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866e5b51 | 1 | /******************************************************************************* |
4311ac8b | 2 | * Copyright (c) 2011, 2013 Ericsson, Ecole Polytechnique de Montreal and others |
866e5b51 FC |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are made | |
5 | * available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
4311ac8b MAL |
9 | * Contributors: |
10 | * Matthew Khouzam - Initial Design and Grammar | |
11 | * Francis Giraldeau - Initial API and implementation | |
12 | * Simon Marchi - Initial API and implementation | |
866e5b51 FC |
13 | *******************************************************************************/ |
14 | ||
ce2388e0 | 15 | package org.eclipse.linuxtools.internal.ctf.core.event.metadata; |
866e5b51 FC |
16 | |
17 | import java.io.FileNotFoundException; | |
18 | import java.io.IOException; | |
19 | import java.io.UnsupportedEncodingException; | |
4311ac8b | 20 | import java.math.BigInteger; |
866e5b51 FC |
21 | import java.nio.ByteOrder; |
22 | import java.util.ArrayList; | |
23 | import java.util.Collections; | |
866e5b51 FC |
24 | import java.util.LinkedList; |
25 | import java.util.List; | |
866e5b51 FC |
26 | import java.util.UUID; |
27 | ||
28 | import org.antlr.runtime.tree.CommonTree; | |
4311ac8b | 29 | import org.eclipse.core.runtime.IStatus; |
866e5b51 | 30 | import org.eclipse.linuxtools.ctf.core.event.CTFClock; |
866e5b51 FC |
31 | import org.eclipse.linuxtools.ctf.core.event.types.ArrayDeclaration; |
32 | import org.eclipse.linuxtools.ctf.core.event.types.Encoding; | |
33 | import org.eclipse.linuxtools.ctf.core.event.types.EnumDeclaration; | |
53047a66 | 34 | import org.eclipse.linuxtools.ctf.core.event.types.FloatDeclaration; |
866e5b51 FC |
35 | import org.eclipse.linuxtools.ctf.core.event.types.IDeclaration; |
36 | import org.eclipse.linuxtools.ctf.core.event.types.IntegerDeclaration; | |
37 | import org.eclipse.linuxtools.ctf.core.event.types.SequenceDeclaration; | |
38 | import org.eclipse.linuxtools.ctf.core.event.types.StringDeclaration; | |
39 | import org.eclipse.linuxtools.ctf.core.event.types.StructDeclaration; | |
40 | import org.eclipse.linuxtools.ctf.core.event.types.VariantDeclaration; | |
41 | import org.eclipse.linuxtools.ctf.core.trace.CTFTrace; | |
486efb2e | 42 | import org.eclipse.linuxtools.ctf.core.trace.Stream; |
866e5b51 | 43 | import org.eclipse.linuxtools.ctf.parser.CTFParser; |
4311ac8b | 44 | import org.eclipse.linuxtools.internal.ctf.core.Activator; |
8e964be1 | 45 | import org.eclipse.linuxtools.internal.ctf.core.event.EventDeclaration; |
ce2388e0 | 46 | import org.eclipse.linuxtools.internal.ctf.core.event.metadata.exceptions.ParseException; |
866e5b51 | 47 | |
866e5b51 | 48 | /** |
251274dd | 49 | * IOStructGen |
866e5b51 | 50 | */ |
866e5b51 FC |
51 | public class IOStructGen { |
52 | ||
53 | // ------------------------------------------------------------------------ | |
54 | // Attributes | |
55 | // ------------------------------------------------------------------------ | |
56 | ||
0594c61c | 57 | private static final boolean DEBUG = false; |
866e5b51 FC |
58 | |
59 | /** | |
60 | * The trace | |
61 | */ | |
62 | private final CTFTrace trace; | |
63 | private final CommonTree tree; | |
64 | ||
65 | /** | |
66 | * The current declaration scope. | |
67 | */ | |
68 | private DeclarationScope scope = null; | |
69 | ||
70 | // ------------------------------------------------------------------------ | |
71 | // Constructor | |
72 | // ------------------------------------------------------------------------ | |
73 | ||
9ac2eb62 | 74 | /** |
ecb12461 | 75 | * Constructor |
be6df2d8 AM |
76 | * |
77 | * @param tree | |
78 | * the tree (ANTLR generated) with the parsed TSDL data. | |
79 | * @param trace | |
80 | * the trace containing the places to put all the read metadata | |
9ac2eb62 | 81 | */ |
866e5b51 FC |
82 | public IOStructGen(CommonTree tree, CTFTrace trace) { |
83 | this.trace = trace; | |
84 | this.tree = tree; | |
85 | } | |
86 | ||
9ac2eb62 MK |
87 | /** |
88 | * Parse the tree and populate the trace defined in the constructor. | |
be6df2d8 | 89 | * |
9ac2eb62 | 90 | * @throws ParseException |
be6df2d8 | 91 | * If there was a problem parsing the metadata |
9ac2eb62 | 92 | */ |
866e5b51 FC |
93 | public void generate() throws ParseException { |
94 | parseRoot(tree); | |
95 | } | |
96 | ||
97 | // ------------------------------------------------------------------------ | |
98 | // Operations | |
99 | // ------------------------------------------------------------------------ | |
100 | ||
101 | /** | |
102 | * Parse the root node. | |
103 | * | |
104 | * @param root | |
105 | * A ROOT node. | |
106 | * @throws ParseException | |
107 | */ | |
108 | private void parseRoot(CommonTree root) throws ParseException { | |
866e5b51 FC |
109 | |
110 | List<CommonTree> children = root.getChildren(); | |
866e5b51 FC |
111 | java.io.FileOutputStream fos = null; |
112 | java.io.OutputStreamWriter out = null; | |
0594c61c | 113 | if (DEBUG) { |
866e5b51 FC |
114 | try { |
115 | fos = new java.io.FileOutputStream("/tmp/astInfo.txt"); //$NON-NLS-1$ | |
116 | out = new java.io.OutputStreamWriter(fos, "UTF-8"); //$NON-NLS-1$ | |
117 | } catch (FileNotFoundException e) { | |
118 | e.printStackTrace(); | |
119 | return; | |
120 | } catch (UnsupportedEncodingException e) { | |
121 | e.printStackTrace(); | |
122 | return; | |
123 | } | |
124 | } | |
125 | ||
126 | CommonTree traceNode = null; | |
127 | List<CommonTree> streams = new ArrayList<CommonTree>(); | |
128 | List<CommonTree> events = new ArrayList<CommonTree>(); | |
129 | List<CommonTree> declarations = new ArrayList<CommonTree>(); | |
130 | List<CommonTree> environments = new ArrayList<CommonTree>(); | |
131 | List<CommonTree> clocks = new ArrayList<CommonTree>(); | |
4c9d2941 | 132 | List<CommonTree> callsites = new ArrayList<CommonTree>(); |
866e5b51 FC |
133 | /* Create a new declaration scope with no parent. */ |
134 | pushScope(); | |
135 | ||
136 | try { | |
137 | for (CommonTree child : children) { | |
4c9d2941 | 138 | final int type = child.getType(); |
0594c61c | 139 | if (DEBUG) { |
866e5b51 | 140 | out.write(child.toString() |
4c9d2941 | 141 | + " -> " + type + '\n'); //$NON-NLS-1$ |
866e5b51 | 142 | } |
4c9d2941 | 143 | switch (type) { |
866e5b51 FC |
144 | case CTFParser.DECLARATION: |
145 | declarations.add(child); | |
146 | break; | |
147 | case CTFParser.TRACE: | |
148 | if (traceNode != null) { | |
149 | throw new ParseException( | |
150 | "Only one trace block is allowed"); //$NON-NLS-1$ | |
151 | } | |
152 | traceNode = child; | |
153 | break; | |
154 | case CTFParser.STREAM: | |
155 | streams.add(child); | |
156 | break; | |
157 | case CTFParser.EVENT: | |
158 | events.add(child); | |
159 | break; | |
160 | case CTFParser.CLOCK: | |
161 | clocks.add(child); | |
162 | break; | |
163 | case CTFParser.ENV: | |
164 | environments.add(child); | |
165 | break; | |
4c9d2941 MK |
166 | case CTFParser.CALLSITE: |
167 | callsites.add(child); | |
168 | break; | |
866e5b51 FC |
169 | default: |
170 | childTypeError(child); | |
171 | } | |
172 | } | |
0594c61c | 173 | if (DEBUG) { |
866e5b51 FC |
174 | out.write("Declarations\n"); //$NON-NLS-1$ |
175 | } | |
176 | for (CommonTree decl : declarations) { | |
0594c61c | 177 | if (DEBUG) { |
866e5b51 FC |
178 | out.write(decl.toString() + '\n'); |
179 | } | |
180 | parseRootDeclaration(decl); | |
181 | } | |
866e5b51 FC |
182 | if (traceNode == null) { |
183 | throw new ParseException("Missing trace block"); //$NON-NLS-1$ | |
184 | } | |
185 | ||
186 | parseTrace(traceNode); | |
187 | ||
0594c61c | 188 | if (DEBUG) { |
72dbc4ac MK |
189 | out.write("Environments\n"); //$NON-NLS-1$ |
190 | } | |
191 | for (CommonTree environment : environments) { | |
192 | parseEnvironment(environment); | |
193 | } | |
0594c61c | 194 | if (DEBUG) { |
72dbc4ac MK |
195 | out.write("Clocks\n"); //$NON-NLS-1$ |
196 | } | |
197 | for (CommonTree clock : clocks) { | |
198 | parseClock(clock); | |
199 | } | |
0594c61c | 200 | if (DEBUG) { |
4c9d2941 MK |
201 | out.write("Callsites\n"); //$NON-NLS-1$ |
202 | } | |
203 | for (CommonTree callsite : callsites) { | |
204 | parseCallsite(callsite); | |
205 | } | |
72dbc4ac | 206 | |
0594c61c | 207 | if (DEBUG) { |
866e5b51 FC |
208 | out.write("Streams\n"); //$NON-NLS-1$ |
209 | } | |
210 | if (streams.size() > 0) { | |
211 | for (CommonTree stream : streams) { | |
0594c61c | 212 | if (DEBUG) { |
866e5b51 FC |
213 | try { |
214 | out.write(stream.toString() + '\n'); | |
215 | } catch (IOException e) { | |
216 | e.printStackTrace(); | |
217 | } | |
218 | } | |
219 | parseStream(stream); | |
220 | } | |
221 | } else { | |
222 | /* Add an empty stream that will have a null id */ | |
223 | trace.addStream(new Stream(trace)); | |
224 | } | |
225 | ||
0594c61c | 226 | if (DEBUG) { |
866e5b51 FC |
227 | out.write("Events\n"); //$NON-NLS-1$ |
228 | } | |
229 | for (CommonTree event : events) { | |
230 | parseEvent(event); | |
0594c61c | 231 | if (DEBUG) { |
32ede2ec MK |
232 | CommonTree name = (CommonTree) event.getChild(0).getChild(1).getChild(0).getChild(0); |
233 | CommonTree id = (CommonTree) event.getChild(1).getChild(1).getChild(0).getChild(0); | |
866e5b51 FC |
234 | out.write("Name = " + name + " Id = " + id + '\n'); //$NON-NLS-1$ //$NON-NLS-2$ |
235 | } | |
236 | } | |
237 | ||
0594c61c | 238 | if (DEBUG) { |
866e5b51 FC |
239 | out.close(); |
240 | fos.close(); | |
241 | } | |
242 | } catch (IOException e) { | |
243 | e.printStackTrace(); | |
244 | } | |
245 | popScope(); | |
246 | } | |
247 | ||
4c9d2941 MK |
248 | private void parseCallsite(CommonTree callsite) { |
249 | ||
250 | List<CommonTree> children = callsite.getChildren(); | |
251 | String name = null; | |
0594c61c AM |
252 | String funcName = null; |
253 | long lineNumber = -1; | |
4c9d2941 | 254 | long ip = -1; |
0594c61c | 255 | String fileName = null; |
4c9d2941 MK |
256 | |
257 | for (CommonTree child : children) { | |
258 | String left; | |
ecb12461 | 259 | /* this is a regex to find the leading and trailing quotes */ |
4c9d2941 MK |
260 | final String regex = "^\"|\"$"; //$NON-NLS-1$ |
261 | /* this is to replace the previous quotes with nothing... effectively deleting them */ | |
262 | final String nullString = ""; //$NON-NLS-1$ | |
263 | left = child.getChild(0).getChild(0).getChild(0).getText(); | |
264 | if (left.equals("name")) { //$NON-NLS-1$ | |
265 | name = child.getChild(1).getChild(0).getChild(0).getText().replaceAll(regex, nullString); | |
266 | } else if (left.equals("func")) { //$NON-NLS-1$ | |
0594c61c | 267 | funcName = child.getChild(1).getChild(0).getChild(0).getText().replaceAll(regex, nullString); |
4c9d2941 | 268 | } else if (left.equals("ip")) { //$NON-NLS-1$ |
0594c61c | 269 | ip = Long.parseLong(child.getChild(1).getChild(0).getChild(0).getText().substring(2), 16); // trim the 0x |
4c9d2941 | 270 | } else if (left.equals("file")) { //$NON-NLS-1$ |
0594c61c | 271 | fileName = child.getChild(1).getChild(0).getChild(0).getText().replaceAll(regex, nullString); |
4c9d2941 | 272 | } else if (left.equals("line")) { //$NON-NLS-1$ |
0594c61c | 273 | lineNumber = Long.parseLong(child.getChild(1).getChild(0).getChild(0).getText()); |
4c9d2941 MK |
274 | } |
275 | } | |
0594c61c | 276 | trace.addCallsite(name, funcName, ip,fileName, lineNumber); |
4c9d2941 MK |
277 | } |
278 | ||
866e5b51 FC |
279 | private void parseEnvironment(CommonTree environment) { |
280 | List<CommonTree> children = environment.getChildren(); | |
281 | for (CommonTree child : children) { | |
282 | String left; | |
283 | String right; | |
284 | left = child.getChild(0).getChild(0).getChild(0).getText(); | |
285 | right = child.getChild(1).getChild(0).getChild(0).getText(); | |
286 | trace.addEnvironmentVar(left, right); | |
287 | } | |
288 | } | |
289 | ||
290 | private void parseClock(CommonTree clock) { | |
291 | List<CommonTree> children = clock.getChildren(); | |
292 | CTFClock ctfClock = new CTFClock(); | |
293 | for (CommonTree child : children) { | |
72dbc4ac | 294 | final String key = child.getChild(0).getChild(0).getChild(0).getText(); |
866e5b51 FC |
295 | final CommonTree value = (CommonTree) child.getChild(1).getChild(0).getChild(0); |
296 | final int type = value.getType(); | |
297 | switch (type) { | |
298 | case CTFParser.INTEGER: | |
299 | case CTFParser.DECIMAL_LITERAL: | |
284fdee8 | 300 | /* |
32ede2ec MK |
301 | * Not a pretty hack, this is to make sure that there is no |
302 | * number overflow due to 63 bit integers. The offset should | |
303 | * only really be an issue in the year 2262. the tracer in C/ASM | |
304 | * can write an offset in an unsigned 64 bit long. In java, the | |
305 | * last bit, being set to 1 will be read as a negative number, | |
306 | * but since it is too big a positive it will throw an | |
307 | * exception. this will happen in 2^63 ns from 1970. Therefore | |
308 | * 293 years from 1970 | |
284fdee8 | 309 | */ |
866e5b51 | 310 | Long numValue; |
32ede2ec | 311 | try { |
866e5b51 | 312 | numValue = Long.parseLong(value.getText()); |
32ede2ec | 313 | } catch (Exception e) { |
866e5b51 FC |
314 | numValue = 1330938566783103277L; |
315 | } | |
316 | ctfClock.addAttribute(key, numValue); | |
317 | break; | |
318 | default: | |
319 | ctfClock.addAttribute(key, value.getText()); | |
320 | } | |
321 | ||
322 | } | |
0594c61c AM |
323 | String nameValue = ctfClock.getName(); |
324 | trace.addClock(nameValue, ctfClock); | |
866e5b51 FC |
325 | } |
326 | ||
327 | private void parseTrace(CommonTree traceNode) throws ParseException { | |
866e5b51 FC |
328 | |
329 | List<CommonTree> children = traceNode.getChildren(); | |
330 | if (children == null) { | |
331 | throw new ParseException("Trace block is empty"); //$NON-NLS-1$ | |
332 | } | |
333 | ||
334 | pushScope(); | |
335 | ||
336 | for (CommonTree child : children) { | |
337 | switch (child.getType()) { | |
338 | case CTFParser.TYPEALIAS: | |
339 | parseTypealias(child); | |
340 | break; | |
341 | case CTFParser.TYPEDEF: | |
342 | parseTypedef(child); | |
343 | break; | |
344 | case CTFParser.CTF_EXPRESSION_TYPE: | |
345 | case CTFParser.CTF_EXPRESSION_VAL: | |
346 | parseTraceDeclaration(child); | |
347 | break; | |
348 | default: | |
349 | childTypeError(child); | |
350 | break; | |
351 | } | |
352 | } | |
353 | ||
354 | /* | |
355 | * If trace byte order was not specified and not using packet based | |
356 | * metadata | |
357 | */ | |
358 | if (trace.getByteOrder() == null) { | |
359 | throw new ParseException("Trace byte order not set"); //$NON-NLS-1$ | |
360 | } | |
361 | ||
362 | popScope(); | |
363 | } | |
364 | ||
365 | private void parseTraceDeclaration(CommonTree traceDecl) | |
366 | throws ParseException { | |
866e5b51 FC |
367 | |
368 | /* There should be a left and right */ | |
866e5b51 FC |
369 | |
370 | CommonTree leftNode = (CommonTree) traceDecl.getChild(0); | |
866e5b51 | 371 | CommonTree rightNode = (CommonTree) traceDecl.getChild(1); |
866e5b51 FC |
372 | |
373 | List<CommonTree> leftStrings = leftNode.getChildren(); | |
866e5b51 | 374 | |
4311ac8b | 375 | if (!isAnyUnaryString(leftStrings.get(0))) { |
866e5b51 FC |
376 | throw new ParseException( |
377 | "Left side of CTF assignment must be a string"); //$NON-NLS-1$ | |
378 | } | |
379 | ||
380 | String left = concatenateUnaryStrings(leftStrings); | |
381 | ||
fafc36a7 | 382 | if (left.equals(MetadataStrings.MAJOR)) { |
07804639 | 383 | if (trace.majorIsSet()) { |
866e5b51 FC |
384 | throw new ParseException("major is already set"); //$NON-NLS-1$ |
385 | } | |
386 | ||
387 | trace.setMajor(getMajorOrMinor(rightNode)); | |
fafc36a7 | 388 | } else if (left.equals(MetadataStrings.MINOR)) { |
866e5b51 FC |
389 | if (trace.minorIsSet()) { |
390 | throw new ParseException("minor is already set"); //$NON-NLS-1$ | |
391 | } | |
392 | ||
393 | trace.setMinor(getMajorOrMinor(rightNode)); | |
fafc36a7 | 394 | } else if (left.equals(MetadataStrings.UUID_STRING)) { |
866e5b51 FC |
395 | UUID uuid = getUUID(rightNode); |
396 | ||
397 | /* | |
398 | * If uuid was already set by a metadata packet, compare it to see | |
399 | * if it matches | |
400 | */ | |
0594c61c | 401 | if (trace.uuidIsSet()) { |
866e5b51 FC |
402 | if (trace.getUUID().compareTo(uuid) != 0) { |
403 | throw new ParseException("UUID mismatch. Packet says " //$NON-NLS-1$ | |
404 | + trace.getUUID() + " but metadata says " + uuid); //$NON-NLS-1$ | |
405 | } | |
406 | } else { | |
407 | trace.setUUID(uuid); | |
408 | } | |
409 | ||
fafc36a7 | 410 | } else if (left.equals(MetadataStrings.BYTE_ORDER)) { |
866e5b51 FC |
411 | ByteOrder byteOrder = getByteOrder(rightNode); |
412 | ||
413 | /* | |
414 | * If byte order was already set by a metadata packet, compare it to | |
415 | * see if it matches | |
416 | */ | |
417 | if (trace.getByteOrder() != null) { | |
418 | if (trace.getByteOrder() != byteOrder) { | |
419 | throw new ParseException( | |
420 | "Endianness mismatch. Magic number says " //$NON-NLS-1$ | |
421 | + trace.getByteOrder() | |
422 | + " but metadata says " + byteOrder); //$NON-NLS-1$ | |
423 | } | |
424 | } else { | |
425 | trace.setByteOrder(byteOrder); | |
72dbc4ac MK |
426 | final DeclarationScope parentScope = scope.getParentScope(); |
427 | String types[] = parentScope.getTypeNames(); | |
428 | ||
429 | for (String type : types) { | |
430 | IDeclaration d = parentScope.lookupType(type); | |
431 | if (d instanceof IntegerDeclaration) { | |
432 | addByteOrder(byteOrder, parentScope, type, (IntegerDeclaration) d); | |
433 | } else if (d instanceof StructDeclaration) { | |
434 | setAlign(parentScope, (StructDeclaration) d, byteOrder); | |
435 | } | |
436 | } | |
866e5b51 | 437 | } |
fafc36a7 | 438 | } else if (left.equals(MetadataStrings.PACKET_HEADER)) { |
866e5b51 FC |
439 | if (trace.packetHeaderIsSet()) { |
440 | throw new ParseException("packet.header already defined"); //$NON-NLS-1$ | |
441 | } | |
442 | ||
443 | CommonTree typeSpecifier = (CommonTree) rightNode.getChild(0); | |
444 | ||
445 | if (typeSpecifier.getType() != CTFParser.TYPE_SPECIFIER_LIST) { | |
446 | throw new ParseException( | |
447 | "packet.header expects a type specifier"); //$NON-NLS-1$ | |
448 | } | |
449 | ||
450 | IDeclaration packetHeaderDecl = parseTypeSpecifierList( | |
451 | typeSpecifier, null); | |
452 | ||
453 | if (!(packetHeaderDecl instanceof StructDeclaration)) { | |
454 | throw new ParseException("packet.header expects a struct"); //$NON-NLS-1$ | |
455 | } | |
456 | ||
457 | trace.setPacketHeader((StructDeclaration) packetHeaderDecl); | |
458 | } else { | |
4311ac8b | 459 | Activator.log(IStatus.WARNING, Messages.IOStructGen_UnknownTraceAttributeWarning + " " + left); //$NON-NLS-1$ |
866e5b51 FC |
460 | } |
461 | } | |
462 | ||
72dbc4ac MK |
463 | private static void addByteOrder(ByteOrder byteOrder, |
464 | final DeclarationScope parentScope, String name, | |
465 | IntegerDeclaration decl) throws ParseException { | |
466 | ||
467 | if (decl.getByteOrder() == null) { | |
468 | IntegerDeclaration newI; | |
469 | newI = new IntegerDeclaration(decl.getLength(), decl.isSigned(), | |
470 | decl.getBase(), byteOrder, decl.getEncoding(), | |
471 | decl.getClock(), decl.getAlignment()); | |
472 | parentScope.replaceType(name, newI); | |
473 | } | |
474 | } | |
475 | ||
476 | private void setAlign(DeclarationScope parentScope, StructDeclaration sd, | |
477 | ByteOrder byteOrder) throws ParseException { | |
478 | ||
479 | for (String s : sd.getFieldsList()) { | |
480 | IDeclaration d = sd.getFields().get(s); | |
481 | ||
482 | if (d instanceof StructDeclaration) { | |
483 | setAlign(parentScope, (StructDeclaration) d, byteOrder); | |
484 | ||
485 | } else if (d instanceof VariantDeclaration) { | |
486 | setAlign(parentScope, (VariantDeclaration) d, byteOrder); | |
487 | ||
488 | } else if (d instanceof IntegerDeclaration) { | |
489 | IntegerDeclaration decl = (IntegerDeclaration) d; | |
490 | if (decl.getByteOrder() == null) { | |
491 | IntegerDeclaration newI; | |
492 | newI = new IntegerDeclaration(decl.getLength(), | |
493 | decl.isSigned(), decl.getBase(), byteOrder, | |
494 | decl.getEncoding(), decl.getClock(), | |
495 | decl.getAlignment()); | |
496 | sd.getFields().put(s, newI); | |
497 | } | |
498 | } | |
499 | } | |
500 | } | |
501 | ||
502 | private void setAlign(DeclarationScope parentScope, VariantDeclaration vd, | |
503 | ByteOrder byteOrder) throws ParseException { | |
504 | ||
505 | for (String s : vd.getFields().keySet()) { | |
506 | IDeclaration d = vd.getFields().get(s); | |
507 | ||
508 | if (d instanceof StructDeclaration) { | |
509 | setAlign(parentScope, (StructDeclaration) d, byteOrder); | |
510 | ||
511 | } else if (d instanceof IntegerDeclaration) { | |
512 | IntegerDeclaration decl = (IntegerDeclaration) d; | |
513 | IntegerDeclaration newI; | |
514 | newI = new IntegerDeclaration(decl.getLength(), | |
515 | decl.isSigned(), decl.getBase(), byteOrder, | |
516 | decl.getEncoding(), decl.getClock(), | |
517 | decl.getAlignment()); | |
518 | vd.getFields().put(s, newI); | |
519 | } | |
520 | } | |
521 | } | |
522 | ||
866e5b51 | 523 | private void parseStream(CommonTree streamNode) throws ParseException { |
866e5b51 FC |
524 | |
525 | Stream stream = new Stream(trace); | |
526 | ||
527 | List<CommonTree> children = streamNode.getChildren(); | |
528 | if (children == null) { | |
529 | throw new ParseException("Empty stream block"); //$NON-NLS-1$ | |
530 | } | |
531 | ||
532 | pushScope(); | |
533 | ||
534 | for (CommonTree child : children) { | |
535 | switch (child.getType()) { | |
536 | case CTFParser.TYPEALIAS: | |
537 | parseTypealias(child); | |
538 | break; | |
539 | case CTFParser.TYPEDEF: | |
540 | parseTypedef(child); | |
541 | break; | |
542 | case CTFParser.CTF_EXPRESSION_TYPE: | |
543 | case CTFParser.CTF_EXPRESSION_VAL: | |
544 | parseStreamDeclaration(child, stream); | |
545 | break; | |
546 | default: | |
547 | childTypeError(child); | |
548 | break; | |
549 | } | |
550 | } | |
551 | ||
9ac2eb62 | 552 | if (stream.isIdSet()) { |
866e5b51 | 553 | if (!trace.packetHeaderIsSet() |
fafc36a7 | 554 | || !trace.getPacketHeader().hasField(MetadataStrings.STREAM_ID)) { |
866e5b51 FC |
555 | throw new ParseException( |
556 | "Stream has an ID, but there is no stream_id field in packet header."); //$NON-NLS-1$ | |
557 | } | |
558 | } | |
559 | ||
560 | trace.addStream(stream); | |
561 | ||
562 | popScope(); | |
563 | } | |
564 | ||
565 | private void parseStreamDeclaration(CommonTree streamDecl, Stream stream) | |
566 | throws ParseException { | |
866e5b51 FC |
567 | |
568 | /* There should be a left and right */ | |
866e5b51 FC |
569 | |
570 | CommonTree leftNode = (CommonTree) streamDecl.getChild(0); | |
866e5b51 | 571 | CommonTree rightNode = (CommonTree) streamDecl.getChild(1); |
866e5b51 FC |
572 | |
573 | List<CommonTree> leftStrings = leftNode.getChildren(); | |
866e5b51 | 574 | |
4311ac8b | 575 | if (!isAnyUnaryString(leftStrings.get(0))) { |
866e5b51 FC |
576 | throw new ParseException( |
577 | "Left side of CTF assignment must be a string"); //$NON-NLS-1$ | |
578 | } | |
579 | ||
580 | String left = concatenateUnaryStrings(leftStrings); | |
581 | ||
fafc36a7 | 582 | if (left.equals(MetadataStrings.ID)) { |
9ac2eb62 | 583 | if (stream.isIdSet()) { |
866e5b51 FC |
584 | throw new ParseException("stream id already defined"); //$NON-NLS-1$ |
585 | } | |
586 | ||
587 | long streamID = getStreamID(rightNode); | |
588 | ||
589 | stream.setId(streamID); | |
fafc36a7 | 590 | } else if (left.equals(MetadataStrings.EVENT_HEADER)) { |
9ac2eb62 | 591 | if (stream.isEventHeaderSet()) { |
866e5b51 FC |
592 | throw new ParseException("event.header already defined"); //$NON-NLS-1$ |
593 | } | |
594 | ||
595 | CommonTree typeSpecifier = (CommonTree) rightNode.getChild(0); | |
596 | ||
597 | if (typeSpecifier.getType() != CTFParser.TYPE_SPECIFIER_LIST) { | |
598 | throw new ParseException( | |
599 | "event.header expects a type specifier"); //$NON-NLS-1$ | |
600 | } | |
601 | ||
602 | IDeclaration eventHeaderDecl = parseTypeSpecifierList( | |
603 | typeSpecifier, null); | |
604 | ||
605 | if (!(eventHeaderDecl instanceof StructDeclaration)) { | |
606 | throw new ParseException("event.header expects a struct"); //$NON-NLS-1$ | |
607 | } | |
608 | ||
609 | stream.setEventHeader((StructDeclaration) eventHeaderDecl); | |
fafc36a7 | 610 | } else if (left.equals(MetadataStrings.EVENT_CONTEXT)) { |
9ac2eb62 | 611 | if (stream.isEventContextSet()) { |
866e5b51 FC |
612 | throw new ParseException("event.context already defined"); //$NON-NLS-1$ |
613 | } | |
614 | ||
615 | CommonTree typeSpecifier = (CommonTree) rightNode.getChild(0); | |
616 | ||
617 | if (typeSpecifier.getType() != CTFParser.TYPE_SPECIFIER_LIST) { | |
618 | throw new ParseException( | |
619 | "event.context expects a type specifier"); //$NON-NLS-1$ | |
620 | } | |
621 | ||
622 | IDeclaration eventContextDecl = parseTypeSpecifierList( | |
623 | typeSpecifier, null); | |
624 | ||
625 | if (!(eventContextDecl instanceof StructDeclaration)) { | |
626 | throw new ParseException("event.context expects a struct"); //$NON-NLS-1$ | |
627 | } | |
628 | ||
629 | stream.setEventContext((StructDeclaration) eventContextDecl); | |
fafc36a7 | 630 | } else if (left.equals(MetadataStrings.PACKET_CONTEXT)) { |
9ac2eb62 | 631 | if (stream.isPacketContextSet()) { |
866e5b51 FC |
632 | throw new ParseException("packet.context already defined"); //$NON-NLS-1$ |
633 | } | |
634 | ||
635 | CommonTree typeSpecifier = (CommonTree) rightNode.getChild(0); | |
636 | ||
637 | if (typeSpecifier.getType() != CTFParser.TYPE_SPECIFIER_LIST) { | |
638 | throw new ParseException( | |
639 | "packet.context expects a type specifier"); //$NON-NLS-1$ | |
640 | } | |
641 | ||
642 | IDeclaration packetContextDecl = parseTypeSpecifierList( | |
643 | typeSpecifier, null); | |
644 | ||
645 | if (!(packetContextDecl instanceof StructDeclaration)) { | |
646 | throw new ParseException("packet.context expects a struct"); //$NON-NLS-1$ | |
647 | } | |
648 | ||
649 | stream.setPacketContext((StructDeclaration) packetContextDecl); | |
650 | } else { | |
4311ac8b | 651 | Activator.log(IStatus.WARNING, Messages.IOStructGen_UnknownStreamAttributeWarning + " " + left); //$NON-NLS-1$ |
866e5b51 FC |
652 | } |
653 | } | |
654 | ||
655 | private void parseEvent(CommonTree eventNode) throws ParseException { | |
866e5b51 FC |
656 | |
657 | List<CommonTree> children = eventNode.getChildren(); | |
658 | if (children == null) { | |
659 | throw new ParseException("Empty event block"); //$NON-NLS-1$ | |
660 | } | |
661 | ||
662 | EventDeclaration event = new EventDeclaration(); | |
663 | ||
664 | pushScope(); | |
665 | ||
666 | for (CommonTree child : children) { | |
667 | switch (child.getType()) { | |
668 | case CTFParser.TYPEALIAS: | |
669 | parseTypealias(child); | |
670 | break; | |
671 | case CTFParser.TYPEDEF: | |
672 | parseTypedef(child); | |
673 | break; | |
674 | case CTFParser.CTF_EXPRESSION_TYPE: | |
675 | case CTFParser.CTF_EXPRESSION_VAL: | |
676 | parseEventDeclaration(child, event); | |
677 | break; | |
678 | default: | |
679 | childTypeError(child); | |
680 | break; | |
681 | } | |
682 | } | |
683 | ||
684 | if (!event.nameIsSet()) { | |
685 | throw new ParseException("Event name not set"); //$NON-NLS-1$ | |
686 | } | |
687 | ||
688 | /* | |
689 | * If the event did not specify a stream, then the trace must be single | |
690 | * stream | |
691 | */ | |
692 | if (!event.streamIsSet()) { | |
693 | if (trace.nbStreams() > 1) { | |
694 | throw new ParseException( | |
695 | "Event without stream_id with more than one stream"); //$NON-NLS-1$ | |
696 | } | |
697 | ||
698 | /* | |
699 | * If the event did not specify a stream, the only existing stream | |
700 | * must not have an id. Note: That behavior could be changed, it | |
701 | * could be possible to just get the only existing stream, whatever | |
702 | * is its id. | |
703 | */ | |
704 | Stream stream = trace.getStream(null); | |
705 | ||
706 | if (stream != null) { | |
707 | event.setStream(stream); | |
708 | } else { | |
709 | throw new ParseException( | |
710 | "Event without stream_id, but there is no stream without id"); //$NON-NLS-1$ | |
711 | } | |
712 | } | |
713 | ||
714 | /* | |
715 | * Add the event to the stream. | |
716 | */ | |
717 | event.getStream().addEvent(event); | |
718 | ||
719 | popScope(); | |
720 | } | |
721 | ||
722 | private void parseEventDeclaration(CommonTree eventDecl, | |
723 | EventDeclaration event) throws ParseException { | |
866e5b51 FC |
724 | |
725 | /* There should be a left and right */ | |
866e5b51 FC |
726 | |
727 | CommonTree leftNode = (CommonTree) eventDecl.getChild(0); | |
866e5b51 | 728 | CommonTree rightNode = (CommonTree) eventDecl.getChild(1); |
866e5b51 FC |
729 | |
730 | List<CommonTree> leftStrings = leftNode.getChildren(); | |
866e5b51 | 731 | |
4311ac8b | 732 | if (!isAnyUnaryString(leftStrings.get(0))) { |
866e5b51 FC |
733 | throw new ParseException( |
734 | "Left side of CTF assignment must be a string"); //$NON-NLS-1$ | |
735 | } | |
736 | ||
737 | String left = concatenateUnaryStrings(leftStrings); | |
738 | ||
fafc36a7 | 739 | if (left.equals(MetadataStrings.NAME2)) { |
866e5b51 FC |
740 | if (event.nameIsSet()) { |
741 | throw new ParseException("name already defined"); //$NON-NLS-1$ | |
742 | } | |
743 | ||
744 | String name = getEventName(rightNode); | |
745 | ||
746 | event.setName(name); | |
fafc36a7 | 747 | } else if (left.equals(MetadataStrings.ID)) { |
866e5b51 FC |
748 | if (event.idIsSet()) { |
749 | throw new ParseException("id already defined"); //$NON-NLS-1$ | |
750 | } | |
751 | ||
752 | long id = getEventID(rightNode); | |
753 | ||
754 | event.setId(id); | |
fafc36a7 | 755 | } else if (left.equals(MetadataStrings.STREAM_ID)) { |
866e5b51 FC |
756 | if (event.streamIsSet()) { |
757 | throw new ParseException("stream id already defined"); //$NON-NLS-1$ | |
758 | } | |
759 | ||
760 | long streamId = getStreamID(rightNode); | |
761 | ||
762 | Stream stream = trace.getStream(streamId); | |
763 | ||
764 | if (stream == null) { | |
765 | throw new ParseException("Stream " + streamId + " not found"); //$NON-NLS-1$ //$NON-NLS-2$ | |
766 | } | |
767 | ||
768 | event.setStream(stream); | |
fafc36a7 | 769 | } else if (left.equals(MetadataStrings.CONTEXT)) { |
866e5b51 FC |
770 | if (event.contextIsSet()) { |
771 | throw new ParseException("context already defined"); //$NON-NLS-1$ | |
772 | } | |
773 | ||
774 | CommonTree typeSpecifier = (CommonTree) rightNode.getChild(0); | |
775 | ||
776 | if (typeSpecifier.getType() != CTFParser.TYPE_SPECIFIER_LIST) { | |
777 | throw new ParseException("context expects a type specifier"); //$NON-NLS-1$ | |
778 | } | |
779 | ||
780 | IDeclaration contextDecl = parseTypeSpecifierList(typeSpecifier, | |
781 | null); | |
782 | ||
783 | if (!(contextDecl instanceof StructDeclaration)) { | |
784 | throw new ParseException("context expects a struct"); //$NON-NLS-1$ | |
785 | } | |
786 | ||
787 | event.setContext((StructDeclaration) contextDecl); | |
fafc36a7 | 788 | } else if (left.equals(MetadataStrings.FIELDS_STRING)) { |
866e5b51 FC |
789 | if (event.fieldsIsSet()) { |
790 | throw new ParseException("fields already defined"); //$NON-NLS-1$ | |
791 | } | |
792 | ||
793 | CommonTree typeSpecifier = (CommonTree) rightNode.getChild(0); | |
794 | ||
795 | if (typeSpecifier.getType() != CTFParser.TYPE_SPECIFIER_LIST) { | |
796 | throw new ParseException("fields expects a type specifier"); //$NON-NLS-1$ | |
797 | } | |
798 | ||
13be1a8f AM |
799 | IDeclaration fieldsDecl; |
800 | fieldsDecl = parseTypeSpecifierList(typeSpecifier, null); | |
866e5b51 FC |
801 | |
802 | if (!(fieldsDecl instanceof StructDeclaration)) { | |
803 | throw new ParseException("fields expects a struct"); //$NON-NLS-1$ | |
804 | } | |
805 | /* | |
32ede2ec MK |
806 | * The underscores in the event names. These underscores were added |
807 | * by the LTTng tracer. | |
866e5b51 | 808 | */ |
91847dfc | 809 | final StructDeclaration fields = (StructDeclaration) fieldsDecl; |
866e5b51 | 810 | event.setFields(fields); |
fafc36a7 | 811 | } else if (left.equals(MetadataStrings.LOGLEVEL2)) { |
32ede2ec | 812 | long logLevel = parseUnaryInteger((CommonTree) rightNode.getChild(0)); |
53047a66 | 813 | event.setLogLevel(logLevel); |
866e5b51 | 814 | } else { |
8e964be1 MK |
815 | /* Custom event attribute, we'll add it to the attributes map */ |
816 | String right = parseUnaryString((CommonTree) rightNode.getChild(0)); | |
817 | event.setCustomAttribute(left, right); | |
866e5b51 FC |
818 | } |
819 | } | |
820 | ||
821 | /** | |
822 | * Parses a declaration at the root level. | |
823 | * | |
824 | * @param declaration | |
825 | * The declaration subtree. | |
826 | * @throws ParseException | |
827 | */ | |
828 | private void parseRootDeclaration(CommonTree declaration) | |
829 | throws ParseException { | |
866e5b51 FC |
830 | |
831 | List<CommonTree> children = declaration.getChildren(); | |
866e5b51 FC |
832 | |
833 | for (CommonTree child : children) { | |
834 | switch (child.getType()) { | |
835 | case CTFParser.TYPEDEF: | |
836 | parseTypedef(child); | |
837 | break; | |
838 | case CTFParser.TYPEALIAS: | |
839 | parseTypealias(child); | |
840 | break; | |
841 | case CTFParser.TYPE_SPECIFIER_LIST: | |
842 | parseTypeSpecifierList(child, null); | |
843 | break; | |
844 | default: | |
845 | childTypeError(child); | |
846 | } | |
847 | } | |
848 | } | |
849 | ||
850 | /** | |
851 | * Parses a typealias node. It parses the target, the alias, and registers | |
852 | * the type in the current scope. | |
853 | * | |
854 | * @param typealias | |
855 | * A TYPEALIAS node. | |
856 | * @throws ParseException | |
857 | */ | |
858 | private void parseTypealias(CommonTree typealias) throws ParseException { | |
866e5b51 FC |
859 | |
860 | List<CommonTree> children = typealias.getChildren(); | |
866e5b51 FC |
861 | |
862 | CommonTree target = null; | |
863 | CommonTree alias = null; | |
864 | ||
865 | for (CommonTree child : children) { | |
866 | switch (child.getType()) { | |
867 | case CTFParser.TYPEALIAS_TARGET: | |
866e5b51 FC |
868 | target = child; |
869 | break; | |
870 | case CTFParser.TYPEALIAS_ALIAS: | |
866e5b51 FC |
871 | alias = child; |
872 | break; | |
873 | default: | |
874 | childTypeError(child); | |
875 | break; | |
876 | } | |
877 | } | |
878 | ||
866e5b51 FC |
879 | |
880 | IDeclaration targetDeclaration = parseTypealiasTarget(target); | |
881 | ||
0594c61c AM |
882 | if ((targetDeclaration instanceof VariantDeclaration) |
883 | && ((VariantDeclaration) targetDeclaration).isTagged()) { | |
884 | throw new ParseException("Typealias of untagged variant is not permitted"); //$NON-NLS-1$ | |
866e5b51 FC |
885 | } |
886 | ||
887 | String aliasString = parseTypealiasAlias(alias); | |
888 | ||
889 | getCurrentScope().registerType(aliasString, targetDeclaration); | |
890 | } | |
891 | ||
892 | /** | |
893 | * Parses the target part of a typealias and gets the corresponding | |
894 | * declaration. | |
895 | * | |
896 | * @param target | |
897 | * A TYPEALIAS_TARGET node. | |
898 | * @return The corresponding declaration. | |
899 | * @throws ParseException | |
900 | */ | |
901 | private IDeclaration parseTypealiasTarget(CommonTree target) | |
902 | throws ParseException { | |
866e5b51 FC |
903 | |
904 | List<CommonTree> children = target.getChildren(); | |
866e5b51 FC |
905 | |
906 | CommonTree typeSpecifierList = null; | |
907 | CommonTree typeDeclaratorList = null; | |
908 | CommonTree typeDeclarator = null; | |
909 | StringBuilder identifierSB = new StringBuilder(); | |
910 | ||
911 | for (CommonTree child : children) { | |
912 | switch (child.getType()) { | |
913 | case CTFParser.TYPE_SPECIFIER_LIST: | |
866e5b51 FC |
914 | typeSpecifierList = child; |
915 | break; | |
916 | case CTFParser.TYPE_DECLARATOR_LIST: | |
866e5b51 FC |
917 | typeDeclaratorList = child; |
918 | break; | |
919 | default: | |
920 | childTypeError(child); | |
921 | break; | |
922 | } | |
923 | } | |
924 | ||
866e5b51 FC |
925 | |
926 | if (typeDeclaratorList != null) { | |
927 | /* | |
928 | * Only allow one declarator | |
929 | * | |
930 | * eg: "typealias uint8_t *, ** := puint8_t;" is not permitted, | |
931 | * otherwise the new type puint8_t would maps to two different | |
932 | * types. | |
933 | */ | |
934 | if (typeDeclaratorList.getChildCount() != 1) { | |
935 | throw new ParseException( | |
936 | "Only one type declarator is allowed in the typealias target"); //$NON-NLS-1$ | |
937 | } | |
938 | ||
939 | typeDeclarator = (CommonTree) typeDeclaratorList.getChild(0); | |
940 | } | |
941 | ||
942 | /* Parse the target type and get the declaration */ | |
943 | IDeclaration targetDeclaration = parseTypeDeclarator(typeDeclarator, | |
944 | typeSpecifierList, identifierSB); | |
945 | ||
946 | /* | |
947 | * We don't allow identifier in the target | |
948 | * | |
949 | * eg: "typealias uint8_t* hello := puint8_t;", the "hello" is not | |
950 | * permitted | |
951 | */ | |
952 | if (identifierSB.length() > 0) { | |
953 | throw new ParseException("Identifier (" + identifierSB.toString() //$NON-NLS-1$ | |
954 | + ") not expected in the typealias target"); //$NON-NLS-1$ | |
955 | } | |
956 | ||
957 | return targetDeclaration; | |
958 | } | |
959 | ||
960 | /** | |
961 | * Parses the alias part of a typealias. It parses the underlying specifier | |
962 | * list and declarator and creates the string representation that will be | |
963 | * used to register the type. | |
964 | * | |
965 | * @param alias | |
966 | * A TYPEALIAS_ALIAS node. | |
967 | * @return The string representation of the alias. | |
968 | * @throws ParseException | |
969 | */ | |
970 | private static String parseTypealiasAlias(CommonTree alias) | |
971 | throws ParseException { | |
866e5b51 FC |
972 | |
973 | List<CommonTree> children = alias.getChildren(); | |
866e5b51 FC |
974 | |
975 | CommonTree typeSpecifierList = null; | |
976 | CommonTree typeDeclaratorList = null; | |
977 | CommonTree typeDeclarator = null; | |
978 | List<CommonTree> pointers = new LinkedList<CommonTree>(); | |
979 | ||
980 | for (CommonTree child : children) { | |
981 | switch (child.getType()) { | |
982 | case CTFParser.TYPE_SPECIFIER_LIST: | |
866e5b51 FC |
983 | typeSpecifierList = child; |
984 | break; | |
985 | case CTFParser.TYPE_DECLARATOR_LIST: | |
866e5b51 FC |
986 | typeDeclaratorList = child; |
987 | break; | |
988 | default: | |
989 | childTypeError(child); | |
990 | break; | |
991 | } | |
992 | } | |
993 | ||
994 | /* If there is a type declarator list, extract the pointers */ | |
995 | if (typeDeclaratorList != null) { | |
996 | /* | |
997 | * Only allow one declarator | |
998 | * | |
999 | * eg: "typealias uint8_t := puint8_t *, **;" is not permitted. | |
1000 | */ | |
1001 | if (typeDeclaratorList.getChildCount() != 1) { | |
1002 | throw new ParseException( | |
1003 | "Only one type declarator is allowed in the typealias alias"); //$NON-NLS-1$ | |
1004 | } | |
1005 | ||
1006 | typeDeclarator = (CommonTree) typeDeclaratorList.getChild(0); | |
1007 | ||
72dbc4ac | 1008 | List<CommonTree> typeDeclaratorChildren = typeDeclarator.getChildren(); |
866e5b51 FC |
1009 | |
1010 | for (CommonTree child : typeDeclaratorChildren) { | |
1011 | switch (child.getType()) { | |
1012 | case CTFParser.POINTER: | |
1013 | pointers.add(child); | |
1014 | break; | |
1015 | case CTFParser.IDENTIFIER: | |
1016 | throw new ParseException("Identifier (" + child.getText() //$NON-NLS-1$ | |
1017 | + ") not expected in the typealias target"); //$NON-NLS-1$ | |
866e5b51 FC |
1018 | default: |
1019 | childTypeError(child); | |
1020 | break; | |
1021 | } | |
1022 | } | |
1023 | } | |
1024 | ||
1025 | return createTypeDeclarationString(typeSpecifierList, pointers); | |
1026 | } | |
1027 | ||
1028 | /** | |
1029 | * Parses a typedef node. This creates and registers a new declaration for | |
1030 | * each declarator found in the typedef. | |
1031 | * | |
1032 | * @param typedef | |
1033 | * A TYPEDEF node. | |
1034 | * @throws ParseException | |
1035 | * If there is an error creating the declaration. | |
1036 | */ | |
1037 | private void parseTypedef(CommonTree typedef) throws ParseException { | |
866e5b51 | 1038 | |
72dbc4ac | 1039 | CommonTree typeDeclaratorListNode = (CommonTree) typedef.getFirstChildWithType(CTFParser.TYPE_DECLARATOR_LIST); |
866e5b51 | 1040 | |
72dbc4ac | 1041 | CommonTree typeSpecifierListNode = (CommonTree) typedef.getFirstChildWithType(CTFParser.TYPE_SPECIFIER_LIST); |
866e5b51 | 1042 | |
72dbc4ac | 1043 | List<CommonTree> typeDeclaratorList = typeDeclaratorListNode.getChildren(); |
866e5b51 FC |
1044 | |
1045 | for (CommonTree typeDeclaratorNode : typeDeclaratorList) { | |
1046 | StringBuilder identifierSB = new StringBuilder(); | |
1047 | ||
0594c61c | 1048 | IDeclaration typeDeclaration = parseTypeDeclarator( |
866e5b51 FC |
1049 | typeDeclaratorNode, typeSpecifierListNode, identifierSB); |
1050 | ||
0594c61c AM |
1051 | if ((typeDeclaration instanceof VariantDeclaration) |
1052 | && ((VariantDeclaration) typeDeclaration).isTagged()) { | |
1053 | throw new ParseException( | |
1054 | "Typealias of untagged variant is not permitted"); //$NON-NLS-1$ | |
866e5b51 FC |
1055 | } |
1056 | ||
1057 | getCurrentScope().registerType(identifierSB.toString(), | |
0594c61c | 1058 | typeDeclaration); |
866e5b51 FC |
1059 | } |
1060 | } | |
1061 | ||
1062 | /** | |
1063 | * Parses a pair type declarator / type specifier list and returns the | |
1064 | * corresponding declaration. If it is present, it also writes the | |
1065 | * identifier of the declarator in the given {@link StringBuilder}. | |
1066 | * | |
1067 | * @param typeDeclarator | |
1068 | * A TYPE_DECLARATOR node. | |
1069 | * @param typeSpecifierList | |
1070 | * A TYPE_SPECIFIER_LIST node. | |
1071 | * @param identifierSB | |
1072 | * A StringBuilder that will receive the identifier found in the | |
1073 | * declarator. | |
1074 | * @return The corresponding declaration. | |
1075 | * @throws ParseException | |
1076 | * If there is an error finding or creating the declaration. | |
1077 | */ | |
1078 | private IDeclaration parseTypeDeclarator(CommonTree typeDeclarator, | |
1079 | CommonTree typeSpecifierList, StringBuilder identifierSB) | |
1080 | throws ParseException { | |
866e5b51 FC |
1081 | |
1082 | IDeclaration declaration = null; | |
1083 | List<CommonTree> children = null; | |
1084 | List<CommonTree> pointers = new LinkedList<CommonTree>(); | |
1085 | List<CommonTree> lengths = new LinkedList<CommonTree>(); | |
1086 | CommonTree identifier = null; | |
1087 | ||
1088 | /* Separate the tokens by type */ | |
1089 | if (typeDeclarator != null) { | |
1090 | children = typeDeclarator.getChildren(); | |
866e5b51 FC |
1091 | for (CommonTree child : children) { |
1092 | ||
1093 | switch (child.getType()) { | |
1094 | case CTFParser.POINTER: | |
1095 | pointers.add(child); | |
1096 | break; | |
1097 | case CTFParser.IDENTIFIER: | |
866e5b51 FC |
1098 | identifier = child; |
1099 | break; | |
1100 | case CTFParser.LENGTH: | |
1101 | lengths.add(child); | |
1102 | break; | |
1103 | default: | |
1104 | childTypeError(child); | |
1105 | break; | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | } | |
1110 | ||
1111 | /* | |
1112 | * Parse the type specifier list, which is the "base" type. For example, | |
1113 | * it would be int in int a[3][len]. | |
1114 | */ | |
1115 | declaration = parseTypeSpecifierList(typeSpecifierList, pointers); | |
1116 | ||
1117 | /* | |
1118 | * Each length subscript means that we must create a nested array or | |
1119 | * sequence. For example, int a[3][len] means that we have an array of 3 | |
1120 | * (sequences of length 'len' of (int)). | |
1121 | */ | |
32ede2ec | 1122 | if (lengths.size() > 0) { |
866e5b51 FC |
1123 | /* We begin at the end */ |
1124 | Collections.reverse(lengths); | |
1125 | ||
1126 | for (CommonTree length : lengths) { | |
1127 | /* | |
1128 | * By looking at the first expression, we can determine whether | |
1129 | * it is an array or a sequence. | |
1130 | */ | |
1131 | List<CommonTree> lengthChildren = length.getChildren(); | |
866e5b51 FC |
1132 | |
1133 | CommonTree first = lengthChildren.get(0); | |
1134 | if (isUnaryInteger(first)) { | |
1135 | /* Array */ | |
1136 | int arrayLength = (int) parseUnaryInteger(first); | |
1137 | ||
1138 | if (arrayLength < 1) { | |
1139 | throw new ParseException("Array length is negative"); //$NON-NLS-1$ | |
1140 | } | |
1141 | ||
1142 | /* Create the array declaration. */ | |
1143 | declaration = new ArrayDeclaration(arrayLength, declaration); | |
4311ac8b | 1144 | } else if (isAnyUnaryString(first)) { |
866e5b51 FC |
1145 | /* Sequence */ |
1146 | String lengthName = concatenateUnaryStrings(lengthChildren); | |
1147 | ||
1148 | /* Create the sequence declaration. */ | |
1149 | declaration = new SequenceDeclaration(lengthName, | |
1150 | declaration); | |
1151 | } else { | |
1152 | childTypeError(first); | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | if (identifier != null) { | |
1158 | identifierSB.append(identifier.getText()); | |
1159 | } | |
1160 | ||
1161 | return declaration; | |
1162 | } | |
1163 | ||
1164 | /** | |
1165 | * Parses a type specifier list and returns the corresponding declaration. | |
1166 | * | |
1167 | * @param typeSpecifierList | |
1168 | * A TYPE_SPECIFIER_LIST node. | |
1169 | * @param pointerList | |
1170 | * A list of POINTER nodes that apply to the specified type. | |
1171 | * @return The corresponding declaration. | |
1172 | * @throws ParseException | |
1173 | * If the type has not been defined or if there is an error | |
1174 | * creating the declaration. | |
1175 | */ | |
1176 | private IDeclaration parseTypeSpecifierList(CommonTree typeSpecifierList, | |
1177 | List<CommonTree> pointerList) throws ParseException { | |
866e5b51 FC |
1178 | IDeclaration declaration = null; |
1179 | ||
1180 | /* | |
1181 | * By looking at the first element of the type specifier list, we can | |
1182 | * determine which type it belongs to. | |
1183 | */ | |
1184 | CommonTree firstChild = (CommonTree) typeSpecifierList.getChild(0); | |
866e5b51 FC |
1185 | |
1186 | switch (firstChild.getType()) { | |
1187 | case CTFParser.FLOATING_POINT: | |
53047a66 | 1188 | declaration = parseFloat(firstChild); |
866e5b51 FC |
1189 | break; |
1190 | case CTFParser.INTEGER: | |
1191 | declaration = parseInteger(firstChild); | |
1192 | break; | |
1193 | case CTFParser.STRING: | |
1194 | declaration = parseString(firstChild); | |
1195 | break; | |
1196 | case CTFParser.STRUCT: | |
1197 | declaration = parseStruct(firstChild); | |
1198 | break; | |
1199 | case CTFParser.VARIANT: | |
1200 | declaration = parseVariant(firstChild); | |
1201 | break; | |
1202 | case CTFParser.ENUM: | |
1203 | declaration = parseEnum(firstChild); | |
1204 | break; | |
1205 | case CTFParser.IDENTIFIER: | |
1206 | case CTFParser.FLOATTOK: | |
1207 | case CTFParser.INTTOK: | |
1208 | case CTFParser.LONGTOK: | |
1209 | case CTFParser.SHORTTOK: | |
1210 | case CTFParser.SIGNEDTOK: | |
1211 | case CTFParser.UNSIGNEDTOK: | |
1212 | case CTFParser.CHARTOK: | |
1213 | case CTFParser.DOUBLETOK: | |
1214 | case CTFParser.VOIDTOK: | |
1215 | case CTFParser.BOOLTOK: | |
1216 | case CTFParser.COMPLEXTOK: | |
1217 | case CTFParser.IMAGINARYTOK: | |
1218 | declaration = parseTypeDeclaration(typeSpecifierList, pointerList); | |
1219 | break; | |
1220 | default: | |
1221 | childTypeError(firstChild); | |
1222 | } | |
1223 | ||
866e5b51 FC |
1224 | return declaration; |
1225 | } | |
1226 | ||
32ede2ec MK |
1227 | private IDeclaration parseFloat(CommonTree floatingPoint) |
1228 | throws ParseException { | |
53047a66 MK |
1229 | |
1230 | List<CommonTree> children = floatingPoint.getChildren(); | |
1231 | ||
1232 | /* | |
1233 | * If the integer has no attributes, then it is missing the size | |
1234 | * attribute which is required | |
1235 | */ | |
1236 | if (children == null) { | |
1237 | throw new ParseException("float: missing size attribute"); //$NON-NLS-1$ | |
1238 | } | |
1239 | ||
1240 | /* The return value */ | |
1241 | FloatDeclaration floatDeclaration = null; | |
1242 | ByteOrder byteOrder = trace.getByteOrder(); | |
1243 | long alignment = 0; | |
53047a66 MK |
1244 | int exponent = 8; |
1245 | int mantissa = 24; | |
1246 | ||
53047a66 MK |
1247 | /* Iterate on all integer children */ |
1248 | for (CommonTree child : children) { | |
1249 | switch (child.getType()) { | |
1250 | case CTFParser.CTF_EXPRESSION_VAL: | |
1251 | /* | |
1252 | * An assignment expression must have 2 children, left and right | |
1253 | */ | |
53047a66 MK |
1254 | |
1255 | CommonTree leftNode = (CommonTree) child.getChild(0); | |
53047a66 | 1256 | CommonTree rightNode = (CommonTree) child.getChild(1); |
53047a66 MK |
1257 | |
1258 | List<CommonTree> leftStrings = leftNode.getChildren(); | |
53047a66 | 1259 | |
4311ac8b | 1260 | if (!isAnyUnaryString(leftStrings.get(0))) { |
53047a66 MK |
1261 | throw new ParseException( |
1262 | "Left side of ctf expression must be a string"); //$NON-NLS-1$ | |
1263 | } | |
1264 | String left = concatenateUnaryStrings(leftStrings); | |
1265 | ||
fafc36a7 | 1266 | if (left.equals(MetadataStrings.EXP_DIG)) { |
53047a66 | 1267 | exponent = (int) parseUnaryInteger((CommonTree) rightNode.getChild(0)); |
fafc36a7 | 1268 | } else if (left.equals(MetadataStrings.BYTE_ORDER)) { |
53047a66 | 1269 | byteOrder = getByteOrder(rightNode); |
fafc36a7 | 1270 | } else if (left.equals(MetadataStrings.MANT_DIG)) { |
53047a66 | 1271 | mantissa = (int) parseUnaryInteger((CommonTree) rightNode.getChild(0)); |
fafc36a7 | 1272 | } else if (left.equals(MetadataStrings.ALIGN)) { |
53047a66 MK |
1273 | alignment = getAlignment(rightNode); |
1274 | } else { | |
1275 | throw new ParseException("Float: unknown attribute " + left); //$NON-NLS-1$ | |
1276 | } | |
1277 | ||
1278 | break; | |
1279 | default: | |
1280 | childTypeError(child); | |
1281 | break; | |
1282 | } | |
1283 | } | |
1284 | int size = mantissa + exponent; | |
1285 | if (size == 0) { | |
1286 | throw new ParseException("Float missing size attribute"); //$NON-NLS-1$ | |
1287 | } | |
1288 | ||
1289 | if (alignment == 0) { | |
1290 | if ((size % 8) == 0) { | |
1291 | alignment = 1; | |
1292 | } else { | |
1293 | alignment = 8; | |
1294 | } | |
1295 | } | |
1296 | ||
07002e0a | 1297 | floatDeclaration = new FloatDeclaration(exponent, mantissa, byteOrder, alignment); |
53047a66 | 1298 | |
53047a66 MK |
1299 | return floatDeclaration; |
1300 | ||
1301 | } | |
1302 | ||
866e5b51 FC |
1303 | /** |
1304 | * Parses a type specifier list as a user-declared type. | |
1305 | * | |
1306 | * @param typeSpecifierList | |
1307 | * A TYPE_SPECIFIER_LIST node containing a user-declared type. | |
1308 | * @param pointerList | |
1309 | * A list of POINTER nodes that apply to the type specified in | |
1310 | * typeSpecifierList. | |
1311 | * @return The corresponding declaration. | |
1312 | * @throws ParseException | |
1313 | * If the type does not exist (has not been found). | |
1314 | */ | |
1315 | private IDeclaration parseTypeDeclaration(CommonTree typeSpecifierList, | |
1316 | List<CommonTree> pointerList) throws ParseException { | |
1317 | /* Create the string representation of the type declaration */ | |
1318 | String typeStringRepresentation = createTypeDeclarationString( | |
1319 | typeSpecifierList, pointerList); | |
1320 | ||
1321 | /* Use the string representation to search the type in the current scope */ | |
1322 | IDeclaration decl = getCurrentScope().rlookupType( | |
1323 | typeStringRepresentation); | |
1324 | ||
1325 | if (decl == null) { | |
1326 | throw new ParseException("Type " + typeStringRepresentation //$NON-NLS-1$ | |
1327 | + " has not been defined."); //$NON-NLS-1$ | |
1328 | } | |
1329 | ||
1330 | return decl; | |
1331 | } | |
1332 | ||
1333 | /** | |
1334 | * Parses an integer declaration node. | |
1335 | * | |
1336 | * @param integer | |
1337 | * An INTEGER node. | |
1338 | * @return The corresponding integer declaration. | |
1339 | * @throws ParseException | |
1340 | */ | |
1341 | private IntegerDeclaration parseInteger(CommonTree integer) | |
1342 | throws ParseException { | |
866e5b51 FC |
1343 | |
1344 | List<CommonTree> children = integer.getChildren(); | |
1345 | ||
1346 | /* | |
1347 | * If the integer has no attributes, then it is missing the size | |
1348 | * attribute which is required | |
1349 | */ | |
1350 | if (children == null) { | |
1351 | throw new ParseException("integer: missing size attribute"); //$NON-NLS-1$ | |
1352 | } | |
1353 | ||
1354 | /* The return value */ | |
1355 | IntegerDeclaration integerDeclaration = null; | |
1356 | boolean signed = false; | |
1357 | ByteOrder byteOrder = trace.getByteOrder(); | |
1358 | long size = 0; | |
1359 | long alignment = 0; | |
1360 | int base = 10; | |
284fdee8 | 1361 | String clock = null; |
866e5b51 FC |
1362 | |
1363 | Encoding encoding = Encoding.NONE; | |
1364 | ||
1365 | /* Iterate on all integer children */ | |
1366 | for (CommonTree child : children) { | |
1367 | switch (child.getType()) { | |
1368 | case CTFParser.CTF_EXPRESSION_VAL: | |
1369 | /* | |
1370 | * An assignment expression must have 2 children, left and right | |
1371 | */ | |
866e5b51 FC |
1372 | |
1373 | CommonTree leftNode = (CommonTree) child.getChild(0); | |
866e5b51 | 1374 | CommonTree rightNode = (CommonTree) child.getChild(1); |
866e5b51 FC |
1375 | |
1376 | List<CommonTree> leftStrings = leftNode.getChildren(); | |
866e5b51 | 1377 | |
4311ac8b | 1378 | if (!isAnyUnaryString(leftStrings.get(0))) { |
866e5b51 FC |
1379 | throw new ParseException( |
1380 | "Left side of ctf expression must be a string"); //$NON-NLS-1$ | |
1381 | } | |
1382 | String left = concatenateUnaryStrings(leftStrings); | |
1383 | ||
1384 | if (left.equals("signed")) { //$NON-NLS-1$ | |
1385 | signed = getSigned(rightNode); | |
fafc36a7 | 1386 | } else if (left.equals(MetadataStrings.BYTE_ORDER)) { |
866e5b51 FC |
1387 | byteOrder = getByteOrder(rightNode); |
1388 | } else if (left.equals("size")) { //$NON-NLS-1$ | |
1389 | size = getSize(rightNode); | |
fafc36a7 | 1390 | } else if (left.equals(MetadataStrings.ALIGN)) { |
866e5b51 FC |
1391 | alignment = getAlignment(rightNode); |
1392 | } else if (left.equals("base")) { //$NON-NLS-1$ | |
1393 | base = getBase(rightNode); | |
1394 | } else if (left.equals("encoding")) { //$NON-NLS-1$ | |
1395 | encoding = getEncoding(rightNode); | |
1396 | } else if (left.equals("map")) { //$NON-NLS-1$ | |
1397 | clock = getClock(rightNode); | |
1398 | } else { | |
4311ac8b | 1399 | Activator.log(IStatus.WARNING, Messages.IOStructGen_UnknownIntegerAttributeWarning + " " + left); //$NON-NLS-1$ |
866e5b51 FC |
1400 | } |
1401 | ||
1402 | break; | |
1403 | default: | |
1404 | childTypeError(child); | |
1405 | break; | |
1406 | } | |
1407 | } | |
1408 | ||
1409 | if (size == 0) { | |
1410 | throw new ParseException("Integer missing size attribute"); //$NON-NLS-1$ | |
1411 | } | |
1412 | ||
1413 | if (alignment == 0) { | |
1414 | if ((size % 8) == 0) { | |
1415 | alignment = 1; | |
1416 | } else { | |
1417 | alignment = 8; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | integerDeclaration = new IntegerDeclaration((int) size, signed, base, | |
fd74e6c1 | 1422 | byteOrder, encoding, clock, alignment); |
866e5b51 | 1423 | |
866e5b51 FC |
1424 | return integerDeclaration; |
1425 | } | |
1426 | ||
284fdee8 | 1427 | private static String getClock(CommonTree rightNode) { |
866e5b51 FC |
1428 | return rightNode.getChild(1).getChild(0).getChild(0).getText(); |
1429 | } | |
1430 | ||
1431 | private static StringDeclaration parseString(CommonTree string) | |
1432 | throws ParseException { | |
866e5b51 FC |
1433 | |
1434 | List<CommonTree> children = string.getChildren(); | |
1435 | StringDeclaration stringDeclaration = null; | |
1436 | ||
1437 | if (children == null) { | |
1438 | stringDeclaration = new StringDeclaration(); | |
1439 | } else { | |
1440 | Encoding encoding = Encoding.UTF8; | |
1441 | for (CommonTree child : children) { | |
1442 | switch (child.getType()) { | |
1443 | case CTFParser.CTF_EXPRESSION_VAL: | |
1444 | /* | |
1445 | * An assignment expression must have 2 children, left and | |
1446 | * right | |
1447 | */ | |
866e5b51 FC |
1448 | |
1449 | CommonTree leftNode = (CommonTree) child.getChild(0); | |
866e5b51 | 1450 | CommonTree rightNode = (CommonTree) child.getChild(1); |
866e5b51 FC |
1451 | |
1452 | List<CommonTree> leftStrings = leftNode.getChildren(); | |
866e5b51 | 1453 | |
4311ac8b | 1454 | if (!isAnyUnaryString(leftStrings.get(0))) { |
866e5b51 FC |
1455 | throw new ParseException( |
1456 | "Left side of ctf expression must be a string"); //$NON-NLS-1$ | |
1457 | } | |
1458 | String left = concatenateUnaryStrings(leftStrings); | |
1459 | ||
1460 | if (left.equals("encoding")) { //$NON-NLS-1$ | |
1461 | encoding = getEncoding(rightNode); | |
1462 | } else { | |
1463 | throw new ParseException("String: unknown attribute " //$NON-NLS-1$ | |
1464 | + left); | |
1465 | } | |
1466 | ||
1467 | break; | |
1468 | default: | |
1469 | childTypeError(child); | |
1470 | break; | |
1471 | } | |
1472 | } | |
1473 | ||
1474 | stringDeclaration = new StringDeclaration(encoding); | |
1475 | } | |
1476 | ||
1477 | return stringDeclaration; | |
1478 | } | |
1479 | ||
1480 | /** | |
1481 | * Parses a struct declaration and returns the corresponding declaration. | |
1482 | * | |
1483 | * @param struct | |
1484 | * An STRUCT node. | |
1485 | * @return The corresponding struct declaration. | |
1486 | * @throws ParseException | |
1487 | */ | |
1488 | private StructDeclaration parseStruct(CommonTree struct) | |
1489 | throws ParseException { | |
866e5b51 FC |
1490 | |
1491 | List<CommonTree> children = struct.getChildren(); | |
866e5b51 FC |
1492 | |
1493 | /* The return value */ | |
1494 | StructDeclaration structDeclaration = null; | |
1495 | ||
1496 | /* Name */ | |
1497 | String structName = null; | |
1498 | boolean hasName = false; | |
1499 | ||
1500 | /* Body */ | |
1501 | CommonTree structBody = null; | |
1502 | boolean hasBody = false; | |
1503 | ||
1504 | /* Align */ | |
1505 | long structAlign = 0; | |
1506 | ||
1507 | /* Loop on all children and identify what we have to work with. */ | |
1508 | for (CommonTree child : children) { | |
1509 | switch (child.getType()) { | |
1510 | case CTFParser.STRUCT_NAME: { | |
1511 | hasName = true; | |
1512 | ||
72dbc4ac | 1513 | CommonTree structNameIdentifier = (CommonTree) child.getChild(0); |
866e5b51 | 1514 | |
866e5b51 FC |
1515 | structName = structNameIdentifier.getText(); |
1516 | ||
1517 | break; | |
1518 | } | |
1519 | case CTFParser.STRUCT_BODY: { | |
1520 | hasBody = true; | |
1521 | ||
1522 | structBody = child; | |
1523 | ||
1524 | break; | |
1525 | } | |
1526 | case CTFParser.ALIGN: { | |
72dbc4ac | 1527 | CommonTree structAlignExpression = (CommonTree) child.getChild(0); |
866e5b51 FC |
1528 | |
1529 | structAlign = getAlignment(structAlignExpression); | |
1530 | ||
1531 | break; | |
1532 | } | |
1533 | default: | |
1534 | childTypeError(child); | |
1535 | ||
1536 | break; | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | /* | |
1541 | * If a struct has just a body and no name (just like the song, | |
1542 | * "A Struct With No Name" by America (sorry for that...)), it's a | |
1543 | * definition of a new type, so we create the type declaration and | |
1544 | * return it. We can't add it to the declaration scope since there is no | |
1545 | * name, but that's what we want because it won't be possible to use it | |
1546 | * again to declare another field. | |
1547 | * | |
1548 | * If it has just a name, we look it up in the declaration scope and | |
1549 | * return the associated declaration. If it is not found in the | |
1550 | * declaration scope, it means that a struct with that name has not been | |
1551 | * declared, which is an error. | |
1552 | * | |
1553 | * If it has both, then we create the type declaration and register it | |
1554 | * to the current scope. | |
1555 | * | |
1556 | * If it has none, then what are we doing here ? | |
1557 | */ | |
1558 | if (hasBody) { | |
1559 | /* | |
1560 | * If struct has a name, check if already defined in the current | |
1561 | * scope. | |
1562 | */ | |
1563 | if (hasName && (getCurrentScope().lookupStruct(structName) != null)) { | |
1564 | throw new ParseException("struct " + structName //$NON-NLS-1$ | |
1565 | + " already defined."); //$NON-NLS-1$ | |
1566 | } | |
866e5b51 FC |
1567 | /* Create the declaration */ |
1568 | structDeclaration = new StructDeclaration(structAlign); | |
1569 | ||
1570 | /* Parse the body */ | |
1571 | parseStructBody(structBody, structDeclaration); | |
1572 | ||
1573 | /* If struct has name, add it to the current scope. */ | |
1574 | if (hasName) { | |
1575 | getCurrentScope().registerStruct(structName, structDeclaration); | |
1576 | } | |
1577 | } else /* !hasBody */{ | |
1578 | if (hasName) { | |
1579 | /* Name and !body */ | |
1580 | ||
1581 | /* Lookup the name in the current scope. */ | |
1582 | structDeclaration = getCurrentScope().rlookupStruct(structName); | |
1583 | ||
1584 | /* | |
1585 | * If not found, it means that a struct with such name has not | |
1586 | * been defined | |
1587 | */ | |
1588 | if (structDeclaration == null) { | |
1589 | throw new ParseException("struct " + structName //$NON-NLS-1$ | |
1590 | + " is not defined"); //$NON-NLS-1$ | |
1591 | } | |
1592 | } else { | |
1593 | /* !Name and !body */ | |
1594 | ||
1595 | /* We can't do anything with that. */ | |
1596 | throw new ParseException("struct with no name and no body"); //$NON-NLS-1$ | |
1597 | } | |
1598 | } | |
1599 | ||
866e5b51 FC |
1600 | return structDeclaration; |
1601 | } | |
1602 | ||
1603 | /** | |
1604 | * Parses a struct body, adding the fields to specified structure | |
1605 | * declaration. | |
1606 | * | |
1607 | * @param structBody | |
1608 | * A STRUCT_BODY node. | |
1609 | * @param structDeclaration | |
1610 | * The struct declaration. | |
1611 | * @throws ParseException | |
1612 | */ | |
1613 | private void parseStructBody(CommonTree structBody, | |
1614 | StructDeclaration structDeclaration) throws ParseException { | |
866e5b51 FC |
1615 | |
1616 | List<CommonTree> structDeclarations = structBody.getChildren(); | |
1617 | ||
1618 | /* | |
1619 | * If structDeclaration is null, structBody has no children and the | |
1620 | * struct body is empty. | |
1621 | */ | |
1622 | if (structDeclarations != null) { | |
1623 | pushScope(); | |
1624 | ||
1625 | for (CommonTree declarationNode : structDeclarations) { | |
1626 | switch (declarationNode.getType()) { | |
1627 | case CTFParser.TYPEALIAS: | |
1628 | parseTypealias(declarationNode); | |
1629 | break; | |
1630 | case CTFParser.TYPEDEF: | |
1631 | parseTypedef(declarationNode); | |
1632 | break; | |
1633 | case CTFParser.SV_DECLARATION: | |
1634 | parseStructDeclaration(declarationNode, structDeclaration); | |
1635 | break; | |
1636 | default: | |
1637 | childTypeError(declarationNode); | |
1638 | break; | |
1639 | } | |
1640 | } | |
1641 | popScope(); | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | /** | |
1646 | * Parses a declaration found in a struct. | |
1647 | * | |
1648 | * @param declaration | |
1649 | * A SV_DECLARATION node. | |
1650 | * @param struct | |
1651 | * A struct declaration. (I know, little name clash here...) | |
1652 | * @throws ParseException | |
1653 | */ | |
1654 | private void parseStructDeclaration(CommonTree declaration, | |
1655 | StructDeclaration struct) throws ParseException { | |
866e5b51 | 1656 | |
866e5b51 FC |
1657 | |
1658 | /* Get the type specifier list node */ | |
72dbc4ac | 1659 | CommonTree typeSpecifierListNode = (CommonTree) declaration.getFirstChildWithType(CTFParser.TYPE_SPECIFIER_LIST); |
866e5b51 FC |
1660 | |
1661 | /* Get the type declarator list node */ | |
72dbc4ac | 1662 | CommonTree typeDeclaratorListNode = (CommonTree) declaration.getFirstChildWithType(CTFParser.TYPE_DECLARATOR_LIST); |
866e5b51 FC |
1663 | |
1664 | /* Get the type declarator list */ | |
72dbc4ac | 1665 | List<CommonTree> typeDeclaratorList = typeDeclaratorListNode.getChildren(); |
866e5b51 FC |
1666 | |
1667 | /* | |
1668 | * For each type declarator, parse the declaration and add a field to | |
1669 | * the struct | |
1670 | */ | |
1671 | for (CommonTree typeDeclaratorNode : typeDeclaratorList) { | |
866e5b51 FC |
1672 | |
1673 | StringBuilder identifierSB = new StringBuilder(); | |
1674 | ||
1675 | IDeclaration decl = parseTypeDeclarator(typeDeclaratorNode, | |
1676 | typeSpecifierListNode, identifierSB); | |
1677 | String fieldName = identifierSB.toString(); | |
866e5b51 FC |
1678 | |
1679 | if (struct.hasField(fieldName)) { | |
1680 | throw new ParseException("struct: duplicate field " //$NON-NLS-1$ | |
1681 | + fieldName); | |
1682 | } | |
1683 | ||
1684 | struct.addField(fieldName, decl); | |
1685 | ||
1686 | } | |
1687 | } | |
1688 | ||
1689 | /** | |
1690 | * Parses an enum declaration and returns the corresponding declaration. | |
1691 | * | |
0594c61c | 1692 | * @param theEnum |
866e5b51 FC |
1693 | * An ENUM node. |
1694 | * @return The corresponding enum declaration. | |
1695 | * @throws ParseException | |
1696 | */ | |
0594c61c | 1697 | private EnumDeclaration parseEnum(CommonTree theEnum) throws ParseException { |
866e5b51 | 1698 | |
0594c61c | 1699 | List<CommonTree> children = theEnum.getChildren(); |
866e5b51 FC |
1700 | |
1701 | /* The return value */ | |
1702 | EnumDeclaration enumDeclaration = null; | |
1703 | ||
1704 | /* Name */ | |
1705 | String enumName = null; | |
1706 | ||
1707 | /* Body */ | |
1708 | CommonTree enumBody = null; | |
1709 | ||
1710 | /* Container type */ | |
1711 | IntegerDeclaration containerTypeDeclaration = null; | |
1712 | ||
1713 | /* Loop on all children and identify what we have to work with. */ | |
1714 | for (CommonTree child : children) { | |
1715 | switch (child.getType()) { | |
1716 | case CTFParser.ENUM_NAME: { | |
866e5b51 | 1717 | CommonTree enumNameIdentifier = (CommonTree) child.getChild(0); |
866e5b51 | 1718 | enumName = enumNameIdentifier.getText(); |
866e5b51 FC |
1719 | break; |
1720 | } | |
1721 | case CTFParser.ENUM_BODY: { | |
866e5b51 | 1722 | enumBody = child; |
866e5b51 FC |
1723 | break; |
1724 | } | |
1725 | case CTFParser.ENUM_CONTAINER_TYPE: { | |
866e5b51 | 1726 | containerTypeDeclaration = parseEnumContainerType(child); |
866e5b51 FC |
1727 | break; |
1728 | } | |
1729 | default: | |
1730 | childTypeError(child); | |
1731 | break; | |
1732 | } | |
1733 | } | |
1734 | ||
1735 | /* | |
1736 | * If the container type has not been defined explicitly, we assume it | |
1737 | * is "int". | |
1738 | */ | |
1739 | if (containerTypeDeclaration == null) { | |
32ede2ec MK |
1740 | IDeclaration enumDecl; |
1741 | /* | |
1742 | * it could be because the enum was already declared. | |
1743 | */ | |
1744 | if (enumName != null) { | |
1745 | enumDecl = getCurrentScope().rlookupEnum(enumName); | |
1746 | if (enumDecl != null) { | |
1747 | return (EnumDeclaration) enumDecl; | |
1748 | } | |
1749 | } | |
1750 | ||
866e5b51 FC |
1751 | IDeclaration decl = getCurrentScope().rlookupType("int"); //$NON-NLS-1$ |
1752 | ||
1753 | if (decl == null) { | |
1754 | throw new ParseException( | |
1755 | "enum container type implicit and type int not defined"); //$NON-NLS-1$ | |
1756 | } else if (!(decl instanceof IntegerDeclaration)) { | |
1757 | throw new ParseException( | |
1758 | "enum container type implicit and type int not an integer"); //$NON-NLS-1$ | |
1759 | } | |
1760 | ||
1761 | containerTypeDeclaration = (IntegerDeclaration) decl; | |
1762 | } | |
1763 | ||
1764 | /* | |
1765 | * If it has a body, it's a new declaration, otherwise it's a reference | |
1766 | * to an existing declaration. Same logic as struct. | |
1767 | */ | |
1768 | if (enumBody != null) { | |
1769 | /* | |
1770 | * If enum has a name, check if already defined in the current | |
1771 | * scope. | |
1772 | */ | |
1773 | if ((enumName != null) | |
1774 | && (getCurrentScope().lookupEnum(enumName) != null)) { | |
1775 | throw new ParseException("enum " + enumName //$NON-NLS-1$ | |
1776 | + " already defined"); //$NON-NLS-1$ | |
1777 | } | |
1778 | ||
1779 | /* Create the declaration */ | |
1780 | enumDeclaration = new EnumDeclaration(containerTypeDeclaration); | |
1781 | ||
1782 | /* Parse the body */ | |
1783 | parseEnumBody(enumBody, enumDeclaration); | |
1784 | ||
1785 | /* If the enum has name, add it to the current scope. */ | |
1786 | if (enumName != null) { | |
1787 | getCurrentScope().registerEnum(enumName, enumDeclaration); | |
1788 | } | |
1789 | } else { | |
1790 | if (enumName != null) { | |
1791 | /* Name and !body */ | |
1792 | ||
1793 | /* Lookup the name in the current scope. */ | |
1794 | enumDeclaration = getCurrentScope().rlookupEnum(enumName); | |
1795 | ||
1796 | /* | |
1797 | * If not found, it means that an enum with such name has not | |
1798 | * been defined | |
1799 | */ | |
1800 | if (enumDeclaration == null) { | |
1801 | throw new ParseException("enum " + enumName //$NON-NLS-1$ | |
1802 | + " is not defined"); //$NON-NLS-1$ | |
1803 | } | |
1804 | } else { | |
1805 | /* !Name and !body */ | |
1806 | throw new ParseException("enum with no name and no body"); //$NON-NLS-1$ | |
1807 | } | |
1808 | } | |
1809 | ||
1810 | return enumDeclaration; | |
1811 | ||
1812 | } | |
1813 | ||
1814 | /** | |
1815 | * Parses an enum body, adding the enumerators to the specified enum | |
1816 | * declaration. | |
1817 | * | |
1818 | * @param enumBody | |
1819 | * An ENUM_BODY node. | |
1820 | * @param enumDeclaration | |
1821 | * The enum declaration. | |
1822 | * @throws ParseException | |
1823 | */ | |
1824 | private void parseEnumBody(CommonTree enumBody, | |
1825 | EnumDeclaration enumDeclaration) throws ParseException { | |
866e5b51 FC |
1826 | |
1827 | List<CommonTree> enumerators = enumBody.getChildren(); | |
1828 | /* enum body can't be empty (unlike struct). */ | |
866e5b51 FC |
1829 | |
1830 | pushScope(); | |
1831 | ||
1832 | /* | |
1833 | * Start at -1, so that if the first enumrator has no explicit value, it | |
1834 | * will choose 0 | |
1835 | */ | |
1836 | long lastHigh = -1; | |
1837 | ||
1838 | for (CommonTree enumerator : enumerators) { | |
1839 | lastHigh = parseEnumEnumerator(enumerator, enumDeclaration, | |
1840 | lastHigh); | |
1841 | } | |
1842 | ||
1843 | popScope(); | |
1844 | ||
1845 | } | |
1846 | ||
1847 | /** | |
1848 | * Parses an enumerator node and adds an enumerator declaration to an | |
1849 | * enumeration declaration. | |
1850 | * | |
1851 | * The high value of the range of the last enumerator is needed in case the | |
1852 | * current enumerator does not specify its value. | |
1853 | * | |
1854 | * @param enumerator | |
1855 | * An ENUM_ENUMERATOR node. | |
1856 | * @param enumDeclaration | |
1857 | * en enumeration declaration to which will be added the | |
1858 | * enumerator. | |
1859 | * @param lastHigh | |
1860 | * The high value of the range of the last enumerator | |
1861 | * @return The high value of the value range of the current enumerator. | |
1862 | * @throws ParseException | |
1863 | */ | |
1864 | private static long parseEnumEnumerator(CommonTree enumerator, | |
1865 | EnumDeclaration enumDeclaration, long lastHigh) | |
1866 | throws ParseException { | |
866e5b51 FC |
1867 | |
1868 | List<CommonTree> children = enumerator.getChildren(); | |
866e5b51 FC |
1869 | |
1870 | long low = 0, high = 0; | |
1871 | boolean valueSpecified = false; | |
1872 | String label = null; | |
1873 | ||
1874 | for (CommonTree child : children) { | |
4311ac8b | 1875 | if (isAnyUnaryString(child)) { |
866e5b51 FC |
1876 | label = parseUnaryString(child); |
1877 | } else if (child.getType() == CTFParser.ENUM_VALUE) { | |
866e5b51 FC |
1878 | |
1879 | valueSpecified = true; | |
1880 | ||
1881 | low = parseUnaryInteger((CommonTree) child.getChild(0)); | |
1882 | high = low; | |
1883 | } else if (child.getType() == CTFParser.ENUM_VALUE_RANGE) { | |
866e5b51 FC |
1884 | |
1885 | valueSpecified = true; | |
1886 | ||
1887 | low = parseUnaryInteger((CommonTree) child.getChild(0)); | |
1888 | high = parseUnaryInteger((CommonTree) child.getChild(1)); | |
1889 | } else { | |
1890 | childTypeError(child); | |
1891 | } | |
1892 | } | |
1893 | ||
866e5b51 FC |
1894 | if (!valueSpecified) { |
1895 | low = lastHigh + 1; | |
1896 | high = low; | |
1897 | } | |
1898 | ||
1899 | if (low > high) { | |
1900 | throw new ParseException("enum low value greater than high value"); //$NON-NLS-1$ | |
1901 | } | |
1902 | ||
1903 | if (!enumDeclaration.add(low, high, label)) { | |
1904 | throw new ParseException("enum declarator values overlap."); //$NON-NLS-1$ | |
1905 | } | |
1906 | ||
4311ac8b MAL |
1907 | if (valueSpecified && (BigInteger.valueOf(low).compareTo(enumDeclaration.getContainerType().getMinValue()) == -1 || |
1908 | BigInteger.valueOf(high).compareTo(enumDeclaration.getContainerType().getMaxValue()) == 1)) { | |
1909 | throw new ParseException("enum value is not in range"); //$NON-NLS-1$ | |
1910 | } | |
1911 | ||
866e5b51 FC |
1912 | return high; |
1913 | } | |
1914 | ||
1915 | /** | |
1916 | * Parses an enum container type node and returns the corresponding integer | |
1917 | * type. | |
1918 | * | |
1919 | * @param enumContainerType | |
1920 | * An ENUM_CONTAINER_TYPE node. | |
1921 | * @return An integer declaration corresponding to the container type. | |
1922 | * @throws ParseException | |
1923 | * If the type does not parse correctly or if it is not an | |
1924 | * integer type. | |
1925 | */ | |
1926 | private IntegerDeclaration parseEnumContainerType( | |
1927 | CommonTree enumContainerType) throws ParseException { | |
866e5b51 FC |
1928 | |
1929 | /* Get the child, which should be a type specifier list */ | |
72dbc4ac | 1930 | CommonTree typeSpecifierList = (CommonTree) enumContainerType.getChild(0); |
866e5b51 FC |
1931 | |
1932 | /* Parse it and get the corresponding declaration */ | |
1933 | IDeclaration decl = parseTypeSpecifierList(typeSpecifierList, null); | |
1934 | ||
1935 | /* If is is an integer, return it, else throw an error */ | |
1936 | if (decl instanceof IntegerDeclaration) { | |
1937 | return (IntegerDeclaration) decl; | |
1938 | } | |
1939 | throw new ParseException("enum container type must be an integer"); //$NON-NLS-1$ | |
1940 | } | |
1941 | ||
1942 | private VariantDeclaration parseVariant(CommonTree variant) | |
1943 | throws ParseException { | |
866e5b51 FC |
1944 | |
1945 | List<CommonTree> children = variant.getChildren(); | |
1946 | VariantDeclaration variantDeclaration = null; | |
1947 | ||
1948 | boolean hasName = false; | |
1949 | String variantName = null; | |
1950 | ||
1951 | boolean hasBody = false; | |
1952 | CommonTree variantBody = null; | |
1953 | ||
1954 | boolean hasTag = false; | |
1955 | String variantTag = null; | |
1956 | ||
1957 | for (CommonTree child : children) { | |
1958 | switch (child.getType()) { | |
1959 | case CTFParser.VARIANT_NAME: | |
866e5b51 FC |
1960 | |
1961 | hasName = true; | |
1962 | ||
72dbc4ac | 1963 | CommonTree variantNameIdentifier = (CommonTree) child.getChild(0); |
866e5b51 | 1964 | |
866e5b51 FC |
1965 | variantName = variantNameIdentifier.getText(); |
1966 | ||
1967 | break; | |
1968 | case CTFParser.VARIANT_TAG: | |
866e5b51 FC |
1969 | |
1970 | hasTag = true; | |
1971 | ||
72dbc4ac | 1972 | CommonTree variantTagIdentifier = (CommonTree) child.getChild(0); |
866e5b51 | 1973 | |
866e5b51 FC |
1974 | variantTag = variantTagIdentifier.getText(); |
1975 | ||
1976 | break; | |
1977 | case CTFParser.VARIANT_BODY: | |
866e5b51 FC |
1978 | |
1979 | hasBody = true; | |
1980 | ||
1981 | variantBody = child; | |
1982 | ||
1983 | break; | |
1984 | default: | |
1985 | childTypeError(child); | |
1986 | break; | |
1987 | } | |
1988 | } | |
1989 | ||
1990 | if (hasBody) { | |
1991 | /* | |
1992 | * If variant has a name, check if already defined in the current | |
1993 | * scope. | |
1994 | */ | |
1995 | if (hasName | |
1996 | && (getCurrentScope().lookupVariant(variantName) != null)) { | |
1997 | throw new ParseException("variant " + variantName //$NON-NLS-1$ | |
1998 | + " already defined."); //$NON-NLS-1$ | |
1999 | } | |
2000 | ||
2001 | /* Create the declaration */ | |
2002 | variantDeclaration = new VariantDeclaration(); | |
2003 | ||
2004 | /* Parse the body */ | |
2005 | parseVariantBody(variantBody, variantDeclaration); | |
2006 | ||
2007 | /* If variant has name, add it to the current scope. */ | |
2008 | if (hasName) { | |
2009 | getCurrentScope().registerVariant(variantName, | |
2010 | variantDeclaration); | |
2011 | } | |
2012 | } else /* !hasBody */{ | |
2013 | if (hasName) { | |
2014 | /* Name and !body */ | |
2015 | ||
2016 | /* Lookup the name in the current scope. */ | |
2017 | variantDeclaration = getCurrentScope().rlookupVariant( | |
2018 | variantName); | |
2019 | ||
2020 | /* | |
2021 | * If not found, it means that a struct with such name has not | |
2022 | * been defined | |
2023 | */ | |
2024 | if (variantDeclaration == null) { | |
2025 | throw new ParseException("variant " + variantName //$NON-NLS-1$ | |
2026 | + " is not defined"); //$NON-NLS-1$ | |
2027 | } | |
2028 | } else { | |
2029 | /* !Name and !body */ | |
2030 | ||
2031 | /* We can't do anything with that. */ | |
2032 | throw new ParseException("variant with no name and no body"); //$NON-NLS-1$ | |
2033 | } | |
2034 | } | |
2035 | ||
2036 | if (hasTag) { | |
2037 | variantDeclaration.setTag(variantTag); | |
2038 | } | |
2039 | ||
866e5b51 FC |
2040 | return variantDeclaration; |
2041 | } | |
2042 | ||
2043 | private void parseVariantBody(CommonTree variantBody, | |
2044 | VariantDeclaration variantDeclaration) throws ParseException { | |
866e5b51 FC |
2045 | |
2046 | List<CommonTree> variantDeclarations = variantBody.getChildren(); | |
866e5b51 FC |
2047 | |
2048 | pushScope(); | |
2049 | ||
2050 | for (CommonTree declarationNode : variantDeclarations) { | |
2051 | switch (declarationNode.getType()) { | |
2052 | case CTFParser.TYPEALIAS: | |
2053 | parseTypealias(declarationNode); | |
2054 | break; | |
2055 | case CTFParser.TYPEDEF: | |
2056 | parseTypedef(declarationNode); | |
2057 | break; | |
2058 | case CTFParser.SV_DECLARATION: | |
2059 | parseVariantDeclaration(declarationNode, variantDeclaration); | |
2060 | break; | |
2061 | default: | |
2062 | childTypeError(declarationNode); | |
2063 | break; | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | popScope(); | |
2068 | } | |
2069 | ||
2070 | private void parseVariantDeclaration(CommonTree declaration, | |
2071 | VariantDeclaration variant) throws ParseException { | |
866e5b51 | 2072 | |
866e5b51 FC |
2073 | |
2074 | /* Get the type specifier list node */ | |
72dbc4ac | 2075 | CommonTree typeSpecifierListNode = (CommonTree) declaration.getFirstChildWithType(CTFParser.TYPE_SPECIFIER_LIST); |
866e5b51 FC |
2076 | |
2077 | /* Get the type declarator list node */ | |
72dbc4ac | 2078 | CommonTree typeDeclaratorListNode = (CommonTree) declaration.getFirstChildWithType(CTFParser.TYPE_DECLARATOR_LIST); |
866e5b51 FC |
2079 | |
2080 | /* Get the type declarator list */ | |
72dbc4ac | 2081 | List<CommonTree> typeDeclaratorList = typeDeclaratorListNode.getChildren(); |
866e5b51 FC |
2082 | |
2083 | /* | |
2084 | * For each type declarator, parse the declaration and add a field to | |
2085 | * the variant | |
2086 | */ | |
2087 | for (CommonTree typeDeclaratorNode : typeDeclaratorList) { | |
866e5b51 FC |
2088 | |
2089 | StringBuilder identifierSB = new StringBuilder(); | |
2090 | ||
2091 | IDeclaration decl = parseTypeDeclarator(typeDeclaratorNode, | |
2092 | typeSpecifierListNode, identifierSB); | |
2093 | ||
2094 | if (variant.hasField(identifierSB.toString())) { | |
2095 | throw new ParseException("variant: duplicate field " //$NON-NLS-1$ | |
2096 | + identifierSB.toString()); | |
2097 | } | |
2098 | ||
2099 | variant.addField(identifierSB.toString(), decl); | |
2100 | } | |
2101 | } | |
2102 | ||
2103 | /** | |
2104 | * Creates the string representation of a type declaration (type specifier | |
2105 | * list + pointers). | |
2106 | * | |
2107 | * @param typeSpecifierList | |
2108 | * A TYPE_SPECIFIER_LIST node. | |
2109 | * @param pointers | |
2110 | * A list of POINTER nodes. | |
2111 | * @return The string representation. | |
2112 | * @throws ParseException | |
2113 | */ | |
2114 | private static String createTypeDeclarationString( | |
2115 | CommonTree typeSpecifierList, List<CommonTree> pointers) | |
2116 | throws ParseException { | |
2117 | StringBuilder sb = new StringBuilder(); | |
2118 | ||
2119 | createTypeSpecifierListString(typeSpecifierList, sb); | |
2120 | createPointerListString(pointers, sb); | |
2121 | ||
2122 | return sb.toString(); | |
2123 | } | |
2124 | ||
2125 | /** | |
2126 | * Creates the string representation of a list of type specifiers. | |
2127 | * | |
2128 | * @param typeSpecifierList | |
2129 | * A TYPE_SPECIFIER_LIST node. | |
2130 | * @param sb | |
2131 | * A StringBuilder to which will be appended the string. | |
2132 | * @throws ParseException | |
2133 | */ | |
2134 | private static void createTypeSpecifierListString( | |
2135 | CommonTree typeSpecifierList, StringBuilder sb) | |
2136 | throws ParseException { | |
866e5b51 FC |
2137 | |
2138 | List<CommonTree> children = typeSpecifierList.getChildren(); | |
866e5b51 FC |
2139 | |
2140 | boolean firstItem = true; | |
2141 | ||
2142 | for (CommonTree child : children) { | |
2143 | if (!firstItem) { | |
2144 | sb.append(' '); | |
2145 | ||
2146 | } | |
2147 | ||
2148 | firstItem = false; | |
2149 | ||
2150 | /* Append the string that represents this type specifier. */ | |
2151 | createTypeSpecifierString(child, sb); | |
2152 | } | |
2153 | } | |
2154 | ||
2155 | /** | |
2156 | * Creates the string representation of a type specifier. | |
2157 | * | |
2158 | * @param typeSpecifier | |
2159 | * A TYPE_SPECIFIER node. | |
2160 | * @param sb | |
2161 | * A StringBuilder to which will be appended the string. | |
2162 | * @throws ParseException | |
2163 | */ | |
2164 | private static void createTypeSpecifierString(CommonTree typeSpecifier, | |
2165 | StringBuilder sb) throws ParseException { | |
2166 | switch (typeSpecifier.getType()) { | |
2167 | case CTFParser.FLOATTOK: | |
2168 | case CTFParser.INTTOK: | |
2169 | case CTFParser.LONGTOK: | |
2170 | case CTFParser.SHORTTOK: | |
2171 | case CTFParser.SIGNEDTOK: | |
2172 | case CTFParser.UNSIGNEDTOK: | |
2173 | case CTFParser.CHARTOK: | |
2174 | case CTFParser.DOUBLETOK: | |
2175 | case CTFParser.VOIDTOK: | |
2176 | case CTFParser.BOOLTOK: | |
2177 | case CTFParser.COMPLEXTOK: | |
2178 | case CTFParser.IMAGINARYTOK: | |
2179 | case CTFParser.CONSTTOK: | |
2180 | case CTFParser.IDENTIFIER: | |
2181 | sb.append(typeSpecifier.getText()); | |
2182 | break; | |
2183 | case CTFParser.STRUCT: { | |
72dbc4ac | 2184 | CommonTree structName = (CommonTree) typeSpecifier.getFirstChildWithType(CTFParser.STRUCT_NAME); |
866e5b51 FC |
2185 | if (structName == null) { |
2186 | throw new ParseException( | |
2187 | "nameless struct found in createTypeSpecifierString"); //$NON-NLS-1$ | |
2188 | } | |
866e5b51 | 2189 | |
72dbc4ac | 2190 | CommonTree structNameIdentifier = (CommonTree) structName.getChild(0); |
866e5b51 FC |
2191 | |
2192 | sb.append(structNameIdentifier.getText()); | |
2193 | break; | |
2194 | } | |
2195 | case CTFParser.VARIANT: { | |
72dbc4ac | 2196 | CommonTree variantName = (CommonTree) typeSpecifier.getFirstChildWithType(CTFParser.VARIANT_NAME); |
866e5b51 FC |
2197 | if (variantName == null) { |
2198 | throw new ParseException( | |
2199 | "nameless variant found in createTypeSpecifierString"); //$NON-NLS-1$ | |
2200 | } | |
866e5b51 | 2201 | |
72dbc4ac | 2202 | CommonTree variantNameIdentifier = (CommonTree) variantName.getChild(0); |
866e5b51 FC |
2203 | |
2204 | sb.append(variantNameIdentifier.getText()); | |
2205 | break; | |
2206 | } | |
2207 | case CTFParser.ENUM: { | |
72dbc4ac | 2208 | CommonTree enumName = (CommonTree) typeSpecifier.getFirstChildWithType(CTFParser.ENUM_NAME); |
866e5b51 FC |
2209 | if (enumName == null) { |
2210 | throw new ParseException( | |
2211 | "nameless enum found in createTypeSpecifierString"); //$NON-NLS-1$ | |
2212 | } | |
866e5b51 FC |
2213 | |
2214 | CommonTree enumNameIdentifier = (CommonTree) enumName.getChild(0); | |
866e5b51 FC |
2215 | |
2216 | sb.append(enumNameIdentifier.getText()); | |
2217 | break; | |
2218 | } | |
2219 | case CTFParser.FLOATING_POINT: | |
2220 | case CTFParser.INTEGER: | |
2221 | case CTFParser.STRING: | |
2222 | throw new ParseException( | |
2223 | "CTF type found in createTypeSpecifierString"); //$NON-NLS-1$ | |
866e5b51 FC |
2224 | default: |
2225 | childTypeError(typeSpecifier); | |
2226 | break; | |
2227 | } | |
2228 | } | |
2229 | ||
2230 | /** | |
2231 | * Creates the string representation of a list of pointers. | |
2232 | * | |
2233 | * @param pointerList | |
2234 | * A list of pointer nodes. If pointerList is null, this function | |
2235 | * does nothing. | |
2236 | * @param sb | |
2237 | * A stringbuilder to which will be appended the string. | |
2238 | */ | |
2239 | private static void createPointerListString(List<CommonTree> pointerList, | |
2240 | StringBuilder sb) { | |
2241 | if (pointerList == null) { | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | for (CommonTree pointer : pointerList) { | |
866e5b51 FC |
2246 | |
2247 | sb.append(" *"); //$NON-NLS-1$ | |
2248 | if (pointer.getChildCount() > 0) { | |
866e5b51 FC |
2249 | |
2250 | sb.append(" const"); //$NON-NLS-1$ | |
2251 | } | |
2252 | } | |
2253 | } | |
2254 | ||
866e5b51 FC |
2255 | /** |
2256 | * @param node | |
2257 | * The node to check. | |
2258 | * @return True if the given node is an unary string. | |
2259 | */ | |
2260 | private static boolean isUnaryString(CommonTree node) { | |
4311ac8b MAL |
2261 | return ((node.getType() == CTFParser.UNARY_EXPRESSION_STRING)); |
2262 | } | |
2263 | ||
2264 | /** | |
2265 | * @param node | |
2266 | * The node to check. | |
2267 | * @return True if the given node is any type of unary string (no quotes, quotes, etc). | |
2268 | */ | |
2269 | private static boolean isAnyUnaryString(CommonTree node) { | |
72dbc4ac MK |
2270 | return ((node.getType() == CTFParser.UNARY_EXPRESSION_STRING) || |
2271 | (node.getType() == CTFParser.UNARY_EXPRESSION_STRING_QUOTES)); | |
866e5b51 FC |
2272 | } |
2273 | ||
2274 | /** | |
2275 | * @param node | |
2276 | * The node to check. | |
2277 | * @return True if the given node is an unary integer. | |
2278 | */ | |
2279 | private static boolean isUnaryInteger(CommonTree node) { | |
72dbc4ac MK |
2280 | return ((node.getType() == CTFParser.UNARY_EXPRESSION_DEC) || |
2281 | (node.getType() == CTFParser.UNARY_EXPRESSION_HEX) || | |
2282 | (node.getType() == CTFParser.UNARY_EXPRESSION_OCT)); | |
866e5b51 FC |
2283 | } |
2284 | ||
2285 | /** | |
2286 | * Parses a unary string node and return the string value. | |
2287 | * | |
2288 | * @param unaryString | |
2289 | * The unary string node to parse (type UNARY_EXPRESSION_STRING | |
2290 | * or UNARY_EXPRESSION_STRING_QUOTES). | |
2291 | * @return The string value. | |
2292 | */ | |
2293 | /* | |
2294 | * It would be really nice to remove the quotes earlier, such as in the | |
2295 | * parser. | |
2296 | */ | |
2297 | private static String parseUnaryString(CommonTree unaryString) { | |
866e5b51 | 2298 | |
866e5b51 | 2299 | CommonTree value = (CommonTree) unaryString.getChild(0); |
866e5b51 FC |
2300 | String strval = value.getText(); |
2301 | ||
2302 | /* Remove quotes */ | |
2303 | if (unaryString.getType() == CTFParser.UNARY_EXPRESSION_STRING_QUOTES) { | |
2304 | strval = strval.substring(1, strval.length() - 1); | |
2305 | } | |
2306 | ||
2307 | return strval; | |
2308 | } | |
2309 | ||
2310 | /** | |
2311 | * Parses an unary integer (dec, hex or oct). | |
2312 | * | |
2313 | * @param unaryInteger | |
2314 | * An unary integer node. | |
2315 | * @return The integer value. | |
a94410d9 | 2316 | * @throws CTFReaderException |
866e5b51 | 2317 | */ |
a94410d9 | 2318 | private static long parseUnaryInteger(CommonTree unaryInteger) throws ParseException { |
866e5b51 FC |
2319 | |
2320 | List<CommonTree> children = unaryInteger.getChildren(); | |
2321 | CommonTree value = children.get(0); | |
2322 | String strval = value.getText(); | |
2323 | ||
2324 | long intval; | |
a94410d9 MK |
2325 | try { |
2326 | if (unaryInteger.getType() == CTFParser.UNARY_EXPRESSION_DEC) { | |
2327 | intval = Long.parseLong(strval, 10); | |
2328 | } else if (unaryInteger.getType() == CTFParser.UNARY_EXPRESSION_HEX) { | |
2329 | intval = Long.parseLong(strval, 0x10); | |
2330 | } else { /* unaryInteger.getType() == CTFParser.UNARY_EXPRESSION_OCT */ | |
2331 | intval = Long.parseLong(strval, 010); // 010 == 0x08 == 8 | |
2332 | } | |
2333 | } catch (NumberFormatException e) { | |
4311ac8b | 2334 | throw new ParseException("Invalid integer format: " + strval); //$NON-NLS-1$ |
866e5b51 | 2335 | } |
4311ac8b | 2336 | |
866e5b51 FC |
2337 | /* The rest of children are sign */ |
2338 | if ((children.size() % 2) == 0) { | |
2339 | return -intval; | |
2340 | } | |
2341 | return intval; | |
2342 | } | |
2343 | ||
2344 | private static long getMajorOrMinor(CommonTree rightNode) | |
2345 | throws ParseException { | |
866e5b51 FC |
2346 | |
2347 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2348 | ||
2349 | if (isUnaryInteger(firstChild)) { | |
2350 | if (rightNode.getChildCount() > 1) { | |
2351 | throw new ParseException("Invalid value for major/minor"); //$NON-NLS-1$ | |
2352 | } | |
2353 | ||
2354 | long m = parseUnaryInteger(firstChild); | |
2355 | ||
2356 | if (m < 0) { | |
2357 | throw new ParseException("Invalid value for major/minor"); //$NON-NLS-1$ | |
2358 | } | |
2359 | ||
2360 | return m; | |
2361 | } | |
2362 | throw new ParseException("Invalid value for major/minor"); //$NON-NLS-1$ | |
2363 | } | |
2364 | ||
2365 | private static UUID getUUID(CommonTree rightNode) throws ParseException { | |
866e5b51 FC |
2366 | |
2367 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2368 | ||
4311ac8b | 2369 | if (isAnyUnaryString(firstChild)) { |
866e5b51 FC |
2370 | if (rightNode.getChildCount() > 1) { |
2371 | throw new ParseException("Invalid value for UUID"); //$NON-NLS-1$ | |
2372 | } | |
2373 | ||
2374 | String uuidstr = parseUnaryString(firstChild); | |
2375 | ||
2376 | try { | |
0594c61c | 2377 | return UUID.fromString(uuidstr); |
866e5b51 FC |
2378 | } catch (IllegalArgumentException e) { |
2379 | throw new ParseException("Invalid format for UUID"); //$NON-NLS-1$ | |
2380 | } | |
2381 | } | |
2382 | throw new ParseException("Invalid value for UUID"); //$NON-NLS-1$ | |
2383 | } | |
2384 | ||
2385 | /** | |
2386 | * Gets the value of a "signed" integer attribute. | |
2387 | * | |
2388 | * @param rightNode | |
2389 | * A CTF_RIGHT node. | |
2390 | * @return The "signed" value as a boolean. | |
2391 | * @throws ParseException | |
2392 | */ | |
2393 | private static boolean getSigned(CommonTree rightNode) | |
2394 | throws ParseException { | |
866e5b51 FC |
2395 | |
2396 | boolean ret = false; | |
2397 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2398 | ||
2399 | if (isUnaryString(firstChild)) { | |
2400 | String strval = concatenateUnaryStrings(rightNode.getChildren()); | |
2401 | ||
fafc36a7 AM |
2402 | if (strval.equals(MetadataStrings.TRUE) |
2403 | || strval.equals(MetadataStrings.TRUE2)) { | |
866e5b51 | 2404 | ret = true; |
fafc36a7 AM |
2405 | } else if (strval.equals(MetadataStrings.FALSE) |
2406 | || strval.equals(MetadataStrings.FALSE2)) { | |
866e5b51 FC |
2407 | ret = false; |
2408 | } else { | |
2409 | throw new ParseException("Invalid boolean value " //$NON-NLS-1$ | |
2410 | + firstChild.getChild(0).getText()); | |
2411 | } | |
2412 | } else if (isUnaryInteger(firstChild)) { | |
2413 | /* Happens if the value is something like "1234.hello" */ | |
2414 | if (rightNode.getChildCount() > 1) { | |
2415 | throw new ParseException("Invalid boolean value"); //$NON-NLS-1$ | |
2416 | } | |
2417 | ||
2418 | long intval = parseUnaryInteger(firstChild); | |
2419 | ||
2420 | if (intval == 1) { | |
2421 | ret = true; | |
2422 | } else if (intval == 0) { | |
2423 | ret = false; | |
2424 | } else { | |
2425 | throw new ParseException("Invalid boolean value " //$NON-NLS-1$ | |
2426 | + firstChild.getChild(0).getText()); | |
2427 | } | |
2428 | } else { | |
2429 | throw new ParseException(); | |
2430 | } | |
2431 | ||
2432 | return ret; | |
2433 | } | |
2434 | ||
2435 | /** | |
2436 | * Gets the value of a "byte_order" integer attribute. | |
2437 | * | |
2438 | * @param rightNode | |
2439 | * A CTF_RIGHT node. | |
2440 | * @return The "byte_order" value. | |
2441 | * @throws ParseException | |
2442 | */ | |
2443 | private ByteOrder getByteOrder(CommonTree rightNode) throws ParseException { | |
866e5b51 FC |
2444 | |
2445 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2446 | ||
2447 | if (isUnaryString(firstChild)) { | |
2448 | String strval = concatenateUnaryStrings(rightNode.getChildren()); | |
2449 | ||
fafc36a7 | 2450 | if (strval.equals(MetadataStrings.LE)) { |
866e5b51 | 2451 | return ByteOrder.LITTLE_ENDIAN; |
fafc36a7 AM |
2452 | } else if (strval.equals(MetadataStrings.BE) |
2453 | || strval.equals(MetadataStrings.NETWORK)) { | |
866e5b51 | 2454 | return ByteOrder.BIG_ENDIAN; |
fafc36a7 | 2455 | } else if (strval.equals(MetadataStrings.NATIVE)) { |
866e5b51 FC |
2456 | return trace.getByteOrder(); |
2457 | } else { | |
2458 | throw new ParseException("Invalid value for byte order"); //$NON-NLS-1$ | |
2459 | } | |
2460 | } | |
2461 | throw new ParseException("Invalid value for byte order"); //$NON-NLS-1$ | |
2462 | } | |
2463 | ||
2464 | /** | |
2465 | * Determines if the given value is a valid alignment value. | |
2466 | * | |
2467 | * @param alignment | |
2468 | * The value to check. | |
2469 | * @return True if it is valid. | |
2470 | */ | |
2471 | private static boolean isValidAlignment(long alignment) { | |
2472 | return !((alignment <= 0) || ((alignment & (alignment - 1)) != 0)); | |
2473 | } | |
2474 | ||
2475 | /** | |
2476 | * Gets the value of a "size" integer attribute. | |
2477 | * | |
2478 | * @param rightNode | |
2479 | * A CTF_RIGHT node. | |
2480 | * @return The "size" value. | |
2481 | * @throws ParseException | |
2482 | */ | |
2483 | private static long getSize(CommonTree rightNode) throws ParseException { | |
866e5b51 FC |
2484 | |
2485 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2486 | ||
2487 | if (isUnaryInteger(firstChild)) { | |
2488 | if (rightNode.getChildCount() > 1) { | |
2489 | throw new ParseException("Invalid value for size"); //$NON-NLS-1$ | |
2490 | } | |
2491 | ||
2492 | long size = parseUnaryInteger(firstChild); | |
2493 | ||
2494 | if (size < 1) { | |
2495 | throw new ParseException("Invalid value for size"); //$NON-NLS-1$ | |
2496 | } | |
2497 | ||
2498 | return size; | |
2499 | } | |
2500 | throw new ParseException("Invalid value for size"); //$NON-NLS-1$ | |
2501 | } | |
2502 | ||
2503 | /** | |
2504 | * Gets the value of a "align" integer or struct attribute. | |
2505 | * | |
2506 | * @param node | |
2507 | * A CTF_RIGHT node or directly an unary integer. | |
2508 | * @return The align value. | |
2509 | * @throws ParseException | |
2510 | */ | |
2511 | private static long getAlignment(CommonTree node) throws ParseException { | |
866e5b51 FC |
2512 | |
2513 | /* | |
2514 | * If a CTF_RIGHT node was passed, call getAlignment with the first | |
2515 | * child | |
2516 | */ | |
2517 | if (node.getType() == CTFParser.CTF_RIGHT) { | |
2518 | if (node.getChildCount() > 1) { | |
2519 | throw new ParseException("Invalid alignment value"); //$NON-NLS-1$ | |
2520 | } | |
2521 | ||
2522 | return getAlignment((CommonTree) node.getChild(0)); | |
2523 | } else if (isUnaryInteger(node)) { | |
2524 | long alignment = parseUnaryInteger(node); | |
2525 | ||
2526 | if (!isValidAlignment(alignment)) { | |
2527 | throw new ParseException("Invalid value for alignment : " //$NON-NLS-1$ | |
2528 | + alignment); | |
2529 | } | |
2530 | ||
2531 | return alignment; | |
2532 | } | |
2533 | throw new ParseException("Invalid value for alignment"); //$NON-NLS-1$ | |
2534 | } | |
2535 | ||
2536 | /** | |
2537 | * Gets the value of a "base" integer attribute. | |
2538 | * | |
2539 | * @param rightNode | |
2540 | * An CTF_RIGHT node. | |
2541 | * @return The "base" value. | |
2542 | * @throws ParseException | |
2543 | */ | |
2544 | private static int getBase(CommonTree rightNode) throws ParseException { | |
866e5b51 FC |
2545 | |
2546 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2547 | ||
2548 | if (isUnaryInteger(firstChild)) { | |
2549 | if (rightNode.getChildCount() > 1) { | |
2550 | throw new ParseException("invalid base value"); //$NON-NLS-1$ | |
2551 | } | |
2552 | ||
2553 | long intval = parseUnaryInteger(firstChild); | |
2554 | if ((intval == 2) || (intval == 8) || (intval == 10) | |
2555 | || (intval == 16)) { | |
2556 | return (int) intval; | |
2557 | } | |
2558 | throw new ParseException("Invalid value for base"); //$NON-NLS-1$ | |
2559 | } else if (isUnaryString(firstChild)) { | |
2560 | String strval = concatenateUnaryStrings(rightNode.getChildren()); | |
2561 | ||
fafc36a7 AM |
2562 | if (strval.equals(MetadataStrings.DECIMAL) |
2563 | || strval.equals(MetadataStrings.DEC) | |
2564 | || strval.equals(MetadataStrings.DEC_CTE) | |
2565 | || strval.equals(MetadataStrings.INT_MOD) | |
2566 | || strval.equals(MetadataStrings.UNSIGNED_CTE)) { | |
866e5b51 | 2567 | return 10; |
fafc36a7 AM |
2568 | } else if (strval.equals(MetadataStrings.HEXADECIMAL) |
2569 | || strval.equals(MetadataStrings.HEX) | |
2570 | || strval.equals(MetadataStrings.X) | |
2571 | || strval.equals(MetadataStrings.X2) | |
2572 | || strval.equals(MetadataStrings.POINTER)) { | |
866e5b51 | 2573 | return 16; |
fafc36a7 AM |
2574 | } else if (strval.equals(MetadataStrings.OCTAL) |
2575 | || strval.equals(MetadataStrings.OCT) | |
2576 | || strval.equals(MetadataStrings.OCTAL_CTE)) { | |
866e5b51 | 2577 | return 8; |
fafc36a7 AM |
2578 | } else if (strval.equals(MetadataStrings.BINARY) |
2579 | || strval.equals(MetadataStrings.BIN)) { | |
866e5b51 FC |
2580 | return 2; |
2581 | } else { | |
2582 | throw new ParseException("Invalid value for base"); //$NON-NLS-1$ | |
2583 | } | |
2584 | } else { | |
2585 | throw new ParseException("invalid value for base"); //$NON-NLS-1$ | |
2586 | } | |
2587 | } | |
2588 | ||
2589 | /** | |
2590 | * Gets the value of an "encoding" integer attribute. | |
2591 | * | |
2592 | * @param rightNode | |
2593 | * A CTF_RIGHT node. | |
2594 | * @return The "encoding" value. | |
2595 | * @throws ParseException | |
2596 | */ | |
2597 | private static Encoding getEncoding(CommonTree rightNode) | |
2598 | throws ParseException { | |
866e5b51 FC |
2599 | |
2600 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2601 | ||
2602 | if (isUnaryString(firstChild)) { | |
2603 | String strval = concatenateUnaryStrings(rightNode.getChildren()); | |
2604 | ||
fafc36a7 | 2605 | if (strval.equals(MetadataStrings.UTF8)) { |
866e5b51 | 2606 | return Encoding.UTF8; |
fafc36a7 | 2607 | } else if (strval.equals(MetadataStrings.ASCII)) { |
866e5b51 | 2608 | return Encoding.ASCII; |
fafc36a7 | 2609 | } else if (strval.equals(MetadataStrings.NONE)) { |
866e5b51 FC |
2610 | return Encoding.NONE; |
2611 | } else { | |
2612 | throw new ParseException("Invalid value for encoding"); //$NON-NLS-1$ | |
2613 | } | |
2614 | } | |
2615 | throw new ParseException("Invalid value for encoding"); //$NON-NLS-1$ | |
2616 | } | |
2617 | ||
2618 | private static long getStreamID(CommonTree rightNode) throws ParseException { | |
866e5b51 FC |
2619 | |
2620 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2621 | ||
2622 | if (isUnaryInteger(firstChild)) { | |
2623 | if (rightNode.getChildCount() > 1) { | |
2624 | throw new ParseException("invalid value for stream id"); //$NON-NLS-1$ | |
2625 | } | |
2626 | ||
2627 | long intval = parseUnaryInteger(firstChild); | |
2628 | ||
2629 | return intval; | |
2630 | } | |
2631 | throw new ParseException("invalid value for stream id"); //$NON-NLS-1$ | |
2632 | } | |
2633 | ||
2634 | private static String getEventName(CommonTree rightNode) | |
2635 | throws ParseException { | |
866e5b51 FC |
2636 | |
2637 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2638 | ||
4311ac8b | 2639 | if (isAnyUnaryString(firstChild)) { |
866e5b51 FC |
2640 | String str = concatenateUnaryStrings(rightNode.getChildren()); |
2641 | ||
2642 | return str; | |
2643 | } | |
2644 | throw new ParseException("invalid value for event name"); //$NON-NLS-1$ | |
2645 | } | |
2646 | ||
2647 | private static long getEventID(CommonTree rightNode) throws ParseException { | |
866e5b51 FC |
2648 | |
2649 | CommonTree firstChild = (CommonTree) rightNode.getChild(0); | |
2650 | ||
2651 | if (isUnaryInteger(firstChild)) { | |
2652 | if (rightNode.getChildCount() > 1) { | |
2653 | throw new ParseException("invalid value for event id"); //$NON-NLS-1$ | |
2654 | } | |
2655 | ||
2656 | long intval = parseUnaryInteger(firstChild); | |
2657 | ||
2658 | return intval; | |
2659 | } | |
2660 | throw new ParseException("invalid value for event id"); //$NON-NLS-1$ | |
2661 | } | |
2662 | ||
2663 | /** | |
2664 | * Concatenates a list of unary strings separated by arrows (->) or dots. | |
2665 | * | |
2666 | * @param strings | |
2667 | * A list, first element being an unary string, subsequent | |
2668 | * elements being ARROW or DOT nodes with unary strings as child. | |
2669 | * @return The string representation of the unary string chain. | |
2670 | */ | |
2671 | private static String concatenateUnaryStrings(List<CommonTree> strings) { | |
866e5b51 FC |
2672 | |
2673 | StringBuilder sb = new StringBuilder(); | |
2674 | ||
2675 | CommonTree first = strings.get(0); | |
2676 | sb.append(parseUnaryString(first)); | |
2677 | ||
2678 | boolean isFirst = true; | |
2679 | ||
2680 | for (CommonTree ref : strings) { | |
2681 | if (isFirst) { | |
2682 | isFirst = false; | |
2683 | continue; | |
2684 | } | |
2685 | ||
866e5b51 FC |
2686 | |
2687 | CommonTree id = (CommonTree) ref.getChild(0); | |
2688 | ||
2689 | if (ref.getType() == CTFParser.ARROW) { | |
2690 | sb.append("->"); //$NON-NLS-1$ | |
2691 | } else { /* DOT */ | |
2692 | sb.append('.'); | |
2693 | } | |
2694 | ||
2695 | sb.append(parseUnaryString(id)); | |
2696 | } | |
2697 | ||
2698 | return sb.toString(); | |
2699 | } | |
2700 | ||
2701 | /** | |
2702 | * Throws a ParseException stating that the parent-child relation between | |
2703 | * the given node and its parent is not valid. It means that the shape of | |
2704 | * the AST is unexpected. | |
2705 | * | |
2706 | * @param child | |
2707 | * The invalid child node. | |
2708 | * @throws ParseException | |
2709 | */ | |
2710 | private static void childTypeError(CommonTree child) throws ParseException { | |
2711 | CommonTree parent = (CommonTree) child.getParent(); | |
2712 | String error = "Parent " + CTFParser.tokenNames[parent.getType()] //$NON-NLS-1$ | |
2713 | + " can't have a child of type " //$NON-NLS-1$ | |
2714 | + CTFParser.tokenNames[child.getType()] + "."; //$NON-NLS-1$ | |
2715 | ||
2716 | throw new ParseException(error); | |
2717 | } | |
2718 | ||
2719 | // ------------------------------------------------------------------------ | |
2720 | // Scope management | |
2721 | // ------------------------------------------------------------------------ | |
2722 | ||
2723 | /** | |
2724 | * Adds a new declaration scope on the top of the scope stack. | |
2725 | */ | |
2726 | private void pushScope() { | |
2727 | scope = new DeclarationScope(scope); | |
2728 | } | |
2729 | ||
2730 | /** | |
2731 | * Removes the top declaration scope from the scope stack. | |
2732 | */ | |
2733 | private void popScope() { | |
866e5b51 FC |
2734 | scope = scope.getParentScope(); |
2735 | } | |
2736 | ||
2737 | /** | |
2738 | * Returns the current declaration scope. | |
2739 | * | |
2740 | * @return The current declaration scope. | |
2741 | */ | |
2742 | private DeclarationScope getCurrentScope() { | |
866e5b51 FC |
2743 | return scope; |
2744 | } | |
2745 | ||
2746 | } |