syntax = "proto3";

package camino;

import "google/protobuf/descriptor.proto";
import "camino/schema.proto";
import "quixos/refs.proto";

extend google.protobuf.FileOptions {
  string schema_namespace = 51000;
  string schema_version = 51001;
}

extend google.protobuf.MessageOptions {
  ClassOptions class = 51010;
  repeated MethodOptions method = 51011;
  repeated MigrationOptions migration = 51012;
}

extend google.protobuf.FieldOptions {
  ConflictStrategy conflict = 51020;
  EdgeOptions edge = 51021;
  FieldStorage field_storage = 51022;
  FieldOps field_ops = 51023;
}

extend google.protobuf.MethodOptions {
  quixos.FunctionRef impl = 51030;
}

message ClassOptions {
  uint32 version = 1;
  SymbolRef id = 2;
}

message EdgeOptions {
  SymbolRef id = 1;
  SymbolRef target = 2;
  Cardinality cardinality = 3;
  string inverse = 4;
}

message MethodOptions {
  string name = 1;
  quixos.FunctionRef function = 2;
}

message MigrationOptions {
  uint32 from_version = 1;
  uint32 to_version = 2;
  quixos.FunctionRef function = 3;
}