Annotation of parser3/src/types/pa_vobject.C, revision 1.19
1.1 paf 1: /** @file
2: Parser: @b object class impl.
3:
1.16 paf 4: Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
1.1 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
6: */
7:
8: #include "pa_vobject.h"
1.7 paf 9: #include "pa_vhash.h"
10: #include "pa_vtable.h"
1.1 paf 11:
1.19 ! paf 12: static const char * const IDENT_VOBJECT_C="$Date: 2005/07/26 12:43:05 $";
1.5 paf 13:
1.13 paf 14: Value* VObject::as(const char* atype, bool looking_up) {
1.5 paf 15: if(!looking_up)
1.10 paf 16: return get_last_derived().as(atype, true/*the only user*/); // figure out from last_derivate upwards
1.5 paf 17:
18: // is it me?
1.6 paf 19: if(Value *result=Value::as(atype, false))
20: return result;
1.5 paf 21:
22: // is it my base?
23: if(fbase) {
1.6 paf 24: if(Value *result=fbase->as(atype, true))
25: return result;
1.5 paf 26: }
27:
28: // neither
1.6 paf 29: return 0;
1.5 paf 30: }
1.1 paf 31:
1.7 paf 32: /// VObject: from possible parent, if any
33: bool VObject::is_defined() const {
34: return fbase?fbase->is_defined():Value::is_defined();
35: }
36: /// VObject: from possible parent, if any
1.13 paf 37: Value& VObject::as_expr_result(bool) {
1.7 paf 38: return fbase?fbase->as_expr_result():Value::as_expr_result();
39: }
40: /// VObject: from possible parent, if any
41: int VObject::as_int() const {
42: return fbase?fbase->as_int():Value::as_int();
43: }
44: /// VObject: from possible parent, if any
45: double VObject::as_double() {
46: return fbase?fbase->as_double():Value::as_double();
47: }
48: /// VObject: from possible parent, if any
49: bool VObject::as_bool() const {
50: return fbase?fbase->as_bool():Value::as_bool();
51: }
52: /// VObject: from possible parent, if any
1.13 paf 53: VFile* VObject::as_vfile(String::Language lang, const Request_charsets *charsets) {
54: return fbase?fbase->as_vfile(lang, charsets):
55: Value::as_vfile(lang, charsets);
1.7 paf 56: }
57:
58: /// VObject: from possible parent, if any
1.13 paf 59: HashStringValue* VObject::get_hash() {
60: if(Value* vhash=get_last_derived().as(VHASH_TYPE, false))
61: return vhash->get_hash();
1.7 paf 62:
63: return 0;
64: }
65: /// VObject: from possible 'table' parent
66: Table *VObject::get_table() {
1.10 paf 67: if(Value *vtable=get_last_derived().as(VTABLE_TYPE, false))
1.7 paf 68: return vtable->get_table();
69:
70: return 0;
71: }
1.1 paf 72:
73: /// VObject: (field)=value;(CLASS)=vclass;(method)=method_ref
1.14 paf 74: Value* VObject::get_element(const String& aname, Value&, bool looking_up) {
1.8 paf 75: // simple things first: $field=ffields.field
1.13 paf 76: if(Value* result=ffields.get(aname))
1.8 paf 77: return result;
78:
1.1 paf 79: // gets element from last_derivate upwards
1.5 paf 80: if(!looking_up) {
1.1 paf 81: // $CLASS
82: if(aname==CLASS_NAME)
83: return get_class();
84:
1.10 paf 85: // $virtual_method
86: VObject& last_derived=get_last_derived();
1.13 paf 87: if(Value* result=last_derived.stateless_object__get_element(aname, last_derived))
1.1 paf 88: return result;
89: }
90:
1.10 paf 91: // up the tree for other $virtual_field try...
1.1 paf 92: if(fbase)
1.13 paf 93: if(Value* result=fbase->get_element(aname, *fbase, true))
1.1 paf 94: return result;
95:
96: return 0;
97: }
1.13 paf 98: Value* VObject::stateless_object__get_element(const String& aname, Value& aself) {
1.10 paf 99: return VStateless_object::get_element(aname, aself, false);
100: }
1.1 paf 101:
1.19 ! paf 102: // from pa_vclass.C
! 103: const Method* pa_prevent_overwrite_property(Value* value);
! 104:
! 105: /// VObject: (field/property)=value
1.18 paf 106: const Junction* VObject::put_element(const String& aname, Value* avalue, bool replace) {
1.19 ! paf 107: if(fbase)
! 108: if(const Junction* result=fbase->put_element(aname, avalue, true))
! 109: return result; // replaced in base dynamic(NOT static!) fields
1.1 paf 110:
1.19 ! paf 111: if(replace) {
! 112: // we're in some parent, we should NOT try to insert there, only IF that field/property existed there
! 113: if(const Method* method=ffields.maybe_put_replaced<const Method*>(aname, avalue, pa_prevent_overwrite_property) ) {
! 114: if(method==reinterpret_cast<const Method*>(1)) // existed, but not were not property?
! 115: return PUT_ELEMENT_REPLACED_ELEMENT;
! 116: return new Junction(*this, method, true /*is_setter*/);
! 117: }
! 118:
! 119: return 0; // NOT replaced/putted anything to parent [there were NO such field/property for us to fill]
! 120: } else {
! 121: if(const Junction* result=VStateless_object::put_element(aname, avalue, true))
! 122: return result; // replaced in base statics fields
1.11 paf 123:
1.2 paf 124: ffields.put(aname, avalue);
1.19 ! paf 125: return 0; // were simply added [not existed before]
1.2 paf 126: }
1.1 paf 127: }
128:
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