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Add public semantic error reporting

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Closes open-source-parsers/jsoncpp#57
This commit is contained in:
Mara Kim 2014-10-23 02:03:43 -05:00
parent 7bd75b0fb4
commit b84a39cae5
2 changed files with 60 additions and 0 deletions
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23
include/json/reader.h
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@ -130,6 +130,29 @@ public:
*/
std::vector<StructuredError> getStructuredErrors() const;
/** \brief Add a semantic error message.
* \param value JSON Value location associated with the error
* \param message The error message.
* \return \c true if the error was successfully added, \c false if the
* Value offset exceeds the document size.
*/
bool pushError(const Value& value, const std::string& message);
/** \brief Add a semantic error message with extra context.
* \param value JSON Value location associated with the error
* \param message The error message.
* \param extra Additional JSON Value location to contextualize the error
* \return \c true if the error was successfully added, \c false if either
* Value offset exceeds the document size.
*/
bool pushError(const Value& value, const std::string& message, const Value& extra);
/** \brief Return whether there are any errors.
* \return \c true if there are no errors to report \c false if
* errors have occurred.
*/
bool good() const;
private:
enum TokenType {
tokenEndOfStream = 0,

37
src/lib_json/json_reader.cpp
View File

@ -830,6 +830,43 @@ std::vector<Reader::StructuredError> Reader::getStructuredErrors() const {
return allErrors;
}
bool Reader::pushError(const Value& value, const std::string& message) {
if(value.getOffsetStart() > end_ - begin_
|| value.getOffsetLimit() > end_ - begin_)
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) {
if(value.getOffsetStart() > end_ - begin_
|| value.getOffsetLimit() > end_ - begin_
|| extra.getOffsetLimit() > end_ - begin_)
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();
}
std::istream& operator>>(std::istream& sin, Value& root) {
Json::Reader reader;
bool ok = reader.parse(sin, root, true);