OLD | NEW |
(Empty) | |
| 1 /* |
| 2 ** $Id: ldump.c,v 2.17 2012/01/23 23:02:10 roberto Exp $ |
| 3 ** save precompiled Lua chunks |
| 4 ** See Copyright Notice in lua.h |
| 5 */ |
| 6 |
| 7 #include <stddef.h> |
| 8 |
| 9 #define ldump_c |
| 10 #define LUA_CORE |
| 11 |
| 12 #include "lua.h" |
| 13 |
| 14 #include "lobject.h" |
| 15 #include "lstate.h" |
| 16 #include "lundump.h" |
| 17 |
| 18 typedef struct { |
| 19 lua_State* L; |
| 20 lua_Writer writer; |
| 21 void* data; |
| 22 int strip; |
| 23 int status; |
| 24 } DumpState; |
| 25 |
| 26 #define DumpMem(b,n,size,D) DumpBlock(b,(n)*(size),D) |
| 27 #define DumpVar(x,D) DumpMem(&x,1,sizeof(x),D) |
| 28 |
| 29 static void DumpBlock(const void* b, size_t size, DumpState* D) |
| 30 { |
| 31 if (D->status==0) |
| 32 { |
| 33 lua_unlock(D->L); |
| 34 D->status=(*D->writer)(D->L,b,size,D->data); |
| 35 lua_lock(D->L); |
| 36 } |
| 37 } |
| 38 |
| 39 static void DumpChar(int y, DumpState* D) |
| 40 { |
| 41 char x=(char)y; |
| 42 DumpVar(x,D); |
| 43 } |
| 44 |
| 45 static void DumpInt(int x, DumpState* D) |
| 46 { |
| 47 DumpVar(x,D); |
| 48 } |
| 49 |
| 50 static void DumpNumber(lua_Number x, DumpState* D) |
| 51 { |
| 52 DumpVar(x,D); |
| 53 } |
| 54 |
| 55 static void DumpVector(const void* b, int n, size_t size, DumpState* D) |
| 56 { |
| 57 DumpInt(n,D); |
| 58 DumpMem(b,n,size,D); |
| 59 } |
| 60 |
| 61 static void DumpString(const TString* s, DumpState* D) |
| 62 { |
| 63 if (s==NULL) |
| 64 { |
| 65 size_t size=0; |
| 66 DumpVar(size,D); |
| 67 } |
| 68 else |
| 69 { |
| 70 size_t size=s->tsv.len+1; /* include trailing '\0' */ |
| 71 DumpVar(size,D); |
| 72 DumpBlock(getstr(s),size*sizeof(char),D); |
| 73 } |
| 74 } |
| 75 |
| 76 #define DumpCode(f,D) DumpVector(f->code,f->sizecode,sizeof(Instruction),D) |
| 77 |
| 78 static void DumpFunction(const Proto* f, DumpState* D); |
| 79 |
| 80 static void DumpConstants(const Proto* f, DumpState* D) |
| 81 { |
| 82 int i,n=f->sizek; |
| 83 DumpInt(n,D); |
| 84 for (i=0; i<n; i++) |
| 85 { |
| 86 const TValue* o=&f->k[i]; |
| 87 DumpChar(ttypenv(o),D); |
| 88 switch (ttypenv(o)) |
| 89 { |
| 90 case LUA_TNIL: |
| 91 break; |
| 92 case LUA_TBOOLEAN: |
| 93 DumpChar(bvalue(o),D); |
| 94 break; |
| 95 case LUA_TNUMBER: |
| 96 DumpNumber(nvalue(o),D); |
| 97 break; |
| 98 case LUA_TSTRING: |
| 99 DumpString(rawtsvalue(o),D); |
| 100 break; |
| 101 default: lua_assert(0); |
| 102 } |
| 103 } |
| 104 n=f->sizep; |
| 105 DumpInt(n,D); |
| 106 for (i=0; i<n; i++) DumpFunction(f->p[i],D); |
| 107 } |
| 108 |
| 109 static void DumpUpvalues(const Proto* f, DumpState* D) |
| 110 { |
| 111 int i,n=f->sizeupvalues; |
| 112 DumpInt(n,D); |
| 113 for (i=0; i<n; i++) |
| 114 { |
| 115 DumpChar(f->upvalues[i].instack,D); |
| 116 DumpChar(f->upvalues[i].idx,D); |
| 117 } |
| 118 } |
| 119 |
| 120 static void DumpDebug(const Proto* f, DumpState* D) |
| 121 { |
| 122 int i,n; |
| 123 DumpString((D->strip) ? NULL : f->source,D); |
| 124 n= (D->strip) ? 0 : f->sizelineinfo; |
| 125 DumpVector(f->lineinfo,n,sizeof(int),D); |
| 126 n= (D->strip) ? 0 : f->sizelocvars; |
| 127 DumpInt(n,D); |
| 128 for (i=0; i<n; i++) |
| 129 { |
| 130 DumpString(f->locvars[i].varname,D); |
| 131 DumpInt(f->locvars[i].startpc,D); |
| 132 DumpInt(f->locvars[i].endpc,D); |
| 133 } |
| 134 n= (D->strip) ? 0 : f->sizeupvalues; |
| 135 DumpInt(n,D); |
| 136 for (i=0; i<n; i++) DumpString(f->upvalues[i].name,D); |
| 137 } |
| 138 |
| 139 static void DumpFunction(const Proto* f, DumpState* D) |
| 140 { |
| 141 DumpInt(f->linedefined,D); |
| 142 DumpInt(f->lastlinedefined,D); |
| 143 DumpChar(f->numparams,D); |
| 144 DumpChar(f->is_vararg,D); |
| 145 DumpChar(f->maxstacksize,D); |
| 146 DumpCode(f,D); |
| 147 DumpConstants(f,D); |
| 148 DumpUpvalues(f,D); |
| 149 DumpDebug(f,D); |
| 150 } |
| 151 |
| 152 static void DumpHeader(DumpState* D) |
| 153 { |
| 154 lu_byte h[LUAC_HEADERSIZE]; |
| 155 luaU_header(h); |
| 156 DumpBlock(h,LUAC_HEADERSIZE,D); |
| 157 } |
| 158 |
| 159 /* |
| 160 ** dump Lua function as precompiled chunk |
| 161 */ |
| 162 int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip
) |
| 163 { |
| 164 DumpState D; |
| 165 D.L=L; |
| 166 D.writer=w; |
| 167 D.data=data; |
| 168 D.strip=strip; |
| 169 D.status=0; |
| 170 DumpHeader(&D); |
| 171 DumpFunction(f,&D); |
| 172 return D.status; |
| 173 } |
OLD | NEW |