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annotate src/luan/modules/BasicLuan.java @ 1552:46d4baaad64d

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add long_string_keys
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 04 Oct 2020 20:26:49 -0600
parents 0dc3be25ad20
children 26c51acf00f3
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;
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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.modules.parsers.LuanToString;
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21 public final class BasicLuan {
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23 public static String type(Object obj) {
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24 return Luan.type(obj);
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25 }
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26
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27 public static LuanFunction load(Luan luan,String text,String sourceName,boolean persist,LuanTable env)
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28 throws LuanException
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29 {
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30 Utils.checkNotNull(text);
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31 Utils.checkNotNull(sourceName,1);
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32 return luan.load(text,sourceName,persist,env);
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33 }
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34 /*
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35 public static LuanFunction load_file(Luan luan,String fileName) throws LuanException {
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36 if( fileName == null ) {
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37 fileName = "stdin:";
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38 } else if( fileName.indexOf(':') == -1 ) {
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39 fileName = "file:" + fileName;
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40 }
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41 String src = PackageLuan.read(luan,fileName);
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42 if( src == null )
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43 return null;
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44 return load(luan,src,fileName,null);
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45 }
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46 */
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47 public static LuanFunction pairs(final LuanTable t) throws LuanException {
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48 Utils.checkNotNull(t);
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49 return t.pairs();
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50 }
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51
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52 private static class Ipairs extends LuanFunction {
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53 List<Object> list;
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54 int i = 0;
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55 final int size;
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56
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57 Ipairs(LuanTable t) {
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58 super(true);
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59 list = t.asList();
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60 size = list.size();
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61 }
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62
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63 @Override public Object[] call(Object[] args) {
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64 if( i >= size )
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65 return LuanFunction.NOTHING;
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66 Object val = list.get(i++);
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67 return new Object[]{i,val};
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68 }
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69
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70 @Override protected void completeClone(LuanFunction dc,LuanCloner cloner) {
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71 Ipairs clone = (Ipairs)dc;
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72 clone.list = (List)cloner.clone(list);
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73 super.completeClone(dc,cloner);
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74 }
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75 }
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76
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77 public static LuanFunction ipairs(LuanTable t) throws LuanException {
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78 Utils.checkNotNull(t);
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79 return new Ipairs(t);
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80 }
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81
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82 public static Object get_metatable(LuanTable table) throws LuanException {
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83 Utils.checkNotNull(table);
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84 LuanTable metatable = table.getMetatable();
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85 if( metatable == null )
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86 return null;
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87 Object obj = metatable.rawGet("__metatable");
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88 return obj!=null ? obj : metatable;
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89 }
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90
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91 public static void set_metatable(LuanTable table,LuanTable metatable) throws LuanException {
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92 Utils.checkNotNull(table);
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93 if( table.getHandler("__metatable") != null )
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94 throw new LuanException("cannot change a protected metatable");
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95 table.setMetatable(metatable);
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96 }
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97
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98 public static boolean raw_equal(Object v1,Object v2) {
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99 return v1 == v2 || v1 != null && v1.equals(v2);
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100 }
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101
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102 public static Object raw_get(LuanTable table,Object index) {
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103 return table.rawGet(index);
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104 }
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105
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106 public static void raw_set(LuanTable table,Object index,Object value) throws LuanException {
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107 table.rawPut(index,value);
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108 }
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109
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110 public static int raw_len(Object v) throws LuanException {
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111 if( v instanceof String ) {
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112 String s = (String)v;
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113 return s.length();
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114 }
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115 if( v instanceof LuanTable ) {
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116 LuanTable t = (LuanTable)v;
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117 return t.rawLength();
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118 }
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119 throw new LuanException( "bad argument #1 to 'raw_len' (table or string expected)" );
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120 }
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121
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122 public static String to_string(Object v) throws LuanException {
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123 return Luan.luanToString(v);
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124 }
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125
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126 public static LuanTable new_error(Luan luan,Object msg) throws LuanException {
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127 String s = Luan.luanToString(msg);
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128 LuanTable tbl = new LuanException(s).table(luan);
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129 tbl.rawPut( "message", msg );
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130 return tbl;
41
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131 }
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132
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133 public static int assert_integer(int v) {
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134 return v;
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135 }
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136
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137 public static long assert_long(long v) {
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138 return v;
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139 }
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140
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141 public static double assert_double(double v) {
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142 return v;
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143 }
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144
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145 public static float assert_float(float 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 LuanFunction range(final double from,final double to,Double stepV) throws LuanException {
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150 final double step = stepV==null ? 1.0 : stepV;
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151 if( step == 0.0 )
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152 throw new LuanException("bad argument #3 (step may not be zero)");
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153 return new LuanFunction(false) {
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154 double v = from;
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155
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156 @Override public Object call(Object[] args) {
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157 if( step > 0.0 && v > to || step < 0.0 && v < to )
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158 return LuanFunction.NOTHING;
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159 double rtn = v;
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160 v += step;
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161 return rtn;
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162 }
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163 };
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164 }
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165
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166 private static class Values extends LuanFunction {
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167 Object[] args;
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168 int i = 0;
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169
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170 Values(Object[] args) {
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171 super(true);
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172 this.args = args;
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173 }
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174
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175 @Override public Object[] call(Object[] x) {
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176 if( i >= args.length )
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177 return LuanFunction.NOTHING;
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178 Object val = args[i++];
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179 return new Object[]{i,val};
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180 }
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181
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182 @Override protected void completeClone(LuanFunction dc,LuanCloner cloner) {
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183 Values clone = (Values)dc;
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184 clone.args = (Object[])cloner.clone(args);
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185 super.completeClone(dc,cloner);
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186 }
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187 }
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188
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189 public static LuanFunction values(final Object... args) throws LuanException {
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190 return new Values(args);
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191 }
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192
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193 private LuanFunction fn(Object obj) {
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194 return obj instanceof LuanFunction ? (LuanFunction)obj : null;
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195 }
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196
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197 public static String number_type(Number v) throws LuanException {
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198 Utils.checkNotNull(v);
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199 return v.getClass().getSimpleName().toLowerCase();
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200 }
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201
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202 public static int hash_code(Object obj) throws LuanException {
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203 if( obj == null ) {
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204 return 0;
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205 } else if( obj instanceof byte[] ) {
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206 return Arrays.hashCode((byte[])obj);
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207 } else {
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208 return obj.hashCode();
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209 }
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210 }
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211
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212 public static String stringify(Object obj,LuanTable options) throws LuanException {
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213 LuanToString lts = new LuanToString();
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214 if( options != null ) {
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215 options = new LuanTable(options);
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216 Boolean strict = Utils.removeBoolean(options,"strict");
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217 if( strict != null )
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218 lts.strict = strict;
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219 Boolean numberTypes = Utils.removeBoolean(options,"number_types");
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220 if( numberTypes != null )
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221 lts.numberTypes = numberTypes;
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222 Boolean compressed = Utils.removeBoolean(options,"compressed");
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223 if( compressed != null )
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224 lts.compressed = compressed;
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225 Boolean useLongStrings = Utils.removeBoolean(options,"use_long_strings");
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226 if( useLongStrings != null )
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227 lts.useLongStrings = useLongStrings;
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228 LuanTable longStringKeys = Utils.removeTable(options,"long_string_keys");
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229 if( longStringKeys != null )
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230 lts.longStringKeys = new HashSet(longStringKeys.asList());
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231 Utils.checkEmpty(options);
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232 }
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233 return lts.toString(obj);
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234 }
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235
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236 public static String json_string(Object obj,LuanTable options) throws LuanException {
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237 JsonToString jts = new JsonToString();
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238 if( options != null ) {
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239 options = new LuanTable(options);
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240 Boolean compressed = Utils.removeBoolean(options,"compressed");
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241 if( compressed != null )
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242 jts.compressed = compressed;
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243 Utils.checkEmpty(options);
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244 }
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245 return jts.toString(Luan.toJava(obj));
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246 }
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247
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248 private void BasicLuan() {} // never
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249 }