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comparison graal/com.oracle.truffle.dsl.processor/src/com/oracle/truffle/dsl/processor/generator/NodeFactoryFactory.java @ 18752:1acaa69ff61b

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Truffle-DSL: refactor generator classes
author Christian Humer <christian.humer@gmail.com>
date Mon, 29 Dec 2014 23:38:16 +0100
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children f6b8787dc113
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18751:e55e18c1f40d 18752:1acaa69ff61b
1 /*
2 * Copyright (c) 2014, 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.generator;
24
25 import static com.oracle.truffle.dsl.processor.java.ElementUtils.*;
26 import static javax.lang.model.element.Modifier.*;
27
28 import java.util.*;
29
30 import javax.lang.model.element.*;
31 import javax.lang.model.type.*;
32 import javax.lang.model.util.*;
33
34 import com.oracle.truffle.api.dsl.*;
35 import com.oracle.truffle.dsl.processor.java.*;
36 import com.oracle.truffle.dsl.processor.java.model.*;
37 import com.oracle.truffle.dsl.processor.java.model.CodeTypeMirror.ArrayCodeTypeMirror;
38 import com.oracle.truffle.dsl.processor.model.*;
39
40 class NodeFactoryFactory extends AbstractClassElementFactory<NodeData> {
41
42 static final String FACTORY_METHOD_NAME = "create0";
43
44 private final Map<NodeData, List<TypeElement>> childTypes;
45 private CodeTypeElement generatedNode;
46
47 NodeFactoryFactory(Map<NodeData, List<TypeElement>> childElements) {
48 this.childTypes = childElements;
49 }
50
51 private static String factoryClassName(NodeData node) {
52 return node.getNodeId() + "Factory";
53 }
54
55 @Override
56 protected CodeTypeElement create(NodeData node) {
57 Modifier visibility = ElementUtils.getVisibility(node.getTemplateType().getModifiers());
58
59 CodeTypeElement clazz = createClass(node, modifiers(), factoryClassName(node), null, false);
60 if (visibility != null) {
61 clazz.getModifiers().add(visibility);
62 }
63 clazz.getModifiers().add(Modifier.FINAL);
64 return clazz;
65 }
66
67 @Override
68 protected void createChildren(NodeData node) {
69 CodeTypeElement clazz = getElement();
70
71 Modifier createVisibility = ElementUtils.getVisibility(clazz.getModifiers());
72
73 if (node.needsFactory()) {
74 NodeBaseFactory factory = new NodeBaseFactory();
75 add(factory, node.getGenericSpecialization() == null ? node.getSpecializations().get(0) : node.getGenericSpecialization());
76 generatedNode = factory.getElement();
77
78 createFactoryMethods(node, clazz, createVisibility);
79
80 for (SpecializationData specialization : node.getSpecializations()) {
81 if (!specialization.isReachable() || specialization.isGeneric()) {
82 continue;
83 }
84
85 if (specialization.isPolymorphic() && node.isPolymorphic(context)) {
86 PolymorphicNodeFactory polymorphicFactory = new PolymorphicNodeFactory(generatedNode);
87 add(polymorphicFactory, specialization);
88 continue;
89 }
90
91 add(new SpecializedNodeFactory(generatedNode), specialization);
92 }
93
94 TypeMirror nodeFactory = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(getContext().getTruffleTypes().getNodeFactoryBase()), node.getNodeType());
95 clazz.setSuperClass(nodeFactory);
96 clazz.add(createNodeFactoryConstructor(node));
97 clazz.add(createCreateNodeMethod(node));
98 clazz.add(createGetInstanceMethod(node, createVisibility));
99 clazz.add(createInstanceConstant(node, clazz.asType()));
100 }
101
102 for (NodeData childNode : childTypes.keySet()) {
103 if (childNode.getTemplateType().getModifiers().contains(Modifier.PRIVATE)) {
104 continue;
105 }
106
107 for (TypeElement type : childTypes.get(childNode)) {
108 Set<Modifier> typeModifiers = ((CodeTypeElement) type).getModifiers();
109 Modifier visibility = ElementUtils.getVisibility(type.getModifiers());
110 typeModifiers.clear();
111 if (visibility != null) {
112 typeModifiers.add(visibility);
113 }
114
115 typeModifiers.add(Modifier.STATIC);
116 typeModifiers.add(Modifier.FINAL);
117 clazz.add(type);
118 }
119 }
120
121 List<NodeData> children = node.getNodeDeclaringChildren();
122 if (node.getDeclaringNode() == null && children.size() > 0) {
123 clazz.add(createGetFactories(node));
124 }
125
126 }
127
128 private Element createNodeFactoryConstructor(NodeData node) {
129 CodeExecutableElement method = new CodeExecutableElement(modifiers(PRIVATE), null, factoryClassName(node));
130 CodeTreeBuilder builder = method.createBuilder();
131 builder.startStatement();
132 builder.startCall("super");
133
134 // node type
135 builder.typeLiteral(node.getNodeType());
136
137 // execution signature
138 builder.startGroup();
139 if (node.getChildExecutions().isEmpty()) {
140 builder.staticReference(context.getTruffleTypes().getDslMetadata(), NodeBaseFactory.EMPTY_CLASS_ARRAY);
141 } else {
142 builder.startNewArray(new ArrayCodeTypeMirror(context.getType(Class.class)), null);
143 for (NodeExecutionData execution : node.getChildExecutions()) {
144 builder.typeLiteral(execution.getNodeType());
145 }
146 builder.end();
147 }
148 builder.end();
149
150 // node signatures
151 builder.startGroup();
152 builder.startNewArray(new ArrayCodeTypeMirror(new ArrayCodeTypeMirror(context.getType(Class.class))), null);
153 List<ExecutableElement> constructors = NodeBaseFactory.findUserConstructors(generatedNode.asType());
154 for (ExecutableElement constructor : constructors) {
155 builder.startGroup();
156 if (constructor.getParameters().isEmpty()) {
157 builder.staticReference(context.getTruffleTypes().getDslMetadata(), NodeBaseFactory.EMPTY_CLASS_ARRAY);
158 } else {
159 builder.startNewArray(new ArrayCodeTypeMirror(context.getType(Class.class)), null);
160 for (VariableElement var : constructor.getParameters()) {
161 builder.typeLiteral(var.asType());
162 }
163 builder.end();
164 }
165 builder.end();
166 }
167 builder.end();
168 builder.end();
169
170 builder.end().end().end();
171 return method;
172 }
173
174 private CodeExecutableElement createCreateNodeMethod(NodeData node) {
175 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC), node.getNodeType(), "createNode");
176 CodeVariableElement arguments = new CodeVariableElement(getContext().getType(Object.class), "arguments");
177 method.setVarArgs(true);
178 method.addParameter(arguments);
179
180 CodeTreeBuilder builder = method.createBuilder();
181 List<ExecutableElement> signatures = NodeBaseFactory.findUserConstructors(generatedNode.asType());
182 boolean ifStarted = false;
183
184 for (ExecutableElement element : signatures) {
185 ifStarted = builder.startIf(ifStarted);
186 builder.string("arguments.length == " + element.getParameters().size());
187
188 int index = 0;
189 for (VariableElement param : element.getParameters()) {
190 if (ElementUtils.isObject(param.asType())) {
191 continue;
192 }
193 builder.string(" && ");
194 if (!param.asType().getKind().isPrimitive()) {
195 builder.string("(arguments[" + index + "] == null || ");
196 }
197 builder.string("arguments[" + index + "] instanceof ");
198 builder.type(ElementUtils.boxType(getContext(), param.asType()));
199 if (!param.asType().getKind().isPrimitive()) {
200 builder.string(")");
201 }
202 index++;
203 }
204 builder.end();
205 builder.startBlock();
206
207 builder.startReturn().startCall("create");
208 index = 0;
209 for (VariableElement param : element.getParameters()) {
210 builder.startGroup();
211 if (!ElementUtils.isObject(param.asType())) {
212 builder.string("(").type(param.asType()).string(") ");
213 }
214 builder.string("arguments[").string(String.valueOf(index)).string("]");
215 builder.end();
216 index++;
217 }
218 builder.end().end();
219
220 builder.end(); // block
221 }
222
223 builder.startElseBlock();
224 builder.startThrow().startNew(getContext().getType(IllegalArgumentException.class));
225 builder.doubleQuote("Invalid create signature.");
226 builder.end().end();
227 builder.end(); // else block
228 return method;
229 }
230
231 private ExecutableElement createGetInstanceMethod(NodeData node, Modifier visibility) {
232 TypeElement nodeFactoryType = ElementUtils.fromTypeMirror(getContext().getType(NodeFactory.class));
233 TypeMirror returnType = ElementUtils.getDeclaredType(nodeFactoryType, node.getNodeType());
234
235 CodeExecutableElement method = new CodeExecutableElement(modifiers(), returnType, "getInstance");
236 if (visibility != null) {
237 method.getModifiers().add(visibility);
238 }
239 method.getModifiers().add(Modifier.STATIC);
240
241 String varName = instanceVarName(node);
242
243 CodeTreeBuilder builder = method.createBuilder();
244 builder.startIf();
245 builder.string(varName).string(" == null");
246 builder.end().startBlock();
247
248 builder.startStatement();
249 builder.string(varName);
250 builder.string(" = ");
251 builder.startNew(factoryClassName(node)).end();
252 builder.end();
253
254 builder.end();
255 builder.startReturn().string(varName).end();
256 return method;
257 }
258
259 private static String instanceVarName(NodeData node) {
260 if (node.getDeclaringNode() != null) {
261 return ElementUtils.firstLetterLowerCase(factoryClassName(node)) + "Instance";
262 } else {
263 return "instance";
264 }
265 }
266
267 private static CodeVariableElement createInstanceConstant(NodeData node, TypeMirror factoryType) {
268 String varName = instanceVarName(node);
269 CodeVariableElement var = new CodeVariableElement(modifiers(), factoryType, varName);
270 var.getModifiers().add(Modifier.PRIVATE);
271 var.getModifiers().add(Modifier.STATIC);
272 return var;
273 }
274
275 private ExecutableElement createGetFactories(NodeData node) {
276 List<NodeData> children = node.getNodeDeclaringChildren();
277 if (node.needsFactory()) {
278 children.add(node);
279 }
280
281 List<TypeMirror> nodeTypesList = new ArrayList<>();
282 TypeMirror prev = null;
283 boolean allSame = true;
284 for (NodeData child : children) {
285 nodeTypesList.add(child.getNodeType());
286 if (prev != null && !ElementUtils.typeEquals(child.getNodeType(), prev)) {
287 allSame = false;
288 }
289 prev = child.getNodeType();
290 }
291 TypeMirror commonNodeSuperType = ElementUtils.getCommonSuperType(getContext(), nodeTypesList.toArray(new TypeMirror[nodeTypesList.size()]));
292
293 Types types = getContext().getEnvironment().getTypeUtils();
294 TypeMirror factoryType = getContext().getType(NodeFactory.class);
295 TypeMirror baseType;
296 if (allSame) {
297 baseType = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(factoryType), commonNodeSuperType);
298 } else {
299 baseType = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(factoryType), types.getWildcardType(commonNodeSuperType, null));
300 }
301 TypeMirror listType = ElementUtils.getDeclaredType(ElementUtils.fromTypeMirror(getContext().getType(List.class)), baseType);
302
303 CodeExecutableElement method = new CodeExecutableElement(modifiers(PUBLIC, STATIC), listType, "getFactories");
304
305 CodeTreeBuilder builder = method.createBuilder();
306 builder.startReturn();
307 builder.startStaticCall(getContext().getType(Arrays.class), "asList");
308
309 for (NodeData child : children) {
310 builder.startGroup();
311 NodeData childNode = child;
312 List<NodeData> factories = new ArrayList<>();
313 while (childNode.getDeclaringNode() != null) {
314 factories.add(childNode);
315 childNode = childNode.getDeclaringNode();
316 }
317 Collections.reverse(factories);
318 for (NodeData nodeData : factories) {
319 builder.string(factoryClassName(nodeData)).string(".");
320 }
321 builder.string("getInstance()");
322 builder.end();
323 }
324 builder.end();
325 builder.end();
326 return method;
327 }
328
329 private void createFactoryMethods(NodeData node, CodeTypeElement clazz, Modifier createVisibility) {
330 List<ExecutableElement> constructors = NodeBaseFactory.findUserConstructors(generatedNode.asType());
331 for (ExecutableElement constructor : constructors) {
332 clazz.add(createCreateMethod(node, createVisibility, constructor));
333 }
334 }
335
336 private CodeExecutableElement createCreateMethod(NodeData node, Modifier visibility, ExecutableElement constructor) {
337 CodeExecutableElement method = CodeExecutableElement.clone(getContext().getEnvironment(), constructor);
338 method.setSimpleName(CodeNames.of("create"));
339 method.getModifiers().clear();
340 if (visibility != null) {
341 method.getModifiers().add(visibility);
342 }
343 method.getModifiers().add(Modifier.STATIC);
344 method.setReturnType(node.getNodeType());
345
346 CodeTreeBuilder body = method.createBuilder();
347 body.startReturn();
348 if (node.getSpecializations().isEmpty()) {
349 body.nullLiteral();
350 } else {
351 body.startCall(NodeBaseFactory.nodeSpecializationClassName(node.getSpecializations().get(0)), FACTORY_METHOD_NAME);
352 for (VariableElement var : method.getParameters()) {
353 body.string(var.getSimpleName().toString());
354 }
355 body.end();
356 }
357 body.end();
358 return method;
359 }
360
361 }