ruleparser.java

jboss规则引擎

            case 48:
            case 49:
            case 50:
            case 51:
            case 52:
            case 53:
            case 54:
            case 55:
            case 59:
            case 60:
            case 61:
                alt17=1;
                break;
            default:
                NoViableAltException nvae =
                    new NoViableAltException("403:17: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )", 17, 0, input);

                throw nvae;
            }

            switch (alt17) {
                case 1 :
                    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:404:25: {...}? expander_lhs_block[lhs]
                    {
                    if ( !( expander != null ) ) {
                        throw new FailedPredicateException(input, "query", " expander != null ");
                    }
                    following.push(FOLLOW_expander_lhs_block_in_query550);
                    expander_lhs_block(lhs);
                    following.pop();


                    }
                    break;
                case 2 :
                    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:405:27: normal_lhs_block[lhs]
                    {
                    following.push(FOLLOW_normal_lhs_block_in_query558);
                    normal_lhs_block(lhs);
                    following.pop();


                    }
                    break;

            }

            match(input,29,FOLLOW_29_in_query573); 
            following.push(FOLLOW_opt_eol_in_query575);
            opt_eol();
            following.pop();


            }

        }
        catch (RecognitionException re) {
            reportError(re);
            recover(input,re);
        }
        finally {
        }
        return query;
    }
    // $ANTLR end query


    // $ANTLR start rule
    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:411:1: rule returns [RuleDescr rule] : opt_eol loc= 'rule' ruleName= word opt_eol ( rule_attributes[rule] )? opt_eol ( (loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )? ( opt_eol loc= 'then' ( ':' )? opt_eol ( options {greedy=false; } : any= . )* )? )? 'end' opt_eol ;
    public RuleDescr rule() throws RecognitionException {   
        RuleDescr rule;
        Token loc=null;
        Token any=null;
        String ruleName = null;



        		rule = null;
        		String consequence = "";
        	
        try {
            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:417:17: ( opt_eol loc= 'rule' ruleName= word opt_eol ( rule_attributes[rule] )? opt_eol ( (loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )? ( opt_eol loc= 'then' ( ':' )? opt_eol ( options {greedy=false; } : any= . )* )? )? 'end' opt_eol )
            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:417:17: opt_eol loc= 'rule' ruleName= word opt_eol ( rule_attributes[rule] )? opt_eol ( (loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )? ( opt_eol loc= 'then' ( ':' )? opt_eol ( options {greedy=false; } : any= . )* )? )? 'end' opt_eol
            {
            following.push(FOLLOW_opt_eol_in_rule598);
            opt_eol();
            following.pop();

            loc=(Token)input.LT(1);
            match(input,30,FOLLOW_30_in_rule604); 
            following.push(FOLLOW_word_in_rule608);
            ruleName=word();
            following.pop();

            following.push(FOLLOW_opt_eol_in_rule610);
            opt_eol();
            following.pop();

             
            			debug( "start rule: " + ruleName );
            			rule = new RuleDescr( ruleName, null ); 
            			rule.setLocation( offset(loc.getLine()), loc.getCharPositionInLine() );
            		
            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:424:17: ( rule_attributes[rule] )?
            int alt18=2;
            switch ( input.LA(1) ) {
            case 32:
            case 34:
                alt18=1;
                break;
            case EOL:
            case 15:
            case 24:
            case 35:
            case 36:
            case 37:
            case 38:
            case 39:
            case 40:
                alt18=1;
                break;
            case 31:
                alt18=1;
                break;
            case 33:
                alt18=1;
                break;
            case 29:
                alt18=1;
                break;
            default:
                NoViableAltException nvae =
                    new NoViableAltException("424:17: ( rule_attributes[rule] )?", 18, 0, input);

                throw nvae;
            }

            switch (alt18) {
                case 1 :
                    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:424:25: rule_attributes[rule]
                    {
                    following.push(FOLLOW_rule_attributes_in_rule621);
                    rule_attributes(rule);
                    following.pop();


                    }
                    break;

            }

            following.push(FOLLOW_opt_eol_in_rule631);
            opt_eol();
            following.pop();

            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:427:17: ( (loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )? ( opt_eol loc= 'then' ( ':' )? opt_eol ( options {greedy=false; } : any= . )* )? )?
            int alt25=2;
            int LA25_0 = input.LA(1);
            if ( LA25_0==EOL||LA25_0==15||LA25_0==31||LA25_0==33 ) {
                alt25=1;
            }
            else if ( LA25_0==29 ) {
                alt25=1;
            }
            else {
                NoViableAltException nvae =
                    new NoViableAltException("427:17: ( (loc= \'when\' ( \':\' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )? ( opt_eol loc= \'then\' ( \':\' )? opt_eol ( options {greedy=false; } : any= . )* )? )?", 25, 0, input);

                throw nvae;
            }
            switch (alt25) {
                case 1 :
                    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:427:18: (loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )? ( opt_eol loc= 'then' ( ':' )? opt_eol ( options {greedy=false; } : any= . )* )?
                    {
                    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:427:18: (loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )?
                    int alt21=2;
                    int LA21_0 = input.LA(1);
                    if ( LA21_0==31 ) {
                        alt21=1;
                    }
                    else if ( LA21_0==EOL||LA21_0==15||LA21_0==29||LA21_0==33 ) {
                        alt21=2;
                    }
                    else {
                        NoViableAltException nvae =
                            new NoViableAltException("427:18: (loc= \'when\' ( \':\' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] ) )?", 21, 0, input);

                        throw nvae;
                    }
                    switch (alt21) {
                        case 1 :
                            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:427:25: loc= 'when' ( ':' )? opt_eol ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )
                            {
                            loc=(Token)input.LT(1);
                            match(input,31,FOLLOW_31_in_rule640); 
                            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:427:36: ( ':' )?
                            int alt19=2;
                            int LA19_0 = input.LA(1);
                            if ( LA19_0==32 ) {
                                int LA19_1 = input.LA(2);
                                if ( !( expander != null ) ) {
                                    alt19=1;
                                }
                                else if (  expander != null  ) {
                                    alt19=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoViableAltException("427:36: ( \':\' )?", 19, 1, input);

                                    throw nvae;
                                }
                            }
                            else if ( (LA19_0>=EOL && LA19_0<=31)||(LA19_0>=33 && LA19_0<=61) ) {
                                alt19=2;
                            }
                            else {
                                NoViableAltException nvae =
                                    new NoViableAltException("427:36: ( \':\' )?", 19, 0, input);

                                throw nvae;
                            }
                            switch (alt19) {
                                case 1 :
                                    // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:427:36: ':'
                                    {
                                    match(input,32,FOLLOW_32_in_rule642); 

                                    }
                                    break;

                            }

                            following.push(FOLLOW_opt_eol_in_rule645);
                            opt_eol();
                            following.pop();

                             
                            				AndDescr lhs = new AndDescr(); rule.setLhs( lhs ); 
                            				lhs.setLocation( offset(loc.getLine()), loc.getCharPositionInLine() );
                            			
                            // /home/michael/projects/jboss-rules-3.0.x/drools-compiler/src/main/resources/org/drools/lang/drl.g:432:25: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )
                            int alt20=2;
                            switch ( input.LA(1) ) {
                            case 23:
                                int LA20_1 = input.LA(2);
                                if (  expander != null  ) {
                                    alt20=1;
                                }
                                else if ( true ) {
                                    alt20=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoViableAltException("432:25: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )", 20, 1, input);

                                    throw nvae;
                                }
                                break;
                            case EOL:
                                int LA20_2 = input.LA(2);
                                if (  expander != null  ) {
                                    alt20=1;
                                }
                                else if ( true ) {
                                    alt20=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoViableAltException("432:25: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )", 20, 2, input);

                                    throw nvae;
                                }
                                break;
                            case 15:
                                int LA20_3 = input.LA(2);
                                if (  expander != null  ) {
                                    alt20=1;
                                }
                                else if ( true ) {
                                    alt20=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoViableAltException("432:25: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )", 20, 3, input);

                                    throw nvae;
                                }
                                break;
                            case 33:
                                int LA20_4 = input.LA(2);
                                if (  expander != null  ) {
                                    alt20=1;
                                }
                                else if ( true ) {
                                    alt20=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoViableAltException("432:25: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )", 20, 4, input);

                                    throw nvae;
                                }
                                break;
                            case 29:
                                int LA20_5 = input.LA(2);
                                if (  expander != null  ) {
                                    alt20=1;
                                }
                                else if ( true ) {
                                    alt20=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoViableAltException("432:25: ({...}? expander_lhs_block[lhs] | normal_lhs_block[lhs] )", 20, 5, input);

                                    throw nvae;
                                }
                                break;
                            case 56:
                                int LA20_6 = input.LA(2);
                                if (  expander != null  ) {
                                    alt20=1;
                                }
                                else if ( true ) {
                                    alt20=2;
                                }
                                else {
                                    NoViableAltException nvae =
                                        new NoVia