146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/*
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* $Id: object.c,v 1.25 2005-06-08 16:11:18 bacon Exp $
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*/
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#include <xp/stx/object.h>
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#include <xp/stx/memory.h>
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#include <xp/stx/symbol.h>
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#include <xp/stx/hash.h>
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#include <xp/stx/misc.h>
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/* n: number of instance variables */
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xp_word_t xp_stx_alloc_word_object (xp_stx_t* stx, xp_word_t n)
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{
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xp_word_t idx;
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xp_stx_word_object_t* obj;
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/* bytes to allocidxed =
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* number of instance variables * word_size
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*/
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idx = xp_stx_memory_alloc (&stx->memory,
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n * xp_sizeof(xp_word_t) + xp_sizeof(xp_stx_object_t));
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if (idx >= stx->memory.capacity) return idx; /* failed */
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xp_assert (stx->nil == XP_STX_NIL);
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/*
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XP_STX_CLASS(stx,idx) = stx->nil;
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XP_STX_ACCESS(stx,idx) = (n << 2) | XP_STX_WORD_INDEXED;
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while (n-- > 0) XP_STX_AT(stx,idx,n) = stx->nil;
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*/
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obj = XP_STX_WORD_OBJECT(stx,idx);
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obj->header.class = stx->nil;
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obj->header.access = (n << 2) | XP_STX_WORD_INDEXED;
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while (n-- > 0) obj->data[n] = stx->nil;
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return idx;
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}
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/* n: number of bytes */
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xp_word_t xp_stx_alloc_byte_object (xp_stx_t* stx, xp_word_t n)
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{
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xp_word_t idx;
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xp_stx_byte_object_t* obj;
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idx = xp_stx_memory_alloc (
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&stx->memory, n + xp_sizeof(xp_stx_object_t));
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if (idx >= stx->memory.capacity) return idx; /* failed */
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xp_assert (stx->nil == XP_STX_NIL);
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/*
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XP_STX_CLASS(stx,idx) = stx->nil;
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XP_STX_ACCESS(stx,idx) = (n << 2) | XP_STX_BYTE_INDEXED;
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while (n-- > 0) XP_STX_BYTEAT(stx,idx,n) = 0;
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*/
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obj = XP_STX_BYTE_OBJECT(stx,idx);
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obj->header.class = stx->nil;
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obj->header.access = (n << 2) | XP_STX_BYTE_INDEXED;
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while (n-- > 0) obj->data[n] = 0;
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return idx;
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}
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xp_word_t xp_stx_alloc_char_object (
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xp_stx_t* stx, const xp_char_t* str)
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{
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return xp_stx_alloc_char_objectx (stx, str, xp_strlen(str));
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}
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xp_word_t xp_stx_alloc_char_objectx (
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xp_stx_t* stx, const xp_char_t* str, xp_word_t n)
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{
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xp_word_t idx;
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xp_stx_char_object_t* obj;
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idx = xp_stx_memory_alloc (&stx->memory,
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(n + 1) * xp_sizeof(xp_char_t) + xp_sizeof(xp_stx_object_t));
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if (idx >= stx->memory.capacity) return idx; /* failed */
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xp_assert (stx->nil == XP_STX_NIL);
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/*
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XP_STX_CLASS(stx,idx) = stx->nil;
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XP_STX_ACCESS(stx,idx) = (n << 2) | XP_CHAR_INDEXED;
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XP_STX_CHARAT(stx,idx,n) = XP_CHAR('\0');
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while (n-- > 0) XP_STX_CHARAT(stx,idx,n) = str[n];
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*/
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obj = XP_CHAR_OBJECT(stx,idx);
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obj->header.class = stx->nil;
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obj->header.access = (n << 2) | XP_CHAR_INDEXED;
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obj->data[n] = XP_CHAR('\0');
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while (n-- > 0) obj->data[n] = str[n];
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return idx;
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}
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xp_word_t xp_stx_allocn_char_object (xp_stx_t* stx, ...)
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{
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xp_word_t idx, n = 0;
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const xp_char_t* p;
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xp_va_list ap;
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xp_stx_char_object_t* obj;
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xp_va_start (ap, stx);
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while ((p = xp_va_arg(ap, const xp_char_t*)) != XP_NULL) {
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n += xp_strlen(p);
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}
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xp_va_end (ap);
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idx = xp_stx_memory_alloc (&stx->memory,
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(n + 1) * xp_sizeof(xp_char_t) + xp_sizeof(xp_stx_object_t));
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if (idx >= stx->memory.capacity) return idx; /* failed */
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xp_assert (stx->nil == XP_STX_NIL);
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/*
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XP_STX_CLASS(stx,idx) = stx->nil;
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XP_STX_ACCESS(stx,idx) = (n << 2) | XP_CHAR_INDEXED;
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XP_STX_CHARAT(stx,idx,n) = XP_CHAR('\0');
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*/
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obj = XP_CHAR_OBJECT(stx,idx);
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obj->header.class = stx->nil;
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obj->header.access = (n << 2) | XP_CHAR_INDEXED;
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obj->data[n] = XP_CHAR('\0');
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xp_va_start (ap, stx);
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n = 0;
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while ((p = xp_va_arg(ap, const xp_char_t*)) != XP_NULL) {
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while (*p != XP_CHAR('\0')) {
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/*XP_STX_CHARAT(stx,idx,n++) = *p++;*/
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obj->data[n++] = *p++;
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}
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}
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xp_va_end (ap);
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return idx;
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}
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xp_word_t xp_stx_hash_char_object (xp_stx_t* stx, xp_word_t idx)
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{
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xp_assert (XP_STX_TYPE(stx,idx) == XP_CHAR_INDEXED);
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return xp_stx_strxhash (
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XP_STX_DATA(stx,idx), XP_STX_SIZE(stx,idx));
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}
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