Makes Peek() return a StringRef instead of a const char*.
This leads to a few callers of Peek() being able to be made a
little nicer (for example using StringRef member functions instead
of c-style strncmp and related functions) and generally safer
usage.
llvm-svn: 280139
ArchSpec (const llvm::Triple &triple);
explicit
ArchSpec (const char *triple_cstr);
- explicit
- ArchSpec (const char *triple_cstr, Platform *platform);
+ explicit ArchSpec(llvm::StringRef triple_str);
+ explicit ArchSpec(const char *triple_cstr, Platform *platform);
+ ArchSpec(llvm::StringRef triple_str, Platform *platform);
//------------------------------------------------------------------
/// Constructor over architecture name.
///
/// The NULL terminated C string of the copy of \a arg_cstr.
//------------------------------------------------------------------
const char *
- AppendArgument (const char *arg_cstr, char quote_char = '\0');
+ AppendArgument(llvm::StringRef arg_str, char quote_char = '\0');
+
+ const char *
+ AppendArgument(const char *arg_cstr, char quote_char = '\0');
void
AppendArguments (const Args &rhs);
//------------------------------------------------------------------
const char *
InsertArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char = '\0');
+ const char *
+ InsertArgumentAtIndex(size_t idx, llvm::StringRef arg_str, char quote_char = '\0');
//------------------------------------------------------------------
/// Replaces the argument value at index \a idx to \a arg_cstr
char
PeekChar (char fail_value = '\0')
{
- const char *cstr = Peek();
- if (cstr)
- return cstr[0];
- return fail_value;
+ llvm::StringRef str = Peek();
+ if (str.empty())
+ return fail_value;
+ return str[0];
}
int
size_t
GetHexBytesAvail (llvm::MutableArrayRef<uint8_t> dest);
- uint64_t
- GetHexWithFixedSize (uint32_t byte_size, bool little_endian, uint64_t fail_value);
-
size_t
GetHexByteString (std::string &str);
size_t
GetHexByteStringTerminatedBy (std::string &str,
char terminator);
-
- const char *
- Peek ()
+
+ llvm::StringRef
+ Peek() const
{
- if (m_index < m_packet.size())
- return m_packet.c_str() + m_index;
- return nullptr;
+ if (!IsGood())
+ return llvm::StringRef();
+ return llvm::StringRef(m_packet).drop_front(m_index);
}
protected:
SetTriple(triple_cstr, platform);
}
+ArchSpec::ArchSpec(llvm::StringRef triple_str, Platform *platform)
+ : m_triple(), m_core(kCore_invalid), m_byte_order(eByteOrderInvalid), m_flags(0), m_distribution_id()
+{
+ if (!triple_str.empty())
+ SetTriple(triple_str.str().c_str(), platform);
+}
ArchSpec::ArchSpec (const char *triple_cstr) :
m_triple (),
SetTriple(triple_cstr);
}
+ArchSpec::ArchSpec(llvm::StringRef triple_str)
+ : m_triple(), m_core(kCore_invalid), m_byte_order(eByteOrderInvalid), m_flags(0), m_distribution_id()
+{
+ if (!triple_str.empty())
+ SetTriple(triple_str.str().c_str());
+}
+
ArchSpec::ArchSpec(const llvm::Triple &triple) :
m_triple (),
m_core (kCore_invalid),
}
const char *
-Args::AppendArgument (const char *arg_cstr, char quote_char)
+Args::AppendArgument(llvm::StringRef arg_str, char quote_char)
+{
+ return InsertArgumentAtIndex(GetArgumentCount(), arg_str, quote_char);
+}
+
+const char *
+Args::AppendArgument(const char *arg_cstr, char quote_char)
{
return InsertArgumentAtIndex (GetArgumentCount(), arg_cstr, quote_char);
}
const char *
-Args::InsertArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char)
+Args::InsertArgumentAtIndex(size_t idx, llvm::StringRef arg_str, char quote_char)
{
// Since we are using a std::list to hold onto the copied C string and
// we don't have direct access to the elements, we have to iterate to
for (pos = m_args.begin(); i > 0 && pos != end; ++pos)
--i;
- pos = m_args.insert(pos, arg_cstr);
-
+ pos = m_args.insert(pos, std::string(arg_str.data(), arg_str.size()));
+
if (idx >= m_args_quote_char.size())
{
m_args_quote_char.resize(idx + 1);
}
else
m_args_quote_char.insert(m_args_quote_char.begin() + idx, quote_char);
-
+
UpdateArgvFromArgs();
return GetArgumentAtIndex(idx);
}
const char *
-Args::ReplaceArgumentAtIndex (size_t idx, const char *arg_cstr, char quote_char)
+Args::InsertArgumentAtIndex(size_t idx, const char *arg_cstr, char quote_char)
+{
+ return InsertArgumentAtIndex(idx, llvm::StringRef(arg_cstr), quote_char);
+}
+
+const char *
+Args::ReplaceArgumentAtIndex(size_t idx, const char *arg_cstr, char quote_char)
{
// Since we are using a std::list to hold onto the copied C string and
// we don't have direct access to the elements, we have to iterate to
uint32_t retcode = response.GetHexMaxU32(false, UINT32_MAX);
if (retcode == UINT32_MAX)
return retcode;
- const char next = (response.Peek() ? *response.Peek() : 0);
+ const char next = (response.GetBytesLeft() ? response.PeekChar() : 0);
if (next == ',')
return 0;
if (next == ';')
return false;
if (response.GetChar() != ',')
return false;
- if (response.Peek() && *response.Peek() == 'x')
+ if (response.GetBytesLeft() && response.PeekChar() == 'x')
return false;
low = response.GetHexMaxU64(false, UINT64_MAX);
high = response.GetHexMaxU64(false, UINT64_MAX);
{
std::string str;
packet.GetHexByteString(str);
- m_process_launch_info.GetEnvironmentEntries().AppendArgument(str.c_str());
+ m_process_launch_info.GetEnvironmentEntries().AppendArgument(str);
return SendOKResponse();
}
return SendErrorResponse(12);
const uint32_t bytes_left = packet.GetBytesLeft();
if (bytes_left > 0)
{
- const char* arch_triple = packet.Peek();
- ArchSpec arch_spec(arch_triple,NULL);
+ ArchSpec arch_spec(packet.Peek(), nullptr);
m_process_launch_info.SetArchitecture(arch_spec);
return SendOKResponse();
}
if (packet.GetBytesLeft () > 0)
{
// FIXME add continue at address support for $C{signo}[;{continue-address}].
- if (*packet.Peek () == ';')
+ if (packet.PeekChar() == ';')
return SendUnimplementedResponse (packet.GetStringRef().c_str());
else
return SendIllFormedResponse (packet, "unexpected content after $C{signal-number}");
}
// Check if this is all continue (no options or ";c").
- if (::strcmp (packet.Peek (), ";c") == 0)
+ if (packet.Peek() == ";c")
{
// Move past the ';', then do a simple 'c'.
packet.SetFilePos (packet.GetFilePos () + 1);
return Handle_c (packet);
}
- else if (::strcmp (packet.Peek (), ";s") == 0)
+ else if (packet.Peek() == ";s")
{
// Move past the ';', then do a simple 's'.
packet.SetFilePos (packet.GetFilePos () + 1);
ResumeActionList thread_actions;
- while (packet.GetBytesLeft () && *packet.Peek () == ';')
+ while (packet.GetBytesLeft() && packet.PeekChar() == ';')
{
// Skip the semi-colon.
packet.GetChar ();
}
// Parse out optional :{thread-id} value.
- if (packet.GetBytesLeft () && (*packet.Peek () == ':'))
+ if (packet.GetBytesLeft() && packet.PeekChar() == ':')
{
// Consume the separator.
packet.GetChar ();
return thread_sp;
// Parse out thread: portion.
- if (strncmp (packet.Peek (), "thread:", strlen("thread:")) != 0)
+ if (packet.Peek().startswith("thread:"))
{
if (log)
log->Printf ("GDBRemoteCommunicationServerLLGS::%s gdb-remote parse error: expected 'thread:' but not found, packet contents = '%s'", __FUNCTION__, packet.GetStringRef ().c_str ());
#include <tuple>
// Other libraries and framework includes
// Project includes
+#include "llvm/ADT/Optional.h"
#include "llvm/Support/Endian.h"
static inline int
return fail_value;
}
+static llvm::Optional<uint8_t>
+translateHexChar(char ch1, char ch2)
+{
+ const int hi_nibble = xdigit_to_sint(ch1);
+ const int lo_nibble = xdigit_to_sint(ch2);
+ if (hi_nibble == -1 || lo_nibble == -1)
+ return llvm::None;
+ return (uint8_t)((hi_nibble << 4) + lo_nibble);
+}
+
//----------------------------------------------------------------------
// If a pair of valid hex digits exist at the head of the
// StringExtractor they are decoded into an unsigned byte and returned
{
SkipSpaces();
if (GetBytesLeft() < 2)
- {
return -1;
- }
- const int hi_nibble = xdigit_to_sint(m_packet[m_index]);
- const int lo_nibble = xdigit_to_sint(m_packet[m_index+1]);
- if (hi_nibble == -1 || lo_nibble == -1)
- {
+ auto result = translateHexChar(m_packet[m_index], m_packet[m_index + 1]);
+ if (!result.hasValue())
return -1;
- }
m_index += 2;
- return (uint8_t)((hi_nibble << 4) + lo_nibble);
+ return *result;
}
//----------------------------------------------------------------------
// of a uint32 were missing from the input. We're essentially padding left
// with 0's.
uint8_t bytes[2 * sizeof(uint32_t) - 1] = {0};
- auto byte_array = llvm::MutableArrayRef<uint8_t>(bytes);
- auto decode_loc = byte_array.drop_front(sizeof(uint32_t) - 1);
+ llvm::MutableArrayRef<uint8_t> byte_array(bytes);
+ llvm::MutableArrayRef<uint8_t> decode_loc = byte_array.take_back(sizeof(uint32_t));
uint32_t bytes_decoded = GetHexBytesAvail(decode_loc);
if (bytes_decoded == sizeof(uint32_t) && ::isxdigit(PeekChar()))
return fail();
{
SkipSpaces();
- // Allocate enough space for 2 uint32's. In big endian, if the user writes
- // "AB" then this should be treated as 0xAB, not 0xAB000000. In order to
- // do this, we decode into the second half of the array, and then shift the
- // starting point of the big endian translation left by however many bytes
+ // Allocate enough space for 2 uint64's. In big endian, if the user writes
+ // "AB" then this should be treated as 0x000000AB, not 0xAB000000. In order
+ // to do this, we decode into the second half of the array, and then shift
+ // the starting point of the big endian translation left by however many bytes
// of a uint32 were missing from the input. We're essentially padding left
// with 0's.
uint8_t bytes[2 * sizeof(uint64_t) - 1] = {0};
- auto byte_array = llvm::MutableArrayRef<uint8_t>(bytes);
- auto decode_loc = byte_array.drop_front(sizeof(uint64_t) - 1);
+ llvm::MutableArrayRef<uint8_t> byte_array(bytes);
+ llvm::MutableArrayRef<uint8_t> decode_loc = byte_array.take_back(sizeof(uint64_t));
uint32_t bytes_decoded = GetHexBytesAvail(decode_loc);
if (bytes_decoded == sizeof(uint64_t) && ::isxdigit(PeekChar()))
return fail();
return bytes_extracted;
}
-// Consume ASCII hex nibble character pairs until we have decoded byte_size
-// bytes of data.
-
-uint64_t
-StringExtractor::GetHexWithFixedSize (uint32_t byte_size, bool little_endian, uint64_t fail_value)
-{
- if (byte_size <= 8 && GetBytesLeft() >= byte_size * 2)
- {
- uint64_t result = 0;
- uint32_t i;
- if (little_endian)
- {
- // Little Endian
- uint32_t shift_amount;
- for (i = 0, shift_amount = 0;
- i < byte_size && IsGood();
- ++i, shift_amount += 8)
- {
- result |= ((uint64_t)GetHexU8() << shift_amount);
- }
- }
- else
- {
- // Big Endian
- for (i = 0; i < byte_size && IsGood(); ++i)
- {
- result <<= 8;
- result |= GetHexU8();
- }
- }
- }
- m_index = UINT64_MAX;
- return fail_value;
-}
-
size_t
StringExtractor::GetHexByteString (std::string &str)
{
StringExtractor::GetHexByteStringFixedLength (std::string &str, uint32_t nibble_length)
{
str.clear();
-
- uint32_t nibble_count = 0;
- for (const char *pch = Peek(); (nibble_count < nibble_length) && (pch != nullptr); str.append(1, GetHexU8(0, false)), pch = Peek (), nibble_count += 2)
- {}
-
+ llvm::StringRef nibs = Peek().take_front(nibble_length);
+ while (nibs.size() >= 2)
+ {
+ auto ch = translateHexChar(nibs[0], nibs[1]);
+ if (!ch.hasValue())
+ break;
+ str.push_back(*ch);
+ nibs = nibs.drop_front(2);
+ }
+ m_index += str.size() * 2;
return str.size();
}
char ch;
while ((ch = GetHexU8(0,false)) != '\0')
str.append(1, ch);
- if (Peek() && *Peek() == terminator)
+ if (GetBytesLeft() > 0 && PeekChar() == terminator)
return str.size();
str.clear();
ASSERT_STREQ (kEmptyString, ex.GetStringRef().c_str());
ASSERT_EQ (true, ex.Empty());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, InitMisc)
ASSERT_STREQ (kInitMiscString, ex.GetStringRef().c_str());
ASSERT_EQ (false, ex.Empty());
ASSERT_EQ (sizeof(kInitMiscString)-1, ex.GetBytesLeft());
- ASSERT_EQ (kInitMiscString[0], *ex.Peek());
+ ASSERT_EQ(kInitMiscString[0], ex.PeekChar());
}
TEST_F (StringExtractorTest, DecodeHexU8_Underflow)
ASSERT_EQ (0u, ex.GetFilePos());
ASSERT_EQ (true, ex.Empty());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, DecodeHexU8_Underflow2)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (0u, ex.GetFilePos());
ASSERT_EQ (1u, ex.GetBytesLeft());
- ASSERT_EQ ('1', *ex.Peek());
+ ASSERT_EQ('1', ex.PeekChar());
}
TEST_F (StringExtractorTest, DecodeHexU8_InvalidHex)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (0u, ex.GetFilePos());
ASSERT_EQ (2u, ex.GetBytesLeft());
- ASSERT_EQ ('x', *ex.Peek());
+ ASSERT_EQ('x', ex.PeekChar());
}
TEST_F (StringExtractorTest, DecodeHexU8_InvalidHex2)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (0u, ex.GetFilePos());
ASSERT_EQ (2u, ex.GetBytesLeft());
- ASSERT_EQ ('a', *ex.Peek());
+ ASSERT_EQ('a', ex.PeekChar());
}
TEST_F (StringExtractorTest, DecodeHexU8_Exact)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (2u, ex.GetFilePos());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, DecodeHexU8_Extra)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (2u, ex.GetFilePos());
ASSERT_EQ (2u, ex.GetBytesLeft());
- ASSERT_EQ ('3', *ex.Peek());
+ ASSERT_EQ('3', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexU8_Underflow)
ASSERT_EQ (UINT64_MAX, ex.GetFilePos());
ASSERT_EQ (true, ex.Empty());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexU8_Underflow2)
ASSERT_EQ (false, ex.IsGood());
ASSERT_EQ (UINT64_MAX, ex.GetFilePos());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexU8_InvalidHex)
ASSERT_EQ (false, ex.IsGood());
ASSERT_EQ (UINT64_MAX, ex.GetFilePos());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexU8_Exact)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (2u, ex.GetFilePos());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexU8_Extra)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (2u, ex.GetFilePos());
ASSERT_EQ (2u, ex.GetBytesLeft());
- ASSERT_EQ ('3', *ex.Peek());
+ ASSERT_EQ('3', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexU8_Underflow_NoEof)
ASSERT_EQ (UINT64_MAX, ex.GetFilePos());
ASSERT_EQ (true, ex.Empty());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexU8_Underflow2_NoEof)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (0u, ex.GetFilePos());
ASSERT_EQ (1u, ex.GetBytesLeft());
- ASSERT_EQ ('1', *ex.Peek());
+ ASSERT_EQ('1', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexU8_InvalidHex_NoEof)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (0u, ex.GetFilePos());
ASSERT_EQ (2u, ex.GetBytesLeft());
- ASSERT_EQ ('x', *ex.Peek());
+ ASSERT_EQ('x', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexU8_Exact_NoEof)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (2u, ex.GetFilePos());
ASSERT_EQ (0u, ex.GetBytesLeft());
- ASSERT_EQ (nullptr, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexU8_Extra_NoEof)
ASSERT_EQ (true, ex.IsGood());
ASSERT_EQ (2u, ex.GetFilePos());
ASSERT_EQ (2u, ex.GetBytesLeft());
- ASSERT_EQ ('3', *ex.Peek());
+ ASSERT_EQ('3', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexBytes)
ASSERT_EQ(2*kValidHexPairs, ex.GetFilePos());
ASSERT_EQ(false, ex.Empty());
ASSERT_EQ(4u, ex.GetBytesLeft());
- ASSERT_EQ('x', *ex.Peek());
+ ASSERT_EQ('x', ex.PeekChar());
}
TEST_F(StringExtractorTest, GetHexBytes_FullString)
ASSERT_EQ(UINT64_MAX, ex.GetFilePos());
ASSERT_EQ(false, ex.Empty());
ASSERT_EQ(0u, ex.GetBytesLeft());
- ASSERT_EQ(0, ex.Peek());
}
TEST_F (StringExtractorTest, GetHexBytes_Partial)
ASSERT_EQ(kReadBytes*2, ex.GetFilePos());
ASSERT_EQ(false, ex.Empty());
ASSERT_EQ(12u, ex.GetBytesLeft());
- ASSERT_EQ('2', *ex.Peek());
+ ASSERT_EQ('2', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexBytesAvail)
ASSERT_EQ(2*kValidHexPairs, ex.GetFilePos());
ASSERT_EQ(false, ex.Empty());
ASSERT_EQ(4u, ex.GetBytesLeft());
- ASSERT_EQ('x', *ex.Peek());
+ ASSERT_EQ('x', ex.PeekChar());
}
TEST_F(StringExtractorTest, GetHexBytesAvail_FullString)
ASSERT_EQ(kValidHexPairs*2, ex.GetFilePos());
ASSERT_EQ(false, ex.Empty());
ASSERT_EQ(4u, ex.GetBytesLeft());
- ASSERT_EQ('x', *ex.Peek());
+ ASSERT_EQ('x', ex.PeekChar());
}
TEST_F (StringExtractorTest, GetHexBytesAvail_Partial)
ASSERT_EQ(kReadBytes*2, ex.GetFilePos());
ASSERT_EQ(false, ex.Empty());
ASSERT_EQ(12u, ex.GetBytesLeft());
- ASSERT_EQ('2', *ex.Peek());
+ ASSERT_EQ('2', ex.PeekChar());
}
TEST_F(StringExtractorTest, GetNameColonValueSuccess)