kfeng123 commented on code in PR #15350:
URL: https://github.com/apache/tvm/pull/15350#discussion_r1270501418
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include/tvm/relay/dataflow_pattern.h:
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@@ -537,6 +539,41 @@ DFPattern IsTuple(const Array<DFPattern>& fields);
/*! \brief Syntatic Sugar for creating a TupleGetItemPattern*/
DFPattern IsTupleGetItem(const DFPattern tuple, int index = -1);
+/*! \brief A printer class to print pattern. */
+class DFPatternPrinter : public ReprPrinter {
+ public:
+ std::stringstream string_stream{};
+
+ std::unordered_map<DFPattern, std::pair<size_t, std::string>, ObjectPtrHash,
ObjectPtrEqual>
+ memo_{};
+ std::vector<DFPattern> recursed_patterns{};
+
+ DFPatternPrinter(std::ostream& stream) // NOLINT(*)
+ : ReprPrinter(stream) {}
+ TVM_DLL void Print(const ObjectRef& node);
+ using FType = NodeFunctor<void(const ObjectRef&, DFPatternPrinter*)>;
+ TVM_DLL static FType& vtable();
+};
+
+inline std::ostream& operator<<(std::ostream& os,
+ const DFPattern& n) { // NOLINT(*)
+ std::stringstream string_stream{}, tmp_stream{};
+ DFPatternPrinter printer{tmp_stream};
+ printer.Print(n);
+ string_stream << "Main pattern is:" << std::endl;
+ string_stream << printer.string_stream.str();
+ string_stream << std::endl;
+ string_stream << "Auxiliary patterns are:";
Review Comment:
Done
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