Mercurial Hosting > luan
annotate core/src/luan/modules/BasicLuan.java @ 233:ef39bc4d3f70
basic lucene works
git-svn-id: https://luan-java.googlecode.com/svn/trunk@234 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 02 Oct 2014 02:58:55 +0000 |
parents | ec016471c6eb |
children | 1fada5587469 |
rev | line source |
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167
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1 package luan.modules; |
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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 luan.Luan; |
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11 import luan.LuanState; |
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12 import luan.LuanTable; |
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13 import luan.LuanFunction; |
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14 import luan.LuanJavaFunction; |
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15 import luan.LuanException; |
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16 import luan.LuanSource; |
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17 import luan.LuanElement; |
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18 import luan.impl.LuanCompiler; |
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19 |
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20 |
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21 public final class BasicLuan { |
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22 |
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23 public static final LuanFunction LOADER = new LuanFunction() { |
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24 @Override public Object call(LuanState luan,Object[] args) { |
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25 LuanTable module = Luan.newTable(); |
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26 try { |
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27 module.put( "assert", new LuanJavaFunction(BasicLuan.class.getMethod("assert_",LuanState.class,Object.class,String.class),null) ); |
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28 add( module, "assert_boolean", LuanState.class, Boolean.TYPE ); |
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29 add( module, "assert_nil", LuanState.class, Object.class ); |
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30 add( module, "assert_number", LuanState.class, Number.class ); |
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31 add( module, "assert_string", LuanState.class, String.class ); |
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32 add( module, "assert_table", LuanState.class, LuanTable.class ); |
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33 add( module, "assert_integer", LuanState.class, Integer.TYPE ); |
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34 add( module, "do_file", LuanState.class, String.class ); |
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35 add( module, "error", LuanState.class, Object.class ); |
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36 add( module, "get_metatable", LuanState.class, Object.class ); |
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37 add( module, "ipairs", LuanState.class, LuanTable.class ); |
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38 add( module, "load", LuanState.class, String.class, String.class, LuanTable.class, Boolean.class ); |
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39 add( module, "load_file", LuanState.class, String.class ); |
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40 add( module, "pairs", LuanState.class, LuanTable.class ); |
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41 add( module, "range", LuanState.class, Double.TYPE, Double.TYPE, Double.class ); |
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42 add( module, "raw_equal", Object.class, Object.class ); |
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43 add( module, "raw_get", LuanTable.class, Object.class ); |
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44 add( module, "raw_len", LuanState.class, Object.class ); |
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45 add( module, "raw_set", LuanTable.class, Object.class, Object.class ); |
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46 add( module, "repr", LuanState.class, Object.class ); |
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47 add( module, "set_metatable", LuanTable.class, LuanTable.class ); |
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48 add( module, "to_number", Object.class, Integer.class ); |
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49 add( module, "to_string", LuanState.class, Object.class ); |
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50 add( module, "type", Object.class ); |
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51 add( module, "values", new Object[0].getClass() ); |
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52 } catch(NoSuchMethodException e) { |
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53 throw new RuntimeException(e); |
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54 } |
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55 return module; |
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56 } |
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57 }; |
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58 |
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59 private static void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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60 t.put( method, new LuanJavaFunction(BasicLuan.class.getMethod(method,parameterTypes),null) ); |
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61 } |
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62 |
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63 public static String type(Object obj) { |
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64 return Luan.type(obj); |
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65 } |
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66 |
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67 public static LuanFunction load(LuanState luan,String text,String sourceName,LuanTable env,Boolean allowExpr) |
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68 throws LuanException |
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69 { |
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70 if( allowExpr==null ) |
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71 allowExpr = false; |
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72 return LuanCompiler.compile(luan,new LuanSource(sourceName,text),env,allowExpr); |
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73 } |
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74 |
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75 public static LuanFunction load_file(LuanState luan,String fileName) throws LuanException { |
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76 try { |
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77 String src = fileName==null ? Utils.readAll(new InputStreamReader(System.in)) : IoLuan.luanIo(luan,fileName).read_text(); |
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78 return load(luan,src,fileName,null,false); |
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79 } catch(IOException e) { |
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80 throw luan.exception(e); |
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81 } |
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82 } |
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83 |
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84 public static Object do_file(LuanState luan,String fileName) throws LuanException { |
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85 LuanFunction fn = load_file(luan,fileName); |
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86 return luan.call(fn); |
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87 } |
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88 |
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89 public static LuanFunction pairs(LuanState luan,final LuanTable t) throws LuanException { |
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90 Utils.checkNotNull(luan,t,"table"); |
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91 return new LuanFunction() { |
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92 Iterator<Map.Entry<Object,Object>> iter = t.iterator(); |
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93 |
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94 @Override public Object[] call(LuanState luan,Object[] args) { |
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95 if( !iter.hasNext() ) |
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96 return LuanFunction.NOTHING; |
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97 Map.Entry<Object,Object> entry = iter.next(); |
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98 return new Object[]{entry.getKey(),entry.getValue()}; |
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99 } |
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100 }; |
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101 } |
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102 |
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103 public static LuanFunction ipairs(LuanState luan,final LuanTable t) throws LuanException { |
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104 Utils.checkNotNull(luan,t,"table"); |
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105 return new LuanFunction() { |
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106 List<Object> list = t.asList(); |
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107 int i = 0; |
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108 final int size = list.size(); |
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109 |
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110 @Override public Object[] call(LuanState luan,Object[] args) { |
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111 if( i >= size ) |
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112 return LuanFunction.NOTHING; |
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113 Object val = list.get(i++); |
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114 return new Object[]{i,val}; |
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115 } |
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116 }; |
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117 } |
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118 |
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119 public static LuanTable get_metatable(LuanState luan,Object obj) { |
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120 return luan.getMetatable(obj); |
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121 } |
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122 |
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123 public static LuanTable set_metatable(LuanTable table,LuanTable metatable) { |
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124 table.setMetatable(metatable); |
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125 return table; |
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126 } |
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127 |
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128 public static boolean raw_equal(Object v1,Object v2) { |
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129 return v1 == v2 || v1 != null && v1.equals(v2); |
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130 } |
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131 |
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132 public static Object raw_get(LuanTable table,Object index) { |
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133 return table.get(index); |
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134 } |
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135 |
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136 public static LuanTable raw_set(LuanTable table,Object index,Object value) { |
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137 table.put(index,value); |
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138 return table; |
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139 } |
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140 |
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141 public static int raw_len(LuanState luan,Object v) throws LuanException { |
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142 if( v instanceof String ) { |
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143 String s = (String)v; |
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144 return s.length(); |
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145 } |
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146 if( v instanceof LuanTable ) { |
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147 LuanTable t = (LuanTable)v; |
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148 return t.length(); |
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149 } |
130
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150 throw luan.exception( "bad argument #1 to 'raw_len' (table or string expected)" ); |
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151 } |
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152 |
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153 public static Number to_number(Object e,Integer base) { |
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154 return Luan.toNumber(e,base); |
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155 } |
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156 |
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157 public static String to_string(LuanState luan,Object v) throws LuanException { |
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158 return luan.toString(v); |
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159 } |
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160 |
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161 public static void error(LuanState luan,Object msg) throws LuanException { |
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162 throw luan.exception(msg); |
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163 } |
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164 |
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165 public static Object assert_(LuanState luan,Object v,String msg) throws LuanException { |
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166 if( Luan.toBoolean(v) ) |
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167 return v; |
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168 if( msg == null ) |
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169 msg = "assertion failed!"; |
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170 throw luan.exception( msg ); |
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171 } |
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172 |
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173 public static String assert_string(LuanState luan,String v) throws LuanException { |
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174 Utils.checkNotNull(luan,v,"string"); |
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175 return v; |
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176 } |
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177 |
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178 public static Number assert_number(LuanState luan,Number v) throws LuanException { |
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179 Utils.checkNotNull(luan,v,"number"); |
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180 return v; |
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181 } |
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182 |
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183 public static LuanTable assert_table(LuanState luan,LuanTable v) throws LuanException { |
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184 Utils.checkNotNull(luan,v,"table"); |
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185 return v; |
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186 } |
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187 |
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188 public static boolean assert_boolean(LuanState luan,boolean v) throws LuanException { |
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189 return v; |
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190 } |
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191 |
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192 public static Object assert_nil(LuanState luan,Object v) throws LuanException { |
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193 if( v != null ) |
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194 throw luan.exception("bad argument #1 (nil expected, got "+Luan.type(v)+")"); |
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195 return v; |
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196 } |
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197 |
233
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198 public static int assert_integer(LuanState luan,int v) throws LuanException { |
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199 return v; |
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200 } |
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201 |
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202 public static String repr(LuanState luan,Object v) throws LuanException { |
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203 return luan.repr(v); |
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204 } |
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205 |
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206 public static LuanFunction range(LuanState luan,final double from,final double to,Double stepV) throws LuanException { |
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207 final double step = stepV==null ? 1.0 : stepV; |
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208 if( step == 0.0 ) |
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209 throw luan.exception("bad argument #3 (step may not be zero)"); |
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210 return new LuanFunction() { |
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211 double v = from; |
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212 |
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213 @Override public Object call(LuanState luan,Object[] args) { |
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214 if( step > 0.0 && v > to || step < 0.0 && v < to ) |
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215 return LuanFunction.NOTHING; |
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216 double rtn = v; |
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217 v += step; |
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218 return rtn; |
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219 } |
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220 }; |
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221 } |
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222 |
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223 public static LuanFunction values(final Object... args) throws LuanException { |
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224 return new LuanFunction() { |
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225 int i = 0; |
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226 |
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227 @Override public Object call(LuanState luan,Object[] unused) { |
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228 if( ++i > args.length ) |
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229 return LuanFunction.NOTHING; |
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230 return new Object[]{i,args[i-1]}; |
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231 } |
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232 }; |
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233 } |
143
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234 |
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235 } |