Annotation of parser3/src/types/pa_vtable.h, revision 1.17
1.6 paf 1: /** @file
1.15 paf 2: Parser: @b table parser class decl.
1.6 paf 3:
1.1 paf 4: Copyright (c) 2001 ArtLebedev Group (http://www.artlebedev.com)
1.6 paf 5:
1.1 paf 6: Author: Alexander Petrosyan <paf@design.ru> (http://design.ru/paf)
7:
1.17 ! paf 8: $Id: pa_vtable.h,v 1.16 2001/04/28 08:44:17 paf Exp $
1.1 paf 9: */
10:
11: #ifndef PA_VTABLE_H
12: #define PA_VTABLE_H
13:
14: #include "pa_vstateless_object.h"
15: #include "pa_table.h"
16: #include "pa_vunknown.h"
17:
1.16 paf 18: extern Methoded *table_class;
19:
1.6 paf 20: /// value of type 'table'. implemented with Table
1.1 paf 21: class VTable : public VStateless_object {
22: public: // Value
23:
1.6 paf 24: /// all: for error reporting after fail(), etc
1.1 paf 25: const char *type() const { return "table"; }
1.6 paf 26: /// extract VTable
1.10 paf 27: Table *get_table() { return ftable; }
1.17 ! paf 28: /// VTable: column/method
1.1 paf 29: Value *get_element(const String& name) {
1.17 ! paf 30: // columns
! 31: if(ftable)
! 32: if(const String *string=ftable->item(name))
! 33: return NEW VString(*string);
! 34:
1.3 paf 35: // methods
1.2 paf 36: if(Value *result=VStateless_object::get_element(name))
37: return result;
1.1 paf 38:
39: return NEW VUnknown(pool());
40: }
1.7 paf 41:
1.11 paf 42: public:
43:
44: bool last_locate_was_successful;
45:
1.7 paf 46: protected: // VAliased
47:
1.9 paf 48: /// disable .CLASS element. @see VAliased::get_element
1.13 paf 49: bool hide_class() { return true; }
1.1 paf 50:
51: public: // usage
52:
1.12 paf 53: VTable(Pool& apool, Table* atable=0) : VStateless_object(apool, *table_class),
1.14 paf 54: ftable(atable), locked(false),
1.11 paf 55: last_locate_was_successful(false) {
1.1 paf 56: }
1.16 paf 57: void lock() {
58: check_lock();
59: locked=true;
60: }
1.14 paf 61: void unlock() { locked=false; }
62: void set_table(Table& avalue) {
1.16 paf 63: check_lock();
1.14 paf 64: ftable=&avalue;
65: }
1.1 paf 66: Table& table() {
1.4 paf 67: if(!ftable)
1.1 paf 68: bark("getting unset vtable value");
69:
1.4 paf 70: return *ftable;
1.1 paf 71: }
72:
73: private:
74:
1.4 paf 75: Table *ftable;
1.14 paf 76: bool locked;
1.16 paf 77:
78: private:
79:
80: void check_lock() {
81: if(locked)
82: bark("is locked");
83: }
1.1 paf 84:
85: };
86:
87: #endif
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