Mercurial Hosting > luan

comparison src/luan/Lua.java @ 36:2a35154aec14

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
implement more basic lib functions git-svn-id: https://luan-java.googlecode.com/svn/trunk@37 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 18 Dec 2012 09:53:42 +0000
parents e51906de0f11
children 8a57ebfdfd78
comparison
equal deleted inserted replaced
35:e51906de0f11 36:2a35154aec14
18 18
19 public static boolean toBoolean(Object obj) { 19 public static boolean toBoolean(Object obj) {
20 return obj != null && !Boolean.FALSE.equals(obj); 20 return obj != null && !Boolean.FALSE.equals(obj);
21 } 21 }
22 22
23 public static String toString(Object obj) {
24 if( obj == null )
25 return "nil";
26 return obj.toString();
27 }
28
29 public static String asString(Object obj) { 23 public static String asString(Object obj) {
30 if( obj instanceof String || obj instanceof LuaNumber ) 24 if( obj instanceof String || obj instanceof LuaNumber )
31 return obj.toString(); 25 return obj.toString();
32 return null; 26 return null;
33 } 27 }
38 throw new LuaException( "attempt to use a " + Lua.type(obj) + " as a string" ); 32 throw new LuaException( "attempt to use a " + Lua.type(obj) + " as a string" );
39 return s; 33 return s;
40 } 34 }
41 35
42 public static LuaNumber toNumber(Object obj) { 36 public static LuaNumber toNumber(Object obj) {
37 return toNumber(obj,null);
38 }
39
40 public static LuaNumber toNumber(Object obj,Integer base) {
43 if( obj instanceof LuaNumber ) 41 if( obj instanceof LuaNumber )
44 return (LuaNumber)obj; 42 return (LuaNumber)obj;
45 if( obj instanceof String ) { 43 if( obj instanceof String ) {
46 String s = (String)obj; 44 String s = (String)obj;
47 try { 45 try {
48 return new LuaNumber( Double.parseDouble(s) ); 46 if( base==null )
47 return new LuaNumber( Double.parseDouble(s) );
48 else
49 return new LuaNumber( Long.parseLong(s,base) );
49 } catch(NumberFormatException e) {} 50 } catch(NumberFormatException e) {}
50 } 51 }
51 return null; 52 return null;
52 } 53 }
53 54