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comparison graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/node/SpecializationData.java @ 10597:79041ab43660

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Truffle-DSL: API-change: Renamed truffle.api.codegen to truffle.api.dsl for all projects and packages.
author Christian Humer <christian.humer@gmail.com>
date Mon, 01 Jul 2013 20:58:32 +0200
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children b8fe1fe004ec
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10596:f43eb2f1bbbc 10597:79041ab43660
1 /*
2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.truffle.dsl.processor.node;
24
25 import java.util.*;
26
27 import javax.lang.model.type.*;
28
29 import com.oracle.truffle.api.dsl.*;
30 import com.oracle.truffle.dsl.processor.*;
31 import com.oracle.truffle.dsl.processor.template.*;
32 import com.oracle.truffle.dsl.processor.typesystem.*;
33
34 public class SpecializationData extends TemplateMethod {
35
36 private final int order;
37 private final boolean generic;
38 private final boolean polymorphic;
39 private final boolean uninitialized;
40 private final List<SpecializationThrowsData> exceptions;
41 private List<String> guardDefinitions = Collections.emptyList();
42 private List<GuardData> guards = Collections.emptyList();
43 private List<ShortCircuitData> shortCircuits;
44 private List<String> assumptions = Collections.emptyList();
45 private NodeData node;
46 private boolean reachable;
47
48 public SpecializationData(TemplateMethod template, int order, List<SpecializationThrowsData> exceptions) {
49 super(template);
50 this.order = order;
51 this.generic = false;
52 this.uninitialized = false;
53 this.polymorphic = false;
54 this.exceptions = exceptions;
55
56 for (SpecializationThrowsData exception : exceptions) {
57 exception.setSpecialization(this);
58 }
59 }
60
61 public SpecializationData(TemplateMethod template, boolean generic, boolean uninitialized, boolean polymorphic) {
62 super(template);
63 this.order = Specialization.DEFAULT_ORDER;
64 this.generic = generic;
65 this.uninitialized = uninitialized;
66 this.polymorphic = polymorphic;
67 this.exceptions = Collections.emptyList();
68 }
69
70 public void setReachable(boolean reachable) {
71 this.reachable = reachable;
72 }
73
74 public boolean isReachable() {
75 return reachable;
76 }
77
78 public boolean isPolymorphic() {
79 return polymorphic;
80 }
81
82 @Override
83 protected List<MessageContainer> findChildContainers() {
84 List<MessageContainer> sinks = new ArrayList<>();
85 if (exceptions != null) {
86 sinks.addAll(exceptions);
87 }
88 if (guards != null) {
89 sinks.addAll(guards);
90 }
91 return sinks;
92 }
93
94 public boolean isGenericSpecialization(ProcessorContext context) {
95 if (isGeneric()) {
96 return true;
97 }
98 if (hasRewrite(context)) {
99 return false;
100 }
101
102 for (ActualParameter parameter : getParameters()) {
103 if (!parameter.getSpecification().isSignature()) {
104 continue;
105 }
106 NodeChildData child = getNode().findChild(parameter.getSpecification().getName());
107 if (child == null) {
108 continue;
109 }
110 if (!parameter.getTypeSystemType().isGeneric()) {
111 return false;
112 }
113 }
114
115 return true;
116 }
117
118 public boolean hasRewrite(ProcessorContext context) {
119 if (!getExceptions().isEmpty()) {
120 return true;
121 }
122 if (!getGuards().isEmpty()) {
123 return true;
124 }
125 if (!getAssumptions().isEmpty()) {
126 return true;
127 }
128 for (ActualParameter parameter : getParameters()) {
129 NodeChildData child = getNode().findChild(parameter.getSpecification().getName());
130 if (child == null) {
131 continue;
132 }
133 ExecutableTypeData type = child.findExecutableType(context, parameter.getTypeSystemType());
134 if (type.hasUnexpectedValue(context)) {
135 return true;
136 }
137 if (type.getReturnType().getTypeSystemType().needsCastTo(context, parameter.getTypeSystemType())) {
138 return true;
139 }
140
141 }
142 return false;
143 }
144
145 @Override
146 public int compareBySignature(TemplateMethod other) {
147 if (this == other) {
148 return 0;
149 } else if (!(other instanceof SpecializationData)) {
150 return super.compareBySignature(other);
151 }
152
153 SpecializationData m2 = (SpecializationData) other;
154
155 if (getOrder() != Specialization.DEFAULT_ORDER && m2.getOrder() != Specialization.DEFAULT_ORDER) {
156 return getOrder() - m2.getOrder();
157 } else if (isUninitialized() ^ m2.isUninitialized()) {
158 return isUninitialized() ? -1 : 1;
159 } else if (isGeneric() ^ m2.isGeneric()) {
160 return isGeneric() ? 1 : -1;
161 }
162
163 if (getTemplate() != m2.getTemplate()) {
164 throw new UnsupportedOperationException("Cannot compare two specializations with different templates.");
165 }
166
167 return super.compareBySignature(m2);
168 }
169
170 public NodeData getNode() {
171 return node;
172 }
173
174 public void setNode(NodeData node) {
175 this.node = node;
176 }
177
178 public void setGuards(List<GuardData> guards) {
179 this.guards = guards;
180 }
181
182 public void setGuardDefinitions(List<String> guardDefinitions) {
183 this.guardDefinitions = guardDefinitions;
184 }
185
186 public int getOrder() {
187 return order;
188 }
189
190 public boolean isGeneric() {
191 return generic;
192 }
193
194 public boolean isUninitialized() {
195 return uninitialized;
196 }
197
198 public List<SpecializationThrowsData> getExceptions() {
199 return exceptions;
200 }
201
202 public List<String> getGuardDefinitions() {
203 return guardDefinitions;
204 }
205
206 public List<GuardData> getGuards() {
207 return guards;
208 }
209
210 public void setShortCircuits(List<ShortCircuitData> shortCircuits) {
211 this.shortCircuits = shortCircuits;
212 }
213
214 public List<ShortCircuitData> getShortCircuits() {
215 return shortCircuits;
216 }
217
218 public List<String> getAssumptions() {
219 return assumptions;
220 }
221
222 void setAssumptions(List<String> assumptions) {
223 this.assumptions = assumptions;
224 }
225
226 public SpecializationData findNextSpecialization() {
227 List<SpecializationData> specializations = node.getSpecializations();
228 for (int i = 0; i < specializations.size() - 1; i++) {
229 if (specializations.get(i) == this) {
230 return specializations.get(i + 1);
231 }
232 }
233 return null;
234 }
235
236 public boolean hasDynamicGuards() {
237 return !getGuards().isEmpty();
238 }
239
240 @Override
241 public String toString() {
242 return String.format("%s [id = %s, method = %s, guards = %s, signature = %s]", getClass().getSimpleName(), getId(), getMethod(), getGuards(), getSignature());
243 }
244
245 public void forceFrame(TypeMirror frameType) {
246 if (getParameters().isEmpty() || !Utils.typeEquals(getParameters().get(0).getType(), frameType)) {
247 ParameterSpec frameSpec = getSpecification().findParameterSpec("frame");
248 getParameters().add(0, new ActualParameter(frameSpec, frameType, -1, false));
249 }
250 }
251 }