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annotate src/luan/modules/BasicLuan.java @ 1563:8fbcc4747091

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remove LuanFunction.luan
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 09 Nov 2020 01:37:57 -0700
parents b89212fd04b5
children c922446f53aa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
167
4c0131c2b650 merge luan/lib into modules
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diff changeset
1 package luan.modules;
2
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3 import java.io.InputStreamReader;
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4 import java.io.IOException;
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5 import java.lang.reflect.Method;
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6 import java.util.Iterator;
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7 import java.util.Map;
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8 import java.util.List;
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9 import java.util.ArrayList;
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10 import java.util.Arrays;
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11 import java.util.HashSet;
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12 import goodjava.json.JsonToString;
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13 import luan.Luan;
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14 import luan.LuanTable;
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15 import luan.LuanFunction;
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16 import luan.LuanException;
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17 import luan.LuanCloner;
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18 import luan.LuanCloneable;
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19 import luan.LuanImmutabler;
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20 import luan.modules.parsers.LuanToString;
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22
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23 public final class BasicLuan {
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25 public static String type(Object obj) {
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26 return Luan.type(obj);
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27 }
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28
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29 public static LuanFunction load(Luan luan,String text,String sourceName,boolean persist,LuanTable env)
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30 throws LuanException
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31 {
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32 Utils.checkNotNull(text);
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33 Utils.checkNotNull(sourceName,1);
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34 return luan.load(text,sourceName,persist,env);
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35 }
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36 /*
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37 public static LuanFunction load_file(Luan luan,String fileName) throws LuanException {
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38 if( fileName == null ) {
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39 fileName = "stdin:";
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40 } else if( fileName.indexOf(':') == -1 ) {
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41 fileName = "file:" + fileName;
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42 }
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43 String src = PackageLuan.read(luan,fileName);
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44 if( src == null )
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45 return null;
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46 return load(luan,src,fileName,null);
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47 }
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48 */
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49 public static LuanFunction pairs(Luan luan,final LuanTable t) throws LuanException {
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50 Utils.checkNotNull(t);
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51 return t.pairs(luan);
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52 }
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53
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54 private static class Ipairs extends LuanFunction implements LuanCloneable, Cloneable {
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55 List<Object> list;
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56 int i = 0;
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57 final int size;
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58
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59 Ipairs(LuanTable t) {
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60 list = t.asList();
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61 size = list.size();
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62 }
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63
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64 @Override public Object[] call(Luan luan,Object[] args) {
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65 if( i >= size )
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66 return LuanFunction.NOTHING;
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67 Object val = list.get(i++);
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68 return new Object[]{i,val};
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69 }
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70
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71 @Override public final Ipairs shallowClone() {
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72 try {
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73 return (Ipairs)clone();
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74 } catch(CloneNotSupportedException e) {
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75 throw new RuntimeException(e);
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76 }
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77 }
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78
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79 @Override public final void deepenClone(LuanCloneable dc,LuanCloner cloner) {
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80 Ipairs clone = (Ipairs)dc;
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81 clone.list = (List)cloner.clone(list);
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82 }
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83
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84 @Override public void makeImmutable(LuanImmutabler immutabler) throws LuanException {
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85 throw new LuanException("ipairs cannot be made immutable");
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86 }
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87 }
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88
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89 public static LuanFunction ipairs(LuanTable t) throws LuanException {
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90 Utils.checkNotNull(t);
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91 return new Ipairs(t);
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92 }
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93
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94 public static Object get_metatable(LuanTable table) throws LuanException {
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95 Utils.checkNotNull(table);
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96 LuanTable metatable = table.getMetatable();
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97 if( metatable == null )
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98 return null;
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99 Object obj = metatable.rawGet("__metatable");
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100 return obj!=null ? obj : metatable;
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101 }
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102
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103 public static void set_metatable(LuanTable table,LuanTable metatable) throws LuanException {
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104 Utils.checkNotNull(table);
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105 if( table.getHandler("__metatable") != null )
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106 throw new LuanException("cannot change a protected metatable");
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107 table.setMetatable(metatable);
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108 }
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109
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110 public static boolean raw_equal(Object v1,Object v2) {
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111 return v1 == v2 || v1 != null && v1.equals(v2);
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112 }
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113
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114 public static Object raw_get(LuanTable table,Object index) {
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115 return table.rawGet(index);
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116 }
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117
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118 public static void raw_set(LuanTable table,Object index,Object value) throws LuanException {
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119 table.rawPut(index,value);
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120 }
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121
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122 public static int raw_len(Object v) throws LuanException {
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123 if( v instanceof String ) {
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124 String s = (String)v;
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125 return s.length();
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126 }
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127 if( v instanceof LuanTable ) {
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128 LuanTable t = (LuanTable)v;
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129 return t.rawLength();
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130 }
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131 throw new LuanException( "bad argument #1 to 'raw_len' (table or string expected)" );
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132 }
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133
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134 public static String to_string(Luan luan,Object v) throws LuanException {
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135 return luan.luanToString(v);
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136 }
41
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137
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138 public static LuanTable new_error(Luan luan,Object msg) throws LuanException {
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139 String s = luan.luanToString(msg);
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140 LuanTable tbl = new LuanException(s).table(luan);
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141 tbl.rawPut( "message", msg );
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142 return tbl;
41
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143 }
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144
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145 public static int assert_integer(int v) {
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146 return v;
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147 }
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148
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149 public static long assert_long(long v) {
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150 return v;
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151 }
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152
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153 public static double assert_double(double v) {
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154 return v;
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155 }
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156
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157 public static float assert_float(float v) {
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158 return v;
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159 }
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160
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161 public static LuanFunction range(final double from,final double to,Double stepV) throws LuanException {
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162 final double step = stepV==null ? 1.0 : stepV;
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163 if( step == 0.0 )
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164 throw new LuanException("bad argument #3 (step may not be zero)");
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165 return new LuanFunction() {
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166 double v = from;
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167
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168 @Override public Object call(Luan luan,Object[] args) {
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169 if( step > 0.0 && v > to || step < 0.0 && v < to )
123
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170 return LuanFunction.NOTHING;
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171 double rtn = v;
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172 v += step;
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173 return rtn;
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174 }
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175 };
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176 }
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177
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178 private static class Values extends LuanFunction implements LuanCloneable, Cloneable {
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179 Object[] args;
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180 int i = 0;
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181
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182 Values(Object[] args) {
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183 this.args = args;
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184 }
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185
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186 @Override public Object[] call(Luan luan,Object[] x) {
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187 if( i >= args.length )
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188 return LuanFunction.NOTHING;
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189 Object val = args[i++];
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190 return new Object[]{i,val};
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191 }
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192
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193 @Override public final Values shallowClone() {
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194 try {
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195 return (Values)clone();
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196 } catch(CloneNotSupportedException e) {
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197 throw new RuntimeException(e);
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198 }
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199 }
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200
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201 @Override public final void deepenClone(LuanCloneable dc,LuanCloner cloner) {
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202 Values clone = (Values)dc;
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203 clone.args = (Object[])cloner.clone(args);
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204 }
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205
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206 @Override public void makeImmutable(LuanImmutabler immutabler) throws LuanException {
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207 throw new LuanException("values cannot be made immutable");
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208 }
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209 }
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210
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211 public static LuanFunction values(final Object... args) throws LuanException {
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212 return new Values(args);
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213 }
143
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214
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215 private LuanFunction fn(Object obj) {
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216 return obj instanceof LuanFunction ? (LuanFunction)obj : null;
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217 }
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218
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219 public static String number_type(Number v) throws LuanException {
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220 Utils.checkNotNull(v);
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221 return v.getClass().getSimpleName().toLowerCase();
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222 }
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223
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224 public static int hash_code(Object obj) throws LuanException {
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225 if( obj == null ) {
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226 return 0;
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227 } else if( obj instanceof byte[] ) {
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228 return Arrays.hashCode((byte[])obj);
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229 } else {
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230 return obj.hashCode();
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231 }
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232 }
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diff changeset
233
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234 public static String stringify(Object obj,LuanTable options,LuanTable subOptions) throws LuanException {
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235 LuanToString lts = new LuanToString(options,subOptions);
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236 return lts.toString(obj);
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237 }
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238
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239 public static String json_string(Object obj,LuanTable options) throws LuanException {
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240 JsonToString jts = new JsonToString();
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241 if( options != null ) {
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242 options = new LuanTable(options);
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diff changeset
243 Boolean compressed = Utils.removeBoolean(options,"compressed");
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244 if( compressed != null )
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245 jts.compressed = compressed;
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246 Utils.checkEmpty(options);
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247 }
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248 return jts.toString(Luan.toJava(obj));
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249 }
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diff changeset
250
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diff changeset
251 private void BasicLuan() {} // never
2
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252 }