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comparison src/luan/LuanState.java @ 1166:7ef40e1923b7

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add back Thread.global allow metatables to have metatables
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 08 Feb 2018 02:22:51 -0700
parents ba4daf107e07
children d3a3ca116e42
comparison
equal deleted inserted replaced
1165:668f29bc52ea 1166:7ef40e1923b7
94 if( obj instanceof Number ) 94 if( obj instanceof Number )
95 return (Number)obj; 95 return (Number)obj;
96 throw new LuanException( "attempt to perform arithmetic on '"+context()+"' (a " + Luan.type(obj) + " value)" ); 96 throw new LuanException( "attempt to perform arithmetic on '"+context()+"' (a " + Luan.type(obj) + " value)" );
97 } 97 }
98 */ 98 */
99
100
101 public boolean isLessThan(Object o1,Object o2) throws LuanException {
102 if( o1 instanceof Number && o2 instanceof Number ) {
103 Number n1 = (Number)o1;
104 Number n2 = (Number)o2;
105 return n1.doubleValue() < n2.doubleValue();
106 }
107 if( o1 instanceof String && o2 instanceof String ) {
108 String s1 = (String)o1;
109 String s2 = (String)o2;
110 return s1.compareTo(s2) < 0;
111 }
112 LuanFunction fn = getBinHandler("__lt",o1,o2);
113 if( fn != null )
114 return Luan.checkBoolean( Luan.first(fn.call(this,new Object[]{o1,o2})) );
115 throw new LuanException( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) );
116 }
117
118 public LuanFunction getBinHandler(String op,Object o1,Object o2) throws LuanException {
119 if( o1 instanceof LuanTable ) {
120 LuanFunction f1 = getHandlerFunction(op,(LuanTable)o1);
121 if( f1 != null )
122 return f1;
123 }
124 return o2 instanceof LuanTable ? getHandlerFunction(op,(LuanTable)o2) : null;
125 }
126
127 public LuanFunction getHandlerFunction(String op,LuanTable t) throws LuanException {
128 Object f = t.getHandler(this,op);
129 if( f == null )
130 return null;
131 return Luan.checkFunction(f);
132 }
99 } 133 }