Mercurial Hosting > luan
annotate core/src/luan/impl/LuanImpl.java @ 663:b438a47196bc
finish compiling function blocks
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 07 Apr 2016 00:01:10 -0600 |
parents | ee00a619eec1 |
children | 71f8f5075df8 |
rev | line source |
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1 package luan.impl; |
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2 |
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3 import java.util.Arrays; |
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4 import java.util.List; |
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5 import java.util.ArrayList; |
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6 import luan.Luan; |
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7 import luan.LuanState; |
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8 import luan.LuanTable; |
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9 import luan.LuanFunction; |
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10 import luan.LuanException; |
660 | 11 import luan.modules.JavaLuan; |
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12 |
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13 |
654 | 14 public final class LuanImpl { |
15 private LuanImpl() {} // never | |
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16 |
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17 |
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18 private static List<Expressions> listExpressions = new ArrayList<Expressions>(); |
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19 |
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20 static int addExpressions(Expressions exp) { |
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21 int i = listExpressions.size(); |
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22 listExpressions.add(exp); |
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23 return i; |
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24 } |
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25 |
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26 public static Expressions getExpressions(int i) { |
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27 return listExpressions.get(i); |
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28 } |
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29 |
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30 /* |
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31 private static List<Stmt> listStmt = new ArrayList<Stmt>(); |
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32 |
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33 static int addStmt(Stmt stmt) { |
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34 int i = listStmt.size(); |
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35 listStmt.add(stmt); |
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36 return i; |
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37 } |
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38 |
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39 public static Stmt getStmt(int i) { |
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40 return listStmt.get(i); |
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41 } |
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42 */ |
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43 |
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44 private static List<Settable> listSettable = new ArrayList<Settable>(); |
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45 |
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46 static int addSettable(Settable settable) { |
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47 int i = listSettable.size(); |
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48 listSettable.add(settable); |
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49 return i; |
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50 } |
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51 |
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52 public static Settable getSettable(int i) { |
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53 return listSettable.get(i); |
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54 } |
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55 |
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56 |
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57 public static int len(LuanState luan,Object o) throws LuanException { |
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58 if( o instanceof String ) { |
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59 String s = (String)o; |
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60 return s.length(); |
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61 } |
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62 if( o instanceof byte[] ) { |
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63 byte[] a = (byte[])o; |
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64 return a.length; |
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65 } |
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66 if( o instanceof LuanTable ) { |
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67 LuanTable t = (LuanTable)o; |
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68 return t.length(luan); |
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69 } |
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70 throw new LuanException( "attempt to get length of a " + Luan.type(o) + " value" ); |
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71 } |
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72 |
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73 public static Object unm(LuanState luan,Object o) throws LuanException { |
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74 if( o instanceof Number ) |
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75 return -((Number)o).doubleValue(); |
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76 if( o instanceof LuanTable ) { |
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77 LuanFunction fn = Luan.getHandlerFunction("__unm",(LuanTable)o); |
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78 if( fn != null ) { |
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79 return Luan.first(fn.call(luan,new Object[]{o})); |
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80 } |
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81 } |
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82 throw new LuanException("attempt to perform arithmetic on a "+Luan.type(o)+" value"); |
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83 } |
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84 |
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85 private static Object arithmetic(LuanState luan,String op,Object o1,Object o2) throws LuanException { |
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86 LuanFunction fn = Luan.getBinHandler(op,o1,o2); |
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87 if( fn != null ) |
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88 return Luan.first(fn.call(luan,new Object[]{o1,o2})); |
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89 String type = !(o1 instanceof Number) ? Luan.type(o1) : Luan.type(o2); |
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90 throw new LuanException("attempt to perform arithmetic on a "+type+" value"); |
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91 } |
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92 |
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93 public static Object pow(LuanState luan,Object o1,Object o2) throws LuanException { |
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94 if( o1 instanceof Number && o2 instanceof Number ) |
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95 return Math.pow( ((Number)o1).doubleValue(), ((Number)o2).doubleValue() ); |
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96 return arithmetic(luan,"__pow",o1,o2); |
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97 } |
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98 |
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99 public static Object mul(LuanState luan,Object o1,Object o2) throws LuanException { |
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100 if( o1 instanceof Number && o2 instanceof Number ) |
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101 return ((Number)o1).doubleValue() * ((Number)o2).doubleValue(); |
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102 return arithmetic(luan,"__mul",o1,o2); |
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103 } |
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104 |
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105 public static Object div(LuanState luan,Object o1,Object o2) throws LuanException { |
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106 if( o1 instanceof Number && o2 instanceof Number ) |
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107 return ((Number)o1).doubleValue() / ((Number)o2).doubleValue(); |
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108 return arithmetic(luan,"__div",o1,o2); |
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109 } |
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110 |
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111 public static Object mod(LuanState luan,Object o1,Object o2) throws LuanException { |
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112 if( o1 instanceof Number && o2 instanceof Number ) { |
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113 double d1 = ((Number)o1).doubleValue(); |
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114 double d2 = ((Number)o2).doubleValue(); |
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115 return d1 - Math.floor(d1/d2)*d2; |
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116 } |
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117 return arithmetic(luan,"__mod",o1,o2); |
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118 } |
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119 |
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120 public static Object add(LuanState luan,Object o1,Object o2) throws LuanException { |
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121 if( o1 instanceof Number && o2 instanceof Number ) |
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122 return ((Number)o1).doubleValue() + ((Number)o2).doubleValue(); |
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123 return arithmetic(luan,"__add",o1,o2); |
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124 } |
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125 |
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126 public static Object sub(LuanState luan,Object o1,Object o2) throws LuanException { |
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127 if( o1 instanceof Number && o2 instanceof Number ) |
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128 return ((Number)o1).doubleValue() - ((Number)o2).doubleValue(); |
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129 return arithmetic(luan,"__sub",o1,o2); |
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130 } |
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131 |
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132 public static Object concat(LuanState luan,Object o1,Object o2) throws LuanException { |
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133 LuanFunction fn = Luan.getBinHandler("__concat",o1,o2); |
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134 if( fn != null ) |
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135 return Luan.first(fn.call(luan,new Object[]{o1,o2})); |
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136 String s1 = luan.toString(o1); |
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137 String s2 = luan.toString(o2); |
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138 return s1 + s2; |
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139 } |
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140 |
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141 public static boolean eq(LuanState luan,Object o1,Object o2) throws LuanException { |
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142 if( o1 == o2 || o1 != null && o1.equals(o2) ) |
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143 return true; |
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144 if( o1 instanceof Number && o2 instanceof Number ) { |
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145 Number n1 = (Number)o1; |
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146 Number n2 = (Number)o2; |
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147 return n1.doubleValue() == n2.doubleValue(); |
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148 } |
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149 if( o1 instanceof byte[] && o2 instanceof byte[] ) { |
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150 byte[] b1 = (byte[])o1; |
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151 byte[] b2 = (byte[])o2; |
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152 return Arrays.equals(b1,b2); |
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153 } |
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154 if( !(o1 instanceof LuanTable && o2 instanceof LuanTable) ) |
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155 return false; |
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156 LuanTable t1 = (LuanTable)o1; |
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157 LuanTable t2 = (LuanTable)o2; |
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158 LuanTable mt1 = t1.getMetatable(); |
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159 LuanTable mt2 = t2.getMetatable(); |
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160 if( mt1==null || mt2==null ) |
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161 return false; |
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162 Object f = mt1.rawGet("__eq"); |
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163 if( f == null || !f.equals(mt2.rawGet("__eq")) ) |
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164 return false; |
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165 LuanFunction fn = Luan.checkFunction(f); |
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166 return Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o1,o2})) ); |
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167 } |
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168 |
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169 public static boolean le(LuanState luan,Object o1,Object o2) throws LuanException { |
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170 if( o1 instanceof Number && o2 instanceof Number ) { |
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171 Number n1 = (Number)o1; |
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172 Number n2 = (Number)o2; |
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173 return n1.doubleValue() <= n2.doubleValue(); |
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174 } |
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175 if( o1 instanceof String && o2 instanceof String ) { |
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176 String s1 = (String)o1; |
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177 String s2 = (String)o2; |
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178 return s1.compareTo(s2) <= 0; |
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179 } |
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180 LuanFunction fn = Luan.getBinHandler("__le",o1,o2); |
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181 if( fn != null ) |
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182 return Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o1,o2})) ); |
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183 fn = Luan.getBinHandler("__lt",o1,o2); |
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184 if( fn != null ) |
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185 return !Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o2,o1})) ); |
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186 throw new LuanException( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) ); |
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187 } |
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188 |
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189 public static boolean lt(LuanState luan,Object o1,Object o2) throws LuanException { |
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190 return Luan.isLessThan(luan,o1,o2); |
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191 } |
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192 |
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193 public static boolean cnd(Object o) throws LuanException { |
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194 return !(o == null || Boolean.FALSE.equals(o)); |
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195 } |
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196 |
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197 public static void nop(Object o) {} |
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198 |
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199 |
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200 public static void set(LuanStateImpl luan,Settable[] vars,Object obj) throws LuanException { |
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201 if( obj instanceof Object[] ) { |
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202 Object[] vals = (Object[])obj; |
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203 for( int i=0; i<vars.length; i++ ) { |
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204 Object val = i < vals.length ? vals[i] : null; |
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205 vars[i].set(luan,val); |
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206 } |
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207 } else { |
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208 vars[0].set(luan,obj); |
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209 for( int i=1; i<vars.length; i++ ) { |
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210 vars[i].set(luan,null); |
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211 } |
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212 } |
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213 } |
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214 |
660 | 215 public static void put(LuanState luan,Object t,Object key,Object value) throws LuanException { |
216 if( t instanceof LuanTable ) { | |
217 LuanTable tbl = (LuanTable)t; | |
218 tbl.put(luan,key,value); | |
219 return; | |
220 } | |
221 if( t != null && luan.hasJava() ) | |
222 JavaLuan.__new_index(luan,t,key,value); | |
223 else | |
224 throw new LuanException( "attempt to index a " + Luan.type(t) + " value" ); | |
225 } | |
226 | |
662 | 227 public static Object pick(Object o,int i) { |
228 if( i < 1 ) | |
229 throw new RuntimeException(); | |
230 if( !(o instanceof Object[]) ) | |
231 return null; | |
232 Object[] a = (Object[])o; | |
233 return i<a.length ? a[i] : null; | |
234 } | |
235 | |
654 | 236 public static Object[] concatArgs(Object o1,Object o2) { |
237 if( o1 instanceof Object[] ) { | |
238 Object[] a1 = (Object[])o1; | |
239 if( o2 instanceof Object[] ) { | |
240 Object[] a2 = (Object[])o2; | |
241 Object[] rtn = new Object[a1.length+a2.length]; | |
242 System.arraycopy(a1,0,rtn,0,a1.length); | |
243 System.arraycopy(a2,0,rtn,a1.length,a2.length); | |
244 return rtn; | |
245 } else { | |
246 Object[] rtn = new Object[a1.length+1]; | |
247 System.arraycopy(a1,0,rtn,0,a1.length); | |
248 rtn[a1.length] = o2; | |
249 return rtn; | |
250 } | |
251 } else { | |
252 if( o2 instanceof Object[] ) { | |
253 Object[] a2 = (Object[])o2; | |
254 Object[] rtn = new Object[1+a2.length]; | |
255 rtn[0] = o1; | |
256 System.arraycopy(a2,0,rtn,1,a2.length); | |
257 return rtn; | |
258 } else { | |
259 Object[] rtn = new Object[2]; | |
260 rtn[0] = o1; | |
261 rtn[2] = o2; | |
262 return rtn; | |
263 } | |
264 } | |
265 } | |
266 | |
655 | 267 public static LuanTable table(Object o) { |
268 LuanTable table = new LuanTable(); | |
269 int i = 0; | |
270 for( Object fld : Luan.array(o) ) { | |
271 if( fld instanceof TableField ) { | |
272 TableField tblFld = (TableField)fld; | |
273 Object key = tblFld.key; | |
274 Object value = tblFld.value; | |
275 if( key != null && value != null ) | |
276 table.rawPut(key,value); | |
277 } else { | |
278 i++; | |
279 if( fld != null ) | |
280 table.rawPut(i,fld); | |
281 } | |
282 } | |
283 return table; | |
284 } | |
285 | |
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286 } |