@@ -854,6 +854,14 @@
// FIXME because of a bug in the FormattersContainer we need to add a summary
// for both X* and const X* (<rdar://problem/12717717>)
AddCXXSummary(
+ cpp_category_sp, lldb_private::formatters::Char8StringSummaryProvider,
+ "char8_t * summary provider", ConstString("char8_t *"), string_flags);
+ AddCXXSummary(cpp_category_sp,
+ lldb_private::formatters::Char8StringSummaryProvider,
+ "char8_t [] summary provider",
+ ConstString("char8_t \\[[0-9]+\\]"), string_array_flags, true);
+
+ AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char16StringSummaryProvider,
"char16_t * summary provider", ConstString("char16_t *"), string_flags);
AddCXXSummary(cpp_category_sp,
@@ -890,6 +898,9 @@
.SetHideItemNames(true)
.SetShowMembersOneLiner(false);
+ AddCXXSummary(cpp_category_sp, lldb_private::formatters::Char8SummaryProvider,
+ "char8_t summary provider", ConstString("char8_t"),
+ widechar_flags);
AddCXXSummary(
cpp_category_sp, lldb_private::formatters::Char16SummaryProvider,
"char16_t summary provider", ConstString("char16_t"), widechar_flags);
diff --git a/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.cpp b/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.cpp
index 9590790..3ea7589 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.cpp
+++ b/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.cpp
@@ -32,6 +32,31 @@
using namespace lldb_private;
using namespace lldb_private::formatters;
+bool lldb_private::formatters::Char8StringSummaryProvider(
+ ValueObject &valobj, Stream &stream, const TypeSummaryOptions &) {
+ ProcessSP process_sp = valobj.GetProcessSP();
+ if (!process_sp)
+ return false;
+
+ lldb::addr_t valobj_addr = GetArrayAddressOrPointerValue(valobj);
+ if (valobj_addr == 0 || valobj_addr == LLDB_INVALID_ADDRESS)
+ return false;
+
+ StringPrinter::ReadStringAndDumpToStreamOptions options(valobj);
+ options.SetLocation(valobj_addr);
+ options.SetProcessSP(process_sp);
+ options.SetStream(&stream);
+ options.SetPrefixToken("u8");
+
+ if (!StringPrinter::ReadStringAndDumpToStream<
+ StringPrinter::StringElementType::UTF8>(options)) {
+ stream.Printf("Summary Unavailable");
+ return true;
+ }
+
+ return true;
+}
+
bool lldb_private::formatters::Char16StringSummaryProvider(
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &) {
ProcessSP process_sp = valobj.GetProcessSP();
@@ -128,6 +153,32 @@
return true;
}
+bool lldb_private::formatters::Char8SummaryProvider(
+ ValueObject &valobj, Stream &stream, const TypeSummaryOptions &) {
+ DataExtractor data;
+ Status error;
+ valobj.GetData(data, error);
+
+ if (error.Fail())
+ return false;
+
+ std::string value;
+ valobj.GetValueAsCString(lldb::eFormatUnicode8, value);
+ if (!value.empty())
+ stream.Printf("%s ", value.c_str());
+
+ StringPrinter::ReadBufferAndDumpToStreamOptions options(valobj);
+ options.SetData(data);
+ options.SetStream(&stream);
+ options.SetPrefixToken("u8");
+ options.SetQuote('\'');
+ options.SetSourceSize(1);
+ options.SetBinaryZeroIsTerminator(false);
+
+ return StringPrinter::ReadBufferAndDumpToStream<
+ StringPrinter::StringElementType::UTF8>(options);
+}
+
bool lldb_private::formatters::Char16SummaryProvider(
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &) {
DataExtractor data;
diff --git a/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.h b/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.h
index 92bef23..35498b3 100644
--- a/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.h
+++ b/lldb/source/Plugins/Language/CPlusPlus/CxxStringTypes.h
@@ -16,6 +16,9 @@
namespace lldb_private {
namespace formatters {
+bool Char8StringSummaryProvider(ValueObject &valobj, Stream &stream,
+ const TypeSummaryOptions &options); // char8_t*
+
bool Char16StringSummaryProvider(
ValueObject &valobj, Stream &stream,
const TypeSummaryOptions &options); // char16_t* and unichar*
@@ -27,6 +30,9 @@
bool WCharStringSummaryProvider(ValueObject &valobj, Stream &stream,
const TypeSummaryOptions &options); // wchar_t*
+bool Char8SummaryProvider(ValueObject &valobj, Stream &stream,
+ const TypeSummaryOptions &options); // char8_t
+
bool Char16SummaryProvider(
ValueObject &valobj, Stream &stream,
const TypeSummaryOptions &options); // char16_t and unichar