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wine/dlls/jscript/jsutils.c
Jacek Caban ac8d2f1fae jscript: jsdisp_t to IDispatch casts clean up.
2010-09-07 16:01:52 +02:00

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/*
* 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 "config.h"
#include "wine/port.h"
#include <math.h>
#include "jscript.h"
#include "engine.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(jscript);
WINE_DECLARE_DEBUG_CHANNEL(heap);
const char *debugstr_variant(const VARIANT *v)
{
if(!v)
return "(null)";
switch(V_VT(v)) {
case VT_EMPTY:
return "{VT_EMPTY}";
case VT_NULL:
return "{VT_NULL}";
case VT_I4:
return wine_dbg_sprintf("{VT_I4: %d}", V_I4(v));
case VT_R8:
return wine_dbg_sprintf("{VT_R8: %lf}", V_R8(v));
case VT_BSTR:
return wine_dbg_sprintf("{VT_BSTR: %s}", debugstr_w(V_BSTR(v)));
case VT_DISPATCH:
return wine_dbg_sprintf("{VT_DISPATCH: %p}", V_DISPATCH(v));
case VT_BOOL:
return wine_dbg_sprintf("{VT_BOOL: %x}", V_BOOL(v));
default:
return wine_dbg_sprintf("{vt %d}", V_VT(v));
}
}
#define MIN_BLOCK_SIZE 128
#define ARENA_FREE_FILLER 0xaa
static inline DWORD block_size(DWORD block)
{
return MIN_BLOCK_SIZE << block;
}
void jsheap_init(jsheap_t *heap)
{
memset(heap, 0, sizeof(*heap));
list_init(&heap->custom_blocks);
}
void *jsheap_alloc(jsheap_t *heap, DWORD size)
{
struct list *list;
void *tmp;
if(!heap->block_cnt) {
if(!heap->blocks) {
heap->blocks = heap_alloc(sizeof(void*));
if(!heap->blocks)
return NULL;
}
tmp = heap_alloc(block_size(0));
if(!tmp)
return NULL;
heap->blocks[0] = tmp;
heap->block_cnt = 1;
}
if(heap->offset + size <= block_size(heap->last_block)) {
tmp = ((BYTE*)heap->blocks[heap->last_block])+heap->offset;
heap->offset += size;
return tmp;
}
if(size <= block_size(heap->last_block+1)) {
if(heap->last_block+1 == heap->block_cnt) {
tmp = heap_realloc(heap->blocks, (heap->block_cnt+1)*sizeof(void*));
if(!tmp)
return NULL;
heap->blocks = tmp;
heap->blocks[heap->block_cnt] = heap_alloc(block_size(heap->block_cnt));
if(!heap->blocks[heap->block_cnt])
return NULL;
heap->block_cnt++;
}
heap->last_block++;
heap->offset = size;
return heap->blocks[heap->last_block];
}
list = heap_alloc(size + sizeof(struct list));
if(!list)
return NULL;
list_add_head(&heap->custom_blocks, list);
return list+1;
}
void *jsheap_grow(jsheap_t *heap, void *mem, DWORD size, DWORD inc)
{
if(mem == (BYTE*)heap->blocks[heap->last_block] + heap->offset-size
&& heap->offset+inc < block_size(heap->last_block)) {
heap->offset += inc;
return mem;
}
return jsheap_alloc(heap, size+inc);
}
void jsheap_clear(jsheap_t *heap)
{
struct list *tmp;
if(!heap)
return;
while((tmp = list_next(&heap->custom_blocks, &heap->custom_blocks))) {
list_remove(tmp);
heap_free(tmp);
}
if(WARN_ON(heap)) {
DWORD i;
for(i=0; i < heap->block_cnt; i++)
memset(heap->blocks[i], ARENA_FREE_FILLER, block_size(i));
}
heap->last_block = heap->offset = 0;
heap->mark = FALSE;
}
void jsheap_free(jsheap_t *heap)
{
DWORD i;
jsheap_clear(heap);
for(i=0; i < heap->block_cnt; i++)
heap_free(heap->blocks[i]);
heap_free(heap->blocks);
jsheap_init(heap);
}
jsheap_t *jsheap_mark(jsheap_t *heap)
{
if(heap->mark)
return NULL;
heap->mark = TRUE;
return heap;
}
/* ECMA-262 3rd Edition 9.1 */
HRESULT to_primitive(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret, hint_t hint)
{
switch(V_VT(v)) {
case VT_EMPTY:
case VT_NULL:
case VT_BOOL:
case VT_I4:
case VT_R8:
*ret = *v;
break;
case VT_BSTR:
V_VT(ret) = VT_BSTR;
V_BSTR(ret) = SysAllocString(V_BSTR(v));
break;
case VT_DISPATCH: {
jsdisp_t *jsdisp;
DISPID id;
DISPPARAMS dp = {NULL, NULL, 0, 0};
HRESULT hres;
static const WCHAR toStringW[] = {'t','o','S','t','r','i','n','g',0};
static const WCHAR valueOfW[] = {'v','a','l','u','e','O','f',0};
if(!V_DISPATCH(v)) {
V_VT(ret) = VT_NULL;
break;
}
jsdisp = iface_to_jsdisp((IUnknown*)V_DISPATCH(v));
if(!jsdisp) {
V_VT(ret) = VT_EMPTY;
return disp_propget(ctx, V_DISPATCH(v), DISPID_VALUE, ret, ei, NULL /*FIXME*/);
}
if(hint == NO_HINT)
hint = is_class(jsdisp, JSCLASS_DATE) ? HINT_STRING : HINT_NUMBER;
/* Native implementation doesn't throw TypeErrors, returns strange values */
hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? toStringW : valueOfW, 0, &id);
if(SUCCEEDED(hres)) {
hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, &dp, ret, ei, NULL /*FIXME*/);
if(FAILED(hres)) {
WARN("call error - forwarding exception\n");
jsdisp_release(jsdisp);
return hres;
}
else if(V_VT(ret) != VT_DISPATCH) {
jsdisp_release(jsdisp);
return S_OK;
}
else
IDispatch_Release(V_DISPATCH(ret));
}
hres = jsdisp_get_id(jsdisp, hint == HINT_STRING ? valueOfW : toStringW, 0, &id);
if(SUCCEEDED(hres)) {
hres = jsdisp_call(jsdisp, id, DISPATCH_METHOD, &dp, ret, ei, NULL /*FIXME*/);
if(FAILED(hres)) {
WARN("call error - forwarding exception\n");
jsdisp_release(jsdisp);
return hres;
}
else if(V_VT(ret) != VT_DISPATCH) {
jsdisp_release(jsdisp);
return S_OK;
}
else
IDispatch_Release(V_DISPATCH(ret));
}
jsdisp_release(jsdisp);
WARN("failed\n");
return throw_type_error(ctx, ei, IDS_TO_PRIMITIVE, NULL);
}
default:
FIXME("Unimplemented for vt %d\n", V_VT(v));
return E_NOTIMPL;
}
return S_OK;
}
/* ECMA-262 3rd Edition 9.2 */
HRESULT to_boolean(VARIANT *v, VARIANT_BOOL *b)
{
switch(V_VT(v)) {
case VT_EMPTY:
case VT_NULL:
*b = VARIANT_FALSE;
break;
case VT_I4:
*b = V_I4(v) ? VARIANT_TRUE : VARIANT_FALSE;
break;
case VT_R8:
if(isnan(V_R8(v))) *b = VARIANT_FALSE;
else *b = V_R8(v) ? VARIANT_TRUE : VARIANT_FALSE;
break;
case VT_BSTR:
*b = V_BSTR(v) && *V_BSTR(v) ? VARIANT_TRUE : VARIANT_FALSE;
break;
case VT_DISPATCH:
*b = V_DISPATCH(v) ? VARIANT_TRUE : VARIANT_FALSE;
break;
case VT_BOOL:
*b = V_BOOL(v);
break;
default:
FIXME("unimplemented for vt %d\n", V_VT(v));
return E_NOTIMPL;
}
return S_OK;
}
static int hex_to_int(WCHAR c)
{
if('0' <= c && c <= '9')
return c-'0';
if('a' <= c && c <= 'f')
return c-'a'+10;
if('A' <= c && c <= 'F')
return c-'A'+10;
return -1;
}
/* ECMA-262 3rd Edition 9.3.1 */
static HRESULT str_to_number(BSTR str, VARIANT *ret)
{
const WCHAR *ptr = str;
BOOL neg = FALSE;
DOUBLE d = 0.0;
static const WCHAR infinityW[] = {'I','n','f','i','n','i','t','y'};
while(isspaceW(*ptr))
ptr++;
if(*ptr == '-') {
neg = TRUE;
ptr++;
}else if(*ptr == '+') {
ptr++;
}
if(!strncmpW(ptr, infinityW, sizeof(infinityW)/sizeof(WCHAR))) {
ptr += sizeof(infinityW)/sizeof(WCHAR);
while(*ptr && isspaceW(*ptr))
ptr++;
if(*ptr)
num_set_nan(ret);
else
num_set_inf(ret, !neg);
return S_OK;
}
if(*ptr == '0' && ptr[1] == 'x') {
DWORD l = 0;
ptr += 2;
while((l = hex_to_int(*ptr)) != -1) {
d = d*16 + l;
ptr++;
}
num_set_val(ret, d);
return S_OK;
}
while(isdigitW(*ptr))
d = d*10 + (*ptr++ - '0');
if(*ptr == 'e' || *ptr == 'E') {
BOOL eneg = FALSE;
LONG l = 0;
ptr++;
if(*ptr == '-') {
ptr++;
eneg = TRUE;
}else if(*ptr == '+') {
ptr++;
}
while(isdigitW(*ptr))
l = l*10 + (*ptr++ - '0');
if(eneg)
l = -l;
d *= pow(10, l);
}else if(*ptr == '.') {
DOUBLE dec = 0.1;
ptr++;
while(isdigitW(*ptr)) {
d += dec * (*ptr++ - '0');
dec *= 0.1;
}
}
while(isspaceW(*ptr))
ptr++;
if(*ptr) {
num_set_nan(ret);
return S_OK;
}
if(neg)
d = -d;
num_set_val(ret, d);
return S_OK;
}
/* ECMA-262 3rd Edition 9.3 */
HRESULT to_number(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret)
{
switch(V_VT(v)) {
case VT_EMPTY:
num_set_nan(ret);
break;
case VT_NULL:
V_VT(ret) = VT_I4;
V_I4(ret) = 0;
break;
case VT_I4:
case VT_R8:
*ret = *v;
break;
case VT_BSTR:
return str_to_number(V_BSTR(v), ret);
case VT_DISPATCH: {
VARIANT prim;
HRESULT hres;
hres = to_primitive(ctx, v, ei, &prim, HINT_NUMBER);
if(FAILED(hres))
return hres;
hres = to_number(ctx, &prim, ei, ret);
VariantClear(&prim);
return hres;
}
case VT_BOOL:
V_VT(ret) = VT_I4;
V_I4(ret) = V_BOOL(v) ? 1 : 0;
break;
default:
FIXME("unimplemented for vt %d\n", V_VT(v));
return E_NOTIMPL;
}
return S_OK;
}
/* ECMA-262 3rd Edition 9.4 */
HRESULT to_integer(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret)
{
VARIANT num;
HRESULT hres;
hres = to_number(ctx, v, ei, &num);
if(FAILED(hres))
return hres;
if(V_VT(&num) == VT_I4) {
*ret = num;
}else if(isnan(V_R8(&num))) {
V_VT(ret) = VT_I4;
V_I4(ret) = 0;
}else {
num_set_val(ret, V_R8(&num) >= 0.0 ? floor(V_R8(&num)) : -floor(-V_R8(&num)));
}
return S_OK;
}
/* ECMA-262 3rd Edition 9.5 */
HRESULT to_int32(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, INT *ret)
{
VARIANT num;
HRESULT hres;
hres = to_number(ctx, v, ei, &num);
if(FAILED(hres))
return hres;
if(V_VT(&num) == VT_I4)
*ret = V_I4(&num);
else
*ret = isnan(V_R8(&num)) || isinf(V_R8(&num)) ? 0 : (INT)V_R8(&num);
return S_OK;
}
/* ECMA-262 3rd Edition 9.6 */
HRESULT to_uint32(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, DWORD *ret)
{
VARIANT num;
HRESULT hres;
hres = to_number(ctx, v, ei, &num);
if(FAILED(hres))
return hres;
if(V_VT(&num) == VT_I4)
*ret = V_I4(&num);
else
*ret = isnan(V_R8(&num)) || isinf(V_R8(&num)) ? 0 : (DWORD)V_R8(&num);
return S_OK;
}
static BSTR int_to_bstr(INT i)
{
WCHAR buf[12], *p;
BOOL neg = FALSE;
if(!i) {
static const WCHAR zeroW[] = {'0',0};
return SysAllocString(zeroW);
}
if(i < 0) {
neg = TRUE;
i = -i;
}
p = buf + sizeof(buf)/sizeof(*buf)-1;
*p-- = 0;
while(i) {
*p-- = i%10 + '0';
i /= 10;
}
if(neg)
*p = '-';
else
p++;
return SysAllocString(p);
}
/* ECMA-262 3rd Edition 9.8 */
HRESULT to_string(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, BSTR *str)
{
const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
const WCHAR nullW[] = {'n','u','l','l',0};
const WCHAR trueW[] = {'t','r','u','e',0};
const WCHAR falseW[] = {'f','a','l','s','e',0};
const WCHAR NaNW[] = {'N','a','N',0};
const WCHAR InfinityW[] = {'-','I','n','f','i','n','i','t','y',0};
switch(V_VT(v)) {
case VT_EMPTY:
*str = SysAllocString(undefinedW);
break;
case VT_NULL:
*str = SysAllocString(nullW);
break;
case VT_I4:
*str = int_to_bstr(V_I4(v));
break;
case VT_R8: {
if(isnan(V_R8(v)))
*str = SysAllocString(NaNW);
else if(isinf(V_R8(v)))
*str = SysAllocString(V_R8(v)<0 ? InfinityW : InfinityW+1);
else {
VARIANT strv;
HRESULT hres;
V_VT(&strv) = VT_EMPTY;
hres = VariantChangeTypeEx(&strv, v, MAKELCID(MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US),SORT_DEFAULT), 0, VT_BSTR);
if(FAILED(hres))
return hres;
*str = V_BSTR(&strv);
return S_OK;
}
break;
}
case VT_BSTR:
*str = SysAllocString(V_BSTR(v));
break;
case VT_DISPATCH: {
VARIANT prim;
HRESULT hres;
hres = to_primitive(ctx, v, ei, &prim, HINT_STRING);
if(FAILED(hres))
return hres;
hres = to_string(ctx, &prim, ei, str);
VariantClear(&prim);
return hres;
}
case VT_BOOL:
*str = SysAllocString(V_BOOL(v) ? trueW : falseW);
break;
default:
FIXME("unsupported vt %d\n", V_VT(v));
return E_NOTIMPL;
}
return *str ? S_OK : E_OUTOFMEMORY;
}
/* ECMA-262 3rd Edition 9.9 */
HRESULT to_object(script_ctx_t *ctx, VARIANT *v, IDispatch **disp)
{
jsdisp_t *dispex;
HRESULT hres;
switch(V_VT(v)) {
case VT_BSTR:
hres = create_string(ctx, V_BSTR(v), SysStringLen(V_BSTR(v)), &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
case VT_I4:
case VT_R8:
hres = create_number(ctx, v, &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
case VT_DISPATCH:
if(V_DISPATCH(v)) {
IDispatch_AddRef(V_DISPATCH(v));
*disp = V_DISPATCH(v);
}else {
jsdisp_t *obj;
hres = create_object(ctx, NULL, &obj);
if(FAILED(hres))
return hres;
*disp = to_disp(obj);
}
break;
case VT_BOOL:
hres = create_bool(ctx, V_BOOL(v), &dispex);
if(FAILED(hres))
return hres;
*disp = to_disp(dispex);
break;
default:
FIXME("unsupported vt %d\n", V_VT(v));
return E_NOTIMPL;
}
return S_OK;
}
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