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//==========================================================================

//

//      cdl3.cxx

//

//      Basic testing of the CdlInterpreter class

//

//==========================================================================

//####COPYRIGHTBEGIN####

//                                                                          

// ----------------------------------------------------------------------------

// Copyright (C) 1999, 2000 Red Hat, Inc.

//

// This file is part of the eCos host tools.

//

// This program is free software; you can redistribute it and/or modify it 

// under the terms of the GNU General Public License as published by the Free 

// Software Foundation; either version 2 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 General Public License for 

// more details.

// 

// You should have received a copy of the GNU General Public License along with

// this program; if not, write to the Free Software Foundation, Inc., 

// 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

//

// ----------------------------------------------------------------------------

//                                                                          

//####COPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####                                             

//

// Author(s):           bartv

// Contributors:        bartv

// Date:                1999-01-21

// Description:         This test case deals with simple uses of the

//                      CdlInterpreter class, independent from any

//                      configuration data.

//

//####DESCRIPTIONEND####

//==========================================================================

#include <cstdio>

#include <cdlconfig.h>

#include <cdl.hxx>

#include <cyg/infra/cyg_ass.h>

#include <cyg/infra/cyg_trac.h>

#include <cyg/infra/testcase.h>

#include <cstdlib>

static CdlInterpreter interp = 0;

static int

extra_command1(ClientData data, Tcl_Interp* tcl_interp, int argc, char** argv)

{

    if (static_cast<CdlInterpreter>(data) != interp) {

        char* msg = "ClientData does not correspond to interpreter";

        Tcl_SetResult(tcl_interp, msg, TCL_STATIC);

        CYG_TEST_FAIL(msg);

        return TCL_ERROR;

    }

    if ((3 != argc) ||

        (0 != strcmp("extra_command1", argv[0])) ||

        (0 != strcmp("first_arg",      argv[1])) ||

        (0 != strcmp("second_arg",     argv[2]))) {

        char* msg = "Wrong arguments passed to extra_command1";

        interp->set_result(msg);

        CYG_TEST_FAIL(msg);

        return TCL_ERROR;

    }

    interp->set_result("To be or not to be");

    return TCL_OK;

}

static int

extra_command2(ClientData data, Tcl_Interp* tcl_interp, int argc, char** argv)

{

    if (0 != data) {

        char*msg = "ClientData should be zero here";

        Tcl_SetResult(tcl_interp, msg, TCL_STATIC);

        CYG_TEST_FAIL(msg);

        return TCL_ERROR;

    }

    if ((2 != argc) ||

        (0 != strcmp("extra_command2", argv[0])) ||

        (0 != strcmp("third_arg",      argv[1]))) {

        char* msg = "Wrong arguments passed to extra_command2";

        Tcl_SetResult(tcl_interp, msg, TCL_STATIC);

        CYG_TEST_FAIL(msg);

        return TCL_ERROR;

    }

    Tcl_SetResult(tcl_interp, "That is the question", TCL_STATIC);

    return TCL_OK;

}

int

main(int argc, char** argv)

{

    // Start by creating a simple interpreter using default settings

    bool ok = true;

    interp = CdlInterpreterBody::make();

    if (0 == interp) {

        CYG_TEST_FAIL_FINISH("Unable to create a new interpreter with default settings");

    }

    if ((!interp->check_this(cyg_quick)) ||

        (!interp->check_this(cyg_extreme))) {

        CYG_TEST_FAIL("check_this() failed");

        ok = false;

    }

    if ((0 != interp->get_configuration()) ||

        (0 != interp->get_package())) {

        CYG_TEST_FAIL("a new interpreter should not be associated with any package or configuration");

        ok = false;

    }

    // Now try evaluating a very simple script

    std::string str_result;

    if ((TCL_OK != interp->eval("expr 2 * 2 * 2\n", str_result)) ||

        ("8" != str_result)) {

        CYG_TEST_FAIL("simple command execution failed");

        ok = false;

    }

    // And something a bit more interesting

    std::string fibonaci = "                                                            \n\

proc fibonaci { arg } {                                                                 \n\

    if { $arg < 3 } {                                                                   \n\

        return 1                                                                        \n\

    } else {                                                                            \n\

        set result [expr [fibonaci [expr $arg - 1]] + [fibonaci [expr $arg - 2]]]       \n\

        return $result                                                                  \n\

    }                                                                                   \n\

}                                                                                       \n\

return [fibonaci 10]                                                                    \n\

";

    if ((TCL_OK != interp->eval(fibonaci, str_result)) ||

        ("55" != str_result)) {

        CYG_TEST_FAIL("full script execution failed");

        ok = false;

    }

    // A new interpreter should not know about "extra_command1"

    if ((TCL_OK != interp->eval("info command extra_command1", str_result)) ||

        ("" != str_result)) {

        CYG_TEST_FAIL("new interpreter should not have an extra_command1 command");

        ok = false;

    }

    try {

        interp->add_command("extra_command1", &extra_command1, 0);

        if ((TCL_OK != interp->eval("info command extra_command1", str_result)) ||

            ("extra_command1" != str_result)) {

            CYG_TEST_FAIL("interpreter does not know the new extra_command1 command");

            ok = false;

        }

        if ((TCL_OK != interp->eval("extra_command1 first_arg second_arg", str_result)) ||

            ("To be or not to be" != str_result)) {

            CYG_TEST_FAIL("execution of a new command failed");

            ok = false;

        }

        interp->remove_command("extra_command1");

    }

    catch(std::bad_alloc e) {

        CYG_TEST_FAIL("unable to add a new command to the interpreter");

        ok = false;

    }

    // Check the variables support

    try {

        interp->set_variable("some_variable", "random_value");

    }

    catch(std::bad_alloc e) {

        CYG_TEST_FAIL("unable to set a global variable inside the interpreter");

        ok = false;

    }

    if ("random_value" != interp->get_variable("some_variable")) {

        CYG_TEST_FAIL("unable to retrieve global variable setting");

        ok = false;

    }

    // Make absolutely sure the variable exists

    if ((TCL_OK != interp->eval("info exists ::some_variable", str_result)) ||

        ("1" != str_result)) {

        CYG_TEST_FAIL("Tcl code does not know about new global variable");

    }

    interp->unset_variable("some_variable");

    if ("" != interp->get_variable("some_variable")) {

        CYG_TEST_FAIL("variable still exists after it has been removed");

        ok = false;

    }

    // Check the AssocData support

    if (0 != interp->get_assoc_data("some_key")) {

        CYG_TEST_FAIL("unexpected assoc data already present");

        ok = false;

    }

    interp->set_assoc_data("some_key", static_cast<ClientData>(&ok), 0);

    if (&ok != static_cast<bool*>(interp->get_assoc_data("some_key"))) {

        CYG_TEST_FAIL("unable to retrieve assoc data");

        ok = false;

    }

    interp->delete_assoc_data("some_key");

    if (0 != interp->get_assoc_data("some_key")) {

        CYG_TEST_FAIL("assoc data still present after retrieval");

        ok = false;

    }

    // Make the interpreter safe. This should remove the file command.

    if ((TCL_OK != interp->eval("info command file", str_result)) ||

        ("file" != str_result)) {

        CYG_TEST_FAIL("interpreter should still have the file command");

        ok = false;

    }

    interp->make_safe();

    if ((TCL_OK != interp->eval("info command file", str_result)) ||

        ("" != str_result)) {

        CYG_TEST_FAIL("interpreter should no longer have the file command");

        ok = false;

    }

    // This is just a compilation check to make sure that interpreters can

    // be deleted.

#ifdef CYGBLD_LIBCDL_USE_SMART_POINTERS

    interp.destroy();

#else

    delete interp;

    interp = 0;

#endif    

    if (ok) {

        CYG_TEST_PASS("interpreter with default settings is functional");

    }

    ok = true;

    // Now try to create a new Tcl interpreter, register the extra command

    // at the Tcl level, and turn it into a CdlInterpreter

    Tcl_Interp* tcl_interp = Tcl_CreateInterp();

    if (0 == tcl_interp) {

        CYG_TEST_FAIL_FINISH("unable to create new Tcl interpreter");

    }

    if (0 == Tcl_CreateCommand(tcl_interp, "extra_command2", &extra_command2, 0, 0)) {

        CYG_TEST_FAIL_FINISH("unable to add new command to Tcl interpreter");

    }

    // And turn the Tcl interpreter into a Cdl one.

    interp = CdlInterpreterBody::make(tcl_interp);

    if (0 == interp) {

        CYG_TEST_FAIL_FINISH("unable to create new CDL interpreter using existing Tcl one");

        ok = false;

    }

    if (!interp->check_this(cyg_quick)) {

        CYG_TEST_FAIL_FINISH("new CDL interpreter fails checks");

        ok = false;

    }

    // The new interpreter should not have an extra_command1 command.

    if ((TCL_OK != interp->eval("info command extra_command1", str_result)) ||

        ("" != str_result)) {

        CYG_TEST_FAIL("new interpreter should not have an extra_command1 command");

        ok = false;

    }

    // But it should still have an extra_command2 command

    if ((TCL_OK != interp->eval("info command extra_command2", str_result)) ||

        ("extra_command2" != str_result)) {

        CYG_TEST_FAIL("new interpreter should have an extra_command2 command");

        ok = false;

    }

    // And that command should work

    if ((TCL_OK != interp->eval("extra_command2 third_arg", str_result)) ||

        ("That is the question" != str_result)) {

        CYG_TEST_FAIL("extra_command2 command not functional");

        ok = false;

    }

    // Get rid of the CdlInterpreter object. The Tcl interpreter should still

    // be valid.

#ifdef CYGBLD_LIBCDL_USE_SMART_POINTERS

    interp.destroy();

#else

    delete interp;

    interp = 0;

#endif

    if (Tcl_InterpDeleted(tcl_interp)) {

        CYG_TEST_FAIL("Tcl interpreter deleted when it should still be around");

        ok = false;

    }

    if (ok) {

        CYG_TEST_PASS("custom interpreter is functional");

    }

    return EXIT_SUCCESS;

}