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annotate src/luan/modules/TableLuan.java @ 1562:b89212fd04b5

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remove table.luan
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 08 Nov 2020 16:50:59 -0700
parents 225808b90cee
children 8fbcc4747091
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
167
4c0131c2b650 merge luan/lib into modules
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1 package luan.modules;
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2
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3 import java.util.Comparator;
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4 import java.util.List;
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5 import java.util.ArrayList;
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6 import java.util.Arrays;
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7 import luan.Luan;
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8 import luan.LuanTable;
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9 import luan.LuanFunction;
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10 import luan.LuanException;
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11 import luan.LuanRuntimeException;
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13
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14 public final class TableLuan {
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15
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16 public static String concat(Luan luan,LuanTable list,String sep,Integer i,Integer j) throws LuanException {
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17 int first = i==null ? 1 : i;
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9fa8b8389578 add LuanTable.luan;
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18 int last = j==null ? list.length() : j;
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19 StringBuilder buf = new StringBuilder();
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20 for( int k=first; k<=last; k++ ) {
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21 Object val = list.get(luan,k);
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22 if( val==null )
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23 break;
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24 if( sep!=null && k > first )
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25 buf.append(sep);
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26 String s = Luan.luanToString(val);
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27 buf.append(s);
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28 }
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29 return buf.toString();
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30 }
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31
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32 public static void insert(LuanTable list,int pos,Object value) throws LuanException {
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33 Utils.checkNotNull(list);
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34 if( list.getMetatable() != null )
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35 throw new LuanException("can't insert into a table with a metatable");
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36 list.rawInsert(pos,value);
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37 }
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38
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39 public static Object remove(LuanTable list,int pos) throws LuanException {
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40 if( list.getMetatable() != null )
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41 throw new LuanException("can't remove from a table with a metatable");
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42 return list.removeFromList(pos);
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43 }
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45 private static interface LessThan {
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46 public boolean isLessThan(Object o1,Object o2);
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47 }
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48
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49 public static void sort(LuanTable list,final LuanFunction comp) throws LuanException {
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50 if( list.getMetatable() != null )
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51 throw new LuanException("can't sort a table with a metatable");
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52 final LessThan lt;
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53 if( comp==null ) {
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54 lt = new LessThan() {
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55 public boolean isLessThan(Object o1,Object o2) {
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56 try {
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57 return Luan.isLessThan(o1,o2);
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58 } catch(LuanException e) {
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59 throw new LuanRuntimeException(e);
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60 }
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61 }
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62 };
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63 } else {
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64 lt = new LessThan() {
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65 public boolean isLessThan(Object o1,Object o2) {
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66 try {
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67 return Luan.checkBoolean(Luan.first(comp.call(o1,o2)));
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68 } catch(LuanException e) {
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69 throw new LuanRuntimeException(e);
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70 }
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71 }
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72 };
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73 }
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74 try {
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75 list.rawSort( new Comparator<Object>() {
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76 public int compare(Object o1,Object o2) {
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77 return lt.isLessThan(o1,o2) ? -1 : lt.isLessThan(o2,o1) ? 1 : 0;
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78 }
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79 } );
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80 } catch(LuanRuntimeException e) {
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81 throw (LuanException)e.getCause();
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82 }
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83 }
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84
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85 public static LuanTable pack(Object... args) throws LuanException {
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86 LuanTable tbl = new LuanTable(Arrays.asList(args));
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87 tbl.rawPut( "n", args.length );
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88 return tbl;
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89 }
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90
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91 public static Object[] unpack(Luan luan,LuanTable tbl,Integer iFrom,Integer iTo) throws LuanException {
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92 int from = iFrom!=null ? iFrom : 1;
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93 int to;
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94 if( iTo != null ) {
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95 to = iTo;
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96 } else {
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97 Integer n = Luan.asInteger( tbl.get(luan,"n") );
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98 to = n!=null ? n : tbl.length();
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99 }
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100 List<Object> list = new ArrayList<Object>();
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101 for( int i=from; i<=to; i++ ) {
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102 list.add( tbl.get(luan,i) );
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103 }
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104 return list.toArray();
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105 }
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106
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107 public static LuanTable copy(LuanTable list,Integer from,Integer to) {
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108 if( from == null )
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109 return new LuanTable(list);
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110 if( to == null )
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111 to = list.rawLength();
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112 return list.rawSubList(from,to);
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113 }
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114
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115 public static void clear(LuanTable tbl) {
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116 tbl.rawClear();
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117 }
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118
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119 public static int hash_value(LuanTable tbl) throws LuanException {
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120 return tbl.hashValue();
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121 }
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122
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123 public static boolean is_empty(LuanTable tbl) throws LuanException {
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225808b90cee options handling
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124 return tbl.isEmpty();
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125 }
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126
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127 public static int size(LuanTable tbl) throws LuanException {
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128 return tbl.rawSize();
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129 }
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130
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25746915a241 merge Luan and LuanState
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131 public static LuanTable toTable(Luan luan,Object obj) {
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132 return luan.toTable(obj);
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133 }
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134
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57054fa43189 implement table lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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135 }