[REFACTOR] IRPrinter->NodePrinter, move to node/printer.h

Rationale: printer is a common infra that is shared across all nodes.

include/tvm/expr.h

@@ -470,37 +470,6 @@ inline std::unordered_map<K, V> as_unordered_map(const Map<K, V>& dmap) {
   }
   return ret;
 }
-
-// Printer infra.
-/*! \brief A Pretty printer class to print the IR. */
-class IRPrinter {
- public:
-  /*! \brief The output stream */
-  std::ostream& stream;
-  /*! \brief The indentation level. */
-  int indent{0};
-  explicit IRPrinter(std::ostream& stream)  // NOLINT(*)
-      : stream(stream) {}
-
-  /*! \brief The node to be printed. */
-  TVM_DLL void Print(const ObjectRef& node);
-  /*! \brief Print indent to the stream */
-  TVM_DLL void PrintIndent();
-  // Allow registration to be printer.
-  using FType = NodeFunctor<void(const ObjectRef&, IRPrinter *)>;
-  TVM_DLL static FType& vtable();
-};
-}  // namespace tvm
-
-namespace tvm {
-namespace runtime {
-// default print function for all objects
-// provide in the runtime namespace as this is where objectref originally comes from.
-inline std::ostream& operator<<(std::ostream& os, const ObjectRef& n) {  // NOLINT(*)
-  IRPrinter(os).Print(n);
-  return os;
-}
-}  // namespace runtime
 }  // namespace tvm
 
 namespace std {

include/tvm/node/functor.h

@@ -24,14 +24,16 @@
 #define TVM_NODE_FUNCTOR_H_
 
 #include <dmlc/logging.h>
-#include <tvm/runtime/registry.h>
-#include <tvm/node/node.h>
+#include <tvm/runtime/object.h>
 
 #include <vector>
 #include <type_traits>
 #include <utility>
 
 namespace tvm {
+
+using runtime::ObjectRef;
+
 /*!
  * \brief A dynamically dispatched functor on the type of the first argument.
  *
@@ -137,11 +139,11 @@ class NodeFunctor<R(const ObjectRef& n, Args...)> {
  * \brief Useful macro to set NodeFunctor dispatch in a global static field.
  *
  * \code
- *  // Use NodeFunctor to implement IRPrinter similar to Visitor Pattern.
+ *  // Use NodeFunctor to implement NodePrinter similar to Visitor Pattern.
  *  // vtable allows easy patch of new Node types, without changing
- *  // interface of IRPrinter.
+ *  // interface of NodePrinter.
  *
- *  class IRPrinter {
+ *  class NodePrinter {
  *   public:
  *    std::ostream& stream;
  *    // the dispatch function.
@@ -150,18 +152,18 @@ class NodeFunctor<R(const ObjectRef& n, Args...)> {
  *      f(e, this);
  *    }
  *
- *    using FType = NodeFunctor<void (const ObjectRef&, IRPrinter *)>;
+ *    using FType = NodeFunctor<void (const ObjectRef&, NodePrinter* )>;
  *    // function to return global function table
  *    static FType& vtable();
  *  };
  *
  *  // in cpp/cc file
- *  IRPrinter::FType& IRPrinter::vtable() { // NOLINT(*)
+ *  NodePrinter::FType& NodePrinter::vtable() { // NOLINT(*)
  *    static FType inst; return inst;
  *  }
  *
- *  TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
- *  .set_dispatch<Add>([](const ObjectRef& ref, IRPrinter* p) {
+ *  TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+ *  .set_dispatch<Add>([](const ObjectRef& ref, NodePrinter* p) {
  *    auto* n = static_cast<const Add*>(ref.get());
  *    p->print(n->a);
  *    p->stream << '+'

include/tvm/node/node.h

@@ -38,6 +38,7 @@
 #include <tvm/runtime/object.h>
 #include <tvm/runtime/memory.h>
 #include <tvm/node/reflection.h>
+#include <tvm/node/printer.h>
 
 #include <string>
 #include <vector>

include/tvm/node/printer.h

@@ -0,0 +1,61 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*!
+ * \file tvm/node/printer.h
+ * \brief Printer class to print repr string of each AST/IR nodes.
+ */
+#ifndef TVM_NODE_PRINTER_H_
+#define TVM_NODE_PRINTER_H_
+
+#include <tvm/node/functor.h>
+#include <iostream>
+
+namespace tvm {
+/*! \brief A printer class to print the AST/IR nodes. */
+class NodePrinter {
+ public:
+  /*! \brief The output stream */
+  std::ostream& stream;
+  /*! \brief The indentation level. */
+  int indent{0};
+
+  explicit NodePrinter(std::ostream& stream)  // NOLINT(*)
+      : stream(stream) {}
+
+  /*! \brief The node to be printed. */
+  TVM_DLL void Print(const ObjectRef& node);
+  /*! \brief Print indent to the stream */
+  TVM_DLL void PrintIndent();
+  // Allow registration to be printer.
+  using FType = NodeFunctor<void(const ObjectRef&, NodePrinter*)>;
+  TVM_DLL static FType& vtable();
+};
+}  // namespace tvm
+
+namespace tvm {
+namespace runtime {
+// default print function for all objects
+// provide in the runtime namespace as this is where objectref originally comes from.
+inline std::ostream& operator<<(std::ostream& os, const ObjectRef& n) {  // NOLINT(*)
+  NodePrinter(os).Print(n);
+  return os;
+}
+}  // namespace runtime
+}  // namespace tvm
+#endif  // TVM_NODE_PRINTER_H_

src/arithmetic/const_int_bound.cc

@@ -51,8 +51,8 @@ inline void PrintBoundValue(std::ostream& os, int64_t val) {
   }
 }
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<ConstIntBoundNode>([](const ObjectRef& node, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<ConstIntBoundNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const ConstIntBoundNode*>(node.get());
     p->stream << "ConstIntBound[";
     PrintBoundValue(p->stream, op->min_value);

src/arithmetic/int_set.cc

@@ -811,8 +811,8 @@ IntSet EvalSet(Range r,
 
 TVM_REGISTER_NODE_TYPE(IntervalSetNode);
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<IntervalSetNode>([](const ObjectRef& node, IRPrinter *p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<IntervalSetNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const IntervalSetNode*>(node.get());
     p->stream << "IntervalSet"
               << "[" << op->min_value << ", "

src/arithmetic/modular_set.cc

@@ -44,8 +44,8 @@ ModularSet::ModularSet(int64_t coeff, int64_t base) {
   data_ = std::move(node);
 }
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<ModularSetNode>([](const ObjectRef& node, IRPrinter *p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<ModularSetNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const ModularSetNode*>(node.get());
     p->stream << "ModularSet("
               << "coeff=" << op->coeff << ", base="

src/codegen/build_module.cc

@@ -41,8 +41,8 @@ using runtime::PackedFunc;
 TVM_REGISTER_NODE_TYPE(TargetNode);
 TVM_REGISTER_NODE_TYPE(GenericFuncNode);
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<TargetNode>([](const ObjectRef& node, IRPrinter *p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<TargetNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const TargetNode*>(node.get());
     p->stream << op->str();
   });
@@ -665,8 +665,8 @@ tvm::BuildConfig BuildConfig::Current() {
 
 TVM_REGISTER_NODE_TYPE(BuildConfigNode);
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<BuildConfigNode>([](const ObjectRef& node, IRPrinter *p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<BuildConfigNode>([](const ObjectRef& node, NodePrinter* p) {
   auto* op = static_cast<const BuildConfigNode*>(node.get());
   p->stream << "build_config(";
   p->stream << "data_alignment=" << op->data_alignment << ", ";

src/ir/span.cc

@@ -21,6 +21,7 @@
  * \brief The span data structure.
  */
 #include <tvm/ir/span.h>
+#include <tvm/runtime/registry.h>
 #include <tvm/packed_func_ext.h>
 
 namespace tvm {
@@ -48,8 +49,8 @@ SourceName SourceName::Get(const std::string& name) {
 TVM_REGISTER_GLOBAL("relay._make.SourceName")
 .set_body_typed(SourceName::Get);
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<SourceNameNode>([](const ObjectRef& ref, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<SourceNameNode>([](const ObjectRef& ref, NodePrinter* p) {
     auto* node = static_cast<const SourceNameNode*>(ref.get());
     p->stream << "SourceName(" << node->name << ", " << node << ")";
   });
@@ -73,8 +74,8 @@ TVM_REGISTER_NODE_TYPE(SpanNode);
 TVM_REGISTER_GLOBAL("relay._make.Span")
 .set_body_typed(SpanNode::make);
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<SpanNode>([](const ObjectRef& ref, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<SpanNode>([](const ObjectRef& ref, NodePrinter* p) {
     auto* node = static_cast<const SpanNode*>(ref.get());
     p->stream << "Span(" << node->source << ", " << node->lineno << ", "
               << node->col_offset << ")";

src/ir/type.cc

@@ -22,6 +22,7 @@
  * \brief Common type system AST nodes throughout the IR.
  */
 #include <tvm/ir/type.h>
+#include <tvm/runtime/registry.h>
 #include <tvm/packed_func_ext.h>
 
 namespace tvm {
@@ -40,8 +41,8 @@ TVM_REGISTER_GLOBAL("relay._make.TypeVar")
   return TypeVarNode::make(name, static_cast<TypeKind>(kind));
 });
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<TypeVarNode>([](const ObjectRef& ref, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<TypeVarNode>([](const ObjectRef& ref, NodePrinter* p) {
     auto* node = static_cast<const TypeVarNode*>(ref.get());
     p->stream << "TypeVar(" << node->name_hint << ", "
               << node->kind << ")";
@@ -61,8 +62,8 @@ TVM_REGISTER_GLOBAL("relay._make.GlobalTypeVar")
   return GlobalTypeVarNode::make(name, static_cast<TypeKind>(kind));
 });
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<GlobalTypeVarNode>([](const ObjectRef& ref, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<GlobalTypeVarNode>([](const ObjectRef& ref, NodePrinter* p) {
     auto* node = static_cast<const GlobalTypeVarNode*>(ref.get());
     p->stream << "GlobalTypeVar(" << node->name_hint << ", "
               << node->kind << ")";
@@ -85,8 +86,8 @@ TVM_REGISTER_NODE_TYPE(FuncTypeNode);
 TVM_REGISTER_GLOBAL("relay._make.FuncType")
 .set_body_typed(FuncTypeNode::make);
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<FuncTypeNode>([](const ObjectRef& ref, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<FuncTypeNode>([](const ObjectRef& ref, NodePrinter* p) {
   auto* node = static_cast<const FuncTypeNode*>(ref.get());
   p->stream << "FuncType(" << node->type_params << ", "
             << node->arg_types << ", " << node->ret_type << ", "

src/lang/attrs.cc

@@ -61,8 +61,8 @@ Attrs DictAttrsNode::make(Map<std::string, ObjectRef> dict) {
   return Attrs(n);
 }
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<DictAttrsNode>([](const ObjectRef& node, IRPrinter *p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<DictAttrsNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const DictAttrsNode*>(node.get());
     p->stream << op->dict;
 });

src/lang/buffer.cc

@@ -450,8 +450,8 @@ Buffer BufferNode::make(Var data,
   return Buffer(n);
 }
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<BufferNode>([](const ObjectRef& node, IRPrinter *p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<BufferNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const BufferNode*>(node.get());
     p->stream << "buffer(" << op->name << ", " << op << ")";
 });

src/lang/data_layout.cc

@@ -194,8 +194,8 @@ int32_t Layout::FactorOf(const LayoutAxis& axis) const {
   return -1;
 }
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<LayoutNode>([](const ObjectRef& node, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<LayoutNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* l = static_cast<const LayoutNode*>(node.get());
     p->stream << "Layout(" << l->name << ")";
   });
@@ -361,8 +361,8 @@ BijectiveLayout BijectiveLayoutNode::make(const Layout& src_layout,
   return BijectiveLayout(n);
 }
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<BijectiveLayoutNode>([](const ObjectRef& node, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<BijectiveLayoutNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* b = static_cast<const BijectiveLayoutNode*>(node.get());
     p->stream << "BijectiveLayout(" << b->src_layout.name()
               << "->" << b->dst_layout.name() << ")";

src/lang/expr.cc

@@ -97,33 +97,8 @@ Var var(std::string name_hint, DataType t) {
   return Var(name_hint, t);
 }
 
-void IRPrinter::Print(const ObjectRef& ir) {
-  static const FType& f = vtable();
-  if (!ir.defined()) {
-    stream << "(nullptr)";
-  } else {
-    if (f.can_dispatch(ir)) {
-      f(ir, this);
-    } else {
-      // default value, output type key and addr.
-      stream << ir->GetTypeKey() << "(" << ir.get() << ")";
-    }
-  }
-}
-
-void IRPrinter::PrintIndent() {
-  for (int i = 0; i < indent; ++i) {
-    stream << ' ';
-  }
-}
-
-IRPrinter::FType& IRPrinter::vtable() {
-  static FType inst;
-  return inst;
-}
-
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<IntImm>([](const ObjectRef& node, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<IntImm>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const IntImm*>(node.get());
     if (op->dtype == DataType::Int(32)) {
       p->stream << op->value;
@@ -132,8 +107,8 @@ TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
     }
   });
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<IterVarNode>([](const ObjectRef& node, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<IterVarNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const IterVarNode*>(node.get());
     p->stream << "iter_var(";
     if (op->var->name_hint.length() != 0) {
@@ -148,8 +123,8 @@ TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
     p->stream << ")";
   });
 
-TVM_STATIC_IR_FUNCTOR(IRPrinter, vtable)
-.set_dispatch<RangeNode>([](const ObjectRef& node, IRPrinter* p) {
+TVM_STATIC_IR_FUNCTOR(NodePrinter, vtable)
+.set_dispatch<RangeNode>([](const ObjectRef& node, NodePrinter* p) {
     auto* op = static_cast<const RangeNode*>(node.get());
     p->stream << "range(min=" << op->min << ", ext=" << op->extent << ')';
   });