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annotate src/luan/lib/JavaLib.java @ 100:6c827f7275df

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fix JavaLib.setMember() for int conversion git-svn-id: https://luan-java.googlecode.com/svn/trunk@101 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 11 Apr 2013 21:03:54 +0000
parents b1e87f1bcc13
children 90b918cbf888
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
1 package luan.lib;
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3 import java.lang.reflect.Array;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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4 import java.lang.reflect.AccessibleObject;
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5 import java.lang.reflect.Member;
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6 import java.lang.reflect.Field;
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7 import java.lang.reflect.Method;
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8 import java.lang.reflect.Constructor;
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9 import java.lang.reflect.Modifier;
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10 import java.lang.reflect.InvocationHandler;
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11 import java.lang.reflect.Proxy;
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12 import java.util.Map;
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13 import java.util.HashMap;
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14 import java.util.List;
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15 import java.util.ArrayList;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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16 import java.util.Iterator;
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9381b23ea9e1 various fixes
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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17 import java.util.Collections;
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18 import luan.Luan;
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19 import luan.LuanState;
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20 import luan.LuanTable;
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21 import luan.MetatableGetter;
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22 import luan.LuanException;
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23 import luan.LuanFunction;
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24 import luan.LuanLoader;
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25 import luan.LuanJavaFunction;
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26 import luan.LuanElement;
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29 public final class JavaLib {
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30
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31 public static final String NAME = "Java";
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32
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33 public static final LuanLoader LOADER = new LuanLoader() {
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34 @Override protected void load(LuanState luan) {
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35 luan.addMetatableGetter(mg);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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36 LuanTable module = new LuanTable();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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37 LuanTable global = new LuanTable();
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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38 module.put( LuanState._G, global );
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39 try {
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40 global.put( "import", new LuanJavaFunction(JavaLib.class.getMethod("importClass",LuanState.class,String.class),null) );
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41 module.put( "class", new LuanJavaFunction(JavaLib.class.getMethod("getClass",LuanState.class,String.class),null) );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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42 add( module, "proxy", LuanState.class, Static.class, LuanTable.class, Object.class );
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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43 } catch(NoSuchMethodException e) {
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44 throw new RuntimeException(e);
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45 }
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46 luan.loaded().put(NAME,module);
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47 }
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48 };
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49
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50 private static final LuanTable mt = new LuanTable();
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51 static {
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52 add( mt, "__index", LuanState.class, Object.class, Object.class );
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a68ccb7aaa9c implement setting java field values
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53 add( mt, "__newindex", LuanState.class, Object.class, Object.class, Object.class );
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54 }
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55
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56 private static void add(LuanTable t,String method,Class<?>... parameterTypes) {
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57 try {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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58 t.put( method, new LuanJavaFunction(JavaLib.class.getMethod(method,parameterTypes),null) );
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59 } catch(NoSuchMethodException e) {
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60 throw new RuntimeException(e);
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61 }
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62 }
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64 private static final MetatableGetter mg = new MetatableGetter() {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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65 public LuanTable getMetatable(Object obj) {
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66 if( obj==null )
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67 return null;
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68 return mt;
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69 }
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70 };
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71
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72 public static Object __index(LuanState luan,Object obj,Object key) throws LuanException {
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73 if( obj instanceof Static ) {
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74 if( key instanceof String ) {
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75 String name = (String)key;
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76 Static st = (Static)obj;
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77 Class cls = st.cls;
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78 if( "class".equals(name) ) {
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79 return cls;
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80 } else if( "new".equals(name) ) {
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81 Constructor<?>[] constructors = cls.getConstructors();
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82 if( constructors.length > 0 ) {
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83 if( constructors.length==1 ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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84 return new LuanJavaFunction(constructors[0],null);
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85 } else {
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86 List<LuanJavaFunction> fns = new ArrayList<LuanJavaFunction>();
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87 for( Constructor constructor : constructors ) {
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88 fns.add(new LuanJavaFunction(constructor,null));
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89 }
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90 return new AmbiguousJavaFunction(fns);
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91 }
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92 }
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93 } else if( "assert".equals(name) ) {
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94 return new LuanJavaFunction(assertClass,new AssertClass(cls));
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95 } else {
56
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96 List<Member> members = getStaticMembers(cls,name);
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97 if( !members.isEmpty() ) {
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98 return member(null,members);
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diff changeset
99 }
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100 }
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101 }
88
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102 throw luan.JAVA.exception("invalid member '"+key+"' for: "+obj);
37
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103 }
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104 Class cls = obj.getClass();
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105 if( cls.isArray() ) {
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diff changeset
106 if( "length".equals(key) ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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107 return Array.getLength(obj);
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parents:
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108 }
48
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 46
diff changeset
109 Integer i = Luan.asInteger(key);
46
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
diff changeset
110 if( i != null ) {
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parents: 44
diff changeset
111 return Array.get(obj,i);
37
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112 }
88
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diff changeset
113 throw luan.JAVA.exception("invalid member '"+key+"' for java array: "+obj);
37
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114 }
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115 if( key instanceof String ) {
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116 String name = (String)key;
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117 if( "instanceof".equals(name) ) {
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parents: 46
diff changeset
118 return new LuanJavaFunction(instanceOf,new InstanceOf(obj));
37
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119 } else {
56
c84274b18f0c various
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120 List<Member> members = getMembers(cls,name);
37
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121 if( !members.isEmpty() ) {
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122 return member(obj,members);
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123 }
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124 }
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125 }
88
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
126 throw luan.JAVA.exception("invalid member '"+key+"' for java object: "+obj);
37
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127 }
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128
56
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129 private static Object member(Object obj,List<Member> members) throws LuanException {
37
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130 try {
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131 if( members.size()==1 ) {
56
c84274b18f0c various
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 55
diff changeset
132 Member member = members.get(0);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 55
diff changeset
133 if( member instanceof Static ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 55
diff changeset
134 return member;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 55
diff changeset
135 } else if( member instanceof Field ) {
37
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
136 Field field = (Field)member;
46
a443637829c1 remove LuaNumber
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 44
diff changeset
137 return field.get(obj);
37
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
138 } else {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
139 Method method = (Method)member;
48
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 46
diff changeset
140 return new LuanJavaFunction(method,obj);
37
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diff changeset
141 }
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parents:
diff changeset
142 } else {
48
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 46
diff changeset
143 List<LuanJavaFunction> fns = new ArrayList<LuanJavaFunction>();
56
c84274b18f0c various
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 55
diff changeset
144 for( Member member : members ) {
37
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
145 Method method = (Method)member;
48
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 46
diff changeset
146 fns.add(new LuanJavaFunction(method,obj));
37
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diff changeset
147 }
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parents:
diff changeset
148 return new AmbiguousJavaFunction(fns);
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parents:
diff changeset
149 }
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parents:
diff changeset
150 } catch(IllegalAccessException e) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
151 throw new RuntimeException(e);
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diff changeset
152 }
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parents:
diff changeset
153 }
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diff changeset
154
60
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parents: 58
diff changeset
155 public static void __newindex(LuanState luan,Object obj,Object key,Object value) throws LuanException {
a68ccb7aaa9c implement setting java field values
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parents: 58
diff changeset
156 if( obj instanceof Static ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
157 if( key instanceof String ) {
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parents: 58
diff changeset
158 String name = (String)key;
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parents: 58
diff changeset
159 Static st = (Static)obj;
a68ccb7aaa9c implement setting java field values
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parents: 58
diff changeset
160 Class cls = st.cls;
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
161 List<Member> members = getStaticMembers(cls,name);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
162 if( !members.isEmpty() ) {
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
163 if( members.size() != 1 )
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
164 throw new RuntimeException("not field '"+name+"' of "+obj);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
165 setMember(obj,members,value);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
166 return;
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parents: 58
diff changeset
167 }
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parents: 58
diff changeset
168 }
88
6ca02b188dba add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 86
diff changeset
169 throw luan.JAVA.exception("invalid member '"+key+"' for: "+obj);
60
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
170 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
171 Class cls = obj.getClass();
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
172 if( cls.isArray() ) {
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
173 Integer i = Luan.asInteger(key);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
174 if( i != null ) {
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
175 Array.set(obj,i,value);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
176 return;
a68ccb7aaa9c implement setting java field values
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parents: 58
diff changeset
177 }
88
6ca02b188dba add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 86
diff changeset
178 throw luan.JAVA.exception("invalid member '"+key+"' for java array: "+obj);
60
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
179 }
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parents: 58
diff changeset
180 if( key instanceof String ) {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
181 String name = (String)key;
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
182 List<Member> members = getMembers(cls,name);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
183 if( !members.isEmpty() ) {
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
184 if( members.size() != 1 )
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
185 throw new RuntimeException("not field '"+name+"' of "+obj);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
186 setMember(obj,members,value);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
187 return;
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
188 }
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parents: 58
diff changeset
189 }
88
6ca02b188dba add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 86
diff changeset
190 throw luan.JAVA.exception("invalid member '"+key+"' for java object: "+obj);
60
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
191 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
192
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
193 private static void setMember(Object obj,List<Member> members,Object value) {
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
194 Field field = (Field)members.get(0);
a68ccb7aaa9c implement setting java field values
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 58
diff changeset
195 try {
100
6c827f7275df fix JavaLib.setMember() for int conversion
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 90
diff changeset
196 try {
6c827f7275df fix JavaLib.setMember() for int conversion
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 90
diff changeset
197 field.set(obj,value);
6c827f7275df fix JavaLib.setMember() for int conversion
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 90
diff changeset
198 } catch(IllegalArgumentException e) {
6c827f7275df fix JavaLib.setMember() for int conversion
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 90
diff changeset
199 Class cls = field.getType();
6c827f7275df fix JavaLib.setMember() for int conversion
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 90
diff changeset
200 if( value instanceof Number ) {
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201 Number n = (Number)value;
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202 if( cls.equals(Integer.TYPE) || cls.equals(Integer.class) ) {
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203 int r = n.intValue();
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204 if( r==n.doubleValue() ) {
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205 field.setInt(obj,r);
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206 return;
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207 }
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208 }
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209 }
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210 throw e;
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211 }
60
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212 } catch(IllegalAccessException e) {
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213 throw new RuntimeException(e);
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214 }
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215 }
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216
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217 private static Map<Class,Map<String,List<Member>>> memberMap = new HashMap<Class,Map<String,List<Member>>>();
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218
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219 private static synchronized List<Member> getMembers(Class cls,String name) {
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220 Map<String,List<Member>> clsMap = memberMap.get(cls);
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221 if( clsMap == null ) {
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222 clsMap = new HashMap<String,List<Member>>();
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223 for( Class c : cls.getClasses() ) {
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224 String s = c.getSimpleName();
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225 List<Member> list = new ArrayList<Member>();
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226 clsMap.put(s,list);
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227 list.add(new Static(c));
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228 }
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229 for( Field field : cls.getFields() ) {
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230 String s = field.getName();
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231 try {
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232 if( !cls.getField(s).equals(field) )
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233 continue; // not accessible
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234 } catch(NoSuchFieldException e) {
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235 throw new RuntimeException(e);
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236 }
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237 List<Member> list = new ArrayList<Member>();
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238 clsMap.put(s,list);
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239 list = new ArrayList<Member>();
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240 clsMap.put(s,list);
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241 list.add(field);
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242 }
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243 for( Method method : cls.getMethods() ) {
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244 String s = method.getName();
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245 List<Member> list = clsMap.get(s);
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246 if( list == null || !(list.get(0) instanceof Method) ) {
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247 list = new ArrayList<Member>();
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248 clsMap.put(s,list);
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249 }
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250 list.add(method);
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251 }
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252 for( List<Member> members : clsMap.values() ) {
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253 for( Member m : members ) {
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254 if( m instanceof AccessibleObject )
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255 ((AccessibleObject)m).setAccessible(true);
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256 }
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257 }
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258 memberMap.put(cls,clsMap);
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259 }
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260 List<Member> rtn = clsMap.get(name);
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261 if( rtn==null )
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262 rtn = Collections.emptyList();
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263 return rtn;
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264 }
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265
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266 private static synchronized List<Member> getStaticMembers(Class cls,String name) {
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267 List<Member> staticMembers = new ArrayList<Member>();
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268 for( Member m : getMembers(cls,name) ) {
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269 if( Modifier.isStatic(m.getModifiers()) )
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270 staticMembers.add(m);
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271 }
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272 return staticMembers;
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273 }
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274
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275 static final class Static implements Member {
37
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276 final Class cls;
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277
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278 Static(Class cls) {
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279 this.cls = cls;
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280 }
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281
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282 @Override public String toString() {
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283 return cls.toString();
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284 }
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285
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286 @Override public Class<?> getDeclaringClass() {
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287 return cls.getDeclaringClass();
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288 }
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289
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290 @Override public String getName() {
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291 return cls.getName();
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292 }
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293
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294 @Override public int getModifiers() {
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295 return cls.getModifiers();
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296 }
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297
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298 @Override public boolean isSynthetic() {
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299 return cls.isSynthetic();
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300 }
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301 }
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302
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diff changeset
303 public static Static getClass(LuanState luan,String name) throws LuanException {
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diff changeset
304 Class cls;
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305 try {
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306 cls = Class.forName(name);
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307 } catch(ClassNotFoundException e) {
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308 try {
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309 cls = Thread.currentThread().getContextClassLoader().loadClass(name);
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310 } catch(ClassNotFoundException e2) {
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311 throw luan.JAVA.exception(e);
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312 }
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313 }
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314 return new Static(cls);
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315 }
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316
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317 public static void importClass(LuanState luan,String name) throws LuanException {
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318 luan.currentEnvironment().put( name.substring(name.lastIndexOf('.')+1), getClass(luan,name) );
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319 }
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320
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321 static class AmbiguousJavaFunction extends LuanFunction {
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322 private final Map<Integer,List<LuanJavaFunction>> fnMap = new HashMap<Integer,List<LuanJavaFunction>>();
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323
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324 AmbiguousJavaFunction(List<LuanJavaFunction> fns) {
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325 for( LuanJavaFunction fn : fns ) {
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326 Integer n = fn.getParameterTypes().length;
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327 List<LuanJavaFunction> list = fnMap.get(n);
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328 if( list==null ) {
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329 list = new ArrayList<LuanJavaFunction>();
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330 fnMap.put(n,list);
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331 }
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332 list.add(fn);
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333 }
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334 }
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335
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336 @Override public Object[] call(LuanState luan,Object[] args) throws LuanException {
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337 for( LuanJavaFunction fn : fnMap.get(args.length) ) {
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338 try {
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339 return fn.rawCall(luan,args);
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340 } catch(IllegalArgumentException e) {}
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341 }
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342 throw luan.JAVA.exception("no method matched args");
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343 }
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344 }
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345
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346 private static class InstanceOf {
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347 private final Object obj;
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348
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349 InstanceOf(Object obj) {
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350 this.obj = obj;
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351 }
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352
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353 public boolean instanceOf(Static st) {
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354 return st.cls.isInstance(obj);
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355 }
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356 }
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357 private static final Method instanceOf;
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358 static {
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359 try {
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360 instanceOf = InstanceOf.class.getMethod("instanceOf",Static.class);
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361 instanceOf.setAccessible(true);
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362 } catch(NoSuchMethodException e) {
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363 throw new RuntimeException(e);
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364 }
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365 }
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366
61
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diff changeset
367
64
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368 private static class AssertClass {
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369 private final Class cls;
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370
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371 AssertClass(Class cls) {
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372 this.cls = cls;
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373 }
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374
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375 public Object assertClass(LuanState luan,Object v) throws LuanException {
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376 if( !cls.isInstance(v) ) {
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377 String got = v.getClass().getSimpleName();
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diff changeset
378 String expected = cls.getSimpleName();
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379 throw luan.JAVA.exception("bad argument #1 ("+expected+" expected, got "+got+")");
64
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380 }
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381 return v;
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382 }
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383 }
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diff changeset
384 private static final Method assertClass;
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385 static {
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386 try {
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387 assertClass = AssertClass.class.getMethod("assertClass",LuanState.class,Object.class);
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388 assertClass.setAccessible(true);
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389 } catch(NoSuchMethodException e) {
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390 throw new RuntimeException(e);
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391 }
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392 }
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393
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diff changeset
394
62
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diff changeset
395 public static Object proxy(final LuanState luan,Static st,final LuanTable t,final Object base) throws LuanException {
61
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diff changeset
396 return Proxy.newProxyInstance(
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diff changeset
397 st.cls.getClassLoader(),
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diff changeset
398 new Class[]{st.cls},
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diff changeset
399 new InvocationHandler() {
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diff changeset
400 public Object invoke(Object proxy,Method method, Object[] args)
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diff changeset
401 throws Throwable
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diff changeset
402 {
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diff changeset
403 if( args==null )
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diff changeset
404 args = new Object[0];
61
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diff changeset
405 String name = method.getName();
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406 Object fnObj = t.get(name);
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diff changeset
407 if( fnObj==null && base!=null )
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diff changeset
408 return method.invoke(base,args);
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diff changeset
409 LuanFunction fn = luan.JAVA.checkFunction(fnObj);
6ca02b188dba add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 86
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410 return Luan.first(luan.JAVA.call(fn,name,args));
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183d470be7e8 add java.proxy
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 60
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411 }
183d470be7e8 add java.proxy
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 60
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412 }
183d470be7e8 add java.proxy
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 60
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413 );
183d470be7e8 add java.proxy
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 60
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414 }
37
8a57ebfdfd78 add JavaLib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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415 }