![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/frontend/scanner.l b/src/frontend/scanner.l
--- a/src/frontend/scanner.l
+++ /dev/null
@@ -1,307 +0,0 @@
-/*
- * SysDB - src/frontend/scanner.l
- * Copyright (C) 2013 Sebastian 'tokkee' Harl <sh@tokkee.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-%{
-
-#if HAVE_CONFIG_H
-# include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include "core/data.h"
-#include "frontend/connection.h"
-#include "frontend/parser.h"
-#include "frontend/grammar.h"
-#include "utils/error.h"
-
-#include <assert.h>
-#include <errno.h>
-
-#include <string.h>
-#include <stdlib.h>
-
-#include <time.h>
-
-#define YY_EXTRA_TYPE sdb_fe_yyextra_t *
-
-static struct {
- const char *name;
- int id;
-} reserved_words[] = {
- { "ALL", ALL },
- { "AND", AND },
- { "ANY", ANY },
- { "END", END },
- { "FETCH", FETCH },
- { "FILTER", FILTER },
- { "IN", IN },
- { "IS", IS },
- { "LAST", LAST },
- { "LIST", LIST },
- { "LOOKUP", LOOKUP },
- { "MATCHING", MATCHING },
- { "NOT", NOT },
- { "NULL", NULL_T },
- { "OR", OR },
- { "START", START },
- { "STORE", STORE },
- { "TIMESERIES", TIMESERIES },
- { "UPDATE", UPDATE },
-
- /* object types */
- { "host", HOST_T },
- { "hosts", HOSTS_T },
- { "service", SERVICE_T },
- { "services", SERVICES_T },
- { "metric", METRIC_T },
- { "metrics", METRICS_T },
- { "attribute", ATTRIBUTE_T },
- { "attributes", ATTRIBUTES_T },
- /* queryable fields */
- { "name", NAME_T },
- { "last_update", LAST_UPDATE_T },
- { "age", AGE_T },
- { "interval", INTERVAL_T },
- { "backend", BACKEND_T },
- { "value", VALUE_T },
-};
-
-void
-sdb_fe_yyerror(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *msg);
-
-%}
-
-%option never-interactive
-%option reentrant
-%option bison-bridge
-%option bison-locations
-%option 8bit
-%option yylineno
-%option nodefault
-%option noinput
-%option nounput
-%option noyywrap
-%option verbose
-%option warn
-%option prefix="sdb_fe_yy" outfile="lex.yy.c"
-
-%x CSC
-
-whitespace ([ \t\n\r\f]+)
-simple_comment ("--"[^\n\r]*)
-
-/*
- * C style comments
- */
-csc_start \/\*
-csc_inside ([^*/]+|[^*]\/|\*[^/])
-csc_end \*\/
-
-/*
- * Strings and identifiers.
- */
-identifier ([A-Za-z_][A-Za-z_0-9$]*)
-/* TODO: fully support SQL strings */
-string ('([^']|'')*')
-
-/*
- * Numeric constants.
- */
-dec ([\+\-]?[0-9]+)
-exp ([\+\-]?[0-9]+[Ee]\+?[0-9]+)
-integer ({dec}|{exp})
-float1 ([\+\-]?[0-9]+\.[0-9]*([Ee][\+\-]?[0-9]+)?)
-float2 ([\+\-]?[0-9]*\.[0-9]+([Ee][\+\-]?[0-9]+)?)
-float3 ([\+\-]?[0-9]+[Ee]\-[0-9]+)
-float4 ([\+\-]?[Ii][Nn][Ff]([Ii][Nn][Ii][Tt][Yy])?)
-float5 ([Nn][Aa][Nn])
-float ({float1}|{float2}|{float3}|{float4}|{float5})
-
-/*
- * Time constants.
- */
-date ([0-9]{4}-[0-9]{2}-[0-9]{2})
-time ([0-9]{1,2}:[0-9]{1,2}(:[0-9]{1,2}(\.[0-9]{1,9})?)?)
-
-%%
-
-{whitespace} |
-{simple_comment} { /* ignore */ }
-
-{csc_start} { BEGIN(CSC); }
-<CSC>{csc_inside} { /* ignore */ }
-<CSC>{csc_end} { BEGIN(INITIAL); }
-<CSC><<EOF>> {
- sdb_fe_yyerror(yylloc, yyscanner, "unterminated C-style comment");
- return SCANNER_ERROR;
- }
-
-{identifier} {
- size_t i;
- for (i = 0; i < SDB_STATIC_ARRAY_LEN(reserved_words); ++i)
- if (! strcasecmp(reserved_words[i].name, yytext))
- return reserved_words[i].id;
-
- yylval->str = strdup(yytext);
- return IDENTIFIER;
- }
-{string} {
- char *quot;
- size_t len;
-
- /* remove the leading and trailing quote */
- yytext[yyleng - 1] = '\0';
- yylval->str = strdup(yytext + 1);
-
- quot = yylval->str;
- len = yyleng - 2;
- while ((quot = strstr(quot, "''")) != NULL) {
- memmove(quot, quot + 1, len - (quot - yylval->str) - 1);
- yylval->str[len - 1] = '\0';
- --len;
- ++quot;
- }
- return STRING;
- }
-{integer} {
- yylval->data.data.integer = (int64_t)strtoll(yytext, NULL, 10);
- yylval->data.type = SDB_TYPE_INTEGER;
- return INTEGER;
- }
-{float} {
- yylval->data.data.decimal = strtod(yytext, NULL);
- yylval->data.type = SDB_TYPE_DECIMAL;
- return FLOAT;
- }
-
-{date} {
- struct tm tm;
- memset(&tm, 0, sizeof(tm));
- if (! strptime(yytext, "%Y-%m-%d", &tm)) {
- char errmsg[1024];
- snprintf(errmsg, sizeof(errmsg),
- "Failed to parse '%s' as date", yytext);
- sdb_fe_yyerror(yylloc, yyscanner, errmsg);
- return SCANNER_ERROR;
- }
- yylval->datetime = SECS_TO_SDB_TIME(mktime(&tm));
- return DATE;
- }
-{time} {
- struct tm tm;
- char time[9], ns[10];
- char *tmp;
- int t;
-
- memset(&tm, 0, sizeof(tm));
- memset(time, '\0', sizeof(time));
- memset(ns, '0', sizeof(ns));
- ns[sizeof(ns) - 1] = '\0';
-
- tmp = strchr(yytext, '.');
- if (tmp) {
- size_t i;
- *tmp = '\0';
- ++tmp;
- strncpy(ns, tmp, sizeof(ns));
- for (i = strlen(ns); i < 9; ++i)
- ns[i] = '0';
- }
- strncpy(time, yytext, sizeof(time));
- if (tmp) {
- /* reset for better error messages */
- --tmp;
- *tmp = '.';
- }
-
- tmp = strchr(time, ':');
- assert(tmp);
- tmp = strchr(tmp + 1, ':');
- if (! tmp)
- strncat(time, ":00", sizeof(time) - strlen(time) - 1);
-
- if (! strptime(time, "%H:%M:%S", &tm)) {
- char errmsg[1024];
- snprintf(errmsg, sizeof(errmsg),
- "Failed to parse '%s' as time", yytext);
- sdb_fe_yyerror(yylloc, yyscanner, errmsg);
- return SCANNER_ERROR;
- }
-
- t = tm.tm_sec + 60 * tm.tm_min + 3600 * tm.tm_hour;
- yylval->datetime = SECS_TO_SDB_TIME(t);
- yylval->datetime += (sdb_time_t)strtoll(ns, NULL, 10);
- return TIME;
- }
-
-= { return CMP_EQUAL; }
-!= { return CMP_NEQUAL; }
-=~ { return CMP_REGEX; }
-!~ { return CMP_NREGEX; }
-\< { return CMP_LT; }
-\<= { return CMP_LE; }
-\>= { return CMP_GE; }
-\> { return CMP_GT; }
-\|\| { return CONCAT; }
-
-. { /* XXX: */ return yytext[0]; }
-
-%%
-
-sdb_fe_yyscan_t
-sdb_fe_scanner_init(const char *str, int len, sdb_fe_yyextra_t *yyext)
-{
- yyscan_t scanner;
-
- if (! str)
- return NULL;
-
- if (sdb_fe_yylex_init(&scanner)) {
- char errbuf[1024];
- sdb_strbuf_sprintf(yyext->errbuf, "yylex_init_failed: %s",
- sdb_strerror(errno, errbuf, sizeof(errbuf)));
- return NULL;
- }
-
- sdb_fe_yyset_extra(yyext, scanner);
-
- if (len < 0)
- len = strlen(str);
-
- /* the newly allocated buffer state (YY_BUFFER_STATE) is stored inside the
- * scanner and, thus, will be freed by yylex_destroy */
- sdb_fe_yy_scan_bytes(str, len, scanner);
- return scanner;
-} /* sdb_fe_scanner_init */
-
-void
-sdb_fe_scanner_destroy(sdb_fe_yyscan_t scanner)
-{
- sdb_fe_yylex_destroy(scanner);
-} /* sdb_fe_scanner_destroy */
-
-/* vim: set tw=78 sw=4 ts=4 noexpandtab : */
-