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author ImJezze <jezze@gmx.net>2015-07-20 08:11:41 +0200
committer ImJezze <jezze@gmx.net>2015-07-20 08:11:41 +0200
commit4bcb0c13f50ddb1cd3fd0341b4bb31d9c3c7fc7a (patch)
tree55eccacfca0e69435d0d4e6615205310ca11f271 /3rdparty/jsoncpp/src/lib_json/json_reader.cpp
parentd132946c6f45aa8d271c6180e86f72dd08243048 (diff)
parent229785f695b26c702c8490792611f59d0366a933 (diff)
Merge pull request #5 from mamedev/master
Sync to base master
Diffstat (limited to '3rdparty/jsoncpp/src/lib_json/json_reader.cpp')
-rw-r--r--3rdparty/jsoncpp/src/lib_json/json_reader.cpp1272
1 files changed, 1182 insertions, 90 deletions
diff --git a/3rdparty/jsoncpp/src/lib_json/json_reader.cpp b/3rdparty/jsoncpp/src/lib_json/json_reader.cpp
index c5111f8d708..ceff66c3134 100644
--- a/3rdparty/jsoncpp/src/lib_json/json_reader.cpp
+++ b/3rdparty/jsoncpp/src/lib_json/json_reader.cpp
@@ -14,6 +14,9 @@
#include <cassert>
#include <cstring>
#include <istream>
+#include <sstream>
+#include <memory>
+#include <set>
#if defined(_MSC_VER) && _MSC_VER < 1500 // VC++ 8.0 and below
#define snprintf _snprintf
@@ -24,8 +27,17 @@
#pragma warning(disable : 4996)
#endif
+static int const stackLimit_g = 1000;
+static int stackDepth_g = 0; // see readValue()
+
namespace Json {
+#if __cplusplus >= 201103L
+typedef std::unique_ptr<CharReader> CharReaderPtr;
+#else
+typedef std::auto_ptr<CharReader> CharReaderPtr;
+#endif
+
// Implementation of class Features
// ////////////////////////////////
@@ -47,23 +59,6 @@ Features Features::strictMode() {
// Implementation of class Reader
// ////////////////////////////////
-static inline bool in(Reader::Char c,
- Reader::Char c1,
- Reader::Char c2,
- Reader::Char c3,
- Reader::Char c4) {
- return c == c1 || c == c2 || c == c3 || c == c4;
-}
-
-static inline bool in(Reader::Char c,
- Reader::Char c1,
- Reader::Char c2,
- Reader::Char c3,
- Reader::Char c4,
- Reader::Char c5) {
- return c == c1 || c == c2 || c == c3 || c == c4 || c == c5;
-}
-
static bool containsNewLine(Reader::Location begin, Reader::Location end) {
for (; begin < end; ++begin)
if (*begin == '\n' || *begin == '\r')
@@ -125,6 +120,7 @@ bool Reader::parse(const char* beginDoc,
nodes_.pop();
nodes_.push(&root);
+ stackDepth_g = 0; // Yes, this is bad coding, but options are limited.
bool successful = readValue();
Token token;
skipCommentTokens(token);
@@ -147,19 +143,18 @@ bool Reader::parse(const char* beginDoc,
}
bool Reader::readValue() {
+ // This is a non-reentrant way to support a stackLimit. Terrible!
+ // But this deprecated class has a security problem: Bad input can
+ // cause a seg-fault. This seems like a fair, binary-compatible way
+ // to prevent the problem.
+ if (stackDepth_g >= stackLimit_g) throwRuntimeError("Exceeded stackLimit in readValue().");
+ ++stackDepth_g;
+
Token token;
skipCommentTokens(token);
bool successful = true;
if (collectComments_ && !commentsBefore_.empty()) {
- // Remove newline characters at the end of the comments
- size_t lastNonNewline = commentsBefore_.find_last_not_of("\r\n");
- if (lastNonNewline != std::string::npos) {
- commentsBefore_.erase(lastNonNewline + 1);
- } else {
- commentsBefore_.clear();
- }
-
currentValue().setComment(commentsBefore_, commentBefore);
commentsBefore_ = "";
}
@@ -180,31 +175,42 @@ bool Reader::readValue() {
successful = decodeString(token);
break;
case tokenTrue:
- currentValue() = true;
+ {
+ Value v(true);
+ currentValue().swapPayload(v);
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
+ }
break;
case tokenFalse:
- currentValue() = false;
+ {
+ Value v(false);
+ currentValue().swapPayload(v);
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
+ }
break;
case tokenNull:
- currentValue() = Value();
+ {
+ Value v;
+ currentValue().swapPayload(v);
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
+ }
break;
case tokenArraySeparator:
+ case tokenObjectEnd:
+ case tokenArrayEnd:
if (features_.allowDroppedNullPlaceholders_) {
// "Un-read" the current token and mark the current value as a null
// token.
current_--;
- currentValue() = Value();
+ Value v;
+ currentValue().swapPayload(v);
currentValue().setOffsetStart(current_ - begin_ - 1);
currentValue().setOffsetLimit(current_ - begin_);
break;
- }
- // Else, fall through...
+ } // Else, fall through...
default:
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
@@ -216,6 +222,7 @@ bool Reader::readValue() {
lastValue_ = &currentValue();
}
+ --stackDepth_g;
return successful;
}
@@ -229,13 +236,6 @@ void Reader::skipCommentTokens(Token& token) {
}
}
-bool Reader::expectToken(TokenType type, Token& token, const char* message) {
- readToken(token);
- if (token.type_ != type)
- return addError(message, token);
- return true;
-}
-
bool Reader::readToken(Token& token) {
skipSpaces();
token.start_ = current_;
@@ -351,14 +351,34 @@ bool Reader::readComment() {
return true;
}
+static std::string normalizeEOL(Reader::Location begin, Reader::Location end) {
+ std::string normalized;
+ normalized.reserve(end - begin);
+ Reader::Location current = begin;
+ while (current != end) {
+ char c = *current++;
+ if (c == '\r') {
+ if (current != end && *current == '\n')
+ // convert dos EOL
+ ++current;
+ // convert Mac EOL
+ normalized += '\n';
+ } else {
+ normalized += c;
+ }
+ }
+ return normalized;
+}
+
void
Reader::addComment(Location begin, Location end, CommentPlacement placement) {
assert(collectComments_);
+ const std::string& normalized = normalizeEOL(begin, end);
if (placement == commentAfterOnSameLine) {
assert(lastValue_ != 0);
- lastValue_->setComment(std::string(begin, end), placement);
+ lastValue_->setComment(normalized, placement);
} else {
- commentsBefore_ += std::string(begin, end);
+ commentsBefore_ += normalized;
}
}
@@ -374,18 +394,38 @@ bool Reader::readCStyleComment() {
bool Reader::readCppStyleComment() {
while (current_ != end_) {
Char c = getNextChar();
- if (c == '\r' || c == '\n')
+ if (c == '\n')
+ break;
+ if (c == '\r') {
+ // Consume DOS EOL. It will be normalized in addComment.
+ if (current_ != end_ && *current_ == '\n')
+ getNextChar();
+ // Break on Moc OS 9 EOL.
break;
+ }
}
return true;
}
void Reader::readNumber() {
- while (current_ != end_) {
- if (!(*current_ >= '0' && *current_ <= '9') &&
- !in(*current_, '.', 'e', 'E', '+', '-'))
- break;
- ++current_;
+ const char *p = current_;
+ char c = '0'; // stopgap for already consumed character
+ // integral part
+ while (c >= '0' && c <= '9')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ // fractional part
+ if (c == '.') {
+ c = (current_ = p) < end_ ? *p++ : 0;
+ while (c >= '0' && c <= '9')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ }
+ // exponential part
+ if (c == 'e' || c == 'E') {
+ c = (current_ = p) < end_ ? *p++ : 0;
+ if (c == '+' || c == '-')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ while (c >= '0' && c <= '9')
+ c = (current_ = p) < end_ ? *p++ : 0;
}
}
@@ -404,7 +444,8 @@ bool Reader::readString() {
bool Reader::readObject(Token& tokenStart) {
Token tokenName;
std::string name;
- currentValue() = Value(objectValue);
+ Value init(objectValue);
+ currentValue().swapPayload(init);
currentValue().setOffsetStart(tokenStart.start_ - begin_);
while (readToken(tokenName)) {
bool initialTokenOk = true;
@@ -457,7 +498,8 @@ bool Reader::readObject(Token& tokenStart) {
}
bool Reader::readArray(Token& tokenStart) {
- currentValue() = Value(arrayValue);
+ Value init(arrayValue);
+ currentValue().swapPayload(init);
currentValue().setOffsetStart(tokenStart.start_ - begin_);
skipSpaces();
if (*current_ == ']') // empty array
@@ -497,20 +539,13 @@ bool Reader::decodeNumber(Token& token) {
Value decoded;
if (!decodeNumber(token, decoded))
return false;
- currentValue() = decoded;
+ currentValue().swapPayload(decoded);
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
return true;
}
bool Reader::decodeNumber(Token& token, Value& decoded) {
- bool isDouble = false;
- for (Location inspect = token.start_; inspect != token.end_; ++inspect) {
- isDouble = isDouble || in(*inspect, '.', 'e', 'E', '+') ||
- (*inspect == '-' && inspect != token.start_);
- }
- if (isDouble)
- return decodeDouble(token, decoded);
// Attempts to parse the number as an integer. If the number is
// larger than the maximum supported value of an integer then
// we decode the number as a double.
@@ -518,6 +553,7 @@ bool Reader::decodeNumber(Token& token, Value& decoded) {
bool isNegative = *current == '-';
if (isNegative)
++current;
+ // TODO: Help the compiler do the div and mod at compile time or get rid of them.
Value::LargestUInt maxIntegerValue =
isNegative ? Value::LargestUInt(-Value::minLargestInt)
: Value::maxLargestUInt;
@@ -526,9 +562,7 @@ bool Reader::decodeNumber(Token& token, Value& decoded) {
while (current < token.end_) {
Char c = *current++;
if (c < '0' || c > '9')
- return addError("'" + std::string(token.start_, token.end_) +
- "' is not a number.",
- token);
+ return decodeDouble(token, decoded);
Value::UInt digit(c - '0');
if (value >= threshold) {
// We've hit or exceeded the max value divided by 10 (rounded down). If
@@ -555,7 +589,7 @@ bool Reader::decodeDouble(Token& token) {
Value decoded;
if (!decodeDouble(token, decoded))
return false;
- currentValue() = decoded;
+ currentValue().swapPayload(decoded);
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
return true;
@@ -563,6 +597,945 @@ bool Reader::decodeDouble(Token& token) {
bool Reader::decodeDouble(Token& token, Value& decoded) {
double value = 0;
+ std::string buffer(token.start_, token.end_);
+ std::istringstream is(buffer);
+ if (!(is >> value))
+ return addError("'" + std::string(token.start_, token.end_) +
+ "' is not a number.",
+ token);
+ decoded = value;
+ return true;
+}
+
+bool Reader::decodeString(Token& token) {
+ std::string decoded_string;
+ if (!decodeString(token, decoded_string))
+ return false;
+ Value decoded(decoded_string);
+ currentValue().swapPayload(decoded);
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ return true;
+}
+
+bool Reader::decodeString(Token& token, std::string& decoded) {
+ decoded.reserve(token.end_ - token.start_ - 2);
+ Location current = token.start_ + 1; // skip '"'
+ Location end = token.end_ - 1; // do not include '"'
+ while (current != end) {
+ Char c = *current++;
+ if (c == '"')
+ break;
+ else if (c == '\\') {
+ if (current == end)
+ return addError("Empty escape sequence in string", token, current);
+ Char escape = *current++;
+ switch (escape) {
+ case '"':
+ decoded += '"';
+ break;
+ case '/':
+ decoded += '/';
+ break;
+ case '\\':
+ decoded += '\\';
+ break;
+ case 'b':
+ decoded += '\b';
+ break;
+ case 'f':
+ decoded += '\f';
+ break;
+ case 'n':
+ decoded += '\n';
+ break;
+ case 'r':
+ decoded += '\r';
+ break;
+ case 't':
+ decoded += '\t';
+ break;
+ case 'u': {
+ unsigned int unicode;
+ if (!decodeUnicodeCodePoint(token, current, end, unicode))
+ return false;
+ decoded += codePointToUTF8(unicode);
+ } break;
+ default:
+ return addError("Bad escape sequence in string", token, current);
+ }
+ } else {
+ decoded += c;
+ }
+ }
+ return true;
+}
+
+bool Reader::decodeUnicodeCodePoint(Token& token,
+ Location& current,
+ Location end,
+ unsigned int& unicode) {
+
+ if (!decodeUnicodeEscapeSequence(token, current, end, unicode))
+ return false;
+ if (unicode >= 0xD800 && unicode <= 0xDBFF) {
+ // surrogate pairs
+ if (end - current < 6)
+ return addError(
+ "additional six characters expected to parse unicode surrogate pair.",
+ token,
+ current);
+ unsigned int surrogatePair;
+ if (*(current++) == '\\' && *(current++) == 'u') {
+ if (decodeUnicodeEscapeSequence(token, current, end, surrogatePair)) {
+ unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
+ } else
+ return false;
+ } else
+ return addError("expecting another \\u token to begin the second half of "
+ "a unicode surrogate pair",
+ token,
+ current);
+ }
+ return true;
+}
+
+bool Reader::decodeUnicodeEscapeSequence(Token& token,
+ Location& current,
+ Location end,
+ unsigned int& unicode) {
+ if (end - current < 4)
+ return addError(
+ "Bad unicode escape sequence in string: four digits expected.",
+ token,
+ current);
+ unicode = 0;
+ for (int index = 0; index < 4; ++index) {
+ Char c = *current++;
+ unicode *= 16;
+ if (c >= '0' && c <= '9')
+ unicode += c - '0';
+ else if (c >= 'a' && c <= 'f')
+ unicode += c - 'a' + 10;
+ else if (c >= 'A' && c <= 'F')
+ unicode += c - 'A' + 10;
+ else
+ return addError(
+ "Bad unicode escape sequence in string: hexadecimal digit expected.",
+ token,
+ current);
+ }
+ return true;
+}
+
+bool
+Reader::addError(const std::string& message, Token& token, Location extra) {
+ ErrorInfo info;
+ info.token_ = token;
+ info.message_ = message;
+ info.extra_ = extra;
+ errors_.push_back(info);
+ return false;
+}
+
+bool Reader::recoverFromError(TokenType skipUntilToken) {
+ int errorCount = int(errors_.size());
+ Token skip;
+ for (;;) {
+ if (!readToken(skip))
+ errors_.resize(errorCount); // discard errors caused by recovery
+ if (skip.type_ == skipUntilToken || skip.type_ == tokenEndOfStream)
+ break;
+ }
+ errors_.resize(errorCount);
+ return false;
+}
+
+bool Reader::addErrorAndRecover(const std::string& message,
+ Token& token,
+ TokenType skipUntilToken) {
+ addError(message, token);
+ return recoverFromError(skipUntilToken);
+}
+
+Value& Reader::currentValue() { return *(nodes_.top()); }
+
+Reader::Char Reader::getNextChar() {
+ if (current_ == end_)
+ return 0;
+ return *current_++;
+}
+
+void Reader::getLocationLineAndColumn(Location location,
+ int& line,
+ int& column) const {
+ Location current = begin_;
+ Location lastLineStart = current;
+ line = 0;
+ while (current < location && current != end_) {
+ Char c = *current++;
+ if (c == '\r') {
+ if (*current == '\n')
+ ++current;
+ lastLineStart = current;
+ ++line;
+ } else if (c == '\n') {
+ lastLineStart = current;
+ ++line;
+ }
+ }
+ // column & line start at 1
+ column = int(location - lastLineStart) + 1;
+ ++line;
+}
+
+std::string Reader::getLocationLineAndColumn(Location location) const {
+ int line, column;
+ getLocationLineAndColumn(location, line, column);
+ char buffer[18 + 16 + 16 + 1];
+#if defined(_MSC_VER) && defined(__STDC_SECURE_LIB__)
+#if defined(WINCE)
+ _snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
+#else
+ sprintf_s(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
+#endif
+#else
+ snprintf(buffer, sizeof(buffer), "Line %d, Column %d", line, column);
+#endif
+ return buffer;
+}
+
+// Deprecated. Preserved for backward compatibility
+std::string Reader::getFormatedErrorMessages() const {
+ return getFormattedErrorMessages();
+}
+
+std::string Reader::getFormattedErrorMessages() const {
+ std::string formattedMessage;
+ for (Errors::const_iterator itError = errors_.begin();
+ itError != errors_.end();
+ ++itError) {
+ const ErrorInfo& error = *itError;
+ formattedMessage +=
+ "* " + getLocationLineAndColumn(error.token_.start_) + "\n";
+ formattedMessage += " " + error.message_ + "\n";
+ if (error.extra_)
+ formattedMessage +=
+ "See " + getLocationLineAndColumn(error.extra_) + " for detail.\n";
+ }
+ return formattedMessage;
+}
+
+std::vector<Reader::StructuredError> Reader::getStructuredErrors() const {
+ std::vector<Reader::StructuredError> allErrors;
+ for (Errors::const_iterator itError = errors_.begin();
+ itError != errors_.end();
+ ++itError) {
+ const ErrorInfo& error = *itError;
+ Reader::StructuredError structured;
+ structured.offset_start = error.token_.start_ - begin_;
+ structured.offset_limit = error.token_.end_ - begin_;
+ structured.message = error.message_;
+ allErrors.push_back(structured);
+ }
+ return allErrors;
+}
+
+bool Reader::pushError(const Value& value, const std::string& message) {
+ size_t length = end_ - begin_;
+ if(value.getOffsetStart() > length
+ || value.getOffsetLimit() > length)
+ return false;
+ Token token;
+ token.type_ = tokenError;
+ token.start_ = begin_ + value.getOffsetStart();
+ token.end_ = end_ + value.getOffsetLimit();
+ ErrorInfo info;
+ info.token_ = token;
+ info.message_ = message;
+ info.extra_ = 0;
+ errors_.push_back(info);
+ return true;
+}
+
+bool Reader::pushError(const Value& value, const std::string& message, const Value& extra) {
+ size_t length = end_ - begin_;
+ if(value.getOffsetStart() > length
+ || value.getOffsetLimit() > length
+ || extra.getOffsetLimit() > length)
+ return false;
+ Token token;
+ token.type_ = tokenError;
+ token.start_ = begin_ + value.getOffsetStart();
+ token.end_ = begin_ + value.getOffsetLimit();
+ ErrorInfo info;
+ info.token_ = token;
+ info.message_ = message;
+ info.extra_ = begin_ + extra.getOffsetStart();
+ errors_.push_back(info);
+ return true;
+}
+
+bool Reader::good() const {
+ return !errors_.size();
+}
+
+// exact copy of Features
+class OurFeatures {
+public:
+ static OurFeatures all();
+ OurFeatures();
+ bool allowComments_;
+ bool strictRoot_;
+ bool allowDroppedNullPlaceholders_;
+ bool allowNumericKeys_;
+ bool allowSingleQuotes_;
+ bool failIfExtra_;
+ bool rejectDupKeys_;
+ int stackLimit_;
+}; // OurFeatures
+
+// exact copy of Implementation of class Features
+// ////////////////////////////////
+
+OurFeatures::OurFeatures()
+ : allowComments_(true), strictRoot_(false)
+ , allowDroppedNullPlaceholders_(false), allowNumericKeys_(false)
+ , allowSingleQuotes_(false)
+ , failIfExtra_(false)
+{
+}
+
+OurFeatures OurFeatures::all() { return OurFeatures(); }
+
+// Implementation of class Reader
+// ////////////////////////////////
+
+// exact copy of Reader, renamed to OurReader
+class OurReader {
+public:
+ typedef char Char;
+ typedef const Char* Location;
+ struct StructuredError {
+ size_t offset_start;
+ size_t offset_limit;
+ std::string message;
+ };
+
+ OurReader(OurFeatures const& features);
+ bool parse(const char* beginDoc,
+ const char* endDoc,
+ Value& root,
+ bool collectComments = true);
+ std::string getFormattedErrorMessages() const;
+ std::vector<StructuredError> getStructuredErrors() const;
+ bool pushError(const Value& value, const std::string& message);
+ bool pushError(const Value& value, const std::string& message, const Value& extra);
+ bool good() const;
+
+private:
+ OurReader(OurReader const&); // no impl
+ void operator=(OurReader const&); // no impl
+
+ enum TokenType {
+ tokenEndOfStream = 0,
+ tokenObjectBegin,
+ tokenObjectEnd,
+ tokenArrayBegin,
+ tokenArrayEnd,
+ tokenString,
+ tokenNumber,
+ tokenTrue,
+ tokenFalse,
+ tokenNull,
+ tokenArraySeparator,
+ tokenMemberSeparator,
+ tokenComment,
+ tokenError
+ };
+
+ class Token {
+ public:
+ TokenType type_;
+ Location start_;
+ Location end_;
+ };
+
+ class ErrorInfo {
+ public:
+ Token token_;
+ std::string message_;
+ Location extra_;
+ };
+
+ typedef std::deque<ErrorInfo> Errors;
+
+ bool readToken(Token& token);
+ void skipSpaces();
+ bool match(Location pattern, int patternLength);
+ bool readComment();
+ bool readCStyleComment();
+ bool readCppStyleComment();
+ bool readString();
+ bool readStringSingleQuote();
+ void readNumber();
+ bool readValue();
+ bool readObject(Token& token);
+ bool readArray(Token& token);
+ bool decodeNumber(Token& token);
+ bool decodeNumber(Token& token, Value& decoded);
+ bool decodeString(Token& token);
+ bool decodeString(Token& token, std::string& decoded);
+ bool decodeDouble(Token& token);
+ bool decodeDouble(Token& token, Value& decoded);
+ bool decodeUnicodeCodePoint(Token& token,
+ Location& current,
+ Location end,
+ unsigned int& unicode);
+ bool decodeUnicodeEscapeSequence(Token& token,
+ Location& current,
+ Location end,
+ unsigned int& unicode);
+ bool addError(const std::string& message, Token& token, Location extra = 0);
+ bool recoverFromError(TokenType skipUntilToken);
+ bool addErrorAndRecover(const std::string& message,
+ Token& token,
+ TokenType skipUntilToken);
+ void skipUntilSpace();
+ Value& currentValue();
+ Char getNextChar();
+ void
+ getLocationLineAndColumn(Location location, int& line, int& column) const;
+ std::string getLocationLineAndColumn(Location location) const;
+ void addComment(Location begin, Location end, CommentPlacement placement);
+ void skipCommentTokens(Token& token);
+
+ typedef std::stack<Value*> Nodes;
+ Nodes nodes_;
+ Errors errors_;
+ std::string document_;
+ Location begin_;
+ Location end_;
+ Location current_;
+ Location lastValueEnd_;
+ Value* lastValue_;
+ std::string commentsBefore_;
+ int stackDepth_;
+
+ OurFeatures const features_;
+ bool collectComments_;
+}; // OurReader
+
+// complete copy of Read impl, for OurReader
+
+OurReader::OurReader(OurFeatures const& features)
+ : errors_(), document_(), begin_(), end_(), current_(), lastValueEnd_(),
+ lastValue_(), commentsBefore_(), features_(features), collectComments_() {
+}
+
+bool OurReader::parse(const char* beginDoc,
+ const char* endDoc,
+ Value& root,
+ bool collectComments) {
+ if (!features_.allowComments_) {
+ collectComments = false;
+ }
+
+ begin_ = beginDoc;
+ end_ = endDoc;
+ collectComments_ = collectComments;
+ current_ = begin_;
+ lastValueEnd_ = 0;
+ lastValue_ = 0;
+ commentsBefore_ = "";
+ errors_.clear();
+ while (!nodes_.empty())
+ nodes_.pop();
+ nodes_.push(&root);
+
+ stackDepth_ = 0;
+ bool successful = readValue();
+ Token token;
+ skipCommentTokens(token);
+ if (features_.failIfExtra_) {
+ if (token.type_ != tokenError && token.type_ != tokenEndOfStream) {
+ addError("Extra non-whitespace after JSON value.", token);
+ return false;
+ }
+ }
+ if (collectComments_ && !commentsBefore_.empty())
+ root.setComment(commentsBefore_, commentAfter);
+ if (features_.strictRoot_) {
+ if (!root.isArray() && !root.isObject()) {
+ // Set error location to start of doc, ideally should be first token found
+ // in doc
+ token.type_ = tokenError;
+ token.start_ = beginDoc;
+ token.end_ = endDoc;
+ addError(
+ "A valid JSON document must be either an array or an object value.",
+ token);
+ return false;
+ }
+ }
+ return successful;
+}
+
+bool OurReader::readValue() {
+ if (stackDepth_ >= features_.stackLimit_) throwRuntimeError("Exceeded stackLimit in readValue().");
+ ++stackDepth_;
+ Token token;
+ skipCommentTokens(token);
+ bool successful = true;
+
+ if (collectComments_ && !commentsBefore_.empty()) {
+ currentValue().setComment(commentsBefore_, commentBefore);
+ commentsBefore_ = "";
+ }
+
+ switch (token.type_) {
+ case tokenObjectBegin:
+ successful = readObject(token);
+ currentValue().setOffsetLimit(current_ - begin_);
+ break;
+ case tokenArrayBegin:
+ successful = readArray(token);
+ currentValue().setOffsetLimit(current_ - begin_);
+ break;
+ case tokenNumber:
+ successful = decodeNumber(token);
+ break;
+ case tokenString:
+ successful = decodeString(token);
+ break;
+ case tokenTrue:
+ {
+ Value v(true);
+ currentValue().swapPayload(v);
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ }
+ break;
+ case tokenFalse:
+ {
+ Value v(false);
+ currentValue().swapPayload(v);
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ }
+ break;
+ case tokenNull:
+ {
+ Value v;
+ currentValue().swapPayload(v);
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ }
+ break;
+ case tokenArraySeparator:
+ case tokenObjectEnd:
+ case tokenArrayEnd:
+ if (features_.allowDroppedNullPlaceholders_) {
+ // "Un-read" the current token and mark the current value as a null
+ // token.
+ current_--;
+ Value v;
+ currentValue().swapPayload(v);
+ currentValue().setOffsetStart(current_ - begin_ - 1);
+ currentValue().setOffsetLimit(current_ - begin_);
+ break;
+ } // else, fall through ...
+ default:
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ return addError("Syntax error: value, object or array expected.", token);
+ }
+
+ if (collectComments_) {
+ lastValueEnd_ = current_;
+ lastValue_ = &currentValue();
+ }
+
+ --stackDepth_;
+ return successful;
+}
+
+void OurReader::skipCommentTokens(Token& token) {
+ if (features_.allowComments_) {
+ do {
+ readToken(token);
+ } while (token.type_ == tokenComment);
+ } else {
+ readToken(token);
+ }
+}
+
+bool OurReader::readToken(Token& token) {
+ skipSpaces();
+ token.start_ = current_;
+ Char c = getNextChar();
+ bool ok = true;
+ switch (c) {
+ case '{':
+ token.type_ = tokenObjectBegin;
+ break;
+ case '}':
+ token.type_ = tokenObjectEnd;
+ break;
+ case '[':
+ token.type_ = tokenArrayBegin;
+ break;
+ case ']':
+ token.type_ = tokenArrayEnd;
+ break;
+ case '"':
+ token.type_ = tokenString;
+ ok = readString();
+ break;
+ case '\'':
+ if (features_.allowSingleQuotes_) {
+ token.type_ = tokenString;
+ ok = readStringSingleQuote();
+ break;
+ } // else continue
+ case '/':
+ token.type_ = tokenComment;
+ ok = readComment();
+ break;
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case '-':
+ token.type_ = tokenNumber;
+ readNumber();
+ break;
+ case 't':
+ token.type_ = tokenTrue;
+ ok = match("rue", 3);
+ break;
+ case 'f':
+ token.type_ = tokenFalse;
+ ok = match("alse", 4);
+ break;
+ case 'n':
+ token.type_ = tokenNull;
+ ok = match("ull", 3);
+ break;
+ case ',':
+ token.type_ = tokenArraySeparator;
+ break;
+ case ':':
+ token.type_ = tokenMemberSeparator;
+ break;
+ case 0:
+ token.type_ = tokenEndOfStream;
+ break;
+ default:
+ ok = false;
+ break;
+ }
+ if (!ok)
+ token.type_ = tokenError;
+ token.end_ = current_;
+ return true;
+}
+
+void OurReader::skipSpaces() {
+ while (current_ != end_) {
+ Char c = *current_;
+ if (c == ' ' || c == '\t' || c == '\r' || c == '\n')
+ ++current_;
+ else
+ break;
+ }
+}
+
+bool OurReader::match(Location pattern, int patternLength) {
+ if (end_ - current_ < patternLength)
+ return false;
+ int index = patternLength;
+ while (index--)
+ if (current_[index] != pattern[index])
+ return false;
+ current_ += patternLength;
+ return true;
+}
+
+bool OurReader::readComment() {
+ Location commentBegin = current_ - 1;
+ Char c = getNextChar();
+ bool successful = false;
+ if (c == '*')
+ successful = readCStyleComment();
+ else if (c == '/')
+ successful = readCppStyleComment();
+ if (!successful)
+ return false;
+
+ if (collectComments_) {
+ CommentPlacement placement = commentBefore;
+ if (lastValueEnd_ && !containsNewLine(lastValueEnd_, commentBegin)) {
+ if (c != '*' || !containsNewLine(commentBegin, current_))
+ placement = commentAfterOnSameLine;
+ }
+
+ addComment(commentBegin, current_, placement);
+ }
+ return true;
+}
+
+void
+OurReader::addComment(Location begin, Location end, CommentPlacement placement) {
+ assert(collectComments_);
+ const std::string& normalized = normalizeEOL(begin, end);
+ if (placement == commentAfterOnSameLine) {
+ assert(lastValue_ != 0);
+ lastValue_->setComment(normalized, placement);
+ } else {
+ commentsBefore_ += normalized;
+ }
+}
+
+bool OurReader::readCStyleComment() {
+ while (current_ != end_) {
+ Char c = getNextChar();
+ if (c == '*' && *current_ == '/')
+ break;
+ }
+ return getNextChar() == '/';
+}
+
+bool OurReader::readCppStyleComment() {
+ while (current_ != end_) {
+ Char c = getNextChar();
+ if (c == '\n')
+ break;
+ if (c == '\r') {
+ // Consume DOS EOL. It will be normalized in addComment.
+ if (current_ != end_ && *current_ == '\n')
+ getNextChar();
+ // Break on Moc OS 9 EOL.
+ break;
+ }
+ }
+ return true;
+}
+
+void OurReader::readNumber() {
+ const char *p = current_;
+ char c = '0'; // stopgap for already consumed character
+ // integral part
+ while (c >= '0' && c <= '9')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ // fractional part
+ if (c == '.') {
+ c = (current_ = p) < end_ ? *p++ : 0;
+ while (c >= '0' && c <= '9')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ }
+ // exponential part
+ if (c == 'e' || c == 'E') {
+ c = (current_ = p) < end_ ? *p++ : 0;
+ if (c == '+' || c == '-')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ while (c >= '0' && c <= '9')
+ c = (current_ = p) < end_ ? *p++ : 0;
+ }
+}
+bool OurReader::readString() {
+ Char c = 0;
+ while (current_ != end_) {
+ c = getNextChar();
+ if (c == '\\')
+ getNextChar();
+ else if (c == '"')
+ break;
+ }
+ return c == '"';
+}
+
+
+bool OurReader::readStringSingleQuote() {
+ Char c = 0;
+ while (current_ != end_) {
+ c = getNextChar();
+ if (c == '\\')
+ getNextChar();
+ else if (c == '\'')
+ break;
+ }
+ return c == '\'';
+}
+
+bool OurReader::readObject(Token& tokenStart) {
+ Token tokenName;
+ std::string name;
+ Value init(objectValue);
+ currentValue().swapPayload(init);
+ currentValue().setOffsetStart(tokenStart.start_ - begin_);
+ while (readToken(tokenName)) {
+ bool initialTokenOk = true;
+ while (tokenName.type_ == tokenComment && initialTokenOk)
+ initialTokenOk = readToken(tokenName);
+ if (!initialTokenOk)
+ break;
+ if (tokenName.type_ == tokenObjectEnd && name.empty()) // empty object
+ return true;
+ name = "";
+ if (tokenName.type_ == tokenString) {
+ if (!decodeString(tokenName, name))
+ return recoverFromError(tokenObjectEnd);
+ } else if (tokenName.type_ == tokenNumber && features_.allowNumericKeys_) {
+ Value numberName;
+ if (!decodeNumber(tokenName, numberName))
+ return recoverFromError(tokenObjectEnd);
+ name = numberName.asString();
+ } else {
+ break;
+ }
+
+ Token colon;
+ if (!readToken(colon) || colon.type_ != tokenMemberSeparator) {
+ return addErrorAndRecover(
+ "Missing ':' after object member name", colon, tokenObjectEnd);
+ }
+ if (name.length() >= (1U<<30)) throwRuntimeError("keylength >= 2^30");
+ if (features_.rejectDupKeys_ && currentValue().isMember(name)) {
+ std::string msg = "Duplicate key: '" + name + "'";
+ return addErrorAndRecover(
+ msg, tokenName, tokenObjectEnd);
+ }
+ Value& value = currentValue()[name];
+ nodes_.push(&value);
+ bool ok = readValue();
+ nodes_.pop();
+ if (!ok) // error already set
+ return recoverFromError(tokenObjectEnd);
+
+ Token comma;
+ if (!readToken(comma) ||
+ (comma.type_ != tokenObjectEnd && comma.type_ != tokenArraySeparator &&
+ comma.type_ != tokenComment)) {
+ return addErrorAndRecover(
+ "Missing ',' or '}' in object declaration", comma, tokenObjectEnd);
+ }
+ bool finalizeTokenOk = true;
+ while (comma.type_ == tokenComment && finalizeTokenOk)
+ finalizeTokenOk = readToken(comma);
+ if (comma.type_ == tokenObjectEnd)
+ return true;
+ }
+ return addErrorAndRecover(
+ "Missing '}' or object member name", tokenName, tokenObjectEnd);
+}
+
+bool OurReader::readArray(Token& tokenStart) {
+ Value init(arrayValue);
+ currentValue().swapPayload(init);
+ currentValue().setOffsetStart(tokenStart.start_ - begin_);
+ skipSpaces();
+ if (*current_ == ']') // empty array
+ {
+ Token endArray;
+ readToken(endArray);
+ return true;
+ }
+ int index = 0;
+ for (;;) {
+ Value& value = currentValue()[index++];
+ nodes_.push(&value);
+ bool ok = readValue();
+ nodes_.pop();
+ if (!ok) // error already set
+ return recoverFromError(tokenArrayEnd);
+
+ Token token;
+ // Accept Comment after last item in the array.
+ ok = readToken(token);
+ while (token.type_ == tokenComment && ok) {
+ ok = readToken(token);
+ }
+ bool badTokenType =
+ (token.type_ != tokenArraySeparator && token.type_ != tokenArrayEnd);
+ if (!ok || badTokenType) {
+ return addErrorAndRecover(
+ "Missing ',' or ']' in array declaration", token, tokenArrayEnd);
+ }
+ if (token.type_ == tokenArrayEnd)
+ break;
+ }
+ return true;
+}
+
+bool OurReader::decodeNumber(Token& token) {
+ Value decoded;
+ if (!decodeNumber(token, decoded))
+ return false;
+ currentValue().swapPayload(decoded);
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ return true;
+}
+
+bool OurReader::decodeNumber(Token& token, Value& decoded) {
+ // Attempts to parse the number as an integer. If the number is
+ // larger than the maximum supported value of an integer then
+ // we decode the number as a double.
+ Location current = token.start_;
+ bool isNegative = *current == '-';
+ if (isNegative)
+ ++current;
+ // TODO: Help the compiler do the div and mod at compile time or get rid of them.
+ Value::LargestUInt maxIntegerValue =
+ isNegative ? Value::LargestUInt(-Value::minLargestInt)
+ : Value::maxLargestUInt;
+ Value::LargestUInt threshold = maxIntegerValue / 10;
+ Value::LargestUInt value = 0;
+ while (current < token.end_) {
+ Char c = *current++;
+ if (c < '0' || c > '9')
+ return decodeDouble(token, decoded);
+ Value::UInt digit(c - '0');
+ if (value >= threshold) {
+ // We've hit or exceeded the max value divided by 10 (rounded down). If
+ // a) we've only just touched the limit, b) this is the last digit, and
+ // c) it's small enough to fit in that rounding delta, we're okay.
+ // Otherwise treat this number as a double to avoid overflow.
+ if (value > threshold || current != token.end_ ||
+ digit > maxIntegerValue % 10) {
+ return decodeDouble(token, decoded);
+ }
+ }
+ value = value * 10 + digit;
+ }
+ if (isNegative)
+ decoded = -Value::LargestInt(value);
+ else if (value <= Value::LargestUInt(Value::maxInt))
+ decoded = Value::LargestInt(value);
+ else
+ decoded = value;
+ return true;
+}
+
+bool OurReader::decodeDouble(Token& token) {
+ Value decoded;
+ if (!decodeDouble(token, decoded))
+ return false;
+ currentValue().swapPayload(decoded);
+ currentValue().setOffsetStart(token.start_ - begin_);
+ currentValue().setOffsetLimit(token.end_ - begin_);
+ return true;
+}
+
+bool OurReader::decodeDouble(Token& token, Value& decoded) {
+ double value = 0;
const int bufferSize = 32;
int count;
int length = int(token.end_ - token.start_);
@@ -597,17 +1570,18 @@ bool Reader::decodeDouble(Token& token, Value& decoded) {
return true;
}
-bool Reader::decodeString(Token& token) {
- std::string decoded;
- if (!decodeString(token, decoded))
+bool OurReader::decodeString(Token& token) {
+ std::string decoded_string;
+ if (!decodeString(token, decoded_string))
return false;
- currentValue() = decoded;
+ Value decoded(decoded_string);
+ currentValue().swapPayload(decoded);
currentValue().setOffsetStart(token.start_ - begin_);
currentValue().setOffsetLimit(token.end_ - begin_);
return true;
}
-bool Reader::decodeString(Token& token, std::string& decoded) {
+bool OurReader::decodeString(Token& token, std::string& decoded) {
decoded.reserve(token.end_ - token.start_ - 2);
Location current = token.start_ + 1; // skip '"'
Location end = token.end_ - 1; // do not include '"'
@@ -660,7 +1634,7 @@ bool Reader::decodeString(Token& token, std::string& decoded) {
return true;
}
-bool Reader::decodeUnicodeCodePoint(Token& token,
+bool OurReader::decodeUnicodeCodePoint(Token& token,
Location& current,
Location end,
unsigned int& unicode) {
@@ -689,7 +1663,7 @@ bool Reader::decodeUnicodeCodePoint(Token& token,
return true;
}
-bool Reader::decodeUnicodeEscapeSequence(Token& token,
+bool OurReader::decodeUnicodeEscapeSequence(Token& token,
Location& current,
Location end,
unsigned int& unicode) {
@@ -718,7 +1692,7 @@ bool Reader::decodeUnicodeEscapeSequence(Token& token,
}
bool
-Reader::addError(const std::string& message, Token& token, Location extra) {
+OurReader::addError(const std::string& message, Token& token, Location extra) {
ErrorInfo info;
info.token_ = token;
info.message_ = message;
@@ -727,7 +1701,7 @@ Reader::addError(const std::string& message, Token& token, Location extra) {
return false;
}
-bool Reader::recoverFromError(TokenType skipUntilToken) {
+bool OurReader::recoverFromError(TokenType skipUntilToken) {
int errorCount = int(errors_.size());
Token skip;
for (;;) {
@@ -740,22 +1714,22 @@ bool Reader::recoverFromError(TokenType skipUntilToken) {
return false;
}
-bool Reader::addErrorAndRecover(const std::string& message,
+bool OurReader::addErrorAndRecover(const std::string& message,
Token& token,
TokenType skipUntilToken) {
addError(message, token);
return recoverFromError(skipUntilToken);
}
-Value& Reader::currentValue() { return *(nodes_.top()); }
+Value& OurReader::currentValue() { return *(nodes_.top()); }
-Reader::Char Reader::getNextChar() {
+OurReader::Char OurReader::getNextChar() {
if (current_ == end_)
return 0;
return *current_++;
}
-void Reader::getLocationLineAndColumn(Location location,
+void OurReader::getLocationLineAndColumn(Location location,
int& line,
int& column) const {
Location current = begin_;
@@ -778,7 +1752,7 @@ void Reader::getLocationLineAndColumn(Location location,
++line;
}
-std::string Reader::getLocationLineAndColumn(Location location) const {
+std::string OurReader::getLocationLineAndColumn(Location location) const {
int line, column;
getLocationLineAndColumn(location, line, column);
char buffer[18 + 16 + 16 + 1];
@@ -794,12 +1768,7 @@ std::string Reader::getLocationLineAndColumn(Location location) const {
return buffer;
}
-// Deprecated. Preserved for backward compatibility
-std::string Reader::getFormatedErrorMessages() const {
- return getFormattedErrorMessages();
-}
-
-std::string Reader::getFormattedErrorMessages() const {
+std::string OurReader::getFormattedErrorMessages() const {
std::string formattedMessage;
for (Errors::const_iterator itError = errors_.begin();
itError != errors_.end();
@@ -815,13 +1784,13 @@ std::string Reader::getFormattedErrorMessages() const {
return formattedMessage;
}
-std::vector<Reader::StructuredError> Reader::getStructuredErrors() const {
- std::vector<Reader::StructuredError> allErrors;
+std::vector<OurReader::StructuredError> OurReader::getStructuredErrors() const {
+ std::vector<OurReader::StructuredError> allErrors;
for (Errors::const_iterator itError = errors_.begin();
itError != errors_.end();
++itError) {
const ErrorInfo& error = *itError;
- Reader::StructuredError structured;
+ OurReader::StructuredError structured;
structured.offset_start = error.token_.start_ - begin_;
structured.offset_limit = error.token_.end_ - begin_;
structured.message = error.message_;
@@ -830,7 +1799,7 @@ std::vector<Reader::StructuredError> Reader::getStructuredErrors() const {
return allErrors;
}
-bool Reader::pushError(const Value& value, const std::string& message) {
+bool OurReader::pushError(const Value& value, const std::string& message) {
size_t length = end_ - begin_;
if(value.getOffsetStart() > length
|| value.getOffsetLimit() > length)
@@ -847,7 +1816,7 @@ bool Reader::pushError(const Value& value, const std::string& message) {
return true;
}
-bool Reader::pushError(const Value& value, const std::string& message, const Value& extra) {
+bool OurReader::pushError(const Value& value, const std::string& message, const Value& extra) {
size_t length = end_ - begin_;
if(value.getOffsetStart() > length
|| value.getOffsetLimit() > length
@@ -865,19 +1834,142 @@ bool Reader::pushError(const Value& value, const std::string& message, const Val
return true;
}
-bool Reader::good() const {
+bool OurReader::good() const {
return !errors_.size();
}
+
+class OurCharReader : public CharReader {
+ bool const collectComments_;
+ OurReader reader_;
+public:
+ OurCharReader(
+ bool collectComments,
+ OurFeatures const& features)
+ : collectComments_(collectComments)
+ , reader_(features)
+ {}
+ virtual bool parse(
+ char const* beginDoc, char const* endDoc,
+ Value* root, std::string* errs) {
+ bool ok = reader_.parse(beginDoc, endDoc, *root, collectComments_);
+ if (errs) {
+ *errs = reader_.getFormattedErrorMessages();
+ }
+ return ok;
+ }
+};
+
+CharReaderBuilder::CharReaderBuilder()
+{
+ setDefaults(&settings_);
+}
+CharReaderBuilder::~CharReaderBuilder()
+{}
+CharReader* CharReaderBuilder::newCharReader() const
+{
+ bool collectComments = settings_["collectComments"].asBool();
+ OurFeatures features = OurFeatures::all();
+ features.allowComments_ = settings_["allowComments"].asBool();
+ features.strictRoot_ = settings_["strictRoot"].asBool();
+ features.allowDroppedNullPlaceholders_ = settings_["allowDroppedNullPlaceholders"].asBool();
+ features.allowNumericKeys_ = settings_["allowNumericKeys"].asBool();
+ features.allowSingleQuotes_ = settings_["allowSingleQuotes"].asBool();
+ features.stackLimit_ = settings_["stackLimit"].asInt();
+ features.failIfExtra_ = settings_["failIfExtra"].asBool();
+ features.rejectDupKeys_ = settings_["rejectDupKeys"].asBool();
+ return new OurCharReader(collectComments, features);
+}
+static void getValidReaderKeys(std::set<std::string>* valid_keys)
+{
+ valid_keys->clear();
+ valid_keys->insert("collectComments");
+ valid_keys->insert("allowComments");
+ valid_keys->insert("strictRoot");
+ valid_keys->insert("allowDroppedNullPlaceholders");
+ valid_keys->insert("allowNumericKeys");
+ valid_keys->insert("allowSingleQuotes");
+ valid_keys->insert("stackLimit");
+ valid_keys->insert("failIfExtra");
+ valid_keys->insert("rejectDupKeys");
+}
+bool CharReaderBuilder::validate(Json::Value* invalid) const
+{
+ Json::Value my_invalid;
+ if (!invalid) invalid = &my_invalid; // so we do not need to test for NULL
+ Json::Value& inv = *invalid;
+ std::set<std::string> valid_keys;
+ getValidReaderKeys(&valid_keys);
+ Value::Members keys = settings_.getMemberNames();
+ size_t n = keys.size();
+ for (size_t i = 0; i < n; ++i) {
+ std::string const& key = keys[i];
+ if (valid_keys.find(key) == valid_keys.end()) {
+ inv[key] = settings_[key];
+ }
+ }
+ return 0u == inv.size();
+}
+Value& CharReaderBuilder::operator[](std::string key)
+{
+ return settings_[key];
+}
+// static
+void CharReaderBuilder::strictMode(Json::Value* settings)
+{
+//! [CharReaderBuilderStrictMode]
+ (*settings)["allowComments"] = false;
+ (*settings)["strictRoot"] = true;
+ (*settings)["allowDroppedNullPlaceholders"] = false;
+ (*settings)["allowNumericKeys"] = false;
+ (*settings)["allowSingleQuotes"] = false;
+ (*settings)["failIfExtra"] = true;
+ (*settings)["rejectDupKeys"] = true;
+//! [CharReaderBuilderStrictMode]
+}
+// static
+void CharReaderBuilder::setDefaults(Json::Value* settings)
+{
+//! [CharReaderBuilderDefaults]
+ (*settings)["collectComments"] = true;
+ (*settings)["allowComments"] = true;
+ (*settings)["strictRoot"] = false;
+ (*settings)["allowDroppedNullPlaceholders"] = false;
+ (*settings)["allowNumericKeys"] = false;
+ (*settings)["allowSingleQuotes"] = false;
+ (*settings)["stackLimit"] = 1000;
+ (*settings)["failIfExtra"] = false;
+ (*settings)["rejectDupKeys"] = false;
+//! [CharReaderBuilderDefaults]
+}
+
+//////////////////////////////////
+// global functions
+
+bool parseFromStream(
+ CharReader::Factory const& fact, std::istream& sin,
+ Value* root, std::string* errs)
+{
+ std::ostringstream ssin;
+ ssin << sin.rdbuf();
+ std::string doc = ssin.str();
+ char const* begin = doc.data();
+ char const* end = begin + doc.size();
+ // Note that we do not actually need a null-terminator.
+ CharReaderPtr const reader(fact.newCharReader());
+ return reader->parse(begin, end, root, errs);
+}
+
std::istream& operator>>(std::istream& sin, Value& root) {
- Json::Reader reader;
- bool ok = reader.parse(sin, root, true);
+ CharReaderBuilder b;
+ std::string errs;
+ bool ok = parseFromStream(b, sin, &root, &errs);
if (!ok) {
fprintf(stderr,
"Error from reader: %s",
- reader.getFormattedErrorMessages().c_str());
+ errs.c_str());
- JSON_FAIL_MESSAGE("reader error");
+ throwRuntimeError("reader error");
}
return sin;
}