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1 package com.daffodilwoods.daffodildb.utils.parser;
2
3 import com.daffodilwoods.daffodildb.server.sql99.token._TOKEN;
4 import com.daffodilwoods.daffodildb.server.sql99.token.regularidentifier;
5 import com.daffodilwoods.database.resource.*;
6 import com.daffodilwoods.database.utility.P;
7
8 public class TokenProductionRule extends ProductionRules implements _TOKEN {
9
10 String  name;
11 char []array;
12 private int Type;
13
14 public TokenProductionRule(String productionRuleName,String name,
15 char[] array,ClassLoader classLoader0,int type0)
16 {
17 super(classLoader0);
18 nameOfRule = name;
19 Type = type0;
20 this.name = productionRuleName;
21 this.array = array;
22 }
23
24 public int getType(){
25 return Type;
26 }
27
28
29 public String toString(){
30 return nameOfRule;
31 }
32
33 public Object getComparableObject(){
34 return result;
35 }
36
37 public Object getComparableObjectArray(){
38 if ( result instanceof String [] )
39 return result;
40 return new String []{(String )result};
41 }
42
43 Object parsePart(ParseElements pe){
44 if ( pe.position > (pe.tokens.length - 1) ){
45 pe.parseException.setPosition(pe.getIndexPosition(pe.position));
46 return pe.parseException;
47 }
48 int cmp = checkString(pe.queryTokenCharacterArray[pe.position],array,pe.position);
49 if ( cmp == 0 ){
50 pe.position++;
51 return pe.tokens[(pe.position)-1];
52 }
53 cmp = cmp > 0 ? 1 : cmp < 0 ? -1 : 0;
54 if ( Type == 4 && (((_TOKEN)pe.tokens[pe.position]).getType() == _TOKEN.NONRESERVEDWORD ) )
55 cmp = 1;
56 else if ( Type == 3 && (((_TOKEN)pe.tokens[pe.position]).getType() == _TOKEN.NONRESERVEDWORD ) ){
57 return getRegularIdenifier(pe);
58 }
59 pe.parseException.setPosition(pe.getIndexPosition(pe.position));
60 pe.parseException.setReturnType(cmp);
61 return pe.parseException;
62 }
63
64 private regularidentifier getRegularIdenifier(ParseElements pe){
65 regularidentifier ri = new regularidentifier();
66 ri._regularidentifier0 = pe.tokens[pe.position].toString().trim();
67 ++pe.position;
68 return ri;
69 }
70
71 private int checkString(char []source, char[] target,int position){
72
77 int compare = 0;
78 for(int i = 0,j = 0; i < source.length && j < target.length && compare == 0; ++j,++i)
79 compare = source[i] - target[j];
80 if (compare != 0 )
81 return compare;
82 return source.length - target.length;
83 }
84 }
85
86
87 |
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