Mercurial Hosting > luan
annotate src/luan/interp/UnmExpr.java @ 112:f5af13062b10
fix previous rev
git-svn-id: https://luan-java.googlecode.com/svn/trunk@113 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
---|---|
date | Fri, 23 May 2014 22:52:39 +0000 |
parents | 6ca02b188dba |
children |
rev | line source |
---|---|
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
1 package luan.interp; |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
2 |
48
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
46
diff
changeset
|
3 import luan.Luan; |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
46
diff
changeset
|
4 import luan.LuanFunction; |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
46
diff
changeset
|
5 import luan.LuanException; |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
46
diff
changeset
|
6 import luan.LuanSource; |
88
6ca02b188dba
add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
49
diff
changeset
|
7 import luan.LuanBit; |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
8 |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
9 |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
10 // unary minus |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
11 final class UnmExpr extends UnaryOpExpr { |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
12 |
48
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
46
diff
changeset
|
13 UnmExpr(LuanSource.Element se,Expr op) { |
40
e3624b7cd603
implement stack trace
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
37
diff
changeset
|
14 super(se,op); |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
15 } |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
16 |
49
8ede219cd111
add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
48
diff
changeset
|
17 @Override public Object eval(LuanStateImpl luan) throws LuanException { |
8ede219cd111
add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
48
diff
changeset
|
18 Object o = op.eval(luan); |
48
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
46
diff
changeset
|
19 Number n = Luan.toNumber(o); |
35
e51906de0f11
implement metatables
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
31
diff
changeset
|
20 if( n != null ) |
46
a443637829c1
remove LuaNumber
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
44
diff
changeset
|
21 return -n.doubleValue(); |
88
6ca02b188dba
add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
49
diff
changeset
|
22 LuanBit bit = luan.bit(se); |
6ca02b188dba
add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
49
diff
changeset
|
23 LuanFunction fn = bit.getHandlerFunction("__unm",o); |
40
e3624b7cd603
implement stack trace
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
37
diff
changeset
|
24 if( fn != null ) { |
112
f5af13062b10
fix previous rev
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
88
diff
changeset
|
25 return Luan.first(bit.call(fn,"__unm",new Object[]{o})); |
40
e3624b7cd603
implement stack trace
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
37
diff
changeset
|
26 } |
88
6ca02b188dba
add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
49
diff
changeset
|
27 throw bit.exception("attempt to perform arithmetic on a "+Luan.type(o)+" value"); |
7
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
28 } |
bca8fc5d928b
work on expressions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
|
29 } |