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authorKate Stone <katherine.stone@apple.com>2016-09-06 20:57:50 +0000
committerKate Stone <katherine.stone@apple.com>2016-09-06 20:57:50 +0000
commitb9c1b51e45b845debb76d8658edabca70ca56079 (patch)
treedfcb5a13ef2b014202340f47036da383eaee74aa /lldb/tools/debugserver/source/JSON.cpp
parentd5aa73376966339caad04013510626ec2e42c760 (diff)
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*** This commit represents a complete reformatting of the LLDB source code
*** to conform to clang-format’s LLVM style. This kind of mass change has *** two obvious implications: Firstly, merging this particular commit into a downstream fork may be a huge effort. Alternatively, it may be worth merging all changes up to this commit, performing the same reformatting operation locally, and then discarding the merge for this particular commit. The commands used to accomplish this reformatting were as follows (with current working directory as the root of the repository): find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} + find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ; The version of clang-format used was 3.9.0, and autopep8 was 1.2.4. Secondly, “blame” style tools will generally point to this commit instead of a meaningful prior commit. There are alternatives available that will attempt to look through this change and find the appropriate prior commit. YMMV. llvm-svn: 280751
Diffstat (limited to 'lldb/tools/debugserver/source/JSON.cpp')
-rw-r--r--lldb/tools/debugserver/source/JSON.cpp1170
1 files changed, 506 insertions, 664 deletions
diff --git a/lldb/tools/debugserver/source/JSON.cpp b/lldb/tools/debugserver/source/JSON.cpp
index 34a01f4..19ebfd0 100644
--- a/lldb/tools/debugserver/source/JSON.cpp
+++ b/lldb/tools/debugserver/source/JSON.cpp
@@ -14,733 +14,575 @@
#include <limits.h>
// C++ includes
+#include "lldb/Host/StringConvert.h"
#include <iomanip>
#include <sstream>
-#include "lldb/Host/StringConvert.h"
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);
+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('\\');
}
- return output;
+ output.push_back(ch);
+ }
+ return output;
}
-JSONString::JSONString () :
- JSONValue(JSONValue::Kind::String),
- m_data()
-{
-}
+JSONString::JSONString() : JSONValue(JSONValue::Kind::String), m_data() {}
-JSONString::JSONString (const char* s) :
- JSONValue(JSONValue::Kind::String),
- m_data(s ? s : "")
-{
-}
+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)
-{
-}
+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() <<"\"";
+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;
- }
- assert("Unhandled data type");
+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;
+ }
+ assert("Unhandled data type");
}
-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;
- }
- assert("Unhandled data type");
+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;
+ }
+ assert("Unhandled data type");
}
-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;
- }
- assert("Unhandled data type");
+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;
+ }
+ assert("Unhandled data type");
}
-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;
- }
+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)
-{
-}
+JSONTrue::JSONTrue() : JSONValue(JSONValue::Kind::True) {}
-void
-JSONTrue::Write(std::ostream& s)
-{
- s << "true";
-}
+void JSONTrue::Write(std::ostream &s) { s << "true"; }
-JSONFalse::JSONFalse () :
- JSONValue(JSONValue::Kind::False)
-{
-}
+JSONFalse::JSONFalse() : JSONValue(JSONValue::Kind::False) {}
-void
-JSONFalse::Write(std::ostream& s)
-{
- s << "false";
-}
-
-JSONNull::JSONNull () :
- JSONValue(JSONValue::Kind::Null)
-{
-}
+void JSONFalse::Write(std::ostream &s) { s << "false"; }
-void
-JSONNull::Write(std::ostream& s)
-{
- s << "null";
-}
+JSONNull::JSONNull() : JSONValue(JSONValue::Kind::Null) {}
-JSONObject::JSONObject () :
- JSONValue(JSONValue::Kind::Object)
-{
-}
+void JSONNull::Write(std::ostream &s) { s << "null"; }
-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 << '}';
-}
+JSONObject::JSONObject() : JSONValue(JSONValue::Kind::Object) {}
-bool
-JSONObject::SetObject (const std::string& key,
- JSONValue::SP value)
-{
- if (key.empty() || nullptr == value.get())
- return false;
- m_elements[key] = value;
- return true;
+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;
+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;
- }
+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;
- }
+ 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;
- }
+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;
+ if (!JSONString::classof(value_sp.get()))
+ return false;
- value = static_cast<JSONString*>(value_sp.get())->GetData();
- return true;
+ value = static_cast<JSONString *>(value_sp.get())->GetData();
+ return true;
}
-JSONArray::JSONArray () :
- JSONValue(JSONValue::Kind::Array)
-{
-}
+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 << ']';
+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;
- }
+bool JSONArray::SetObject(Index i, JSONValue::SP value) {
+ if (value.get() == nullptr)
return false;
-}
-
-bool
-JSONArray::AppendObject (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;
}
-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::Error;
-
- }
- 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::Error;
- }
- }
- else if (is_end_quote)
- {
- return Token::String;
- }
- else if (is_null)
- {
- value = "error: missing end quote for string";
- return Token::Error;
- }
- }
- }
- }
- 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::Error;
- }
- 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::Error;
- }
- 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::Error;
- }
- 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::Error;
- }
- }
- 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::Error;
- }
- }
- }
- 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::Error;
- }
- }
- }
- else
- {
- error << "error: invalid number found at offset " << start_index;
- value = error.str();
- return Token::Error;
- }
- }
- break;
- default:
- break;
- }
- error << "error: failed to parse token at offset " << start_index << " (around character '" << ch << "')";
- value = error.str();
- return Token::Error;
-}
-
-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;
+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::Error;
+
+ } 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::Error;
+ }
+ } else if (is_end_quote) {
+ return Token::String;
+ } else if (is_null) {
+ value = "error: missing end quote for string";
+ return Token::Error;
}
- 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;
- }
+ } 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;
}
- else if (token == JSONParser::Token::ObjectEnd)
- {
- return JSONValue::SP(dict_up.release());
+ ++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::Error;
+ } else {
+ got_decimal_point = true;
+ ++m_index; // Skip this character
}
- else if (token == JSONParser::Token::Comma)
- {
- continue;
+ break;
+
+ case 'e':
+ case 'E':
+ if (exp_index != 0) {
+ error << "error: extra exponent character found at offset "
+ << start_index;
+ value = error.str();
+ return Token::Error;
+ } else {
+ exp_index = m_index;
+ ++m_index; // Skip this character
}
- else
- {
- break;
+ 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::Error;
}
- }
- return JSONValue::SP();
-}
+ break;
-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;
+ default:
+ done = true;
+ break;
+ }
+ }
- JSONParser::Token token = GetToken(value);
- if (token == JSONParser::Token::Comma)
- {
- continue;
+ 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::Error;
+ }
+ } 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::Error;
+ }
}
- else if (token == JSONParser::Token::ArrayEnd)
- {
- return JSONValue::SP(array_up.release());
+ } 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::Error;
}
+ }
+ } else {
+ error << "error: invalid number found at offset " << start_index;
+ value = error.str();
+ return Token::Error;
+ }
+ } break;
+ default:
+ break;
+ }
+ error << "error: failed to parse token at offset " << start_index
+ << " (around character '" << ch << "')";
+ value = error.str();
+ return Token::Error;
+}
+
+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;
- }
+ 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();
-}
+ }
+ 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;
-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::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::String:
+ return JSONValue::SP(new JSONString(value));
- case JSONParser::Token::True:
- return JSONValue::SP(new JSONTrue());
+ case JSONParser::Token::True:
+ return JSONValue::SP(new JSONTrue());
- case JSONParser::Token::False:
- return JSONValue::SP(new JSONFalse());
+ case JSONParser::Token::False:
+ return JSONValue::SP(new JSONFalse());
- case JSONParser::Token::Null:
- return JSONValue::SP(new JSONNull());
+ case JSONParser::Token::Null:
+ return JSONValue::SP(new JSONNull());
- default:
- break;
- }
- return JSONValue::SP();
-
+ default:
+ break;
+ }
+ return JSONValue::SP();
}