2 * Copyright 2008 Jacek Caban for CodeWeavers
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 #include "wine/port.h"
27 #include "wine/debug.h"
29 WINE_DEFAULT_DEBUG_CHANNEL(jscript);
37 static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
38 static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
39 static const WCHAR toFixedW[] = {'t','o','F','i','x','e','d',0};
40 static const WCHAR toExponentialW[] = {'t','o','E','x','p','o','n','e','n','t','i','a','l',0};
41 static const WCHAR toPrecisionW[] = {'t','o','P','r','e','c','i','s','i','o','n',0};
42 static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
44 #define NUMBER_TOSTRING_BUF_SIZE 64
45 #define NUMBER_DTOA_SIZE 18
47 static inline NumberInstance *number_from_vdisp(vdisp_t *vdisp)
49 return (NumberInstance*)vdisp->u.jsdisp;
52 static inline NumberInstance *number_this(vdisp_t *jsthis)
54 return is_vclass(jsthis, JSCLASS_NUMBER) ? number_from_vdisp(jsthis) : NULL;
57 static inline void dtoa(double d, WCHAR *buf, int size, int *dec_point)
62 /* TODO: this function should print doubles with bigger precision */
63 assert(size>=2 && size<=NUMBER_DTOA_SIZE && d>=0);
68 *dec_point = floor(log10(d));
69 l = d*pow(10, size-*dec_point-1);
77 for(i=size-2; i>=0; i--) {
82 /* log10 was wrong by 1 or rounding changed number of digits */
85 memmove(buf+1, buf, size-2);
87 }else if(buf[0]=='0' && buf[1]>='1' && buf[1]<='9') {
89 memmove(buf, buf+1, size-2);
94 static inline void number_to_fixed(double val, int prec, BSTR *out)
96 WCHAR buf[NUMBER_DTOA_SIZE];
97 int dec_point, size, buf_size, buf_pos;
106 if(val<=-1 || val>=1)
107 buf_size = log10(val)+prec+2;
110 if(buf_size > NUMBER_DTOA_SIZE)
111 buf_size = NUMBER_DTOA_SIZE;
113 dtoa(val, buf, buf_size, &dec_point);
125 str = SysAllocStringLen(NULL, size);
130 for(;buf_pos<buf_size-1 && dec_point; dec_point--)
131 str[size++] = buf[buf_pos++];
135 for(; dec_point>0; dec_point--)
140 for(; dec_point<0 && prec; dec_point++, prec--)
142 for(; buf_pos<buf_size-1 && prec; prec--)
143 str[size++] = buf[buf_pos++];
144 for(; prec; prec--) {
153 static inline void number_to_exponential(double val, int prec, BSTR *out)
155 WCHAR buf[NUMBER_DTOA_SIZE], *pbuf;
156 int dec_point, size, buf_size, exp_size = 1;
166 if(buf_size<2 || buf_size>NUMBER_DTOA_SIZE)
167 buf_size = NUMBER_DTOA_SIZE;
168 dtoa(val, buf, buf_size, &dec_point);
171 for(; buf_size>1 && buf[buf_size-1]=='0'; buf_size--)
175 while(dec_point>=size || dec_point<=-size) {
181 size = buf_size+2+exp_size; /* 2 = strlen(e+) */
183 size = buf_size+3+exp_size; /* 3 = strlen(.e+) */
185 size = prec+4+exp_size; /* 4 = strlen(0.e+) */
188 str = SysAllocStringLen(NULL, size);
194 str[size++] = *pbuf++;
198 str[size++] = *pbuf++;
199 for(; prec>buf_size-1; prec--)
207 dec_point = -dec_point;
211 str[--size] = '0'+dec_point%10;
220 /* ECMA-262 3rd Edition 15.7.4.2 */
221 static HRESULT Number_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
222 jsval_t *r, jsexcept_t *ei)
224 NumberInstance *number;
232 if(!(number = number_this(jsthis)))
233 return throw_type_error(ctx, ei, JS_E_NUMBER_EXPECTED, NULL);
236 hres = to_int32(ctx, argv[0], ei, &radix);
240 if(radix<2 || radix>36)
241 return throw_type_error(ctx, ei, JS_E_INVALIDARG, NULL);
246 if(radix==10 || isnan(val) || isinf(val)) {
247 hres = to_string(ctx, jsval_number(val), ei, &str);
252 DOUBLE integ, frac, log_radix = 0;
253 WCHAR buf[NUMBER_TOSTRING_BUF_SIZE+16];
267 while(integ>=1 && idx<NUMBER_TOSTRING_BUF_SIZE) {
268 buf[idx] = fmod(integ, radix);
269 if(buf[idx]<10) buf[idx] += '0';
270 else buf[idx] += 'a'-10;
275 if(idx<NUMBER_TOSTRING_BUF_SIZE) {
276 INT beg = buf[0]=='-'?1:0;
282 buf[beg++] = buf[end];
287 if(idx != NUMBER_TOSTRING_BUF_SIZE) buf[idx++] = '.';
289 while(frac>0 && idx<NUMBER_TOSTRING_BUF_SIZE) {
291 buf[idx] = fmod(frac, radix);
293 if(buf[idx]<10) buf[idx] += '0';
294 else buf[idx] += 'a'-10;
298 if(idx==NUMBER_TOSTRING_BUF_SIZE && !exp) {
300 idx = (buf[0]=='-') ? 1 : 0;
301 log_radix = floor(log(val)/log(radix));
302 val *= pow(radix, -log_radix);
309 while(buf[idx-1] == '0') idx--;
310 if(buf[idx-1] == '.') idx--;
316 static const WCHAR formatW[] = {'(','e','%','c','%','d',')',0};
320 log_radix = -log_radix;
324 sprintfW(&buf[idx], formatW, ch, (int)log_radix);
327 else buf[idx] = '\0';
329 str = SysAllocString(buf);
331 return E_OUTOFMEMORY;
335 *r = jsval_string(str);
341 static HRESULT Number_toLocaleString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
342 jsval_t *r, jsexcept_t *ei)
348 static HRESULT Number_toFixed(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
349 jsval_t *r, jsexcept_t *ei)
351 NumberInstance *number;
359 if(!(number = number_this(jsthis)))
360 return throw_type_error(ctx, ei, JS_E_NUMBER_EXPECTED, NULL);
363 hres = to_int32(ctx, argv[0], ei, &prec);
367 if(prec<0 || prec>20)
368 return throw_range_error(ctx, ei, JS_E_FRACTION_DIGITS_OUT_OF_RANGE, NULL);
372 if(isinf(val) || isnan(val)) {
373 hres = to_string(ctx, jsval_number(val), ei, &str);
377 number_to_fixed(val, prec, &str);
381 *r = jsval_string(str);
387 static HRESULT Number_toExponential(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
388 jsval_t *r, jsexcept_t *ei)
390 NumberInstance *number;
398 if(!(number = number_this(jsthis)))
399 return throw_type_error(ctx, ei, JS_E_NUMBER_EXPECTED, NULL);
402 hres = to_int32(ctx, argv[0], ei, &prec);
406 if(prec<0 || prec>20)
407 return throw_range_error(ctx, ei, JS_E_FRACTION_DIGITS_OUT_OF_RANGE, NULL);
411 if(isinf(val) || isnan(val)) {
412 hres = to_string(ctx, jsval_number(val), ei, &str);
418 number_to_exponential(val, prec, &str);
422 *r = jsval_string(str);
428 static HRESULT Number_toPrecision(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
429 jsval_t *r, jsexcept_t *ei)
431 NumberInstance *number;
437 if(!(number = number_this(jsthis)))
438 return throw_type_error(ctx, ei, JS_E_NUMBER_EXPECTED, NULL);
441 hres = to_int32(ctx, argv[0], ei, &prec);
445 if(prec<1 || prec>21)
446 return throw_range_error(ctx, ei, JS_E_PRECISION_OUT_OF_RANGE, NULL);
450 if(isinf(val) || isnan(val) || !prec) {
451 hres = to_string(ctx, jsval_number(val), ei, &str);
456 size = floor(log10(val>0 ? val : -val)) + 1;
461 number_to_exponential(val, prec-1, &str);
463 number_to_fixed(val, prec-size, &str);
467 *r = jsval_string(str);
473 static HRESULT Number_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
474 jsval_t *r, jsexcept_t *ei)
476 NumberInstance *number;
480 if(!(number = number_this(jsthis)))
481 return throw_type_error(ctx, ei, JS_E_NUMBER_EXPECTED, NULL);
484 *r = jsval_number(number->value);
488 static HRESULT Number_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
489 jsval_t *r, jsexcept_t *ei)
491 NumberInstance *number = number_from_vdisp(jsthis);
495 return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
496 case DISPATCH_PROPERTYGET:
497 *r = jsval_number(number->value);
501 FIXME("flags %x\n", flags);
508 static const builtin_prop_t Number_props[] = {
509 {toExponentialW, Number_toExponential, PROPF_METHOD|1},
510 {toFixedW, Number_toFixed, PROPF_METHOD},
511 {toLocaleStringW, Number_toLocaleString, PROPF_METHOD},
512 {toPrecisionW, Number_toPrecision, PROPF_METHOD|1},
513 {toStringW, Number_toString, PROPF_METHOD|1},
514 {valueOfW, Number_valueOf, PROPF_METHOD}
517 static const builtin_info_t Number_info = {
519 {NULL, Number_value, 0},
520 sizeof(Number_props)/sizeof(*Number_props),
526 static const builtin_info_t NumberInst_info = {
528 {NULL, Number_value, 0},
534 static HRESULT NumberConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
535 jsval_t *r, jsexcept_t *ei)
546 *r = jsval_number(0);
550 hres = to_number(ctx, argv[0], ei, &n);
555 *r = jsval_number(n);
558 case DISPATCH_CONSTRUCT: {
562 hres = to_number(ctx, argv[0], ei, &n);
569 hres = create_number(ctx, n, &obj);
577 FIXME("unimplemented flags %x\n", flags);
584 static HRESULT alloc_number(script_ctx_t *ctx, jsdisp_t *object_prototype, NumberInstance **ret)
586 NumberInstance *number;
589 number = heap_alloc_zero(sizeof(NumberInstance));
591 return E_OUTOFMEMORY;
594 hres = init_dispex(&number->dispex, ctx, &Number_info, object_prototype);
596 hres = init_dispex_from_constr(&number->dispex, ctx, &NumberInst_info, ctx->number_constr);
604 HRESULT create_number_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
606 NumberInstance *number;
609 static const WCHAR NumberW[] = {'N','u','m','b','e','r',0};
611 hres = alloc_number(ctx, object_prototype, &number);
616 hres = create_builtin_constructor(ctx, NumberConstr_value, NumberW, NULL,
617 PROPF_CONSTR|1, &number->dispex, ret);
619 jsdisp_release(&number->dispex);
623 HRESULT create_number(script_ctx_t *ctx, double value, jsdisp_t **ret)
625 NumberInstance *number;
628 hres = alloc_number(ctx, NULL, &number);
632 number->value = value;
634 *ret = &number->dispex;