forked from len0rd/rockbox
c6fcb1cf45
Allows saving of ram by reusing strings already stored in the binary
and storing a pointer instead of malloc and copy to get them inside
the lua state
Saves about 1.5K overall
Derivative of work by bogdanm
RAM optimizations: pseudo RO strings, functions in Flash
d54659b572
Change-Id: I21d6dcfa32523877efd9f70fb0f88f2a02872649
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/*
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** $Id$
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** String table (keep all strings handled by Lua)
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** See Copyright Notice in lua.h
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*/
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#ifndef lstring_h
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#define lstring_h
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#include "lgc.h"
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#include "lobject.h"
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#include "lstate.h"
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/* ROCKLUA ADDED */
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#define TSTR_INBLOB 0 /* string will be allocated at end of tstring struct */
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#define TSTR_INBIN 1 /* string is static within binary, pointer stored */
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#define TSTR_FIXED 2 /* string won't be collected for duration of L state */
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#define TSTR_CHKSZ 4 /* luaS_newllocstr shall determine size of string */
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#define TSTR_ISLIT 8 | TSTR_INBIN /* literal string static within binary */
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#define sizetstring(t, l) (sizeof(union TString) + (testbits((t), TSTR_INBIN) ? \
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sizeof(const char **) : ((l)+1)*sizeof(char)))
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#define sizeudata(u) (sizeof(union Udata)+(u)->len)
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#define luaS_new(L, s) (luaS_newllocstr(L, s, 0, TSTR_INBLOB | TSTR_CHKSZ))
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#define luaS_newlstr(L, s, len) (luaS_newllocstr(L, s, len, TSTR_INBLOB))
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#define luaS_newlloc(L, s, t) (luaS_newllocstr(L, s, 0, ((t) | TSTR_CHKSZ)))
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#define luaS_newliteral(L, s) (luaS_newllocstr(L, "" s, \
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(sizeof(s)/sizeof(char))-1, TSTR_ISLIT))
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#define luaS_fix(s) l_setbit((s)->tsv.marked, FIXEDBIT)
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LUAI_FUNC void luaS_resize (lua_State *L, int newsize);
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LUAI_FUNC Udata *luaS_newudata (lua_State *L, size_t s, Table *e);
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/* ROCKLUA ADDED */
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LUAI_FUNC TString *luaS_newllocstr (lua_State *L,
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const char *str, size_t l, char type);
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#endif
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