Git conversion: Make reactos the root directory, move rosapps, rostests, wallpapers into modules, and delete rossubsys.

dll/win32/jscript/number.c

@@ -0,0 +1,638 @@
+/*
+ * 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;
+}