Annotation of parser3/src/types/pa_varray.h, revision 1.16
1.1 moko 1: /** @file
2: Parser: @b array parser type decl.
3:
4: Copyright (c) 2001-2023 Art. Lebedev Studio (http://www.artlebedev.com)
5: Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
6: */
7:
8: #ifndef PA_VARRAY_H
9: #define PA_VARRAY_H
10:
1.16 ! moko 11: #define IDENT_PA_VARRAY_H "$Id: pa_varray.h,v 1.15 2024/10/26 01:55:46 moko Exp $"
1.1 moko 12:
13: #include "classes.h"
14: #include "pa_value.h"
15: #include "pa_array.h"
16: #include "pa_vhash.h"
17: #include "pa_vint.h"
18: #include "pa_globals.h"
19: #include "pa_symbols.h"
20:
21: // defines
22:
1.2 moko 23: #define VARRAY_TYPE "array"
1.15 moko 24: //#define DEBUG_ARRAY_USED
1.1 moko 25:
26: extern Methoded* array_class;
27:
1.2 moko 28: /// Sparse Array
29: template<typename T> class SparseArray: public Array<T> {
1.5 moko 30:
31: mutable size_t fused;
32:
1.2 moko 33: public:
1.5 moko 34: inline SparseArray(size_t initial=0) : Array<T>(initial), fused(0) {}
1.2 moko 35:
1.6 moko 36: inline SparseArray(size_t size, T* elements) : Array<T>(size), fused(size) {
1.16 ! moko 37: memcpy(this->felements, elements, size * sizeof(T));
1.6 moko 38: this->fsize=size;
39: }
40:
1.4 moko 41: inline T get(size_t index) const {
42: return index < this->count() ? this->felements[index] : NULL;
43: }
44:
1.9 moko 45: void fit(size_t index);
46:
1.5 moko 47: inline void put(size_t index, T element){
48: this->fit(index);
1.2 moko 49: this->felements[index]=element;
1.5 moko 50: if(index >= this->fsize){
51: this->fsize=index+1;
52: }
53: }
54:
1.10 moko 55: inline bool put_dont_replace(size_t index, T element){
56: this->fit(index);
57: if(this->felements[index])
58: return true;
59: this->felements[index]=element;
60: if(index >= this->fsize){
61: this->fsize=index+1;
62: }
63: return false;
64: }
65:
1.5 moko 66: inline void insert(size_t index, T element) {
67: if(index >= this->fsize){
68: this->fit(index);
69: this->felements[index]=element;
70: this->fsize=index+1;
71: } else {
72: Array<T>::insert(index, element);
73: }
74: }
75:
76: size_t used() const{
1.15 moko 77: #ifndef DEBUG_ARRAY_USED
78: if(!fused)
79: #endif
80: {
81: size_t used=0;
1.5 moko 82: for(Array_iterator<T> i(*this); i;) {
83: if(i.next())
1.15 moko 84: used++;
1.5 moko 85: }
1.15 moko 86: #ifdef DEBUG_ARRAY_USED
87: if(fused && fused!=used)
88: throw Exception(PARSER_RUNTIME, 0, "cached elements count %d differs from actual %d", fused, used);
89: #endif
90: fused=used;
1.5 moko 91: }
92: return fused;
93: }
94:
95: inline void clear(size_t index) {
1.7 moko 96: if(index < this->count()){
1.5 moko 97: this->felements[index]=NULL;
1.14 moko 98: if(index+1 == this->fsize){
1.7 moko 99: this->fsize--;
1.14 moko 100: }
1.2 moko 101: }
102: }
1.5 moko 103:
104: inline void clear() { Array<T>::clear(); }
105:
1.8 moko 106: inline void remove(size_t index) {
107: if(index < this->count()){
108: Array<T>::remove(index);
109: }
110: }
111:
1.5 moko 112: inline void invalidate(){
113: fused=0;
114: }
115:
1.11 moko 116: inline void confirm_all_used(){
117: fused=this->count();
118: }
119:
1.15 moko 120: void compact(bool compact_undef){
1.13 moko 121: T* dst=this->felements;
122: T* elements_end=dst + this->fsize;
123:
1.15 moko 124: if(compact_undef){
125: for(T* src=this->felements; src < elements_end; src++)
126: if(*src && (*src)->is_defined())
127: *dst++=*src;
128: } else {
129: for(T* src=this->felements; src < elements_end; src++)
130: if(*src)
131: *dst++=*src;
132: }
133:
134: this->fsize=dst-this->felements;
1.13 moko 135: this->fused=this->fsize;
136: }
137:
1.2 moko 138: };
139:
140:
1.1 moko 141: class VArray: public VHashBase {
142: public: // value
143:
144: override const char* type() const { return VARRAY_TYPE; }
145: override VStateless_class *get_class() { return array_class; }
146:
1.5 moko 147: /// VArray: used elements count
148: override int as_int() const { return farray.used(); }
149: override double as_double() const { return farray.used(); }
150: override bool is_defined() const { return farray.used()!=0; }
151: override bool as_bool() const { return farray.used()!=0; }
152: override Value& as_expr_result() { return *new VInt(farray.used()); }
1.1 moko 153:
154: /// VArray: virtual hash
155: override HashStringValue *get_hash() { return &hash(); }
156: override HashStringValue* get_fields() { return &hash(); }
157: override HashStringValue* get_fields_reference() { return &hash(); }
158:
159: /// VArray: json-string
160: override const String* get_json_string(Json_options& options);
161:
162: /// VArray: (key)=value
163: override Value* get_element(const String& aname) {
164: // $element first
1.4 moko 165: if(Value* result=farray.get(index(aname)))
1.1 moko 166: return result;
167:
168: // $fields -- pseudo field to make 'hash' and 'array' more like 'table'
169: if(SYMBOLS_EQ(aname,FIELDS_SYMBOL))
170: return this;
171:
172: #if !defined(FEATURE_GET_ELEMENT4CALL) || !defined(OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL)
173: // $method, CLASS, CLASS_NAME
174: if(Value* result=VStateless_object::get_element(aname))
175: return result;
176: #endif
177: return NULL;
178: }
179:
180: #ifdef FEATURE_GET_ELEMENT4CALL
181: override Value* get_element4call(const String& aname) {
182: // $method first
183: if(Value* result=VStateless_object::get_element(aname))
184: return result;
185:
186: // $element
1.12 moko 187: if(is_index(aname))
188: if(Value* result=farray.get(index(aname)))
189: return result;
1.1 moko 190:
191: return bark("%s method not found", &aname);
192: }
193: #endif
194:
195: /// VArray: (key)=value
196: override const VJunction* put_element(const String& aname, Value* avalue) {
1.5 moko 197: farray.put(index(aname), avalue);
1.14 moko 198: farray.invalidate();
1.1 moko 199: return 0;
200: }
201:
202: public: // VHashBase
203:
204: override HashStringValue& hash();
205: override void set_default(Value*) { }
206: override Value* get_default() { return 0; }
1.5 moko 207: override void add(Value* avalue) { farray+=avalue; /* only json uses it, thus no need to invalidate()*/ }
1.1 moko 208:
209: public: // usage
210:
1.14 moko 211: VArray(size_t initial=0): farray(initial) {}
212: VArray(size_t size, Value** elements): farray(size, elements) {}
1.1 moko 213:
214: ArrayValue &array() { return farray; }
215:
216: static size_t index(int aindex){
217: if(aindex<0)
1.9 moko 218: throw Exception("number.format", 0, "index out of range (negative)");
1.1 moko 219: return aindex;
220: }
221:
1.7 moko 222: static size_t index(const String::Body& aindex){ return pa_atoui(aindex.cstr()); }
223: static size_t index(const String& aindex){ return pa_atoui(aindex.cstr(), 10, &aindex); }
1.1 moko 224:
1.12 moko 225: static bool is_index(const String& aindex){
226: for(const char *pos=aindex.cstr();*pos;pos++){
227: if ((*pos < '0') || (*pos > '9'))
228: return false;
229: }
230: return true;
231: }
232:
1.5 moko 233: bool contains(size_t index){
234: return farray.get(index) != NULL;
1.1 moko 235: }
236:
237: private:
238:
239: ArrayValue farray;
240:
241: };
242:
243: #endif
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