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Annotation of parser3/src/types/pa_vclass.C, revision 1.22

1.7       paf         1: /**    @file
                      2:        Parser: @b class parser class impl.
1.1       paf         3: 
1.20      paf         4:        Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.7       paf         5:        Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1       paf         6: */
                      7: 
1.22    ! paf         8: static const char * const IDENT_VCLASS_C="$Date: 2005/07/15 06:16:42 $";
1.7       paf         9: 
1.1       paf        10: #include "pa_vclass.h"
                     11: 
1.22    ! paf        12: /// preparing property accessors to fields
        !            13: VClass::VClass()
        !            14: {
        !            15:        fill_properties(ffields);
        !            16: }
        !            17: 
1.17      paf        18: Value* VClass::as(const char* atype, bool looking_up) {
                     19:        if(Value* result=Value::as(atype, looking_up))
1.12      paf        20:                return result;
1.11      paf        21:        else
1.12      paf        22:                return fbase?fbase->as(atype, looking_up):0;
1.11      paf        23: }
                     24: 
1.22    ! paf        25: /// VClass: $CLASS, (field/property)=STATIC value;(method)=method_ref with self=object_class
1.17      paf        26: Value* VClass::get_element(const String& aname, Value& aself, bool looking_up) {
1.22    ! paf        27:        // simple things first: $field=static field/property
        !            28:        if(Value* result=ffields.get(aname)) {
        !            29:                if(Property* prop=result->get_property()) // it is property?
        !            30:                {
        !            31:                        Method* method=prop->getter;
        !            32:                        if(!method)
        !            33:                                throw Exception("parser.runtime",
        !            34:                                        &aname,
        !            35:                                        "this property has no getter method (get_%s)", aname.cstr());
1.21      paf        36: 
1.22    ! paf        37:                        return new VJunction(new Junction(aself, method, true /*is_getter*/));
        !            38:                }
1.21      paf        39:                return result;
                     40:        }
                     41: 
1.14      paf        42:        // $CLASS, $method, or other base element
1.17      paf        43:        if(Value* result=VStateless_class::get_element(aname, aself, looking_up))
1.22    ! paf        44:                return result; // TODO: this can be SIGNIFICANTLY sped up by caching in ffields! [THOUGH decide about different aself] // what REALLY would speed up things is to join storage of properties/methods/fields of all vobject parents into last descenant [sort of vmt + all fields as in other langs]
1.7       paf        45: 
                     46:        return 0;
                     47: }
                     48: 
                     49: /// VClass: (field)=value - static values only
1.21      paf        50: const Method* VClass::put_element(const String& aname, Value* avalue, bool replace) {
1.7       paf        51:        try {
                     52:                if(fbase && fbase->put_element(aname, avalue, true))
1.21      paf        53:                        return PUT_ELEMENT_REPLACED_ELEMENT; // replaced in base
1.10      paf        54:        } catch(Exception) {  /* allow override parent variables, useful for form descendants */ }
1.7       paf        55: 
                     56:        if(replace)
1.21      paf        57:                return ffields.put_replace(aname, avalue)? PUT_ELEMENT_REPLACED_ELEMENT: 0;
1.7       paf        58:        else {
                     59:                ffields.put(aname, avalue);
1.21      paf        60:                return 0;
1.7       paf        61:        }
                     62: }
                     63: 
                     64: /// @returns object of this class
1.18      paf        65: Value* VClass::create_new_value(Pool& apool) { 
                     66:        return new VObject(apool, *this);
1.1       paf        67: }