[Lldb-commits] [lldb] r279997 - Copy StringExtractor to StdStringExtractor.

Greg Clayton via lldb-commits lldb-commits at lists.llvm.org
Tue Aug 30 08:50:00 PDT 2016


> On Aug 30, 2016, at 6:32 AM, Pavel Labath <labath at google.com> wrote:
> 
> I think we should move the new file away from source/Utility. If it's
> supposed to be used by debugserver only, we probably should move it to
> tools/debugserver/source ? Right now, debugservers cmake file contains
> a hack to be able to include these, so by doing that we will remove
> that as well.
> 
> Thoughts ?

That is fine.

> 
> pl
> 
> PS: judging by the CMakeLists.txt, the other file which is included in
> such a funny way is source/Host/common/StringConvert.cpp
> 
> 
> On 29 August 2016 at 20:46, Zachary Turner via lldb-commits
> <lldb-commits at lists.llvm.org> wrote:
>> Author: zturner
>> Date: Mon Aug 29 14:45:59 2016
>> New Revision: 279997
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=279997&view=rev
>> Log:
>> Copy StringExtractor to StdStringExtractor.
>> 
>> I have some improvements to make to StringExtractor that require
>> using LLVM.  debugserver can't take a dependency on LLVM but uses
>> this file, so I'm forking it off into StdStringExtractor and
>> StringExtractor, so that StringExtractor can take advantage of
>> some performance improvements and readability improvements that
>> LLVM can provide.
>> 
>> Added:
>>    lldb/trunk/include/lldb/Utility/StdStringExtractor.h
>>    lldb/trunk/source/Utility/StdStringExtractor.cpp
>> Modified:
>>    lldb/trunk/source/Utility/CMakeLists.txt
>>    lldb/trunk/tools/debugserver/source/JSON.cpp
>>    lldb/trunk/tools/debugserver/source/JSON.h
>>    lldb/trunk/tools/debugserver/source/RNBRemote.cpp
>> 
>> Added: lldb/trunk/include/lldb/Utility/StdStringExtractor.h
>> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/include/lldb/Utility/StdStringExtractor.h?rev=279997&view=auto
>> ==============================================================================
>> --- lldb/trunk/include/lldb/Utility/StdStringExtractor.h (added)
>> +++ lldb/trunk/include/lldb/Utility/StdStringExtractor.h Mon Aug 29 14:45:59 2016
>> @@ -0,0 +1,181 @@
>> +//===-- StdStringExtractor.h ------------------------------------*- C++ -*-===//
>> +//
>> +//                     The LLVM Compiler Infrastructure
>> +//
>> +// This file is distributed under the University of Illinois Open Source
>> +// License. See LICENSE.TXT for details.
>> +//
>> +//===----------------------------------------------------------------------===//
>> +
>> +#ifndef utility_StdStringExtractor_h_
>> +#define utility_StdStringExtractor_h_
>> +
>> +// C Includes
>> +// C++ Includes
>> +#include <string>
>> +#include <stdint.h>
>> +
>> +// Other libraries and framework includes
>> +// Project includes
>> +
>> +// Based on StringExtractor, with the added limitation that this file should not
>> +// take a dependency on LLVM, as it is used from debugserver.
>> +class StdStringExtractor
>> +{
>> +public:
>> +
>> +    enum {
>> +        BigEndian = 0,
>> +        LittleEndian = 1
>> +    };
>> +    //------------------------------------------------------------------
>> +    // Constructors and Destructors
>> +    //------------------------------------------------------------------
>> +    StdStringExtractor();
>> +    StdStringExtractor(const char *packet_cstr);
>> +    StdStringExtractor(const StdStringExtractor& rhs);
>> +    virtual ~StdStringExtractor();
>> +
>> +    //------------------------------------------------------------------
>> +    // Operators
>> +    //------------------------------------------------------------------
>> +    const StdStringExtractor&
>> +    operator=(const StdStringExtractor& rhs);
>> +
>> +    // Returns true if the file position is still valid for the data
>> +    // contained in this string extractor object.
>> +    bool
>> +    IsGood() const
>> +    {
>> +        return m_index != UINT64_MAX;
>> +    }
>> +
>> +    uint64_t
>> +    GetFilePos () const
>> +    {
>> +        return m_index;
>> +    }
>> +
>> +    void
>> +    SetFilePos (uint32_t idx)
>> +    {
>> +        m_index = idx;
>> +    }
>> +
>> +    void
>> +    Clear ()
>> +    {
>> +        m_packet.clear();
>> +        m_index = 0;
>> +    }
>> +
>> +    void
>> +    SkipSpaces ();
>> +
>> +    std::string &
>> +    GetStringRef ()
>> +    {
>> +        return m_packet;
>> +    }
>> +
>> +    const std::string &
>> +    GetStringRef () const
>> +    {
>> +        return m_packet;
>> +    }
>> +
>> +    bool
>> +    Empty()
>> +    {
>> +        return m_packet.empty();
>> +    }
>> +
>> +    size_t
>> +    GetBytesLeft ()
>> +    {
>> +        if (m_index < m_packet.size())
>> +            return m_packet.size() - m_index;
>> +        return 0;
>> +    }
>> +
>> +    char
>> +    GetChar (char fail_value = '\0');
>> +
>> +    char
>> +    PeekChar (char fail_value = '\0')
>> +    {
>> +        const char *cstr = Peek();
>> +        if (cstr)
>> +            return cstr[0];
>> +        return fail_value;
>> +    }
>> +
>> +    int
>> +    DecodeHexU8();
>> +
>> +    uint8_t
>> +    GetHexU8 (uint8_t fail_value = 0, bool set_eof_on_fail = true);
>> +
>> +    bool
>> +    GetHexU8Ex (uint8_t& ch, bool set_eof_on_fail = true);
>> +
>> +    bool
>> +    GetNameColonValue (std::string &name, std::string &value);
>> +
>> +    int32_t
>> +    GetS32 (int32_t fail_value, int base = 0);
>> +
>> +    uint32_t
>> +    GetU32 (uint32_t fail_value, int base = 0);
>> +
>> +    int64_t
>> +    GetS64 (int64_t fail_value, int base = 0);
>> +
>> +    uint64_t
>> +    GetU64 (uint64_t fail_value, int base = 0);
>> +
>> +    uint32_t
>> +    GetHexMaxU32 (bool little_endian, uint32_t fail_value);
>> +
>> +    uint64_t
>> +    GetHexMaxU64 (bool little_endian, uint64_t fail_value);
>> +
>> +    size_t
>> +    GetHexBytes (void *dst, size_t dst_len, uint8_t fail_fill_value);
>> +
>> +    size_t
>> +    GetHexBytesAvail (void *dst, size_t dst_len);
>> +
>> +    uint64_t
>> +    GetHexWithFixedSize (uint32_t byte_size, bool little_endian, uint64_t fail_value);
>> +
>> +    size_t
>> +    GetHexByteString (std::string &str);
>> +
>> +    size_t
>> +    GetHexByteStringFixedLength (std::string &str, uint32_t nibble_length);
>> +
>> +    size_t
>> +    GetHexByteStringTerminatedBy (std::string &str,
>> +                                  char terminator);
>> +
>> +    const char *
>> +    Peek ()
>> +    {
>> +        if (m_index < m_packet.size())
>> +            return m_packet.c_str() + m_index;
>> +        return nullptr;
>> +    }
>> +
>> +protected:
>> +    //------------------------------------------------------------------
>> +    // For StdStringExtractor only
>> +    //------------------------------------------------------------------
>> +    std::string m_packet;   // The string in which to extract data.
>> +    uint64_t m_index;       // When extracting data from a packet, this index
>> +                            // will march along as things get extracted. If set
>> +                            // to UINT64_MAX the end of the packet data was
>> +                            // reached when decoding information
>> +};
>> +
>> +#endif  // utility_StringExtractor_h_
>> 
>> Modified: lldb/trunk/source/Utility/CMakeLists.txt
>> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Utility/CMakeLists.txt?rev=279997&r1=279996&r2=279997&view=diff
>> ==============================================================================
>> --- lldb/trunk/source/Utility/CMakeLists.txt (original)
>> +++ lldb/trunk/source/Utility/CMakeLists.txt Mon Aug 29 14:45:59 2016
>> @@ -12,6 +12,7 @@ add_lldb_library(lldbUtility
>>   RegisterNumber.cpp
>>   SelectHelper.cpp
>>   SharingPtr.cpp
>> +  StdStringExtractor.cpp
>>   StringExtractor.cpp
>>   StringExtractorGDBRemote.cpp
>>   StringLexer.cpp
>> 
>> Added: lldb/trunk/source/Utility/StdStringExtractor.cpp
>> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/source/Utility/StdStringExtractor.cpp?rev=279997&view=auto
>> ==============================================================================
>> --- lldb/trunk/source/Utility/StdStringExtractor.cpp (added)
>> +++ lldb/trunk/source/Utility/StdStringExtractor.cpp Mon Aug 29 14:45:59 2016
>> @@ -0,0 +1,502 @@
>> +//===-- StdStringExtractor.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/Utility/StdStringExtractor.h"
>> +
>> +// C Includes
>> +#include <stdlib.h>
>> +
>> +// C++ Includes
>> +// Other libraries and framework includes
>> +// Project includes
>> +
>> +static inline int
>> +xdigit_to_sint (char ch)
>> +{
>> +    if (ch >= 'a' && ch <= 'f')
>> +        return 10 + ch - 'a';
>> +    if (ch >= 'A' && ch <= 'F')
>> +        return 10 + ch - 'A';
>> +    if (ch >= '0' && ch <= '9')
>> +        return ch - '0';
>> +    return -1;
>> +}
>> +
>> +//----------------------------------------------------------------------
>> +// StdStringExtractor constructor
>> +//----------------------------------------------------------------------
>> +StdStringExtractor::StdStringExtractor() :
>> +    m_packet(),
>> +    m_index (0)
>> +{
>> +}
>> +
>> +
>> +StdStringExtractor::StdStringExtractor(const char *packet_cstr) :
>> +    m_packet(),
>> +    m_index (0)
>> +{
>> +    if (packet_cstr)
>> +        m_packet.assign (packet_cstr);
>> +}
>> +
>> +
>> +//----------------------------------------------------------------------
>> +// StdStringExtractor copy constructor
>> +//----------------------------------------------------------------------
>> +StdStringExtractor::StdStringExtractor(const StdStringExtractor& rhs) :
>> +    m_packet (rhs.m_packet),
>> +    m_index (rhs.m_index)
>> +{
>> +
>> +}
>> +
>> +//----------------------------------------------------------------------
>> +// StdStringExtractor assignment operator
>> +//----------------------------------------------------------------------
>> +const StdStringExtractor&
>> +StdStringExtractor::operator=(const StdStringExtractor& rhs)
>> +{
>> +    if (this != &rhs)
>> +    {
>> +        m_packet = rhs.m_packet;
>> +        m_index = rhs.m_index;
>> +
>> +    }
>> +    return *this;
>> +}
>> +
>> +//----------------------------------------------------------------------
>> +// Destructor
>> +//----------------------------------------------------------------------
>> +StdStringExtractor::~StdStringExtractor()
>> +{
>> +}
>> +
>> +
>> +char
>> +StdStringExtractor::GetChar (char fail_value)
>> +{
>> +    if (m_index < m_packet.size())
>> +    {
>> +        char ch = m_packet[m_index];
>> +        ++m_index;
>> +        return ch;
>> +    }
>> +    m_index = UINT64_MAX;
>> +    return fail_value;
>> +}
>> +
>> +//----------------------------------------------------------------------
>> +// If a pair of valid hex digits exist at the head of the
>> +// StdStringExtractor they are decoded into an unsigned byte and returned
>> +// by this function
>> +//
>> +// If there is not a pair of valid hex digits at the head of the
>> +// StdStringExtractor, it is left unchanged and -1 is returned
>> +//----------------------------------------------------------------------
>> +int
>> +StdStringExtractor::DecodeHexU8()
>> +{
>> +    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)
>> +    {
>> +        return -1;
>> +    }
>> +    m_index += 2;
>> +    return (uint8_t)((hi_nibble << 4) + lo_nibble);
>> +}
>> +
>> +//----------------------------------------------------------------------
>> +// Extract an unsigned character from two hex ASCII chars in the packet
>> +// string, or return fail_value on failure
>> +//----------------------------------------------------------------------
>> +uint8_t
>> +StdStringExtractor::GetHexU8 (uint8_t fail_value, bool set_eof_on_fail)
>> +{
>> +    // On success, fail_value will be overwritten with the next
>> +    // character in the stream
>> +    GetHexU8Ex(fail_value, set_eof_on_fail);
>> +    return fail_value;
>> +}
>> +
>> +bool
>> +StdStringExtractor::GetHexU8Ex (uint8_t& ch, bool set_eof_on_fail)
>> +{
>> +    int byte = DecodeHexU8();
>> +    if (byte == -1)
>> +    {
>> +        if (set_eof_on_fail || m_index >= m_packet.size())
>> +            m_index = UINT64_MAX;
>> +        // ch should not be changed in case of failure
>> +        return false;
>> +    }
>> +    ch = (uint8_t)byte;
>> +    return true;
>> +}
>> +
>> +uint32_t
>> +StdStringExtractor::GetU32 (uint32_t fail_value, int base)
>> +{
>> +    if (m_index < m_packet.size())
>> +    {
>> +        char *end = nullptr;
>> +        const char *start = m_packet.c_str();
>> +        const char *cstr = start + m_index;
>> +        uint32_t result = static_cast<uint32_t>(::strtoul (cstr, &end, base));
>> +
>> +        if (end && end != cstr)
>> +        {
>> +            m_index = end - start;
>> +            return result;
>> +        }
>> +    }
>> +    return fail_value;
>> +}
>> +
>> +int32_t
>> +StdStringExtractor::GetS32 (int32_t fail_value, int base)
>> +{
>> +    if (m_index < m_packet.size())
>> +    {
>> +        char *end = nullptr;
>> +        const char *start = m_packet.c_str();
>> +        const char *cstr = start + m_index;
>> +        int32_t result = static_cast<int32_t>(::strtol (cstr, &end, base));
>> +
>> +        if (end && end != cstr)
>> +        {
>> +            m_index = end - start;
>> +            return result;
>> +        }
>> +    }
>> +    return fail_value;
>> +}
>> +
>> +
>> +uint64_t
>> +StdStringExtractor::GetU64 (uint64_t fail_value, int base)
>> +{
>> +    if (m_index < m_packet.size())
>> +    {
>> +        char *end = nullptr;
>> +        const char *start = m_packet.c_str();
>> +        const char *cstr = start + m_index;
>> +        uint64_t result = ::strtoull (cstr, &end, base);
>> +
>> +        if (end && end != cstr)
>> +        {
>> +            m_index = end - start;
>> +            return result;
>> +        }
>> +    }
>> +    return fail_value;
>> +}
>> +
>> +int64_t
>> +StdStringExtractor::GetS64 (int64_t fail_value, int base)
>> +{
>> +    if (m_index < m_packet.size())
>> +    {
>> +        char *end = nullptr;
>> +        const char *start = m_packet.c_str();
>> +        const char *cstr = start + m_index;
>> +        int64_t result = ::strtoll (cstr, &end, base);
>> +
>> +        if (end && end != cstr)
>> +        {
>> +            m_index = end - start;
>> +            return result;
>> +        }
>> +    }
>> +    return fail_value;
>> +}
>> +
>> +
>> +uint32_t
>> +StdStringExtractor::GetHexMaxU32 (bool little_endian, uint32_t fail_value)
>> +{
>> +    uint32_t result = 0;
>> +    uint32_t nibble_count = 0;
>> +
>> +    SkipSpaces();
>> +    if (little_endian)
>> +    {
>> +        uint32_t shift_amount = 0;
>> +        while (m_index < m_packet.size() && ::isxdigit (m_packet[m_index]))
>> +        {
>> +            // Make sure we don't exceed the size of a uint32_t...
>> +            if (nibble_count >= (sizeof(uint32_t) * 2))
>> +            {
>> +                m_index = UINT64_MAX;
>> +                return fail_value;
>> +            }
>> +
>> +            uint8_t nibble_lo;
>> +            uint8_t nibble_hi = xdigit_to_sint (m_packet[m_index]);
>> +            ++m_index;
>> +            if (m_index < m_packet.size() && ::isxdigit (m_packet[m_index]))
>> +            {
>> +                nibble_lo = xdigit_to_sint (m_packet[m_index]);
>> +                ++m_index;
>> +                result |= ((uint32_t)nibble_hi << (shift_amount + 4));
>> +                result |= ((uint32_t)nibble_lo << shift_amount);
>> +                nibble_count += 2;
>> +                shift_amount += 8;
>> +            }
>> +            else
>> +            {
>> +                result |= ((uint32_t)nibble_hi << shift_amount);
>> +                nibble_count += 1;
>> +                shift_amount += 4;
>> +            }
>> +
>> +        }
>> +    }
>> +    else
>> +    {
>> +        while (m_index < m_packet.size() && ::isxdigit (m_packet[m_index]))
>> +        {
>> +            // Make sure we don't exceed the size of a uint32_t...
>> +            if (nibble_count >= (sizeof(uint32_t) * 2))
>> +            {
>> +                m_index = UINT64_MAX;
>> +                return fail_value;
>> +            }
>> +
>> +            uint8_t nibble = xdigit_to_sint (m_packet[m_index]);
>> +            // Big Endian
>> +            result <<= 4;
>> +            result |= nibble;
>> +
>> +            ++m_index;
>> +            ++nibble_count;
>> +        }
>> +    }
>> +    return result;
>> +}
>> +
>> +uint64_t
>> +StdStringExtractor::GetHexMaxU64 (bool little_endian, uint64_t fail_value)
>> +{
>> +    uint64_t result = 0;
>> +    uint32_t nibble_count = 0;
>> +
>> +    SkipSpaces();
>> +    if (little_endian)
>> +    {
>> +        uint32_t shift_amount = 0;
>> +        while (m_index < m_packet.size() && ::isxdigit (m_packet[m_index]))
>> +        {
>> +            // Make sure we don't exceed the size of a uint64_t...
>> +            if (nibble_count >= (sizeof(uint64_t) * 2))
>> +            {
>> +                m_index = UINT64_MAX;
>> +                return fail_value;
>> +            }
>> +
>> +            uint8_t nibble_lo;
>> +            uint8_t nibble_hi = xdigit_to_sint (m_packet[m_index]);
>> +            ++m_index;
>> +            if (m_index < m_packet.size() && ::isxdigit (m_packet[m_index]))
>> +            {
>> +                nibble_lo = xdigit_to_sint (m_packet[m_index]);
>> +                ++m_index;
>> +                result |= ((uint64_t)nibble_hi << (shift_amount + 4));
>> +                result |= ((uint64_t)nibble_lo << shift_amount);
>> +                nibble_count += 2;
>> +                shift_amount += 8;
>> +            }
>> +            else
>> +            {
>> +                result |= ((uint64_t)nibble_hi << shift_amount);
>> +                nibble_count += 1;
>> +                shift_amount += 4;
>> +            }
>> +
>> +        }
>> +    }
>> +    else
>> +    {
>> +        while (m_index < m_packet.size() && ::isxdigit (m_packet[m_index]))
>> +        {
>> +            // Make sure we don't exceed the size of a uint64_t...
>> +            if (nibble_count >= (sizeof(uint64_t) * 2))
>> +            {
>> +                m_index = UINT64_MAX;
>> +                return fail_value;
>> +            }
>> +
>> +            uint8_t nibble = xdigit_to_sint (m_packet[m_index]);
>> +            // Big Endian
>> +            result <<= 4;
>> +            result |= nibble;
>> +
>> +            ++m_index;
>> +            ++nibble_count;
>> +        }
>> +    }
>> +    return result;
>> +}
>> +
>> +size_t
>> +StdStringExtractor::GetHexBytes (void *dst_void, size_t dst_len, uint8_t fail_fill_value)
>> +{
>> +    uint8_t *dst = (uint8_t*)dst_void;
>> +    size_t bytes_extracted = 0;
>> +    while (bytes_extracted < dst_len && GetBytesLeft ())
>> +    {
>> +        dst[bytes_extracted] = GetHexU8 (fail_fill_value);
>> +        if (IsGood())
>> +            ++bytes_extracted;
>> +        else
>> +            break;
>> +    }
>> +
>> +    for (size_t i = bytes_extracted; i < dst_len; ++i)
>> +        dst[i] = fail_fill_value;
>> +
>> +    return bytes_extracted;
>> +}
>> +
>> +//----------------------------------------------------------------------
>> +// Decodes all valid hex encoded bytes at the head of the
>> +// StdStringExtractor, limited by dst_len.
>> +//
>> +// Returns the number of bytes successfully decoded
>> +//----------------------------------------------------------------------
>> +size_t
>> +StdStringExtractor::GetHexBytesAvail (void *dst_void, size_t dst_len)
>> +{
>> +    uint8_t *dst = (uint8_t*)dst_void;
>> +    size_t bytes_extracted = 0;
>> +    while (bytes_extracted < dst_len)
>> +    {
>> +        int decode = DecodeHexU8();
>> +        if (decode == -1)
>> +        {
>> +            break;
>> +        }
>> +        dst[bytes_extracted++] = (uint8_t)decode;
>> +    }
>> +    return bytes_extracted;
>> +}
>> +
>> +// Consume ASCII hex nibble character pairs until we have decoded byte_size
>> +// bytes of data.
>> +
>> +uint64_t
>> +StdStringExtractor::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
>> +StdStringExtractor::GetHexByteString (std::string &str)
>> +{
>> +    str.clear();
>> +    str.reserve(GetBytesLeft() / 2);
>> +    char ch;
>> +    while ((ch = GetHexU8()) != '\0')
>> +        str.append(1, ch);
>> +    return str.size();
>> +}
>> +
>> +size_t
>> +StdStringExtractor::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)
>> +    {}
>> +
>> +    return str.size();
>> +}
>> +
>> +size_t
>> +StdStringExtractor::GetHexByteStringTerminatedBy (std::string &str,
>> +                                               char terminator)
>> +{
>> +    str.clear();
>> +    char ch;
>> +    while ((ch = GetHexU8(0,false)) != '\0')
>> +        str.append(1, ch);
>> +    if (Peek() && *Peek() == terminator)
>> +        return str.size();
>> +
>> +    str.clear();
>> +    return str.size();
>> +}
>> +
>> +bool
>> +StdStringExtractor::GetNameColonValue (std::string &name, std::string &value)
>> +{
>> +    // Read something in the form of NNNN:VVVV; where NNNN is any character
>> +    // that is not a colon, followed by a ':' character, then a value (one or
>> +    // more ';' chars), followed by a ';'
>> +    if (m_index < m_packet.size())
>> +    {
>> +        const size_t colon_idx = m_packet.find (':', m_index);
>> +        if (colon_idx != std::string::npos)
>> +        {
>> +            const size_t semicolon_idx = m_packet.find (';', colon_idx);
>> +            if (semicolon_idx != std::string::npos)
>> +            {
>> +                name.assign (m_packet, m_index, colon_idx - m_index);
>> +                value.assign (m_packet, colon_idx + 1, semicolon_idx - (colon_idx + 1));
>> +                m_index = semicolon_idx + 1;
>> +                return true;
>> +            }
>> +        }
>> +    }
>> +    m_index = UINT64_MAX;
>> +    return false;
>> +}
>> +
>> +void
>> +StdStringExtractor::SkipSpaces ()
>> +{
>> +    const size_t n = m_packet.size();
>> +    while (m_index < n && isspace(m_packet[m_index]))
>> +        ++m_index;
>> +}
>> +
>> 
>> Modified: lldb/trunk/tools/debugserver/source/JSON.cpp
>> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/tools/debugserver/source/JSON.cpp?rev=279997&r1=279996&r2=279997&view=diff
>> ==============================================================================
>> --- lldb/trunk/tools/debugserver/source/JSON.cpp (original)
>> +++ lldb/trunk/tools/debugserver/source/JSON.cpp Mon Aug 29 14:45:59 2016
>> @@ -319,7 +319,7 @@ JSONArray::GetNumElements ()
>> 
>> 
>> JSONParser::JSONParser (const char *cstr) :
>> -    StringExtractor(cstr)
>> +    StdStringExtractor(cstr)
>> {
>> }
>> 
>> 
>> Modified: lldb/trunk/tools/debugserver/source/JSON.h
>> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/tools/debugserver/source/JSON.h?rev=279997&r1=279996&r2=279997&view=diff
>> ==============================================================================
>> --- lldb/trunk/tools/debugserver/source/JSON.h (original)
>> +++ lldb/trunk/tools/debugserver/source/JSON.h Mon Aug 29 14:45:59 2016
>> @@ -10,9 +10,9 @@
>> #ifndef utility_JSON_h_
>> #define utility_JSON_h_
>> 
>> -// This cross-project usage is fine as StringExtractor.h is entirely
>> +// This cross-project usage is fine as StdStringExtractor.h is entirely
>> // self-contained.
>> -#include "lldb/Utility/StringExtractor.h"
>> +#include "lldb/Utility/StdStringExtractor.h"
>> 
>> // C includes
>> #include <inttypes.h>
>> @@ -338,7 +338,7 @@ public:
>>     Vector m_elements;
>> };
>> 
>> -class JSONParser : public StringExtractor
>> +class JSONParser : public StdStringExtractor
>> {
>> public:
>>     enum Token
>> 
>> Modified: lldb/trunk/tools/debugserver/source/RNBRemote.cpp
>> URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/tools/debugserver/source/RNBRemote.cpp?rev=279997&r1=279996&r2=279997&view=diff
>> ==============================================================================
>> --- lldb/trunk/tools/debugserver/source/RNBRemote.cpp (original)
>> +++ lldb/trunk/tools/debugserver/source/RNBRemote.cpp Mon Aug 29 14:45:59 2016
>> @@ -38,7 +38,7 @@
>> #include "RNBServices.h"
>> #include "RNBSocket.h"
>> #include "JSON.h"
>> -#include "lldb/Utility/StringExtractor.h"
>> +#include "lldb/Utility/StdStringExtractor.h"
>> #include "MacOSX/Genealogy.h"
>> #include "JSONGenerator.h"
>> 
>> @@ -2329,7 +2329,7 @@ RNBRemote::HandlePacket_QSetSTDIO (const
>>         // QSetSTDIN
>>         // QSetSTDOUT
>>         // QSetSTDERR
>> -        StringExtractor packet(p);
>> +        StdStringExtractor packet(p);
>>         packet.SetFilePos (7);
>>         char ch = packet.GetChar();
>>         while (packet.GetChar() != ':')
>> @@ -2368,7 +2368,7 @@ RNBRemote::HandlePacket_QSetWorkingDir (
>>     // Only set the working directory if we don't already have a process
>>     if (!m_ctx.HasValidProcessID())
>>     {
>> -        StringExtractor packet(p += sizeof ("QSetWorkingDir:") - 1);
>> +        StdStringExtractor packet(p += sizeof ("QSetWorkingDir:") - 1);
>>         if (packet.GetHexByteString (m_ctx.GetWorkingDir()))
>>         {
>>             struct stat working_dir_stat;
>> @@ -3473,7 +3473,7 @@ RNBRemote::HandlePacket_G (const char *p
>>     if (g_num_reg_entries == 0)
>>         InitializeRegisters ();
>> 
>> -    StringExtractor packet(p);
>> +    StdStringExtractor packet(p);
>>     packet.SetFilePos(1); // Skip the 'G'
>> 
>>     nub_process_t pid = m_ctx.ProcessID();
>> @@ -3540,10 +3540,10 @@ RNBRemoteShouldCancelCallback (void *not
>> rnb_err_t
>> RNBRemote::HandlePacket_AllocateMemory (const char *p)
>> {
>> -    StringExtractor packet (p);
>> +    StdStringExtractor packet (p);
>>     packet.SetFilePos(2); // Skip the "_M"
>> 
>> -    nub_addr_t size = packet.GetHexMaxU64 (StringExtractor::BigEndian, 0);
>> +    nub_addr_t size = packet.GetHexMaxU64 (StdStringExtractor::BigEndian, 0);
>>     if (size != 0)
>>     {
>>         if (packet.GetChar() == ',')
>> @@ -3590,9 +3590,9 @@ RNBRemote::HandlePacket_AllocateMemory (
>> rnb_err_t
>> RNBRemote::HandlePacket_DeallocateMemory (const char *p)
>> {
>> -    StringExtractor packet (p);
>> +    StdStringExtractor packet (p);
>>     packet.SetFilePos(2); // Skip the "_m"
>> -    nub_addr_t addr = packet.GetHexMaxU64 (StringExtractor::BigEndian, INVALID_NUB_ADDRESS);
>> +    nub_addr_t addr = packet.GetHexMaxU64 (StdStringExtractor::BigEndian, INVALID_NUB_ADDRESS);
>> 
>>     if (addr != INVALID_NUB_ADDRESS)
>>     {
>> @@ -3669,7 +3669,7 @@ RNBRemote::HandlePacket_RestoreRegisterS
>>             return HandlePacket_ILLFORMED (__FILE__, __LINE__, p, "No thread was is set with the Hg packet");
>>     }
>> 
>> -    StringExtractor packet (p);
>> +    StdStringExtractor packet (p);
>>     packet.SetFilePos(strlen("QRestoreRegisterState:")); // Skip the "QRestoreRegisterState:"
>>     const uint32_t save_id = packet.GetU32(0);
>> 
>> @@ -4222,7 +4222,7 @@ RNBRemote::HandlePacket_P (const char *p
>> 
>>     nub_process_t pid = m_ctx.ProcessID();
>> 
>> -    StringExtractor packet (p);
>> +    StdStringExtractor packet (p);
>> 
>>     const char cmd_char = packet.GetChar();
>>     // Register ID is always in big endian
>> @@ -4372,7 +4372,7 @@ RNBRemote::HandlePacket_GetProfileData (
>>     if (pid == INVALID_NUB_PROCESS)
>>         return SendPacket ("OK");
>> 
>> -    StringExtractor packet(p += sizeof ("qGetProfileData"));
>> +    StdStringExtractor packet(p += sizeof ("qGetProfileData"));
>>     DNBProfileDataScanType scan_type = eProfileAll;
>>     std::string name;
>>     std::string value;
>> @@ -4408,7 +4408,7 @@ RNBRemote::HandlePacket_SetEnableAsyncPr
>>     if (pid == INVALID_NUB_PROCESS)
>>         return SendPacket ("OK");
>> 
>> -    StringExtractor packet(p += sizeof ("QSetEnableAsyncProfiling"));
>> +    StdStringExtractor packet(p += sizeof ("QSetEnableAsyncProfiling"));
>>     bool enable = false;
>>     uint64_t interval_usec = 0;
>>     DNBProfileDataScanType scan_type = eProfileAll;
>> 
>> 
>> _______________________________________________
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>> lldb-commits at lists.llvm.org
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