Annotation of parser3/src/types/pa_vstateless_class.h, revision 1.59
1.6 paf 1: /** @file
2: Parser: stateless class decls.
3:
1.53 paf 4: Copyright (c) 2001-2005 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:
1.59 ! misha 11: static const char * const IDENT_VSTATELESS_CLASS_H="$Date: 2008-06-05 13:26:57 $";
1.43 paf 12:
13: // include
1.2 paf 14:
1.45 paf 15: #include "pa_pool.h"
1.13 paf 16: #include "pa_hash.h"
1.2 paf 17: #include "pa_vjunction.h"
1.43 paf 18: #include "pa_method.h"
1.49 paf 19: #include "pa_vproperty.h"
1.2 paf 20:
1.38 paf 21: // defines
22:
23: #define CLASS_NAME "CLASS"
1.54 misha 24: #define CLASS_NAMETEXT "CLASS_NAME"
1.38 paf 25:
26: // forwards
27:
1.43 paf 28: class VStateless_class;
1.59 ! misha 29: typedef Array<VStateless_class*> ArrayClass;
1.43 paf 30:
1.2 paf 31: class Temp_method;
32:
1.6 paf 33: /**
1.30 paf 34: object' class. stores
35: - base: VClass::base()
36: - methods: VStateless_class::fmethods
1.6 paf 37:
1.30 paf 38: @see Method, VStateless_object, Temp_method
1.6 paf 39: */
1.39 paf 40: class VStateless_class: public Value {
1.19 paf 41: friend class Temp_method;
1.43 paf 42:
43: const String* fname;
44: mutable const char* fname_cstr;
1.44 paf 45: Hash<const String::Body, Method*> fmethods;
1.43 paf 46:
47: bool flocked;
1.57 misha 48: bool fall_vars_local;
1.43 paf 49:
50: protected:
51:
52: VStateless_class* fbase;
1.58 misha 53: Method* fdefault_getter;
1.43 paf 54:
1.2 paf 55: public: // Value
56:
1.43 paf 57: const char* type() const { return "stateless_class"; }
1.2 paf 58:
1.5 paf 59: /// VStateless_class: this
1.43 paf 60: override VStateless_class *get_class() { return this; }
1.41 paf 61: /// VStateless_class: fbase
1.43 paf 62: override Value* base() { return fbase; }
1.58 misha 63: override Value* get_element(const String& aname, Value& aself, bool alooking_up);
1.55 misha 64: override Value& as_expr_result(bool /*return_string_as_is=false*/);
1.58 misha 65: override Value* get_default_getter(Value& aself, const String& aname);
66: override void set_default_getter(Method* amethod);
1.2 paf 67:
68: public: // usage
69:
1.43 paf 70: VStateless_class(
71: const String* aname=0,
72: VStateless_class* abase=0):
1.24 paf 73: fname(aname),
1.43 paf 74: flocked(false),
1.57 misha 75: fbase(abase),
1.58 misha 76: fall_vars_local(false),
77: fdefault_getter(0) {
1.2 paf 78: }
79:
1.43 paf 80: void lock() { flocked=true; }
81:
1.24 paf 82: const String& name() const {
83: if(!fname) {
84: if(fbase)
85: return fbase->name();
86:
1.56 misha 87: throw Exception(PARSER_RUNTIME,
1.24 paf 88: 0,
89: "getting name of nameless class");
90: }
91:
92: return *fname;
93: }
1.43 paf 94: const char* name_cstr() const{
95: if(this) {
96: if(!fname_cstr) // remembering last calculated, and can't reassign 'fname_cstr'!
97: fname_cstr=name().cstr();
98: return fname_cstr;
99: } else
100: return "<unknown>";
1.24 paf 101: }
102: void set_name(const String& aname) {
103: fname=&aname;
104: }
105:
1.43 paf 106: Method* get_method(const String& aname) const {
107: return fmethods.get(aname);
1.2 paf 108: }
109:
1.57 misha 110: void all_vars_local(){
111: fall_vars_local=true;
112: }
113:
114: bool is_vars_local(){
115: return fall_vars_local;
116: }
117:
1.51 paf 118: /// virtual for VClass to override to pre-cache property accessors into fields
119: virtual void add_method(const String& name, Method& method);
1.40 paf 120:
1.2 paf 121: void add_native_method(
1.43 paf 122: const char* cstr_name,
1.9 paf 123: Method::Call_type call_type,
1.43 paf 124: NativeCodePtr native_code,
1.2 paf 125: int min_numbered_params_count, int max_numbered_params_count);
126:
1.43 paf 127: void set_base(VStateless_class* abase) {
1.2 paf 128: // remember the guy
1.32 paf 129: fbase=abase;
1.2 paf 130: }
1.43 paf 131: VStateless_class* base_class() { return fbase; }
1.2 paf 132:
1.30 paf 133: bool derived_from(VStateless_class& vclass) {
1.2 paf 134: return
1.30 paf 135: fbase==&vclass ||
136: fbase && fbase->derived_from(vclass);
1.31 paf 137: }
138:
1.11 paf 139: //@{
140: /// @name just stubs, real onces defined below the hierarchy
1.43 paf 141: virtual Value* get_field(const String&) { return 0; }
142: virtual bool replace_field(const String&, Value*) { return false; }
1.21 paf 143: //@}
144:
145: /// @returns new value for current class, used in classes/ & VClass
1.52 paf 146: virtual Value* create_new_value(Pool&, HashStringValue& /*afields*/) { return 0; }
1.50 paf 147:
148: protected:
149:
150: void fill_properties(HashStringValue& acache);
1.2 paf 151:
1.49 paf 152: private:
1.2 paf 153:
1.49 paf 154: void put_method(const String& aname, Method* amethod);
1.2 paf 155: };
156:
1.6 paf 157: /// Auto-object used for temporarily substituting/removing class method
1.2 paf 158: class Temp_method {
159: VStateless_class& fclass;
160: const String& fname;
1.43 paf 161: Method* saved_method;
1.2 paf 162: public:
1.43 paf 163: Temp_method(VStateless_class& aclass, const String& aname, Method* amethod) :
1.2 paf 164: fclass(aclass),
165: fname(aname),
166: saved_method(aclass.get_method(aname)) {
167: fclass.put_method(aname, amethod);
168: }
169: ~Temp_method() {
170: fclass.put_method(fname, saved_method);
171: }
172: };
173:
174: #endif
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