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annotate third_party/luajit/src/lj_load.c @ 279:b3b547563ec7

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Add Google connector service and agent wiki Implement the C/Seobeo Google Drive and Gmail connector with encrypted OAuth storage, Zenbu authentication, browser testing, AI tool discovery, chunked HTTP decoding, and Bazel coverage. Consolidate repository guidance into progressive wiki documentation and enforce arena-first allocation for new first-party C code. Co-authored-by: Copilot <[email protected]> Copilot-Session: 84c338fd-0939-4bb3-b7f3-1062eb213e5d
author MrJuneJune <me@mrjunejune.com>
date Mon, 17 Aug 2026 22:22:36 -0700
parents 94705b5986b3
children
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178
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1 /*
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2 ** Load and dump code.
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3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
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4 */
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5
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6 #include <errno.h>
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7 #include <stdio.h>
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8
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9 #define lj_load_c
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10 #define LUA_CORE
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11
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12 #include "lua.h"
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13 #include "lauxlib.h"
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14
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15 #include "lj_obj.h"
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16 #include "lj_gc.h"
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17 #include "lj_err.h"
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18 #include "lj_buf.h"
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19 #include "lj_func.h"
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20 #include "lj_frame.h"
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21 #include "lj_vm.h"
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22 #include "lj_lex.h"
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23 #include "lj_bcdump.h"
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24 #include "lj_parse.h"
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25
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26 /* -- Load Lua source code and bytecode ----------------------------------- */
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27
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28 static TValue *cpparser(lua_State *L, lua_CFunction dummy, void *ud)
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29 {
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30 LexState *ls = (LexState *)ud;
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31 GCproto *pt;
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32 GCfunc *fn;
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33 int bc;
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34 UNUSED(dummy);
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35 cframe_errfunc(L->cframe) = -1; /* Inherit error function. */
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36 bc = lj_lex_setup(L, ls);
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37 if (ls->mode && !strchr(ls->mode, bc ? 'b' : 't')) {
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38 setstrV(L, L->top++, lj_err_str(L, LJ_ERR_XMODE));
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39 lj_err_throw(L, LUA_ERRSYNTAX);
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40 }
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41 pt = bc ? lj_bcread(ls) : lj_parse(ls);
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42 fn = lj_func_newL_empty(L, pt, tabref(L->env));
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43 /* Don't combine above/below into one statement. */
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44 setfuncV(L, L->top++, fn);
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45 return NULL;
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46 }
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47
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48 LUA_API int lua_loadx(lua_State *L, lua_Reader reader, void *data,
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49 const char *chunkname, const char *mode)
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50 {
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51 LexState ls;
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52 int status;
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53 ls.rfunc = reader;
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54 ls.rdata = data;
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55 ls.chunkarg = chunkname ? chunkname : "?";
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56 ls.mode = mode;
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57 lj_buf_init(L, &ls.sb);
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58 status = lj_vm_cpcall(L, NULL, &ls, cpparser);
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59 lj_lex_cleanup(L, &ls);
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60 lj_gc_check(L);
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61 return status;
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62 }
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63
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64 LUA_API int lua_load(lua_State *L, lua_Reader reader, void *data,
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65 const char *chunkname)
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66 {
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67 return lua_loadx(L, reader, data, chunkname, NULL);
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68 }
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69
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70 typedef struct FileReaderCtx {
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71 FILE *fp;
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72 char buf[LUAL_BUFFERSIZE];
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73 } FileReaderCtx;
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74
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75 static const char *reader_file(lua_State *L, void *ud, size_t *size)
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76 {
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77 FileReaderCtx *ctx = (FileReaderCtx *)ud;
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78 UNUSED(L);
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79 if (feof(ctx->fp)) return NULL;
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80 *size = fread(ctx->buf, 1, sizeof(ctx->buf), ctx->fp);
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81 return *size > 0 ? ctx->buf : NULL;
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82 }
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83
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84 LUALIB_API int luaL_loadfilex(lua_State *L, const char *filename,
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85 const char *mode)
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86 {
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87 FileReaderCtx ctx;
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88 int status;
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89 const char *chunkname;
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90 if (filename) {
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91 ctx.fp = fopen(filename, "rb");
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92 if (ctx.fp == NULL) {
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93 lua_pushfstring(L, "cannot open %s: %s", filename, strerror(errno));
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94 return LUA_ERRFILE;
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95 }
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96 chunkname = lua_pushfstring(L, "@%s", filename);
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97 } else {
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98 ctx.fp = stdin;
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99 chunkname = "=stdin";
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100 }
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101 status = lua_loadx(L, reader_file, &ctx, chunkname, mode);
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102 if (ferror(ctx.fp)) {
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103 L->top -= filename ? 2 : 1;
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104 lua_pushfstring(L, "cannot read %s: %s", chunkname+1, strerror(errno));
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105 if (filename)
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106 fclose(ctx.fp);
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107 return LUA_ERRFILE;
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108 }
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109 if (filename) {
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110 L->top--;
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111 copyTV(L, L->top-1, L->top);
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112 fclose(ctx.fp);
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113 }
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114 return status;
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115 }
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116
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117 LUALIB_API int luaL_loadfile(lua_State *L, const char *filename)
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118 {
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119 return luaL_loadfilex(L, filename, NULL);
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120 }
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121
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122 typedef struct StringReaderCtx {
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123 const char *str;
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124 size_t size;
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125 } StringReaderCtx;
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126
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127 static const char *reader_string(lua_State *L, void *ud, size_t *size)
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128 {
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129 StringReaderCtx *ctx = (StringReaderCtx *)ud;
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130 UNUSED(L);
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131 if (ctx->size == 0) return NULL;
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132 *size = ctx->size;
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133 ctx->size = 0;
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134 return ctx->str;
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135 }
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136
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137 LUALIB_API int luaL_loadbufferx(lua_State *L, const char *buf, size_t size,
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138 const char *name, const char *mode)
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139 {
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140 StringReaderCtx ctx;
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141 ctx.str = buf;
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142 ctx.size = size;
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143 return lua_loadx(L, reader_string, &ctx, name, mode);
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144 }
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145
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146 LUALIB_API int luaL_loadbuffer(lua_State *L, const char *buf, size_t size,
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147 const char *name)
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148 {
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149 return luaL_loadbufferx(L, buf, size, name, NULL);
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150 }
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151
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152 LUALIB_API int luaL_loadstring(lua_State *L, const char *s)
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153 {
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154 return luaL_loadbuffer(L, s, strlen(s), s);
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155 }
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156
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157 /* -- Dump bytecode ------------------------------------------------------- */
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158
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159 LUA_API int lua_dump(lua_State *L, lua_Writer writer, void *data)
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160 {
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161 cTValue *o = L->top-1;
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162 lj_checkapi(L->top > L->base, "top slot empty");
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163 if (tvisfunc(o) && isluafunc(funcV(o)))
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164 return lj_bcwrite(L, funcproto(funcV(o)), writer, data, 0);
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165 else
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166 return 1;
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167 }
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168