add fake interfaces to make compilable

paddle/framework/net.cc

@@ -5,7 +5,7 @@ namespace framework {
 
 PlainNet::PlainNet(const NetDesc& def) {}
 
-virtual Error PlainNet::InferShape() {
+Error PlainNet::InferShape(Scope* scope) {
   for (auto& op : ops_) {
     // wrong shape
     auto err = op.InferShape();
@@ -15,9 +15,11 @@ virtual Error PlainNet::InferShape() {
   return Error();
 }
 
-virtual Error PlainNet::Run(Scope* scope = nullptr,
-                            OpContext* context = nullptr, OpIndex begin = -1,
-                            OpIndex end = -1) const {}
+Error PlainNet::Run(Scope* scope, OpContext* context, OpIndex begin,
+                    OpIndex end) const {
+  // TODO Add implementation here.
+  return Error();
+}
 
 }  // namespace framework
 }  // namespace paddle

paddle/framework/net.h

@@ -17,6 +17,7 @@
 #include "paddle/framework/net_proto.pb.h"
 #include "paddle/framework/op_proto.pb.h"
 #include "paddle/framework/scope.h"
+#include "paddle/utils/Error.h"
 
 namespace paddle {
 namespace framework {
@@ -29,11 +30,16 @@ typedef int OpIndex;
  * keep updating if the concepts related are implemented.
  */
 
+struct OpDesc;
+struct OpDef;
+struct OpContext;
+struct OpAttrs {};
+
 class Operator {
  public:
   Operator(const OpDesc &def) {}
-  bool InferShape() {}
-  bool Run() {}
+  Error InferShape() { return Error(); }
+  Error Run() { return Error(); }
 };
 
 /**
@@ -55,7 +61,7 @@ class Net {
   /**
    * @brief Infer shapes of all inputs and outputs of operators.
    */
-  virtual bool InferShape(Scope *scope) override;
+  virtual Error InferShape(Scope *scope) = 0;
   /**
    * @brief Run the network.
    *
@@ -64,28 +70,30 @@ class Net {
    * environment for ops. `begin` and `end` specify the scope of `ops_` to run,
    * If no positive indexes are provided, all operators in `ops_` will run.
    */
-  virtual bool Run(Scope *scope, OpContext *context, OpIndex begin = -1,
+  virtual Error Run(Scope *scope, OpContext *context, OpIndex begin = -1,
                     OpIndex end = -1) const = 0;
 
   /**
    * @brief Add an Operator according to `def`.
    */
-  virtual OpIndex AddOp(const proto::OpDef &def) = 0;
+  virtual OpIndex AddOp(const OpDef &def) = 0;
 
   /**
    * @brief Add optimizer operators acctording to `attrs`.
    */
-  virtual bool AddOptimizerOps(const OptAttrs &attrs) = 0;
+  virtual Error AddOptimizerOps(const OpAttrs &attrs) = 0;
 
   /**
    * @brief Add backward operators.
    */
-  virtual bool AddBackwardOps() = 0;
+  virtual Error AddBackwardOps() = 0;
 
   /**
    * @brief Create a network.
    */
   static std::unique_ptr<Net> Create(const NetDesc &def = NetDesc());
+
+  virtual ~Net() = 0;
 };
 
 /**
@@ -108,7 +116,7 @@ class PlainNet : public Net {
    * Infer all the operators' input and output varialbes' shapes, will be called
    * before every mini-batch
    */
-  virtual bool InferShape(Scope *scope) override;
+  virtual Error InferShape(Scope *scope) override;
 
   /**
    * @brief Run the network.
@@ -117,23 +125,23 @@ class PlainNet : public Net {
    * scope will be used instead. If no OpContext is provicded, default context
    * will be used.
    */
-  virtual bool Run(Scope *scope = nullptr, OpContext *context = nullptr,
+  virtual Error Run(Scope *scope = nullptr, OpContext *context = nullptr,
                     OpIndex begin = -1, OpIndex end = -1) const override;
 
   /**
    * @brief Add an operator to this network.
    */
-  virtual OpIndex AddOp(const proto::OpDef &def) override;
+  virtual OpIndex AddOp(const OpDef &def) override;
 
   /**
    * @brief Add all optimizer operators related into the network.
    */
-  virtual bool AddOptimizerOps(const OptAttrs &attrs) override;
+  virtual Error AddOptimizerOps(const OpAttrs &attrs) override;
 
   /**
    * @brief Add all backward operators related into the network.
    */
-  virtual bool AddBackwardOps() override;
+  virtual Error AddBackwardOps() override;
 
  protected:
   /**
@@ -141,7 +149,7 @@ class PlainNet : public Net {
    *
    * Create operators accordding to `def`, will be called by the constructor.
    */
-  bool BuildNet(const NetDesc &def);
+  Error BuildNet(const NetDesc &def);
 
   /**
    * @brief Add an operator into this network.
@@ -151,9 +159,9 @@ class PlainNet : public Net {
    * `outputs` are keys of mutable output variables. An `OpIndex` will be
    * returned to indicate the offset of the new operator in `ops_`.
    */
-  OpIndex AddOp(const std::string &type, const std::vector<string> &inputs,
-                const std::vector<string> &outputs,
-                const OprAttr &attrs = OprAttr());
+  OpIndex AddOp(const std::string &type, const std::vector<std::string> &inputs,
+                const std::vector<std::string> &outputs,
+                const OpAttrs &attrs = OpAttrs());
 
  private:
   // the operators owned by `Network`.

paddle/framework/net_proto.proto

 syntax="proto2";
 package paddle.framework;
 
-import "op_proto.proto"
+import "op_proto.proto";
 
 message NetDesc {
   // network identification
@@ -13,4 +13,3 @@ message NetDesc {
   // num worker always
   optional int32 num_workers = 4;
 }
-