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comparison core/src/luan/modules/JavaLuan.java @ 509:e3b0846dc2ef

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throw exception for invalid indexes of string, binary, or java
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 22 May 2015 02:02:49 -0600
parents 92c3d22745b8
children 2da0bcb979b5
comparison
equal deleted inserted replaced
508:9218f9cf45d3 509:e3b0846dc2ef
21 import luan.LuanTable; 21 import luan.LuanTable;
22 import luan.LuanException; 22 import luan.LuanException;
23 import luan.LuanFunction; 23 import luan.LuanFunction;
24 import luan.LuanJavaFunction; 24 import luan.LuanJavaFunction;
25 import luan.LuanElement; 25 import luan.LuanElement;
26 import luan.LuanBit;
26 27
27 28
28 public final class JavaLuan { 29 public final class JavaLuan {
29 30
30 public static void java(LuanState luan) throws LuanException { 31 public static void java(LuanState luan) throws LuanException {
42 } 43 }
43 44
44 private static void checkJava(LuanState luan) throws LuanException { 45 private static void checkJava(LuanState luan) throws LuanException {
45 if( !luan.hasJava() ) 46 if( !luan.hasJava() )
46 throw luan.exception("Java isn't allowed"); 47 throw luan.exception("Java isn't allowed");
48 }
49
50 static final Object FAIL = new Object();
51
52 public static Object __index(LuanBit bit,Object obj,Object key) throws LuanException {
53 LuanState luan = bit.luan;
54 Object rtn = __index(luan,obj,key);
55 if( rtn != FAIL )
56 return rtn;
57 if( bit.el != null )
58 throw bit.exception( "invalid index ["+luan.toString(key)+"] for ("+bit.el.text()+") java: "+obj.getClass() );
59 else
60 throw bit.exception( "invalid index ["+luan.toString(key)+"] for java: "+obj.getClass() );
47 } 61 }
48 62
49 public static Object __index(LuanState luan,Object obj,Object key) throws LuanException { 63 public static Object __index(LuanState luan,Object obj,Object key) throws LuanException {
50 checkJava(luan); 64 checkJava(luan);
51 if( obj instanceof Static ) { 65 if( obj instanceof Static ) {
79 if( !members.isEmpty() ) { 93 if( !members.isEmpty() ) {
80 return member(null,members); 94 return member(null,members);
81 } 95 }
82 } 96 }
83 } 97 }
84 throw luan.exception("invalid member '"+key+"' for: "+obj); 98 } else {
85 } 99 Class cls = obj.getClass();
86 Class cls = obj.getClass(); 100 if( cls.isArray() ) {
87 if( cls.isArray() ) { 101 if( "length".equals(key) ) {
88 if( "length".equals(key) ) { 102 return Array.getLength(obj);
89 return Array.getLength(obj); 103 }
90 } 104 Integer i = Luan.asInteger(key);
91 Integer i = Luan.asInteger(key); 105 if( i != null ) {
92 if( i != null ) { 106 return Array.get(obj,i);
93 return Array.get(obj,i); 107 }
94 } 108 throw luan.exception("invalid member '"+key+"' for java array: "+obj);
95 throw luan.exception("invalid member '"+key+"' for java array: "+obj); 109 }
96 } 110 if( key instanceof String ) {
97 if( key instanceof String ) { 111 String name = (String)key;
98 String name = (String)key; 112 if( "instanceof".equals(name) ) {
99 if( "instanceof".equals(name) ) { 113 return new LuanJavaFunction(instanceOf,new InstanceOf(obj));
100 return new LuanJavaFunction(instanceOf,new InstanceOf(obj)); 114 } else {
101 } else { 115 List<Member> members = getMembers(cls,name);
102 List<Member> members = getMembers(cls,name); 116 if( !members.isEmpty() ) {
103 if( !members.isEmpty() ) { 117 return member(obj,members);
104 return member(obj,members); 118 }
105 } 119 }
106 } 120 }
107 } 121 }
108 // throw luan.exception("invalid member '"+key+"' for java object: "+obj);
109 //System.out.println("invalid member '"+key+"' for java object: "+obj); 122 //System.out.println("invalid member '"+key+"' for java object: "+obj);
110 return null; 123 return FAIL;
111 } 124 }
112 125
113 private static Object member(Object obj,List<Member> members) throws LuanException { 126 private static Object member(Object obj,List<Member> members) throws LuanException {
114 try { 127 try {
115 if( members.size()==1 ) { 128 if( members.size()==1 ) {