value.cxx

eCos1.31版

        result = int_value;
    }

    CYG_REPORT_RETVAL((int) result);
    return result;
}

bool
CdlSimpleValue::has_double_value() const
{
    CYG_REPORT_FUNCNAMETYPE("CdlSimpleValue::has_double_value", "result %d");
    CYG_REPORT_FUNCARG1XV(this);

    if (!(valid_flags & (double_valid | double_invalid))) {
        if (valid_flags & int_valid) {
            Cdl::integer_to_double(int_value, double_value);
            valid_flags |= double_valid;
        } else if (valid_flags & string_valid) {
            if (Cdl::string_to_double(value, double_value)) {
                valid_flags |= double_valid;
            } else {
                valid_flags |= double_invalid;
            }
        } else {
            CYG_FAIL("Attempt to use uninitialized SimpleValue");
        }
    }
    bool result = (valid_flags & double_valid);
    CYG_REPORT_RETVAL(result);
    return result;
}

double
CdlSimpleValue::get_double_value() const
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::get_double_value");
    CYG_REPORT_FUNCARG1XV(this);

    double result = 0.0;
    if ((valid_flags & double_valid) || has_double_value()) {
        result = double_value;
    }

    CYG_REPORT_RETURN();
    return result;
}

bool
CdlSimpleValue::get_bool_value() const
{
    CYG_REPORT_FUNCNAMETYPE("CdlSimpleValue::get_bool_value", "result %d");
    CYG_REPORT_FUNCARG1XV(this);

    bool result = false;
    if (valid_flags & int_valid) {
        if (0 != int_value) {
            result = true;
        }
    } else if (valid_flags & double_valid) {
        // Leave it to the compiler to decide what is valid
        result = double_value;
    } else if (valid_flags & string_valid) {
        // string_to_bool copes with "1", "true", and a few other cases.
        // If the current value does not match any of these then
        // true corresponds to a non-empty string.
        if (!Cdl::string_to_bool(value, result)) {
            if ("" == value) {
                result = false;
            } else {
                result = true;
            }
        }
    } else {
        // No value defined, default to false.
        result = false;
    }

    CYG_REPORT_RETVAL(result);
    return result;
}

//}}}
//{{{  Updating the value               

// ----------------------------------------------------------------------------
// Normally the assignment operators will be used for this instead.

void
CdlSimpleValue::set_value(std::string val, CdlValueFormat new_format)
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::set_value (string)");
    CYG_REPORT_FUNCARG1XV(this);

    value               = val;
    int_value           = 0;
    double_value        = 0.0;
    valid_flags         = string_valid;
    format              = new_format;
}


void
CdlSimpleValue::set_integer_value(cdl_int val, CdlValueFormat new_format)
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::set_integer_value");
    CYG_REPORT_FUNCARG2XV(this, (int) val);

    value               = "";
    int_value           = val;
    double_value        = 0.0;
    valid_flags         = int_valid;
    format              = new_format;

    CYG_REPORT_RETURN();
}


void
CdlSimpleValue::set_double_value(double val, CdlValueFormat new_format)
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::set_double_value");
    CYG_REPORT_FUNCARG1XV(this);

    value               = "";
    int_value           = 0;
    double_value        = val;
    valid_flags         = double_valid;
    format              = new_format;

    CYG_REPORT_RETURN();
}

//}}}
//{{{  Value format support             

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

CdlValueFormat
CdlSimpleValue::get_value_format() const
{
    CYG_REPORT_FUNCNAMETYPE("CdlSimpleValue::get_value_format", "result %d");
    CYG_REPORT_FUNCARG1XV(this);

    CdlValueFormat result = format;
    CYG_REPORT_RETVAL(result);
    return result;
}

void
CdlSimpleValue::set_value_format(CdlValueFormat new_format)
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::set_value_format");
    CYG_REPORT_FUNCARG2XV(this, new_format);

    format      = new_format;
    
    CYG_REPORT_RETURN();
}

void
CdlSimpleValue::set_value_format(CdlSimpleValue& other_val)
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::set_value_format (simple val)");
    CYG_REPORT_FUNCARG2XV(this, &other_val);

    format = other_val.format;

    CYG_REPORT_RETURN();
}

// This gets used for binary operators, e.g. A + B
// If A has a non-default format then that gets used.
// Otherwise B's format gets used, which may or may not be default.
//
// e.g. 0x1000 + 4 -> 0x1004
//      10 + 0x100 -> 0x10A
//      10 + 32    -> 42

void
CdlSimpleValue::set_value_format(CdlSimpleValue& val1, CdlSimpleValue& val2)
{
    CYG_REPORT_FUNCNAME("CdlSimpleValue::set_value_format");
    CYG_REPORT_FUNCARG3XV(this, &val1, &val2);

    format = (CdlValueFormat_Default != val1.format) ? val1.format : val2.format;

    CYG_REPORT_RETURN();
}

//}}}
//{{{  Comparison operators             

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

bool
CdlSimpleValue::operator==(const CdlSimpleValue& other) const
{
    CYG_REPORT_FUNCNAMETYPE("CdlSimpleValue:: operator==", "result %d");
    CYG_REPORT_FUNCARG2XV(this, &other);

    bool result = false;
    
    if (has_integer_value()) {
        if (other.has_integer_value()) {
            cdl_int val1 = get_integer_value();
            cdl_int val2 = other.get_integer_value();
            result = (val1 == val2);
        }
    } else if (has_double_value()) {
        if (other.has_double_value()) {
            double val1 = get_double_value();
            double val2 = other.get_double_value();
            result = (val1 == val2);
        }
    } else {
        std::string val1 = get_value();
        std::string val2 = other.get_value();
        result = (val1 == val2);
    }
    
    CYG_REPORT_RETVAL(result);
    return result;
}

bool
CdlSimpleValue::operator!=(const CdlSimpleValue& other) const
{
    CYG_REPORT_FUNCNAMETYPE("CdlSimpleValue:: operator!=", "result %d");
    CYG_REPORT_FUNCARG2XV(this, &other);

    bool result = true;
    if (has_integer_value()) {
        if (other.has_integer_value()) {
            cdl_int val1 = get_integer_value();
            cdl_int val2 = other.get_integer_value();
            result = (val1 != val2);
        }
    } else if (has_double_value()) {
        if (other.has_double_value()) {
            double val1 = get_double_value();
            double val2 = other.get_double_value();
            result = (val1 != val2);
        }
    } else {
        std::string val1 = get_value();
        std::string val2 = other.get_value();
        result = (val1 != val2);
    }


    CYG_REPORT_RETVAL(result);
    return result;
}

//}}}

//}}}
//{{{  CdlValue class                   

// ----------------------------------------------------------------------------
// This should really be a class static constant, but VC++ does not implement
// that part of the language. A constant here avoids the need for lots of
// occurrences of 4 throughout the value-related routines.

static const int CdlValue_number_of_sources = 4;

//{{{  Constructors                             

// ----------------------------------------------------------------------------
// The default flavor depends on the type of entity being created. For
// example CDL options are boolean by default, but packages are booldata.
// The intelligence to do the right thing lives in set_flavor().

CdlValue::CdlValue(CdlValueFlavor flavor_arg)
{
    CYG_REPORT_FUNCNAME("CdlValue:: constructor");
    CYG_REPORT_FUNCARG1XV(this);

    current_source = CdlValueSource_Default;
    source_valid[CdlValueSource_Default]        = true;
    source_valid[CdlValueSource_Inferred]       = false;
    source_valid[CdlValueSource_Wizard]         = false;
    source_valid[CdlValueSource_User]           = false;
    enabled[CdlValueSource_Default]             = false;
    enabled[CdlValueSource_Inferred]            = false;
    enabled[CdlValueSource_Wizard]              = false;
    enabled[CdlValueSource_User]                = false;

    // The SimpleValues will initialize themselves.
    
    cdlvalue_cookie         = CdlValue_Magic;
    CYGDBG_MEMLEAK_CONSTRUCTOR();
    set_flavor(flavor_arg);
        
    CYG_POSTCONDITION_THISC();
    CYG_REPORT_RETURN();
}

// ----------------------------------------------------------------------------
// Copy constructor. This is not really required, a default
// member-wise copy would be fine and more efficient, but it would
// lose tracing and assertion.

CdlValue::CdlValue(const CdlValue& original)
{
    CYG_REPORT_FUNCNAME("CdlValue:: copy constructor");
    CYG_REPORT_FUNCARG2XV(this, &original);
    CYG_INVARIANT_CLASSOC(CdlValue, original);

    flavor              = original.flavor;
    current_source      = original.current_source;
    for (int i = 0; i < CdlValue_number_of_sources; i++) {
        source_valid[i] = original.source_valid[i];
        enabled[i]      = original.enabled[i];
        values[i]       = original.values[i];
    }

    cdlvalue_cookie = CdlValue_Magic;
    CYGDBG_MEMLEAK_CONSTRUCTOR();
    
    CYG_POSTCONDITION_THISC();
    CYG_REPORT_RETURN();
}

// ----------------------------------------------------------------------------
// Assignment operator. Again this is not required, the default would be
// fine and more efficient, but tracing and assertions are good things.

CdlValue& CdlValue::operator=(const CdlValue& original)
{
    CYG_REPORT_FUNCNAME("CdlValue:: assignment operator");
    CYG_REPORT_FUNCARG2XV(this, &original);
    CYG_INVARIANT_CLASSOC(CdlValue, original);

    if (this != &original) {
        flavor          = original.flavor;
        current_source  = original.current_source;
        for (int i = 0; i < CdlValue_number_of_sources; i++) {
            source_valid[i]     = original.source_valid[i];
            enabled[i]          = original.enabled[i];
            values[i]           = original.values[i];
        }
    }

    cdlvalue_cookie = CdlValue_Magic;
    CYG_POSTCONDITION_THISC();
    CYG_REPORT_RETURN();
    return *this;
}

//}}}
//{{{  Destructor                               

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

CdlValue::~CdlValue()
{
    CYG_REPORT_FUNCNAME("CdlValue:: destructor");
    CYG_REPORT_FUNCARG1XV(this);
    CYG_PRECONDITION_THISC();

    cdlvalue_cookie     = CdlValue_Invalid;
    flavor              = CdlValueFlavor_Invalid;
    current_source      = CdlValueSource_Invalid;
    for (int i = 0; i < CdlValue_number_of_sources; i++) {
        source_valid[i]         = false;
        enabled[i]              = false;
        // The CdlSimpleValue array will take care of itself.
    }
    CYGDBG_MEMLEAK_DESTRUCTOR();

    CYG_REPORT_RETURN();
}

//}}}
//{{{  check_this()                             

// ----------------------------------------------------------------------------
bool
CdlValue::check_this(cyg_assert_class_zeal zeal) const
{
    if (CdlValue_Magic != cdlvalue_cookie) {
        return false;
    }
    CYGDBG_MEMLEAK_CHECKTHIS();

    if (!source_valid[CdlValueSource_Default]) {
        return false;
    }

    if ((CdlValueFlavor_None == flavor) || (CdlValueFlavor_Data == flavor)) {
        for (int i = 0; i < CdlValue_number_of_sources; i++) {
            if (!enabled[i]) {
                return false;
            }
        }
    }
    for (int i = 0; i < CdlValue_number_of_sources; i++) {
        if (source_valid[i]) {
            if (!values[i].check_this(zeal)) {
                return false;
            }
        }
    }
    
    return true;
}

//}}}
//{{{  Flavor manipulation                      

// ----------------------------------------------------------------------------
// Get hold of the current flavor.
CdlValueFlavor
CdlValue::get_flavor(void) const
{
    CYG_REPORT_FUNCNAMETYPE("CdlValue::get_flavor", "result %d");
    CYG_REPORT_FUNCARG1XV(this);
    CYG_PRECONDITION_THISC();

    CdlValueFlavor result = flavor;
    CYG_REPORT_RETVAL(result);
    return result;