161 lines
5.4 KiB
Plaintext
161 lines
5.4 KiB
Plaintext
/*
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----
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This file is part of SECONDO.
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Copyright (C) 2004, University in Hagen, Department of Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO 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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You should have received a copy of the GNU General Public License
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along with SECONDO; 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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//paragraph [1] Title: [{\Large \bf \begin {center}] [\end {center}}]
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//[TOC] [\tableofcontents]
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Started March 2012, Fabio Vald\'{e}s
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[TOC]
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\section{Overview}
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This is the lex file that does the lexical analysis for the Symbolic Trajectory
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Algebra.
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TODO: process double quotes separately in conditions.
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*/
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%{
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#include "PatternParser.tab.h"
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#include <iostream>
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#include <string>
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using namespace std;
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void deleteCurrentPatternBuffer() {
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yy_delete_buffer(YY_CURRENT_BUFFER);
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}
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int openParentheses = 0;
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int openBrackets = 0;
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bool openQuotes = false;
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%}
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%option prefix="pattern"
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%option nounput
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%x condition
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%x result
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%x assignment
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si [+-]?[0-9]+
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ui [0-9]+
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real {si}+(\.{ui}+)?
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num {si}|{ui}|{real}
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numinterval <{num}{num}(t\ f)?>|<{num}{num}>|{num}
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star \*
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plus \+
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attrname [A-Z][a-zA-Z]*
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setrelation disjoint|superset|equal|intersect
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wildcard {star}|{plus}
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date {si}(-{ui}(-{ui}(-{ui}(\:{ui})(\:{ui}(\.{ui})?)?)?)?)?
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time {ui}\:{ui}(\:{ui}(\.{ui})?)?
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interval ({date}(\~{date})?)|\~{date}|{date}\~|([a-z_][a-zA-Z0-9_]*)|\~{time}|{time}\~|{time}\~{time}
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intervalset {interval}|(\{{interval}(\,[ ]*{interval})*\})
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label ([a-zA-Z_\-][a-zA-Z0-9_\-]*)|(\"|\')[a-zA-Z0-9\. \ß\ä\ö\ü\Ä\Ö\Ü\/\(\)\[\]\{\}_\-\*\:\ô\í\ó\à\á\ã\ê\é\ç\ó\õ\ú\´\`]*(\"|\')
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value {label}|{const_op}|{numinterval}|{si}|\_
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labelset {label}|(({setrelation})?\{{label}(\,[ ]*{label})*\})
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valueset {value}|(({setrelation})?\{{value}(\,[ ]*{value})*\})
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contents {intervalset}([\ ]*{valueset})+
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variable [A-Z][a-zA-Z0-9_\-]*
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doubleslash \/{2}
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conditiontype label|time|start|end|leftclosed|rightclosed|card|labels|extent|{attrname}
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assigntype label|time|start|end|leftclosed|rightclosed|labels|ref|extent
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vardottype {variable}\.{conditiontype}
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vardottype2 {variable}\.{assigntype}
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rightarrow =>
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const_op ([^A-Z\(\)\[\]\,\"\t\n ][^\(\)\[\]\,\"\t\n ]+)|{num}|<|>|>=|<=|=|#|\+|\-|\*|TRUE|FALSE|\"[a-zA-Z0-9\. \ß\ä\ö\ü\Ä\Ö\Ü\/\(\)\[\]\{\}_\-]*\"
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assign \:=
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openregex \[
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closeregex (\]\+)|(\]\*)|(\]\?)|\]
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%option yylineno
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%option noyywrap
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%%
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<INITIAL>[ \a\b\f\t\v\r]+ {}
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<INITIAL>\( {return '(';}
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<INITIAL>\) {return ')';}
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<INITIAL>{openregex} {patternlval.text = strdup(patterntext); return ZZOPENREGEX;}
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<INITIAL>{closeregex} {patternlval.text = strdup(patterntext); return ZZCLOSEREGEX;}
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<INITIAL>{variable} {patternlval.text = strdup(patterntext); return ZZVARIABLE;}
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<INITIAL>{wildcard} {patternlval.text = strdup(patterntext); return ZZWILDCARD;}
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<INITIAL>{contents} {patternlval.text = strdup(patterntext); return ZZCONTENTS;}
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<INITIAL>\| {return '|';}
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<INITIAL>{rightarrow} {BEGIN(result); return ZZRIGHTARROW;}
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<INITIAL>\n {return ZZEND;}
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<INITIAL>{doubleslash} {BEGIN(condition); return ZZDOUBLESLASH;}
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<condition>{vardottype} {patternlval.text = strdup(patterntext); return ZZVAR_DOT_TYPE;}
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<condition>{attrname} {patternlval.text = strdup(patterntext); return ZZATTRNAME;}
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<condition>{rightarrow} {BEGIN(result); return ZZRIGHTARROW;}
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<condition>{const_op} {patternlval.text = strdup(patterntext); return ZZCONST_OP;}
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<condition>\, {if (!openQuotes && openParentheses == 0 && openBrackets == 0) {
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return ',';
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}
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else {
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return ZZCOMMA;
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}
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}
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<condition>\( {if (!openQuotes) {
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++openParentheses;
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return '(';
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}
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}
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<condition>\) {if (!openQuotes) {
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--openParentheses;
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return ')';
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}
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}
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<condition>\[ {if (!openQuotes) {
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++openBrackets;
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return '[';
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}
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}
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<condition>\] {if (!openQuotes) {
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--openBrackets;
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return ']';
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}
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}
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<condition>\" {openQuotes = !openQuotes;}
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<condition>\n {BEGIN(INITIAL); return ZZEND;}
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<result>{variable} {patternlval.text = strdup(patterntext); return ZZVARIABLE;}
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<result>\( {return '(';}
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<result>\) {return ')';}
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<result>{doubleslash} {BEGIN(assignment); return ZZDOUBLESLASH;}
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<result>\n {BEGIN(INITIAL); return ZZEND;}
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<assignment>[ \a\b\f\t\v\r]+ {}
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<assignment>{vardottype2} {patternlval.text = strdup(patterntext); return ZZVAR_DOT_TYPE;}
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<assignment>{assign} {return ZZASSIGN;}
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<assignment>{const_op} {patternlval.text = strdup(patterntext); return ZZCONST_OP;}
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<assignment>\, {return ',';}
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<assignment>\( {return '(';}
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<assignment>\) {return ')';}
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<assignment>\[ {return '[';}
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<assignment>\] {return ']';}
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<assignment>\n {BEGIN(INITIAL); return ZZEND;}
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<INITIAL>. {patternlval.text = strdup(patterntext); BEGIN(INITIAL); return ZZERROR;}
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%%
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namespace stj {
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void patternFlushBuffer() {
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BEGIN(INITIAL);
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}
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}
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