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annotate third_party/luajit/src/lj_lex.h @ 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 ** Lexical analyzer.
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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 #ifndef _LJ_LEX_H
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7 #define _LJ_LEX_H
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8
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9 #include <stdarg.h>
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10
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11 #include "lj_obj.h"
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12 #include "lj_err.h"
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13
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14 /* Lua lexer tokens. */
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15 #define TKDEF(_, __) \
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16 _(and) _(break) _(do) _(else) _(elseif) _(end) _(false) \
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17 _(for) _(function) _(goto) _(if) _(in) _(local) _(nil) _(not) _(or) \
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18 _(repeat) _(return) _(then) _(true) _(until) _(while) \
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19 __(concat, ..) __(dots, ...) __(eq, ==) __(ge, >=) __(le, <=) __(ne, ~=) \
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20 __(label, ::) __(number, <number>) __(name, <name>) __(string, <string>) \
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21 __(eof, <eof>)
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22
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23 enum {
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24 TK_OFS = 256,
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25 #define TKENUM1(name) TK_##name,
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26 #define TKENUM2(name, sym) TK_##name,
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27 TKDEF(TKENUM1, TKENUM2)
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28 #undef TKENUM1
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29 #undef TKENUM2
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30 TK_RESERVED = TK_while - TK_OFS
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31 };
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32
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33 typedef int LexChar; /* Lexical character. Unsigned ext. from char. */
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34 typedef int LexToken; /* Lexical token. */
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35
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36 /* Combined bytecode ins/line. Only used during bytecode generation. */
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37 typedef struct BCInsLine {
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38 BCIns ins; /* Bytecode instruction. */
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39 BCLine line; /* Line number for this bytecode. */
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40 } BCInsLine;
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41
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42 /* Info for local variables. Only used during bytecode generation. */
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43 typedef struct VarInfo {
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44 GCRef name; /* Local variable name or goto/label name. */
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45 BCPos startpc; /* First point where the local variable is active. */
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46 BCPos endpc; /* First point where the local variable is dead. */
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47 uint8_t slot; /* Variable slot. */
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48 uint8_t info; /* Variable/goto/label info. */
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49 } VarInfo;
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50
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51 /* Lua lexer state. */
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52 typedef struct LexState {
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53 struct FuncState *fs; /* Current FuncState. Defined in lj_parse.c. */
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54 struct lua_State *L; /* Lua state. */
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55 TValue tokval; /* Current token value. */
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56 TValue lookaheadval; /* Lookahead token value. */
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57 const char *p; /* Current position in input buffer. */
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58 const char *pe; /* End of input buffer. */
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59 LexChar c; /* Current character. */
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60 LexToken tok; /* Current token. */
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61 LexToken lookahead; /* Lookahead token. */
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62 SBuf sb; /* String buffer for tokens. */
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63 lua_Reader rfunc; /* Reader callback. */
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64 void *rdata; /* Reader callback data. */
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65 BCLine linenumber; /* Input line counter. */
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66 BCLine lastline; /* Line of last token. */
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67 GCstr *chunkname; /* Current chunk name (interned string). */
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68 const char *chunkarg; /* Chunk name argument. */
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69 const char *mode; /* Allow loading bytecode (b) and/or source text (t). */
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70 VarInfo *vstack; /* Stack for names and extents of local variables. */
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71 MSize sizevstack; /* Size of variable stack. */
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72 MSize vtop; /* Top of variable stack. */
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73 BCInsLine *bcstack; /* Stack for bytecode instructions/line numbers. */
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74 MSize sizebcstack; /* Size of bytecode stack. */
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75 uint32_t level; /* Syntactical nesting level. */
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76 int endmark; /* Trust bytecode end marker, even if not at EOF. */
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77 } LexState;
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78
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79 LJ_FUNC int lj_lex_setup(lua_State *L, LexState *ls);
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80 LJ_FUNC void lj_lex_cleanup(lua_State *L, LexState *ls);
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81 LJ_FUNC void lj_lex_next(LexState *ls);
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82 LJ_FUNC LexToken lj_lex_lookahead(LexState *ls);
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83 LJ_FUNC const char *lj_lex_token2str(LexState *ls, LexToken tok);
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84 LJ_FUNC_NORET void lj_lex_error(LexState *ls, LexToken tok, ErrMsg em, ...);
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85 LJ_FUNC void lj_lex_init(lua_State *L);
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86
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87 #ifdef LUA_USE_ASSERT
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88 #define lj_assertLS(c, ...) (lj_assertG_(G(ls->L), (c), __VA_ARGS__))
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89 #else
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90 #define lj_assertLS(c, ...) ((void)ls)
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91 #endif
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92
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93 #endif