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comparison core/src/luan/impl/$Luan.java @ 649:37f0cf43f191

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UnaryExpr now compiled
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 30 Mar 2016 22:42:27 -0600
parents e387e4021afe
children d658eab7bf4c
comparison
equal deleted inserted replaced
648:e387e4021afe 649:37f0cf43f191
1 package luan.impl; 1 package luan.impl;
2 2
3 import java.util.List; 3 import java.util.List;
4 import java.util.ArrayList; 4 import java.util.ArrayList;
5 import luan.Luan; 5 import luan.Luan;
6 import luan.LuanState;
6 import luan.LuanTable; 7 import luan.LuanTable;
8 import luan.LuanFunction;
7 import luan.LuanException; 9 import luan.LuanException;
8 10
9 11
10 public final class $Luan { 12 public final class $Luan {
11 private $Luan() {} // never 13 private $Luan() {} // never
26 28
27 public static Object first(Object obj) { 29 public static Object first(Object obj) {
28 return Luan.first(obj); 30 return Luan.first(obj);
29 } 31 }
30 32
31 public static int len(LuanStateImpl luan,Object o) throws LuanException { 33 public static int len(LuanState luan,Object o) throws LuanException {
32 if( o instanceof String ) { 34 if( o instanceof String ) {
33 String s = (String)o; 35 String s = (String)o;
34 return s.length(); 36 return s.length();
35 } 37 }
36 if( o instanceof byte[] ) { 38 if( o instanceof byte[] ) {
41 LuanTable t = (LuanTable)o; 43 LuanTable t = (LuanTable)o;
42 return t.length(luan); 44 return t.length(luan);
43 } 45 }
44 throw new LuanException( "attempt to get length of a " + Luan.type(o) + " value" ); 46 throw new LuanException( "attempt to get length of a " + Luan.type(o) + " value" );
45 } 47 }
48
49 public static Object unm(LuanState luan,Object o) throws LuanException {
50 if( o instanceof Number )
51 return -((Number)o).doubleValue();
52 if( o instanceof LuanTable ) {
53 LuanFunction fn = Luan.getHandlerFunction("__unm",(LuanTable)o);
54 if( fn != null ) {
55 return Luan.first(fn.call(luan,new Object[]{o}));
56 }
57 }
58 throw new LuanException("attempt to perform arithmetic on a "+Luan.type(o)+" value");
59 }
60
61 public static Boolean not(Object o) throws LuanException {
62 return !Luan.checkBoolean(o);
63 }
64
46 } 65 }