mirror of
https://github.com/reactos/wine.git
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367 lines
9.6 KiB
C
367 lines
9.6 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 "config.h"
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#include "wine/port.h"
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#include <math.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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static inline NumberInstance *number_from_vdisp(vdisp_t *vdisp)
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{
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return (NumberInstance*)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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/* 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, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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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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BSTR 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, ei, JS_E_NUMBER_EXPECTED, NULL);
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if(arg_cnt(dp)) {
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hres = to_int32(ctx, get_arg(dp, 0), ei, &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, ei, JS_E_INVALIDARG, NULL);
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}
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val = number->value;
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if(radix==10 || isnan(val) || isinf(val)) {
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VARIANT v;
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num_set_val(&v, val);
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hres = to_string(ctx, &v, ei, &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 = SysAllocString(buf);
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if(!str)
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return E_OUTOFMEMORY;
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}
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if(retv) {
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V_VT(retv) = VT_BSTR;
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V_BSTR(retv) = str;
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}else {
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SysFreeString(str);
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}
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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, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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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, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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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_toExponential(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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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_toPrecision(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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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_valueOf(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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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, ei, JS_E_NUMBER_EXPECTED, NULL);
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if(retv)
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num_set_val(retv, number->value);
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return S_OK;
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}
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static HRESULT Number_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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{
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NumberInstance *number = number_from_vdisp(jsthis);
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switch(flags) {
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case INVOKE_FUNC:
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return throw_type_error(ctx, ei, JS_E_FUNCTION_EXPECTED, NULL);
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case DISPATCH_PROPERTYGET:
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num_set_val(retv, number->value);
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break;
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default:
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FIXME("flags %x\n", flags);
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return E_NOTIMPL;
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}
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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, Number_value, 0},
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sizeof(Number_props)/sizeof(*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 HRESULT NumberConstr_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flags, DISPPARAMS *dp,
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VARIANT *retv, jsexcept_t *ei)
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{
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double n;
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HRESULT hres;
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TRACE("\n");
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switch(flags) {
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case INVOKE_FUNC:
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if(!arg_cnt(dp)) {
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if(retv) {
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V_VT(retv) = VT_I4;
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V_I4(retv) = 0;
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}
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return S_OK;
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}
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hres = to_number(ctx, get_arg(dp, 0), ei, &n);
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if(FAILED(hres))
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return hres;
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if(retv)
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num_set_val(retv, n);
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break;
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case DISPATCH_CONSTRUCT: {
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jsdisp_t *obj;
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if(arg_cnt(dp)) {
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hres = to_number(ctx, get_arg(dp, 0), ei, &n);
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if(FAILED(hres))
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return hres;
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}else {
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n = 0;
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}
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hres = create_number(ctx, n, &obj);
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if(FAILED(hres))
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return hres;
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var_set_jsdisp(retv, obj);
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break;
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}
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default:
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FIXME("unimplemented flags %x\n", flags);
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return E_NOTIMPL;
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}
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return S_OK;
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}
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static HRESULT alloc_number(script_ctx_t *ctx, jsdisp_t *object_prototype, NumberInstance **ret)
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{
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NumberInstance *number;
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HRESULT hres;
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number = heap_alloc_zero(sizeof(NumberInstance));
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if(!number)
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return E_OUTOFMEMORY;
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if(object_prototype)
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hres = init_dispex(&number->dispex, ctx, &Number_info, object_prototype);
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else
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hres = init_dispex_from_constr(&number->dispex, ctx, &Number_info, ctx->number_constr);
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if(FAILED(hres))
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return hres;
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*ret = number;
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return S_OK;
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}
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HRESULT create_number_constr(script_ctx_t *ctx, jsdisp_t *object_prototype, jsdisp_t **ret)
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{
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NumberInstance *number;
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HRESULT hres;
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static const WCHAR NumberW[] = {'N','u','m','b','e','r',0};
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hres = alloc_number(ctx, object_prototype, &number);
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if(FAILED(hres))
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return hres;
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number->value = 0;
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hres = create_builtin_function(ctx, NumberConstr_value, NumberW, NULL,
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PROPF_CONSTR|1, &number->dispex, ret);
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jsdisp_release(&number->dispex);
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return hres;
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}
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HRESULT create_number(script_ctx_t *ctx, double value, jsdisp_t **ret)
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{
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NumberInstance *number;
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HRESULT hres;
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hres = alloc_number(ctx, NULL, &number);
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if(FAILED(hres))
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return hres;
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number->value = value;
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*ret = &number->dispex;
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return S_OK;
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}
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