[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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

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

#define YYSTYPE PARSER_VALUE_TYPE

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

#undef YY_INPUT
#define YY_INPUT(buffer, bytes_read, bytes_requested)			\
({									\
	int __ret;							\
	unsigned int __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);

/* set by parser -- this is another thing which makes the parser thread-unsafe :(. */
int lexer_value_is_time = 0; /* for determining if "m" suffix means mega- or minutes */

#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][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;
		}
[mM]		{
			if (!lexer_value_is_time) {
				set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
			} else {
				set_suffix_value(yylval, 60LL * 1000000LL, 60.0 * 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
fa07eaa6	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
b470a02c SC	18	*
	19	*/
	20
	21	#include <stdio.h>
	22	#include <string.h>
	23	#include "y.tab.h"
	24
	25	#define YYSTYPE PARSER_VALUE_TYPE
	26
de06a468	27	extern int lexer_input(char buffer, unsigned int nbytes, int buffersize);
b470a02c SC	28
b470a02c SC	29	#undef YY_INPUT
bc10c331 JA	30	#define YY_INPUT(buffer, bytes_read, bytes_requested) \
	31	({ \
	32	int __ret; \
de06a468	33	unsigned int __bread = bytes_read; \
3fcc6ca7 JA	34	__ret = lexer_input((buffer), &__bread, (bytes_requested)); \
3fcc6ca7 JA	35	bytes_read = __bread; \
bc10c331	36	__ret; \
3fcc6ca7	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	41
bc10c331	42	static void __attribute__((unused)) yyunput(int c, char *buf_ptr);
b470a02c SC	43	static int __attribute__((unused)) input(void);
b470a02c SC	44
88038bc7 SC	45	/* set by parser -- this is another thing which makes the parser thread-unsafe :(. */
	46	int lexer_value_is_time = 0; /* for determining if "m" suffix means mega- or minutes */
	47
18722a18 SC	48	#define set_suffix_value(yylval, i_val, d_val, has_d_val) \
	49	(yylval).v.dval = (d_val); \
	50	(yylval).v.ival = (i_val); \
	51	(yylval).v.has_dval = (has_d_val); \
	52	(yylval).v.has_error = 0;
	53
b470a02c SC	54	%}
	55
	56	%%
	57
	58
18722a18 SC	59	[kK]\|[kK][bB] {
	60	set_suffix_value(yylval, 1024, 1024.0, 0);
	61	return SUFFIX;
	62	}
88038bc7	63	[Mm][bB] {
18722a18 SC	64	set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
	65	return SUFFIX;
	66	}
	67	[mM][sS] {
	68	set_suffix_value(yylval, 1000, 1000.0, 1);
	69	return SUFFIX;
	70	}
	71	[uU][sS] {
	72	set_suffix_value(yylval, 1, 1.0, 1);
	73	return SUFFIX;
	74	}
	75	[gG]\|[Gg][Bb] {
	76	set_suffix_value(yylval, 1024LL * 1024 * 1024, 1024.0 * 1024.0 * 1024, 0);
	77	return SUFFIX;
	78	}
	79	[tT]\|[tT][bB] {
	80	set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024,
	81	1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024, 0);
	82	return SUFFIX;
	83	}
	84	[pP]\|[pP][bB] {
	85	set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024 * 1024,
	86	1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024.0, 0);
	87	return SUFFIX;
	88	}
	89	[kK][iI][Bb] {
	90	set_suffix_value(yylval, 1000LL, 1000.0, 0);
	91	return SUFFIX;
	92	}
	93	[mM][Ii][bB] {
	94	set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
	95	return SUFFIX;
	96	}
	97	[gG][iI][Bb] {
	98	set_suffix_value(yylval, 1000000000LL, 1000000000.0 , 0);
	99	return SUFFIX;
	100	}
	101	[pP][iI][Bb] {
	102	set_suffix_value(yylval, 1000000000000LL, 1000000000000.0 , 0);
	103	return SUFFIX;
	104	}
	105	[sS] {
	106	set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
	107	return SUFFIX;
	108	}
88038bc7 SC	109	[mM] {
	110	if (!lexer_value_is_time) {
	111	set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
	112	} else {
	113	set_suffix_value(yylval, 60LL * 1000000LL, 60.0 * 1000000.0, 0);
	114	}
	115	return SUFFIX;
	116	}
18722a18 SC	117	[dD] {
	118	set_suffix_value(yylval, 60LL * 60LL * 24LL * 1000000LL,
	119	60.0 * 60.0 * 24.0 * 1000000.0, 0);
	120	return SUFFIX;
	121	}
	122	[hH] {
	123	set_suffix_value(yylval, 60LL * 60LL * 1000000LL,
	124	60.0 * 60.0 * 1000000.0, 0);
	125	return SUFFIX;
	126	}
b470a02c	127	[ \t] ; /* ignore whitespace */
51a65a41	128	[#:,].* ; /* ignore comments, and everything after colons and commas */
ca45c1f3	129	[0-9][.][0-9]+\|[0-9][.]?[0-9]+[eE][-+]*[0-9]+ {
b470a02c SC	130	int rc;
	131	double dval;
	132
	133	rc = sscanf(yytext, "%lf", &dval);
	134	if (rc == 1) {
	135	yylval.v.dval = dval;
	136	yylval.v.ival = (long long) dval;
	137	yylval.v.has_dval = 1;
	138	yylval.v.has_error = 0;
	139	return NUMBER;
	140	} else {
3b0d05e8	141	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	142	yylval.v.has_error = 1;
	143	return NUMBER;
	144	}
	145	}
	146	0x[0-9a-fA-F]+ {
	147	int rc, intval;
	148	rc = sscanf(yytext, "%x", &intval);
	149	if (rc == 1) {
	150	yylval.v.ival = intval;
	151	yylval.v.dval = (double) intval;
	152	yylval.v.has_dval = 0;
	153	yylval.v.has_error = 0;
	154	return NUMBER;
	155	} else {
3b0d05e8	156	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	157	yylval.v.has_error = 1;
	158	return NUMBER;
	159	}
	160	}
	161	[0-9]+ {
	162	int rc, intval;
	163	rc = sscanf(yytext, "%d", &intval);
	164	if (rc == 1) {
	165	yylval.v.ival = intval;
	166	yylval.v.dval = (double) intval;
	167	yylval.v.has_dval = 0;
	168	yylval.v.has_error = 0;
	169	return NUMBER;
	170	} else {
3b0d05e8	171	yyerror(0, 0, 0, 0, "bad number\n");
b470a02c SC	172	yylval.v.has_error = 1;
	173	return NUMBER;
	174	}
	175	}
	176	\n return 0;
886e5ecd	177	[+-/*()^%] return yytext[0];
ae46966a	178
b470a02c SC	179	. {
	180	yylval.v.has_error = 1;
	181	return NUMBER;
	182	}
	183	%%
	184