/************************************************************************
 ************************************************************************
    FAUST compiler
    Copyright (C) 2003-2018 GRAME, Centre National de Creation Musicale
    ---------------------------------------------------------------------
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 2.1 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 ************************************************************************
 ************************************************************************/

#ifndef _C_CODE_CONTAINER_H
#define _C_CODE_CONTAINER_H

#include "c_instructions.hh"
#include "code_container.hh"
#include "dsp_factory.hh"
#include "omp_code_container.hh"
#include "vec_code_container.hh"
#include "wss_code_container.hh"

#ifdef WIN32
#pragma warning(disable : 4250)
#endif

/**
 * Implement C FIR base container.
 */

class CCodeContainer : public virtual CodeContainer {
   protected:
    CInstVisitor* fCodeProducer;
    std::ostream* fOut;

    virtual void produceClass();
    void         produceMetadata(int tabs);
    void         produceInit(int tabs);

    virtual void produceInternal();

    virtual void generateComputeAux(int tab) = 0;

    void generateCompute(int n)
    {
        // Possibly generate separated functions
        tab(n, *fOut);
        fCodeProducer->Tab(n);
        generateComputeFunctions(fCodeProducer);

        char* archs = getenv("FAUST_ARCHS");
        if (archs) {
            tab(n, *fOut);
            for (const auto& it : tokenizeString(archs, ' ')) {
                *fOut << "__attribute__ ((target (\"arch=" << it << "\")))";
                generateComputeAux(n);
                tab(n, *fOut);
            }
            // Default version
            *fOut << "__attribute__ ((target (\"default\")))";
            generateComputeAux(n);
            tab(n, *fOut);
        } else {
            generateComputeAux(n);
        }
    }

    void generateAllocateFun(int n)
    {
        if (fAllocateInstructions->fCode.size() > 0) {
            tab(n, *fOut);
            *fOut << "void allocate" << fKlassName << "(" << fKlassName << "* dsp) {";
            tab(n + 1, *fOut);
            generateAllocate(fCodeProducer);
            back(1, *fOut);
            *fOut << "}";
        }
    }

    void generateDestroyFun(int n)
    {
        if (fDestroyInstructions->fCode.size() > 0) {
            tab(n, *fOut);
            *fOut << "void destroy" << fKlassName << "(" << fKlassName << "* dsp) {";
            tab(n + 1, *fOut);
            generateDestroy(fCodeProducer);
            back(1, *fOut);
            *fOut << "}";
            tab(n, *fOut);
        }
    }

    void generateHeader1(int n)
    {
        tab(n, *fOut);
        *fOut << "#ifdef __cplusplus" << std::endl;
        *fOut << "extern \"C\" {" << std::endl;
        *fOut << "#endif" << std::endl;
        tab(n, *fOut);

        *fOut << "#if defined(_WIN32)" << std::endl;
        *fOut << "#define RESTRICT __restrict" << std::endl;
        *fOut << "#else" << std::endl;
        *fOut << "#define RESTRICT __restrict__" << std::endl;
        *fOut << "#endif" << std::endl;
        tab(n, *fOut);
    }

    void generateHeader2(int n)
    {
        tab(n, *fOut);
        *fOut << "#ifndef FAUSTCLASS " << std::endl;
        *fOut << "#define FAUSTCLASS " << fKlassName << std::endl;
        *fOut << "#endif" << std::endl;
        tab(n, *fOut);

        *fOut << "#ifdef __APPLE__ " << std::endl;
        *fOut << "#define exp10f __exp10f" << std::endl;
        *fOut << "#define exp10 __exp10" << std::endl;
        *fOut << "#endif" << std::endl;

        if (gGlobal->gLightMode) {
            tab(n, *fOut);
            *fOut << "#define max(a,b) ((a < b) ? b : a)\n";
            *fOut << "#define min(a,b) ((a < b) ? a : b)\n";
            tab(n, *fOut);
        }
    }

    void printMathHeader()
    {
        // For mathematical functions
        if (gGlobal->gFastMathLib != "") {
            includeFastMath();
        } else {
            addIncludeFile("<math.h>");
        }

        // For malloc/free
        addIncludeFile("<stdlib.h>");
        // For int64_t type
        addIncludeFile("<stdint.h>");
    }

   public:
    CCodeContainer() {}
    CCodeContainer(const std::string& name, int numInputs, int numOutputs, std::ostream* out)
    {
        initialize(numInputs, numOutputs);
        fKlassName = name;
        fOut       = out;

        printMathHeader();

        fCodeProducer = new CInstVisitor(out, name);
    }

    virtual ~CCodeContainer()
    {
        // fCodeProducer is a 'Garbageable'
    }

    virtual dsp_factory_base* produceFactory();

    virtual void printHeader()
    {
        CodeContainer::printHeader(*fOut);

        tab(0, *fOut);
        *fOut << "#ifndef  __" << gGlobal->gClassName << "_H__";
        tab(0, *fOut);
        *fOut << "#define  __" << gGlobal->gClassName << "_H__" << std::endl << std::endl;
    }

    virtual void printFloatDef() { printfloatdef(*fOut); }

    virtual void printFooter()
    {
        tab(0, *fOut);
        *fOut << "#endif" << std::endl;
    }

    CodeContainer*        createScalarContainer(const std::string& name, int sub_container_type);
    static CodeContainer* createScalarContainer(const std::string& name, int numInputs,
                                                int numOutputs, std::ostream* dst,
                                                int sub_container_type);

    static CodeContainer* createContainer(const std::string& name, int numInputs, int numOutputs,
                                          std::ostream* dst = new std::stringstream());
};

/**
 * Implement C FIR scalar container.
 */

class CScalarCodeContainer : public CCodeContainer {
   protected:
   public:
    CScalarCodeContainer() {}
    CScalarCodeContainer(const std::string& name, int numInputs, int numOutputs, std::ostream* out,
                         int sub_container_type);
    virtual ~CScalarCodeContainer() {}

    void generateComputeAux(int tab);
};

/**
 For -mem3 generation mode (special version for SYFALA).
 */

class CScalarCodeContainer1 : public CCodeContainer {
   protected:
    void produceClass();

   public:
    CScalarCodeContainer1() {}
    CScalarCodeContainer1(const std::string& name, int numInputs, int numOutputs, std::ostream* out,
                          int sub_container_type)
        : CCodeContainer(name, numInputs, numOutputs, out)
    {
        fSubContainerType = sub_container_type;
    }
    virtual ~CScalarCodeContainer1() {}

    void generateComputeAux(int tab);
};

/**
 Implement C FIR vector container.
 */

class CVectorCodeContainer : public VectorCodeContainer, public CCodeContainer {
   protected:
   public:
    CVectorCodeContainer(const std::string& name, int numInputs, int numOutputs, std::ostream* out);
    virtual ~CVectorCodeContainer() {}

    void generateComputeAux(int tab);
};

/**
 For -mem3 generation mode (special version for SYFALA).
 */

class CVectorCodeContainer1 : public VectorCodeContainer, public CScalarCodeContainer1 {
   protected:
   public:
    CVectorCodeContainer1(const std::string& name, int numInputs, int numOutputs,
                          std::ostream* out);
    virtual ~CVectorCodeContainer1() {}

    void generateComputeAux(int tab);
};

/**
 Implement C FIR OpenMP container.
 */

class COpenMPCodeContainer : public OpenMPCodeContainer, public CCodeContainer {
   protected:
   public:
    COpenMPCodeContainer(const std::string& name, int numInputs, int numOutputs, std::ostream* out);
    virtual ~COpenMPCodeContainer() {}

    void generateComputeAux(int tab);
};

/**
 Implement C FIR Work Stealing container.
 */

class CWorkStealingCodeContainer : public WSSCodeContainer, public CCodeContainer {
   protected:
   public:
    CWorkStealingCodeContainer(const std::string& name, int numInputs, int numOutputs,
                               std::ostream* out);
    virtual ~CWorkStealingCodeContainer() {}

    void generateComputeAux(int tab);
};

#endif