/*
|
* Copyright (C) 2018 The Android Open Source Project
|
*
|
* Licensed 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.
|
*/
|
|
#ifndef LIBTEXTCLASSIFIER_ACTIONS_LUA_UTILS_H_
|
#define LIBTEXTCLASSIFIER_ACTIONS_LUA_UTILS_H_
|
|
#include "actions/types.h"
|
#include "annotator/types.h"
|
#include "utils/flatbuffers.h"
|
#include "utils/lua-utils.h"
|
|
#ifdef __cplusplus
|
extern "C" {
|
#endif
|
#include "lauxlib.h"
|
#include "lua.h"
|
#include "lualib.h"
|
#ifdef __cplusplus
|
}
|
#endif
|
|
// Action specific shared lua utilities.
|
namespace libtextclassifier3 {
|
|
// Provides an annotation to lua.
|
void PushAnnotation(const ClassificationResult& classification,
|
const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env);
|
void PushAnnotation(const ClassificationResult& classification,
|
StringPiece text,
|
const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env);
|
void PushAnnotation(const ActionSuggestionAnnotation& annotation,
|
const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env);
|
|
// A lua iterator to enumerate annotation.
|
template <typename Annotation>
|
class AnnotationIterator
|
: public LuaEnvironment::ItemIterator<std::vector<Annotation>> {
|
public:
|
AnnotationIterator(const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env)
|
: env_(env), entity_data_schema_(entity_data_schema) {}
|
int Item(const std::vector<Annotation>* annotations, const int64 pos,
|
lua_State* state) const override {
|
PushAnnotation((*annotations)[pos], entity_data_schema_, env_);
|
return 1;
|
}
|
int Item(const std::vector<Annotation>* annotations, StringPiece key,
|
lua_State* state) const override;
|
|
private:
|
LuaEnvironment* env_;
|
const reflection::Schema* entity_data_schema_;
|
};
|
|
template <>
|
int AnnotationIterator<ClassificationResult>::Item(
|
const std::vector<ClassificationResult>* annotations, StringPiece key,
|
lua_State* state) const;
|
|
template <>
|
int AnnotationIterator<ActionSuggestionAnnotation>::Item(
|
const std::vector<ActionSuggestionAnnotation>* annotations, StringPiece key,
|
lua_State* state) const;
|
|
void PushAnnotatedSpan(
|
const AnnotatedSpan& annotated_span,
|
const AnnotationIterator<ClassificationResult>& annotation_iterator,
|
LuaEnvironment* env);
|
|
MessageTextSpan ReadSpan(LuaEnvironment* env);
|
ActionSuggestionAnnotation ReadAnnotation(
|
const reflection::Schema* entity_data_schema, LuaEnvironment* env);
|
int ReadAnnotations(const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env,
|
std::vector<ActionSuggestionAnnotation>* annotations);
|
ClassificationResult ReadClassificationResult(
|
const reflection::Schema* entity_data_schema, LuaEnvironment* env);
|
|
// A lua iterator to enumerate annotated spans.
|
class AnnotatedSpanIterator
|
: public LuaEnvironment::ItemIterator<std::vector<AnnotatedSpan>> {
|
public:
|
AnnotatedSpanIterator(
|
const AnnotationIterator<ClassificationResult>& annotation_iterator,
|
LuaEnvironment* env)
|
: env_(env), annotation_iterator_(annotation_iterator) {}
|
AnnotatedSpanIterator(const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env)
|
: env_(env), annotation_iterator_(entity_data_schema, env) {}
|
|
int Item(const std::vector<AnnotatedSpan>* spans, const int64 pos,
|
lua_State* state) const override {
|
PushAnnotatedSpan((*spans)[pos], annotation_iterator_, env_);
|
return /*num results=*/1;
|
}
|
|
private:
|
LuaEnvironment* env_;
|
AnnotationIterator<ClassificationResult> annotation_iterator_;
|
};
|
|
// Provides an action to lua.
|
void PushAction(
|
const ActionSuggestion& action,
|
const reflection::Schema* entity_data_schema,
|
const AnnotationIterator<ActionSuggestionAnnotation>& annotation_iterator,
|
LuaEnvironment* env);
|
|
ActionSuggestion ReadAction(
|
const reflection::Schema* actions_entity_data_schema,
|
const reflection::Schema* annotations_entity_data_schema,
|
LuaEnvironment* env);
|
int ReadActions(const reflection::Schema* actions_entity_data_schema,
|
const reflection::Schema* annotations_entity_data_schema,
|
LuaEnvironment* env, std::vector<ActionSuggestion>* actions);
|
|
// A lua iterator to enumerate actions suggestions.
|
class ActionsIterator
|
: public LuaEnvironment::ItemIterator<std::vector<ActionSuggestion>> {
|
public:
|
ActionsIterator(const reflection::Schema* entity_data_schema,
|
const reflection::Schema* annotations_entity_data_schema,
|
LuaEnvironment* env)
|
: env_(env),
|
entity_data_schema_(entity_data_schema),
|
annotation_iterator_(annotations_entity_data_schema, env) {}
|
int Item(const std::vector<ActionSuggestion>* actions, const int64 pos,
|
lua_State* state) const override {
|
PushAction((*actions)[pos], entity_data_schema_, annotation_iterator_,
|
env_);
|
return /*num results=*/1;
|
}
|
|
private:
|
LuaEnvironment* env_;
|
const reflection::Schema* entity_data_schema_;
|
AnnotationIterator<ActionSuggestionAnnotation> annotation_iterator_;
|
};
|
|
// Conversation message lua iterator.
|
class ConversationIterator
|
: public LuaEnvironment::ItemIterator<std::vector<ConversationMessage>> {
|
public:
|
ConversationIterator(
|
const AnnotationIterator<ClassificationResult>& annotation_iterator,
|
LuaEnvironment* env)
|
: env_(env),
|
annotated_span_iterator_(
|
AnnotatedSpanIterator(annotation_iterator, env)) {}
|
ConversationIterator(const reflection::Schema* entity_data_schema,
|
LuaEnvironment* env)
|
: env_(env),
|
annotated_span_iterator_(
|
AnnotatedSpanIterator(entity_data_schema, env)) {}
|
|
int Item(const std::vector<ConversationMessage>* messages, const int64 pos,
|
lua_State* state) const override;
|
|
private:
|
LuaEnvironment* env_;
|
AnnotatedSpanIterator annotated_span_iterator_;
|
};
|
|
} // namespace libtextclassifier3
|
|
#endif // LIBTEXTCLASSIFIER_ACTIONS_LUA_UTILS_H_
|
