Annotation of parser3/src/types/pa_vstateless_class.h, revision 1.41
1.6 paf 1: /** @file
2: Parser: stateless class decls.
3:
1.22 paf 4: Copyright (c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.23 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.2 paf 6: */
7:
8: #ifndef PA_VSTATELESS_CLASS_H
9: #define PA_VSTATELESS_CLASS_H
1.27 paf 10:
1.41 ! paf 11: static const char* IDENT_VSTATELESS_CLASS_H="$Date: 2002/10/31 13:49:58 $";
1.2 paf 12:
1.13 paf 13: #include "pa_hash.h"
1.2 paf 14: #include "pa_vjunction.h"
15:
1.38 paf 16: // defines
17:
18: #define CLASS_NAME "CLASS"
19:
20: // forwards
21:
1.2 paf 22: class Temp_method;
23:
1.6 paf 24: /**
1.30 paf 25: object' class. stores
26: - base: VClass::base()
27: - methods: VStateless_class::fmethods
1.6 paf 28:
1.30 paf 29: @see Method, VStateless_object, Temp_method
1.6 paf 30: */
1.39 paf 31: class VStateless_class: public Value {
1.19 paf 32: friend class Temp_method;
1.2 paf 33: public: // Value
34:
35: const char *type() const { return "stateless_class"; }
36:
1.5 paf 37: /// VStateless_class: this
1.41 ! paf 38: /*override*/ VStateless_class *get_class() { return this; }
! 39: /// VStateless_class: fbase
! 40: /*override*/ Value *base() { return fbase; }
! 41: /*override*/ Value *get_element(const String& aname, Value& aself, bool looking_up);
1.2 paf 42:
43: public: // usage
44:
1.24 paf 45: VStateless_class(Pool& apool,
46: const String *aname=0,
1.29 paf 47: VStateless_class *abase=0) : Value(apool),
1.24 paf 48: fname(aname),
1.41 ! paf 49: fbase(abase),
1.2 paf 50: fmethods(apool) {
51: }
52:
1.24 paf 53: const String& name() const {
54: if(!fname) {
55: if(fbase)
56: return fbase->name();
57:
58: throw Exception("parser.runtime",
59: 0,
60: "getting name of nameless class");
61: }
62:
63: return *fname;
64: }
65: const char *name_cstr() const {
66: return this?name().cstr():"<unknown>";
67: }
68: void set_name(const String& aname) {
69: fname=&aname;
70: }
71:
1.26 paf 72: Method *get_method(const String& name) const {
1.2 paf 73: return static_cast<Method *>(fmethods.get(name));
74: }
75:
1.40 paf 76: void add_method(const String& name, Method& method);
77:
1.2 paf 78: void add_native_method(
79: const char *cstr_name,
1.9 paf 80: Method::Call_type call_type,
1.2 paf 81: Native_code_ptr native_code,
82: int min_numbered_params_count, int max_numbered_params_count);
83:
1.32 paf 84: VStateless_class *set_base(VStateless_class *abase) {
85: VStateless_class *result=fbase;
1.2 paf 86: // remember the guy
1.32 paf 87: fbase=abase;
88: return result;
1.2 paf 89: }
1.30 paf 90: VStateless_class *base_class() { return fbase; }
1.2 paf 91:
1.30 paf 92: bool derived_from(VStateless_class& vclass) {
1.2 paf 93: return
1.30 paf 94: fbase==&vclass ||
95: fbase && fbase->derived_from(vclass);
1.31 paf 96: }
97:
1.11 paf 98: //@{
99: /// @name just stubs, real onces defined below the hierarchy
1.18 parser 100: virtual Value *get_field(const String& ) { return 0; }
101: virtual bool replace_field(const String& , Value *) { return false; }
1.21 paf 102: //@}
103:
104: /// @returns new value for current class, used in classes/ & VClass
1.18 parser 105: virtual Value *create_new_value(Pool& ) { return 0; }
1.2 paf 106:
107: private: // Temp_method
108:
1.8 paf 109: void put_method(const String& aname, Method *amethod) {
110: fmethods.put(aname, amethod);
111: }
1.2 paf 112:
113: private:
114:
1.24 paf 115: const String *fname;
1.2 paf 116: Hash fmethods;
117:
118: protected:
119:
120: VStateless_class *fbase;
121:
122: };
123:
1.6 paf 124: /// Auto-object used for temporarily substituting/removing class method
1.2 paf 125: class Temp_method {
126: VStateless_class& fclass;
127: const String& fname;
128: Method *saved_method;
129: public:
130: Temp_method(VStateless_class& aclass, const String& aname, Method *amethod) :
131: fclass(aclass),
132: fname(aname),
133: saved_method(aclass.get_method(aname)) {
134: fclass.put_method(aname, amethod);
135: }
136: ~Temp_method() {
137: fclass.put_method(fname, saved_method);
138: }
139: };
140:
141: #endif
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