/*
 * Copyright (C) 2011 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 __API_GEN_H_
#define __API_GEN_H_

#include <string.h>

#include <vector>

#include "entry_point.h"

class ApiGen : private std::vector<EntryPoint> {
   public:
    typedef std::vector<std::string> StringVec;
    typedef enum { CLIENT_SIDE, SERVER_SIDE, WRAPPER_SIDE } SideType;

    ApiGen(const std::string& basename)
        : m_basename(basename), m_maxEntryPointsParams(0), m_baseOpcode(0) {}
    virtual ~ApiGen() {}
    int readSpec(const std::string& filename);
    int readAttributes(const std::string& attribFilename);
    size_t maxEntryPointsParams() { return m_maxEntryPointsParams; }
    void updateMaxEntryPointsParams(size_t val) {
        if (m_maxEntryPointsParams == 0 || val > m_maxEntryPointsParams)
            m_maxEntryPointsParams = val;
    }
    int baseOpcode() { return m_baseOpcode; }
    void setBaseOpcode(int base) { m_baseOpcode = base; }

    const char* sideString(SideType side) {
        const char* retval;
        switch (side) {
            case CLIENT_SIDE:
                retval = "client";
                break;
            case SERVER_SIDE:
                retval = "server";
                break;
            case WRAPPER_SIDE:
                retval = "wrapper";
                break;
            default:
                retval = "unknown";
        }
        return retval;
    }

    StringVec& clientContextHeaders() { return m_clientContextHeaders; }
    StringVec& encoderHeaders() { return m_encoderHeaders; }
    StringVec& serverContextHeaders() { return m_serverContextHeaders; }
    StringVec& decoderHeaders() { return m_decoderHeaders; }

    EntryPoint* findEntryByName(const std::string& name);
    int genOpcodes(const std::string& filename);
    int genAttributesTemplate(const std::string& filename);
    int genProcTypes(const std::string& filename, SideType side);
    int genFuncTable(const std::string& filename, SideType side);

    int genContext(const std::string& filename, SideType side);
    int genContextImpl(const std::string& filename, SideType side);

    int genEntryPoints(const std::string& filename, SideType side);

    int genEncoderHeader(const std::string& filename);
    int genEncoderImpl(const std::string& filename);

    int genDecoderHeader(const std::string& filename);
    int genDecoderImpl(const std::string& filename);

   protected:
    virtual void printHeader(FILE* fp) const;
    std::string m_basename;
    StringVec m_clientContextHeaders;
    StringVec m_encoderHeaders;
    StringVec m_serverContextHeaders;
    StringVec m_decoderHeaders;
    size_t m_maxEntryPointsParams;  // record the maximum number of parameters in the entry points;
    int m_baseOpcode;
    int setGlobalAttribute(const std::string& line, size_t lc);
};

#endif