//### This file created by BYACC 1.8(/Java extension 1.13)
//### Java capabilities added 7 Jan 97, Bob Jamison
//### Updated : 27 Nov 97 -- Bob Jamison, Joe Nieten
//### 01 Jan 98 -- Bob Jamison -- fixed generic semantic constructor
//### 01 Jun 99 -- Bob Jamison -- added Runnable support
//### 06 Aug 00 -- Bob Jamison -- made state variables class-global
//### 03 Jan 01 -- Bob Jamison -- improved flags, tracing
//### 16 May 01 -- Bob Jamison -- added custom stack sizing
//### 04 Mar 02 -- Yuval Oren -- improved java performance, added options
//### 14 Mar 02 -- Tomas Hurka -- -d support, static initializer workaround
//### Please send bug reports to tom@hukatronic.cz
//### static char yysccsid[] = "@(#)yaccpar 1.8 (Berkeley) 01/20/90";
package org.eun.plql.layer0;
//#line 1 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
/*
Copyright (C) 2006 David Massart and Chea Sereyvath, European Schoolnet
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
import java.io.IOException;
import java.io.Reader;
public class PlqlLayer0Analyzer
{
boolean yydebug; //do I want debug output?
int yynerrs; //number of errors so far
int yyerrflag; //was there an error?
int yychar; //the current working character
//########## MESSAGES ##########
//###############################################################
// method: debug
//###############################################################
void debug(String msg)
{
if (yydebug)
System.out.println(msg);
}
//########## STATE STACK ##########
final static int YYSTACKSIZE = 500; //maximum stack size
int statestk[] = new int[YYSTACKSIZE]; //state stack
int stateptr;
int stateptrmax; //highest index of stackptr
int statemax; //state when highest index reached
//###############################################################
// methods: state stack push,pop,drop,peek
//###############################################################
final void state_push(int state)
{
try {
stateptr++;
statestk[stateptr]=state;
}
catch (ArrayIndexOutOfBoundsException e) {
int oldsize = statestk.length;
int newsize = oldsize * 2;
int[] newstack = new int[newsize];
System.arraycopy(statestk,0,newstack,0,oldsize);
statestk = newstack;
statestk[stateptr]=state;
}
}
final int state_pop()
{
return statestk[stateptr--];
}
final void state_drop(int cnt)
{
stateptr -= cnt;
}
final int state_peek(int relative)
{
return statestk[stateptr-relative];
}
//###############################################################
// method: init_stacks : allocate and prepare stacks
//###############################################################
final boolean init_stacks()
{
stateptr = -1;
val_init();
return true;
}
//###############################################################
// method: dump_stacks : show n levels of the stacks
//###############################################################
void dump_stacks(int count)
{
int i;
System.out.println("=index==state====value= s:"+stateptr+" v:"+valptr);
for (i=0;i<count;i++)
System.out.println(" "+i+" "+statestk[i]+" "+valstk[i]);
System.out.println("======================");
}
//########## SEMANTIC VALUES ##########
//public class PlqlLayer0AnalyzerVal is defined in PlqlLayer0AnalyzerVal.java
String yytext;//user variable to return contextual strings
PlqlLayer0AnalyzerVal yyval; //used to return semantic vals from action routines
PlqlLayer0AnalyzerVal yylval;//the 'lval' (result) I got from yylex()
PlqlLayer0AnalyzerVal valstk[];
int valptr;
//###############################################################
// methods: value stack push,pop,drop,peek.
//###############################################################
void val_init()
{
valstk=new PlqlLayer0AnalyzerVal[YYSTACKSIZE];
yyval=new PlqlLayer0AnalyzerVal();
yylval=new PlqlLayer0AnalyzerVal();
valptr=-1;
}
void val_push(PlqlLayer0AnalyzerVal val)
{
if (valptr>=YYSTACKSIZE)
return;
valstk[++valptr]=val;
}
PlqlLayer0AnalyzerVal val_pop()
{
if (valptr<0)
return new PlqlLayer0AnalyzerVal();
return valstk[valptr--];
}
void val_drop(int cnt)
{
int ptr;
ptr=valptr-cnt;
if (ptr<0)
return;
valptr = ptr;
}
PlqlLayer0AnalyzerVal val_peek(int relative)
{
int ptr;
ptr=valptr-relative;
if (ptr<0)
return new PlqlLayer0AnalyzerVal();
return valstk[ptr];
}
//#### end semantic value section ####
public final static short NL=257;
public final static short CHARSTRING1=258;
public final static short CHARSTRING2=259;
public final static short AND=260;
public final static short LEFT_PATENTHESIS=261;
public final static short RIGHT_PATENTHESIS=262;
public final static short INTEGER=263;
public final static short REAL=264;
public final static short YYERRCODE=256;
final static short yylhs[] = { -1,
0, 1, 1, 1, 2, 3, 3, 3, 3, 4,
5, 6, 7, 8, 9,
};
final static short yylen[] = { 2,
1, 1, 3, 3, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1,
};
final static short yydefred[] = { 0,
12, 13, 0, 14, 15, 0, 0, 2, 5, 6,
7, 10, 11, 8, 9, 0, 0, 3, 0,
};
final static short yydgoto[] = { 6,
7, 8, 9, 10, 11, 12, 13, 14, 15,
};
final static short yysindex[] = { -256,
0, 0, -256, 0, 0, 0, -254, 0, 0, 0,
0, 0, 0, 0, 0, -251, -256, 0, -254,
};
final static short yyrindex[] = { 0,
0, 0, 0, 0, 0, 0, 4, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 1,
};
final static short yygindex[] = { 0,
-3, 0, 0, 0, 0, 0, 0, 0, 0,
};
final static int YYTABLESIZE=263;
static short yytable[];
static { yytable();}
static void yytable(){
yytable = new short[]{ 16,
4, 1, 2, 1, 3, 17, 4, 5, 17, 0,
18, 0, 0, 19, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 4,
};
}
static short yycheck[];
static { yycheck(); }
static void yycheck() {
yycheck = new short[] { 3,
0, 258, 259, 0, 261, 260, 263, 264, 260, -1,
262, -1, -1, 17, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, 262,
};
}
final static short YYFINAL=6;
final static short YYMAXTOKEN=264;
final static String yyname[] = {
"end-of-file",null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,
null,null,null,"NL","CHARSTRING1","CHARSTRING2","AND","LEFT_PATENTHESIS",
"RIGHT_PATENTHESIS","INTEGER","REAL",
};
final static String yyrule[] = {
"$accept : plql",
"plql : clause",
"clause : keywordClause",
"clause : LEFT_PATENTHESIS clause RIGHT_PATENTHESIS",
"clause : clause AND clause",
"keywordClause : operand",
"operand : term1",
"operand : term2",
"operand : integer",
"operand : real",
"term1 : charString1",
"term2 : charString2",
"charString1 : CHARSTRING1",
"charString2 : CHARSTRING2",
"integer : INTEGER",
"real : REAL",
};
//#line 101 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
private PlqlLayer0Parser lexer ;
private String keyword1 ;
private String query ;
private static boolean DISPLAY_OUTPUT = false;
private int yylex () {
int yyl_return = -1;
try {
yylval = new PlqlLayer0AnalyzerVal(0);
yyl_return = lexer.yylex();
}
catch (IOException e) {
System.err.println("IO error :"+e);
}
return yyl_return;
}
public void yyerror (String error) {
System.err.println ("Syntax Error\n" + error);
}
public PlqlLayer0Analyzer(Reader r) {
lexer = new PlqlLayer0Parser(r, this);
}
public void parse()
{
yyparse() ;
}
public String getQuery()
{
return query ;
}
//#line 289 "PlqlLayer0Analyzer.java"
//###############################################################
// method: yylexdebug : check lexer state
//###############################################################
void yylexdebug(int state,int ch)
{
String s=null;
if (ch < 0) ch=0;
if (ch <= YYMAXTOKEN) //check index bounds
s = yyname[ch]; //now get it
if (s==null)
s = "illegal-symbol";
debug("state "+state+", reading "+ch+" ("+s+")");
}
//The following are now global, to aid in error reporting
int yyn; //next next thing to do
int yym; //
int yystate; //current parsing state from state table
String yys; //current token string
//###############################################################
// method: yyparse : parse input and execute indicated items
//###############################################################
int yyparse()
{
boolean doaction;
init_stacks();
yynerrs = 0;
yyerrflag = 0;
yychar = -1; //impossible char forces a read
yystate=0; //initial state
state_push(yystate); //save it
while (true) //until parsing is done, either correctly, or w/error
{
doaction=true;
if (yydebug) debug("loop");
//#### NEXT ACTION (from reduction table)
for (yyn=yydefred[yystate];yyn==0;yyn=yydefred[yystate])
{
if (yydebug) debug("yyn:"+yyn+" state:"+yystate+" yychar:"+yychar);
if (yychar < 0) //we want a char?
{
yychar = yylex(); //get next token
if (yydebug) debug(" next yychar:"+yychar);
//#### ERROR CHECK ####
if (yychar < 0) //it it didn't work/error
{
yychar = 0; //change it to default string (no -1!)
if (yydebug)
yylexdebug(yystate,yychar);
}
}//yychar<0
yyn = yysindex[yystate]; //get amount to shift by (shift index)
if ((yyn != 0) && (yyn += yychar) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
{
if (yydebug)
debug("state "+yystate+", shifting to state "+yytable[yyn]);
//#### NEXT STATE ####
yystate = yytable[yyn];//we are in a new state
state_push(yystate); //save it
val_push(yylval); //push our lval as the input for next rule
yychar = -1; //since we have 'eaten' a token, say we need another
if (yyerrflag > 0) //have we recovered an error?
--yyerrflag; //give ourselves credit
doaction=false; //but don't process yet
break; //quit the yyn=0 loop
}
yyn = yyrindex[yystate]; //reduce
if ((yyn !=0 ) && (yyn += yychar) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == yychar)
{ //we reduced!
if (yydebug) debug("reduce");
yyn = yytable[yyn];
doaction=true; //get ready to execute
break; //drop down to actions
}
else //ERROR RECOVERY
{
if (yyerrflag==0)
{
yyerror("syntax error");
yynerrs++;
}
if (yyerrflag < 3) //low error count?
{
yyerrflag = 3;
while (true) //do until break
{
if (stateptr<0) //check for under & overflow here
{
yyerror("stack underflow. aborting..."); //note lower case 's'
return 1;
}
yyn = yysindex[state_peek(0)];
if ((yyn != 0) && (yyn += YYERRCODE) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == YYERRCODE)
{
if (yydebug)
debug("state "+state_peek(0)+", error recovery shifting to state "+yytable[yyn]+" ");
yystate = yytable[yyn];
state_push(yystate);
val_push(yylval);
doaction=false;
break;
}
else
{
if (yydebug)
debug("error recovery discarding state "+state_peek(0)+" ");
if (stateptr<0) //check for under & overflow here
{
yyerror("Stack underflow. aborting..."); //capital 'S'
return 1;
}
state_pop();
val_pop();
}
}
}
else //discard this token
{
if (yychar == 0)
return 1; //yyabort
if (yydebug)
{
yys = null;
if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
if (yys == null) yys = "illegal-symbol";
debug("state "+yystate+", error recovery discards token "+yychar+" ("+yys+")");
}
yychar = -1; //read another
}
}//end error recovery
}//yyn=0 loop
if (!doaction) //any reason not to proceed?
continue; //skip action
yym = yylen[yyn]; //get count of terminals on rhs
if (yydebug)
debug("state "+yystate+", reducing "+yym+" by rule "+yyn+" ("+yyrule[yyn]+")");
if (yym>0) //if count of rhs not 'nil'
yyval = val_peek(yym-1); //get current semantic value
switch(yyn)
{
//########## USER-SUPPLIED ACTIONS ##########
case 1:
//#line 53 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{yyval.sval = val_peek(0).sval;
query = yyval.sval ;}
break;
case 2:
//#line 57 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{}
break;
case 3:
//#line 58 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{ val_peek(2).sval = " ( " + val_peek(1).sval + " ) ";}
break;
case 4:
//#line 59 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{ val_peek(2).sval = val_peek(2).sval + " AND " + val_peek(0).sval;}
break;
case 5:
//#line 62 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{}
break;
case 10:
//#line 72 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{}
break;
case 11:
//#line 75 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{}
break;
case 12:
//#line 78 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{
keyword1 = val_peek(0).sval;
yyval.sval = keyword1;
}
break;
case 13:
//#line 84 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{
keyword1 = val_peek(0).sval;
yyval.sval = keyword1;
}
break;
case 14:
//#line 90 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{
int number = val_peek(0).ival;
yyval.sval = ""+number;
}
break;
case 15:
//#line 96 "/Sandbox/eclipse/hmdb/plql2lucene/plql_layer0/src/conf/Layer0.y"
{
double number = val_peek(0).dval;
yyval.sval = ""+number;
}
break;
//#line 493 "PlqlLayer0Analyzer.java"
//########## END OF USER-SUPPLIED ACTIONS ##########
}//switch
//#### Now let's reduce... ####
if (yydebug) debug("reduce");
state_drop(yym); //we just reduced yylen states
yystate = state_peek(0); //get new state
val_drop(yym); //corresponding value drop
yym = yylhs[yyn]; //select next TERMINAL(on lhs)
if (yystate == 0 && yym == 0)//done? 'rest' state and at first TERMINAL
{
if (yydebug) debug("After reduction, shifting from state 0 to state "+YYFINAL+"");
yystate = YYFINAL; //explicitly say we're done
state_push(YYFINAL); //and save it
val_push(yyval); //also save the semantic value of parsing
if (yychar < 0) //we want another character?
{
yychar = yylex(); //get next character
if (yychar<0) yychar=0; //clean, if necessary
if (yydebug)
yylexdebug(yystate,yychar);
}
if (yychar == 0) //Good exit (if lex returns 0 ;-)
break; //quit the loop--all DONE
}//if yystate
else //else not done yet
{ //get next state and push, for next yydefred[]
yyn = yygindex[yym]; //find out where to go
if ((yyn != 0) && (yyn += yystate) >= 0 &&
yyn <= YYTABLESIZE && yycheck[yyn] == yystate)
yystate = yytable[yyn]; //get new state
else
yystate = yydgoto[yym]; //else go to new defred
if (yydebug) debug("after reduction, shifting from state "+state_peek(0)+" to state "+yystate+"");
state_push(yystate); //going again, so push state & val...
val_push(yyval); //for next action
}
}//main loop
return 0;//yyaccept!!
}
//## end of method parse() ######################################
//## run() --- for Thread #######################################
/**
* A default run method, used for operating this parser
* object in the background. It is intended for extending Thread
* or implementing Runnable. Turn off with -Jnorun .
*/
public void run()
{
yyparse();
}
//## end of method run() ########################################
//## Constructors ###############################################
/**
* Default constructor. Turn off with -Jnoconstruct .
*/
public PlqlLayer0Analyzer()
{
//nothing to do
}
/**
* Create a parser, setting the debug to true or false.
* @param debugMe true for debugging, false for no debug.
*/
public PlqlLayer0Analyzer(boolean debugMe)
{
yydebug=debugMe;
}
//###############################################################
}
//################### END OF CLASS ##############################