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annotate third_party/luajit/src/lj_lex.h @ 198:008ca7780c8a

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S3 upload got it to work.
author MrJuneJune <me@mrjunejune.com>
date Sat, 14 Feb 2026 16:18:14 -0800
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