CHDK_DE Vorschauversion  Trunk Rev. 5163
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lobject.c-Dateireferenz
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lua.h"
#include "ldo.h"
#include "lmem.h"
#include "lobject.h"
#include "lstate.h"
#include "lstring.h"
#include "lvm.h"
+ Include-Abhängigkeitsdiagramm für lobject.c:

gehe zum Quellcode dieser Datei

Makrodefinitionen

#define lobject_c
 
#define LUA_CORE
 

Funktionen

LUAI_FUNC int luaO_int2fb (unsigned int x)
 
LUAI_FUNC int luaO_fb2int (int x)
 
LUAI_FUNC int luaO_log2 (unsigned int x)
 
LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2)
 
LUAI_FUNC int luaO_str2d (const char *s, lua_Number *result)
 
static void pushstr (lua_State *L, const char *str)
 
LUAI_FUNC const char * luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp)
 
LUAI_FUNC const char * luaO_pushfstring (lua_State *L, const char *fmt,...)
 
LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t bufflen)
 

Variablen

const TValue luaO_nilobject_ = {{NULL}, LUA_TNIL}
 

Makro-Dokumentation

#define lobject_c

Definiert in Zeile 13 der Datei lobject.c.

#define LUA_CORE

Definiert in Zeile 14 der Datei lobject.c.

Dokumentation der Funktionen

LUAI_FUNC void luaO_chunkid ( char *  out,
const char *  source,
size_t  bufflen 
)

Definiert in Zeile 182 der Datei lobject.c.

182  {
183  if (*source == '=') {
184  strncpy(out, source+1, bufflen); /* remove first char */
185  out[bufflen-1] = '\0'; /* ensures null termination */
186  }
187  else { /* out = "source", or "...source" */
188  if (*source == '@') {
189  size_t l;
190  source++; /* skip the `@' */
191  bufflen -= sizeof(" '...' ");
192  l = strlen(source);
193  strcpy(out, "");
194  if (l > bufflen) {
195  source += (l-bufflen); /* get last part of file name */
196  strcat(out, "...");
197  }
198  strcat(out, source);
199  }
200  else { /* out = [string "string"] */
201  strcpy(out,"");
202 #if 0
203  size_t len = strcspn(source, "\n\r"); /* stop at first newline */
204  bufflen -= sizeof(" [string \"...\"] ");
205  if (len > bufflen) len = bufflen;
206  strcpy(out, "[string \"");
207  if (source[len] != '\0') { /* must truncate? */
208  strncat(out, source, len);
209  strcat(out, "...");
210  }
211  else
212  strcat(out, source);
213  strcat(out, "\"]");
214 #endif
215  }
216  }
217 }
LUAI_FUNC int luaO_fb2int ( int  x)

Definiert in Zeile 47 der Datei lobject.c.

47  {
48  int e = (x >> 3) & 31;
49  if (e == 0) return x;
50  else return ((x & 7)+8) << (e - 1);
51 }
LUAI_FUNC int luaO_int2fb ( unsigned int  x)

Definiert in Zeile 35 der Datei lobject.c.

35  {
36  int e = 0; /* expoent */
37  while (x >= 16) {
38  x = (x+1) >> 1;
39  e++;
40  }
41  if (x < 8) return x;
42  else return ((e+1) << 3) | (cast_int(x) - 8);
43 }
LUAI_FUNC int luaO_log2 ( unsigned int  x)

Definiert in Zeile 54 der Datei lobject.c.

54  {
55  static const lu_byte log_2[256] = {
56  0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
57  6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
58  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
59  7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
60  8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
61  8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
62  8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
63  8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
64  };
65  int l = -1;
66  while (x >= 256) { l += 8; x >>= 8; }
67  return l + log_2[x];
68 
69 }
LUAI_FUNC const char* luaO_pushfstring ( lua_State L,
const char *  fmt,
  ... 
)

Definiert in Zeile 172 der Datei lobject.c.

172  {
173  const char *msg;
174  va_list argp;
175  va_start(argp, fmt);
176  msg = luaO_pushvfstring(L, fmt, argp);
177  va_end(argp);
178  return msg;
179 }
LUAI_FUNC const char* luaO_pushvfstring ( lua_State L,
const char *  fmt,
va_list  argp 
)

Definiert in Zeile 111 der Datei lobject.c.

111  {
112  int n = 1;
113  pushstr(L, "");
114  for (;;) {
115  const char *e = strchr(fmt, '%');
116  if (e == NULL) break;
117  setsvalue2s(L, L->top, luaS_newlstr(L, fmt, e-fmt));
118  incr_top(L);
119  switch (*(e+1)) {
120  case 's': {
121  const char *s = va_arg(argp, char *);
122  if (s == NULL) s = "(null)";
123  pushstr(L, s);
124  break;
125  }
126  case 'c': {
127  char buff[2];
128  buff[0] = cast(char, va_arg(argp, int));
129  buff[1] = '\0';
130  pushstr(L, buff);
131  break;
132  }
133  case 'd': {
134  setnvalue(L->top, cast_num(va_arg(argp, int)));
135  incr_top(L);
136  break;
137  }
138  case 'f': {
139  setnvalue(L->top, cast_num(va_arg(argp, l_uacNumber)));
140  incr_top(L);
141  break;
142  }
143  case 'p': {
144  char buff[4*sizeof(void *) + 8]; /* should be enough space for a `%p' */
145  sprintf(buff, "%p", va_arg(argp, void *));
146  pushstr(L, buff);
147  break;
148  }
149  case '%': {
150  pushstr(L, "%");
151  break;
152  }
153  default: {
154  char buff[3];
155  buff[0] = '%';
156  buff[1] = *(e+1);
157  buff[2] = '\0';
158  pushstr(L, buff);
159  break;
160  }
161  }
162  n += 2;
163  fmt = e+2;
164  }
165  pushstr(L, fmt);
166  luaV_concat(L, n+1, cast_int(L->top - L->base) - 1);
167  L->top -= n;
168  return svalue(L->top - 1);
169 }
LUAI_FUNC int luaO_rawequalObj ( const TValue t1,
const TValue t2 
)

Definiert in Zeile 72 der Datei lobject.c.

72  {
73  if (ttype(t1) != ttype(t2)) return 0;
74  else switch (ttype(t1)) {
75  case LUA_TNIL:
76  return 1;
77  case LUA_TNUMBER:
78  return luai_numeq(nvalue(t1), nvalue(t2));
79  case LUA_TBOOLEAN:
80  return bvalue(t1) == bvalue(t2); /* boolean true must be 1 !! */
81  case LUA_TLIGHTUSERDATA:
82  return pvalue(t1) == pvalue(t2);
83  default:
85  return gcvalue(t1) == gcvalue(t2);
86  }
87 }
LUAI_FUNC int luaO_str2d ( const char *  s,
lua_Number result 
)

Definiert in Zeile 90 der Datei lobject.c.

90  {
91  char *endptr;
92  *result = lua_str2number(s, &endptr);
93  if (endptr == s) return 0; /* conversion failed */
94  if (*endptr == 'x' || *endptr == 'X') /* maybe an hexadecimal constant? */
95  *result = cast_num(strtoul(s, &endptr, 16));
96  if (*endptr == '\0') return 1; /* most common case */
97  while (isspace(cast(unsigned char, *endptr))) endptr++;
98  if (*endptr != '\0') return 0; /* invalid trailing characters? */
99  return 1;
100 }
static void pushstr ( lua_State L,
const char *  str 
)
static

Definiert in Zeile 104 der Datei lobject.c.

104  {
105  setsvalue2s(L, L->top, luaS_new(L, str));
106  incr_top(L);
107 }

Variablen-Dokumentation

const TValue luaO_nilobject_ = {{NULL}, LUA_TNIL}

Definiert in Zeile 27 der Datei lobject.c.