mirror of https://github.com/odrling/Aegisub
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
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/*
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** $Id: lpeg.h,v 1.1 2009/12/23 16:15:36 roberto Exp $
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** LPeg - PEG pattern matching for Lua
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** Copyright 2009, Lua.org & PUC-Rio (see 'lpeg.html' for license)
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** written by Roberto Ierusalimschy
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*/
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#ifndef lpeg_h
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#define lpeg_h
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#include "lua.h"
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#define KEYNEWPATT "lpeg.newpf"
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/*
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** type of extension functions that define new "patterns" for LPEG
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** It should return the new current position or NULL if match fails
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*/
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typedef const char *(*PattFunc) (const char *s, /* current position */
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const char *e, /* string end */
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const char *o, /* string start */
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const void *ud); /* user data */
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/*
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** function to create new patterns based on 'PattFunc' functions.
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** This function is available at *registry[KEYNEWPATT]. (Notice
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** the extra indirection; the userdata at the registry points to
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** a variable that points to the function. In ANSI C a void* cannot
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** point to a function.)
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*/
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typedef void (*Newpf) (lua_State *L,
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PattFunc f, /* pattern */
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const void *ud, /* (user) data to be passed to 'f' */
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size_t l); /* size of data to be passed to 'f' */
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#endif
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