// -*- mode: C++; c-file-style: "cc-mode" -*-
//*************************************************************************
//
// Copyright 2010-2023 by Wilson Snyder. This program is free software; you can
// redistribute it and/or modify it under the terms of either the GNU
// Lesser General Public License Version 3 or the Perl Artistic License
// Version 2.0.
// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
//
//*************************************************************************

#ifdef IS_VPI

#include "vpi_user.h"

#include <cstdlib>

#else

#include "verilated.h"
#include "verilated_vcd_c.h"
#include "verilated_vpi.h"

#include "Vt_vpi_module_empty.h"
#include "Vt_vpi_module_empty__Dpi.h"
#include "svdpi.h"

#endif

#include <cstdio>
#include <cstring>
#include <iostream>

// These require the above. Comment prevents clang-format moving them
#include "TestSimulator.h"
#include "TestVpi.h"

// __FILE__ is too long
#define FILENM "t_vpi_module_empty.cpp"

#define DEBUG \
    if (0) printf

#define CHECK_RESULT_NZ(got) \
    if (!(got)) { \
        printf("%%Error: %s:%d: GOT = NULL  EXP = !NULL\n", FILENM, __LINE__); \
        return __LINE__; \
    }

extern "C" {
int mon_check() {
#ifdef TEST_VERBOSE
    printf("-mon_check()\n");
#endif

    TestVpiHandle it = vpi_iterate(vpiModule, NULL);
    CHECK_RESULT_NZ(it);
    return 0;  // Ok
}
}
//======================================================================

#ifdef IS_VPI

static int mon_check_vpi() {
    TestVpiHandle href = vpi_handle(vpiSysTfCall, 0);
    s_vpi_value vpi_value;

    vpi_value.format = vpiIntVal;
    vpi_value.value.integer = mon_check();
    vpi_put_value(href, &vpi_value, NULL, vpiNoDelay);

    return 0;
}

static s_vpi_systf_data vpi_systf_data[] = {{vpiSysFunc, vpiIntFunc, (PLI_BYTE8*)"$mon_check",
                                             (PLI_INT32(*)(PLI_BYTE8*))mon_check_vpi, 0, 0, 0},
                                            0};

// cver entry
void vpi_compat_bootstrap(void) {
    p_vpi_systf_data systf_data_p;
    systf_data_p = &(vpi_systf_data[0]);
    while (systf_data_p->type != 0) vpi_register_systf(systf_data_p++);
}

// icarus entry
void (*vlog_startup_routines[])() = {vpi_compat_bootstrap, 0};

#else

int main(int argc, char** argv) {
    const std::unique_ptr<VerilatedContext> contextp{new VerilatedContext};

    uint64_t sim_time = 1100;
    contextp->debug(0);
    contextp->commandArgs(argc, argv);
    // we're going to be checking for these errors do don't crash out
    contextp->fatalOnVpiError(0);

    // Test second construction
    const std::unique_ptr<VM_PREFIX> topp{new VM_PREFIX{contextp.get(),
                                                        // Note null name - we're flattening it out
                                                        ""}};

#ifdef VERILATOR
#ifdef TEST_VERBOSE
    contextp->scopesDump();
#endif
#endif

    topp->eval();
    VerilatedVpi::callValueCbs();
    TestVpiHandle vh = vpi_handle_by_name((PLI_BYTE8*)"top.sv_if_i.a", NULL);
    CHECK_RESULT_NZ(vh);
    TestVpiHandle it = vpi_iterate(vpiModule, NULL);
    CHECK_RESULT_NZ(it);

    topp->final();
    return 0;
}

#endif