/
ldump.c
173 lines (153 loc) · 3.15 KB
/
ldump.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
/*
** $Id: ldump.c,v 2.17.1.1 2013/04/12 18:48:47 roberto Exp $
** save precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#include <stddef.h>
#define ldump_c
#define LUA_CORE
#include "lua.h"
#include "lobject.h"
#include "lstate.h"
#include "lundump.h"
typedef struct {
lua_State* L;
lua_Writer writer;
void* data;
int strip;
int status;
} DumpState;
#define DumpMem(b,n,size,D) DumpBlock(b,(n)*(size),D)
#define DumpVar(x,D) DumpMem(&x,1,sizeof(x),D)
static void DumpBlock(const void* b, size_t size, DumpState* D)
{
if (D->status==0)
{
lua_unlock(D->L);
D->status=(*D->writer)(D->L,b,size,D->data);
lua_lock(D->L);
}
}
static void DumpChar(int y, DumpState* D)
{
char x=(char)y;
DumpVar(x,D);
}
static void DumpInt(int x, DumpState* D)
{
DumpVar(x,D);
}
static void DumpNumber(lua_Number x, DumpState* D)
{
DumpVar(x,D);
}
static void DumpVector(const void* b, int n, size_t size, DumpState* D)
{
DumpInt(n,D);
DumpMem(b,n,size,D);
}
static void DumpString(const TString* s, DumpState* D)
{
if (s==NULL)
{
size_t size=0;
DumpVar(size,D);
}
else
{
size_t size=s->tsv.len+1; /* include trailing '\0' */
DumpVar(size,D);
DumpBlock(getstr(s),size*sizeof(char),D);
}
}
#define DumpCode(f,D) DumpVector(f->code,f->sizecode,sizeof(Instruction),D)
static void DumpFunction(const Proto* f, DumpState* D);
static void DumpConstants(const Proto* f, DumpState* D)
{
int i,n=f->sizek;
DumpInt(n,D);
for (i=0; i<n; i++)
{
const TValue* o=&f->k[i];
DumpChar(ttypenv(o),D);
switch (ttypenv(o))
{
case LUA_TNIL:
break;
case LUA_TBOOLEAN:
DumpChar(bvalue(o),D);
break;
case LUA_TNUMBER:
DumpNumber(nvalue(o),D);
break;
case LUA_TSTRING:
DumpString(rawtsvalue(o),D);
break;
default: lua_assert(0);
}
}
n=f->sizep;
DumpInt(n,D);
for (i=0; i<n; i++) DumpFunction(f->p[i],D);
}
static void DumpUpvalues(const Proto* f, DumpState* D)
{
int i,n=f->sizeupvalues;
DumpInt(n,D);
for (i=0; i<n; i++)
{
DumpChar(f->upvalues[i].instack,D);
DumpChar(f->upvalues[i].idx,D);
}
}
static void DumpDebug(const Proto* f, DumpState* D)
{
int i,n;
DumpString((D->strip) ? NULL : f->source,D);
n= (D->strip) ? 0 : f->sizelineinfo;
DumpVector(f->lineinfo,n,sizeof(int),D);
n= (D->strip) ? 0 : f->sizelocvars;
DumpInt(n,D);
for (i=0; i<n; i++)
{
DumpString(f->locvars[i].varname,D);
DumpInt(f->locvars[i].startpc,D);
DumpInt(f->locvars[i].endpc,D);
}
n= (D->strip) ? 0 : f->sizeupvalues;
DumpInt(n,D);
for (i=0; i<n; i++) DumpString(f->upvalues[i].name,D);
}
static void DumpFunction(const Proto* f, DumpState* D)
{
DumpInt(f->linedefined,D);
DumpInt(f->lastlinedefined,D);
DumpChar(f->numparams,D);
DumpChar(f->is_vararg,D);
DumpChar(f->maxstacksize,D);
DumpCode(f,D);
DumpConstants(f,D);
DumpUpvalues(f,D);
DumpDebug(f,D);
}
static void DumpHeader(DumpState* D)
{
lu_byte h[LUAC_HEADERSIZE];
luaU_header(h);
DumpBlock(h,LUAC_HEADERSIZE,D);
}
/*
** dump Lua function as precompiled chunk
*/
int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip)
{
DumpState D;
D.L=L;
D.writer=w;
D.data=data;
D.strip=strip;
D.status=0;
DumpHeader(&D);
DumpFunction(f,&D);
return D.status;
}