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//{{{  Banner                           

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

//

//     package.cxx

//

//     Implementation of the CdlPackage class

//

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

//####COPYRIGHTBEGIN####

//                                                                          

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

// Copyright (C) 2002 Bart Veer

// 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

// Contact(s):  bartv

// Date:        1999/03/01

// Version:     0.02

//

//####DESCRIPTIONEND####

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

//}}}

//{{{  #include's                       

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

#include "cdlconfig.h"

// Get the infrastructure types, assertions, tracing and similar

// facilities.

#include <cyg/infra/cyg_ass.h>

#include <cyg/infra/cyg_trac.h>

// <cdl.hxx> defines everything implemented in this module.

// It implicitly supplies <string>, <vector> and <map> because

// the class definitions rely on these headers.

#include <cdl.hxx>

//}}}

//{{{  Statics                          

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

CYGDBG_DEFINE_MEMLEAK_COUNTER(CdlPackageBody);

//}}}

//{{{  Constructor                      

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

// Constructor. The real work is actually done in the base classes

// and the parser.

CdlPackageBody::CdlPackageBody(std::string name_arg, CdlConfiguration toplevel, std::string dir)

    : CdlNodeBody(name_arg),

      CdlContainerBody(),

      CdlUserVisibleBody(),

      CdlValuableBody(CdlValueFlavor_BoolData),

      CdlParentableBody(),

      CdlBuildableBody(),

      CdlDefinableBody(),

      CdlLoadableBody(toplevel, dir),

      CdlBuildLoadableBody(),

      CdlDefineLoadableBody()

{

    CYG_REPORT_FUNCNAME("CdlPackageBody:: constructor");

    CYG_REPORT_FUNCARG1XV(this);

    loaded_for_template   = false;

    loaded_for_hardware   = false;

    cdlpackagebody_cookie = CdlPackageBody_Magic;

    CYGDBG_MEMLEAK_CONSTRUCTOR();

    CYG_POSTCONDITION_THISC();

    CYG_REPORT_RETURN();

}

//}}}

//{{{  Destructor                       

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

// Most of the work is done in the base classes.

CdlPackageBody::~CdlPackageBody()

{

    CYG_REPORT_FUNCNAME("CdlPackageBody:: destructor");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    loaded_for_template   = false;

    loaded_for_hardware   = false;

    cdlpackagebody_cookie = CdlPackageBody_Invalid;

    CYGDBG_MEMLEAK_DESTRUCTOR();

    CYG_REPORT_RETURN();

}

//}}}

//{{{  parse_package()                  

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

// Parsing a package definition. This routine gets invoked directly from the

// Tcl interpreter, when the cdl_package command is encountered. The

// command takes two arguments, a name and a body of properties, and there

// should only be one cdl_package command per package.

//

// At the point that the cdl_package command is executed the CdlPackage

// object should already exist, and in fact it should be the current

// interpreter's loadable. Obviously the name should be checked. The

// main purpose of the cdl_package command is to fill in some extra

// information in the form of properties.

//

// A package is a buildable, valuable, uservisible, ... object so it

// inherits properties from all three. In practice some of the

// properties from the base classes are not actually legal, but that

// will be caught by the validation code. Additional properties

// relevant to a package are: parent, license_proc, install_proc, and

// wizard. It is harmless (but unnecessary) to allow components etc.

// to be defined inside a package definition.

int

CdlPackageBody::parse_package(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackageBody::parse_package", "result %d");

    CYG_REPORT_FUNCARG1("argc %d", argc);

    CYG_PRECONDITION_CLASSC(interp);

    std::string  diag_argv0      = CdlParse::get_tcl_cmd_name(argv[0]);

    CdlLoadable  loadable       = interp->get_loadable();

    CdlPackage   package        = dynamic_cast<CdlPackage>(loadable);

    CdlContainer parent         = package->get_parent();

    CdlToplevel  toplevel       = interp->get_toplevel();

    std::string filename        = interp->get_context();

    CYG_ASSERT_CLASSC(loadable);        // There should always be a loadable during parsing

    CYG_ASSERT_CLASSC(package);         // And packages are the only loadable for software CDL

    CYG_ASSERT_CLASSC(toplevel);

    CYG_ASSERTC(dynamic_cast<CdlToplevel>(parent) == toplevel);    // The package cannot have been reparented yet.

    CYG_ASSERTC("" != filename);

    CYG_UNUSED_PARAM(CdlContainer, parent);

    CYG_UNUSED_PARAM(CdlToplevel, toplevel);

    // There should be no current node, in fact the cdl_package command

    // can only exist at the toplevel of the original script courtesy

    // of commands being pushed and popped.

    CYG_ASSERTC(0 == interp->get_node());

    // Also, the package should be the current container.

    CYG_ASSERTC(package == dynamic_cast<CdlPackage>(interp->get_container()));

    // Declare these outside the scope of the try statement, to allow

    // goto calls for the error handling.

    const std::vector<CdlProperty>& properties = package->get_properties();

    CdlInterpreterBody::NodeSupport interp_node(interp, package);

    static CdlInterpreterCommandEntry commands[] =

    {

        CdlInterpreterCommandEntry("hardware",           &parse_hardware                    ),

        CdlInterpreterCommandEntry("license_proc",       &parse_license_proc                ),

        CdlInterpreterCommandEntry("install_proc",       &parse_install_proc                ),

        CdlInterpreterCommandEntry("cdl_component",      &CdlComponentBody::parse_component ),

        CdlInterpreterCommandEntry("cdl_option",         &CdlOptionBody::parse_option       ),

        CdlInterpreterCommandEntry("cdl_interface",      &CdlInterfaceBody::parse_interface ),

        CdlInterpreterCommandEntry("cdl_dialog",         &CdlDialogBody::parse_dialog       ),

        CdlInterpreterCommandEntry("cdl_wizard",         &CdlWizardBody::parse_wizard       ),

        CdlInterpreterCommandEntry("",                   0                                  )

    };

    std::vector<CdlInterpreterCommandEntry>  new_commands;

    int i;

    // All parsing errors may result in an exception, under the control of

    // application code. This exception must not pass through the Tcl interpreter.

    int result = TCL_OK;

    try {

        // Currently there are no options. This may change in future.

        if (3 != argc) {

            CdlParse::report_error(interp, "",

                                   std::string("Incorrect number of arguments to `") + diag_argv0 +

                                   "'\nExpecting name and properties list.");

        } else if (argv[1] != loadable->get_name()) {

            CdlParse::report_error(interp, "",

                                   std::string("Incorrect package name in CDL script.\n") +

                                   "This package is `" + loadable->get_name() + "'\n" +

                                   "The CDL script `" + filename + "' defines a package `" + argv[1] + "'.");

        } else if (0 != properties.size()) {

            CdlParse::report_error(interp, "",

                                   std::string("Duplicate cdl_package commands for package `") + argv[1] + "'.");

        } else if (!Tcl_CommandComplete(CDL_TCL_CONST_CAST(char*, argv[2]))) {

            CdlParse::report_error(interp, "",

                                   std::string("Invalid property list for cdl_package `") + argv[1] + "'.");

        } else {

            for (i = 0; 0 != commands[i].command; i++) {

                new_commands.push_back(commands[i]);

            }

            CdlBuildLoadableBody::add_property_parsers(new_commands);

            CdlBuildableBody::add_property_parsers(new_commands);

            CdlDefineLoadableBody::add_property_parsers(new_commands);

            CdlDefinableBody::add_property_parsers(new_commands);

            CdlParentableBody::add_property_parsers(new_commands);

            CdlValuableBody::add_property_parsers(new_commands);

            CdlUserVisibleBody::add_property_parsers(new_commands);

            CdlNodeBody::add_property_parsers(new_commands);

            // Now evaluate the body. If an error occurs then typically

            // this will be reported via CdlParse::report_error(),

            // but any exceptions will have been intercepted and

            // turned into a Tcl error.

            CdlInterpreterBody::CommandSupport interp_cmds(interp, new_commands);

            result = interp->eval(argv[2]);

            if (TCL_OK == result) {

                // Even if there were errors, they were not fatal. There may

                // now be a number of properties for this package, and some

                // validation should take place. Start with the base classes.

                package->CdlNodeBody::check_properties(interp);

                package->CdlUserVisibleBody::check_properties(interp);

                package->CdlValuableBody::check_properties(interp);

                package->CdlParentableBody::check_properties(interp);

                package->CdlBuildableBody::check_properties(interp);

                package->CdlBuildLoadableBody::check_properties(interp);

                package->CdlDefinableBody::check_properties(interp);

                package->CdlDefineLoadableBody::check_properties(interp);

                // Some of the properties in the base classes are not actually

                // appropriate. A package is valuable, but it can only be

                // modified by loading and unloading. Many of the value-related

                // properties do not make sense.

                if (package->count_properties(CdlPropertyId_Flavor) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have a `flavor' property.");

                }

                if (package->count_properties(CdlPropertyId_EntryProc) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have an `entry_proc' property.");

                }

                if (package->count_properties(CdlPropertyId_CheckProc) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have a `check_proc' property.");

                }

                // BLV: this reasoning is faulty, it should be possible to

                // control the enabled aspect via an expression. That would

                // need option processing for the default_value property.

                if (package->count_properties(CdlPropertyId_DefaultValue) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have a `default_value' property.");

                }

                if (package->count_properties(CdlPropertyId_LegalValues) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have a `legal_values' property.");

                }

                if (package->count_properties(CdlPropertyId_Calculated) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have a `calculated' property.");

                }

                if (package->count_properties(CdlPropertyId_Dialog) > 0) {

                    CdlParse::report_error(interp, "", "A package should not have a `dialog' property.");

                }

                // There should be at most one each of license_proc, install_proc, include_dir,

                // export_to, library, makefile, and wizard.

                if (package->count_properties(CdlPropertyId_LicenseProc) > 1) {

                    CdlParse::report_error(interp, "", "A package should have at most one `license_proc' property.");

                }

                if (package->count_properties(CdlPropertyId_InstallProc) > 1) {

                    CdlParse::report_error(interp, "", "A package should have at most one `install_proc' property.");

                }

            }

        }

    } catch (std::bad_alloc e) {

        // Errors at this stage should be reported via Tcl, not via C++

        interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Out of memory"));

        result = TCL_ERROR;

    } catch (CdlParseException e) {

        interp->set_result(e.get_message());

        result = TCL_ERROR;

    } catch(...) {

        interp->set_result(CdlParse::construct_diagnostic(interp, "internal error", "", "Unexpected C++ exception"));

        result = TCL_ERROR;

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

//}}}

//{{{  Package properties               

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

// Syntax: hardware

int

CdlPackageBody::parse_hardware(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_hardware", "result %d");

    int result = CdlParse::parse_minimal_property(interp, argc, argv, CdlPropertyId_Hardware, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

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

// Syntax: install_proc <tclcode>

int

CdlPackageBody::parse_install_proc(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_install_proc", "result %d");

    int result = CdlParse::parse_tclcode_property(interp, argc, argv, CdlPropertyId_InstallProc, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

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

// Syntax: license_proc <tclcode>

int

CdlPackageBody::parse_license_proc(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("parse_license_proc", "result %d");

    int result = CdlParse::parse_tclcode_property(interp, argc, argv, CdlPropertyId_LicenseProc, 0, 0);

    CYG_REPORT_RETVAL(result);

    return result;

}

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

bool

CdlPackageBody::is_hardware_package() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackage::is_hardware_package", "result %d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = false;

    if (has_property(CdlPropertyId_Hardware)) {

        result = true;

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

bool

CdlPackageBody::has_install_proc() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackage::has_install_proc", "result 5d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = false;

    if (has_property(CdlPropertyId_InstallProc)) {

        result = true;

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

const cdl_tcl_code&

CdlPackageBody::get_install_proc() const

{

    CYG_REPORT_FUNCNAME("CdlPackage::get_install_proc");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    static cdl_tcl_code null_result = "";

    cdl_tcl_code& result = null_result;

    CdlProperty prop = get_property(CdlPropertyId_InstallProc);

    if (0 != prop) {

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(prop);

        result = tclprop->get_code();

    }

    CYG_REPORT_RETURN();

    return result;

}

bool

CdlPackageBody::has_license_proc() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackage::has_install_proc", "result 5d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = false;

    if (has_property(CdlPropertyId_LicenseProc)) {

        result = true;

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

const cdl_tcl_code&

CdlPackageBody::get_license_proc() const

{

    CYG_REPORT_FUNCNAME("CdlPackage::get_install_proc");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    static cdl_tcl_code null_result = "";

    cdl_tcl_code& result = null_result;

    CdlProperty prop = get_property(CdlPropertyId_LicenseProc);

    if (0 != prop) {

        CdlProperty_TclCode tclprop = dynamic_cast<CdlProperty_TclCode>(prop);

        result = tclprop->get_code();

    }

    CYG_REPORT_RETURN();

    return result;

}

//}}}

//{{{  Propagation support              

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

void

CdlPackageBody::update(CdlTransaction transaction, CdlUpdate update)

{

    CYG_REPORT_FUNCNAME("CdlPackage::update");

    this->CdlValuableBody::update(transaction, update);

    this->CdlContainerBody::update(transaction, update);

    CYG_REPORT_RETURN();

}

//}}}

//{{{  Persistence support              

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

void

CdlPackageBody::initialize_savefile_support(CdlToplevel toplevel)

{

    CYG_REPORT_FUNCNAME("CdlPackage::initialize_savefile_support");

    toplevel->add_savefile_command("cdl_package", 0, &savefile_package_command);

    CdlValuableBody::initialize_savefile_support(toplevel, "cdl_package");

}

void

CdlPackageBody::save(CdlInterpreter interp, Tcl_Channel chan, int indentation, bool minimal)

{

    CYG_REPORT_FUNCNAME("CdlPackage::save");

    CYG_REPORT_FUNCARG5XV(this, interp, chan, indentation, minimal);

    CYG_PRECONDITION_THISC();

    CYG_PRECONDITION_CLASSC(interp);

    // For a minimal save there is sufficient data in the savefile header

    // to allow the package to be loaded. It is still necessary to output

    // a cdl_package command if there were additional savefile strings.

    if (!minimal || this->has_additional_savefile_information()) {

        // Start with the UserVisible data, which will result in a suitable set

        // of comments before the package definition itself.

        this->CdlUserVisibleBody::save(interp, chan, indentation, minimal);

        // Now output the line "cdl_package <name> {"

        // The name is guaranteed to be a valid C preprocessor symbol, so it

        // is not going to need any quoting.

        std::string data = std::string(indentation, ' ') + "cdl_package " + get_name() + " {\n";

        std::string indent_string = std::string(indentation + 4, ' ');

        // The value associated with a package cannot be changed simply

        // by editing the savefile. Add a comment to that effect.

        if (!minimal) {

            data += indent_string + "# Packages cannot be added or removed, nor can their version be changed,\n";

            data += indent_string + "# simply by editing their value. Instead the appropriate configuration\n";

            data += indent_string + "# should be used to perform these actions.\n\n";

        }

        // Output the command and the comment.

        interp->write_data(chan, data);

        // Deal with the value

        this->CdlValuableBody::save(interp, chan, indentation + 4, false, minimal);

        // And with any unrecognised data

        this->CdlNodeBody::save(interp, chan, indentation + 4, minimal);

        // Close the cdl_package body. A blank line is added here.

        data = "};\n\n";

        interp->write_data(chan, data);

    }

    // Packages are containers, so dump the contents as well.

    this->CdlContainerBody::save(interp, chan, indentation, minimal);

    CYG_REPORT_RETURN();

}

int

CdlPackageBody::savefile_package_command(CdlInterpreter interp, int argc, const char* argv[])

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackage::savefile_package_command", "result %d");

    CYG_PRECONDITION_CLASSC(interp);

    int result = TCL_OK;

    CdlToplevel toplevel = interp->get_toplevel();

    CYG_ASSERT_CLASSC(toplevel);

    CdlConfiguration config = dynamic_cast<CdlConfiguration>(toplevel);

    CYG_ASSERT_CLASSC(config);

    std::vector<CdlInterpreterCommandEntry> subcommands;

    std::vector<CdlInterpreterCommandEntry>* toplevel_commands = 0;

    CdlNode old_node = 0;

    try {

        if (3 != argc) {

            CdlParse::report_error(interp, "", "Invalid cdl_package command in savefile, expecting two arguments.");

        } else {

            CdlNode current_node = config->lookup(argv[1]);

            if (0 == current_node) {

                CdlParse::report_error(interp, "",

                                       std::string("The savefile contains a cdl_package command for `") +

                                       argv[1] + "' which has not been loaded.");

            } else {

                config->get_savefile_subcommands("cdl_package", subcommands);

                toplevel_commands = interp->push_commands(subcommands);

                old_node = interp->push_node(current_node);

                std::string tcl_result;

                result = interp->eval(argv[2], tcl_result);

                interp->pop_commands(toplevel_commands);

                toplevel_commands = 0;

                interp->pop_node(old_node);

                old_node = 0;

            }

        }

    } catch(...) {

        if (0 != old_node) {

            interp->pop_node(old_node);

        }

        if (0 != toplevel_commands) {

            interp->pop_commands(toplevel_commands);

        }

        throw;

    }

    CYG_REPORT_RETVAL(result);

    return result;

}

//}}}

//{{{  check_this()                     

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

bool

CdlPackageBody::check_this(cyg_assert_class_zeal zeal) const

{

    if (CdlPackageBody_Magic != cdlpackagebody_cookie) {

        return false;

    }

    CYGDBG_MEMLEAK_CHECKTHIS();

    return CdlNodeBody::check_this(zeal)                &&

           CdlContainerBody::check_this(zeal)           &&

           CdlLoadableBody::check_this(zeal)            &&

           CdlUserVisibleBody::check_this(zeal)         &&

           CdlValuableBody::check_this(zeal)            &&

           CdlParentableBody::check_this(zeal)          &&

           CdlBuildableBody::check_this(zeal)           &&

           CdlBuildLoadableBody::check_this(zeal)       &&

           CdlDefinableBody::check_this(zeal)           &&

           CdlDefineLoadableBody::check_this(zeal);

}

//}}}

//{{{  Misc                             

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

std::string

CdlPackageBody::get_class_name() const

{

    CYG_REPORT_FUNCNAME("CdlPackage::get_class_name");

    CYG_PRECONDITION_THISC();

    CYG_REPORT_RETURN();

    return "package";

}

// BLV: there is an argument for forcing hardware packages to

// send their configuration data to a single header file

// <pkgconf/hardware.h>, so that any code can #include a

// single file to get hold of the hardware details. This

// is suppressed for now while the details are sorted out.

std::string

CdlPackageBody::get_config_header() const

{

    CYG_REPORT_FUNCNAME("CdlPackage::get_config_header");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_CLASSC(this);

    std::string result = "";

#if 0    

    if (has_property(CdlPropertyId_Hardware)) {

        result = "hardware.h";

    } else {

        result = CdlDefineLoadableBody::get_config_header();

    }

#else

    result = CdlDefineLoadableBody::get_config_header();

#endif  

    CYG_REPORT_RETURN();

    return result;

}

bool

CdlPackageBody::belongs_to_template() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackage::belongs_to_template", "result %d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = loaded_for_template;

    CYG_REPORT_RETVAL(result);

    return result;

}

bool

CdlPackageBody::belongs_to_hardware() const

{

    CYG_REPORT_FUNCNAMETYPE("CdlPackage::belongs_to_hardware", "result %d");

    CYG_REPORT_FUNCARG1XV(this);

    CYG_PRECONDITION_THISC();

    bool result = loaded_for_hardware;

    CYG_REPORT_RETVAL(result);

    return result;

}

//}}}