128 lines
8.4 KiB
C
128 lines
8.4 KiB
C
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/* xdelta3 - delta compression tools and library
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Copyright 2016 Joshua MacDonald
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#ifndef __XDELTA3_LIST__
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#define __XDELTA3_LIST__
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#define XD3_MAKELIST(LTYPE,ETYPE,LNAME) \
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\
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static inline ETYPE* \
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LTYPE ## _entry (LTYPE* l) \
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{ \
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return (ETYPE*) ((char*) l - (ptrdiff_t) &((ETYPE*) 0)->LNAME); \
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} \
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\
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static inline void \
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LTYPE ## _init (LTYPE *l) \
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{ \
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l->next = l; \
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l->prev = l; \
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} \
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\
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static inline void \
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LTYPE ## _add (LTYPE *prev, LTYPE *next, LTYPE *ins) \
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{ \
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next->prev = ins; \
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prev->next = ins; \
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ins->next = next; \
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ins->prev = prev; \
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} \
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\
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static inline void \
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LTYPE ## _push_back (LTYPE *l, ETYPE *i) \
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{ \
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LTYPE ## _add (l->prev, l, & i->LNAME); \
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} \
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\
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static inline void \
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LTYPE ## _del (LTYPE *next, \
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LTYPE *prev) \
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{ \
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next->prev = prev; \
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prev->next = next; \
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} \
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\
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static inline ETYPE* \
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LTYPE ## _remove (ETYPE *f) \
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{ \
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LTYPE *i = f->LNAME.next; \
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LTYPE ## _del (f->LNAME.next, f->LNAME.prev); \
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return LTYPE ## _entry (i); \
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} \
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\
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static inline ETYPE* \
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LTYPE ## _pop_back (LTYPE *l) \
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{ \
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LTYPE *i = l->prev; \
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LTYPE ## _del (i->next, i->prev); \
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return LTYPE ## _entry (i); \
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} \
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\
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static inline ETYPE* \
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LTYPE ## _pop_front (LTYPE *l) \
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{ \
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LTYPE *i = l->next; \
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LTYPE ## _del (i->next, i->prev); \
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return LTYPE ## _entry (i); \
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} \
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\
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static inline int \
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LTYPE ## _empty (LTYPE *l) \
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{ \
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return l == l->next; \
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} \
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\
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static inline ETYPE* \
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LTYPE ## _front (LTYPE *f) \
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{ \
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return LTYPE ## _entry (f->next); \
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} \
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\
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static inline ETYPE* \
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LTYPE ## _back (LTYPE *f) \
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{ \
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return LTYPE ## _entry (f->prev); \
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} \
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\
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static inline int \
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LTYPE ## _end (LTYPE *f, ETYPE *i) \
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{ \
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return f == & i->LNAME; \
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} \
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\
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static inline ETYPE* \
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LTYPE ## _next (ETYPE *f) \
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{ \
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return LTYPE ## _entry (f->LNAME.next); \
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} \
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\
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static inline usize_t \
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LTYPE ## _length (LTYPE *l) \
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{ \
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LTYPE *p; \
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usize_t c = 0; \
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\
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for (p = l->next; p != l; p = p->next) \
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{ \
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c += 1; \
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} \
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\
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return c; \
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} \
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\
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typedef int unused_ ## LTYPE
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#endif
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