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[JIT] Serialization methods for SourceRange and Source #22178

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[JIT] Serialization methods for SourceRange and Source #22178

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[JIT] Serialization methods for SourceRange and Source
Jun 25, 2019
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Update on "[JIT] Serialization methods for SourceRange and Source"
Jun 25, 2019
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Update on "[JIT] Serialization methods for SourceRange and Source"
Jun 25, 2019
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Update on "[JIT] Serialization methods for SourceRange and Source"
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Update on "[JIT] Serialization methods for SourceRange and Source"
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Update on "[JIT] Serialization methods for SourceRange and Source"
Jun 28, 2019
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Update on "[JIT] Serialization methods for SourceRange and Source"
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39 changes: 39 additions & 0 deletions torch/csrc/jit/source_range_serializer.h
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Original file line number Diff line number Diff line change
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#pragma once

#include <ATen/core/ivalue.h>
#include <torch/csrc/jit/source_range.h>

namespace torch {
namespace jit {

class SourceRangeSerializer {
public:
// Serialize SourceRange as Tuple[SourceType, int, int]
// where SourceType = Tuple[str, Optional[str], int, List[int]],
// the serialized form of Source
c10::IValue serialize(const SourceRange& sr) {
std::vector<c10::IValue> elements = {
serialize_source(sr.source()), (int64_t)sr.start(), (int64_t)sr.end()};
return c10::ivalue::Tuple::create(std::move(elements));
}

private:
// Serialize Source as Tuple[str, Optional[str], int, List[int]]
// This caches serialized sources, since many SourceRanges can
// refer to the same one.
c10::IValue serialize_source(const std::shared_ptr<Source>& s) {
if (serialized_sources.count(s)) {
return serialized_sources.at(s);
}
std::vector<c10::IValue> elements{
s->text(), s->filename(), (int64_t)s->starting_line_no()};
auto serialized = c10::ivalue::Tuple::create(std::move(elements));
serialized_sources[s] = serialized;
return serialized;
}

std::unordered_map<std::shared_ptr<Source>, c10::IValue> serialized_sources;
};

} // namespace jit
} // namespace torch