syntax = "proto3";

package tensorflow;
option cc_enable_arenas = true;
option java_outer_classname = "AttrValueProtos";
option java_multiple_files = true;
option java_package = "org.tensorflow.framework";

import "tensorflow/core/framework/tensor.proto";
import "tensorflow/core/framework/tensor_shape.proto";
import "tensorflow/core/framework/types.proto";

// Protocol buffer representing the value for an attr used to configure an Op.
// Comment indicates the corresponding attr type.  Only the field matching the
// attr type may be filled.
message AttrValue {
  // LINT.IfChange
  message ListValue {
    repeated bytes s = 2;                        // "list(string)"
    repeated int64 i = 3 [packed = true];        // "list(int)"
    repeated float f = 4 [packed = true];        // "list(float)"
    repeated bool b = 5 [packed = true];         // "list(bool)"
    repeated DataType type = 6 [packed = true];  // "list(type)"
    repeated TensorShapeProto shape = 7;         // "list(shape)"
    repeated TensorProto tensor = 8;             // "list(tensor)"
    // TODO(zhifengc/josh11b): implements list(func) if needed.
  }
  // LINT.ThenChange(https://www.tensorflow.org/code/tensorflow/c/c_api.cc)

  oneof value {
    bytes s = 2;                 // "string"
    int64 i = 3;                 // "int"
    float f = 4;                 // "float"
    bool b = 5;                  // "bool"
    DataType type = 6;           // "type"
    TensorShapeProto shape = 7;  // "shape"
    TensorProto tensor = 8;      // "tensor"
    ListValue list = 1;          // any "list(...)"

    // "func" represents a function. func.name is a function's name or
    // a primitive op's name. func.attr.first is the name of an attr
    // defined for that function. func.attr.second is the value for
    // that attr in the instantiation.
    NameAttrList func = 10;

    // This is a placeholder only used in nodes defined inside a
    // function.  It indicates the attr value will be supplied when
    // the function is instantiated.  For example, let us suppose a
    // node "N" in function "FN". "N" has an attr "A" with value
    // placeholder = "foo". When FN is instantiated with attr "foo"
    // set to "bar", the instantiated node N's attr A will have been
    // given the value "bar".
    string placeholder = 9;
  }
}

// A list of attr names and their values. The whole list is attached
// with a string name.  E.g., MatMul[T=float].
message NameAttrList {
  string name = 1;
  map<string, AttrValue> attr = 2;
}
