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