author | prr |
Tue, 15 Jul 2014 11:22:14 -0700 | |
changeset 25522 | 10d789df41bb |
parent 5506 | 202f599c92aa |
child 25799 | 1afc4675dc75 |
permissions | -rw-r--r-- |
2 | 1 |
/* |
5506 | 2 |
* Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved. |
2 | 3 |
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 |
* |
|
5 |
* This code is free software; you can redistribute it and/or modify it |
|
6 |
* under the terms of the GNU General Public License version 2 only, as |
|
5506 | 7 |
* published by the Free Software Foundation. Oracle designates this |
2 | 8 |
* particular file as subject to the "Classpath" exception as provided |
5506 | 9 |
* by Oracle in the LICENSE file that accompanied this code. |
2 | 10 |
* |
11 |
* This code is distributed in the hope that it will be useful, but WITHOUT |
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
13 |
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
14 |
* version 2 for more details (a copy is included in the LICENSE file that |
|
15 |
* accompanied this code). |
|
16 |
* |
|
17 |
* You should have received a copy of the GNU General Public License version |
|
18 |
* 2 along with this work; if not, write to the Free Software Foundation, |
|
19 |
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
|
20 |
* |
|
5506 | 21 |
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
22 |
* or visit www.oracle.com if you need additional information or have any |
|
23 |
* questions. |
|
2 | 24 |
*/ |
25 |
||
26 |
package sun.tools.javac; |
|
27 |
||
28 |
import sun.tools.java.*; |
|
29 |
import sun.tools.tree.*; |
|
30 |
import sun.tools.asm.*; |
|
31 |
import java.util.Vector; |
|
32 |
import java.util.Enumeration; |
|
33 |
import java.util.Hashtable; |
|
34 |
import java.io.PrintStream; |
|
35 |
||
36 |
/** |
|
37 |
* A Source Member |
|
38 |
* |
|
39 |
* WARNING: The contents of this source file are not part of any |
|
40 |
* supported API. Code that depends on them does so at its own risk: |
|
41 |
* they are subject to change or removal without notice. |
|
42 |
*/ |
|
43 |
@Deprecated |
|
44 |
public |
|
45 |
class SourceMember extends MemberDefinition implements Constants { |
|
46 |
/** |
|
47 |
* The argument names (if it is a method) |
|
48 |
*/ |
|
49 |
Vector args; |
|
50 |
||
51 |
// set to the MemberDefinition in the interface if we have this field because |
|
52 |
// it has been forced on us |
|
53 |
MemberDefinition abstractSource; |
|
54 |
||
55 |
/** |
|
56 |
* The status of the field |
|
57 |
*/ |
|
58 |
int status; |
|
59 |
||
60 |
static final int PARSED = 0; |
|
61 |
static final int CHECKING = 1; |
|
62 |
static final int CHECKED = 2; |
|
63 |
static final int INLINING = 3; |
|
64 |
static final int INLINED = 4; |
|
65 |
static final int ERROR = 5; |
|
66 |
||
67 |
public Vector getArguments() { |
|
68 |
return args; |
|
69 |
} |
|
70 |
||
71 |
/** |
|
72 |
* Constructor |
|
73 |
* @param argNames a vector of IdentifierToken |
|
74 |
*/ |
|
75 |
public SourceMember(long where, ClassDefinition clazz, |
|
76 |
String doc, int modifiers, Type type, |
|
77 |
Identifier name, Vector argNames, |
|
78 |
IdentifierToken exp[], Node value) { |
|
79 |
super(where, clazz, modifiers, type, name, exp, value); |
|
80 |
this.documentation = doc; |
|
81 |
this.args = argNames; // for the moment |
|
82 |
// not until type names are resolved: createArgumentFields(argNames); |
|
83 |
||
84 |
if (ClassDefinition.containsDeprecated(documentation)) { |
|
85 |
this.modifiers |= M_DEPRECATED; |
|
86 |
} |
|
87 |
} |
|
88 |
||
89 |
void createArgumentFields(Vector argNames) { |
|
90 |
// Create a list of arguments |
|
91 |
if (isMethod()) { |
|
92 |
args = new Vector(); |
|
93 |
||
94 |
if (isConstructor() || !(isStatic() || isInitializer())) { |
|
95 |
args.addElement(((SourceClass)clazz).getThisArgument()); |
|
96 |
} |
|
97 |
||
98 |
if (argNames != null) { |
|
99 |
Enumeration e = argNames.elements(); |
|
100 |
Type argTypes[] = getType().getArgumentTypes(); |
|
101 |
for (int i = 0 ; i < argTypes.length ; i++) { |
|
102 |
Object x = e.nextElement(); |
|
103 |
if (x instanceof LocalMember) { |
|
104 |
// This should not happen, but it does |
|
105 |
// in cases of vicious cyclic inheritance. |
|
106 |
args = argNames; |
|
107 |
return; |
|
108 |
} |
|
109 |
Identifier id; |
|
110 |
int mod; |
|
111 |
long where; |
|
112 |
if (x instanceof Identifier) { |
|
113 |
// allow argNames to be simple Identifiers (deprecated!) |
|
114 |
id = (Identifier)x; |
|
115 |
mod = 0; |
|
116 |
where = getWhere(); |
|
117 |
} else { |
|
118 |
IdentifierToken token = (IdentifierToken)x; |
|
119 |
id = token.getName(); |
|
120 |
mod = token.getModifiers(); |
|
121 |
where = token.getWhere(); |
|
122 |
} |
|
123 |
args.addElement(new LocalMember(where, clazz, mod, |
|
124 |
argTypes[i], id)); |
|
125 |
} |
|
126 |
} |
|
127 |
} |
|
128 |
} |
|
129 |
||
130 |
// The methods addOuterThis() and addUplevelArguments() were |
|
131 |
// both originally part of a single method called addUplevelArguments() |
|
132 |
// which took a single boolean parameter describing which of the |
|
133 |
// two behaviors it wanted. |
|
134 |
// |
|
135 |
// The original addUplevelArguments() claimed to keep the arguments in |
|
136 |
// the following order: |
|
137 |
// |
|
138 |
// (1) <this> <early outer this> <uplevel arguments...> <true arguments...> |
|
139 |
// |
|
140 |
// (By <early outer this> I am referring to the clientOuterField added |
|
141 |
// to some constructors when they are created. If an outer this is |
|
142 |
// added later, on demand, then this is mixed in with the rest of the |
|
143 |
// uplevel arguments and is added by addUplevelArguments.) |
|
144 |
// |
|
145 |
// In reality, the `args' Vector was generated in this order, but the |
|
146 |
// Type array `argTypes' was generated as: |
|
147 |
// |
|
148 |
// (2) <this> <uplevel arguments...> <early outer this> <true arguments...> |
|
149 |
// |
|
150 |
// This didn't make a difference in the common case -- that is, when |
|
151 |
// a class had an <outer.this> or <uplevel arguments...> but not both. |
|
152 |
// Both can happen in the case that a member class is declared inside |
|
153 |
// of a local class. It seems that the calling sequences, generated |
|
154 |
// in places like NewInstanceExpression.codeCommon(), use order (2), |
|
155 |
// so I have changed the code below to stick with that order. Since |
|
156 |
// the only time this happens is in classes which are insideLocal, no |
|
157 |
// one should be able to tell the difference between these orders. |
|
158 |
// (bug number 4085633) |
|
159 |
||
160 |
LocalMember outerThisArg = null; |
|
161 |
||
162 |
/** |
|
163 |
* Get outer instance link, or null if none. |
|
164 |
*/ |
|
165 |
||
166 |
public LocalMember getOuterThisArg() { |
|
167 |
return outerThisArg; |
|
168 |
} |
|
169 |
||
170 |
/** |
|
171 |
* Add the outer.this argument to the list of arguments for this |
|
172 |
* constructor. This is called from resolveTypeStructure. Any |
|
173 |
* additional uplevel arguments get added later by addUplevelArguments(). |
|
174 |
*/ |
|
175 |
||
176 |
void addOuterThis() { |
|
177 |
UplevelReference refs = clazz.getReferences(); |
|
178 |
||
179 |
// See if we have a client outer field. |
|
180 |
while (refs != null && |
|
181 |
!refs.isClientOuterField()) { |
|
182 |
refs = refs.getNext(); |
|
183 |
} |
|
184 |
||
185 |
// There is no outer this argument. Quit. |
|
186 |
if (refs == null) { |
|
187 |
return; |
|
188 |
} |
|
189 |
||
190 |
// Get the old arg types. |
|
191 |
Type oldArgTypes[] = type.getArgumentTypes(); |
|
192 |
||
193 |
// And make an array for the new ones with space for one more. |
|
194 |
Type argTypes[] = new Type[oldArgTypes.length + 1]; |
|
195 |
||
196 |
LocalMember arg = refs.getLocalArgument(); |
|
197 |
outerThisArg = arg; |
|
198 |
||
199 |
// args is our list of arguments. It contains a `this', so |
|
200 |
// we insert at position 1. The list of types does not have a |
|
201 |
// this, so we insert at position 0. |
|
202 |
args.insertElementAt(arg, 1); |
|
203 |
argTypes[0] = arg.getType(); |
|
204 |
||
205 |
// Add on the rest of the constructor arguments. |
|
206 |
for (int i = 0; i < oldArgTypes.length; i++) { |
|
207 |
argTypes[i + 1] = oldArgTypes[i]; |
|
208 |
} |
|
209 |
||
210 |
type = Type.tMethod(type.getReturnType(), argTypes); |
|
211 |
} |
|
212 |
||
213 |
/** |
|
214 |
* Prepend argument names and argument types for local variable references. |
|
215 |
* This information is never seen by the type-check phase, |
|
216 |
* but it affects code generation, which is the earliest moment |
|
217 |
* we have comprehensive information on uplevel references. |
|
218 |
* The code() methods tweaks the constructor calls, prepending |
|
219 |
* the proper values to the argument list. |
|
220 |
*/ |
|
221 |
void addUplevelArguments() { |
|
222 |
UplevelReference refs = clazz.getReferences(); |
|
223 |
clazz.getReferencesFrozen(); |
|
224 |
||
225 |
// Count how many uplevels we have to add. |
|
226 |
int count = 0; |
|
227 |
for (UplevelReference r = refs; r != null; r = r.getNext()) { |
|
228 |
if (!r.isClientOuterField()) { |
|
229 |
count += 1; |
|
230 |
} |
|
231 |
} |
|
232 |
||
233 |
if (count == 0) { |
|
234 |
// None to add, quit. |
|
235 |
return; |
|
236 |
} |
|
237 |
||
238 |
// Get the old argument types. |
|
239 |
Type oldArgTypes[] = type.getArgumentTypes(); |
|
240 |
||
241 |
// Make an array with enough room for the new. |
|
242 |
Type argTypes[] = new Type[oldArgTypes.length + count]; |
|
243 |
||
244 |
// Add all of the late uplevel references to args and argTypes. |
|
245 |
// Note that they are `off-by-one' because of the `this'. |
|
246 |
int ins = 0; |
|
247 |
for (UplevelReference r = refs; r != null; r = r.getNext()) { |
|
248 |
if (!r.isClientOuterField()) { |
|
249 |
LocalMember arg = r.getLocalArgument(); |
|
250 |
||
251 |
args.insertElementAt(arg, 1 + ins); |
|
252 |
argTypes[ins] = arg.getType(); |
|
253 |
||
254 |
ins++; |
|
255 |
} |
|
256 |
} |
|
257 |
||
258 |
// Add the rest of the old arguments. |
|
259 |
for (int i = 0; i < oldArgTypes.length; i++) { |
|
260 |
argTypes[ins + i] = oldArgTypes[i]; |
|
261 |
} |
|
262 |
||
263 |
type = Type.tMethod(type.getReturnType(), argTypes); |
|
264 |
} |
|
265 |
||
266 |
/** |
|
267 |
* Constructor for an inner class. |
|
268 |
*/ |
|
269 |
public SourceMember(ClassDefinition innerClass) { |
|
270 |
super(innerClass); |
|
271 |
} |
|
272 |
||
273 |
/** |
|
274 |
* Constructor. |
|
275 |
* Used only to generate an abstract copy of a method that a class |
|
276 |
* inherits from an interface |
|
277 |
*/ |
|
278 |
public SourceMember(MemberDefinition f, ClassDefinition c, Environment env) { |
|
279 |
this(f.getWhere(), c, f.getDocumentation(), |
|
280 |
f.getModifiers() | M_ABSTRACT, f.getType(), f.getName(), null, |
|
281 |
f.getExceptionIds(), null); |
|
282 |
this.args = f.getArguments(); |
|
283 |
this.abstractSource = f; |
|
284 |
this.exp = f.getExceptions(env); |
|
285 |
} |
|
286 |
||
287 |
/** |
|
288 |
* Get exceptions |
|
289 |
*/ |
|
290 |
public ClassDeclaration[] getExceptions(Environment env) { |
|
291 |
if ((!isMethod()) || (exp != null)) { |
|
292 |
return exp; |
|
293 |
} |
|
294 |
if (expIds == null) { |
|
295 |
// (should not happen) |
|
296 |
exp = new ClassDeclaration[0]; |
|
297 |
return exp; |
|
298 |
} |
|
299 |
// be sure to get the imports right: |
|
300 |
env = ((SourceClass)getClassDefinition()).setupEnv(env); |
|
301 |
exp = new ClassDeclaration[expIds.length]; |
|
302 |
for (int i = 0; i < exp.length; i++) { |
|
303 |
Identifier e = expIds[i].getName(); |
|
304 |
Identifier rexp = getClassDefinition().resolveName(env, e); |
|
305 |
exp[i] = env.getClassDeclaration(rexp); |
|
306 |
} |
|
307 |
return exp; |
|
308 |
} |
|
309 |
||
310 |
/** |
|
311 |
* Set array of name-resolved exceptions directly, e.g., for access methods. |
|
312 |
*/ |
|
313 |
public void setExceptions(ClassDeclaration[] exp) { |
|
314 |
this.exp = exp; |
|
315 |
} |
|
316 |
||
317 |
/** |
|
318 |
* Resolve types in a field, after parsing. |
|
319 |
* @see ClassDefinition.resolveTypeStructure |
|
320 |
*/ |
|
321 |
||
322 |
public boolean resolved = false; |
|
323 |
||
324 |
public void resolveTypeStructure(Environment env) { |
|
325 |
if (tracing) env.dtEnter("SourceMember.resolveTypeStructure: " + this); |
|
326 |
||
327 |
// A member should only be resolved once. For a constructor, it is imperative |
|
328 |
// that 'addOuterThis' be called only once, else the outer instance argument may |
|
329 |
// be inserted into the argument list multiple times. |
|
330 |
||
331 |
if (resolved) { |
|
332 |
if (tracing) env.dtEvent("SourceMember.resolveTypeStructure: OK " + this); |
|
333 |
// This case shouldn't be happening. It is the responsibility |
|
334 |
// of our callers to avoid attempting multiple resolutions of a member. |
|
335 |
// *** REMOVE FOR SHIPMENT? *** |
|
336 |
throw new CompilerError("multiple member type resolution"); |
|
337 |
//return; |
|
338 |
} else { |
|
339 |
if (tracing) env.dtEvent("SourceMember.resolveTypeStructure: RESOLVING " + this); |
|
340 |
resolved = true; |
|
341 |
} |
|
342 |
||
343 |
super.resolveTypeStructure(env); |
|
344 |
if (isInnerClass()) { |
|
345 |
ClassDefinition nc = getInnerClass(); |
|
346 |
if (nc instanceof SourceClass && !nc.isLocal()) { |
|
347 |
((SourceClass)nc).resolveTypeStructure(env); |
|
348 |
} |
|
349 |
type = innerClass.getType(); |
|
350 |
} else { |
|
351 |
// Expand all class names in 'type', including those that are not |
|
352 |
// fully-qualified or refer to inner classes, into fully-qualified |
|
353 |
// names. Local and anonymous classes get synthesized names here, |
|
354 |
// corresponding to the class files that will be generated. This is |
|
355 |
// currently the only place where 'resolveNames' is used. |
|
356 |
type = env.resolveNames(getClassDefinition(), type, isSynthetic()); |
|
357 |
||
358 |
// do the throws also: |
|
359 |
getExceptions(env); |
|
360 |
||
361 |
if (isMethod()) { |
|
362 |
Vector argNames = args; args = null; |
|
363 |
createArgumentFields(argNames); |
|
364 |
// Add outer instance argument for constructors. |
|
365 |
if (isConstructor()) { |
|
366 |
addOuterThis(); |
|
367 |
} |
|
368 |
} |
|
369 |
} |
|
370 |
if (tracing) env.dtExit("SourceMember.resolveTypeStructure: " + this); |
|
371 |
} |
|
372 |
||
373 |
/** |
|
374 |
* Get the class declaration in which the field is actually defined |
|
375 |
*/ |
|
376 |
public ClassDeclaration getDefiningClassDeclaration() { |
|
377 |
if (abstractSource == null) |
|
378 |
return super.getDefiningClassDeclaration(); |
|
379 |
else |
|
380 |
return abstractSource.getDefiningClassDeclaration(); |
|
381 |
} |
|
382 |
||
383 |
/** |
|
384 |
* A source field never reports deprecation, since the compiler |
|
385 |
* allows access to deprecated features that are being compiled |
|
386 |
* in the same job. |
|
387 |
*/ |
|
388 |
public boolean reportDeprecated(Environment env) { |
|
389 |
return false; |
|
390 |
} |
|
391 |
||
392 |
/** |
|
393 |
* Check this field. |
|
394 |
* <p> |
|
395 |
* This is the method which requests checking. |
|
396 |
* The real work is done by |
|
397 |
* <tt>Vset check(Environment, Context, Vset)</tt>. |
|
398 |
*/ |
|
399 |
public void check(Environment env) throws ClassNotFound { |
|
400 |
if (tracing) env.dtEnter("SourceMember.check: " + |
|
401 |
getName() + ", status = " + status); |
|
402 |
// rely on the class to check all fields in the proper order |
|
403 |
if (status == PARSED) { |
|
404 |
if (isSynthetic() && getValue() == null) { |
|
405 |
// break a big cycle for small synthetic variables |
|
406 |
status = CHECKED; |
|
407 |
if (tracing) |
|
408 |
env.dtExit("SourceMember.check: BREAKING CYCLE"); |
|
409 |
return; |
|
410 |
} |
|
411 |
if (tracing) env.dtEvent("SourceMember.check: CHECKING CLASS"); |
|
412 |
clazz.check(env); |
|
413 |
if (status == PARSED) { |
|
414 |
if (getClassDefinition().getError()) { |
|
415 |
status = ERROR; |
|
416 |
} else { |
|
417 |
if (tracing) |
|
418 |
env.dtExit("SourceMember.check: CHECK FAILED"); |
|
419 |
throw new CompilerError("check failed"); |
|
420 |
} |
|
421 |
} |
|
422 |
} |
|
423 |
if (tracing) env.dtExit("SourceMember.check: DONE " + |
|
424 |
getName() + ", status = " + status); |
|
425 |
} |
|
426 |
||
427 |
/** |
|
428 |
* Check a field. |
|
429 |
* @param vset tells which uplevel variables are definitely assigned |
|
430 |
* The vset is also used to track the initialization of blank finals |
|
431 |
* by whichever fields which are relevant to them. |
|
432 |
*/ |
|
433 |
public Vset check(Environment env, Context ctx, Vset vset) throws ClassNotFound { |
|
434 |
if (tracing) env.dtEvent("SourceMember.check: MEMBER " + |
|
435 |
getName() + ", status = " + status); |
|
436 |
if (status == PARSED) { |
|
437 |
if (isInnerClass()) { |
|
438 |
// some classes are checked separately |
|
439 |
ClassDefinition nc = getInnerClass(); |
|
440 |
if (nc instanceof SourceClass && !nc.isLocal() |
|
441 |
&& nc.isInsideLocal()) { |
|
442 |
status = CHECKING; |
|
443 |
vset = ((SourceClass)nc).checkInsideClass(env, ctx, vset); |
|
444 |
} |
|
445 |
status = CHECKED; |
|
446 |
return vset; |
|
447 |
} |
|
448 |
if (env.dump()) { |
|
449 |
System.out.println("[check field " + getClassDeclaration().getName() + "." + getName() + "]"); |
|
450 |
if (getValue() != null) { |
|
451 |
getValue().print(System.out); |
|
452 |
System.out.println(); |
|
453 |
} |
|
454 |
} |
|
455 |
env = new Environment(env, this); |
|
456 |
||
457 |
// This is where all checking of names appearing within the type |
|
458 |
// of the member is done. Includes return type and argument types. |
|
459 |
// Since only one location ('where') for error messages is provided, |
|
460 |
// localization of errors is poor. Throws clauses are handled below. |
|
461 |
env.resolve(where, getClassDefinition(), getType()); |
|
462 |
||
463 |
// Make sure that all the classes that we claim to throw really |
|
464 |
// are subclasses of Throwable, and are classes that we can reach |
|
465 |
if (isMethod()) { |
|
466 |
ClassDeclaration throwable = |
|
467 |
env.getClassDeclaration(idJavaLangThrowable); |
|
468 |
ClassDeclaration exp[] = getExceptions(env); |
|
469 |
for (int i = 0 ; i < exp.length ; i++) { |
|
470 |
ClassDefinition def; |
|
471 |
long where = getWhere(); |
|
472 |
if (expIds != null && i < expIds.length) { |
|
473 |
where = IdentifierToken.getWhere(expIds[i], where); |
|
474 |
} |
|
475 |
try { |
|
476 |
def = exp[i].getClassDefinition(env); |
|
477 |
||
478 |
// Validate access for all inner-class components |
|
479 |
// of a qualified name, not just the last one, which |
|
480 |
// is checked below. Yes, this is a dirty hack... |
|
481 |
// Part of fix for 4094658. |
|
482 |
env.resolveByName(where, getClassDefinition(), def.getName()); |
|
483 |
||
484 |
} catch (ClassNotFound e) { |
|
485 |
env.error(where, "class.not.found", e.name, "throws"); |
|
486 |
break; |
|
487 |
} |
|
488 |
def.noteUsedBy(getClassDefinition(), where, env); |
|
489 |
if (!getClassDefinition(). |
|
490 |
canAccess(env, def.getClassDeclaration())) { |
|
491 |
env.error(where, "cant.access.class", def); |
|
492 |
} else if (!def.subClassOf(env, throwable)) { |
|
493 |
env.error(where, "throws.not.throwable", def); |
|
494 |
} |
|
495 |
} |
|
496 |
} |
|
497 |
||
498 |
status = CHECKING; |
|
499 |
||
500 |
if (isMethod() && args != null) { |
|
501 |
int length = args.size(); |
|
502 |
outer_loop: |
|
503 |
for (int i = 0; i < length; i++) { |
|
504 |
LocalMember lf = (LocalMember)(args.elementAt(i)); |
|
505 |
Identifier name_i = lf.getName(); |
|
506 |
for (int j = i + 1; j < length; j++) { |
|
507 |
LocalMember lf2 = (LocalMember)(args.elementAt(j)); |
|
508 |
Identifier name_j = lf2.getName(); |
|
509 |
if (name_i.equals(name_j)) { |
|
510 |
env.error(lf2.getWhere(), "duplicate.argument", |
|
511 |
name_i); |
|
512 |
break outer_loop; |
|
513 |
} |
|
514 |
} |
|
515 |
} |
|
516 |
} |
|
517 |
||
518 |
if (getValue() != null) { |
|
519 |
ctx = new Context(ctx, this); |
|
520 |
||
521 |
if (isMethod()) { |
|
522 |
Statement s = (Statement)getValue(); |
|
523 |
// initialize vset, indication that each of the arguments |
|
524 |
// to the function has a value |
|
525 |
||
526 |
for (Enumeration e = args.elements(); e.hasMoreElements();){ |
|
527 |
LocalMember f = (LocalMember)e.nextElement(); |
|
528 |
vset.addVar(ctx.declare(env, f)); |
|
529 |
} |
|
530 |
||
531 |
if (isConstructor()) { |
|
532 |
// Undefine "this" in some constructors, until after |
|
533 |
// the super constructor has been called. |
|
534 |
vset.clearVar(ctx.getThisNumber()); |
|
535 |
||
536 |
// If the first thing in the definition isn't a call |
|
537 |
// to either super() or this(), then insert one. |
|
538 |
Expression supCall = s.firstConstructor(); |
|
539 |
if ((supCall == null) |
|
540 |
&& (getClassDefinition().getSuperClass() != null)) { |
|
541 |
supCall = getDefaultSuperCall(env); |
|
542 |
Statement scs = new ExpressionStatement(where, |
|
543 |
supCall); |
|
544 |
s = Statement.insertStatement(scs, s); |
|
545 |
setValue(s); |
|
546 |
} |
|
547 |
} |
|
548 |
||
549 |
//System.out.println("VSET = " + vset); |
|
550 |
ClassDeclaration exp[] = getExceptions(env); |
|
551 |
int htsize = (exp.length > 3) ? 17 : 7; |
|
552 |
Hashtable thrown = new Hashtable(htsize); |
|
553 |
||
554 |
vset = s.checkMethod(env, ctx, vset, thrown); |
|
555 |
||
556 |
ClassDeclaration ignore1 = |
|
557 |
env.getClassDeclaration(idJavaLangError); |
|
558 |
ClassDeclaration ignore2 = |
|
559 |
env.getClassDeclaration(idJavaLangRuntimeException); |
|
560 |
||
561 |
for (Enumeration e = thrown.keys(); e.hasMoreElements();) { |
|
562 |
ClassDeclaration c = (ClassDeclaration)e.nextElement(); |
|
563 |
ClassDefinition def = c.getClassDefinition(env); |
|
564 |
if (def.subClassOf(env, ignore1) |
|
565 |
|| def.subClassOf(env, ignore2)) { |
|
566 |
continue; |
|
567 |
} |
|
568 |
||
569 |
boolean ok = false; |
|
570 |
if (!isInitializer()) { |
|
571 |
for (int i = 0 ; i < exp.length ; i++) { |
|
572 |
if (def.subClassOf(env, exp[i])) { |
|
573 |
ok = true; |
|
574 |
} |
|
575 |
} |
|
576 |
} |
|
577 |
if (!ok) { |
|
578 |
Node n = (Node)thrown.get(c); |
|
579 |
long where = n.getWhere(); |
|
580 |
String errorMsg; |
|
581 |
||
582 |
if (isConstructor()) { |
|
583 |
if (where == |
|
584 |
getClassDefinition().getWhere()) { |
|
585 |
||
586 |
// If this message is being generated for |
|
587 |
// a default constructor, we should give |
|
588 |
// a different error message. Currently |
|
589 |
// we check for this by seeing if the |
|
590 |
// constructor has the same "where" as |
|
591 |
// its class. This is a bit kludgy, but |
|
592 |
// works. (bug id 4034836) |
|
593 |
errorMsg = "def.constructor.exception"; |
|
594 |
} else { |
|
595 |
// Constructor with uncaught exception. |
|
596 |
errorMsg = "constructor.exception"; |
|
597 |
} |
|
598 |
} else if (isInitializer()) { |
|
599 |
// Initializer with uncaught exception. |
|
600 |
errorMsg = "initializer.exception"; |
|
601 |
} else { |
|
602 |
// Method with uncaught exception. |
|
603 |
errorMsg = "uncaught.exception"; |
|
604 |
} |
|
605 |
env.error(where, errorMsg, c.getName()); |
|
606 |
} |
|
607 |
} |
|
608 |
} else { |
|
609 |
Hashtable thrown = new Hashtable(3); // small & throw-away |
|
610 |
Expression val = (Expression)getValue(); |
|
611 |
||
612 |
vset = val.checkInitializer(env, ctx, vset, |
|
613 |
getType(), thrown); |
|
614 |
setValue(val.convert(env, ctx, getType(), val)); |
|
615 |
||
616 |
// Complain about static final members of inner classes that |
|
617 |
// do not have an initializer that is a constant expression. |
|
618 |
// In general, static members are not permitted for inner |
|
619 |
// classes, but an exception is made for named constants. |
|
620 |
// Other cases of static members, including non-final ones, |
|
621 |
// are handled in 'SourceClass'. Part of fix for 4095568. |
|
622 |
if (isStatic() && isFinal() && !clazz.isTopLevel()) { |
|
623 |
if (!((Expression)getValue()).isConstant()) { |
|
624 |
env.error(where, "static.inner.field", getName(), this); |
|
625 |
setValue(null); |
|
626 |
} |
|
627 |
} |
|
628 |
||
629 |
||
630 |
// Both RuntimeExceptions and Errors should be |
|
631 |
// allowed in initializers. Fix for bug 4102541. |
|
632 |
ClassDeclaration except = |
|
633 |
env.getClassDeclaration(idJavaLangThrowable); |
|
634 |
ClassDeclaration ignore1 = |
|
635 |
env.getClassDeclaration(idJavaLangError); |
|
636 |
ClassDeclaration ignore2 = |
|
637 |
env.getClassDeclaration(idJavaLangRuntimeException); |
|
638 |
||
639 |
for (Enumeration e = thrown.keys(); e.hasMoreElements(); ) { |
|
640 |
ClassDeclaration c = (ClassDeclaration)e.nextElement(); |
|
641 |
ClassDefinition def = c.getClassDefinition(env); |
|
642 |
||
643 |
if (!def.subClassOf(env, ignore1) |
|
644 |
&& !def.subClassOf(env, ignore2) |
|
645 |
&& def.subClassOf(env, except)) { |
|
646 |
Node n = (Node)thrown.get(c); |
|
647 |
env.error(n.getWhere(), |
|
648 |
"initializer.exception", c.getName()); |
|
649 |
} |
|
650 |
} |
|
651 |
} |
|
652 |
if (env.dump()) { |
|
653 |
getValue().print(System.out); |
|
654 |
System.out.println(); |
|
655 |
} |
|
656 |
} |
|
657 |
status = getClassDefinition().getError() ? ERROR : CHECKED; |
|
658 |
} |
|
659 |
||
660 |
||
661 |
// Initializers (static and instance) must be able to complete normally. |
|
662 |
if (isInitializer() && vset.isDeadEnd()) { |
|
663 |
env.error(where, "init.no.normal.completion"); |
|
664 |
vset = vset.clearDeadEnd(); |
|
665 |
} |
|
666 |
||
667 |
return vset; |
|
668 |
} |
|
669 |
||
670 |
// helper to check(): synthesize a missing super() call |
|
671 |
private Expression getDefaultSuperCall(Environment env) { |
|
672 |
Expression se = null; |
|
673 |
ClassDefinition sclass = getClassDefinition().getSuperClass().getClassDefinition(); |
|
674 |
// does the superclass constructor require an enclosing instance? |
|
675 |
ClassDefinition reqc = (sclass == null) ? null |
|
676 |
: sclass.isTopLevel() ? null |
|
677 |
: sclass.getOuterClass(); |
|
678 |
ClassDefinition thisc = getClassDefinition(); |
|
679 |
if (reqc != null && !Context.outerLinkExists(env, reqc, thisc)) { |
|
680 |
se = new SuperExpression(where, new NullExpression(where)); |
|
681 |
env.error(where, "no.default.outer.arg", reqc, getClassDefinition()); |
|
682 |
} |
|
683 |
if (se == null) { |
|
684 |
se = new SuperExpression(where); |
|
685 |
} |
|
686 |
return new MethodExpression(where, se, idInit, new Expression[0]); |
|
687 |
} |
|
688 |
||
689 |
/** |
|
690 |
* Inline the field |
|
691 |
*/ |
|
692 |
void inline(Environment env) throws ClassNotFound { |
|
693 |
switch (status) { |
|
694 |
case PARSED: |
|
695 |
check(env); |
|
696 |
inline(env); |
|
697 |
break; |
|
698 |
||
699 |
case CHECKED: |
|
700 |
if (env.dump()) { |
|
701 |
System.out.println("[inline field " + getClassDeclaration().getName() + "." + getName() + "]"); |
|
702 |
} |
|
703 |
status = INLINING; |
|
704 |
env = new Environment(env, this); |
|
705 |
||
706 |
if (isMethod()) { |
|
707 |
if ((!isNative()) && (!isAbstract())) { |
|
708 |
Statement s = (Statement)getValue(); |
|
709 |
Context ctx = new Context((Context)null, this); |
|
710 |
for (Enumeration e = args.elements() ; e.hasMoreElements() ;) { |
|
711 |
LocalMember local = (LocalMember)e.nextElement(); |
|
712 |
ctx.declare(env, local); |
|
713 |
} |
|
714 |
setValue(s.inline(env, ctx)); |
|
715 |
} |
|
716 |
} else if (isInnerClass()) { |
|
717 |
// some classes are checked and inlined separately |
|
718 |
ClassDefinition nc = getInnerClass(); |
|
719 |
if (nc instanceof SourceClass && !nc.isLocal() |
|
720 |
&& nc.isInsideLocal()) { |
|
721 |
status = INLINING; |
|
722 |
((SourceClass)nc).inlineLocalClass(env); |
|
723 |
} |
|
724 |
status = INLINED; |
|
725 |
break; |
|
726 |
} else { |
|
727 |
if (getValue() != null) { |
|
728 |
Context ctx = new Context((Context)null, this); |
|
729 |
if (!isStatic()) { |
|
730 |
// Cf. "thisArg" in SourceClass.checkMembers(). |
|
731 |
Context ctxInst = new Context(ctx, this); |
|
732 |
LocalMember thisArg = |
|
733 |
((SourceClass)clazz).getThisArgument(); |
|
734 |
ctxInst.declare(env, thisArg); |
|
735 |
setValue(((Expression)getValue()) |
|
736 |
.inlineValue(env, ctxInst)); |
|
737 |
} else { |
|
738 |
setValue(((Expression)getValue()) |
|
739 |
.inlineValue(env, ctx)); |
|
740 |
} |
|
741 |
} |
|
742 |
} |
|
743 |
if (env.dump()) { |
|
744 |
System.out.println("[inlined field " + getClassDeclaration().getName() + "." + getName() + "]"); |
|
745 |
if (getValue() != null) { |
|
746 |
getValue().print(System.out); |
|
747 |
System.out.println(); |
|
748 |
} else { |
|
749 |
System.out.println("<empty>"); |
|
750 |
} |
|
751 |
} |
|
752 |
status = INLINED; |
|
753 |
break; |
|
754 |
} |
|
755 |
} |
|
756 |
||
757 |
/** |
|
758 |
* Get the value of the field (or null if the value can't be determined) |
|
759 |
*/ |
|
760 |
public Node getValue(Environment env) throws ClassNotFound { |
|
761 |
Node value = getValue(); |
|
762 |
if (value != null && status != INLINED) { |
|
763 |
// be sure to get the imports right: |
|
764 |
env = ((SourceClass)clazz).setupEnv(env); |
|
765 |
inline(env); |
|
766 |
value = (status == INLINED) ? getValue() : null; |
|
767 |
} |
|
768 |
return value; |
|
769 |
} |
|
770 |
||
771 |
public boolean isInlineable(Environment env, boolean fromFinal) throws ClassNotFound { |
|
772 |
if (super.isInlineable(env, fromFinal)) { |
|
773 |
getValue(env); |
|
774 |
return (status == INLINED) && !getClassDefinition().getError(); |
|
775 |
} |
|
776 |
return false; |
|
777 |
} |
|
778 |
||
779 |
||
780 |
/** |
|
781 |
* Get the initial value of the field |
|
782 |
*/ |
|
783 |
public Object getInitialValue() { |
|
784 |
if (isMethod() || (getValue() == null) || (!isFinal()) || (status != INLINED)) { |
|
785 |
return null; |
|
786 |
} |
|
787 |
return ((Expression)getValue()).getValue(); |
|
788 |
} |
|
789 |
||
790 |
/** |
|
791 |
* Generate code |
|
792 |
*/ |
|
793 |
public void code(Environment env, Assembler asm) throws ClassNotFound { |
|
794 |
switch (status) { |
|
795 |
case PARSED: |
|
796 |
check(env); |
|
797 |
code(env, asm); |
|
798 |
return; |
|
799 |
||
800 |
case CHECKED: |
|
801 |
inline(env); |
|
802 |
code(env, asm); |
|
803 |
return; |
|
804 |
||
805 |
case INLINED: |
|
806 |
// Actually generate code |
|
807 |
if (env.dump()) { |
|
808 |
System.out.println("[code field " + getClassDeclaration().getName() + "." + getName() + "]"); |
|
809 |
} |
|
810 |
if (isMethod() && (!isNative()) && (!isAbstract())) { |
|
811 |
env = new Environment(env, this); |
|
812 |
Context ctx = new Context((Context)null, this); |
|
813 |
Statement s = (Statement)getValue(); |
|
814 |
||
815 |
for (Enumeration e = args.elements() ; e.hasMoreElements() ; ) { |
|
816 |
LocalMember f = (LocalMember)e.nextElement(); |
|
817 |
ctx.declare(env, f); |
|
818 |
//ctx.declare(env, (LocalMember)e.nextElement()); |
|
819 |
} |
|
820 |
||
821 |
/* |
|
822 |
if (isConstructor() && ((s == null) || (s.firstConstructor() == null))) { |
|
823 |
ClassDeclaration c = getClassDefinition().getSuperClass(); |
|
824 |
if (c != null) { |
|
825 |
MemberDefinition field = c.getClassDefinition(env).matchMethod(env, getClassDefinition(), idInit); |
|
826 |
asm.add(getWhere(), opc_aload, new Integer(0)); |
|
827 |
asm.add(getWhere(), opc_invokespecial, field); |
|
828 |
asm.add(getWhere(), opc_pop); |
|
829 |
} |
|
830 |
||
831 |
// Output initialization code |
|
832 |
for (MemberDefinition f = getClassDefinition().getFirstMember() ; f != null ; f = f.getNextMember()) { |
|
833 |
if (!f.isStatic()) { |
|
834 |
f.codeInit(env, ctx, asm); |
|
835 |
} |
|
836 |
} |
|
837 |
} |
|
838 |
*/ |
|
839 |
if (s != null) { |
|
840 |
s.code(env, ctx, asm); |
|
841 |
} |
|
842 |
if (getType().getReturnType().isType(TC_VOID) && !isInitializer()) { |
|
843 |
asm.add(getWhere(), opc_return, true); |
|
844 |
} |
|
845 |
} |
|
846 |
return; |
|
847 |
} |
|
848 |
} |
|
849 |
||
850 |
public void codeInit(Environment env, Context ctx, Assembler asm) throws ClassNotFound { |
|
851 |
if (isMethod()) { |
|
852 |
return; |
|
853 |
} |
|
854 |
switch (status) { |
|
855 |
case PARSED: |
|
856 |
check(env); |
|
857 |
codeInit(env, ctx, asm); |
|
858 |
return; |
|
859 |
||
860 |
case CHECKED: |
|
861 |
inline(env); |
|
862 |
codeInit(env, ctx, asm); |
|
863 |
return; |
|
864 |
||
865 |
case INLINED: |
|
866 |
// Actually generate code |
|
867 |
if (env.dump()) { |
|
868 |
System.out.println("[code initializer " + getClassDeclaration().getName() + "." + getName() + "]"); |
|
869 |
} |
|
870 |
if (getValue() != null) { |
|
871 |
Expression e = (Expression)getValue(); |
|
872 |
// The JLS Section 8.5 specifies that static (non-final) |
|
873 |
// initializers should be executed in textual order. Eliding |
|
874 |
// initializations to default values can interfere with this, |
|
875 |
// so the tests for !e.equalsDefault() have been eliminated, |
|
876 |
// below. |
|
877 |
if (isStatic()) { |
|
878 |
if (getInitialValue() == null) { |
|
879 |
// removed: && !e.equalsDefault()) { |
|
880 |
e.codeValue(env, ctx, asm); |
|
881 |
asm.add(getWhere(), opc_putstatic, this); |
|
882 |
} |
|
883 |
} else { // removed: if (!e.equalsDefault()) { |
|
884 |
// This code doesn't appear to be reached for |
|
885 |
// instance initializers. Code for these is generated |
|
886 |
// in the makeVarInits() method of the class |
|
887 |
// MethodExpression. |
|
25522
10d789df41bb
8049892: Replace uses of 'new Integer()' with appropriate alternative across core classes
prr
parents:
5506
diff
changeset
|
888 |
asm.add(getWhere(), opc_aload, 0); |
2 | 889 |
e.codeValue(env, ctx, asm); |
890 |
asm.add(getWhere(), opc_putfield, this); |
|
891 |
} |
|
892 |
} |
|
893 |
return; |
|
894 |
} |
|
895 |
} |
|
896 |
||
897 |
/** |
|
898 |
* Print for debugging |
|
899 |
*/ |
|
900 |
public void print(PrintStream out) { |
|
901 |
super.print(out); |
|
902 |
if (getValue() != null) { |
|
903 |
getValue().print(out); |
|
904 |
out.println(); |
|
905 |
} |
|
906 |
} |
|
907 |
} |