Mercurial Hosting > luan

comparison src/luan/interp/ConcatExpr.java @ 48:64ecb7a3aad7

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
rename Lua to Luan git-svn-id: https://luan-java.googlecode.com/svn/trunk@49 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 28 Dec 2012 03:29:12 +0000
parents e3624b7cd603
children 8ede219cd111
comparison
equal deleted inserted replaced
47:659c7139e903 48:64ecb7a3aad7
1 package luan.interp; 1 package luan.interp;
2 2
3 import luan.Lua; 3 import luan.Luan;
4 import luan.LuaFunction; 4 import luan.LuanFunction;
5 import luan.LuaException; 5 import luan.LuanException;
6 import luan.LuaSource; 6 import luan.LuanSource;
7 7
8 8
9 final class ConcatExpr extends BinaryOpExpr { 9 final class ConcatExpr extends BinaryOpExpr {
10 10
11 ConcatExpr(LuaSource.Element se,Expr op1,Expr op2) { 11 ConcatExpr(LuanSource.Element se,Expr op1,Expr op2) {
12 super(se,op1,op2); 12 super(se,op1,op2);
13 } 13 }
14 14
15 @Override public Object eval(LuaStateImpl lua) throws LuaException { 15 @Override public Object eval(LuanStateImpl lua) throws LuanException {
16 Object o1 = op1.eval(lua); 16 Object o1 = op1.eval(lua);
17 Object o2 = op2.eval(lua); 17 Object o2 = op2.eval(lua);
18 String s1 = Lua.asString(o1); 18 String s1 = Luan.asString(o1);
19 String s2 = Lua.asString(o2); 19 String s2 = Luan.asString(o2);
20 if( s1 != null && s2 != null ) 20 if( s1 != null && s2 != null )
21 return s1 + s2; 21 return s1 + s2;
22 LuaFunction fn = lua.getBinHandler(se,"__concat",o1,o2); 22 LuanFunction fn = lua.getBinHandler(se,"__concat",o1,o2);
23 if( fn != null ) 23 if( fn != null )
24 return Lua.first(lua.call(fn,se,"__concat",o1,o2)); 24 return Luan.first(lua.call(fn,se,"__concat",o1,o2));
25 String type = s1==null ? Lua.type(o1) : Lua.type(o2); 25 String type = s1==null ? Luan.type(o1) : Luan.type(o2);
26 throw new LuaException( lua, se, "attempt to concatenate a " + type + " value" ); 26 throw new LuanException( lua, se, "attempt to concatenate a " + type + " value" );
27 } 27 }
28 } 28 }