Annotation of parser3/src/types/pa_vclass.h, revision 1.5
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:
1.5 ! paf 6: $Id: pa_vclass.h,v 1.4 2001/03/12 09:31:26 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:
1.4 paf 19: class Temp_method;
20:
1.1 paf 21: class VClass : public VAliased {
1.4 paf 22: friend Temp_method;
1.1 paf 23: public: // Value
24:
25: // all: for error reporting after fail(), etc
26: const char *type() const { return "class"; }
27:
28: // object_class: (field)=STATIC.value;(STATIC)=hash;(method)=method_ref with self=object_class
29: Value *get_element(const String& aname);
30:
31: // object_class, operator_class: (field)=value - static values only
32: void put_element(const String& name, Value *value);
33:
34: // object_class, object_instance: object_class
35: VClass *get_class() { return this; }
36:
37: public: // usage
38:
39: VClass(Pool& apool) : VAliased(apool, *this),
40: fbase(0),
41: ffields(apool),
42: fmethods(apool) {
43: }
44:
1.5 ! paf 45: Method *get_method(const String& name) {
! 46: return static_cast<Method *>(fmethods.get(name));
! 47: }
! 48:
1.1 paf 49: void add_method(const String& name, Method& method) {
50: fmethods.put(name, &method);
51: }
1.3 paf 52: void add_native_method(
53: const char *cstr_name,
54: Native_code_ptr native_code,
55: int min_numbered_params_count, int max_numbered_params_count);
1.1 paf 56: // Hash& methods() { return fmethods; }
57:
58: void set_base(VClass& abase) {
59: // remember the guy
60: fbase=&abase;
61: }
62: VClass *base() { return fbase; }
63:
64: bool is_or_derived_from(VClass& vclass) {
65: return
66: this==&vclass ||
67: fbase && fbase->is_or_derived_from(vclass);
68: }
69:
70: Junction *get_junction(VAliased& self, const String& name) {
71: if(Method *method=static_cast<Method *>(fmethods.get(name)))
72: return NEW Junction(pool(), self, this, method, 0,0,0,0);
73: if(fbase)
74: return fbase->get_junction(self, name);
75: return 0;
76: }
77:
78: void set_field(const String& name, Value *value) {
1.4 paf 79: if(value) // used in ^process to temporarily remove @main
80: value->set_name(name);
1.1 paf 81: if(fbase && fbase->replace_field(name, value))
82: return;
83:
84: ffields.put(name, value);
85: }
86:
87: private:
88:
89: Value *get_field(const String& name) {
90: Value *result=static_cast<Value *>(ffields.get(name));
91: if(!result && fbase)
92: result=fbase->get_field(name);
93: return result;
94: }
95:
96: bool replace_field(const String& name, Value *value) {
97: return
98: (fbase && fbase->replace_field(name, value)) ||
99: ffields.put_replace(name, value);
100: }
1.4 paf 101:
102: private: // Temp_method
103:
104: void put_method(const String& name, Method *method) { fmethods.put(name, method); }
1.1 paf 105:
106: private:
107:
108: VClass *fbase;
109: Hash ffields;
110: Hash fmethods;
1.4 paf 111: };
112:
113: class Temp_method {
114: VClass& fclass;
115: const String& fname;
116: Method *saved_method;
117: public:
118: Temp_method(VClass& aclass, const String& aname, Method *amethod) :
119: fclass(aclass),
120: fname(aname),
121: saved_method(aclass.get_method(aname)) {
122: fclass.put_method(aname, amethod);
123: }
124: ~Temp_method() {
125: fclass.put_method(fname, saved_method);
126: }
1.1 paf 127: };
128:
129: #endif
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