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Java > Open Source Codes > org > jruby > ast > executable > YARVMachineTest


1 package org.jruby.ast.executable;
2
3 import org.jruby.Ruby;
4 import org.jruby.ast.executable.YARVMachine.Instruction;
5 import org.jruby.parser.LocalStaticScope;
6 import org.jruby.parser.StaticScope;
7 import org.jruby.runtime.ThreadContext;
8 import org.jruby.runtime.builtin.IRubyObject;
9
10 import junit.framework.TestCase;
11
12 public class YARVMachineTest extends TestCase {
13     public static Instruction[] getSimpleTest(Ruby runtime) {
14         return new Instruction[] {
15             new Instruction(YARVInstructions.PUTSTRING, "Hello, YARV!"),
16             new Instruction(YARVInstructions.DUP),
17             new Instruction(YARVInstructions.SETLOCAL, 0),
18             new Instruction(YARVInstructions.GETLOCAL, 0),
19             new Instruction(YARVInstructions.POP),
20             new Instruction(YARVInstructions.SETLOCAL, 1),
21             new Instruction(YARVInstructions.PUTOBJECT, runtime.getTrue()),
22             new Instruction(YARVInstructions.BRANCHIF, 10),
23             new Instruction(YARVInstructions.PUTSTRING, "Wrong String"),
24             new Instruction(YARVInstructions.JUMP, 11),
25             new Instruction(YARVInstructions.GETLOCAL, 1),
26             new Instruction(YARVInstructions.PUTOBJECT, runtime.newFixnum(2)),
27             new Instruction(YARVInstructions.SEND, "*", 1, null, 0),
28             new Instruction(YARVInstructions.SEND, "to_s", 0, null, YARVInstructions.VCALL_FLAG | YARVInstructions.FCALL_FLAG),
29             new Instruction(YARVInstructions.SEND, "+", 1, null, 0)
30         };
31     };
32     
33     public static Instruction[] getFib(Ruby runtime, int n){
34         return new Instruction[] {
35             // local var n declared (argument)
36 new Instruction(YARVInstructions.PUTOBJECT, runtime.newFixnum(n)), // fib index
37 new Instruction(YARVInstructions.SETLOCAL, 0),
38             // method begins here
39 // local var i declared
40 new Instruction(YARVInstructions.PUTOBJECT, runtime.newFixnum(0)),
41             new Instruction(YARVInstructions.SETLOCAL, 1),
42             // local var j declared
43 new Instruction(YARVInstructions.PUTOBJECT, runtime.newFixnum(1)),
44             new Instruction(YARVInstructions.SETLOCAL, 2),
45             // local var cur declared
46 new Instruction(YARVInstructions.PUTOBJECT, runtime.newFixnum(1)),
47             new Instruction(YARVInstructions.SETLOCAL, 3),
48             // while begins here, instruction 8
49 new Instruction(YARVInstructions.GETLOCAL, 3),
50             new Instruction(YARVInstructions.GETLOCAL, 0),
51             new Instruction(YARVInstructions.SEND, "<=", 1, null, 0),
52             new Instruction(YARVInstructions.BRANCHUNLESS, 25),
53             // local var k declared, k = i
54 new Instruction(YARVInstructions.GETLOCAL, 1),
55             new Instruction(YARVInstructions.SETLOCAL, 4),
56             // i = j
57 new Instruction(YARVInstructions.GETLOCAL, 2),
58             new Instruction(YARVInstructions.SETLOCAL, 1),
59             // j = k + j
60 new Instruction(YARVInstructions.GETLOCAL, 4),
61             new Instruction(YARVInstructions.GETLOCAL, 2),
62             new Instruction(YARVInstructions.SEND, "+", 1, null, 0),
63             new Instruction(YARVInstructions.SETLOCAL, 2),
64             // cur = cur + 1
65 new Instruction(YARVInstructions.GETLOCAL, 3),
66             new Instruction(YARVInstructions.PUTOBJECT, runtime.newFixnum(1)),
67             new Instruction(YARVInstructions.SEND, "+", 1, null, 0),
68             new Instruction(YARVInstructions.SETLOCAL, 3),
69             // end while
70 new Instruction(YARVInstructions.JUMP, 8),
71             // return i, instruction 25
72 new Instruction(YARVInstructions.GETLOCAL, 1)
73         };
74     };
75
76     public void testSimpleExecution() {
77         YARVMachine ym = new YARVMachine();
78         
79         Ruby runtime = Ruby.newInstance(System.in, System.out, System.err);
80         ThreadContext context = runtime.getCurrentContext();
81         
82         StaticScope scope = new LocalStaticScope(null);
83         scope.setVariables(new String JavaDoc[] { "zero", "one" });
84         assertEquals("Hello, YARV!Hello, YARV!Object", ym.exec(context, runtime.getObject(), scope, getSimpleTest(runtime)).toString());
85     }
86     
87     public void testIterativeFib() {
88         YARVMachine ym = new YARVMachine();
89         
90         Ruby runtime = Ruby.newInstance(System.in, System.out, System.err);
91         ThreadContext context = runtime.getCurrentContext();
92         
93         StaticScope scope = new LocalStaticScope(null);
94         scope.setVariables(new String JavaDoc[] {"n", "i", "j", "cur", "k"});
95         
96         assertEquals("55", ym.exec(context, runtime.getObject(), scope, getFib(runtime,10)).toString());
97         
98         IRubyObject fib5k = ym.exec(context, runtime.getObject(), scope, getFib(runtime,5000));
99         assertEquals("38789684543883256337019163083259053120821277146462451061605972148955501390440370" +
100                 "9701082291646221066947929345285888297381348310200895498294036143015691147893836421656" +
101                 "3944106910214505634133706558656238254656700712525929903854933813928836378347518908762" +
102                 "9707120333370529231076930085180938498018038478139967488817655546537882916442689129803" +
103                 "8461377896902150229308247566634622492307188332480328037503913035290330450584270114763" +
104                 "5242270210934637699104006714174883298422891491273104054328753298044273676822977244987" +
105                 "7498745556919077038806370468327948113589737399931101062193081490185708153978543791953" +
106                 "0561751076105307568878376603366735544525884488624161921055345749367589784902798823435" +
107                 "1023599844663934853256411952221859563060475364645470760330902420806382584929156452876" +
108                 "2915757591423438091423029174910889841552098544324865940797935713168416928680395453095" +
109                 "4538869811466508206686289742063932343848846524098874239587380197699382031717420893226" +
110                 "5468879364002630797780058759129671389634214252579116872755600360311370547754724604639" +
111                 "987588046985178408674382863125", fib5k.toString());
112     }
113     
114     public static void main(String JavaDoc[] args) {
115         new YARVMachineTest().testIterativeFib();
116     }
117 }
118
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