Mercurial Hosting > luan

annotate src/luan/interp/Closure.java @ 78:7c08b611125d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
better deep cloning git-svn-id: https://luan-java.googlecode.com/svn/trunk@79 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 15 Feb 2013 22:29:16 +0000
parents 4bf3d0c0b6b9
children 6db8f286fa6c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
31
5cf15507d77e separate interpreter from interface
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 24
diff changeset
1 package luan.interp;
21
c93d8c781853 add functions
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: 40
diff changeset
3 import luan.LuanFunction;
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
4 import luan.LuanState;
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
5 import luan.LuanElement;
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
6 import luan.LuanException;
77
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
7 import luan.DeepCloner;
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
8 import luan.DeepCloneable;
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
9
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
10
77
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
11 final class Closure extends LuanFunction implements DeepCloneable<Closure> {
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
12 private final Chunk chunk;
78
7c08b611125d better deep cloning
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 77
diff changeset
13 private UpValue[] upValues;
32
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
14 private final static UpValue[] NO_UP_VALUES = new UpValue[0];
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
15
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
16 Closure(LuanStateImpl luan,Chunk chunk) {
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
17 this.chunk = chunk;
32
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
18 UpValue.Getter[] upValueGetters = chunk.upValueGetters;
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
19 if( upValueGetters.length==0 ) {
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
20 upValues = NO_UP_VALUES;
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
21 } else {
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
22 upValues = new UpValue[upValueGetters.length];
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
23 for( int i=0; i<upValues.length; i++ ) {
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
24 upValues[i] = upValueGetters[i].get(luan);
32
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
25 }
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
26 }
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
27 }
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
28
77
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
29 private Closure(Closure c) {
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
30 this.chunk = c.chunk;
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
31 }
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
32
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
33 @Override public Closure shallowClone() {
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
34 return new Closure(this);
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
35 }
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
36
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
37 @Override public void deepenClone(Closure clone,DeepCloner cloner) {
78
7c08b611125d better deep cloning
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 77
diff changeset
38 clone.upValues = cloner.deepClone(upValues);
7c08b611125d better deep cloning
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 77
diff changeset
39 }
7c08b611125d better deep cloning
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 77
diff changeset
40
7c08b611125d better deep cloning
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 77
diff changeset
41 UpValue[] upValues() {
7c08b611125d better deep cloning
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 77
diff changeset
42 return upValues;
77
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
43 }
4bf3d0c0b6b9 make LuanState cloneable
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 49
diff changeset
44
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
45 public Object[] call(LuanState luan,Object[] args) throws LuanException {
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
46 return call(this,(LuanStateImpl)luan,args);
32
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
47 }
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
48
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
49 private static Object[] call(Closure closure,LuanStateImpl luan,Object[] args) throws LuanException {
22
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
50 while(true) {
32
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
51 Chunk chunk = closure.chunk;
24
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
52 Object[] varArgs = null;
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
53 if( chunk.isVarArg ) {
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
54 if( args.length > chunk.numArgs ) {
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
55 varArgs = new Object[ args.length - chunk.numArgs ];
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
56 for( int i=0; i<varArgs.length; i++ ) {
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
57 varArgs[i] = args[chunk.numArgs+i];
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
58 }
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
59 } else {
48
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
60 varArgs = LuanFunction.EMPTY_RTN;
24
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
61 }
7ee247560db5 add VarArgs
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 22
diff changeset
62 }
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
63 Object[] stack = luan.newFrame(closure,chunk.stackSize,varArgs);
22
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
64 final int n = Math.min(args.length,chunk.numArgs);
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
65 for( int i=0; i<n; i++ ) {
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
66 stack[i] = args[i];
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
67 }
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
68 Object[] returnValues;
48
64ecb7a3aad7 rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
diff changeset
69 Closure tailFn;
22
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
70 try {
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
71 chunk.block.eval(luan);
22
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
72 } catch(ReturnException e) {
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
73 } finally {
49
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
74 returnValues = luan.returnValues;
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
75 closure = luan.tailFn;
8ede219cd111 add WebShell
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 48
diff changeset
76 luan.popFrame();
22
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
77 }
32
c3eab5a3ce3c implement closures
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 31
diff changeset
78 if( closure == null )
22
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
79 return returnValues;
1e37f22a34c8 proper tail calls
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 21
diff changeset
80 args = returnValues;
21
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
81 }
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
82 }
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
83
c93d8c781853 add functions
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff changeset
84 }