184 lines
4.5 KiB
Text
184 lines
4.5 KiB
Text
%{
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/*
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* (C) Copyright 2014, Stephen M. Cameron.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "y.tab.h"
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#define YYSTYPE PARSER_VALUE_TYPE
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extern int lexer_input(char *buffer, unsigned int *nbytes, int buffersize);
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#undef YY_INPUT
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#define YY_INPUT(buffer, bytes_read, bytes_requested) \
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({ \
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int __ret; \
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unsigned int __bread = bytes_read; \
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__ret = lexer_input((buffer), &__bread, (bytes_requested)); \
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bytes_read = __bread; \
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__ret; \
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})
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extern int yyerror(long long *result, double *dresult,
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int *has_error, int *units_specified, const char *msg);
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static void __attribute__((unused)) yyunput(int c, char *buf_ptr);
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static int __attribute__((unused)) input(void);
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/* set by parser -- this is another thing which makes the parser thread-unsafe :(. */
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int lexer_value_is_time = 0; /* for determining if "m" suffix means mega- or minutes */
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#define set_suffix_value(yylval, i_val, d_val, has_d_val) \
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(yylval).v.dval = (d_val); \
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(yylval).v.ival = (i_val); \
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(yylval).v.has_dval = (has_d_val); \
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(yylval).v.has_error = 0;
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%}
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%%
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[kK]|[kK][bB] {
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set_suffix_value(yylval, 1024, 1024.0, 0);
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return SUFFIX;
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}
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[Mm][bB] {
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set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
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return SUFFIX;
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}
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[mM][sS] {
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set_suffix_value(yylval, 1000, 1000.0, 1);
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return SUFFIX;
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}
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[uU][sS] {
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set_suffix_value(yylval, 1, 1.0, 1);
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return SUFFIX;
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}
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[gG]|[Gg][Bb] {
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set_suffix_value(yylval, 1024LL * 1024 * 1024, 1024.0 * 1024.0 * 1024, 0);
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return SUFFIX;
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}
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[tT]|[tT][bB] {
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set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024,
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1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024, 0);
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return SUFFIX;
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}
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[pP]|[pP][bB] {
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set_suffix_value(yylval, 1024LL * 1024 * 1024 * 1024 * 1024,
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1024.0 * 1024.0 * 1024.0 * 1024.0 * 1024.0, 0);
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return SUFFIX;
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}
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[kK][iI][Bb] {
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set_suffix_value(yylval, 1000LL, 1000.0, 0);
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return SUFFIX;
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}
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[mM][Ii][bB] {
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set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
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return SUFFIX;
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}
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[gG][iI][Bb] {
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set_suffix_value(yylval, 1000000000LL, 1000000000.0 , 0);
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return SUFFIX;
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}
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[pP][iI][Bb] {
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set_suffix_value(yylval, 1000000000000LL, 1000000000000.0 , 0);
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return SUFFIX;
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}
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[sS] {
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set_suffix_value(yylval, 1000000LL, 1000000.0 , 0);
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return SUFFIX;
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}
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[mM] {
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if (!lexer_value_is_time) {
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set_suffix_value(yylval, 1024 * 1024, 1024.0 * 1024.0, 0);
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} else {
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set_suffix_value(yylval, 60LL * 1000000LL, 60.0 * 1000000.0, 0);
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}
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return SUFFIX;
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}
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[dD] {
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set_suffix_value(yylval, 60LL * 60LL * 24LL * 1000000LL,
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60.0 * 60.0 * 24.0 * 1000000.0, 0);
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return SUFFIX;
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}
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[hH] {
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set_suffix_value(yylval, 60LL * 60LL * 1000000LL,
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60.0 * 60.0 * 1000000.0, 0);
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return SUFFIX;
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}
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[ \t] ; /* ignore whitespace */
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[#:,].* ; /* ignore comments, and everything after colons and commas */
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[0-9]*[.][0-9]+|[0-9]*[.]?[0-9]+[eE][-+]*[0-9]+ {
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int rc;
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double dval;
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rc = sscanf(yytext, "%lf", &dval);
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if (rc == 1) {
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yylval.v.dval = dval;
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yylval.v.ival = (long long) dval;
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yylval.v.has_dval = 1;
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yylval.v.has_error = 0;
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return NUMBER;
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} else {
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yyerror(0, 0, 0, 0, "bad number\n");
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yylval.v.has_error = 1;
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return NUMBER;
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}
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}
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0x[0-9a-fA-F]+ {
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int rc, intval;
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rc = sscanf(yytext, "%x", &intval);
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if (rc == 1) {
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yylval.v.ival = intval;
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yylval.v.dval = (double) intval;
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yylval.v.has_dval = 0;
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yylval.v.has_error = 0;
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return NUMBER;
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} else {
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yyerror(0, 0, 0, 0, "bad number\n");
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yylval.v.has_error = 1;
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return NUMBER;
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}
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}
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[0-9]+ {
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int rc, intval;
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rc = sscanf(yytext, "%d", &intval);
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if (rc == 1) {
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yylval.v.ival = intval;
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yylval.v.dval = (double) intval;
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yylval.v.has_dval = 0;
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yylval.v.has_error = 0;
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return NUMBER;
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} else {
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yyerror(0, 0, 0, 0, "bad number\n");
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yylval.v.has_error = 1;
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return NUMBER;
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}
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}
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\n return 0;
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[+-/*()^%] return yytext[0];
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. {
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yylval.v.has_error = 1;
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return NUMBER;
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}
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%%
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