[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, size_t *nbytes, int buffersize);

#undef YY_INPUT
#define YY_INPUT(buffer, bytes_read, bytes_requested)	\
({							\
	int __ret;					\
	size_t __bread = bytes_read;			\
	__ret = lexer_input((buffer), &__bread, (bytes_requested));	\
	bytes_read = __bread;						\
	__ret;						\
})

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]+|[0-9]*[.]?[0-9]+[eE][-+]*[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
3fcc6ca7	27	extern int lexer_input(char* buffer, size_t *nbytes, int buffersize);
b470a02c SC	28
b470a02c SC	29	#undef YY_INPUT
3fcc6ca7 JA	30	#define YY_INPUT(buffer, bytes_read, bytes_requested) \
	31	({ \
	32	int __ret; \
	33	size_t __bread = bytes_read; \
	34	__ret = lexer_input((buffer), &__bread, (bytes_requested)); \
	35	bytes_read = __bread; \
	36	__ret; \
	37	})
b470a02c SC	38
b470a02c SC	39	extern int yyerror(long long result, double dresult,
3b0d05e8	40	int has_error, int units_specified, const char *msg);
b470a02c SC	41
	42	static void __attribute__((unused)) yyunput(int c,char *buf_ptr);
	43	static int __attribute__((unused)) input(void);
	44
18722a18 SC	45	#define set_suffix_value(yylval, i_val, d_val, has_d_val) \
	46	(yylval).v.dval = (d_val); \
	47	(yylval).v.ival = (i_val); \
	48	(yylval).v.has_dval = (has_d_val); \
	49	(yylval).v.has_error = 0;
	50
b470a02c SC	51	%}
	52
	53	%%
	54
	55
18722a18 SC	56	[kK]\|[kK][bB] {
	57	set_suffix_value(yylval, 1024, 1024.0, 0);
	58	return SUFFIX;
	59	}
	60	[Mm]\|[Mm][bB] {
	61	set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
	62	return SUFFIX;
	63	}
	64	[mM][sS] {
	65	set_suffix_value(yylval, 1000, 1000.0, 1);
	66	return SUFFIX;
	67	}
	68	[uU][sS] {
	69	set_suffix_value(yylval, 1, 1.0, 1);
	70	return SUFFIX;
	71	}
	72	[gG]\|[Gg][Bb] {
	73	set_suffix_value(yylval, 1024LL * 1024 * 1024, 1024.0 * 1024.0 * 1024, 0);
	74	return SUFFIX;
	75	}
	76	[tT]\|[tT][bB] {
	77	set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024,
	78	1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024, 0);
	79	return SUFFIX;
	80	}
	81	[pP]\|[pP][bB] {
	82	set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024 * 1024,
	83	1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024.0, 0);
	84	return SUFFIX;
	85	}
	86	[kK][iI][Bb] {
	87	set_suffix_value(yylval, 1000LL, 1000.0, 0);
	88	return SUFFIX;
	89	}
	90	[mM][Ii][bB] {
	91	set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
	92	return SUFFIX;
	93	}
	94	[gG][iI][Bb] {
	95	set_suffix_value(yylval, 1000000000LL, 1000000000.0 , 0);
	96	return SUFFIX;
	97	}
	98	[pP][iI][Bb] {
	99	set_suffix_value(yylval, 1000000000000LL, 1000000000000.0 , 0);
	100	return SUFFIX;
	101	}
	102	[sS] {
	103	set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
	104	return SUFFIX;
	105	}
	106	[dD] {
	107	set_suffix_value(yylval, 60LL * 60LL * 24LL * 1000000LL,
	108	60.0 * 60.0 * 24.0 * 1000000.0, 0);
	109	return SUFFIX;
	110	}
	111	[hH] {
	112	set_suffix_value(yylval, 60LL * 60LL * 1000000LL,
	113	60.0 * 60.0 * 1000000.0, 0);
	114	return SUFFIX;
	115	}
b470a02c	116	[ \t] ; /* ignore whitespace */
51a65a41	117	[#:,].* ; /* ignore comments, and everything after colons and commas */
ca45c1f3	118	[0-9][.][0-9]+\|[0-9][.]?[0-9]+[eE][-+]*[0-9]+ {
b470a02c SC	119	int rc;
	120	double dval;
	121
	122	rc = sscanf(yytext, "%lf", &dval);
	123	if (rc == 1) {
	124	yylval.v.dval = dval;
	125	yylval.v.ival = (long long) dval;
	126	yylval.v.has_dval = 1;
	127	yylval.v.has_error = 0;
	128	return NUMBER;
	129	} else {
3b0d05e8	130	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	131	yylval.v.has_error = 1;
	132	return NUMBER;
	133	}
	134	}
	135	0x[0-9a-fA-F]+ {
	136	int rc, intval;
	137	rc = sscanf(yytext, "%x", &intval);
	138	if (rc == 1) {
	139	yylval.v.ival = intval;
	140	yylval.v.dval = (double) intval;
	141	yylval.v.has_dval = 0;
	142	yylval.v.has_error = 0;
	143	return NUMBER;
	144	} else {
3b0d05e8	145	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	146	yylval.v.has_error = 1;
	147	return NUMBER;
	148	}
	149	}
	150	[0-9]+ {
	151	int rc, intval;
	152	rc = sscanf(yytext, "%d", &intval);
	153	if (rc == 1) {
	154	yylval.v.ival = intval;
	155	yylval.v.dval = (double) intval;
	156	yylval.v.has_dval = 0;
	157	yylval.v.has_error = 0;
	158	return NUMBER;
	159	} else {
3b0d05e8	160	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	161	yylval.v.has_error = 1;
	162	return NUMBER;
	163	}
	164	}
	165	\n return 0;
886e5ecd	166	[+-/*()^%] return yytext[0];
ae46966a	167
b470a02c SC	168	. {
	169	yylval.v.has_error = 1;
	170	return NUMBER;
	171	}
	172	%%
	173