diff options
Diffstat (limited to 'tools/debugserver/source/JSON.cpp')
| -rw-r--r-- | tools/debugserver/source/JSON.cpp | 585 | 
1 files changed, 0 insertions, 585 deletions
diff --git a/tools/debugserver/source/JSON.cpp b/tools/debugserver/source/JSON.cpp deleted file mode 100644 index 439918b6fcc4..000000000000 --- a/tools/debugserver/source/JSON.cpp +++ /dev/null @@ -1,585 +0,0 @@ -//===--------------------- JSON.cpp -----------------------------*- C++ -*-===// -// -//                     The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#include "JSON.h" - -// C includes -#include <assert.h> -#include <limits.h> - -// C++ includes -#include "lldb/Host/StringConvert.h" -#include <iomanip> -#include <sstream> - -using namespace lldb_private; - -std::string JSONString::json_string_quote_metachars(const std::string &s) { -  if (s.find('"') == std::string::npos) -    return s; - -  std::string output; -  const size_t s_size = s.size(); -  const char *s_chars = s.c_str(); -  for (size_t i = 0; i < s_size; i++) { -    unsigned char ch = *(s_chars + i); -    if (ch == '"') { -      output.push_back('\\'); -    } -    output.push_back(ch); -  } -  return output; -} - -JSONString::JSONString() : JSONValue(JSONValue::Kind::String), m_data() {} - -JSONString::JSONString(const char *s) -    : JSONValue(JSONValue::Kind::String), m_data(s ? s : "") {} - -JSONString::JSONString(const std::string &s) -    : JSONValue(JSONValue::Kind::String), m_data(s) {} - -void JSONString::Write(std::ostream &s) { -  s << "\"" << json_string_quote_metachars(m_data).c_str() << "\""; -} - -uint64_t JSONNumber::GetAsUnsigned() const { -  switch (m_data_type) { -  case DataType::Unsigned: -    return m_data.m_unsigned; -  case DataType::Signed: -    return (uint64_t)m_data.m_signed; -  case DataType::Double: -    return (uint64_t)m_data.m_double; -  } -} - -int64_t JSONNumber::GetAsSigned() const { -  switch (m_data_type) { -  case DataType::Unsigned: -    return (int64_t)m_data.m_unsigned; -  case DataType::Signed: -    return m_data.m_signed; -  case DataType::Double: -    return (int64_t)m_data.m_double; -  } -} - -double JSONNumber::GetAsDouble() const { -  switch (m_data_type) { -  case DataType::Unsigned: -    return (double)m_data.m_unsigned; -  case DataType::Signed: -    return (double)m_data.m_signed; -  case DataType::Double: -    return m_data.m_double; -  } -} - -void JSONNumber::Write(std::ostream &s) { -  switch (m_data_type) { -  case DataType::Unsigned: -    s << m_data.m_unsigned; -    break; -  case DataType::Signed: -    s << m_data.m_signed; -    break; -  case DataType::Double: -    // Set max precision to emulate %g. -    s << std::setprecision(std::numeric_limits<double>::digits10 + 1); -    s << m_data.m_double; -    break; -  } -} - -JSONTrue::JSONTrue() : JSONValue(JSONValue::Kind::True) {} - -void JSONTrue::Write(std::ostream &s) { s << "true"; } - -JSONFalse::JSONFalse() : JSONValue(JSONValue::Kind::False) {} - -void JSONFalse::Write(std::ostream &s) { s << "false"; } - -JSONNull::JSONNull() : JSONValue(JSONValue::Kind::Null) {} - -void JSONNull::Write(std::ostream &s) { s << "null"; } - -JSONObject::JSONObject() : JSONValue(JSONValue::Kind::Object) {} - -void JSONObject::Write(std::ostream &s) { -  bool first = true; -  s << '{'; -  auto iter = m_elements.begin(), end = m_elements.end(); -  for (; iter != end; iter++) { -    if (first) -      first = false; -    else -      s << ','; -    JSONString key(iter->first); -    JSONValue::SP value(iter->second); -    key.Write(s); -    s << ':'; -    value->Write(s); -  } -  s << '}'; -} - -bool JSONObject::SetObject(const std::string &key, JSONValue::SP value) { -  if (key.empty() || nullptr == value.get()) -    return false; -  m_elements[key] = value; -  return true; -} - -JSONValue::SP JSONObject::GetObject(const std::string &key) const { -  auto iter = m_elements.find(key), end = m_elements.end(); -  if (iter == end) -    return JSONValue::SP(); -  return iter->second; -} - -bool JSONObject::GetObjectAsBool(const std::string &key, bool &value) const { -  auto value_sp = GetObject(key); -  if (!value_sp) { -    // The given key doesn't exist, so we have no value. -    return false; -  } - -  if (JSONTrue::classof(value_sp.get())) { -    // We have the value, and it is true. -    value = true; -    return true; -  } else if (JSONFalse::classof(value_sp.get())) { -    // We have the value, and it is false. -    value = false; -    return true; -  } else { -    // We don't have a valid bool value for the given key. -    return false; -  } -} - -bool JSONObject::GetObjectAsString(const std::string &key, -                                   std::string &value) const { -  auto value_sp = GetObject(key); -  if (!value_sp) { -    // The given key doesn't exist, so we have no value. -    return false; -  } - -  if (!JSONString::classof(value_sp.get())) -    return false; - -  value = static_cast<JSONString *>(value_sp.get())->GetData(); -  return true; -} - -JSONArray::JSONArray() : JSONValue(JSONValue::Kind::Array) {} - -void JSONArray::Write(std::ostream &s) { -  bool first = true; -  s << '['; -  auto iter = m_elements.begin(), end = m_elements.end(); -  for (; iter != end; iter++) { -    if (first) -      first = false; -    else -      s << ','; -    (*iter)->Write(s); -  } -  s << ']'; -} - -bool JSONArray::SetObject(Index i, JSONValue::SP value) { -  if (value.get() == nullptr) -    return false; -  if (i < m_elements.size()) { -    m_elements[i] = value; -    return true; -  } -  if (i == m_elements.size()) { -    m_elements.push_back(value); -    return true; -  } -  return false; -} - -bool JSONArray::AppendObject(JSONValue::SP value) { -  if (value.get() == nullptr) -    return false; -  m_elements.push_back(value); -  return true; -} - -JSONValue::SP JSONArray::GetObject(Index i) { -  if (i < m_elements.size()) -    return m_elements[i]; -  return JSONValue::SP(); -} - -JSONArray::Size JSONArray::GetNumElements() { return m_elements.size(); } - -JSONParser::JSONParser(const char *cstr) : StdStringExtractor(cstr) {} - -JSONParser::Token JSONParser::GetToken(std::string &value) { -  std::ostringstream error; - -  value.clear(); -  SkipSpaces(); -  const uint64_t start_index = m_index; -  const char ch = GetChar(); -  switch (ch) { -  case '{': -    return Token::ObjectStart; -  case '}': -    return Token::ObjectEnd; -  case '[': -    return Token::ArrayStart; -  case ']': -    return Token::ArrayEnd; -  case ',': -    return Token::Comma; -  case ':': -    return Token::Colon; -  case '\0': -    return Token::EndOfFile; -  case 't': -    if (GetChar() == 'r') -      if (GetChar() == 'u') -        if (GetChar() == 'e') -          return Token::True; -    break; - -  case 'f': -    if (GetChar() == 'a') -      if (GetChar() == 'l') -        if (GetChar() == 's') -          if (GetChar() == 'e') -            return Token::False; -    break; - -  case 'n': -    if (GetChar() == 'u') -      if (GetChar() == 'l') -        if (GetChar() == 'l') -          return Token::Null; -    break; - -  case '"': { -    while (1) { -      bool was_escaped = false; -      int escaped_ch = GetEscapedChar(was_escaped); -      if (escaped_ch == -1) { -        error << "error: an error occurred getting a character from offset " -              << start_index; -        value = error.str(); -        return Token::Status; - -      } else { -        const bool is_end_quote = escaped_ch == '"'; -        const bool is_null = escaped_ch == 0; -        if (was_escaped || (!is_end_quote && !is_null)) { -          if (CHAR_MIN <= escaped_ch && escaped_ch <= CHAR_MAX) { -            value.append(1, (char)escaped_ch); -          } else { -            error << "error: wide character support is needed for unicode " -                     "character 0x" -                  << std::setprecision(4) << std::hex << escaped_ch; -            error << " at offset " << start_index; -            value = error.str(); -            return Token::Status; -          } -        } else if (is_end_quote) { -          return Token::String; -        } else if (is_null) { -          value = "error: missing end quote for string"; -          return Token::Status; -        } -      } -    } -  } break; - -  case '-': -  case '0': -  case '1': -  case '2': -  case '3': -  case '4': -  case '5': -  case '6': -  case '7': -  case '8': -  case '9': { -    bool done = false; -    bool got_decimal_point = false; -    uint64_t exp_index = 0; -    bool got_int_digits = (ch >= '0') && (ch <= '9'); -    bool got_frac_digits = false; -    bool got_exp_digits = false; -    while (!done) { -      const char next_ch = PeekChar(); -      switch (next_ch) { -      case '0': -      case '1': -      case '2': -      case '3': -      case '4': -      case '5': -      case '6': -      case '7': -      case '8': -      case '9': -        if (exp_index != 0) { -          got_exp_digits = true; -        } else if (got_decimal_point) { -          got_frac_digits = true; -        } else { -          got_int_digits = true; -        } -        ++m_index; // Skip this character -        break; - -      case '.': -        if (got_decimal_point) { -          error << "error: extra decimal point found at offset " << start_index; -          value = error.str(); -          return Token::Status; -        } else { -          got_decimal_point = true; -          ++m_index; // Skip this character -        } -        break; - -      case 'e': -      case 'E': -        if (exp_index != 0) { -          error << "error: extra exponent character found at offset " -                << start_index; -          value = error.str(); -          return Token::Status; -        } else { -          exp_index = m_index; -          ++m_index; // Skip this character -        } -        break; - -      case '+': -      case '-': -        // The '+' and '-' can only come after an exponent character... -        if (exp_index == m_index - 1) { -          ++m_index; // Skip the exponent sign character -        } else { -          error << "error: unexpected " << next_ch << " character at offset " -                << start_index; -          value = error.str(); -          return Token::Status; -        } -        break; - -      default: -        done = true; -        break; -      } -    } - -    if (m_index > start_index) { -      value = m_packet.substr(start_index, m_index - start_index); -      if (got_decimal_point) { -        if (exp_index != 0) { -          // We have an exponent, make sure we got exponent digits -          if (got_exp_digits) { -            return Token::Float; -          } else { -            error << "error: got exponent character but no exponent digits at " -                     "offset in float value \"" -                  << value.c_str() << "\""; -            value = error.str(); -            return Token::Status; -          } -        } else { -          // No exponent, but we need at least one decimal after the decimal -          // point -          if (got_frac_digits) { -            return Token::Float; -          } else { -            error << "error: no digits after decimal point \"" << value.c_str() -                  << "\""; -            value = error.str(); -            return Token::Status; -          } -        } -      } else { -        // No decimal point -        if (got_int_digits) { -          // We need at least some integer digits to make an integer -          return Token::Integer; -        } else { -          error << "error: no digits negate sign \"" << value.c_str() << "\""; -          value = error.str(); -          return Token::Status; -        } -      } -    } else { -      error << "error: invalid number found at offset " << start_index; -      value = error.str(); -      return Token::Status; -    } -  } break; -  default: -    break; -  } -  error << "error: failed to parse token at offset " << start_index -        << " (around character '" << ch << "')"; -  value = error.str(); -  return Token::Status; -} - -int JSONParser::GetEscapedChar(bool &was_escaped) { -  was_escaped = false; -  const char ch = GetChar(); -  if (ch == '\\') { -    was_escaped = true; -    const char ch2 = GetChar(); -    switch (ch2) { -    case '"': -    case '\\': -    case '/': -    default: -      break; - -    case 'b': -      return '\b'; -    case 'f': -      return '\f'; -    case 'n': -      return '\n'; -    case 'r': -      return '\r'; -    case 't': -      return '\t'; -    case 'u': { -      const int hi_byte = DecodeHexU8(); -      const int lo_byte = DecodeHexU8(); -      if (hi_byte >= 0 && lo_byte >= 0) -        return hi_byte << 8 | lo_byte; -      return -1; -    } break; -    } -    return ch2; -  } -  return ch; -} - -JSONValue::SP JSONParser::ParseJSONObject() { -  // The "JSONParser::Token::ObjectStart" token should have already been -  // consumed -  // by the time this function is called -  std::unique_ptr<JSONObject> dict_up(new JSONObject()); - -  std::string value; -  std::string key; -  while (1) { -    JSONParser::Token token = GetToken(value); - -    if (token == JSONParser::Token::String) { -      key.swap(value); -      token = GetToken(value); -      if (token == JSONParser::Token::Colon) { -        JSONValue::SP value_sp = ParseJSONValue(); -        if (value_sp) -          dict_up->SetObject(key, value_sp); -        else -          break; -      } -    } else if (token == JSONParser::Token::ObjectEnd) { -      return JSONValue::SP(dict_up.release()); -    } else if (token == JSONParser::Token::Comma) { -      continue; -    } else { -      break; -    } -  } -  return JSONValue::SP(); -} - -JSONValue::SP JSONParser::ParseJSONArray() { -  // The "JSONParser::Token::ObjectStart" token should have already been -  // consumed -  // by the time this function is called -  std::unique_ptr<JSONArray> array_up(new JSONArray()); - -  std::string value; -  std::string key; -  while (1) { -    JSONValue::SP value_sp = ParseJSONValue(); -    if (value_sp) -      array_up->AppendObject(value_sp); -    else -      break; - -    JSONParser::Token token = GetToken(value); -    if (token == JSONParser::Token::Comma) { -      continue; -    } else if (token == JSONParser::Token::ArrayEnd) { -      return JSONValue::SP(array_up.release()); -    } else { -      break; -    } -  } -  return JSONValue::SP(); -} - -JSONValue::SP JSONParser::ParseJSONValue() { -  std::string value; -  const JSONParser::Token token = GetToken(value); -  switch (token) { -  case JSONParser::Token::ObjectStart: -    return ParseJSONObject(); - -  case JSONParser::Token::ArrayStart: -    return ParseJSONArray(); - -  case JSONParser::Token::Integer: { -    if (value.front() == '-') { -      bool success = false; -      int64_t sval = StringConvert::ToSInt64(value.c_str(), 0, 0, &success); -      if (success) -        return JSONValue::SP(new JSONNumber(sval)); -    } else { -      bool success = false; -      uint64_t uval = StringConvert::ToUInt64(value.c_str(), 0, 0, &success); -      if (success) -        return JSONValue::SP(new JSONNumber(uval)); -    } -  } break; - -  case JSONParser::Token::Float: { -    bool success = false; -    double val = StringConvert::ToDouble(value.c_str(), 0.0, &success); -    if (success) -      return JSONValue::SP(new JSONNumber(val)); -  } break; - -  case JSONParser::Token::String: -    return JSONValue::SP(new JSONString(value)); - -  case JSONParser::Token::True: -    return JSONValue::SP(new JSONTrue()); - -  case JSONParser::Token::False: -    return JSONValue::SP(new JSONFalse()); - -  case JSONParser::Token::Null: -    return JSONValue::SP(new JSONNull()); - -  default: -    break; -  } -  return JSONValue::SP(); -}  | 
