Annotation of parser3/src/types/pa_varray.h, revision 1.18
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:
1.18 ! moko 11: #define IDENT_PA_VARRAY_H "$Id: pa_varray.h,v 1.17 2024/10/26 18:53:37 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:
1.17 moko 41: // note: 'append' and 'operator+=' are used directly from Array.
42:
43: // not virtual, thus Array::append does not use it, but that's OK.
44: void fit(size_t index);
45:
1.4 moko 46: inline T get(size_t index) const {
1.18 ! moko 47: return index < this->fsize ? this->felements[index] : NULL;
1.4 moko 48: }
49:
1.5 moko 50: inline void put(size_t index, T element){
51: this->fit(index);
1.2 moko 52: this->felements[index]=element;
1.5 moko 53: if(index >= this->fsize){
54: this->fsize=index+1;
55: }
56: }
57:
1.10 moko 58: inline bool put_dont_replace(size_t index, T element){
59: this->fit(index);
60: if(this->felements[index])
61: return true;
62: this->felements[index]=element;
63: if(index >= this->fsize){
64: this->fsize=index+1;
65: }
66: return false;
67: }
68:
1.5 moko 69: inline void insert(size_t index, T element) {
70: if(index >= this->fsize){
71: this->fit(index);
72: this->felements[index]=element;
73: this->fsize=index+1;
74: } else {
75: Array<T>::insert(index, element);
76: }
77: }
78:
79: size_t used() const{
1.15 moko 80: #ifndef DEBUG_ARRAY_USED
81: if(!fused)
82: #endif
83: {
84: size_t used=0;
1.5 moko 85: for(Array_iterator<T> i(*this); i;) {
86: if(i.next())
1.15 moko 87: used++;
1.5 moko 88: }
1.15 moko 89: #ifdef DEBUG_ARRAY_USED
90: if(fused && fused!=used)
91: throw Exception(PARSER_RUNTIME, 0, "cached elements count %d differs from actual %d", fused, used);
92: #endif
93: fused=used;
1.5 moko 94: }
95: return fused;
96: }
97:
98: inline void clear(size_t index) {
1.18 ! moko 99: if(index < this->fsize){
1.5 moko 100: this->felements[index]=NULL;
1.18 ! moko 101: if(index == this->fsize-1){
1.7 moko 102: this->fsize--;
1.18 ! moko 103: locate_last_used();
1.14 moko 104: }
1.2 moko 105: }
106: }
1.5 moko 107:
108: inline void clear() { Array<T>::clear(); }
109:
1.8 moko 110: inline void remove(size_t index) {
1.18 ! moko 111: if(index < this->fsize){
1.8 moko 112: Array<T>::remove(index);
1.18 ! moko 113: if(index==this->fsize)
! 114: locate_last_used();
1.8 moko 115: }
116: }
117:
1.18 ! moko 118: inline T pop() {
! 119: if(this->fsize){
! 120: T result=this->felements[this->fsize-1];
! 121: this->fsize--;
! 122: locate_last_used();
! 123: return result;
! 124: }
! 125: return NULL;
! 126: }
! 127:
1.5 moko 128: inline void invalidate(){
129: fused=0;
130: }
131:
1.18 ! moko 132: inline void locate_last_used(){
! 133: for(;this->fsize>0 && !this->felements[this->fsize-1];this->fsize--);
! 134: }
! 135:
1.11 moko 136: inline void confirm_all_used(){
1.18 ! moko 137: fused=this->fsize;
1.11 moko 138: }
139:
1.15 moko 140: void compact(bool compact_undef){
1.13 moko 141: T* dst=this->felements;
142: T* elements_end=dst + this->fsize;
143:
1.15 moko 144: if(compact_undef){
145: for(T* src=this->felements; src < elements_end; src++)
146: if(*src && (*src)->is_defined())
147: *dst++=*src;
148: } else {
149: for(T* src=this->felements; src < elements_end; src++)
150: if(*src)
151: *dst++=*src;
152: }
153:
154: this->fsize=dst-this->felements;
1.13 moko 155: }
156:
1.2 moko 157: };
158:
159:
1.1 moko 160: class VArray: public VHashBase {
161: public: // value
162:
163: override const char* type() const { return VARRAY_TYPE; }
164: override VStateless_class *get_class() { return array_class; }
165:
1.5 moko 166: /// VArray: used elements count
167: override int as_int() const { return farray.used(); }
168: override double as_double() const { return farray.used(); }
169: override bool is_defined() const { return farray.used()!=0; }
170: override bool as_bool() const { return farray.used()!=0; }
171: override Value& as_expr_result() { return *new VInt(farray.used()); }
1.1 moko 172:
173: /// VArray: virtual hash
174: override HashStringValue *get_hash() { return &hash(); }
175: override HashStringValue* get_fields() { return &hash(); }
176: override HashStringValue* get_fields_reference() { return &hash(); }
177:
178: /// VArray: json-string
179: override const String* get_json_string(Json_options& options);
180:
181: /// VArray: (key)=value
182: override Value* get_element(const String& aname) {
183: // $element first
1.4 moko 184: if(Value* result=farray.get(index(aname)))
1.1 moko 185: return result;
186:
187: // $fields -- pseudo field to make 'hash' and 'array' more like 'table'
188: if(SYMBOLS_EQ(aname,FIELDS_SYMBOL))
189: return this;
190:
191: #if !defined(FEATURE_GET_ELEMENT4CALL) || !defined(OPTIMIZE_BYTECODE_GET_ELEMENT__SPECIAL)
192: // $method, CLASS, CLASS_NAME
193: if(Value* result=VStateless_object::get_element(aname))
194: return result;
195: #endif
196: return NULL;
197: }
198:
199: #ifdef FEATURE_GET_ELEMENT4CALL
200: override Value* get_element4call(const String& aname) {
201: // $method first
202: if(Value* result=VStateless_object::get_element(aname))
203: return result;
204:
205: // $element
1.12 moko 206: if(is_index(aname))
207: if(Value* result=farray.get(index(aname)))
208: return result;
1.1 moko 209:
210: return bark("%s method not found", &aname);
211: }
212: #endif
213:
214: /// VArray: (key)=value
215: override const VJunction* put_element(const String& aname, Value* avalue) {
1.5 moko 216: farray.put(index(aname), avalue);
1.14 moko 217: farray.invalidate();
1.1 moko 218: return 0;
219: }
220:
221: public: // VHashBase
222:
223: override HashStringValue& hash();
224: override void set_default(Value*) { }
225: override Value* get_default() { return 0; }
1.5 moko 226: override void add(Value* avalue) { farray+=avalue; /* only json uses it, thus no need to invalidate()*/ }
1.1 moko 227:
228: public: // usage
229:
1.14 moko 230: VArray(size_t initial=0): farray(initial) {}
231: VArray(size_t size, Value** elements): farray(size, elements) {}
1.1 moko 232:
233: ArrayValue &array() { return farray; }
234:
235: static size_t index(int aindex){
236: if(aindex<0)
1.9 moko 237: throw Exception("number.format", 0, "index out of range (negative)");
1.1 moko 238: return aindex;
239: }
240:
1.7 moko 241: static size_t index(const String::Body& aindex){ return pa_atoui(aindex.cstr()); }
242: static size_t index(const String& aindex){ return pa_atoui(aindex.cstr(), 10, &aindex); }
1.1 moko 243:
1.12 moko 244: static bool is_index(const String& aindex){
245: for(const char *pos=aindex.cstr();*pos;pos++){
246: if ((*pos < '0') || (*pos > '9'))
247: return false;
248: }
249: return true;
250: }
251:
1.5 moko 252: bool contains(size_t index){
253: return farray.get(index) != NULL;
1.1 moko 254: }
255:
256: private:
257:
258: ArrayValue farray;
259:
260: };
261:
262: #endif
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