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annotate src/luan/modules/TableLuan.java @ 1334:c88b486a9511

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make some Luan methods static
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 12 Feb 2019 22:53:57 -0700
parents 25746915a241
children e0cf0d108a77
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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4c0131c2b650 merge luan/lib into modules
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diff changeset
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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899253043270 remove PackageLuan.load_lib()
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12 import luan.LuanMethod;
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14
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15 public final class TableLuan {
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16
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17 public static String concat(LuanTable list,String sep,Integer i,Integer j) throws LuanException {
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18 int first = i==null ? 1 : i;
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19 int last = j==null ? list.length() : j;
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20 StringBuilder buf = new StringBuilder();
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21 for( int k=first; k<=last; k++ ) {
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22 Object val = list.get(k);
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23 if( val==null )
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24 break;
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25 if( sep!=null && k > first )
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26 buf.append(sep);
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27 String s = Luan.luanToString(val);
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28 buf.append(s);
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29 }
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30 return buf.toString();
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31 }
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32
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33 public static void insert(LuanTable list,int pos,Object value) throws LuanException {
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34 Utils.checkNotNull(list);
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35 if( list.getMetatable() != null )
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36 throw new LuanException("can't insert into a table with a metatable");
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37 list.rawInsert(pos,value);
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38 }
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39
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40 public static Object remove(LuanTable list,int pos) throws LuanException {
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41 if( list.getMetatable() != null )
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42 throw new LuanException("can't remove from a table with a metatable");
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43 return list.rawRemove(pos);
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44 }
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46 private static interface LessThan {
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47 public boolean isLessThan(Object o1,Object o2);
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48 }
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49
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50 public static void sort(final Luan luan,LuanTable list,final LuanFunction comp) throws LuanException {
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51 if( list.getMetatable() != null )
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52 throw new LuanException("can't sort a table with a metatable");
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53 final LessThan lt;
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54 if( comp==null ) {
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55 lt = new LessThan() {
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56 public boolean isLessThan(Object o1,Object o2) {
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57 try {
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58 return luan.isLessThan(o1,o2);
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59 } catch(LuanException e) {
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60 throw new LuanRuntimeException(e);
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61 }
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62 }
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63 };
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64 } else {
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65 lt = new LessThan() {
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66 public boolean isLessThan(Object o1,Object o2) {
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67 try {
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68 return Luan.checkBoolean(Luan.first(comp.call(luan,new Object[]{o1,o2})));
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69 } catch(LuanException e) {
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70 throw new LuanRuntimeException(e);
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71 }
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72 }
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73 };
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74 }
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75 try {
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76 list.rawSort( new Comparator<Object>() {
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77 public int compare(Object o1,Object o2) {
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78 return lt.isLessThan(o1,o2) ? -1 : lt.isLessThan(o2,o1) ? 1 : 0;
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79 }
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80 } );
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81 } catch(LuanRuntimeException e) {
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82 throw (LuanException)e.getCause();
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83 }
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84 }
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85
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86 public static LuanTable pack(Luan luan,Object... args) throws LuanException {
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87 LuanTable tbl = new LuanTable(luan,Arrays.asList(args));
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88 tbl.rawPut( "n", args.length );
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89 return tbl;
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90 }
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91
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92 @LuanMethod public static Object[] unpack(LuanTable tbl,Integer iFrom,Integer iTo) throws LuanException {
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93 int from = iFrom!=null ? iFrom : 1;
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94 int to;
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95 if( iTo != null ) {
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96 to = iTo;
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97 } else {
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98 Integer n = Luan.asInteger( tbl.get("n") );
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99 to = n!=null ? n : tbl.length();
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100 }
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101 List<Object> list = new ArrayList<Object>();
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102 for( int i=from; i<=to; i++ ) {
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103 list.add( tbl.get(i) );
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104 }
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105 return list.toArray();
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106 }
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107
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108 public static LuanTable copy(Luan luan,LuanTable list,Integer from,Integer to) {
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109 if( from == null )
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110 return new LuanTable(list);
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111 if( to == null )
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112 to = list.rawLength();
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113 return list.rawSubList(from,to);
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114 }
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115
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116 public static void clear(LuanTable tbl) {
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117 tbl.rawClear();
1e69d9c21461 add Table.clear();
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118 }
1e69d9c21461 add Table.clear();
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119
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120 public static int hash_value(LuanTable tbl) throws LuanException {
2443152dc2f1 add Luan.hash_code() and Table.hash_value()
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121 return tbl.hashValue();
2443152dc2f1 add Luan.hash_code() and Table.hash_value()
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122 }
2443152dc2f1 add Luan.hash_code() and Table.hash_value()
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123
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ad6b3b9fef40 add Table.is_empty() and Table.size()
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124 public static boolean is_empty(LuanTable tbl) throws LuanException {
ad6b3b9fef40 add Table.is_empty() and Table.size()
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125 return tbl.rawIsEmpty();
ad6b3b9fef40 add Table.is_empty() and Table.size()
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126 }
ad6b3b9fef40 add Table.is_empty() and Table.size()
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127
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128 public static int size(LuanTable tbl) throws LuanException {
ad6b3b9fef40 add Table.is_empty() and Table.size()
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129 return tbl.rawSize();
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130 }
ad6b3b9fef40 add Table.is_empty() and Table.size()
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131
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25746915a241 merge Luan and LuanState
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132 public static LuanTable toTable(Luan luan,Object obj) {
1267
9fa8b8389578 add LuanTable.luan;
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133 return luan.toTable(obj);
9fa8b8389578 add LuanTable.luan;
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134 }
9fa8b8389578 add LuanTable.luan;
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135
44
57054fa43189 implement table lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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136 }