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annotate src/luan/LuaJavaFunction.java @ 43:80b67b1a653c

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implement string lib git-svn-id: https://luan-java.googlecode.com/svn/trunk@44 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 25 Dec 2012 03:42:42 +0000
parents e3624b7cd603
children 57054fa43189
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan;
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3 import java.lang.reflect.Array;
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4 import java.lang.reflect.Method;
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5 import java.lang.reflect.Constructor;
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6 import java.lang.reflect.InvocationTargetException;
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9 public final class LuaJavaFunction extends LuaFunction {
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10 private final JavaMethod method;
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11 private final Object obj;
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12 private final RtnConverter rtnConverter;
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13 private final boolean takesLuaState;
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14 private final ArgConverter[] argConverters;
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15 private final Class<?> varArgCls;
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17 public LuaJavaFunction(Method method,Object obj) {
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18 this( JavaMethod.of(method), obj );
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19 }
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21 public LuaJavaFunction(Constructor constr,Object obj) {
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22 this( JavaMethod.of(constr), obj );
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23 }
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25 LuaJavaFunction(JavaMethod method,Object obj) {
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26 this.method = method;
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27 this.obj = obj;
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28 this.rtnConverter = getRtnConverter(method);
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29 this.takesLuaState = takesLuaState(method);
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30 this.argConverters = getArgConverters(takesLuaState,method);
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31 if( method.isVarArgs() ) {
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32 Class<?>[] paramTypes = method.getParameterTypes();
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33 this.varArgCls = paramTypes[paramTypes.length-1].getComponentType();
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34 } else {
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35 this.varArgCls = null;
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36 }
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37 }
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38
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39 public Class<?>[] getParameterTypes() {
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40 return method.getParameterTypes();
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41 }
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43 @Override public Object[] call(LuaState lua,Object[] args) throws LuaException {
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44 args = fixArgs(lua,args);
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45 Object rtn;
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46 try {
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47 rtn = method.invoke(obj,args);
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48 } catch(IllegalAccessException e) {
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49 throw new RuntimeException(e);
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50 } catch(InvocationTargetException e) {
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51 Throwable cause = e.getCause();
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52 if( cause instanceof Error )
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53 throw (Error)cause;
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54 if( cause instanceof RuntimeException )
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55 throw (RuntimeException)cause;
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56 if( cause instanceof LuaException )
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57 throw (LuaException)cause;
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58 throw new RuntimeException(e);
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59 } catch(InstantiationException e) {
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60 throw new RuntimeException(e);
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61 }
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62 return rtnConverter.convert(rtn);
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63 }
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64
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65 private Object[] fixArgs(LuaState lua,Object[] args) {
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66 int n = argConverters.length;
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67 Object[] rtn;
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68 int start = 0;
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69 if( !takesLuaState && varArgCls==null && args.length == n ) {
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70 rtn = args;
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71 } else {
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72 if( takesLuaState )
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73 n++;
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74 rtn = new Object[n];
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75 if( takesLuaState ) {
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76 rtn[start++] = lua;
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77 }
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78 n = argConverters.length;
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79 if( varArgCls != null ) {
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80 n--;
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81 if( args.length < argConverters.length ) {
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82 rtn[rtn.length-1] = Array.newInstance(varArgCls,0);
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83 } else {
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84 int len = args.length - n;
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85 Object varArgs = Array.newInstance(varArgCls,len);
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86 ArgConverter ac = argConverters[n];
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87 for( int i=0; i<len; i++ ) {
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88 Array.set( varArgs, i, ac.convert(args[n+i]) );
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89 }
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90 rtn[rtn.length-1] = varArgs;
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91 }
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92 }
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93 System.arraycopy(args,0,rtn,start,Math.min(args.length,n));
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94 }
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95 for( int i=0; i<n; i++ ) {
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96 rtn[start+i] = argConverters[i].convert(rtn[start+i]);
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97 }
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98 return rtn;
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99 }
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102 private interface RtnConverter {
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103 public Object[] convert(Object obj);
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104 }
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105
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106 private static final RtnConverter RTN_EMPTY = new RtnConverter() {
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107 public Object[] convert(Object obj) {
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108 return EMPTY_RTN;
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109 }
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110 };
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111
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112 private static final RtnConverter RTN_ARRAY = new RtnConverter() {
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113 public Object[] convert(Object obj) {
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114 if( obj == null )
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115 return NULL_RTN;
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116 return (Object[])obj;
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117 }
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118 };
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119
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120 private static final RtnConverter RTN_ONE = new RtnConverter() {
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121 public Object[] convert(Object obj) {
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122 return new Object[]{obj};
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123 }
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124 };
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125
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126 private static final Object[] NULL_RTN = new Object[1];
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127
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128 private static final RtnConverter RTN_NUMBER = new RtnConverter() {
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129 public Object[] convert(Object obj) {
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130 if( obj == null )
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131 return NULL_RTN;
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132 Number n = (Number)obj;
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133 LuaNumber ln = new LuaNumber(n.doubleValue());
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134 return new Object[]{ln};
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135 }
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136 };
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137
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138 private static final RtnConverter RTN_NUMBER_ARRAY = new RtnConverter() {
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139 public Object[] convert(Object obj) {
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140 if( obj == null )
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141 return NULL_RTN;
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142 Object[] rtn = new Object[Array.getLength(obj)];
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143 for( int i=0; i<rtn.length; i++ ) {
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144 Number n = (Number)Array.get(obj,i);
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145 if( n != null )
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146 rtn[i] = new LuaNumber(n.doubleValue());
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147 }
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148 return rtn;
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149 }
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150 };
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151
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152 private static RtnConverter getRtnConverter(JavaMethod m) {
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153 Class<?> rtnType = m.getReturnType();
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154 if( rtnType == Void.TYPE )
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155 return RTN_EMPTY;
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156 if( isNumber(rtnType) )
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157 return RTN_NUMBER;
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158 if( rtnType.isArray() ) {
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159 rtnType = rtnType.getComponentType();
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160 if( isNumber(rtnType) )
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161 return RTN_NUMBER_ARRAY;
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162 return RTN_ARRAY;
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163 }
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164 return RTN_ONE;
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165 }
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166
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167 private static boolean isNumber(Class<?> rtnType) {
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168 return Number.class.isAssignableFrom(rtnType)
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169 || rtnType == Byte.TYPE
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170 || rtnType == Short.TYPE
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171 || rtnType == Integer.TYPE
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172 || rtnType == Long.TYPE
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173 || rtnType == Float.TYPE
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174 || rtnType == Double.TYPE
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175 ;
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176 }
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177
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178
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179 private interface ArgConverter {
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180 public Object convert(Object obj);
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181 }
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182
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183 private static final ArgConverter ARG_SAME = new ArgConverter() {
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184 public Object convert(Object obj) {
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185 return obj;
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186 }
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187 };
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188
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189 private static final ArgConverter ARG_DOUBLE = new ArgConverter() {
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190 public Object convert(Object obj) {
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191 if( obj instanceof LuaNumber ) {
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192 LuaNumber ln = (LuaNumber)obj;
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193 return Double.valueOf(ln.n);
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194 }
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195 if( obj instanceof String ) {
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196 String s = (String)obj;
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197 try {
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198 return Double.valueOf(s);
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199 } catch(NumberFormatException e) {}
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200 }
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201 return obj;
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202 }
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203 };
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204
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205 private static final ArgConverter ARG_FLOAT = new ArgConverter() {
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206 public Object convert(Object obj) {
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207 if( obj instanceof LuaNumber ) {
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208 LuaNumber ln = (LuaNumber)obj;
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209 return Float.valueOf((float)ln.n);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
210 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
211 if( obj instanceof String ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
212 String s = (String)obj;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
213 try {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
214 return Float.valueOf(s);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
215 } catch(NumberFormatException e) {}
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
216 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
217 return obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
218 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
219 };
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
220
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
221 private static final ArgConverter ARG_LONG = new ArgConverter() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
222 public Object convert(Object obj) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
223 if( obj instanceof LuaNumber ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
224 LuaNumber ln = (LuaNumber)obj;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
225 long i = (long)ln.n;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
226 if( i == ln.n )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
227 return Long.valueOf(i);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
228 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
229 else if( obj instanceof String ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
230 String s = (String)obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
231 try {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
232 return Long.valueOf(s);
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
233 } catch(NumberFormatException e) {}
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
234 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
235 return obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
236 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
237 };
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
238
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
239 private static final ArgConverter ARG_INTEGER = new ArgConverter() {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
240 public Object convert(Object obj) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
241 if( obj instanceof LuaNumber ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
242 LuaNumber ln = (LuaNumber)obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
243 int i = (int)ln.n;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
244 if( i == ln.n )
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
245 return Integer.valueOf(i);
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
246 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
247 else if( obj instanceof String ) {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
248 String s = (String)obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
249 try {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
250 return Integer.valueOf(s);
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
251 } catch(NumberFormatException e) {}
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
252 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
253 return obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
254 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
255 };
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
256
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
257 private static final ArgConverter ARG_SHORT = new ArgConverter() {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
258 public Object convert(Object obj) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
259 if( obj instanceof LuaNumber ) {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
260 LuaNumber ln = (LuaNumber)obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
261 short i = (short)ln.n;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
262 if( i == ln.n )
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
263 return Short.valueOf(i);
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
264 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
265 else if( obj instanceof String ) {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
266 String s = (String)obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
267 try {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
268 return Short.valueOf(s);
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
269 } catch(NumberFormatException e) {}
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
270 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
271 return obj;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
272 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
273 };
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
274
43
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
275 private static final ArgConverter ARG_BYTE = new ArgConverter() {
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
276 public Object convert(Object obj) {
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
277 if( obj instanceof LuaNumber ) {
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
278 LuaNumber ln = (LuaNumber)obj;
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
279 byte i = (byte)ln.n;
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
280 if( i == ln.n )
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
281 return Byte.valueOf(i);
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
282 }
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
283 else if( obj instanceof String ) {
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
284 String s = (String)obj;
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
285 try {
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
286 return Byte.valueOf(s);
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
287 } catch(NumberFormatException e) {}
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
288 }
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
289 return obj;
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
290 }
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
291 };
80b67b1a653c implement string lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
292
37
8a57ebfdfd78 add JavaLib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
293 private static boolean takesLuaState(JavaMethod m) {
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
294 Class<?>[] paramTypes = m.getParameterTypes();
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
295 return paramTypes.length > 0 && paramTypes[0].equals(LuaState.class);
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
296 }
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
297
37
8a57ebfdfd78 add JavaLib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
298 private static ArgConverter[] getArgConverters(boolean takesLuaState,JavaMethod m) {
4
24fd6381caca add to interp
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 2
diff changeset
299 final boolean isVarArgs = m.isVarArgs();
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
300 Class<?>[] paramTypes = m.getParameterTypes();
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
301 if( takesLuaState ) {
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
302 Class<?>[] t = new Class<?>[paramTypes.length-1];
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
303 System.arraycopy(paramTypes,1,t,0,t.length);
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
304 paramTypes = t;
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 12
diff changeset
305 }
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
306 ArgConverter[] a = new ArgConverter[paramTypes.length];
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
307 for( int i=0; i<a.length; i++ ) {
4
24fd6381caca add to interp
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 2
diff changeset
308 Class<?> paramType = paramTypes[i];
24fd6381caca add to interp
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 2
diff changeset
309 if( isVarArgs && i == a.length-1 )
24fd6381caca add to interp
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 2
diff changeset
310 paramType = paramType.getComponentType();
24fd6381caca add to interp
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 2
diff changeset
311 a[i] = getArgConverter(paramType);
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
312 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
313 return a;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
314 }
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
315
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
316 private static ArgConverter getArgConverter(Class<?> cls) {
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
317 if( cls == Double.TYPE || cls.equals(Double.class) )
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318 return ARG_DOUBLE;
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319 if( cls == Float.TYPE || cls.equals(Float.class) )
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320 return ARG_FLOAT;
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321 if( cls == Long.TYPE || cls.equals(Long.class) )
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322 return ARG_LONG;
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323 if( cls == Integer.TYPE || cls.equals(Integer.class) )
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324 return ARG_INTEGER;
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325 if( cls == Short.TYPE || cls.equals(Short.class) )
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326 return ARG_SHORT;
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327 if( cls == Byte.TYPE || cls.equals(Byte.class) )
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328 return ARG_BYTE;
1
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329 return ARG_SAME;
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330 }
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331
37
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332
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333
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334 private static abstract class JavaMethod {
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335 abstract boolean isVarArgs();
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336 abstract Class<?>[] getParameterTypes();
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337 abstract Object invoke(Object obj,Object... args)
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338 throws IllegalAccessException, IllegalArgumentException, InvocationTargetException, InstantiationException;
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339 abstract Class<?> getReturnType();
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340
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341 static JavaMethod of(final Method m) {
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342 return new JavaMethod() {
43
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343 @Override boolean isVarArgs() {
37
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344 return m.isVarArgs();
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345 }
43
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346 @Override Class<?>[] getParameterTypes() {
37
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347 return m.getParameterTypes();
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348 }
43
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349 @Override Object invoke(Object obj,Object... args)
37
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350 throws IllegalAccessException, IllegalArgumentException, InvocationTargetException
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351 {
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352 return m.invoke(obj,args);
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353 }
43
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354 @Override Class<?> getReturnType() {
37
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355 return m.getReturnType();
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356 }
43
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357 @Override public String toString() {
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358 return m.toString();
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359 }
37
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360 };
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361 }
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362
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diff changeset
363 static JavaMethod of(final Constructor c) {
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364 return new JavaMethod() {
43
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365 @Override boolean isVarArgs() {
37
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366 return c.isVarArgs();
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367 }
43
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diff changeset
368 @Override Class<?>[] getParameterTypes() {
37
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369 return c.getParameterTypes();
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370 }
43
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diff changeset
371 @Override Object invoke(Object obj,Object... args)
37
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diff changeset
372 throws IllegalAccessException, IllegalArgumentException, InvocationTargetException, InstantiationException
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
373 {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
374 return c.newInstance(args);
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diff changeset
375 }
43
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diff changeset
376 @Override Class<?> getReturnType() {
37
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
377 return c.getDeclaringClass();
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diff changeset
378 }
43
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diff changeset
379 @Override public String toString() {
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diff changeset
380 return c.toString();
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diff changeset
381 }
37
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diff changeset
382 };
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diff changeset
383 }
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diff changeset
384
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diff changeset
385 }
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diff changeset
386
1
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387 }