+++ /dev/null
-/*
- * Copyright 2008 Jacek Caban for CodeWeavers
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
- */
-
-#include "jscript.h"
-
-typedef struct {
- jsdisp_t dispex;
-
- double value;
-} NumberInstance;
-
-static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
-static const WCHAR toLocaleStringW[] = {'t','o','L','o','c','a','l','e','S','t','r','i','n','g',0};
-static const WCHAR toFixedW[] = {'t','o','F','i','x','e','d',0};
-static const WCHAR toExponentialW[] = {'t','o','E','x','p','o','n','e','n','t','i','a','l',0};
-static const WCHAR toPrecisionW[] = {'t','o','P','r','e','c','i','s','i','o','n',0};
-static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
-
-#define NUMBER_TOSTRING_BUF_SIZE 64
-#define NUMBER_DTOA_SIZE 18
-
-static inline NumberInstance *number_from_jsdisp(jsdisp_t *jsdisp)
-{
- return CONTAINING_RECORD(jsdisp, NumberInstance, dispex);
-}
-
-static inline NumberInstance *number_from_vdisp(vdisp_t *vdisp)
-{
- return number_from_jsdisp(vdisp->u.jsdisp);
-}
-
-static inline NumberInstance *number_this(vdisp_t *jsthis)
-{
- return is_vclass(jsthis, JSCLASS_NUMBER) ? number_from_vdisp(jsthis) : NULL;
-}
-
-static inline void number_to_str(double d, WCHAR *buf, int size, int *dec_point)
-{
- ULONGLONG l;
- int i;
-
- /* TODO: this function should print doubles with bigger precision */
- assert(size>=2 && size<=NUMBER_DTOA_SIZE && d>=0);
-
- if(d == 0)
- *dec_point = 0;
- else
- *dec_point = floor(log10(d));
- l = d*pow(10, size-*dec_point-1);
-
- if(l%10 >= 5)
- l = l/10+1;
- else
- l /= 10;
-
- buf[size-1] = 0;
- for(i=size-2; i>=0; i--) {
- buf[i] = '0'+l%10;
- l /= 10;
- }
-
- /* log10 was wrong by 1 or rounding changed number of digits */
- if(l) {
- (*dec_point)++;
- memmove(buf+1, buf, size-2);
- buf[0] = '0'+l;
- }else if(buf[0]=='0' && buf[1]>='1' && buf[1]<='9') {
- (*dec_point)--;
- memmove(buf, buf+1, size-2);
- buf[size-2] = '0';
- }
-}
-
-static inline jsstr_t *number_to_fixed(double val, int prec)
-{
- WCHAR buf[NUMBER_DTOA_SIZE];
- int dec_point, size, buf_size, buf_pos;
- BOOL neg = FALSE;
- jsstr_t *ret;
- WCHAR *str;
-
- TRACE("%lf %d\n", val, prec);
-
- if(val < 0) {
- neg = TRUE;
- val = -val;
- }
-
- if(val >= 1)
- buf_size = log10(val)+prec+2;
- else
- buf_size = prec ? prec+1 : 2;
- if(buf_size > NUMBER_DTOA_SIZE)
- buf_size = NUMBER_DTOA_SIZE;
-
- number_to_str(val, buf, buf_size, &dec_point);
- dec_point++;
- size = 0;
- if(neg)
- size++;
- if(dec_point > 0)
- size += dec_point;
- else
- size++;
- if(prec)
- size += prec+1;
-
- ret = jsstr_alloc_buf(size, &str);
- if(!ret)
- return NULL;
-
- size = buf_pos = 0;
- if(neg)
- str[size++] = '-';
- if(dec_point > 0) {
- for(;buf_pos<buf_size-1 && dec_point; dec_point--)
- str[size++] = buf[buf_pos++];
- }else {
- str[size++] = '0';
- }
- for(; dec_point>0; dec_point--)
- str[size++] = '0';
- if(prec) {
- str[size++] = '.';
-
- for(; dec_point<0 && prec; dec_point++, prec--)
- str[size++] = '0';
- for(; buf_pos<buf_size-1 && prec; prec--)
- str[size++] = buf[buf_pos++];
- for(; prec; prec--) {
- str[size++] = '0';
- }
- }
- str[size++] = 0;
- return ret;
-}
-
-static inline jsstr_t *number_to_exponential(double val, int prec)
-{
- WCHAR buf[NUMBER_DTOA_SIZE], *pbuf;
- int dec_point, size, buf_size, exp_size = 1;
- BOOL neg = FALSE;
- jsstr_t *ret;
- WCHAR *str;
-
- if(val < 0) {
- neg = TRUE;
- val = -val;
- }
-
- buf_size = prec+2;
- if(buf_size<2 || buf_size>NUMBER_DTOA_SIZE)
- buf_size = NUMBER_DTOA_SIZE;
- number_to_str(val, buf, buf_size, &dec_point);
- buf_size--;
- if(prec == -1)
- for(; buf_size>1 && buf[buf_size-1]=='0'; buf_size--)
- buf[buf_size-1] = 0;
-
- size = 10;
- while(dec_point>=size || dec_point<=-size) {
- size *= 10;
- exp_size++;
- }
-
- if(buf_size == 1)
- size = buf_size+2+exp_size; /* 2 = strlen(e+) */
- else if(prec == -1)
- size = buf_size+3+exp_size; /* 3 = strlen(.e+) */
- else
- size = prec+4+exp_size; /* 4 = strlen(0.e+) */
- if(neg)
- size++;
-
- ret = jsstr_alloc_buf(size, &str);
- if(!ret)
- return NULL;
-
- size = 0;
- pbuf = buf;
- if(neg)
- str[size++] = '-';
- str[size++] = *pbuf++;
- if(buf_size != 1) {
- str[size++] = '.';
- while(*pbuf)
- str[size++] = *pbuf++;
- for(; prec>buf_size-1; prec--)
- str[size++] = '0';
- }
- str[size++] = 'e';
- if(dec_point >= 0) {
- str[size++] = '+';
- }else {
- str[size++] = '-';
- dec_point = -dec_point;
- }
- size += exp_size;
- do {
- str[--size] = '0'+dec_point%10;
- dec_point /= 10;
- }while(dec_point>0);
- size += exp_size;
- str[size] = 0;
-
- return ret;
-}
-
-/* ECMA-262 3rd Edition 15.7.4.2 */
-static HRESULT Number_toString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- NumberInstance *number;
- INT radix = 10;
- DOUBLE val;
- jsstr_t *str;
- HRESULT hres;
-
- TRACE("\n");
-
- if(!(number = number_this(jsthis)))
- return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
-
- if(argc) {
- hres = to_int32(ctx, argv[0], &radix);
- if(FAILED(hres))
- return hres;
-
- if(radix<2 || radix>36)
- return throw_type_error(ctx, JS_E_INVALIDARG, NULL);
- }
-
- val = number->value;
-
- if(radix==10 || !is_finite(val)) {
- hres = to_string(ctx, jsval_number(val), &str);
- if(FAILED(hres))
- return hres;
- }else {
- INT idx = 0;
- DOUBLE integ, frac, log_radix = 0;
- WCHAR buf[NUMBER_TOSTRING_BUF_SIZE+16];
- BOOL exp = FALSE;
-
- if(val<0) {
- val = -val;
- buf[idx++] = '-';
- }
-
- while(1) {
- integ = floor(val);
- frac = val-integ;
-
- if(integ == 0)
- buf[idx++] = '0';
- while(integ>=1 && idx<NUMBER_TOSTRING_BUF_SIZE) {
- buf[idx] = fmod(integ, radix);
- if(buf[idx]<10) buf[idx] += '0';
- else buf[idx] += 'a'-10;
- integ /= radix;
- idx++;
- }
-
- if(idx<NUMBER_TOSTRING_BUF_SIZE) {
- INT beg = buf[0]=='-'?1:0;
- INT end = idx-1;
- WCHAR wch;
-
- while(end > beg) {
- wch = buf[beg];
- buf[beg++] = buf[end];
- buf[end--] = wch;
- }
- }
-
- if(idx != NUMBER_TOSTRING_BUF_SIZE) buf[idx++] = '.';
-
- while(frac>0 && idx<NUMBER_TOSTRING_BUF_SIZE) {
- frac *= radix;
- buf[idx] = fmod(frac, radix);
- frac -= buf[idx];
- if(buf[idx]<10) buf[idx] += '0';
- else buf[idx] += 'a'-10;
- idx++;
- }
-
- if(idx==NUMBER_TOSTRING_BUF_SIZE && !exp) {
- exp = TRUE;
- idx = (buf[0]=='-') ? 1 : 0;
- log_radix = floor(log(val)/log(radix));
- val *= pow(radix, -log_radix);
- continue;
- }
-
- break;
- }
-
- while(buf[idx-1] == '0') idx--;
- if(buf[idx-1] == '.') idx--;
-
- if(exp) {
- if(log_radix==0)
- buf[idx] = 0;
- else {
- static const WCHAR formatW[] = {'(','e','%','c','%','d',')',0};
- WCHAR ch;
-
- if(log_radix<0) {
- log_radix = -log_radix;
- ch = '-';
- }
- else ch = '+';
- sprintfW(&buf[idx], formatW, ch, (int)log_radix);
- }
- }
- else buf[idx] = '\0';
-
- str = jsstr_alloc(buf);
- if(!str)
- return E_OUTOFMEMORY;
- }
-
- if(r)
- *r = jsval_string(str);
- else
- jsstr_release(str);
- return S_OK;
-}
-
-static HRESULT Number_toLocaleString(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- FIXME("\n");
- return E_NOTIMPL;
-}
-
-static HRESULT Number_toFixed(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- NumberInstance *number;
- DOUBLE val;
- INT prec = 0;
- jsstr_t *str;
- HRESULT hres;
-
- TRACE("\n");
-
- if(!(number = number_this(jsthis)))
- return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
-
- if(argc) {
- hres = to_int32(ctx, argv[0], &prec);
- if(FAILED(hres))
- return hres;
-
- if(prec<0 || prec>20)
- return throw_range_error(ctx, JS_E_FRACTION_DIGITS_OUT_OF_RANGE, NULL);
- }
-
- val = number->value;
- if(!is_finite(val)) {
- hres = to_string(ctx, jsval_number(val), &str);
- if(FAILED(hres))
- return hres;
- }else {
- str = number_to_fixed(val, prec);
- if(!str)
- return E_OUTOFMEMORY;
- }
-
- if(r)
- *r = jsval_string(str);
- else
- jsstr_release(str);
- return S_OK;
-}
-
-static HRESULT Number_toExponential(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- NumberInstance *number;
- DOUBLE val;
- INT prec = 0;
- jsstr_t *str;
- HRESULT hres;
-
- TRACE("\n");
-
- if(!(number = number_this(jsthis)))
- return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
-
- if(argc) {
- hres = to_int32(ctx, argv[0], &prec);
- if(FAILED(hres))
- return hres;
-
- if(prec<0 || prec>20)
- return throw_range_error(ctx, JS_E_FRACTION_DIGITS_OUT_OF_RANGE, NULL);
- }
-
- val = number->value;
- if(!is_finite(val)) {
- hres = to_string(ctx, jsval_number(val), &str);
- if(FAILED(hres))
- return hres;
- }else {
- if(!prec)
- prec--;
- str = number_to_exponential(val, prec);
- if(!str)
- return E_OUTOFMEMORY;
- }
-
- if(r)
- *r = jsval_string(str);
- else
- jsstr_release(str);
- return S_OK;
-}
-
-static HRESULT Number_toPrecision(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- NumberInstance *number;
- INT prec = 0, size;
- jsstr_t *str;
- DOUBLE val;
- HRESULT hres;
-
- if(!(number = number_this(jsthis)))
- return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
-
- if(argc) {
- hres = to_int32(ctx, argv[0], &prec);
- if(FAILED(hres))
- return hres;
-
- if(prec<1 || prec>21)
- return throw_range_error(ctx, JS_E_PRECISION_OUT_OF_RANGE, NULL);
- }
-
- val = number->value;
- if(!is_finite(val) || !prec) {
- hres = to_string(ctx, jsval_number(val), &str);
- if(FAILED(hres))
- return hres;
- }else {
- if(val != 0)
- size = floor(log10(val>0 ? val : -val)) + 1;
- else
- size = 1;
-
- if(size > prec)
- str = number_to_exponential(val, prec-1);
- else
- str = number_to_fixed(val, prec-size);
- if(!str)
- return E_OUTOFMEMORY;
- }
-
- if(r)
- *r = jsval_string(str);
- else
- jsstr_release(str);
- return S_OK;
-}
-
-static HRESULT Number_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- NumberInstance *number;
-
- TRACE("\n");
-
- if(!(number = number_this(jsthis)))
- return throw_type_error(ctx, JS_E_NUMBER_EXPECTED, NULL);
-
- if(r)
- *r = jsval_number(number->value);
- return S_OK;
-}
-
-static HRESULT Number_get_value(script_ctx_t *ctx, jsdisp_t *jsthis, jsval_t *r)
-{
- NumberInstance *number = number_from_jsdisp(jsthis);
-
- TRACE("(%p)\n", number);
-
- *r = jsval_number(number->value);
- return S_OK;
-}
-
-static const builtin_prop_t Number_props[] = {
- {toExponentialW, Number_toExponential, PROPF_METHOD|1},
- {toFixedW, Number_toFixed, PROPF_METHOD},
- {toLocaleStringW, Number_toLocaleString, PROPF_METHOD},
- {toPrecisionW, Number_toPrecision, PROPF_METHOD|1},
- {toStringW, Number_toString, PROPF_METHOD|1},
- {valueOfW, Number_valueOf, PROPF_METHOD}
-};
-
-static const builtin_info_t Number_info = {
- JSCLASS_NUMBER,
- {NULL, NULL,0, Number_get_value},
- sizeof(Number_props)/sizeof(*Number_props),
- Number_props,
- NULL,
- NULL
-};
-
-static const builtin_info_t NumberInst_info = {
- JSCLASS_NUMBER,
- {NULL, NULL,0, Number_get_value},
- 0, NULL,
- NULL,
- NULL
-};
-
-static HRESULT NumberConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, unsigned argc, jsval_t *argv,
- jsval_t *r)
-{
- double n;
- HRESULT hres;
-
- TRACE("\n");
-
- switch(flags) {
- case INVOKE_FUNC:
- if(!argc) {
- if(r)
- *r = jsval_number(0);
- return S_OK;
- }
-
- hres = to_number(ctx, argv[0], &n);
- if(FAILED(hres))
- return hres;
-
- if(r)
- *r = jsval_number(n);
- break;
-
- case DISPATCH_CONSTRUCT: {
- jsdisp_t *obj;
-
- if(argc) {
- hres = to_number(ctx, argv[0], &n);
- if(FAILED(hres))
- return hres;
- }else {
- n = 0;
- }
-
- hres = create_number(ctx, n, &obj);
- if(FAILED(hres))
- return hres;
-
- *r = jsval_obj(obj);
- break;
- }
- default:
- FIXME("unimplemented flags %x\n", flags);
- return E_NOTIMPL;
- }
-
- return S_OK;
-}
-
-static HRESULT alloc_number(script_ctx_t *ctx, jsdisp_t *object_prototype, NumberInstance **ret)
-{
- NumberInstance *number;
- HRESULT hres;
-
- number = heap_alloc_zero(sizeof(NumberInstance));
- if(!number)
- return E_OUTOFMEMORY;
-
- if(object_prototype)
- hres = init_dispex(&number->dispex, ctx, &Number_info, object_prototype);
- else
- hres = init_dispex_from_constr(&number->dispex, ctx, &NumberInst_info, ctx->number_constr);
- if(FAILED(hres)) {
- heap_free(number);
- return hres;
- }
-
- *ret = number;
- return S_OK;
-}
-
-HRESULT create_number_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
-{
- NumberInstance *number;
- HRESULT hres;
-
- static const WCHAR NumberW[] = {'N','u','m','b','e','r',0};
-
- hres = alloc_number(ctx, object_prototype, &number);
- if(FAILED(hres))
- return hres;
-
- number->value = 0;
- hres = create_builtin_constructor(ctx, NumberConstr_value, NumberW, NULL,
- PROPF_CONSTR|1, &number->dispex, ret);
-
- jsdisp_release(&number->dispex);
- return hres;
-}
-
-HRESULT create_number(script_ctx_t *ctx, double value, jsdisp_t **ret)
-{
- NumberInstance *number;
- HRESULT hres;
-
- hres = alloc_number(ctx, NULL, &number);
- if(FAILED(hres))
- return hres;
-
- number->value = value;
-
- *ret = &number->dispex;
- return S_OK;
-}
projects / reactos.git / blobdiff