Mercurial Hosting > luan
annotate core/src/luan/modules/BasicLuan.java @ 687:fc08c3b42010
add theme_to_luan
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Mon, 18 Apr 2016 01:08:35 -0600 |
parents | d95caff8ba8c |
children | ca169567ce07 |
rev | line source |
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167
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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 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.LuanMethod; |
413 | 17 import luan.LuanMeta; |
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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 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(LuanState luan,String text,String sourceName,LuanTable env,Boolean allowExpr) |
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28 throws LuanException |
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29 { |
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30 if( allowExpr==null ) |
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31 allowExpr = false; |
675 | 32 return LuanCompiler.compile(sourceName,text,env,allowExpr); |
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33 } |
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34 |
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35 public static LuanFunction load_file(LuanState luan,String fileName,Boolean addExtension) throws LuanException { |
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36 if( fileName == null ) |
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37 fileName = "stdin:"; |
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38 String src = PackageLuan.read(luan,fileName,addExtension); |
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39 if( src == null ) |
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40 throw new LuanException("file '"+fileName+"' not found" ); |
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41 return load(luan,src,fileName,null,false); |
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42 } |
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43 |
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44 public static LuanFunction pairs(final LuanState luan,final LuanTable t) throws LuanException { |
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45 Utils.checkNotNull(t); |
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46 return t.pairs(luan); |
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47 } |
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48 |
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49 public static LuanFunction ipairs(final LuanTable t) throws LuanException { |
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50 Utils.checkNotNull(t); |
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51 return new LuanFunction() { |
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52 List<Object> list = t.asList(); |
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53 int i = 0; |
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54 final int size = list.size(); |
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55 |
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56 @Override public Object[] call(LuanState luan,Object[] args) { |
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57 if( i >= size ) |
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58 return LuanFunction.NOTHING; |
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59 Object val = list.get(i++); |
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60 return new Object[]{i,val}; |
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61 } |
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62 }; |
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63 } |
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64 |
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65 public static Object get_metatable(LuanTable table) throws LuanException { |
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66 Utils.checkNotNull(table); |
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67 LuanTable metatable = table.getMetatable(); |
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68 if( metatable == null ) |
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69 return null; |
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70 Object obj = metatable.rawGet("__metatable"); |
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71 return obj!=null ? obj : metatable; |
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72 } |
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73 |
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74 public static void set_metatable(LuanTable table,LuanTable metatable) throws LuanException { |
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75 Utils.checkNotNull(table); |
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76 if( table.getHandler("__metatable") != null ) |
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77 throw new LuanException("cannot change a protected metatable"); |
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78 table.setMetatable(metatable); |
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79 } |
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80 |
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81 public static boolean raw_equal(Object v1,Object v2) { |
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82 return v1 == v2 || v1 != null && v1.equals(v2); |
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83 } |
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84 |
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85 public static Object raw_get(LuanTable table,Object index) { |
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86 return table.rawGet(index); |
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87 } |
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88 |
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89 public static void raw_set(LuanTable table,Object index,Object value) { |
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90 table.rawPut(index,value); |
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91 } |
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92 |
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93 public static int raw_len(Object v) throws LuanException { |
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94 if( v instanceof String ) { |
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95 String s = (String)v; |
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96 return s.length(); |
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97 } |
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98 if( v instanceof LuanTable ) { |
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99 LuanTable t = (LuanTable)v; |
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100 return t.rawLength(); |
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101 } |
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102 throw new LuanException( "bad argument #1 to 'raw_len' (table or string expected)" ); |
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103 } |
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104 |
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105 public static String to_string(LuanState luan,Object v) throws LuanException { |
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106 return luan.toString(v); |
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107 } |
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108 |
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109 public static LuanTable new_error(LuanState luan,Object msg) throws LuanException { |
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110 String s = luan.toString(msg); |
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111 LuanTable tbl = new LuanException(s).table(); |
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112 tbl.rawPut( "message", msg ); |
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113 return tbl; |
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114 } |
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115 |
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116 public static String assert_string(String v) throws LuanException { |
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117 Utils.checkNotNull(v); |
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118 return v; |
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119 } |
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120 |
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121 public static Number assert_number(Number v) throws LuanException { |
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122 Utils.checkNotNull(v); |
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123 return v; |
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124 } |
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125 |
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126 public static LuanTable assert_table(LuanTable v) throws LuanException { |
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127 Utils.checkNotNull(v); |
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128 return v; |
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129 } |
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130 |
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131 public static boolean assert_boolean(boolean v) throws LuanException { |
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132 return v; |
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133 } |
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134 |
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135 public static int assert_integer(int v) throws LuanException { |
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136 return v; |
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137 } |
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138 |
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139 public static long assert_long(long v) throws LuanException { |
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140 return v; |
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141 } |
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142 |
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143 public static double assert_double(double v) throws LuanException { |
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144 return v; |
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145 } |
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146 |
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147 @LuanMethod public static byte[] assert_binary(byte[] v) throws LuanException { |
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148 Utils.checkNotNull(v); |
447 | 149 return v; |
150 } | |
151 | |
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152 public static LuanFunction assert_function(LuanFunction v) throws LuanException { |
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153 Utils.checkNotNull(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 LuanFunction range(final double from,final double to,Double stepV) throws LuanException { |
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158 final double step = stepV==null ? 1.0 : stepV; |
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159 if( step == 0.0 ) |
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160 throw new LuanException("bad argument #3 (step may not be zero)"); |
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161 return new LuanFunction() { |
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162 double v = from; |
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163 |
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164 @Override public Object call(LuanState luan,Object[] args) { |
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165 if( step > 0.0 && v > to || step < 0.0 && v < to ) |
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166 return LuanFunction.NOTHING; |
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167 double rtn = v; |
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168 v += step; |
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169 return rtn; |
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170 } |
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171 }; |
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172 } |
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173 |
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174 public static LuanFunction values(final Object... args) throws LuanException { |
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175 return new LuanFunction() { |
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176 int i = 0; |
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177 |
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178 @Override public Object call(LuanState luan,Object[] unused) { |
402 | 179 if( i >= args.length ) |
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180 return LuanFunction.NOTHING; |
402 | 181 return args[i++]; |
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182 } |
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183 }; |
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184 } |
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185 |
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186 private LuanFunction fn(Object obj) { |
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187 return obj instanceof LuanFunction ? (LuanFunction)obj : null; |
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188 } |
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189 |
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190 public static Object try_(LuanState luan,LuanTable blocks,Object... args) throws LuanException { |
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191 Utils.checkNotNull(blocks); |
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192 Object obj = blocks.get(luan,1); |
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193 if( obj == null ) |
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194 throw new LuanException("missing 'try' value"); |
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195 if( !(obj instanceof LuanFunction) ) |
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196 throw new LuanException("bad 'try' value (function expected, got "+Luan.type(obj)+")"); |
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197 LuanFunction tryFn = (LuanFunction)obj; |
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198 LuanFunction catchFn = null; |
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199 obj = blocks.get(luan,"catch"); |
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200 if( obj != null ) { |
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201 if( !(obj instanceof LuanFunction) ) |
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202 throw new LuanException("bad 'catch' value (function expected, got "+Luan.type(obj)+")"); |
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203 catchFn = (LuanFunction)obj; |
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204 } |
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205 LuanFunction finallyFn = null; |
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206 obj = blocks.get(luan,"finally"); |
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207 if( obj != null ) { |
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208 if( !(obj instanceof LuanFunction) ) |
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209 throw new LuanException("bad 'finally' value (function expected, got "+Luan.type(obj)+")"); |
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210 finallyFn = (LuanFunction)obj; |
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211 } |
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212 try { |
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213 return tryFn.call(luan,args); |
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214 } catch(LuanException e) { |
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215 if( catchFn == null ) |
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216 throw e; |
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217 return catchFn.call(luan,new Object[]{e.table()}); |
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218 } finally { |
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219 if( finallyFn != null ) |
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220 finallyFn.call(luan); |
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221 } |
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222 } |
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223 |
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224 @LuanMethod public static Object[] pcall(LuanState luan,LuanFunction f,Object... args) { |
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225 try { |
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226 Object[] r = Luan.array(f.call(luan,args)); |
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227 Object[] rtn = new Object[r.length+1]; |
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228 rtn[0] = true; |
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229 for( int i=0; i<r.length; i++ ) { |
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230 rtn[i+1] = r[i]; |
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231 } |
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232 return rtn; |
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233 } catch(LuanException e) { |
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234 return new Object[]{false,e.table()}; |
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235 } |
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236 } |
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237 |
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238 public static String number_type(Number v) throws LuanException { |
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239 Utils.checkNotNull(v); |
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240 return v.getClass().getSimpleName().toLowerCase(); |
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241 } |
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242 |
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243 } |