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comparison src/luan/Lua.java @ 3:7a2cdbc5767f

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add LuaState git-svn-id: https://luan-java.googlecode.com/svn/trunk@4 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 16 Nov 2012 05:23:12 +0000
parents 4da26b11d12a
children bca8fc5d928b
comparison
equal deleted inserted replaced
2:4da26b11d12a 3:7a2cdbc5767f
19 if( obj == null ) 19 if( obj == null )
20 return "nil"; 20 return "nil";
21 return obj.toString(); 21 return obj.toString();
22 } 22 }
23 23
24 public static LuaNumber toNumber(Object obj) throws LuaException { 24 public static String checkString(Object obj) {
25 return toString(obj);
26 }
27
28 public static LuaNumber toNumber(Object obj) {
25 if( obj instanceof LuaNumber ) 29 if( obj instanceof LuaNumber )
26 return (LuaNumber)obj; 30 return (LuaNumber)obj;
27 if( obj instanceof String ) { 31 if( obj instanceof String ) {
28 String s = (String)obj; 32 String s = (String)obj;
29 try { 33 try {
30 return new LuaNumber( Double.parseDouble(s) ); 34 return new LuaNumber( Double.parseDouble(s) );
31 } catch(NumberFormatException e) {} 35 } catch(NumberFormatException e) {}
32 } 36 }
33 throw new LuaException( "attempt to perform arithmetic on a " + type(obj) + " value" ); 37 return null;
34 } 38 }
35 39
36 public static LuaFunction toFunction(Object obj) throws LuaException { 40 public static LuaNumber checkNumber(Object obj) throws LuaException {
41 LuaNumber n = toNumber(obj);
42 if( n == null )
43 throw new LuaException( "attempt to perform arithmetic on a " + type(obj) + " value" );
44 return n;
45 }
46
47 public static LuaFunction checkFunction(Object obj) throws LuaException {
37 if( obj instanceof LuaFunction ) 48 if( obj instanceof LuaFunction )
38 return (LuaFunction)obj; 49 return (LuaFunction)obj;
39 throw new LuaException( "attempt to call a " + type(obj) + " value" ); 50 throw new LuaException( "attempt to call a " + type(obj) + " value" );
40 } 51 }
41 52