Mercurial Hosting > luan
annotate src/luan/lib/BasicLib.java @ 118:735708619119
add Debug.debug()
git-svn-id: https://luan-java.googlecode.com/svn/trunk@119 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Sun, 01 Jun 2014 07:07:31 +0000 |
parents | 1ff1c32417eb |
children | d7be9b3abf1a |
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1 package luan.lib; |
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2 |
29
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3 import java.io.File; |
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4 import java.io.InputStreamReader; |
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5 import java.io.IOException; |
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6 import java.lang.reflect.Method; |
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7 import java.util.Iterator; |
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8 import java.util.Map; |
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9 import java.util.List; |
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10 import java.util.ArrayList; |
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11 import luan.Luan; |
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12 import luan.LuanState; |
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13 import luan.LuanTable; |
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14 import luan.LuanFunction; |
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15 import luan.LuanJavaFunction; |
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16 import luan.LuanException; |
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17 import luan.LuanSource; |
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18 import luan.LuanElement; |
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19 import luan.interp.LuanCompiler; |
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20 |
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21 |
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22 public final class BasicLib { |
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23 |
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24 public static final String NAME = "Basic"; |
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25 |
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26 public static final LuanFunction LOADER = new LuanFunction() { |
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27 @Override public Object call(LuanState luan,Object[] args) { |
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28 LuanTable module = new LuanTable(); |
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29 LuanTable global = luan.global(); |
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30 try { |
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31 global.put( "assert", new LuanJavaFunction(BasicLib.class.getMethod("assert_",LuanState.class,Object.class,String.class),null) ); |
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32 add( global, "assert_boolean", LuanState.class, Boolean.TYPE ); |
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33 add( global, "assert_nil", LuanState.class, Object.class ); |
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34 add( global, "assert_number", LuanState.class, Number.class ); |
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35 add( global, "assert_string", LuanState.class, String.class ); |
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36 add( global, "assert_table", LuanState.class, LuanTable.class ); |
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37 add( global, "do_file", LuanState.class, String.class ); |
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38 add( global, "error", LuanState.class, Object.class ); |
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39 add( global, "get_metatable", LuanState.class, Object.class ); |
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40 add( global, "ipairs", LuanState.class, LuanTable.class ); |
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41 add( global, "load", LuanState.class, String.class, String.class, Boolean.class ); |
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42 add( global, "load_file", LuanState.class, String.class ); |
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43 add( global, "pairs", LuanState.class, LuanTable.class ); |
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44 // add( global, "print", LuanState.class, new Object[0].getClass() ); |
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45 add( global, "range", LuanState.class, Double.TYPE, Double.TYPE, Double.class ); |
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46 add( global, "raw_equal", Object.class, Object.class ); |
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47 add( global, "raw_get", LuanTable.class, Object.class ); |
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48 add( global, "raw_len", LuanState.class, Object.class ); |
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49 add( global, "raw_set", LuanTable.class, Object.class, Object.class ); |
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50 add( global, "repr", LuanState.class, Object.class ); |
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51 add( global, "set_metatable", LuanTable.class, LuanTable.class ); |
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52 add( global, "to_number", Object.class, Integer.class ); |
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53 add( global, "to_string", LuanState.class, Object.class ); |
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54 add( global, "type", Object.class ); |
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55 global.put( "_VERSION", Luan.version ); |
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56 add( module, "values", new Object[0].getClass() ); |
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57 } catch(NoSuchMethodException e) { |
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58 throw new RuntimeException(e); |
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59 } |
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60 return module; |
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61 } |
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62 }; |
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63 |
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64 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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65 t.put( method, new LuanJavaFunction(BasicLib.class.getMethod(method,parameterTypes),null) ); |
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66 } |
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67 /* |
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68 public static void print(LuanState luan,Object... args) throws LuanException { |
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69 LuanFunction write = (LuanFunction)luan.get("Io.stdout.write"); |
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70 List<Object> list = new ArrayList<Object>(); |
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71 for( int i=0; i<args.length; i++ ) { |
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72 if( i > 0 ) |
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73 list.add("\t"); |
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74 list.add(args[i]); |
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75 } |
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76 list.add("\n"); |
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77 write.call(luan,list.toArray()); |
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78 } |
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79 */ |
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80 public static String type(Object obj) { |
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81 return Luan.type(obj); |
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82 } |
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83 |
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84 public static LuanFunction load(LuanState luan,String text,String sourceName,Boolean interactive) throws LuanException { |
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85 if( interactive!=null && interactive ) |
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86 return LuanCompiler.compileInteractive(luan,new LuanSource(sourceName,text)); |
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87 else |
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88 return LuanCompiler.compileModule(luan,new LuanSource(sourceName,text)); |
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89 } |
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90 |
116
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91 public static LuanFunction load_file(LuanState luan,String fileName) throws LuanException { |
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92 try { |
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93 String src = fileName==null ? Utils.readAll(new InputStreamReader(System.in)) : Utils.read(new File(fileName)); |
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94 return load(luan,src,fileName,false); |
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95 } catch(IOException e) { |
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96 throw luan.JAVA.exception(e); |
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97 } |
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98 } |
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99 |
116
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100 public static LuanFunction load_java_resource(LuanState luan,String path) throws LuanException { |
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101 try { |
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102 String src = new IoLib.LuanUrl(IoLib.java_resource_to_url(path)).read_text(); |
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103 return load(luan,src,path,false); |
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104 } catch(IOException e) { |
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105 throw luan.JAVA.exception(e); |
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106 } |
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107 } |
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108 |
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109 public static Object do_file(LuanState luan,String fileName) throws LuanException { |
108
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110 LuanFunction fn = load_file(luan,fileName); |
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111 return luan.JAVA.call(fn,null); |
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112 } |
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113 |
116
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114 public static Object do_java_resource(LuanState luan,String path) throws LuanException { |
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115 LuanFunction fn = load_java_resource(luan,path); |
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116 return luan.JAVA.call(fn,null); |
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117 } |
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118 |
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119 private static LuanFunction pairs(final Iterator<Map.Entry<Object,Object>> iter) { |
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120 return new LuanFunction() { |
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121 @Override public Object[] call(LuanState luan,Object[] args) { |
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122 if( !iter.hasNext() ) |
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123 return LuanFunction.EMPTY; |
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124 Map.Entry<Object,Object> entry = iter.next(); |
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125 return new Object[]{entry.getKey(),entry.getValue()}; |
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126 } |
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127 }; |
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128 } |
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129 |
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130 public static LuanFunction pairs(LuanState luan,LuanTable t) throws LuanException { |
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131 Utils.checkNotNull(luan,t,"table"); |
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132 return pairs( t.iterator() ); |
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133 } |
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134 |
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135 public static LuanFunction ipairs(LuanState luan,LuanTable t) throws LuanException { |
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136 Utils.checkNotNull(luan,t,"table"); |
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137 return pairs( t.listIterator() ); |
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138 } |
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139 |
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140 public static LuanTable get_metatable(LuanState luan,Object obj) { |
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141 return luan.getMetatable(obj); |
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142 } |
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143 |
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144 public static LuanTable set_metatable(LuanTable table,LuanTable metatable) { |
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145 table.setMetatable(metatable); |
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146 return table; |
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147 } |
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148 |
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149 public static boolean raw_equal(Object v1,Object v2) { |
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150 return v1 == v2 || v1 != null && v1.equals(v2); |
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151 } |
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152 |
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153 public static Object raw_get(LuanTable table,Object index) { |
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154 return table.get(index); |
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155 } |
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156 |
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157 public static LuanTable raw_set(LuanTable table,Object index,Object value) { |
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158 table.put(index,value); |
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159 return table; |
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160 } |
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161 |
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162 public static int raw_len(LuanState luan,Object v) throws LuanException { |
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163 if( v instanceof String ) { |
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164 String s = (String)v; |
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165 return s.length(); |
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166 } |
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167 if( v instanceof LuanTable ) { |
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168 LuanTable t = (LuanTable)v; |
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169 return t.length(); |
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170 } |
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171 throw luan.JAVA.exception( "bad argument #1 to 'raw_len' (table or string expected)" ); |
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172 } |
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173 |
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174 public static Number to_number(Object e,Integer base) { |
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175 return Luan.toNumber(e,base); |
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176 } |
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177 |
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178 public static String to_string(LuanState luan,Object v) throws LuanException { |
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179 return luan.JAVA.toString(v); |
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180 } |
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181 |
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182 public static void error(LuanState luan,Object msg) throws LuanException { |
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183 throw luan.JAVA.exception(msg); |
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184 } |
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185 |
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186 public static Object assert_(LuanState luan,Object v,String msg) throws LuanException { |
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187 if( Luan.toBoolean(v) ) |
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188 return v; |
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189 if( msg == null ) |
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190 msg = "assertion failed!"; |
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191 throw luan.JAVA.exception( msg ); |
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192 } |
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193 |
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194 public static String assert_string(LuanState luan,String v) throws LuanException { |
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195 Utils.checkNotNull(luan,v,"string"); |
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196 return v; |
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197 } |
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198 |
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199 public static Number assert_number(LuanState luan,Number v) throws LuanException { |
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200 Utils.checkNotNull(luan,v,"number"); |
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201 return v; |
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202 } |
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203 |
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204 public static LuanTable assert_table(LuanState luan,LuanTable v) throws LuanException { |
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205 Utils.checkNotNull(luan,v,"table"); |
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206 return v; |
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207 } |
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208 |
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209 public static boolean assert_boolean(LuanState luan,boolean v) throws LuanException { |
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210 return v; |
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211 } |
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212 |
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213 public static Object assert_nil(LuanState luan,Object v) throws LuanException { |
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214 if( v != null ) |
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215 throw luan.JAVA.exception("bad argument #1 (nil expected, got "+Luan.type(v)+")"); |
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216 return v; |
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217 } |
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218 |
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219 public static String repr(LuanState luan,Object v) throws LuanException { |
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220 return luan.JAVA.repr(v); |
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221 } |
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222 |
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223 public static LuanFunction range(LuanState luan,final double from,final double to,Double stepV) throws LuanException { |
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224 final double step = stepV==null ? 1.0 : stepV; |
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225 if( step == 0.0 ) |
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226 throw luan.JAVA.exception("bad argument #3 (step may not be zero)"); |
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227 return new LuanFunction() { |
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228 double v = from; |
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229 |
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230 @Override public Object call(LuanState luan,Object[] args) { |
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231 if( step > 0.0 && v > to || step < 0.0 && v < to ) |
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232 return LuanFunction.EMPTY; |
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233 double rtn = v; |
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234 v += step; |
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235 return rtn; |
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236 } |
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237 }; |
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238 } |
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239 |
116
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240 public static LuanFunction values(final Object... args) throws LuanException { |
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241 return new LuanFunction() { |
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242 int i = 0; |
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243 |
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244 @Override public Object call(LuanState luan,Object[] unused) { |
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245 return i < args.length ? args[i++] : null; |
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246 } |
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247 }; |
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248 } |
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249 |
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250 } |