26 lines
533 B
C
26 lines
533 B
C
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#include "factor.h"
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HANDLE* untag_handle(CELL tagged)
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{
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HANDLE* h;
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type_check(HANDLE_TYPE,tagged);
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h = (HANDLE*)UNTAG(tagged);
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/* after image load & save, handles are no longer valid */
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if(h->object == 0)
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general_error(ERROR_HANDLE_EXPIRED,tagged);
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return h;
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}
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CELL handle(CELL object)
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{
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HANDLE* handle = (HANDLE*)allot_object(HANDLE_TYPE,sizeof(HANDLE));
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handle->object = object;
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return tag_object(handle);
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}
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void primitive_handlep(void)
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{
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check_non_empty(env.dt);
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env.dt = tag_boolean(typep(HANDLE_TYPE,env.dt));
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}
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