[fio.git] / exp / expression-parser.l

%{

/*
 * (C) Copyright 2014, Stephen M. Cameron.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2 as
 *  published by the Free Software Foundation.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <stdio.h>
#include <string.h>
#include "y.tab.h"

#define YYSTYPE PARSER_VALUE_TYPE

extern int lexer_input(char* buffer, int *nbytes, int buffersize);

#undef YY_INPUT
#define YY_INPUT(buffer, bytes_read, bytes_requested) \
		lexer_input((buffer), &(bytes_read), (bytes_requested))

extern int yyerror(long long *result, double *dresult,
		int *has_error, int *units_specified, const char *msg);

static void __attribute__((unused)) yyunput(int c,char *buf_ptr);
static int __attribute__((unused)) input(void);

#define set_suffix_value(yylval, i_val, d_val, has_d_val) \
	(yylval).v.dval = (d_val); \
	(yylval).v.ival = (i_val); \
	(yylval).v.has_dval = (has_d_val); \
	(yylval).v.has_error = 0;

%}

%%


[kK]|[kK][bB] 	{
			set_suffix_value(yylval, 1024, 1024.0, 0);
			return SUFFIX;
		}
[Mm]|[Mm][bB]	{
			set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
			return SUFFIX;
		}
[mM][sS]	{
			set_suffix_value(yylval, 1000, 1000.0, 1);
			return SUFFIX;
		}
[uU][sS]	{
			set_suffix_value(yylval, 1, 1.0, 1);
			return SUFFIX;
		}
[gG]|[Gg][Bb]	{
			set_suffix_value(yylval, 1024LL * 1024 * 1024, 1024.0 * 1024.0 * 1024, 0);
			return SUFFIX;
		}
[tT]|[tT][bB]	{	
			set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024,
						1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024, 0);
			return SUFFIX;
		}
[pP]|[pP][bB]	{	
			set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024 * 1024,
					1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024.0, 0);
			return SUFFIX;
		}
[kK][iI][Bb]	{
			set_suffix_value(yylval, 1000LL, 1000.0, 0);
			return SUFFIX;
		}
[mM][Ii][bB]	{
			set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
			return SUFFIX;
		}
[gG][iI][Bb]	{
			set_suffix_value(yylval, 1000000000LL, 1000000000.0 , 0);
			return SUFFIX;
		}
[pP][iI][Bb]	{	
			set_suffix_value(yylval, 1000000000000LL, 1000000000000.0 , 0);
			return SUFFIX;
		}
[sS]		{
			set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
			return SUFFIX;
		}
[dD]		{
			set_suffix_value(yylval, 60LL * 60LL * 24LL * 1000000LL,
						60.0 * 60.0 * 24.0 * 1000000.0, 0);
			return SUFFIX;
		}
[hH]		{	
			set_suffix_value(yylval, 60LL * 60LL * 1000000LL,
					60.0 * 60.0 * 1000000.0, 0);
			return SUFFIX;
		}
[ \t] ; /* ignore whitespace */
[#:,].* ; /* ignore comments, and everything after colons and commas */
[0-9]*[.][0-9]+ {
			int rc;
			double dval;

			rc = sscanf(yytext, "%lf", &dval);
			if (rc == 1) {
				yylval.v.dval = dval;
				yylval.v.ival = (long long) dval;
				yylval.v.has_dval = 1;
				yylval.v.has_error = 0;
				return NUMBER;
			} else {
				yyerror(0, 0, 0, 0, "bad number\n");
				yylval.v.has_error = 1;
				return NUMBER;
			}
		}
0x[0-9a-fA-F]+ {
		int rc, intval;
		rc = sscanf(yytext, "%x", &intval);
		if (rc == 1) {
			yylval.v.ival = intval;
			yylval.v.dval = (double) intval;
			yylval.v.has_dval = 0;
			yylval.v.has_error = 0;
			return NUMBER;
		} else {
			yyerror(0, 0, 0, 0, "bad number\n");
			yylval.v.has_error = 1;
			return NUMBER;
		}
	}
[0-9]+	{
		int rc, intval;
		rc = sscanf(yytext, "%d", &intval);
		if (rc == 1) {
			yylval.v.ival = intval;
			yylval.v.dval = (double) intval;
			yylval.v.has_dval = 0;
			yylval.v.has_error = 0;
			return NUMBER;
		} else {
			yyerror(0, 0, 0, 0, "bad number\n");
			yylval.v.has_error = 1;
			return NUMBER;
		}
	}
\n	return 0;
[+-/*()^%]	return yytext[0];

.	{
		yylval.v.has_error = 1;
		return NUMBER;	
	}
%%
Commit	Line	Data
b470a02c SC	1	%{
	2
	3	/*
	4	* (C) Copyright 2014, Stephen M. Cameron.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	18	*
	19	*/
	20
	21	#include <stdio.h>
	22	#include <string.h>
	23	#include "y.tab.h"
	24
	25	#define YYSTYPE PARSER_VALUE_TYPE
	26
	27	extern int lexer_input(char* buffer, int *nbytes, int buffersize);
	28
	29	#undef YY_INPUT
	30	#define YY_INPUT(buffer, bytes_read, bytes_requested) \
	31	lexer_input((buffer), &(bytes_read), (bytes_requested))
	32
	33	extern int yyerror(long long result, double dresult,
3b0d05e8	34	int has_error, int units_specified, const char *msg);
b470a02c SC	35
	36	static void __attribute__((unused)) yyunput(int c,char *buf_ptr);
	37	static int __attribute__((unused)) input(void);
	38
18722a18 SC	39	#define set_suffix_value(yylval, i_val, d_val, has_d_val) \
	40	(yylval).v.dval = (d_val); \
	41	(yylval).v.ival = (i_val); \
	42	(yylval).v.has_dval = (has_d_val); \
	43	(yylval).v.has_error = 0;
	44
b470a02c SC	45	%}
	46
	47	%%
	48
	49
18722a18 SC	50	[kK]\|[kK][bB] {
	51	set_suffix_value(yylval, 1024, 1024.0, 0);
	52	return SUFFIX;
	53	}
	54	[Mm]\|[Mm][bB] {
	55	set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
	56	return SUFFIX;
	57	}
	58	[mM][sS] {
	59	set_suffix_value(yylval, 1000, 1000.0, 1);
	60	return SUFFIX;
	61	}
	62	[uU][sS] {
	63	set_suffix_value(yylval, 1, 1.0, 1);
	64	return SUFFIX;
	65	}
	66	[gG]\|[Gg][Bb] {
	67	set_suffix_value(yylval, 1024LL * 1024 * 1024, 1024.0 * 1024.0 * 1024, 0);
	68	return SUFFIX;
	69	}
	70	[tT]\|[tT][bB] {
	71	set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024,
	72	1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024, 0);
	73	return SUFFIX;
	74	}
	75	[pP]\|[pP][bB] {
	76	set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024 * 1024,
	77	1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024.0, 0);
	78	return SUFFIX;
	79	}
	80	[kK][iI][Bb] {
	81	set_suffix_value(yylval, 1000LL, 1000.0, 0);
	82	return SUFFIX;
	83	}
	84	[mM][Ii][bB] {
	85	set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
	86	return SUFFIX;
	87	}
	88	[gG][iI][Bb] {
	89	set_suffix_value(yylval, 1000000000LL, 1000000000.0 , 0);
	90	return SUFFIX;
	91	}
	92	[pP][iI][Bb] {
	93	set_suffix_value(yylval, 1000000000000LL, 1000000000000.0 , 0);
	94	return SUFFIX;
	95	}
	96	[sS] {
	97	set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
	98	return SUFFIX;
	99	}
	100	[dD] {
	101	set_suffix_value(yylval, 60LL * 60LL * 24LL * 1000000LL,
	102	60.0 * 60.0 * 24.0 * 1000000.0, 0);
	103	return SUFFIX;
	104	}
	105	[hH] {
	106	set_suffix_value(yylval, 60LL * 60LL * 1000000LL,
	107	60.0 * 60.0 * 1000000.0, 0);
	108	return SUFFIX;
	109	}
b470a02c	110	[ \t] ; /* ignore whitespace */
51a65a41	111	[#:,].* ; /* ignore comments, and everything after colons and commas */
b470a02c SC	112	[0-9]*[.][0-9]+ {
	113	int rc;
	114	double dval;
	115
	116	rc = sscanf(yytext, "%lf", &dval);
	117	if (rc == 1) {
	118	yylval.v.dval = dval;
	119	yylval.v.ival = (long long) dval;
	120	yylval.v.has_dval = 1;
	121	yylval.v.has_error = 0;
	122	return NUMBER;
	123	} else {
3b0d05e8	124	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	125	yylval.v.has_error = 1;
	126	return NUMBER;
	127	}
	128	}
	129	0x[0-9a-fA-F]+ {
	130	int rc, intval;
	131	rc = sscanf(yytext, "%x", &intval);
	132	if (rc == 1) {
	133	yylval.v.ival = intval;
	134	yylval.v.dval = (double) intval;
	135	yylval.v.has_dval = 0;
	136	yylval.v.has_error = 0;
	137	return NUMBER;
	138	} else {
3b0d05e8	139	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	140	yylval.v.has_error = 1;
	141	return NUMBER;
	142	}
	143	}
	144	[0-9]+ {
	145	int rc, intval;
	146	rc = sscanf(yytext, "%d", &intval);
	147	if (rc == 1) {
	148	yylval.v.ival = intval;
	149	yylval.v.dval = (double) intval;
	150	yylval.v.has_dval = 0;
	151	yylval.v.has_error = 0;
	152	return NUMBER;
	153	} else {
3b0d05e8	154	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	155	yylval.v.has_error = 1;
	156	return NUMBER;
	157	}
	158	}
	159	\n return 0;
886e5ecd	160	[+-/*()^%] return yytext[0];
ae46966a	161
b470a02c SC	162	. {
	163	yylval.v.has_error = 1;
	164	return NUMBER;
	165	}
	166	%%
	167