Annotation of parser3/src/types/pa_vstateless_class.h, revision 1.57
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:
1.57 ! misha 11: static const char * const IDENT_VSTATELESS_CLASS_H="$Date: 2007/04/23 10:30:50 $";
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;
29:
1.2 paf 30: class Temp_method;
31:
1.6 paf 32: /**
1.30 paf 33: object' class. stores
34: - base: VClass::base()
35: - methods: VStateless_class::fmethods
1.6 paf 36:
1.30 paf 37: @see Method, VStateless_object, Temp_method
1.6 paf 38: */
1.39 paf 39: class VStateless_class: public Value {
1.19 paf 40: friend class Temp_method;
1.43 paf 41:
42: const String* fname;
43: mutable const char* fname_cstr;
1.44 paf 44: Hash<const String::Body, Method*> fmethods;
1.43 paf 45:
46: bool flocked;
1.57 ! misha 47: bool fall_vars_local;
1.43 paf 48:
49: protected:
50:
51: VStateless_class* fbase;
52:
1.2 paf 53: public: // Value
54:
1.43 paf 55: const char* type() const { return "stateless_class"; }
1.2 paf 56:
1.5 paf 57: /// VStateless_class: this
1.43 paf 58: override VStateless_class *get_class() { return this; }
1.41 paf 59: /// VStateless_class: fbase
1.43 paf 60: override Value* base() { return fbase; }
61: override Value* get_element(const String& aname, Value& aself, bool looking_up);
1.55 misha 62: override Value& as_expr_result(bool /*return_string_as_is=false*/);
1.2 paf 63:
64: public: // usage
65:
1.43 paf 66: VStateless_class(
67: const String* aname=0,
68: VStateless_class* abase=0):
1.24 paf 69: fname(aname),
1.43 paf 70: flocked(false),
1.57 ! misha 71: fbase(abase),
! 72: fall_vars_local(false) {
1.2 paf 73: }
74:
1.43 paf 75: void lock() { flocked=true; }
76:
1.24 paf 77: const String& name() const {
78: if(!fname) {
79: if(fbase)
80: return fbase->name();
81:
1.56 misha 82: throw Exception(PARSER_RUNTIME,
1.24 paf 83: 0,
84: "getting name of nameless class");
85: }
86:
87: return *fname;
88: }
1.43 paf 89: const char* name_cstr() const{
90: if(this) {
91: if(!fname_cstr) // remembering last calculated, and can't reassign 'fname_cstr'!
92: fname_cstr=name().cstr();
93: return fname_cstr;
94: } else
95: return "<unknown>";
1.24 paf 96: }
97: void set_name(const String& aname) {
98: fname=&aname;
99: }
100:
1.43 paf 101: Method* get_method(const String& aname) const {
102: return fmethods.get(aname);
1.2 paf 103: }
104:
1.57 ! misha 105: void all_vars_local(){
! 106: fall_vars_local=true;
! 107: }
! 108:
! 109: bool is_vars_local(){
! 110: return fall_vars_local;
! 111: }
! 112:
1.51 paf 113: /// virtual for VClass to override to pre-cache property accessors into fields
114: virtual void add_method(const String& name, Method& method);
1.40 paf 115:
1.2 paf 116: void add_native_method(
1.43 paf 117: const char* cstr_name,
1.9 paf 118: Method::Call_type call_type,
1.43 paf 119: NativeCodePtr native_code,
1.2 paf 120: int min_numbered_params_count, int max_numbered_params_count);
121:
1.43 paf 122: void set_base(VStateless_class* abase) {
1.2 paf 123: // remember the guy
1.32 paf 124: fbase=abase;
1.2 paf 125: }
1.43 paf 126: VStateless_class* base_class() { return fbase; }
1.2 paf 127:
1.30 paf 128: bool derived_from(VStateless_class& vclass) {
1.2 paf 129: return
1.30 paf 130: fbase==&vclass ||
131: fbase && fbase->derived_from(vclass);
1.31 paf 132: }
133:
1.11 paf 134: //@{
135: /// @name just stubs, real onces defined below the hierarchy
1.43 paf 136: virtual Value* get_field(const String&) { return 0; }
137: virtual bool replace_field(const String&, Value*) { return false; }
1.21 paf 138: //@}
139:
140: /// @returns new value for current class, used in classes/ & VClass
1.52 paf 141: virtual Value* create_new_value(Pool&, HashStringValue& /*afields*/) { return 0; }
1.50 paf 142:
143: protected:
144:
145: void fill_properties(HashStringValue& acache);
1.2 paf 146:
1.49 paf 147: private:
1.2 paf 148:
1.49 paf 149: void put_method(const String& aname, Method* amethod);
1.2 paf 150: };
151:
1.6 paf 152: /// Auto-object used for temporarily substituting/removing class method
1.2 paf 153: class Temp_method {
154: VStateless_class& fclass;
155: const String& fname;
1.43 paf 156: Method* saved_method;
1.2 paf 157: public:
1.43 paf 158: Temp_method(VStateless_class& aclass, const String& aname, Method* amethod) :
1.2 paf 159: fclass(aclass),
160: fname(aname),
161: saved_method(aclass.get_method(aname)) {
162: fclass.put_method(aname, amethod);
163: }
164: ~Temp_method() {
165: fclass.put_method(fname, saved_method);
166: }
167: };
168:
169: #endif
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