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comparison src/luan/interp/EqExpr.java @ 49:8ede219cd111

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add WebShell git-svn-id: https://luan-java.googlecode.com/svn/trunk@50 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 28 Dec 2012 19:35:04 +0000
parents 64ecb7a3aad7
children 9381b23ea9e1
comparison
equal deleted inserted replaced
48:64ecb7a3aad7 49:8ede219cd111
11 11
12 EqExpr(LuanSource.Element se,Expr op1,Expr op2) { 12 EqExpr(LuanSource.Element se,Expr op1,Expr op2) {
13 super(se,op1,op2); 13 super(se,op1,op2);
14 } 14 }
15 15
16 @Override public Object eval(LuanStateImpl lua) throws LuanException { 16 @Override public Object eval(LuanStateImpl luan) throws LuanException {
17 Object o1 = op1.eval(lua); 17 Object o1 = op1.eval(luan);
18 Object o2 = op2.eval(lua); 18 Object o2 = op2.eval(luan);
19 if( o1 == o2 || o1 != null && o1.equals(o2) ) 19 if( o1 == o2 || o1 != null && o1.equals(o2) )
20 return true; 20 return true;
21 if( o1 instanceof Number && o2 instanceof Number ) { 21 if( o1 instanceof Number && o2 instanceof Number ) {
22 Number n1 = (Number)o1; 22 Number n1 = (Number)o1;
23 Number n2 = (Number)o2; 23 Number n2 = (Number)o2;
24 return n1.doubleValue() == n2.doubleValue(); 24 return n1.doubleValue() == n2.doubleValue();
25 } 25 }
26 if( !o1.getClass().equals(o2.getClass()) ) 26 if( !o1.getClass().equals(o2.getClass()) )
27 return false; 27 return false;
28 LuanTable mt1 = lua.getMetatable(o1); 28 LuanTable mt1 = luan.getMetatable(o1);
29 LuanTable mt2 = lua.getMetatable(o2); 29 LuanTable mt2 = luan.getMetatable(o2);
30 if( mt1==null || mt2==null ) 30 if( mt1==null || mt2==null )
31 return false; 31 return false;
32 Object f = mt1.get("__eq"); 32 Object f = mt1.get("__eq");
33 if( f == null || !f.equals(mt2.get("__eq")) ) 33 if( f == null || !f.equals(mt2.get("__eq")) )
34 return null; 34 return null;
35 LuanFunction fn = lua.checkFunction(se,f); 35 LuanFunction fn = luan.checkFunction(se,f);
36 return Luan.toBoolean( Luan.first(lua.call(fn,se,"__eq",o1,o2)) ); 36 return Luan.toBoolean( Luan.first(luan.call(fn,se,"__eq",o1,o2)) );
37 } 37 }
38 } 38 }