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/*
* Copyright 2007-2018 Adrian Thurston <thurston@colm.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _RLSCAN_H
#define _RLSCAN_H
#include <iostream>
#include "rlscan.h"
#include "vector.h"
#ifdef WITH_RAGEL_KELBT
#include "rlparse.h"
#endif
#include "parsedata.h"
#include "avltree.h"
#include "vector.h"
using std::istream;
using std::ostream;
extern char *Parser6_lelNames[];
struct Section;
struct Scanner
{
Scanner( InputData *id, const char *fileName, istream &input,
Parser6 *inclToParser, char *inclSectionTarg,
int includeDepth, bool importMachines )
:
id(id), fileName(fileName),
input(input),
inclToParser(inclToParser),
inclSectionTarg(inclSectionTarg),
includeDepth(includeDepth),
importMachines(importMachines),
cur_token(0),
line(1), column(1), lastnl(0),
parser(0), ignoreSection(false),
parserExistsError(false),
whitespaceOn(true),
lastToken(0),
section(0),
sectionPass(false)
{}
void handleMachine();
void handleInclude();
void handleImport();
void init();
void token( int type, char *start, char *end );
void token( int type, char c );
void token( int type );
void processToken( int type, char *tokdata, int toklen );
void directToParser( Parser6 *toParser, const char *tokFileName, int tokLine,
int tokColumn, int type, char *tokdata, int toklen );
void flushImport( );
void importToken( int type, char *start, char *end );
void pass( int token, char *start, char *end );
void pass();
void updateCol();
void startSection();
void endSection();
void do_scan();
bool active();
InputLoc scan_loc();
InputData *id;
const char *fileName;
istream &input;
Parser6 *inclToParser;
char *inclSectionTarg;
int includeDepth;
bool importMachines;
/* For import parsing. */
int tok_cs, tok_act;
int *tok_ts, *tok_te;
int cur_token;
static const int max_tokens = 32;
int token_data[max_tokens];
char *token_strings[max_tokens];
int token_lens[max_tokens];
/* For section processing. */
int cs;
char *word, *lit;
int word_len, lit_len;
/* For character scanning. */
int line;
InputLoc sectionLoc;
char *ts, *te;
int column;
char *lastnl;
/* Set by machine statements, these persist from section to section
* allowing for unnamed sections. */
Parser6 *parser;
bool ignoreSection;
/* This is set if ragel has already emitted an error stating that
* no section name has been seen and thus no parser exists. */
bool parserExistsError;
/* This is for inline code. By default it is on. It goes off for
* statements and values in inline blocks which are parsed. */
bool whitespaceOn;
/* Keeps a record of the previous token sent to the section parser. */
int lastToken;
Section *section;
bool sectionPass;
};
#endif
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