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https://github.com/RetroShare/RetroShare.git
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3be22536df
git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs-b1@5953 b45a01b8-16f6-495d-af2f-9b41ad6348cc
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/* Copyright (c) 2007 by Ian Piumarta
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the 'Software'),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, provided that the above copyright notice(s) and this
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* permission notice appear in all copies of the Software. Acknowledgement
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* of the use of this Software in supporting documentation would be
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* appreciated but is not required.
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*
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* THE SOFTWARE IS PROVIDED 'AS IS'. USE ENTIRELY AT YOUR OWN RISK.
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*
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* Last edited: 2007-05-15 10:32:05 by piumarta on emilia
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*/
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#include <stdio.h>
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enum { Unknown= 0, Rule, Variable, Name, Dot, Character, String, Class, Action, Predicate, Alternate, Sequence, PeekFor, PeekNot, Query, Star, Plus };
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enum {
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RuleUsed = 1<<0,
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RuleReached = 1<<1,
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};
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typedef union Node Node;
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struct Rule { int type; Node *next; char *name; Node *variables; Node *expression; int id; int flags; };
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struct Variable { int type; Node *next; char *name; Node *value; int offset; };
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struct Name { int type; Node *next; Node *rule; Node *variable; };
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struct Dot { int type; Node *next; };
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struct Character { int type; Node *next; char *value; };
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struct String { int type; Node *next; char *value; };
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struct Class { int type; Node *next; unsigned char *value; };
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struct Action { int type; Node *next; char *text; Node *list; char *name; Node *rule; };
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struct Predicate { int type; Node *next; char *text; };
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struct Alternate { int type; Node *next; Node *first; Node *last; };
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struct Sequence { int type; Node *next; Node *first; Node *last; };
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struct PeekFor { int type; Node *next; Node *element; };
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struct PeekNot { int type; Node *next; Node *element; };
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struct Query { int type; Node *next; Node *element; };
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struct Star { int type; Node *next; Node *element; };
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struct Plus { int type; Node *next; Node *element; };
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struct Any { int type; Node *next; };
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union Node
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{
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int type;
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struct Rule rule;
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struct Variable variable;
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struct Name name;
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struct Dot dot;
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struct Character character;
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struct String string;
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struct Class cclass;
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struct Action action;
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struct Predicate predicate;
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struct Alternate alternate;
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struct Sequence sequence;
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struct PeekFor peekFor;
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struct PeekNot peekNot;
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struct Query query;
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struct Star star;
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struct Plus plus;
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struct Any any;
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};
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extern Node *actions;
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extern Node *rules;
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extern Node *start;
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extern int ruleCount;
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extern FILE *output;
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extern Node *makeRule(char *name);
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extern Node *findRule(char *name);
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extern Node *beginRule(Node *rule);
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extern void Rule_setExpression(Node *rule, Node *expression);
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extern Node *Rule_beToken(Node *rule);
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extern Node *makeVariable(char *name);
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extern Node *makeName(Node *rule);
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extern Node *makeDot(void);
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extern Node *makeCharacter(char *text);
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extern Node *makeString(char *text);
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extern Node *makeClass(char *text);
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extern Node *makeAction(char *text);
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extern Node *makePredicate(char *text);
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extern Node *makeAlternate(Node *e);
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extern Node *Alternate_append(Node *e, Node *f);
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extern Node *makeSequence(Node *e);
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extern Node *Sequence_append(Node *e, Node *f);
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extern Node *makePeekFor(Node *e);
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extern Node *makePeekNot(Node *e);
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extern Node *makeQuery(Node *e);
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extern Node *makeStar(Node *e);
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extern Node *makePlus(Node *e);
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extern Node *push(Node *node);
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extern Node *top(void);
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extern Node *pop(void);
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extern void Rule_compile_c_header(void);
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extern void Rule_compile_c(Node *node);
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extern void Node_print(Node *node);
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extern void Rule_print(Node *node);
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