59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* $Id: object.c,v 1.2 2005-05-08 07:39:51 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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/* n: number of instance variables */
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xp_stx_word_t xp_stx_alloc_object (xp_stx_t* stx, xp_size_t n)
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{
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xp_stx_word_t at;
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/* bytes to allocated =
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* number of instance variables * word_size
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*/
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at = xp_stx_alloc_objmem (
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&stx->memory, n * xp_sizeof(xp_stx_word_t));
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if (at >= stx->memory.capacity) return at; /* failed */
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XP_STX_OBJECT_CLASS(&stx->memory,at) = stx->nil;
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XP_STX_OBJECT_ACCESS(&stx->memory,at) = ((n << 2) | 0x00);
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while (n--) XP_STX_OBJECT(&stx->memory,at)->data[n] = stx->nil;
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return at;
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}
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/* n: number of bytes */
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xp_stx_word_t xp_stx_alloc_byte_object (xp_stx_t* stx, xp_size_t n)
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{
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xp_stx_word_t at;
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at = xp_stx_alloc_objmem (&stx->memory, n);
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if (at >= stx->memory.capacity) return at; /* failed */
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XP_STX_OBJECT_CLASS(&stx->memory,at) = stx->nil;
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XP_STX_OBJECT_ACCESS(&stx->memory,at) = ((n << 2) | 0x01);
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while (n--) XP_STX_BYTE_OBJECT(&stx->memory,at)->data[n] = 0;
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return at;
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}
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/* n: length of the string */
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xp_stx_word_t xp_stx_alloc_string_object (
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xp_stx_t* stx, xp_stx_char_t* str, xp_stx_word_t n)
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{
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xp_stx_word_t at;
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at = xp_stx_alloc_objmem (
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&stx->memory, (n + 1) * xp_sizeof(xp_stx_char_t));
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if (at >= stx->memory.capacity) return at; /* failed */
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XP_STX_OBJECT_CLASS(&stx->memory,at) = stx->nil;
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XP_STX_OBJECT_ACCESS(&stx->memory,at) = ((n << 2) | 0x02);
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XP_STX_BYTE_OBJECT(&stx->memory,at)->data[n] = XP_STX_CHAR('\0');
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while (n--) XP_STX_BYTE_OBJECT(&stx->memory,at)->data[n] = str[n];
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return at;
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}
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