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comparison graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/core/ArrayIndexNode.java @ 13529:856c2c294f84

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Merge.
author Christian Humer <christian.humer@gmail.com>
date Tue, 07 Jan 2014 18:53:04 +0100
parents 0fbee3eb71f0
children
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13528:5a0c694ef735 13529:856c2c294f84
1 /*
2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
4 * redistribute it and/or modify it under the terms of the:
5 *
6 * Eclipse Public License version 1.0
7 * GNU General Public License version 2
8 * GNU Lesser General Public License version 2.1
9 */
10 package com.oracle.truffle.ruby.nodes.core;
11
12 import com.oracle.truffle.api.*;
13 import com.oracle.truffle.api.dsl.*;
14 import com.oracle.truffle.api.nodes.*;
15 import com.oracle.truffle.ruby.nodes.*;
16 import com.oracle.truffle.ruby.runtime.*;
17 import com.oracle.truffle.ruby.runtime.core.array.*;
18
19 /**
20 * Index an array, without using any method lookup. This isn't a call - it's an operation on a core
21 * class.
22 */
23 @NodeInfo(shortName = "array-index")
24 @NodeChildren({@NodeChild(value = "array", type = RubyNode.class)})
25 public abstract class ArrayIndexNode extends RubyNode {
26
27 final int index;
28
29 public ArrayIndexNode(RubyContext context, SourceSection sourceSection, int index) {
30 super(context, sourceSection);
31 this.index = index;
32 }
33
34 public ArrayIndexNode(ArrayIndexNode prev) {
35 super(prev);
36 index = prev.index;
37 }
38
39 @Specialization(guards = "isEmptyStore", order = 1)
40 public NilPlaceholder indexEmpty(@SuppressWarnings("unused") RubyArray array) {
41 return NilPlaceholder.INSTANCE;
42 }
43
44 @Specialization(guards = "isFixnumStore", rewriteOn = UnexpectedResultException.class, order = 2)
45 public int indexFixnum(RubyArray array) throws UnexpectedResultException {
46 final FixnumArrayStore store = (FixnumArrayStore) array.getArrayStore();
47 return store.getFixnum(ArrayUtilities.normaliseIndex(store.size(), index));
48 }
49
50 @Specialization(guards = "isFixnumStore", order = 3)
51 public Object indexMaybeFixnum(RubyArray array) {
52 final FixnumArrayStore store = (FixnumArrayStore) array.getArrayStore();
53
54 try {
55 return store.getFixnum(ArrayUtilities.normaliseIndex(store.size(), index));
56 } catch (UnexpectedResultException e) {
57 return e.getResult();
58 }
59 }
60
61 @Specialization(guards = "isFixnumImmutablePairStore", rewriteOn = UnexpectedResultException.class, order = 4)
62 public int indexFixnumImmutablePair(RubyArray array) throws UnexpectedResultException {
63 final FixnumImmutablePairArrayStore store = (FixnumImmutablePairArrayStore) array.getArrayStore();
64 return store.getFixnum(ArrayUtilities.normaliseIndex(store.size(), index));
65 }
66
67 @Specialization(guards = "isFixnumImmutablePairStore", order = 5)
68 public Object indexMaybeFixnumImmutablePair(RubyArray array) {
69 final FixnumImmutablePairArrayStore store = (FixnumImmutablePairArrayStore) array.getArrayStore();
70
71 try {
72 return store.getFixnum(ArrayUtilities.normaliseIndex(store.size(), index));
73 } catch (UnexpectedResultException e) {
74 return e.getResult();
75 }
76 }
77
78 @Specialization(guards = "isObjectStore", order = 6)
79 public Object indexObject(RubyArray array) {
80 final ObjectArrayStore store = (ObjectArrayStore) array.getArrayStore();
81 return store.get(ArrayUtilities.normaliseIndex(store.size(), index));
82 }
83
84 @Specialization(guards = "isObjectImmutablePairStore", order = 7)
85 public Object indexObjectImmutablePair(RubyArray array) {
86 final ObjectImmutablePairArrayStore store = (ObjectImmutablePairArrayStore) array.getArrayStore();
87 return store.get(ArrayUtilities.normaliseIndex(store.size(), index));
88 }
89
90 protected boolean isEmptyStore(RubyArray receiver) {
91 return receiver.getArrayStore() instanceof EmptyArrayStore;
92 }
93
94 protected boolean isFixnumStore(RubyArray receiver) {
95 return receiver.getArrayStore() instanceof FixnumArrayStore;
96 }
97
98 protected boolean isFixnumImmutablePairStore(RubyArray receiver) {
99 return receiver.getArrayStore() instanceof FixnumImmutablePairArrayStore;
100 }
101
102 protected boolean isObjectStore(RubyArray receiver) {
103 return receiver.getArrayStore() instanceof ObjectArrayStore;
104 }
105
106 protected boolean isObjectImmutablePairStore(RubyArray receiver) {
107 return receiver.getArrayStore() instanceof ObjectImmutablePairArrayStore;
108 }
109
110 }