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reflective-rapidjson
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Add a function to format JSON deserialization errors

This commit is contained in:
Martchus 2020-02-29 22:35:02 +01:00
parent 86481fa459
commit 442359f5bf
2 changed files with 83 additions and 2 deletions
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7
lib/CMakeLists.txt
View File

@ -21,7 +21,8 @@ if (RapidJSON_FOUND)
json/reflector-boosthana.h
json/reflector-chronoutilities.h
json/serializable.h
json/errorhandling.h)
json/errorhandling.h
json/errorformatting.h)
list(APPEND TEST_SRC_FILES tests/jsonreflector.cpp tests/jsonreflector-boosthana.cpp
tests/jsonreflector-chronoutilities.cpp)
endif ()
@ -53,4 +54,6 @@ include(Doxygen)
include(ConfigHeader)
# export target name so the generator can link against it
set(${META_PROJECT_VARNAME_UPPER}_TARGET_NAME "${META_TARGET_NAME}" PARENT_SCOPE)
set(${META_PROJECT_VARNAME_UPPER}_TARGET_NAME
"${META_TARGET_NAME}"
PARENT_SCOPE)

78
lib/json/errorformatting.h Normal file
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@ -0,0 +1,78 @@
#ifndef REFLECTIVE_RAPIDJSON_JSON_ERROR_FORMATTING_H
#define REFLECTIVE_RAPIDJSON_JSON_ERROR_FORMATTING_H
/*!
* \file errorformatting.h
* \brief Contains helper functions to format errors when deserializing JSON files.
*/
#include "./errorhandling.h"
#include <c++utilities/conversion/stringbuilder.h>
#include <string_view>
namespace ReflectiveRapidJSON {
inline std::string_view jsonTypeToString(JsonType jsonType)
{
switch (jsonType) {
case ReflectiveRapidJSON::JsonType::Null:
return "null";
case ReflectiveRapidJSON::JsonType::Number:
return "number";
case ReflectiveRapidJSON::JsonType::Bool:
return "bool";
case ReflectiveRapidJSON::JsonType::String:
return "string";
case ReflectiveRapidJSON::JsonType::Array:
return "array";
case ReflectiveRapidJSON::JsonType::Object:
return "object";
default:
return "?";
}
}
inline std::string formatJsonDeserializationError(const JsonDeserializationError &error)
{
using namespace CppUtilities;
std::string_view errorKind;
std::string additionalInfo;
switch (error.kind) {
case JsonDeserializationErrorKind::TypeMismatch:
errorKind = "type mismatch";
additionalInfo = ": expected \"" % jsonTypeToString(error.expectedType) % "\", got \"" % jsonTypeToString(error.actualType) + '\"';
break;
case JsonDeserializationErrorKind::ArraySizeMismatch:
errorKind = "array size mismatch";
break;
case JsonDeserializationErrorKind::ConversionError:
errorKind = "conversion error";
break;
case JsonDeserializationErrorKind::UnexpectedDuplicate:
errorKind = "unexpected duplicate";
break;
case JsonDeserializationErrorKind::InvalidVariantObject:
errorKind = "invalid variant object";
break;
case JsonDeserializationErrorKind::InvalidVariantIndex:
errorKind = "invalid variant index";
break;
default:
errorKind = "semantic error";
}
if (error.record && error.member) {
return errorKind % " within record \"" % error.record % "\" and member \"" % error.member % '\"' + additionalInfo;
} else if (error.record && error.index != JsonDeserializationError::noIndex) {
return errorKind % " within record \"" % error.record % "\" and index \"" % error.index % '\"' + additionalInfo;
} else if (error.record) {
return errorKind % " within record \"" % error.record % '\"' + additionalInfo;
} else {
return errorKind % " in document" + additionalInfo;
}
}
} // namespace ReflectiveRapidJSON
#endif // REFLECTIVE_RAPIDJSON_JSON_ERROR_FORMATTING_H