Reranko05 commented on code in PR #51038:
URL: https://github.com/apache/arrow/pull/51038#discussion_r4033321029
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cpp/src/arrow/json/parser.cc:
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@@ -762,43 +739,196 @@ class HandlerBase : public BlockParser,
}
protected:
- template <typename Handler, typename Stream>
- Status DoParse(Handler& handler, Stream&& json, size_t json_size) {
- constexpr auto parse_flags = rj::kParseIterativeFlag |
rj::kParseNanAndInfFlag |
- rj::kParseStopWhenDoneFlag |
- rj::kParseNumbersAsStringsFlag;
-
- rj::Reader reader;
- // ensure that the loop can exit when the block too large.
- for (; num_rows_ < std::numeric_limits<int32_t>::max(); ++num_rows_) {
- auto ok = reader.Parse<parse_flags>(json, handler);
- switch (ok.Code()) {
- case rj::kParseErrorNone:
- // parse the next object
- continue;
- case rj::kParseErrorDocumentEmpty:
- if (json.Tell() < json_size) {
- return ParseError(rj::GetParseError_En(ok.Code()));
- }
- // parsed all objects, finish
- return Status::OK();
- case rj::kParseErrorTermination:
- // handler emitted an error
- return handler.Error();
- default:
- // rj emitted an error
- return ParseError(rj::GetParseError_En(ok.Code()), " in row ",
num_rows_);
+ template <typename Handler>
+ Status DoParse(Handler& handler, const std::shared_ptr<Buffer>& json) {
+ RETURN_NOT_OK(ReserveScalarStorage(json->size()));
+
+ const std::string_view input(reinterpret_cast<const char*>(json->data()),
+ json->size());
+
+ if (IsWhitespaceOnly(input)) {
+ return Status::OK();
+ }
+
+ auto parse = [&](const auto& input) -> Status {
+ simdjson::ondemand::parser parser;
Review Comment:
I just added the local parser to check if that fixes the emscripten error
somehow. I will revert that.
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