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[core] Store feature keys in same order as in vector tile

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The keys in the vector tile may not be in alphabetical order. Building a vector of keys by looping over std::map<std::string, …> effectively sorts the keys by alphabetical order without sorting the associated values. This change inserts keys in the same order in which they appear in the vector tile.
This commit is contained in:
Minh Nguyễn
2016-05-31 09:03:02 -07:00
committed by Minh Nguyễn
parent f7ce5b3a7b
commit fcacbb87ef
2 changed files with 5 additions and 6 deletions
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2
package.json
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@@ -20,7 +20,7 @@
"aws-sdk": "^2.3.5",
"express": "^4.11.1",
"mapbox-gl-shaders": "mapbox/mapbox-gl-shaders#36278b864e60e1dba937a6863064c03d69526854",
"mapbox-gl-test-suite": "mapbox/mapbox-gl-test-suite#b3441d9a285ffbe9b876677acb13d7df07e5b975",
"mapbox-gl-test-suite": "mapbox/mapbox-gl-test-suite#f45fd7aba98650c7f3bf778c9cbbfd3b548a4ee8",
"node-gyp": "^3.3.1",
"request": "^2.72.0",
"tape": "^4.5.1"

9
src/mbgl/tile/vector_tile.cpp
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@@ -191,7 +191,10 @@ VectorTileLayer::VectorTileLayer(protozero::pbf_reader layer_pbf) {
features.push_back(layer_pbf.get_message());
break;
case 3: // keys
keysMap.emplace(layer_pbf.get_string(), keysMap.size());
{
auto iter = keysMap.emplace(layer_pbf.get_string(), keysMap.size());
keys.emplace_back(std::reference_wrapper<const std::string>(iter.first->first));
}
break;
case 4: // values
values.emplace_back(parseValue(layer_pbf.get_message()));
@@ -207,10 +210,6 @@ VectorTileLayer::VectorTileLayer(protozero::pbf_reader layer_pbf) {
break;
}
}
for (auto &pair : keysMap) {
keys.emplace_back(std::reference_wrapper<const std::string>(pair.first));
}
}
util::ptr<const GeometryTileFeature> VectorTileLayer::getFeature(std::size_t i) const {