510 lines
11 KiB
C
510 lines
11 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 "jscript.h"
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#include "engine.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(jscript);
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const char *debugstr_variant(const VARIANT *v)
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{
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switch(V_VT(v)) {
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case VT_EMPTY:
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return wine_dbg_sprintf("{VT_EMPTY}");
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case VT_NULL:
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return wine_dbg_sprintf("{VT_NULL}");
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case VT_I4:
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return wine_dbg_sprintf("{VT_I4: %d}", V_I4(v));
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case VT_R8:
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return wine_dbg_sprintf("{VT_R8: %lf}", V_R8(v));
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case VT_BSTR:
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return wine_dbg_sprintf("{VT_BSTR: %s}", debugstr_w(V_BSTR(v)));
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case VT_DISPATCH:
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return wine_dbg_sprintf("{VT_DISPATCH: %p}", V_DISPATCH(v));
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case VT_BOOL:
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return wine_dbg_sprintf("{VT_BOOL: %x}", V_BOOL(v));
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default:
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return wine_dbg_sprintf("{vt %d}", V_VT(v));
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}
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}
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#define MIN_BLOCK_SIZE 128
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static inline DWORD block_size(DWORD block)
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{
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return MIN_BLOCK_SIZE << block;
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}
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void jsheap_init(jsheap_t *heap)
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{
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memset(heap, 0, sizeof(*heap));
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list_init(&heap->custom_blocks);
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}
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void *jsheap_alloc(jsheap_t *heap, DWORD size)
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{
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struct list *list;
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void *tmp;
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if(!heap->block_cnt) {
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if(!heap->blocks) {
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heap->blocks = heap_alloc(sizeof(void*));
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if(!heap->blocks)
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return NULL;
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}
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tmp = heap_alloc(block_size(0));
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if(!tmp)
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return NULL;
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heap->blocks[0] = tmp;
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heap->block_cnt = 1;
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}
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if(heap->offset + size < block_size(heap->last_block)) {
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tmp = ((BYTE*)heap->blocks[heap->last_block])+heap->offset;
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heap->offset += size;
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return tmp;
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}
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if(size < block_size(heap->last_block+1)) {
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if(heap->last_block+1 == heap->block_cnt) {
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tmp = heap_realloc(heap->blocks, (heap->block_cnt+1)*sizeof(void*));
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if(!tmp)
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return NULL;
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heap->blocks = tmp;
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}
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tmp = heap_alloc(block_size(heap->block_cnt+1));
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if(!tmp)
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return NULL;
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heap->blocks[heap->block_cnt++] = tmp;
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heap->last_block++;
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heap->offset = size;
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return heap->blocks[heap->last_block];
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}
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list = heap_alloc(size + sizeof(struct list));
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if(!list)
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return NULL;
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list_add_head(&heap->custom_blocks, list);
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return list+1;
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}
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void *jsheap_grow(jsheap_t *heap, void *mem, DWORD size, DWORD inc)
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{
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if(mem == (BYTE*)heap->blocks[heap->last_block] + heap->offset-size
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&& heap->offset+inc < block_size(heap->last_block)) {
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heap->offset += inc;
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return mem;
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}
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return jsheap_alloc(heap, size+inc);
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}
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void jsheap_clear(jsheap_t *heap)
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{
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struct list *tmp;
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if(!heap)
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return;
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while((tmp = list_next(&heap->custom_blocks, &heap->custom_blocks))) {
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list_remove(tmp);
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heap_free(tmp);
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}
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heap->last_block = heap->offset = 0;
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}
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void jsheap_free(jsheap_t *heap)
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{
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DWORD i;
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jsheap_clear(heap);
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for(i=0; i < heap->block_cnt; i++)
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heap_free(heap->blocks[i]);
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heap_free(heap->blocks);
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jsheap_init(heap);
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}
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jsheap_t *jsheap_mark(jsheap_t *heap)
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{
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if(heap->mark)
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return NULL;
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heap->mark = TRUE;
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return heap;
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}
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/* ECMA-262 3rd Edition 9.1 */
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HRESULT to_primitive(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret)
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{
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switch(V_VT(v)) {
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case VT_EMPTY:
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case VT_NULL:
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case VT_BOOL:
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case VT_I4:
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case VT_R8:
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*ret = *v;
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break;
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case VT_BSTR:
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V_VT(ret) = VT_BSTR;
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V_BSTR(ret) = SysAllocString(V_BSTR(v));
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break;
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case VT_DISPATCH:
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return disp_propget(V_DISPATCH(v), DISPID_VALUE, ctx->lcid, ret, ei, NULL /*FIXME*/);
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default:
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FIXME("Unimplemented for vt %d\n", V_VT(v));
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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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/* ECMA-262 3rd Edition 9.2 */
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HRESULT to_boolean(VARIANT *v, VARIANT_BOOL *b)
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{
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switch(V_VT(v)) {
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case VT_EMPTY:
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case VT_NULL:
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*b = VARIANT_FALSE;
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break;
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case VT_I4:
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*b = V_I4(v) ? VARIANT_TRUE : VARIANT_FALSE;
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break;
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case VT_R8:
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*b = V_R8(v) ? VARIANT_TRUE : VARIANT_FALSE;
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break;
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case VT_BSTR:
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*b = V_BSTR(v) && *V_BSTR(v) ? VARIANT_TRUE : VARIANT_FALSE;
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break;
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case VT_DISPATCH:
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*b = V_DISPATCH(v) ? VARIANT_TRUE : VARIANT_FALSE;
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break;
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case VT_BOOL:
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*b = V_BOOL(v);
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break;
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default:
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FIXME("unimplemented for vt %d\n", V_VT(v));
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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 int hex_to_int(WCHAR c)
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{
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if('0' <= c && c <= '9')
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return c-'0';
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if('a' <= c && c <= 'f')
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return c-'a'+10;
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if('A' <= c && c <= 'F')
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return c-'A'+10;
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return -1;
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}
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/* ECMA-262 3rd Edition 9.3.1 */
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static HRESULT str_to_number(BSTR str, VARIANT *ret)
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{
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const WCHAR *ptr = str;
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BOOL neg = FALSE;
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DOUBLE d = 0.0;
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static const WCHAR infinityW[] = {'I','n','f','i','n','i','t','y'};
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while(isspaceW(*ptr))
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ptr++;
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if(!strncmpW(ptr, infinityW, sizeof(infinityW)/sizeof(WCHAR))) {
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ptr += sizeof(infinityW)/sizeof(WCHAR);
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while(*ptr && isspaceW(*ptr))
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ptr++;
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if(*ptr) {
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FIXME("NaN\n");
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return E_NOTIMPL;
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}
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FIXME("inf\n");
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return E_NOTIMPL;
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}
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if(*ptr == '-') {
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neg = TRUE;
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ptr++;
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}else if(*ptr == '+') {
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ptr++;
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}else if(*ptr == '0' && ptr[1] == 'x') {
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DWORD l = 0;
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ptr += 2;
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while((l = hex_to_int(*ptr)) != -1) {
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d = d*16 + l;
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ptr++;
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}
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num_set_val(ret, d);
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return S_OK;
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}
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while(isdigitW(*ptr))
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d = d*10 + (*ptr++ - '0');
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if(*ptr == 'e' || *ptr == 'E') {
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BOOL eneg = FALSE;
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LONG l = 0;
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ptr++;
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if(*ptr == '-') {
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ptr++;
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eneg = TRUE;
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}else if(*ptr == '+') {
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ptr++;
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}
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while(isdigitW(*ptr))
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l = l*10 + (*ptr++ - '0');
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if(eneg)
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l = -l;
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d *= pow(10, l);
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}else if(*ptr == '.') {
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DOUBLE dec = 0.1;
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ptr++;
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while(isdigitW(*ptr)) {
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d += dec * (*ptr++ - '0');
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dec *= 0.1;
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}
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}
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while(isspaceW(*ptr))
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ptr++;
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if(*ptr) {
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FIXME("NaN\n");
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return E_NOTIMPL;
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}
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if(neg)
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d = -d;
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num_set_val(ret, d);
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return S_OK;
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}
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/* ECMA-262 3rd Edition 9.3 */
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HRESULT to_number(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret)
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{
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switch(V_VT(v)) {
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case VT_NULL:
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V_VT(ret) = VT_I4;
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V_I4(ret) = 0;
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break;
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case VT_I4:
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case VT_R8:
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*ret = *v;
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break;
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case VT_BSTR:
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return str_to_number(V_BSTR(v), ret);
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case VT_BOOL:
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V_VT(ret) = VT_I4;
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V_I4(ret) = V_BOOL(v) ? 1 : 0;
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break;
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default:
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FIXME("unimplemented for vt %d\n", V_VT(v));
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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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/* ECMA-262 3rd Edition 9.4 */
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HRESULT to_integer(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, VARIANT *ret)
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{
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VARIANT num;
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HRESULT hres;
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hres = to_number(ctx, v, ei, &num);
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if(FAILED(hres))
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return hres;
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if(V_VT(&num) == VT_I4)
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*ret = num;
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else
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num_set_val(ret, V_R8(&num) >= 0.0 ? floor(V_R8(&num)) : -floor(-V_R8(&num)));
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return S_OK;
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}
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/* ECMA-262 3rd Edition 9.5 */
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HRESULT to_int32(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, INT *ret)
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{
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VARIANT num;
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HRESULT hres;
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hres = to_number(ctx, v, ei, &num);
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if(FAILED(hres))
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return hres;
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*ret = V_VT(&num) == VT_I4 ? V_I4(&num) : (INT)V_R8(&num);
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return S_OK;
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}
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/* ECMA-262 3rd Edition 9.6 */
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HRESULT to_uint32(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, DWORD *ret)
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{
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VARIANT num;
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HRESULT hres;
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hres = to_number(ctx, v, ei, &num);
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if(FAILED(hres))
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return hres;
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*ret = V_VT(&num) == VT_I4 ? V_I4(&num) : (DWORD)V_R8(&num);
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return S_OK;
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}
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static BSTR int_to_bstr(INT i)
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{
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WCHAR buf[12], *p;
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BOOL neg = FALSE;
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if(!i) {
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static const WCHAR zeroW[] = {'0',0};
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return SysAllocString(zeroW);
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}
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if(i < 0) {
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neg = TRUE;
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i = -i;
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}
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p = buf + sizeof(buf)/sizeof(*buf)-1;
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*p-- = 0;
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while(i) {
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*p-- = i%10 + '0';
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i /= 10;
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}
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if(neg)
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*p = '-';
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else
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p++;
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return SysAllocString(p);
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}
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/* ECMA-262 3rd Edition 9.8 */
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HRESULT to_string(script_ctx_t *ctx, VARIANT *v, jsexcept_t *ei, BSTR *str)
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{
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const WCHAR undefinedW[] = {'u','n','d','e','f','i','n','e','d',0};
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const WCHAR nullW[] = {'n','u','l','l',0};
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const WCHAR trueW[] = {'t','r','u','e',0};
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const WCHAR falseW[] = {'f','a','l','s','e',0};
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switch(V_VT(v)) {
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case VT_EMPTY:
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*str = SysAllocString(undefinedW);
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break;
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case VT_NULL:
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*str = SysAllocString(nullW);
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break;
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case VT_I4:
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*str = int_to_bstr(V_I4(v));
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break;
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case VT_BSTR:
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*str = SysAllocString(V_BSTR(v));
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break;
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case VT_DISPATCH: {
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VARIANT prim;
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HRESULT hres;
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hres = to_primitive(ctx, v, ei, &prim);
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if(FAILED(hres))
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return hres;
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hres = to_string(ctx, &prim, ei, str);
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VariantClear(&prim);
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return hres;
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}
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case VT_BOOL:
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*str = SysAllocString(V_BOOL(v) ? trueW : falseW);
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break;
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default:
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FIXME("unsupported vt %d\n", V_VT(v));
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return E_NOTIMPL;
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}
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return *str ? S_OK : E_OUTOFMEMORY;
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}
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/* ECMA-262 3rd Edition 9.9 */
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HRESULT to_object(exec_ctx_t *ctx, VARIANT *v, IDispatch **disp)
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{
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DispatchEx *dispex;
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HRESULT hres;
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switch(V_VT(v)) {
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case VT_BSTR:
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hres = create_string(ctx->parser->script, V_BSTR(v), SysStringLen(V_BSTR(v)), &dispex);
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if(FAILED(hres))
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return hres;
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*disp = (IDispatch*)_IDispatchEx_(dispex);
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break;
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case VT_I4:
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case VT_R8:
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hres = create_number(ctx->parser->script, v, &dispex);
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if(FAILED(hres))
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return hres;
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*disp = (IDispatch*)_IDispatchEx_(dispex);
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break;
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case VT_DISPATCH:
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IDispatch_AddRef(V_DISPATCH(v));
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*disp = V_DISPATCH(v);
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break;
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case VT_BOOL:
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hres = create_bool(ctx->parser->script, V_BOOL(v), &dispex);
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if(FAILED(hres))
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return hres;
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*disp = (IDispatch*)_IDispatchEx_(dispex);
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break;
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default:
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FIXME("unsupported vt %d\n", V_VT(v));
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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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