41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
// vim:fileencoding=utf-8:foldmethod=marker
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#include "stream.h"
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#include "../../common/aliases/aliases.h"
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#include "../../common/assert/assert.h"
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void _streamValidate(const WpStream *stream, u64 item_size);
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b8 _streamAtEnd(const WpStream *stream, u64 item_size) {
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_streamValidate(stream, item_size);
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return stream->position >= stream->count;
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}
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b8 _streamHasNext(const WpStream *stream, u64 item_size) {
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_streamValidate(stream, item_size);
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return stream->position + 1 < stream->count;
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}
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void *_streamPeek(const WpStream *stream, u64 item_size) {
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if (_streamHasNext(stream, item_size)) {
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u64 index = (stream->position + 1) * stream->item_size;
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return (void *)(&((u8 *)(stream->data))[index]);
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}
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return NULL;
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}
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void *_streamConsume(WpStream *stream, u64 item_size) {
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if (!_streamAtEnd(stream, item_size)) {
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u64 index = stream->position++ * stream->item_size;
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return (void *)(&((u8 *)(stream->data))[index]);
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}
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return NULL;
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}
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void _streamValidate(const WpStream *stream, u64 item_size) {
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wpDebugAssert(stream != NULL, "`stream` should not be NULL");
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wpRuntimeAssert(stream->item_size == item_size, "Invalid item type provided");
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}
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