1 | package java_cup.runtime;
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2 |
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3 | /**
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4 | * Default Implementation for SymbolFactory, creates
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5 | * plain old Symbols
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6 | *
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7 | * @version last updated 27-03-2006
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8 | * @author Michael Petter
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9 | */
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10 |
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11 | /* *************************************************
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12 | class DefaultSymbolFactory
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13 |
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14 | interface for creating new symbols
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15 | ***************************************************/
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16 | public class ComplexSymbolFactory implements SymbolFactory{
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17 | public static class Location {
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18 | private String unit="unknown";
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19 | private int line, column;
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20 | public Location(String unit, int line, int column){
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21 | this.unit=unit;
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22 | this.line=line;
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23 | this.column=column;
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24 | }
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25 | public Location(int line, int column){
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26 | this.line=line;
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27 | this.column=column;
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28 | }
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29 | public String toString(){
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30 | return unit+":"+line+"/"+column;
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31 | }
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32 | public int getColumn(){
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33 | return column;
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34 | }
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35 | public int getLine(){
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36 | return line;
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37 | }
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38 | public String getUnit(){
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39 | return unit;
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40 | }
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41 | }
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42 | /**
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43 | * ComplexSymbol with detailed Location Informations and a Name
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44 | */
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45 | public static class ComplexSymbol extends Symbol {
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46 | protected String name;
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47 | protected Location xleft,xright;
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48 | public ComplexSymbol(String name, int id) {
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49 | super(id);
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50 | this.name=name;
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51 | }
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52 | public ComplexSymbol(String name, int id, Object value) {
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53 | super(id,value);
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54 | this.name=name;
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55 | }
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56 | public String toString(){
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57 | if (xleft==null || xright==null) return "Symbol: "+name;
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58 | return "Symbol: "+name+" ("+xleft+" - "+xright+")";
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59 | }
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60 | public ComplexSymbol(String name, int id, int state) {
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61 | super(id,state);
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62 | this.name=name;
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63 | }
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64 | public ComplexSymbol(String name, int id, Symbol left, Symbol right) {
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65 | super(id,left,right);
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66 | this.name=name;
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67 | if (left!=null) this.xleft = ((ComplexSymbol)left).xleft;
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68 | if (right!=null) this.xright= ((ComplexSymbol)right).xright;
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69 | }
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70 | public ComplexSymbol(String name, int id, Location left, Location right) {
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71 | super(id);
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72 | this.name=name;
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73 | this.xleft=left;
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74 | this.xright=right;
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75 | }
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76 | public ComplexSymbol(String name, int id, Symbol left, Symbol right, Object value) {
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77 | super(id,value);
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78 | this.name=name;
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79 | if (left!=null) this.xleft = ((ComplexSymbol)left).xleft;
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80 | if (right!=null) this.xright= ((ComplexSymbol)right).xright;
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81 | }
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82 | public ComplexSymbol(String name, int id, Location left, Location right, Object value) {
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83 | super(id,value);
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84 | this.name=name;
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85 | this.xleft=left;
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86 | this.xright=right;
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87 | }
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88 | public Location getLeft(){
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89 | return xleft;
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90 | }
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91 | public Location getRight(){
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92 | return xright;
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93 | }
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94 | }
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95 |
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96 |
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97 | // Factory methods
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98 | public Symbol newSymbol(String name, int id, Location left, Location right, Object value){
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99 | return new ComplexSymbol(name,id,left,right,value);
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100 | }
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101 | public Symbol newSymbol(String name, int id, Location left, Location right){
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102 | return new ComplexSymbol(name,id,left,right);
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103 | }
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104 | public Symbol newSymbol(String name, int id, Symbol left, Symbol right, Object value){
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105 | return new ComplexSymbol(name,id,left,right,value);
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106 | }
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107 | public Symbol newSymbol(String name, int id, Symbol left, Symbol right){
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108 | return new ComplexSymbol(name,id,left,right);
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109 | }
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110 | public Symbol newSymbol(String name, int id){
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111 | return new ComplexSymbol(name,id);
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112 | }
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113 | public Symbol newSymbol(String name, int id, Object value){
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114 | return new ComplexSymbol(name,id,value);
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115 | }
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116 | public Symbol startSymbol(String name, int id, int state){
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117 | return new ComplexSymbol(name,id,state);
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118 | }
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119 | }
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