1993-03-21 12:45:37 +03:00
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/********************************************
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scan.h
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copyright 1991, Michael D. Brennan
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This is a source file for mawk, an implementation of
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the AWK programming language.
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Mawk is distributed without warranty under the terms of
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the GNU General Public License, version 2, 1991.
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********************************************/
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/* $Log: scan.h,v $
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1993-07-03 03:56:52 +04:00
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/* Revision 1.2 1993/07/02 23:57:55 jtc
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/* Updated to mawk 1.1.4
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1993-03-21 12:45:37 +03:00
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/*
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1993-07-03 03:56:52 +04:00
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* Revision 5.1 1991/12/05 07:59:33 brennan
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1993-03-21 12:45:37 +03:00
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* 1.1 pre-release
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1993-07-03 03:56:52 +04:00
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*
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1993-03-21 12:45:37 +03:00
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*/
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/* scan.h */
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#ifndef SCAN_H_INCLUDED
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#define SCAN_H_INCLUDED 1
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#include <stdio.h>
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#ifndef MAKESCAN
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#include "symtype.h"
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#include "parse.h"
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#endif
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extern char scan_code[256] ;
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/* the scan codes to compactify the main switch */
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#define SC_SPACE 1
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#define SC_NL 2
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#define SC_SEMI_COLON 3
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#define SC_FAKE_SEMI_COLON 4
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#define SC_LBRACE 5
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#define SC_RBRACE 6
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#define SC_QMARK 7
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#define SC_COLON 8
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#define SC_OR 9
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#define SC_AND 10
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#define SC_PLUS 11
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#define SC_MINUS 12
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#define SC_MUL 13
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#define SC_DIV 14
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#define SC_MOD 15
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#define SC_POW 16
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#define SC_LPAREN 17
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#define SC_RPAREN 18
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#define SC_LBOX 19
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#define SC_RBOX 20
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#define SC_IDCHAR 21
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#define SC_DIGIT 22
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#define SC_DQUOTE 23
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#define SC_ESCAPE 24
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#define SC_COMMENT 25
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#define SC_EQUAL 26
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#define SC_NOT 27
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#define SC_LT 28
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#define SC_GT 29
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#define SC_COMMA 30
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#define SC_DOT 31
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#define SC_MATCH 32
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#define SC_DOLLAR 33
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#define SC_UNEXPECTED 34
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#ifndef MAKESCAN
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/* global functions in scan.c */
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void PROTO(scan_init, (char *) ) ;
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void PROTO(scan_cleanup, (void) ) ;
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void PROTO(eat_nl, (void) ) ;
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int PROTO(yylex, (void) ) ;
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extern YYSTYPE yylval ;
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#define ct_ret(x) return current_token = (x)
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#define next() (*buffp ? *buffp++ : slow_next())
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#define un_next() buffp--
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#define test1_ret(c,x,d) if ( next() == (c) ) ct_ret(x) ;\
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else { un_next() ; ct_ret(d) ; }
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#define test2_ret(c1,x1,c2,x2,d) switch( next() )\
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{ case c1: ct_ret(x1) ;\
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case c2: ct_ret(x2) ;\
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default: un_next() ;\
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ct_ret(d) ; }
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#endif /* ! MAKESCAN */
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#endif
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