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Merge pull request #172 from cdunn2001/master

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Fix bug in ValueIteratorBase::operator- 

Fixes #169.
This commit is contained in:
Christopher Dunn 2015-02-15 02:44:17 -06:00
commit 400b744195
3 changed files with 21 additions and 2 deletions
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2
include/json/value.h
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@ -946,7 +946,7 @@ public:
bool operator!=(const SelfType& other) const { return !isEqual(other); }
difference_type operator-(const SelfType& other) const {
return computeDistance(other);
return other.computeDistance(*this);
}
/// Return either the index or the member name of the referenced value as a

2
src/lib_json/json_valueiterator.inl
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@ -77,7 +77,7 @@ ValueIteratorBase::difference_type
ValueIteratorBase::computeDistance(const SelfType& other) const {
#ifndef JSON_VALUE_USE_INTERNAL_MAP
#ifdef JSON_USE_CPPTL_SMALLMAP
return current_ - other.current_;
return other.current_ - current_;
#else
// Iterator for null value are initialized using the default
// constructor, which initialize current_ to the default

19
src/test_lib_json/main.cpp
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@ -1861,6 +1861,23 @@ JSONTEST_FIXTURE(CharReaderFailIfExtraTest, commentAfterBool) {
JSONTEST_ASSERT_EQUAL(true, root.asBool());
delete reader;
}
struct IteratorTest : JsonTest::TestCase {};
JSONTEST_FIXTURE(IteratorTest, distance) {
Json::Value json;
json["k1"] = "a";
json["k2"] = "b";
int dist;
std::string str;
for (Json::ValueIterator it = json.begin(); it != json.end(); ++it) {
dist = it - json.begin();
str = it->asString().c_str();
}
JSONTEST_ASSERT_EQUAL(1, dist);
JSONTEST_ASSERT_STRING_EQUAL("b", str);
}
int main(int argc, const char* argv[]) {
JsonTest::Runner runner;
JSONTEST_REGISTER_FIXTURE(runner, ValueTest, checkNormalizeFloatingPointStr);
@ -1905,6 +1922,8 @@ int main(int argc, const char* argv[]) {
JSONTEST_REGISTER_FIXTURE(runner, CharReaderFailIfExtraTest, commentAfterArray);
JSONTEST_REGISTER_FIXTURE(runner, CharReaderFailIfExtraTest, commentAfterBool);
JSONTEST_REGISTER_FIXTURE(runner, IteratorTest, distance);
JSONTEST_REGISTER_FIXTURE(runner, WriterTest, dropNullPlaceholders);
JSONTEST_REGISTER_FIXTURE(runner, StreamWriterTest, dropNullPlaceholders);