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1.1 paf 1: /*
2: Parser
3: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.2 ! paf 4: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
1.1 paf 5:
1.2 ! paf 6: $Id: pa_vclass.h,v 1.1 2001/03/11 07:52:45 paf Exp $
1.1 paf 7: */
8:
9: #ifndef PA_VCLASS_H
10: #define PA_VCLASS_H
11:
12: #include "pa_valiased.h"
13: #include "pa_vhash.h"
14: #include "pa_vjunction.h"
15:
16: #define CLASS_NAME "CLASS"
17: #define BASE_NAME "BASE"
18:
19: class VClass : public VAliased {
20: public: // Value
21:
22: // all: for error reporting after fail(), etc
23: const char *type() const { return "class"; }
24:
25: // object_class: (field)=STATIC.value;(STATIC)=hash;(method)=method_ref with self=object_class
26: Value *get_element(const String& aname);
27:
28: // object_class, operator_class: (field)=value - static values only
29: void put_element(const String& name, Value *value);
30:
31: // object_class, object_instance: object_class
32: VClass *get_class() { return this; }
33:
34: public: // usage
35:
36: VClass(Pool& apool) : VAliased(apool, *this),
37: fbase(0),
38: ffields(apool),
39: fmethods(apool) {
40: }
41:
42: void add_method(const String& name, Method& method) {
43: fmethods.put(name, &method);
44: }
45: // Hash& methods() { return fmethods; }
46:
47: void set_base(VClass& abase) {
48: // remember the guy
49: fbase=&abase;
50: }
51: VClass *base() { return fbase; }
52:
53: bool is_or_derived_from(VClass& vclass) {
54: return
55: this==&vclass ||
56: fbase && fbase->is_or_derived_from(vclass);
57: }
58:
59: Junction *get_junction(VAliased& self, const String& name) {
60: if(Method *method=static_cast<Method *>(fmethods.get(name)))
61: return NEW Junction(pool(), self, this, method, 0,0,0,0);
62: if(fbase)
63: return fbase->get_junction(self, name);
64: return 0;
65: }
66:
67: void set_field(const String& name, Value *value) {
68: value->set_name(name);
69: if(fbase && fbase->replace_field(name, value))
70: return;
71:
72: ffields.put(name, value);
73: }
74:
75: private:
76:
77: Value *get_field(const String& name) {
78: Value *result=static_cast<Value *>(ffields.get(name));
79: if(!result && fbase)
80: result=fbase->get_field(name);
81: return result;
82: }
83:
84: bool replace_field(const String& name, Value *value) {
85: return
86: (fbase && fbase->replace_field(name, value)) ||
87: ffields.put_replace(name, value);
88: }
89:
90: private:
91:
92: VClass *fbase;
93: Hash ffields;
94: Hash fmethods;
95: };
96:
97: #endif