1 /*
2 * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
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 *
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.
24 */
25
26 package com.sun.tools.javac.tree;
27
28 import java.io.IOException;
29 import java.io.StringWriter;
30 import java.util.*;
31
32 import javax.lang.model.element.Modifier;
33 import javax.lang.model.type.TypeKind;
34 import javax.tools.JavaFileObject;
35
36 import com.sun.source.tree.*;
37 import com.sun.tools.javac.code.*;
38 import com.sun.tools.javac.code.Directive.RequiresDirective;
39 import com.sun.tools.javac.code.Scope.*;
40 import com.sun.tools.javac.code.Symbol.*;
41 import com.sun.tools.javac.util.*;
42 import com.sun.tools.javac.util.DefinedBy.Api;
43 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
44 import com.sun.tools.javac.util.List;
45
46 import static com.sun.tools.javac.tree.JCTree.Tag.*;
47
48 import javax.tools.JavaFileManager.Location;
49
50 import com.sun.source.tree.CaseTree.CaseKind;
51 import com.sun.source.tree.ModuleTree.ModuleKind;
52 import com.sun.tools.javac.code.Directive.ExportsDirective;
53 import com.sun.tools.javac.code.Directive.OpensDirective;
54 import com.sun.tools.javac.code.Type.ModuleType;
55 import com.sun.tools.javac.tree.JCTree.JCPolyExpression.PolyKind;
56
57 /**
58 * Root class for abstract syntax tree nodes. It provides definitions
59 * for specific tree nodes as subclasses nested inside.
60 *
61 * <p>Each subclass is highly standardized. It generally contains
62 * only tree fields for the syntactic subcomponents of the node. Some
63 * classes that represent identifier uses or definitions also define a
64 * Symbol field that denotes the represented identifier. Classes for
65 * non-local jumps also carry the jump target as a field. The root
66 * class Tree itself defines fields for the tree's type and position.
67 * No other fields are kept in a tree node; instead parameters are
68 * passed to methods accessing the node.
69 *
70 * <p>Except for the methods defined by com.sun.source, the only
71 * method defined in subclasses is `visit' which applies a given
72 * visitor to the tree. The actual tree processing is done by visitor
73 * classes in other packages. The abstract class Visitor, as well as
74 * an Factory interface for trees, are defined as inner classes in
75 * Tree.
76 *
77 * <p>To avoid ambiguities with the Tree API in com.sun.source all sub
78 * classes should, by convention, start with JC (javac).
79 *
80 * <p><b>This is NOT part of any supported API.
81 * If you write code that depends on this, you do so at your own risk.
82 * This code and its internal interfaces are subject to change or
83 * deletion without notice.</b>
84 *
85 * @see TreeMaker
86 * @see TreeInfo
87 * @see TreeTranslator
88 * @see Pretty
89 */
90 public abstract class JCTree implements Tree, Cloneable, DiagnosticPosition {
91
92 /* Tree tag values, identifying kinds of trees */
93 public enum Tag {
94 /** For methods that return an invalid tag if a given condition is not met
95 */
96 NO_TAG,
97
98 /** Toplevel nodes, of type TopLevel, representing entire source files.
99 */
100 TOPLEVEL,
101
102 /** Package level definitions.
103 */
104 PACKAGEDEF,
105
106 /** Import clauses, of type Import.
107 */
108 IMPORT,
109
110 /** Class definitions, of type ClassDef.
111 */
112 CLASSDEF,
113
114 /** Method definitions, of type MethodDef.
115 */
116 METHODDEF,
117
118 /** Variable definitions, of type VarDef.
119 */
120 VARDEF,
121
122 /** The no-op statement ";", of type Skip
123 */
124 SKIP,
125
126 /** Blocks, of type Block.
127 */
128 BLOCK,
129
130 /** Do-while loops, of type DoLoop.
131 */
132 DOLOOP,
133
134 /** While-loops, of type WhileLoop.
135 */
136 WHILELOOP,
137
138 /** For-loops, of type ForLoop.
139 */
140 FORLOOP,
141
142 /** Foreach-loops, of type ForeachLoop.
143 */
144 FOREACHLOOP,
145
146 /** Labelled statements, of type Labelled.
147 */
148 LABELLED,
149
150 /** Switch statements, of type Switch.
151 */
152 SWITCH,
153
154 /** Case parts in switch statements/expressions, of type Case.
155 */
156 CASE,
157
158 /** Switch expression statements, of type Switch.
159 */
160 SWITCH_EXPRESSION,
161
162 /** Synchronized statements, of type Synchonized.
163 */
164 SYNCHRONIZED,
165
166 /** Try statements, of type Try.
167 */
168 TRY,
169
170 /** Catch clauses in try statements, of type Catch.
171 */
172 CATCH,
173
174 /** Conditional expressions, of type Conditional.
175 */
176 CONDEXPR,
177
178 /** Conditional statements, of type If.
179 */
180 IF,
181
182 /** Expression statements, of type Exec.
183 */
184 EXEC,
185
186 /** Break statements, of type Break.
187 */
188 BREAK,
189
190 /** Continue statements, of type Continue.
191 */
192 CONTINUE,
193
194 /** Return statements, of type Return.
195 */
196 RETURN,
197
198 /** Throw statements, of type Throw.
199 */
200 THROW,
201
202 /** Assert statements, of type Assert.
203 */
204 ASSERT,
205
206 /** Method invocation expressions, of type Apply.
207 */
208 APPLY,
209
210 /** Class instance creation expressions, of type NewClass.
211 */
212 NEWCLASS,
213
214 /** Array creation expressions, of type NewArray.
215 */
216 NEWARRAY,
217
218 /** Lambda expression, of type Lambda.
219 */
220 LAMBDA,
221
222 /** Parenthesized subexpressions, of type Parens.
223 */
224 PARENS,
225
226 /** Assignment expressions, of type Assign.
227 */
228 ASSIGN,
229
230 /** Type cast expressions, of type TypeCast.
231 */
232 TYPECAST,
233
234 /** Type test expressions, of type TypeTest.
235 */
236 TYPETEST,
237
238 /** Indexed array expressions, of type Indexed.
239 */
240 INDEXED,
241
242 /** Selections, of type Select.
243 */
244 SELECT,
245
246 /** Member references, of type Reference.
247 */
248 REFERENCE,
249
250 /** Simple identifiers, of type Ident.
251 */
252 IDENT,
253
254 /** Literals, of type Literal.
255 */
256 LITERAL,
257
258 /** Basic type identifiers, of type TypeIdent.
259 */
260 TYPEIDENT,
261
262 /** Array types, of type TypeArray.
263 */
264 TYPEARRAY,
265
266 /** Parameterized types, of type TypeApply.
267 */
268 TYPEAPPLY,
269
270 /** Union types, of type TypeUnion.
271 */
272 TYPEUNION,
273
274 /** Intersection types, of type TypeIntersection.
275 */
276 TYPEINTERSECTION,
277
278 /** Formal type parameters, of type TypeParameter.
279 */
280 TYPEPARAMETER,
281
282 /** Type argument.
283 */
284 WILDCARD,
285
286 /** Bound kind: extends, super, exact, or unbound
287 */
288 TYPEBOUNDKIND,
289
290 /** metadata: Annotation.
291 */
292 ANNOTATION,
293
294 /** metadata: Type annotation.
295 */
296 TYPE_ANNOTATION,
297
298 /** metadata: Modifiers
299 */
300 MODIFIERS,
301
302 /** An annotated type tree.
303 */
304 ANNOTATED_TYPE,
305
306 /** Error trees, of type Erroneous.
307 */
308 ERRONEOUS,
309
310 /** Unary operators, of type Unary.
311 */
312 POS, // +
313 NEG, // -
314 NOT, // !
315 COMPL, // ~
316 PREINC, // ++ _
317 PREDEC, // -- _
318 POSTINC, // _ ++
319 POSTDEC, // _ --
320
321 /** unary operator for null reference checks, only used internally.
322 */
323 NULLCHK,
324
325 /** Binary operators, of type Binary.
326 */
327 OR, // ||
328 AND, // &&
329 BITOR, // |
330 BITXOR, // ^
331 BITAND, // &
332 EQ, // ==
333 NE, // !=
334 LT, // <
335 GT, // >
336 LE, // <=
337 GE, // >=
338 SL, // <<
339 SR, // >>
340 USR, // >>>
341 PLUS, // +
342 MINUS, // -
343 MUL, // *
344 DIV, // /
345 MOD, // %
346
347 /** Assignment operators, of type Assignop.
348 */
349 BITOR_ASG(BITOR), // |=
350 BITXOR_ASG(BITXOR), // ^=
351 BITAND_ASG(BITAND), // &=
352
353 SL_ASG(SL), // <<=
354 SR_ASG(SR), // >>=
355 USR_ASG(USR), // >>>=
356 PLUS_ASG(PLUS), // +=
357 MINUS_ASG(MINUS), // -=
358 MUL_ASG(MUL), // *=
359 DIV_ASG(DIV), // /=
360 MOD_ASG(MOD), // %=
361
362 MODULEDEF,
363 EXPORTS,
364 OPENS,
365 PROVIDES,
366 REQUIRES,
367 USES,
368
369 /** A synthetic let expression, of type LetExpr.
370 */
371 LETEXPR; // ala scheme
372
373 private final Tag noAssignTag;
374
375 private static final int numberOfOperators = MOD.ordinal() - POS.ordinal() + 1;
376
377 private Tag(Tag noAssignTag) {
378 this.noAssignTag = noAssignTag;
379 }
380
381 private Tag() {
382 this(null);
383 }
384
385 public static int getNumberOfOperators() {
386 return numberOfOperators;
387 }
388
389 public Tag noAssignOp() {
390 if (noAssignTag != null)
391 return noAssignTag;
392 throw new AssertionError("noAssignOp() method is not available for non assignment tags");
393 }
394
395 public boolean isPostUnaryOp() {
396 return (this == POSTINC || this == POSTDEC);
397 }
398
399 public boolean isIncOrDecUnaryOp() {
400 return (this == PREINC || this == PREDEC || this == POSTINC || this == POSTDEC);
401 }
402
403 public boolean isAssignop() {
404 return noAssignTag != null;
405 }
406
407 public int operatorIndex() {
408 return (this.ordinal() - POS.ordinal());
409 }
410 }
411
412 /* The (encoded) position in the source file. @see util.Position.
413 */
414 public int pos;
415
416 /* The type of this node.
417 */
418 public Type type;
419
420 /* The tag of this node -- one of the constants declared above.
421 */
422 public abstract Tag getTag();
423
424 /* Returns true if the tag of this node is equals to tag.
425 */
426 public boolean hasTag(Tag tag) {
427 return tag == getTag();
428 }
429
430 /** Convert a tree to a pretty-printed string. */
431 @Override
432 public String toString() {
433 StringWriter s = new StringWriter();
434 try {
435 new Pretty(s, false).printExpr(this);
436 }
437 catch (IOException e) {
438 // should never happen, because StringWriter is defined
439 // never to throw any IOExceptions
440 throw new AssertionError(e);
441 }
442 return s.toString();
443 }
444
445 /** Set position field and return this tree.
446 */
447 public JCTree setPos(int pos) {
448 this.pos = pos;
449 return this;
450 }
451
452 /** Set type field and return this tree.
453 */
454 public JCTree setType(Type type) {
455 this.type = type;
456 return this;
457 }
458
459 /** Visit this tree with a given visitor.
460 */
461 public abstract void accept(Visitor v);
462
463 @DefinedBy(Api.COMPILER_TREE)
464 public abstract <R,D> R accept(TreeVisitor<R,D> v, D d);
465
466 /** Return a shallow copy of this tree.
467 */
468 @Override
469 public Object clone() {
470 try {
471 return super.clone();
472 } catch(CloneNotSupportedException e) {
473 throw new RuntimeException(e);
474 }
475 }
476
477 /** Get a default position for this tree node.
478 */
479 public DiagnosticPosition pos() {
480 return this;
481 }
482
483 // for default DiagnosticPosition
484 public JCTree getTree() {
485 return this;
486 }
487
488 // for default DiagnosticPosition
489 public int getStartPosition() {
490 return TreeInfo.getStartPos(this);
491 }
492
493 // for default DiagnosticPosition
494 public int getPreferredPosition() {
495 return pos;
496 }
497
498 // for default DiagnosticPosition
499 public int getEndPosition(EndPosTable endPosTable) {
500 return TreeInfo.getEndPos(this, endPosTable);
501 }
502
503 /**
504 * Everything in one source file is kept in a {@linkplain JCCompilationUnit} structure.
505 */
506 public static class JCCompilationUnit extends JCTree implements CompilationUnitTree {
507 /** All definitions in this file (ClassDef, Import, and Skip) */
508 public List<JCTree> defs;
509 /** The source file name. */
510 public JavaFileObject sourcefile;
511 /** The module to which this compilation unit belongs. */
512 public ModuleSymbol modle;
513 /** The location in which this compilation unit was found. */
514 public Location locn;
515 /** The package to which this compilation unit belongs. */
516 public PackageSymbol packge;
517 /** A scope containing top level classes. */
518 public WriteableScope toplevelScope;
519 /** A scope for all named imports. */
520 public NamedImportScope namedImportScope;
521 /** A scope for all import-on-demands. */
522 public StarImportScope starImportScope;
523 /** Line starting positions, defined only if option -g is set. */
524 public Position.LineMap lineMap = null;
525 /** A table that stores all documentation comments indexed by the tree
526 * nodes they refer to. defined only if option -s is set. */
527 public DocCommentTable docComments = null;
528 /* An object encapsulating ending positions of source ranges indexed by
529 * the tree nodes they belong to. Defined only if option -Xjcov is set. */
530 public EndPosTable endPositions = null;
531 protected JCCompilationUnit(List<JCTree> defs) {
532 this.defs = defs;
533 }
534 @Override
535 public void accept(Visitor v) { v.visitTopLevel(this); }
536
537 @DefinedBy(Api.COMPILER_TREE)
538 public Kind getKind() { return Kind.COMPILATION_UNIT; }
539
540 public JCModuleDecl getModuleDecl() {
541 for (JCTree tree : defs) {
542 if (tree.hasTag(MODULEDEF)) {
543 return (JCModuleDecl) tree;
544 }
545 }
546
547 return null;
548 }
549
550 @DefinedBy(Api.COMPILER_TREE)
551 public JCPackageDecl getPackage() {
552 // PackageDecl must be the first entry if it exists
553 if (!defs.isEmpty() && defs.head.hasTag(PACKAGEDEF))
554 return (JCPackageDecl)defs.head;
555 return null;
556 }
557 @DefinedBy(Api.COMPILER_TREE)
558 public List<JCAnnotation> getPackageAnnotations() {
559 JCPackageDecl pd = getPackage();
560 return pd != null ? pd.getAnnotations() : List.nil();
561 }
562 @DefinedBy(Api.COMPILER_TREE)
563 public ExpressionTree getPackageName() {
564 JCPackageDecl pd = getPackage();
565 return pd != null ? pd.getPackageName() : null;
566 }
567
568 @DefinedBy(Api.COMPILER_TREE)
569 public List<JCImport> getImports() {
570 ListBuffer<JCImport> imports = new ListBuffer<>();
571 for (JCTree tree : defs) {
572 if (tree.hasTag(IMPORT))
573 imports.append((JCImport)tree);
574 else if (!tree.hasTag(PACKAGEDEF) && !tree.hasTag(SKIP))
575 break;
576 }
577 return imports.toList();
578 }
579 @DefinedBy(Api.COMPILER_TREE)
580 public JavaFileObject getSourceFile() {
581 return sourcefile;
582 }
583 @DefinedBy(Api.COMPILER_TREE)
584 public Position.LineMap getLineMap() {
585 return lineMap;
586 }
587 @DefinedBy(Api.COMPILER_TREE)
588 public List<JCTree> getTypeDecls() {
589 List<JCTree> typeDefs;
590 for (typeDefs = defs; !typeDefs.isEmpty(); typeDefs = typeDefs.tail)
591 if (!typeDefs.head.hasTag(PACKAGEDEF) && !typeDefs.head.hasTag(IMPORT))
592 break;
593 return typeDefs;
594 }
595 @Override @DefinedBy(Api.COMPILER_TREE)
596 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
597 return v.visitCompilationUnit(this, d);
598 }
599
600 @Override
601 public Tag getTag() {
602 return TOPLEVEL;
603 }
604 }
605
606 /**
607 * Package definition.
608 */
609 public static class JCPackageDecl extends JCTree implements PackageTree {
610 public List<JCAnnotation> annotations;
611 /** The tree representing the package clause. */
612 public JCExpression pid;
613 public PackageSymbol packge;
614 public JCPackageDecl(List<JCAnnotation> annotations, JCExpression pid) {
615 this.annotations = annotations;
616 this.pid = pid;
617 }
618 @Override
619 public void accept(Visitor v) { v.visitPackageDef(this); }
620 @DefinedBy(Api.COMPILER_TREE)
621 public Kind getKind() {
622 return Kind.PACKAGE;
623 }
624 @DefinedBy(Api.COMPILER_TREE)
625 public List<JCAnnotation> getAnnotations() {
626 return annotations;
627 }
628 @DefinedBy(Api.COMPILER_TREE)
629 public JCExpression getPackageName() {
630 return pid;
631 }
632 @Override @DefinedBy(Api.COMPILER_TREE)
633 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
634 return v.visitPackage(this, d);
635 }
636 @Override
637 public Tag getTag() {
638 return PACKAGEDEF;
639 }
640 }
641
642 /**
643 * An import clause.
644 */
645 public static class JCImport extends JCTree implements ImportTree {
646 public boolean staticImport;
647 /** The imported class(es). */
648 public JCTree qualid;
649 public com.sun.tools.javac.code.Scope importScope;
650 protected JCImport(JCTree qualid, boolean importStatic) {
651 this.qualid = qualid;
652 this.staticImport = importStatic;
653 }
654 @Override
655 public void accept(Visitor v) { v.visitImport(this); }
656
657 @DefinedBy(Api.COMPILER_TREE)
658 public boolean isStatic() { return staticImport; }
659 @DefinedBy(Api.COMPILER_TREE)
660 public JCTree getQualifiedIdentifier() { return qualid; }
661
662 @DefinedBy(Api.COMPILER_TREE)
663 public Kind getKind() { return Kind.IMPORT; }
664 @Override @DefinedBy(Api.COMPILER_TREE)
665 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
666 return v.visitImport(this, d);
667 }
668
669 @Override
670 public Tag getTag() {
671 return IMPORT;
672 }
673 }
674
675 public static abstract class JCStatement extends JCTree implements StatementTree {
676 @Override
677 public JCStatement setType(Type type) {
678 super.setType(type);
679 return this;
680 }
681 @Override
682 public JCStatement setPos(int pos) {
683 super.setPos(pos);
684 return this;
685 }
686 }
687
688 public static abstract class JCExpression extends JCTree implements ExpressionTree {
689 @Override
690 public JCExpression setType(Type type) {
691 super.setType(type);
692 return this;
693 }
694 @Override
695 public JCExpression setPos(int pos) {
696 super.setPos(pos);
697 return this;
698 }
699
700 public boolean isPoly() { return false; }
701 public boolean isStandalone() { return true; }
702 }
703
704 /**
705 * Common supertype for all poly expression trees (lambda, method references,
706 * conditionals, method and constructor calls)
707 */
708 public static abstract class JCPolyExpression extends JCExpression {
709
710 /**
711 * A poly expression can only be truly 'poly' in certain contexts
712 */
713 public enum PolyKind {
714 /** poly expression to be treated as a standalone expression */
715 STANDALONE,
716 /** true poly expression */
717 POLY
718 }
719
720 /** is this poly expression a 'true' poly expression? */
721 public PolyKind polyKind;
722
723 @Override public boolean isPoly() { return polyKind == PolyKind.POLY; }
724 @Override public boolean isStandalone() { return polyKind == PolyKind.STANDALONE; }
725 }
726
727 /**
728 * Common supertype for all functional expression trees (lambda and method references)
729 */
730 public static abstract class JCFunctionalExpression extends JCPolyExpression {
731
732 public JCFunctionalExpression() {
733 //a functional expression is always a 'true' poly
734 polyKind = PolyKind.POLY;
735 }
736
737 /** list of target types inferred for this functional expression. */
738 public Type target;
739
740 public Type getDescriptorType(Types types) {
741 return target != null ? types.findDescriptorType(target) : types.createErrorType(null);
742 }
743 }
744
745 /**
746 * A class definition.
747 */
748 public static class JCClassDecl extends JCStatement implements ClassTree {
749 /** the modifiers */
750 public JCModifiers mods;
751 /** the name of the class */
752 public Name name;
753 /** formal class parameters */
754 public List<JCTypeParameter> typarams;
755 /** the classes this class extends */
756 public JCExpression extending;
757 /** the interfaces implemented by this class */
758 public List<JCExpression> implementing;
759 /** all variables and methods defined in this class */
760 public List<JCTree> defs;
761 /** the symbol */
762 public ClassSymbol sym;
763 protected JCClassDecl(JCModifiers mods,
764 Name name,
765 List<JCTypeParameter> typarams,
766 JCExpression extending,
767 List<JCExpression> implementing,
768 List<JCTree> defs,
769 ClassSymbol sym)
770 {
771 this.mods = mods;
772 this.name = name;
773 this.typarams = typarams;
774 this.extending = extending;
775 this.implementing = implementing;
776 this.defs = defs;
777 this.sym = sym;
778 }
779 @Override
780 public void accept(Visitor v) { v.visitClassDef(this); }
781
782 @DefinedBy(Api.COMPILER_TREE)
783 public Kind getKind() {
784 if ((mods.flags & Flags.ANNOTATION) != 0)
785 return Kind.ANNOTATION_TYPE;
786 else if ((mods.flags & Flags.INTERFACE) != 0)
787 return Kind.INTERFACE;
788 else if ((mods.flags & Flags.ENUM) != 0)
789 return Kind.ENUM;
790 else
791 return Kind.CLASS;
792 }
793
794 @DefinedBy(Api.COMPILER_TREE)
795 public JCModifiers getModifiers() { return mods; }
796 @DefinedBy(Api.COMPILER_TREE)
797 public Name getSimpleName() { return name; }
798 @DefinedBy(Api.COMPILER_TREE)
799 public List<JCTypeParameter> getTypeParameters() {
800 return typarams;
801 }
802 @DefinedBy(Api.COMPILER_TREE)
803 public JCExpression getExtendsClause() { return extending; }
804 @DefinedBy(Api.COMPILER_TREE)
805 public List<JCExpression> getImplementsClause() {
806 return implementing;
807 }
808 @DefinedBy(Api.COMPILER_TREE)
809 public List<JCTree> getMembers() {
810 return defs;
811 }
812 @Override @DefinedBy(Api.COMPILER_TREE)
813 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
814 return v.visitClass(this, d);
815 }
816
817 @Override
818 public Tag getTag() {
819 return CLASSDEF;
820 }
821 }
822
823 /**
824 * A method definition.
825 */
826 public static class JCMethodDecl extends JCTree implements MethodTree {
827 /** method modifiers */
828 public JCModifiers mods;
829 /** method name */
830 public Name name;
831 /** type of method return value */
832 public JCExpression restype;
833 /** type parameters */
834 public List<JCTypeParameter> typarams;
835 /** receiver parameter */
836 public JCVariableDecl recvparam;
837 /** value parameters */
838 public List<JCVariableDecl> params;
839 /** exceptions thrown by this method */
840 public List<JCExpression> thrown;
841 /** statements in the method */
842 public JCBlock body;
843 /** default value, for annotation types */
844 public JCExpression defaultValue;
845 /** method symbol */
846 public MethodSymbol sym;
847 protected JCMethodDecl(JCModifiers mods,
848 Name name,
849 JCExpression restype,
850 List<JCTypeParameter> typarams,
851 JCVariableDecl recvparam,
852 List<JCVariableDecl> params,
853 List<JCExpression> thrown,
854 JCBlock body,
855 JCExpression defaultValue,
856 MethodSymbol sym)
857 {
858 this.mods = mods;
859 this.name = name;
860 this.restype = restype;
861 this.typarams = typarams;
862 this.params = params;
863 this.recvparam = recvparam;
864 // TODO: do something special if the given type is null?
865 // receiver != null ? receiver : List.<JCTypeAnnotation>nil());
866 this.thrown = thrown;
867 this.body = body;
868 this.defaultValue = defaultValue;
869 this.sym = sym;
870 }
871 @Override
872 public void accept(Visitor v) { v.visitMethodDef(this); }
873
874 @DefinedBy(Api.COMPILER_TREE)
875 public Kind getKind() { return Kind.METHOD; }
876 @DefinedBy(Api.COMPILER_TREE)
877 public JCModifiers getModifiers() { return mods; }
878 @DefinedBy(Api.COMPILER_TREE)
879 public Name getName() { return name; }
880 @DefinedBy(Api.COMPILER_TREE)
881 public JCTree getReturnType() { return restype; }
882 @DefinedBy(Api.COMPILER_TREE)
883 public List<JCTypeParameter> getTypeParameters() {
884 return typarams;
885 }
886 @DefinedBy(Api.COMPILER_TREE)
887 public List<JCVariableDecl> getParameters() {
888 return params;
889 }
890 @DefinedBy(Api.COMPILER_TREE)
891 public JCVariableDecl getReceiverParameter() { return recvparam; }
892 @DefinedBy(Api.COMPILER_TREE)
893 public List<JCExpression> getThrows() {
894 return thrown;
895 }
896 @DefinedBy(Api.COMPILER_TREE)
897 public JCBlock getBody() { return body; }
898 @DefinedBy(Api.COMPILER_TREE)
899 public JCTree getDefaultValue() { // for annotation types
900 return defaultValue;
901 }
902 @Override @DefinedBy(Api.COMPILER_TREE)
903 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
904 return v.visitMethod(this, d);
905 }
906
907 @Override
908 public Tag getTag() {
909 return METHODDEF;
910 }
911 }
912
913 /**
914 * A variable definition.
915 */
916 public static class JCVariableDecl extends JCStatement implements VariableTree {
917 /** variable modifiers */
918 public JCModifiers mods;
919 /** variable name */
920 public Name name;
921 /** variable name expression */
922 public JCExpression nameexpr;
923 /** type of the variable */
924 public JCExpression vartype;
925 /** variable's initial value */
926 public JCExpression init;
927 /** symbol */
928 public VarSymbol sym;
929 /** explicit start pos */
930 public int startPos = Position.NOPOS;
931
932 protected JCVariableDecl(JCModifiers mods,
933 Name name,
934 JCExpression vartype,
935 JCExpression init,
936 VarSymbol sym) {
937 this.mods = mods;
938 this.name = name;
939 this.vartype = vartype;
940 this.init = init;
941 this.sym = sym;
942 }
943
944 protected JCVariableDecl(JCModifiers mods,
945 JCExpression nameexpr,
946 JCExpression vartype) {
947 this(mods, null, vartype, null, null);
948 this.nameexpr = nameexpr;
949 if (nameexpr.hasTag(Tag.IDENT)) {
950 this.name = ((JCIdent)nameexpr).name;
951 } else {
952 // Only other option is qualified name x.y.this;
953 this.name = ((JCFieldAccess)nameexpr).name;
954 }
955 }
956
957 public boolean isImplicitlyTyped() {
958 return vartype == null;
959 }
960
961 @Override
962 public void accept(Visitor v) { v.visitVarDef(this); }
963
964 @DefinedBy(Api.COMPILER_TREE)
965 public Kind getKind() { return Kind.VARIABLE; }
966 @DefinedBy(Api.COMPILER_TREE)
967 public JCModifiers getModifiers() { return mods; }
968 @DefinedBy(Api.COMPILER_TREE)
969 public Name getName() { return name; }
970 @DefinedBy(Api.COMPILER_TREE)
971 public JCExpression getNameExpression() { return nameexpr; }
972 @DefinedBy(Api.COMPILER_TREE)
973 public JCTree getType() { return vartype; }
974 @DefinedBy(Api.COMPILER_TREE)
975 public JCExpression getInitializer() {
976 return init;
977 }
978 @Override @DefinedBy(Api.COMPILER_TREE)
979 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
980 return v.visitVariable(this, d);
981 }
982
983 @Override
984 public Tag getTag() {
985 return VARDEF;
986 }
987 }
988
989 /**
990 * A no-op statement ";".
991 */
992 public static class JCSkip extends JCStatement implements EmptyStatementTree {
993 protected JCSkip() {
994 }
995 @Override
996 public void accept(Visitor v) { v.visitSkip(this); }
997
998 @DefinedBy(Api.COMPILER_TREE)
999 public Kind getKind() { return Kind.EMPTY_STATEMENT; }
1000 @Override @DefinedBy(Api.COMPILER_TREE)
1001 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1002 return v.visitEmptyStatement(this, d);
1003 }
1004
1005 @Override
1006 public Tag getTag() {
1007 return SKIP;
1008 }
1009 }
1010
1011 /**
1012 * A statement block.
1013 */
1014 public static class JCBlock extends JCStatement implements BlockTree {
1015 /** flags */
1016 public long flags;
1017 /** statements */
1018 public List<JCStatement> stats;
1019 /** Position of closing brace, optional. */
1020 public int endpos = Position.NOPOS;
1021 protected JCBlock(long flags, List<JCStatement> stats) {
1022 this.stats = stats;
1023 this.flags = flags;
1024 }
1025 @Override
1026 public void accept(Visitor v) { v.visitBlock(this); }
1027
1028 @DefinedBy(Api.COMPILER_TREE)
1029 public Kind getKind() { return Kind.BLOCK; }
1030 @DefinedBy(Api.COMPILER_TREE)
1031 public List<JCStatement> getStatements() {
1032 return stats;
1033 }
1034 @DefinedBy(Api.COMPILER_TREE)
1035 public boolean isStatic() { return (flags & Flags.STATIC) != 0; }
1036 @Override @DefinedBy(Api.COMPILER_TREE)
1037 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1038 return v.visitBlock(this, d);
1039 }
1040
1041 @Override
1042 public Tag getTag() {
1043 return BLOCK;
1044 }
1045 }
1046
1047 /**
1048 * A do loop
1049 */
1050 public static class JCDoWhileLoop extends JCStatement implements DoWhileLoopTree {
1051 public JCStatement body;
1052 public JCExpression cond;
1053 protected JCDoWhileLoop(JCStatement body, JCExpression cond) {
1054 this.body = body;
1055 this.cond = cond;
1056 }
1057 @Override
1058 public void accept(Visitor v) { v.visitDoLoop(this); }
1059
1060 @DefinedBy(Api.COMPILER_TREE)
1061 public Kind getKind() { return Kind.DO_WHILE_LOOP; }
1062 @DefinedBy(Api.COMPILER_TREE)
1063 public JCExpression getCondition() { return cond; }
1064 @DefinedBy(Api.COMPILER_TREE)
1065 public JCStatement getStatement() { return body; }
1066 @Override @DefinedBy(Api.COMPILER_TREE)
1067 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1068 return v.visitDoWhileLoop(this, d);
1069 }
1070
1071 @Override
1072 public Tag getTag() {
1073 return DOLOOP;
1074 }
1075 }
1076
1077 /**
1078 * A while loop
1079 */
1080 public static class JCWhileLoop extends JCStatement implements WhileLoopTree {
1081 public JCExpression cond;
1082 public JCStatement body;
1083 protected JCWhileLoop(JCExpression cond, JCStatement body) {
1084 this.cond = cond;
1085 this.body = body;
1086 }
1087 @Override
1088 public void accept(Visitor v) { v.visitWhileLoop(this); }
1089
1090 @DefinedBy(Api.COMPILER_TREE)
1091 public Kind getKind() { return Kind.WHILE_LOOP; }
1092 @DefinedBy(Api.COMPILER_TREE)
1093 public JCExpression getCondition() { return cond; }
1094 @DefinedBy(Api.COMPILER_TREE)
1095 public JCStatement getStatement() { return body; }
1096 @Override @DefinedBy(Api.COMPILER_TREE)
1097 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1098 return v.visitWhileLoop(this, d);
1099 }
1100
1101 @Override
1102 public Tag getTag() {
1103 return WHILELOOP;
1104 }
1105 }
1106
1107 /**
1108 * A for loop.
1109 */
1110 public static class JCForLoop extends JCStatement implements ForLoopTree {
1111 public List<JCStatement> init;
1112 public JCExpression cond;
1113 public List<JCExpressionStatement> step;
1114 public JCStatement body;
1115 protected JCForLoop(List<JCStatement> init,
1116 JCExpression cond,
1117 List<JCExpressionStatement> update,
1118 JCStatement body)
1119 {
1120 this.init = init;
1121 this.cond = cond;
1122 this.step = update;
1123 this.body = body;
1124 }
1125 @Override
1126 public void accept(Visitor v) { v.visitForLoop(this); }
1127
1128 @DefinedBy(Api.COMPILER_TREE)
1129 public Kind getKind() { return Kind.FOR_LOOP; }
1130 @DefinedBy(Api.COMPILER_TREE)
1131 public JCExpression getCondition() { return cond; }
1132 @DefinedBy(Api.COMPILER_TREE)
1133 public JCStatement getStatement() { return body; }
1134 @DefinedBy(Api.COMPILER_TREE)
1135 public List<JCStatement> getInitializer() {
1136 return init;
1137 }
1138 @DefinedBy(Api.COMPILER_TREE)
1139 public List<JCExpressionStatement> getUpdate() {
1140 return step;
1141 }
1142 @Override @DefinedBy(Api.COMPILER_TREE)
1143 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1144 return v.visitForLoop(this, d);
1145 }
1146
1147 @Override
1148 public Tag getTag() {
1149 return FORLOOP;
1150 }
1151 }
1152
1153 /**
1154 * The enhanced for loop.
1155 */
1156 public static class JCEnhancedForLoop extends JCStatement implements EnhancedForLoopTree {
1157 public JCVariableDecl var;
1158 public JCExpression expr;
1159 public JCStatement body;
1160 protected JCEnhancedForLoop(JCVariableDecl var, JCExpression expr, JCStatement body) {
1161 this.var = var;
1162 this.expr = expr;
1163 this.body = body;
1164 }
1165 @Override
1166 public void accept(Visitor v) { v.visitForeachLoop(this); }
1167
1168 @DefinedBy(Api.COMPILER_TREE)
1169 public Kind getKind() { return Kind.ENHANCED_FOR_LOOP; }
1170 @DefinedBy(Api.COMPILER_TREE)
1171 public JCVariableDecl getVariable() { return var; }
1172 @DefinedBy(Api.COMPILER_TREE)
1173 public JCExpression getExpression() { return expr; }
1174 @DefinedBy(Api.COMPILER_TREE)
1175 public JCStatement getStatement() { return body; }
1176 @Override @DefinedBy(Api.COMPILER_TREE)
1177 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1178 return v.visitEnhancedForLoop(this, d);
1179 }
1180 @Override
1181 public Tag getTag() {
1182 return FOREACHLOOP;
1183 }
1184 }
1185
1186 /**
1187 * A labelled expression or statement.
1188 */
1189 public static class JCLabeledStatement extends JCStatement implements LabeledStatementTree {
1190 public Name label;
1191 public JCStatement body;
1192 protected JCLabeledStatement(Name label, JCStatement body) {
1193 this.label = label;
1194 this.body = body;
1195 }
1196 @Override
1197 public void accept(Visitor v) { v.visitLabelled(this); }
1198 @DefinedBy(Api.COMPILER_TREE)
1199 public Kind getKind() { return Kind.LABELED_STATEMENT; }
1200 @DefinedBy(Api.COMPILER_TREE)
1201 public Name getLabel() { return label; }
1202 @DefinedBy(Api.COMPILER_TREE)
1203 public JCStatement getStatement() { return body; }
1204 @Override @DefinedBy(Api.COMPILER_TREE)
1205 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1206 return v.visitLabeledStatement(this, d);
1207 }
1208 @Override
1209 public Tag getTag() {
1210 return LABELLED;
1211 }
1212 }
1213
1214 /**
1215 * A "switch ( ) { }" construction.
1216 */
1217 public static class JCSwitch extends JCStatement implements SwitchTree {
1218 public JCExpression selector;
1219 public List<JCCase> cases;
1220 protected JCSwitch(JCExpression selector, List<JCCase> cases) {
1221 this.selector = selector;
1222 this.cases = cases;
1223 }
1224 @Override
1225 public void accept(Visitor v) { v.visitSwitch(this); }
1226
1227 @DefinedBy(Api.COMPILER_TREE)
1228 public Kind getKind() { return Kind.SWITCH; }
1229 @DefinedBy(Api.COMPILER_TREE)
1230 public JCExpression getExpression() { return selector; }
1231 @DefinedBy(Api.COMPILER_TREE)
1232 public List<JCCase> getCases() { return cases; }
1233 @Override @DefinedBy(Api.COMPILER_TREE)
1234 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1235 return v.visitSwitch(this, d);
1236 }
1237 @Override
1238 public Tag getTag() {
1239 return SWITCH;
1240 }
1241 }
1242
1243 /**
1244 * A "case :" of a switch.
1245 */
1246 public static class JCCase extends JCStatement implements CaseTree {
1247 //as CaseKind is deprecated for removal (as it is part of a preview feature),
1248 //using indirection through these fields to avoid unnecessary @SuppressWarnings:
1249 @SuppressWarnings("removal")
1250 public static final CaseKind STATEMENT = CaseKind.STATEMENT;
1251 @SuppressWarnings("removal")
1252 public static final CaseKind RULE = CaseKind.RULE;
1253 @SuppressWarnings("removal")
1254 public final CaseKind caseKind;
1255 public List<JCExpression> pats;
1256 public List<JCStatement> stats;
1257 public JCTree body;
1258 public boolean completesNormally;
1259 protected JCCase(@SuppressWarnings("removal") CaseKind caseKind, List<JCExpression> pats,
1260 List<JCStatement> stats, JCTree body) {
1261 Assert.checkNonNull(pats);
1262 Assert.check(pats.isEmpty() || pats.head != null);
1263 this.caseKind = caseKind;
1264 this.pats = pats;
1265 this.stats = stats;
1266 this.body = body;
1267 }
1268 @Override
1269 public void accept(Visitor v) { v.visitCase(this); }
1270
1271 @Override @DefinedBy(Api.COMPILER_TREE)
1272 public Kind getKind() { return Kind.CASE; }
1273 @Override @DefinedBy(Api.COMPILER_TREE)
1274 public JCExpression getExpression() { return pats.head; }
1275 @Override @DefinedBy(Api.COMPILER_TREE)
1276 @SuppressWarnings("removal")
1277 public List<JCExpression> getExpressions() { return pats; }
1278 @Override @DefinedBy(Api.COMPILER_TREE)
1279 @SuppressWarnings("removal")
1280 public List<JCStatement> getStatements() {
1281 return caseKind == CaseKind.STATEMENT ? stats : null;
1282 }
1283 @Override @DefinedBy(Api.COMPILER_TREE)
1284 @SuppressWarnings("removal")
1285 public JCTree getBody() { return body; }
1286 @Override @DefinedBy(Api.COMPILER_TREE)
1287 @SuppressWarnings("removal")
1288 public CaseKind getCaseKind() {
1289 return caseKind;
1290 }
1291 @Override @DefinedBy(Api.COMPILER_TREE)
1292 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1293 return v.visitCase(this, d);
1294 }
1295 @Override
1296 public Tag getTag() {
1297 return CASE;
1298 }
1299 }
1300
1301 /**
1302 * A "switch ( ) { }" construction.
1303 */
1304 @SuppressWarnings("removal")
1305 public static class JCSwitchExpression extends JCPolyExpression implements SwitchExpressionTree {
1306 public JCExpression selector;
1307 public List<JCCase> cases;
1308 protected JCSwitchExpression(JCExpression selector, List<JCCase> cases) {
1309 this.selector = selector;
1310 this.cases = cases;
1311 }
1312 @Override
1313 public void accept(Visitor v) { v.visitSwitchExpression(this); }
1314
1315 @DefinedBy(Api.COMPILER_TREE)
1316 public Kind getKind() { return Kind.SWITCH_EXPRESSION; }
1317 @DefinedBy(Api.COMPILER_TREE)
1318 public JCExpression getExpression() { return selector; }
1319 @DefinedBy(Api.COMPILER_TREE)
1320 public List<JCCase> getCases() { return cases; }
1321 @Override @DefinedBy(Api.COMPILER_TREE)
1322 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1323 return v.visitSwitchExpression(this, d);
1324 }
1325 @Override
1326 public Tag getTag() {
1327 return SWITCH_EXPRESSION;
1328 }
1329 }
1330
1331 /**
1332 * A synchronized block.
1333 */
1334 public static class JCSynchronized extends JCStatement implements SynchronizedTree {
1335 public JCExpression lock;
1336 public JCBlock body;
1337 protected JCSynchronized(JCExpression lock, JCBlock body) {
1338 this.lock = lock;
1339 this.body = body;
1340 }
1341 @Override
1342 public void accept(Visitor v) { v.visitSynchronized(this); }
1343
1344 @DefinedBy(Api.COMPILER_TREE)
1345 public Kind getKind() { return Kind.SYNCHRONIZED; }
1346 @DefinedBy(Api.COMPILER_TREE)
1347 public JCExpression getExpression() { return lock; }
1348 @DefinedBy(Api.COMPILER_TREE)
1349 public JCBlock getBlock() { return body; }
1350 @Override @DefinedBy(Api.COMPILER_TREE)
1351 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1352 return v.visitSynchronized(this, d);
1353 }
1354 @Override
1355 public Tag getTag() {
1356 return SYNCHRONIZED;
1357 }
1358 }
1359
1360 /**
1361 * A "try { } catch ( ) { } finally { }" block.
1362 */
1363 public static class JCTry extends JCStatement implements TryTree {
1364 public JCBlock body;
1365 public List<JCCatch> catchers;
1366 public JCBlock finalizer;
1367 public List<JCTree> resources;
1368 public boolean finallyCanCompleteNormally;
1369 protected JCTry(List<JCTree> resources,
1370 JCBlock body,
1371 List<JCCatch> catchers,
1372 JCBlock finalizer) {
1373 this.body = body;
1374 this.catchers = catchers;
1375 this.finalizer = finalizer;
1376 this.resources = resources;
1377 }
1378 @Override
1379 public void accept(Visitor v) { v.visitTry(this); }
1380
1381 @DefinedBy(Api.COMPILER_TREE)
1382 public Kind getKind() { return Kind.TRY; }
1383 @DefinedBy(Api.COMPILER_TREE)
1384 public JCBlock getBlock() { return body; }
1385 @DefinedBy(Api.COMPILER_TREE)
1386 public List<JCCatch> getCatches() {
1387 return catchers;
1388 }
1389 @DefinedBy(Api.COMPILER_TREE)
1390 public JCBlock getFinallyBlock() { return finalizer; }
1391 @Override @DefinedBy(Api.COMPILER_TREE)
1392 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1393 return v.visitTry(this, d);
1394 }
1395 @Override @DefinedBy(Api.COMPILER_TREE)
1396 public List<JCTree> getResources() {
1397 return resources;
1398 }
1399 @Override
1400 public Tag getTag() {
1401 return TRY;
1402 }
1403 }
1404
1405 /**
1406 * A catch block.
1407 */
1408 public static class JCCatch extends JCTree implements CatchTree {
1409 public JCVariableDecl param;
1410 public JCBlock body;
1411 protected JCCatch(JCVariableDecl param, JCBlock body) {
1412 this.param = param;
1413 this.body = body;
1414 }
1415 @Override
1416 public void accept(Visitor v) { v.visitCatch(this); }
1417
1418 @DefinedBy(Api.COMPILER_TREE)
1419 public Kind getKind() { return Kind.CATCH; }
1420 @DefinedBy(Api.COMPILER_TREE)
1421 public JCVariableDecl getParameter() { return param; }
1422 @DefinedBy(Api.COMPILER_TREE)
1423 public JCBlock getBlock() { return body; }
1424 @Override @DefinedBy(Api.COMPILER_TREE)
1425 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1426 return v.visitCatch(this, d);
1427 }
1428 @Override
1429 public Tag getTag() {
1430 return CATCH;
1431 }
1432 }
1433
1434 /**
1435 * A ( ) ? ( ) : ( ) conditional expression
1436 */
1437 public static class JCConditional extends JCPolyExpression implements ConditionalExpressionTree {
1438 public JCExpression cond;
1439 public JCExpression truepart;
1440 public JCExpression falsepart;
1441 protected JCConditional(JCExpression cond,
1442 JCExpression truepart,
1443 JCExpression falsepart)
1444 {
1445 this.cond = cond;
1446 this.truepart = truepart;
1447 this.falsepart = falsepart;
1448 }
1449 @Override
1450 public void accept(Visitor v) { v.visitConditional(this); }
1451
1452 @DefinedBy(Api.COMPILER_TREE)
1453 public Kind getKind() { return Kind.CONDITIONAL_EXPRESSION; }
1454 @DefinedBy(Api.COMPILER_TREE)
1455 public JCExpression getCondition() { return cond; }
1456 @DefinedBy(Api.COMPILER_TREE)
1457 public JCExpression getTrueExpression() { return truepart; }
1458 @DefinedBy(Api.COMPILER_TREE)
1459 public JCExpression getFalseExpression() { return falsepart; }
1460 @Override @DefinedBy(Api.COMPILER_TREE)
1461 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1462 return v.visitConditionalExpression(this, d);
1463 }
1464 @Override
1465 public Tag getTag() {
1466 return CONDEXPR;
1467 }
1468 }
1469
1470 /**
1471 * An "if ( ) { } else { }" block
1472 */
1473 public static class JCIf extends JCStatement implements IfTree {
1474 public JCExpression cond;
1475 public JCStatement thenpart;
1476 public JCStatement elsepart;
1477 protected JCIf(JCExpression cond,
1478 JCStatement thenpart,
1479 JCStatement elsepart)
1480 {
1481 this.cond = cond;
1482 this.thenpart = thenpart;
1483 this.elsepart = elsepart;
1484 }
1485 @Override
1486 public void accept(Visitor v) { v.visitIf(this); }
1487
1488 @DefinedBy(Api.COMPILER_TREE)
1489 public Kind getKind() { return Kind.IF; }
1490 @DefinedBy(Api.COMPILER_TREE)
1491 public JCExpression getCondition() { return cond; }
1492 @DefinedBy(Api.COMPILER_TREE)
1493 public JCStatement getThenStatement() { return thenpart; }
1494 @DefinedBy(Api.COMPILER_TREE)
1495 public JCStatement getElseStatement() { return elsepart; }
1496 @Override @DefinedBy(Api.COMPILER_TREE)
1497 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1498 return v.visitIf(this, d);
1499 }
1500 @Override
1501 public Tag getTag() {
1502 return IF;
1503 }
1504 }
1505
1506 /**
1507 * an expression statement
1508 */
1509 public static class JCExpressionStatement extends JCStatement implements ExpressionStatementTree {
1510 /** expression structure */
1511 public JCExpression expr;
1512 protected JCExpressionStatement(JCExpression expr)
1513 {
1514 this.expr = expr;
1515 }
1516 @Override
1517 public void accept(Visitor v) { v.visitExec(this); }
1518
1519 @DefinedBy(Api.COMPILER_TREE)
1520 public Kind getKind() { return Kind.EXPRESSION_STATEMENT; }
1521 @DefinedBy(Api.COMPILER_TREE)
1522 public JCExpression getExpression() { return expr; }
1523 @Override @DefinedBy(Api.COMPILER_TREE)
1524 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1525 return v.visitExpressionStatement(this, d);
1526 }
1527 @Override
1528 public Tag getTag() {
1529 return EXEC;
1530 }
1531
1532 /** Convert a expression-statement tree to a pretty-printed string. */
1533 @Override
1534 public String toString() {
1535 StringWriter s = new StringWriter();
1536 try {
1537 new Pretty(s, false).printStat(this);
1538 }
1539 catch (IOException e) {
1540 // should never happen, because StringWriter is defined
1541 // never to throw any IOExceptions
1542 throw new AssertionError(e);
1543 }
1544 return s.toString();
1545 }
1546 }
1547
1548 /**
1549 * A break from a loop or switch.
1550 */
1551 public static class JCBreak extends JCStatement implements BreakTree {
1552 public JCExpression value;
1553 public JCTree target;
1554 protected JCBreak(JCExpression value, JCTree target) {
1555 this.value = value;
1556 this.target = target;
1557 }
1558 @Override
1559 public void accept(Visitor v) { v.visitBreak(this); }
1560 public boolean isValueBreak() {
1561 return target != null && target.hasTag(SWITCH_EXPRESSION);
1562 }
1563
1564 @DefinedBy(Api.COMPILER_TREE)
1565 public Kind getKind() { return Kind.BREAK; }
1566 @DefinedBy(Api.COMPILER_TREE)
1567 public Name getLabel() {
1568 return value != null && value.getKind() == Kind.IDENTIFIER ? ((JCIdent) value).getName() : null;
1569 }
1570 @DefinedBy(Api.COMPILER_TREE)
1571 @SuppressWarnings("removal")
1572 public JCExpression getValue() { return value; }
1573 @Override @DefinedBy(Api.COMPILER_TREE)
1574 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1575 return v.visitBreak(this, d);
1576 }
1577 @Override
1578 public Tag getTag() {
1579 return BREAK;
1580 }
1581 }
1582
1583 /**
1584 * A continue of a loop.
1585 */
1586 public static class JCContinue extends JCStatement implements ContinueTree {
1587 public Name label;
1588 public JCTree target;
1589 protected JCContinue(Name label, JCTree target) {
1590 this.label = label;
1591 this.target = target;
1592 }
1593 @Override
1594 public void accept(Visitor v) { v.visitContinue(this); }
1595
1596 @DefinedBy(Api.COMPILER_TREE)
1597 public Kind getKind() { return Kind.CONTINUE; }
1598 @DefinedBy(Api.COMPILER_TREE)
1599 public Name getLabel() { return label; }
1600 @Override @DefinedBy(Api.COMPILER_TREE)
1601 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1602 return v.visitContinue(this, d);
1603 }
1604 @Override
1605 public Tag getTag() {
1606 return CONTINUE;
1607 }
1608 }
1609
1610 /**
1611 * A return statement.
1612 */
1613 public static class JCReturn extends JCStatement implements ReturnTree {
1614 public JCExpression expr;
1615 protected JCReturn(JCExpression expr) {
1616 this.expr = expr;
1617 }
1618 @Override
1619 public void accept(Visitor v) { v.visitReturn(this); }
1620
1621 @DefinedBy(Api.COMPILER_TREE)
1622 public Kind getKind() { return Kind.RETURN; }
1623 @DefinedBy(Api.COMPILER_TREE)
1624 public JCExpression getExpression() { return expr; }
1625 @Override @DefinedBy(Api.COMPILER_TREE)
1626 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1627 return v.visitReturn(this, d);
1628 }
1629 @Override
1630 public Tag getTag() {
1631 return RETURN;
1632 }
1633 }
1634
1635 /**
1636 * A throw statement.
1637 */
1638 public static class JCThrow extends JCStatement implements ThrowTree {
1639 public JCExpression expr;
1640 protected JCThrow(JCExpression expr) {
1641 this.expr = expr;
1642 }
1643 @Override
1644 public void accept(Visitor v) { v.visitThrow(this); }
1645
1646 @DefinedBy(Api.COMPILER_TREE)
1647 public Kind getKind() { return Kind.THROW; }
1648 @DefinedBy(Api.COMPILER_TREE)
1649 public JCExpression getExpression() { return expr; }
1650 @Override @DefinedBy(Api.COMPILER_TREE)
1651 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1652 return v.visitThrow(this, d);
1653 }
1654 @Override
1655 public Tag getTag() {
1656 return THROW;
1657 }
1658 }
1659
1660 /**
1661 * An assert statement.
1662 */
1663 public static class JCAssert extends JCStatement implements AssertTree {
1664 public JCExpression cond;
1665 public JCExpression detail;
1666 protected JCAssert(JCExpression cond, JCExpression detail) {
1667 this.cond = cond;
1668 this.detail = detail;
1669 }
1670 @Override
1671 public void accept(Visitor v) { v.visitAssert(this); }
1672
1673 @DefinedBy(Api.COMPILER_TREE)
1674 public Kind getKind() { return Kind.ASSERT; }
1675 @DefinedBy(Api.COMPILER_TREE)
1676 public JCExpression getCondition() { return cond; }
1677 @DefinedBy(Api.COMPILER_TREE)
1678 public JCExpression getDetail() { return detail; }
1679 @Override @DefinedBy(Api.COMPILER_TREE)
1680 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1681 return v.visitAssert(this, d);
1682 }
1683 @Override
1684 public Tag getTag() {
1685 return ASSERT;
1686 }
1687 }
1688
1689 /**
1690 * A method invocation
1691 */
1692 public static class JCMethodInvocation extends JCPolyExpression implements MethodInvocationTree {
1693 public List<JCExpression> typeargs;
1694 public JCExpression meth;
1695 public List<JCExpression> args;
1696 public Type varargsElement;
1697 protected JCMethodInvocation(List<JCExpression> typeargs,
1698 JCExpression meth,
1699 List<JCExpression> args)
1700 {
1701 this.typeargs = (typeargs == null) ? List.nil()
1702 : typeargs;
1703 this.meth = meth;
1704 this.args = args;
1705 }
1706 @Override
1707 public void accept(Visitor v) { v.visitApply(this); }
1708
1709 @DefinedBy(Api.COMPILER_TREE)
1710 public Kind getKind() { return Kind.METHOD_INVOCATION; }
1711 @DefinedBy(Api.COMPILER_TREE)
1712 public List<JCExpression> getTypeArguments() {
1713 return typeargs;
1714 }
1715 @DefinedBy(Api.COMPILER_TREE)
1716 public JCExpression getMethodSelect() { return meth; }
1717 @DefinedBy(Api.COMPILER_TREE)
1718 public List<JCExpression> getArguments() {
1719 return args;
1720 }
1721 @Override @DefinedBy(Api.COMPILER_TREE)
1722 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1723 return v.visitMethodInvocation(this, d);
1724 }
1725 @Override
1726 public JCMethodInvocation setType(Type type) {
1727 super.setType(type);
1728 return this;
1729 }
1730 @Override
1731 public Tag getTag() {
1732 return(APPLY);
1733 }
1734 }
1735
1736 /**
1737 * A new(...) operation.
1738 */
1739 public static class JCNewClass extends JCPolyExpression implements NewClassTree {
1740 public JCExpression encl;
1741 public List<JCExpression> typeargs;
1742 public JCExpression clazz;
1743 public List<JCExpression> args;
1744 public JCClassDecl def;
1745 public Symbol constructor;
1746 public Type varargsElement;
1747 public Type constructorType;
1748 protected JCNewClass(JCExpression encl,
1749 List<JCExpression> typeargs,
1750 JCExpression clazz,
1751 List<JCExpression> args,
1752 JCClassDecl def)
1753 {
1754 this.encl = encl;
1755 this.typeargs = (typeargs == null) ? List.nil()
1756 : typeargs;
1757 this.clazz = clazz;
1758 this.args = args;
1759 this.def = def;
1760 }
1761 @Override
1762 public void accept(Visitor v) { v.visitNewClass(this); }
1763
1764 @DefinedBy(Api.COMPILER_TREE)
1765 public Kind getKind() { return Kind.NEW_CLASS; }
1766 @DefinedBy(Api.COMPILER_TREE)
1767 public JCExpression getEnclosingExpression() { // expr.new C< ... > ( ... )
1768 return encl;
1769 }
1770 @DefinedBy(Api.COMPILER_TREE)
1771 public List<JCExpression> getTypeArguments() {
1772 return typeargs;
1773 }
1774 @DefinedBy(Api.COMPILER_TREE)
1775 public JCExpression getIdentifier() { return clazz; }
1776 @DefinedBy(Api.COMPILER_TREE)
1777 public List<JCExpression> getArguments() {
1778 return args;
1779 }
1780 @DefinedBy(Api.COMPILER_TREE)
1781 public JCClassDecl getClassBody() { return def; }
1782 @Override @DefinedBy(Api.COMPILER_TREE)
1783 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1784 return v.visitNewClass(this, d);
1785 }
1786 @Override
1787 public Tag getTag() {
1788 return NEWCLASS;
1789 }
1790 }
1791
1792 /**
1793 * A new[...] operation.
1794 */
1795 public static class JCNewArray extends JCExpression implements NewArrayTree {
1796 public JCExpression elemtype;
1797 public List<JCExpression> dims;
1798 // type annotations on inner-most component
1799 public List<JCAnnotation> annotations;
1800 // type annotations on dimensions
1801 public List<List<JCAnnotation>> dimAnnotations;
1802 public List<JCExpression> elems;
1803 protected JCNewArray(JCExpression elemtype,
1804 List<JCExpression> dims,
1805 List<JCExpression> elems)
1806 {
1807 this.elemtype = elemtype;
1808 this.dims = dims;
1809 this.annotations = List.nil();
1810 this.dimAnnotations = List.nil();
1811 this.elems = elems;
1812 }
1813 @Override
1814 public void accept(Visitor v) { v.visitNewArray(this); }
1815
1816 @DefinedBy(Api.COMPILER_TREE)
1817 public Kind getKind() { return Kind.NEW_ARRAY; }
1818 @DefinedBy(Api.COMPILER_TREE)
1819 public JCExpression getType() { return elemtype; }
1820 @DefinedBy(Api.COMPILER_TREE)
1821 public List<JCExpression> getDimensions() {
1822 return dims;
1823 }
1824 @DefinedBy(Api.COMPILER_TREE)
1825 public List<JCExpression> getInitializers() {
1826 return elems;
1827 }
1828 @Override @DefinedBy(Api.COMPILER_TREE)
1829 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1830 return v.visitNewArray(this, d);
1831 }
1832 @Override
1833 public Tag getTag() {
1834 return NEWARRAY;
1835 }
1836
1837 @Override @DefinedBy(Api.COMPILER_TREE)
1838 public List<JCAnnotation> getAnnotations() {
1839 return annotations;
1840 }
1841
1842 @Override @DefinedBy(Api.COMPILER_TREE)
1843 public List<List<JCAnnotation>> getDimAnnotations() {
1844 return dimAnnotations;
1845 }
1846 }
1847
1848 /**
1849 * A lambda expression.
1850 */
1851 public static class JCLambda extends JCFunctionalExpression implements LambdaExpressionTree {
1852
1853 public enum ParameterKind {
1854 IMPLICIT,
1855 EXPLICIT
1856 }
1857
1858 public List<JCVariableDecl> params;
1859 public JCTree body;
1860 public boolean canCompleteNormally = true;
1861 public ParameterKind paramKind;
1862
1863 public JCLambda(List<JCVariableDecl> params,
1864 JCTree body) {
1865 this.params = params;
1866 this.body = body;
1867 if (params.isEmpty() ||
1868 params.head.vartype != null) {
1869 paramKind = ParameterKind.EXPLICIT;
1870 } else {
1871 paramKind = ParameterKind.IMPLICIT;
1872 }
1873 }
1874 @Override
1875 public Tag getTag() {
1876 return LAMBDA;
1877 }
1878 @Override
1879 public void accept(Visitor v) {
1880 v.visitLambda(this);
1881 }
1882 @Override @DefinedBy(Api.COMPILER_TREE)
1883 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
1884 return v.visitLambdaExpression(this, d);
1885 }
1886 @DefinedBy(Api.COMPILER_TREE)
1887 public Kind getKind() {
1888 return Kind.LAMBDA_EXPRESSION;
1889 }
1890 @DefinedBy(Api.COMPILER_TREE)
1891 public JCTree getBody() {
1892 return body;
1893 }
1894 @DefinedBy(Api.COMPILER_TREE)
1895 public java.util.List<? extends VariableTree> getParameters() {
1896 return params;
1897 }
1898 @Override
1899 public JCLambda setType(Type type) {
1900 super.setType(type);
1901 return this;
1902 }
1903 @Override @DefinedBy(Api.COMPILER_TREE)
1904 public BodyKind getBodyKind() {
1905 return body.hasTag(BLOCK) ?
1906 BodyKind.STATEMENT :
1907 BodyKind.EXPRESSION;
1908 }
1909 }
1910
1911 /**
1912 * A parenthesized subexpression ( ... )
1913 */
1914 public static class JCParens extends JCExpression implements ParenthesizedTree {
1915 public JCExpression expr;
1916 protected JCParens(JCExpression expr) {
1917 this.expr = expr;
1918 }
1919 @Override
1920 public void accept(Visitor v) { v.visitParens(this); }
1921
1922 @DefinedBy(Api.COMPILER_TREE)
1923 public Kind getKind() { return Kind.PARENTHESIZED; }
1924 @DefinedBy(Api.COMPILER_TREE)
1925 public JCExpression getExpression() { return expr; }
1926 @Override @DefinedBy(Api.COMPILER_TREE)
1927 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1928 return v.visitParenthesized(this, d);
1929 }
1930 @Override
1931 public Tag getTag() {
1932 return PARENS;
1933 }
1934 }
1935
1936 /**
1937 * A assignment with "=".
1938 */
1939 public static class JCAssign extends JCExpression implements AssignmentTree {
1940 public JCExpression lhs;
1941 public JCExpression rhs;
1942 protected JCAssign(JCExpression lhs, JCExpression rhs) {
1943 this.lhs = lhs;
1944 this.rhs = rhs;
1945 }
1946 @Override
1947 public void accept(Visitor v) { v.visitAssign(this); }
1948
1949 @DefinedBy(Api.COMPILER_TREE)
1950 public Kind getKind() { return Kind.ASSIGNMENT; }
1951 @DefinedBy(Api.COMPILER_TREE)
1952 public JCExpression getVariable() { return lhs; }
1953 @DefinedBy(Api.COMPILER_TREE)
1954 public JCExpression getExpression() { return rhs; }
1955 @Override @DefinedBy(Api.COMPILER_TREE)
1956 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
1957 return v.visitAssignment(this, d);
1958 }
1959 @Override
1960 public Tag getTag() {
1961 return ASSIGN;
1962 }
1963 }
1964
1965 public static abstract class JCOperatorExpression extends JCExpression {
1966 public enum OperandPos {
1967 LEFT,
1968 RIGHT
1969 }
1970
1971 protected Tag opcode;
1972 public OperatorSymbol operator;
1973
1974 public OperatorSymbol getOperator() {
1975 return operator;
1976 }
1977
1978 @Override
1979 public Tag getTag() {
1980 return opcode;
1981 }
1982
1983 public abstract JCExpression getOperand(OperandPos pos);
1984 }
1985
1986 /**
1987 * An assignment with "+=", "|=" ...
1988 */
1989 public static class JCAssignOp extends JCOperatorExpression implements CompoundAssignmentTree {
1990 public JCExpression lhs;
1991 public JCExpression rhs;
1992 protected JCAssignOp(Tag opcode, JCTree lhs, JCTree rhs, OperatorSymbol operator) {
1993 this.opcode = opcode;
1994 this.lhs = (JCExpression)lhs;
1995 this.rhs = (JCExpression)rhs;
1996 this.operator = operator;
1997 }
1998 @Override
1999 public void accept(Visitor v) { v.visitAssignop(this); }
2000
2001 @DefinedBy(Api.COMPILER_TREE)
2002 public Kind getKind() { return TreeInfo.tagToKind(getTag()); }
2003 @DefinedBy(Api.COMPILER_TREE)
2004 public JCExpression getVariable() { return lhs; }
2005 @DefinedBy(Api.COMPILER_TREE)
2006 public JCExpression getExpression() { return rhs; }
2007 @Override @DefinedBy(Api.COMPILER_TREE)
2008 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2009 return v.visitCompoundAssignment(this, d);
2010 }
2011 @Override
2012 public JCExpression getOperand(OperandPos pos) {
2013 return pos == OperandPos.LEFT ? lhs : rhs;
2014 }
2015 }
2016
2017 /**
2018 * A unary operation.
2019 */
2020 public static class JCUnary extends JCOperatorExpression implements UnaryTree {
2021 public JCExpression arg;
2022 protected JCUnary(Tag opcode, JCExpression arg) {
2023 this.opcode = opcode;
2024 this.arg = arg;
2025 }
2026 @Override
2027 public void accept(Visitor v) { v.visitUnary(this); }
2028
2029 @DefinedBy(Api.COMPILER_TREE)
2030 public Kind getKind() { return TreeInfo.tagToKind(getTag()); }
2031 @DefinedBy(Api.COMPILER_TREE)
2032 public JCExpression getExpression() { return arg; }
2033 @Override @DefinedBy(Api.COMPILER_TREE)
2034 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2035 return v.visitUnary(this, d);
2036 }
2037 public void setTag(Tag tag) {
2038 opcode = tag;
2039 }
2040 @Override
2041 public JCExpression getOperand(OperandPos pos) {
2042 return arg;
2043 }
2044 }
2045
2046 /**
2047 * A binary operation.
2048 */
2049 public static class JCBinary extends JCOperatorExpression implements BinaryTree {
2050 public JCExpression lhs;
2051 public JCExpression rhs;
2052 protected JCBinary(Tag opcode,
2053 JCExpression lhs,
2054 JCExpression rhs,
2055 OperatorSymbol operator) {
2056 this.opcode = opcode;
2057 this.lhs = lhs;
2058 this.rhs = rhs;
2059 this.operator = operator;
2060 }
2061 @Override
2062 public void accept(Visitor v) { v.visitBinary(this); }
2063
2064 @DefinedBy(Api.COMPILER_TREE)
2065 public Kind getKind() { return TreeInfo.tagToKind(getTag()); }
2066 @DefinedBy(Api.COMPILER_TREE)
2067 public JCExpression getLeftOperand() { return lhs; }
2068 @DefinedBy(Api.COMPILER_TREE)
2069 public JCExpression getRightOperand() { return rhs; }
2070 @Override @DefinedBy(Api.COMPILER_TREE)
2071 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2072 return v.visitBinary(this, d);
2073 }
2074 @Override
2075 public JCExpression getOperand(OperandPos pos) {
2076 return pos == OperandPos.LEFT ? lhs : rhs;
2077 }
2078 }
2079
2080 /**
2081 * A type cast.
2082 */
2083 public static class JCTypeCast extends JCExpression implements TypeCastTree {
2084 public JCTree clazz;
2085 public JCExpression expr;
2086 protected JCTypeCast(JCTree clazz, JCExpression expr) {
2087 this.clazz = clazz;
2088 this.expr = expr;
2089 }
2090 @Override
2091 public void accept(Visitor v) { v.visitTypeCast(this); }
2092
2093 @DefinedBy(Api.COMPILER_TREE)
2094 public Kind getKind() { return Kind.TYPE_CAST; }
2095 @DefinedBy(Api.COMPILER_TREE)
2096 public JCTree getType() { return clazz; }
2097 @DefinedBy(Api.COMPILER_TREE)
2098 public JCExpression getExpression() { return expr; }
2099 @Override @DefinedBy(Api.COMPILER_TREE)
2100 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2101 return v.visitTypeCast(this, d);
2102 }
2103 @Override
2104 public Tag getTag() {
2105 return TYPECAST;
2106 }
2107 }
2108
2109 /**
2110 * A type test.
2111 */
2112 public static class JCInstanceOf extends JCExpression implements InstanceOfTree {
2113 public JCExpression expr;
2114 public JCTree clazz;
2115 protected JCInstanceOf(JCExpression expr, JCTree clazz) {
2116 this.expr = expr;
2117 this.clazz = clazz;
2118 }
2119 @Override
2120 public void accept(Visitor v) { v.visitTypeTest(this); }
2121
2122 @DefinedBy(Api.COMPILER_TREE)
2123 public Kind getKind() { return Kind.INSTANCE_OF; }
2124 @DefinedBy(Api.COMPILER_TREE)
2125 public JCTree getType() { return clazz; }
2126 @DefinedBy(Api.COMPILER_TREE)
2127 public JCExpression getExpression() { return expr; }
2128 @Override @DefinedBy(Api.COMPILER_TREE)
2129 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2130 return v.visitInstanceOf(this, d);
2131 }
2132 @Override
2133 public Tag getTag() {
2134 return TYPETEST;
2135 }
2136 }
2137
2138 /**
2139 * An array selection
2140 */
2141 public static class JCArrayAccess extends JCExpression implements ArrayAccessTree {
2142 public JCExpression indexed;
2143 public JCExpression index;
2144 protected JCArrayAccess(JCExpression indexed, JCExpression index) {
2145 this.indexed = indexed;
2146 this.index = index;
2147 }
2148 @Override
2149 public void accept(Visitor v) { v.visitIndexed(this); }
2150
2151 @DefinedBy(Api.COMPILER_TREE)
2152 public Kind getKind() { return Kind.ARRAY_ACCESS; }
2153 @DefinedBy(Api.COMPILER_TREE)
2154 public JCExpression getExpression() { return indexed; }
2155 @DefinedBy(Api.COMPILER_TREE)
2156 public JCExpression getIndex() { return index; }
2157 @Override @DefinedBy(Api.COMPILER_TREE)
2158 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2159 return v.visitArrayAccess(this, d);
2160 }
2161 @Override
2162 public Tag getTag() {
2163 return INDEXED;
2164 }
2165 }
2166
2167 /**
2168 * Selects through packages and classes
2169 */
2170 public static class JCFieldAccess extends JCExpression implements MemberSelectTree {
2171 /** selected Tree hierarchy */
2172 public JCExpression selected;
2173 /** name of field to select thru */
2174 public Name name;
2175 /** symbol of the selected class */
2176 public Symbol sym;
2177 protected JCFieldAccess(JCExpression selected, Name name, Symbol sym) {
2178 this.selected = selected;
2179 this.name = name;
2180 this.sym = sym;
2181 }
2182 @Override
2183 public void accept(Visitor v) { v.visitSelect(this); }
2184
2185 @DefinedBy(Api.COMPILER_TREE)
2186 public Kind getKind() { return Kind.MEMBER_SELECT; }
2187 @DefinedBy(Api.COMPILER_TREE)
2188 public JCExpression getExpression() { return selected; }
2189 @Override @DefinedBy(Api.COMPILER_TREE)
2190 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2191 return v.visitMemberSelect(this, d);
2192 }
2193 @DefinedBy(Api.COMPILER_TREE)
2194 public Name getIdentifier() { return name; }
2195 @Override
2196 public Tag getTag() {
2197 return SELECT;
2198 }
2199 }
2200
2201 /**
2202 * Selects a member expression.
2203 */
2204 public static class JCMemberReference extends JCFunctionalExpression implements MemberReferenceTree {
2205
2206 public ReferenceMode mode;
2207 public ReferenceKind kind;
2208 public Name name;
2209 public JCExpression expr;
2210 public List<JCExpression> typeargs;
2211 public Symbol sym;
2212 public Type varargsElement;
2213 public PolyKind refPolyKind;
2214 public boolean ownerAccessible;
2215 private OverloadKind overloadKind;
2216 public Type referentType;
2217
2218 public enum OverloadKind {
2219 OVERLOADED,
2220 UNOVERLOADED
2221 }
2222
2223 /**
2224 * Javac-dependent classification for member references, based
2225 * on relevant properties w.r.t. code-generation
2226 */
2227 public enum ReferenceKind {
2228 /** super # instMethod */
2229 SUPER(ReferenceMode.INVOKE, false),
2230 /** Type # instMethod */
2231 UNBOUND(ReferenceMode.INVOKE, true),
2232 /** Type # staticMethod */
2233 STATIC(ReferenceMode.INVOKE, false),
2234 /** Expr # instMethod */
2235 BOUND(ReferenceMode.INVOKE, false),
2236 /** Inner # new */
2237 IMPLICIT_INNER(ReferenceMode.NEW, false),
2238 /** Toplevel # new */
2239 TOPLEVEL(ReferenceMode.NEW, false),
2240 /** ArrayType # new */
2241 ARRAY_CTOR(ReferenceMode.NEW, false);
2242
2243 final ReferenceMode mode;
2244 final boolean unbound;
2245
2246 private ReferenceKind(ReferenceMode mode, boolean unbound) {
2247 this.mode = mode;
2248 this.unbound = unbound;
2249 }
2250
2251 public boolean isUnbound() {
2252 return unbound;
2253 }
2254 }
2255
2256 public JCMemberReference(ReferenceMode mode, Name name, JCExpression expr, List<JCExpression> typeargs) {
2257 this.mode = mode;
2258 this.name = name;
2259 this.expr = expr;
2260 this.typeargs = typeargs;
2261 }
2262 @Override
2263 public void accept(Visitor v) { v.visitReference(this); }
2264
2265 @DefinedBy(Api.COMPILER_TREE)
2266 public Kind getKind() { return Kind.MEMBER_REFERENCE; }
2267 @Override @DefinedBy(Api.COMPILER_TREE)
2268 public ReferenceMode getMode() { return mode; }
2269 @Override @DefinedBy(Api.COMPILER_TREE)
2270 public JCExpression getQualifierExpression() { return expr; }
2271 @Override @DefinedBy(Api.COMPILER_TREE)
2272 public Name getName() { return name; }
2273 @Override @DefinedBy(Api.COMPILER_TREE)
2274 public List<JCExpression> getTypeArguments() { return typeargs; }
2275
2276 @Override @DefinedBy(Api.COMPILER_TREE)
2277 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2278 return v.visitMemberReference(this, d);
2279 }
2280 @Override
2281 public Tag getTag() {
2282 return REFERENCE;
2283 }
2284 public boolean hasKind(ReferenceKind kind) {
2285 return this.kind == kind;
2286 }
2287
2288 /**
2289 * @return the overloadKind
2290 */
2291 public OverloadKind getOverloadKind() {
2292 return overloadKind;
2293 }
2294
2295 /**
2296 * @param overloadKind the overloadKind to set
2297 */
2298 public void setOverloadKind(OverloadKind overloadKind) {
2299 this.overloadKind = overloadKind;
2300 }
2301 }
2302
2303 /**
2304 * An identifier
2305 */
2306 public static class JCIdent extends JCExpression implements IdentifierTree {
2307 /** the name */
2308 public Name name;
2309 /** the symbol */
2310 public Symbol sym;
2311 protected JCIdent(Name name, Symbol sym) {
2312 this.name = name;
2313 this.sym = sym;
2314 }
2315 @Override
2316 public void accept(Visitor v) { v.visitIdent(this); }
2317
2318 @DefinedBy(Api.COMPILER_TREE)
2319 public Kind getKind() { return Kind.IDENTIFIER; }
2320 @DefinedBy(Api.COMPILER_TREE)
2321 public Name getName() { return name; }
2322 @Override @DefinedBy(Api.COMPILER_TREE)
2323 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2324 return v.visitIdentifier(this, d);
2325 }
2326 @Override
2327 public Tag getTag() {
2328 return IDENT;
2329 }
2330 }
2331
2332 /**
2333 * A constant value given literally.
2334 */
2335 public static class JCLiteral extends JCExpression implements LiteralTree {
2336 public TypeTag typetag;
2337 /** value representation */
2338 public Object value;
2339 protected JCLiteral(TypeTag typetag, Object value) {
2340 this.typetag = typetag;
2341 this.value = value;
2342 }
2343 @Override
2344 public void accept(Visitor v) { v.visitLiteral(this); }
2345
2346 @DefinedBy(Api.COMPILER_TREE)
2347 public Kind getKind() {
2348 return typetag.getKindLiteral();
2349 }
2350
2351 @DefinedBy(Api.COMPILER_TREE)
2352 public Object getValue() {
2353 switch (typetag) {
2354 case BOOLEAN:
2355 int bi = (Integer) value;
2356 return (bi != 0);
2357 case CHAR:
2358 int ci = (Integer) value;
2359 char c = (char) ci;
2360 if (c != ci)
2361 throw new AssertionError("bad value for char literal");
2362 return c;
2363 default:
2364 return value;
2365 }
2366 }
2367 @Override @DefinedBy(Api.COMPILER_TREE)
2368 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2369 return v.visitLiteral(this, d);
2370 }
2371 @Override
2372 public JCLiteral setType(Type type) {
2373 super.setType(type);
2374 return this;
2375 }
2376 @Override
2377 public Tag getTag() {
2378 return LITERAL;
2379 }
2380 }
2381
2382 /**
2383 * Identifies a basic type.
2384 * @see TypeTag
2385 */
2386 public static class JCPrimitiveTypeTree extends JCExpression implements PrimitiveTypeTree {
2387 /** the basic type id */
2388 public TypeTag typetag;
2389 protected JCPrimitiveTypeTree(TypeTag typetag) {
2390 this.typetag = typetag;
2391 }
2392 @Override
2393 public void accept(Visitor v) { v.visitTypeIdent(this); }
2394
2395 @DefinedBy(Api.COMPILER_TREE)
2396 public Kind getKind() { return Kind.PRIMITIVE_TYPE; }
2397 @DefinedBy(Api.COMPILER_TREE)
2398 public TypeKind getPrimitiveTypeKind() {
2399 return typetag.getPrimitiveTypeKind();
2400 }
2401
2402 @Override @DefinedBy(Api.COMPILER_TREE)
2403 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2404 return v.visitPrimitiveType(this, d);
2405 }
2406 @Override
2407 public Tag getTag() {
2408 return TYPEIDENT;
2409 }
2410 }
2411
2412 /**
2413 * An array type, A[]
2414 */
2415 public static class JCArrayTypeTree extends JCExpression implements ArrayTypeTree {
2416 public JCExpression elemtype;
2417 protected JCArrayTypeTree(JCExpression elemtype) {
2418 this.elemtype = elemtype;
2419 }
2420 @Override
2421 public void accept(Visitor v) { v.visitTypeArray(this); }
2422
2423 @DefinedBy(Api.COMPILER_TREE)
2424 public Kind getKind() { return Kind.ARRAY_TYPE; }
2425 @DefinedBy(Api.COMPILER_TREE)
2426 public JCTree getType() { return elemtype; }
2427 @Override @DefinedBy(Api.COMPILER_TREE)
2428 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2429 return v.visitArrayType(this, d);
2430 }
2431 @Override
2432 public Tag getTag() {
2433 return TYPEARRAY;
2434 }
2435 }
2436
2437 /**
2438 * A parameterized type, {@literal T<...>}
2439 */
2440 public static class JCTypeApply extends JCExpression implements ParameterizedTypeTree {
2441 public JCExpression clazz;
2442 public List<JCExpression> arguments;
2443 protected JCTypeApply(JCExpression clazz, List<JCExpression> arguments) {
2444 this.clazz = clazz;
2445 this.arguments = arguments;
2446 }
2447 @Override
2448 public void accept(Visitor v) { v.visitTypeApply(this); }
2449
2450 @DefinedBy(Api.COMPILER_TREE)
2451 public Kind getKind() { return Kind.PARAMETERIZED_TYPE; }
2452 @DefinedBy(Api.COMPILER_TREE)
2453 public JCTree getType() { return clazz; }
2454 @DefinedBy(Api.COMPILER_TREE)
2455 public List<JCExpression> getTypeArguments() {
2456 return arguments;
2457 }
2458 @Override @DefinedBy(Api.COMPILER_TREE)
2459 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2460 return v.visitParameterizedType(this, d);
2461 }
2462 @Override
2463 public Tag getTag() {
2464 return TYPEAPPLY;
2465 }
2466 }
2467
2468 /**
2469 * A union type, T1 | T2 | ... Tn (used in multicatch statements)
2470 */
2471 public static class JCTypeUnion extends JCExpression implements UnionTypeTree {
2472
2473 public List<JCExpression> alternatives;
2474
2475 protected JCTypeUnion(List<JCExpression> components) {
2476 this.alternatives = components;
2477 }
2478 @Override
2479 public void accept(Visitor v) { v.visitTypeUnion(this); }
2480
2481 @DefinedBy(Api.COMPILER_TREE)
2482 public Kind getKind() { return Kind.UNION_TYPE; }
2483
2484 @DefinedBy(Api.COMPILER_TREE)
2485 public List<JCExpression> getTypeAlternatives() {
2486 return alternatives;
2487 }
2488 @Override @DefinedBy(Api.COMPILER_TREE)
2489 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2490 return v.visitUnionType(this, d);
2491 }
2492 @Override
2493 public Tag getTag() {
2494 return TYPEUNION;
2495 }
2496 }
2497
2498 /**
2499 * An intersection type, {@code T1 & T2 & ... Tn} (used in cast expressions)
2500 */
2501 public static class JCTypeIntersection extends JCExpression implements IntersectionTypeTree {
2502
2503 public List<JCExpression> bounds;
2504
2505 protected JCTypeIntersection(List<JCExpression> bounds) {
2506 this.bounds = bounds;
2507 }
2508 @Override
2509 public void accept(Visitor v) { v.visitTypeIntersection(this); }
2510
2511 @DefinedBy(Api.COMPILER_TREE)
2512 public Kind getKind() { return Kind.INTERSECTION_TYPE; }
2513
2514 @DefinedBy(Api.COMPILER_TREE)
2515 public List<JCExpression> getBounds() {
2516 return bounds;
2517 }
2518 @Override @DefinedBy(Api.COMPILER_TREE)
2519 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2520 return v.visitIntersectionType(this, d);
2521 }
2522 @Override
2523 public Tag getTag() {
2524 return TYPEINTERSECTION;
2525 }
2526 }
2527
2528 /**
2529 * A formal class parameter.
2530 */
2531 public static class JCTypeParameter extends JCTree implements TypeParameterTree {
2532 /** name */
2533 public Name name;
2534 /** bounds */
2535 public List<JCExpression> bounds;
2536 /** type annotations on type parameter */
2537 public List<JCAnnotation> annotations;
2538 protected JCTypeParameter(Name name, List<JCExpression> bounds, List<JCAnnotation> annotations) {
2539 this.name = name;
2540 this.bounds = bounds;
2541 this.annotations = annotations;
2542 }
2543 @Override
2544 public void accept(Visitor v) { v.visitTypeParameter(this); }
2545
2546 @DefinedBy(Api.COMPILER_TREE)
2547 public Kind getKind() { return Kind.TYPE_PARAMETER; }
2548 @DefinedBy(Api.COMPILER_TREE)
2549 public Name getName() { return name; }
2550 @DefinedBy(Api.COMPILER_TREE)
2551 public List<JCExpression> getBounds() {
2552 return bounds;
2553 }
2554 @DefinedBy(Api.COMPILER_TREE)
2555 public List<JCAnnotation> getAnnotations() {
2556 return annotations;
2557 }
2558 @Override @DefinedBy(Api.COMPILER_TREE)
2559 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2560 return v.visitTypeParameter(this, d);
2561 }
2562 @Override
2563 public Tag getTag() {
2564 return TYPEPARAMETER;
2565 }
2566 }
2567
2568 public static class JCWildcard extends JCExpression implements WildcardTree {
2569 public TypeBoundKind kind;
2570 public JCTree inner;
2571 protected JCWildcard(TypeBoundKind kind, JCTree inner) {
2572 this.kind = Assert.checkNonNull(kind);
2573 this.inner = inner;
2574 }
2575 @Override
2576 public void accept(Visitor v) { v.visitWildcard(this); }
2577
2578 @DefinedBy(Api.COMPILER_TREE)
2579 public Kind getKind() {
2580 switch (kind.kind) {
2581 case UNBOUND:
2582 return Kind.UNBOUNDED_WILDCARD;
2583 case EXTENDS:
2584 return Kind.EXTENDS_WILDCARD;
2585 case SUPER:
2586 return Kind.SUPER_WILDCARD;
2587 default:
2588 throw new AssertionError("Unknown wildcard bound " + kind);
2589 }
2590 }
2591 @DefinedBy(Api.COMPILER_TREE)
2592 public JCTree getBound() { return inner; }
2593 @Override @DefinedBy(Api.COMPILER_TREE)
2594 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2595 return v.visitWildcard(this, d);
2596 }
2597 @Override
2598 public Tag getTag() {
2599 return Tag.WILDCARD;
2600 }
2601 }
2602
2603 public static class TypeBoundKind extends JCTree {
2604 public BoundKind kind;
2605 protected TypeBoundKind(BoundKind kind) {
2606 this.kind = kind;
2607 }
2608 @Override
2609 public void accept(Visitor v) { v.visitTypeBoundKind(this); }
2610
2611 @DefinedBy(Api.COMPILER_TREE)
2612 public Kind getKind() {
2613 throw new AssertionError("TypeBoundKind is not part of a public API");
2614 }
2615 @Override @DefinedBy(Api.COMPILER_TREE)
2616 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2617 throw new AssertionError("TypeBoundKind is not part of a public API");
2618 }
2619 @Override
2620 public Tag getTag() {
2621 return TYPEBOUNDKIND;
2622 }
2623 }
2624
2625 public static class JCAnnotation extends JCExpression implements AnnotationTree {
2626 // Either Tag.ANNOTATION or Tag.TYPE_ANNOTATION
2627 private Tag tag;
2628
2629 public JCTree annotationType;
2630 public List<JCExpression> args;
2631 public Attribute.Compound attribute;
2632
2633 protected JCAnnotation(Tag tag, JCTree annotationType, List<JCExpression> args) {
2634 this.tag = tag;
2635 this.annotationType = annotationType;
2636 this.args = args;
2637 }
2638
2639 @Override
2640 public void accept(Visitor v) { v.visitAnnotation(this); }
2641
2642 @DefinedBy(Api.COMPILER_TREE)
2643 public Kind getKind() { return TreeInfo.tagToKind(getTag()); }
2644
2645 @DefinedBy(Api.COMPILER_TREE)
2646 public JCTree getAnnotationType() { return annotationType; }
2647 @DefinedBy(Api.COMPILER_TREE)
2648 public List<JCExpression> getArguments() {
2649 return args;
2650 }
2651 @Override @DefinedBy(Api.COMPILER_TREE)
2652 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2653 return v.visitAnnotation(this, d);
2654 }
2655 @Override
2656 public Tag getTag() {
2657 return tag;
2658 }
2659 }
2660
2661 public static class JCModifiers extends JCTree implements com.sun.source.tree.ModifiersTree {
2662 public long flags;
2663 public List<JCAnnotation> annotations;
2664 protected JCModifiers(long flags, List<JCAnnotation> annotations) {
2665 this.flags = flags;
2666 this.annotations = annotations;
2667 }
2668 @Override
2669 public void accept(Visitor v) { v.visitModifiers(this); }
2670
2671 @DefinedBy(Api.COMPILER_TREE)
2672 public Kind getKind() { return Kind.MODIFIERS; }
2673 @DefinedBy(Api.COMPILER_TREE)
2674 public Set<Modifier> getFlags() {
2675 return Flags.asModifierSet(flags);
2676 }
2677 @DefinedBy(Api.COMPILER_TREE)
2678 public List<JCAnnotation> getAnnotations() {
2679 return annotations;
2680 }
2681 @Override @DefinedBy(Api.COMPILER_TREE)
2682 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2683 return v.visitModifiers(this, d);
2684 }
2685 @Override
2686 public Tag getTag() {
2687 return MODIFIERS;
2688 }
2689 }
2690
2691 public static class JCAnnotatedType extends JCExpression implements com.sun.source.tree.AnnotatedTypeTree {
2692 // type annotations
2693 public List<JCAnnotation> annotations;
2694 public JCExpression underlyingType;
2695
2696 protected JCAnnotatedType(List<JCAnnotation> annotations, JCExpression underlyingType) {
2697 Assert.check(annotations != null && annotations.nonEmpty());
2698 this.annotations = annotations;
2699 this.underlyingType = underlyingType;
2700 }
2701 @Override
2702 public void accept(Visitor v) { v.visitAnnotatedType(this); }
2703
2704 @DefinedBy(Api.COMPILER_TREE)
2705 public Kind getKind() { return Kind.ANNOTATED_TYPE; }
2706 @DefinedBy(Api.COMPILER_TREE)
2707 public List<JCAnnotation> getAnnotations() {
2708 return annotations;
2709 }
2710 @DefinedBy(Api.COMPILER_TREE)
2711 public JCExpression getUnderlyingType() {
2712 return underlyingType;
2713 }
2714 @Override @DefinedBy(Api.COMPILER_TREE)
2715 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
2716 return v.visitAnnotatedType(this, d);
2717 }
2718 @Override
2719 public Tag getTag() {
2720 return ANNOTATED_TYPE;
2721 }
2722 }
2723
2724 public static abstract class JCDirective extends JCTree
2725 implements DirectiveTree {
2726 }
2727
2728 public static class JCModuleDecl extends JCTree implements ModuleTree {
2729 public JCModifiers mods;
2730 public ModuleType type;
2731 private final ModuleKind kind;
2732 public JCExpression qualId;
2733 public List<JCDirective> directives;
2734 public ModuleSymbol sym;
2735
2736 protected JCModuleDecl(JCModifiers mods, ModuleKind kind,
2737 JCExpression qualId, List<JCDirective> directives) {
2738 this.mods = mods;
2739 this.kind = kind;
2740 this.qualId = qualId;
2741 this.directives = directives;
2742 }
2743
2744 @Override
2745 public void accept(Visitor v) { v.visitModuleDef(this); }
2746
2747 @Override @DefinedBy(Api.COMPILER_TREE)
2748 public Kind getKind() {
2749 return Kind.MODULE;
2750 }
2751
2752 @Override @DefinedBy(Api.COMPILER_TREE)
2753 public List<? extends AnnotationTree> getAnnotations() {
2754 return mods.annotations;
2755 }
2756
2757 @Override @DefinedBy(Api.COMPILER_TREE)
2758 public ModuleKind getModuleType() {
2759 return kind;
2760 }
2761
2762 @Override @DefinedBy(Api.COMPILER_TREE)
2763 public JCExpression getName() {
2764 return qualId;
2765 }
2766
2767 @Override @DefinedBy(Api.COMPILER_TREE)
2768 public List<JCDirective> getDirectives() {
2769 return directives;
2770 }
2771
2772 @Override @DefinedBy(Api.COMPILER_TREE)
2773 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
2774 return v.visitModule(this, d);
2775 }
2776
2777 @Override
2778 public Tag getTag() {
2779 return MODULEDEF;
2780 }
2781 }
2782
2783 public static class JCExports extends JCDirective
2784 implements ExportsTree {
2785 public JCExpression qualid;
2786 public List<JCExpression> moduleNames;
2787 public ExportsDirective directive;
2788
2789 protected JCExports(JCExpression qualId, List<JCExpression> moduleNames) {
2790 this.qualid = qualId;
2791 this.moduleNames = moduleNames;
2792 }
2793
2794 @Override
2795 public void accept(Visitor v) { v.visitExports(this); }
2796
2797 @Override @DefinedBy(Api.COMPILER_TREE)
2798 public Kind getKind() {
2799 return Kind.EXPORTS;
2800 }
2801
2802 @Override @DefinedBy(Api.COMPILER_TREE)
2803 public JCExpression getPackageName() {
2804 return qualid;
2805 }
2806
2807 @Override @DefinedBy(Api.COMPILER_TREE)
2808 public List<JCExpression> getModuleNames() {
2809 return moduleNames;
2810 }
2811
2812 @Override @DefinedBy(Api.COMPILER_TREE)
2813 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
2814 return v.visitExports(this, d);
2815 }
2816
2817 @Override
2818 public Tag getTag() {
2819 return Tag.EXPORTS;
2820 }
2821 }
2822
2823 public static class JCOpens extends JCDirective
2824 implements OpensTree {
2825 public JCExpression qualid;
2826 public List<JCExpression> moduleNames;
2827 public OpensDirective directive;
2828
2829 protected JCOpens(JCExpression qualId, List<JCExpression> moduleNames) {
2830 this.qualid = qualId;
2831 this.moduleNames = moduleNames;
2832 }
2833
2834 @Override
2835 public void accept(Visitor v) { v.visitOpens(this); }
2836
2837 @Override @DefinedBy(Api.COMPILER_TREE)
2838 public Kind getKind() {
2839 return Kind.OPENS;
2840 }
2841
2842 @Override @DefinedBy(Api.COMPILER_TREE)
2843 public JCExpression getPackageName() {
2844 return qualid;
2845 }
2846
2847 @Override @DefinedBy(Api.COMPILER_TREE)
2848 public List<JCExpression> getModuleNames() {
2849 return moduleNames;
2850 }
2851
2852 @Override @DefinedBy(Api.COMPILER_TREE)
2853 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
2854 return v.visitOpens(this, d);
2855 }
2856
2857 @Override
2858 public Tag getTag() {
2859 return Tag.OPENS;
2860 }
2861 }
2862
2863 public static class JCProvides extends JCDirective
2864 implements ProvidesTree {
2865 public JCExpression serviceName;
2866 public List<JCExpression> implNames;
2867
2868 protected JCProvides(JCExpression serviceName, List<JCExpression> implNames) {
2869 this.serviceName = serviceName;
2870 this.implNames = implNames;
2871 }
2872
2873 @Override
2874 public void accept(Visitor v) { v.visitProvides(this); }
2875
2876 @Override @DefinedBy(Api.COMPILER_TREE)
2877 public Kind getKind() {
2878 return Kind.PROVIDES;
2879 }
2880
2881 @Override @DefinedBy(Api.COMPILER_TREE)
2882 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
2883 return v.visitProvides(this, d);
2884 }
2885
2886 @Override @DefinedBy(Api.COMPILER_TREE)
2887 public JCExpression getServiceName() {
2888 return serviceName;
2889 }
2890
2891 @Override @DefinedBy(Api.COMPILER_TREE)
2892 public List<JCExpression> getImplementationNames() {
2893 return implNames;
2894 }
2895
2896 @Override
2897 public Tag getTag() {
2898 return PROVIDES;
2899 }
2900 }
2901
2902 public static class JCRequires extends JCDirective
2903 implements RequiresTree {
2904 public boolean isTransitive;
2905 public boolean isStaticPhase;
2906 public JCExpression moduleName;
2907 public RequiresDirective directive;
2908
2909 protected JCRequires(boolean isTransitive, boolean isStaticPhase, JCExpression moduleName) {
2910 this.isTransitive = isTransitive;
2911 this.isStaticPhase = isStaticPhase;
2912 this.moduleName = moduleName;
2913 }
2914
2915 @Override
2916 public void accept(Visitor v) { v.visitRequires(this); }
2917
2918 @Override @DefinedBy(Api.COMPILER_TREE)
2919 public Kind getKind() {
2920 return Kind.REQUIRES;
2921 }
2922
2923 @Override @DefinedBy(Api.COMPILER_TREE)
2924 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
2925 return v.visitRequires(this, d);
2926 }
2927
2928 @Override @DefinedBy(Api.COMPILER_TREE)
2929 public boolean isTransitive() {
2930 return isTransitive;
2931 }
2932
2933 @Override @DefinedBy(Api.COMPILER_TREE)
2934 public boolean isStatic() {
2935 return isStaticPhase;
2936 }
2937
2938 @Override @DefinedBy(Api.COMPILER_TREE)
2939 public JCExpression getModuleName() {
2940 return moduleName;
2941 }
2942
2943 @Override
2944 public Tag getTag() {
2945 return REQUIRES;
2946 }
2947 }
2948
2949 public static class JCUses extends JCDirective
2950 implements UsesTree {
2951 public JCExpression qualid;
2952
2953 protected JCUses(JCExpression qualId) {
2954 this.qualid = qualId;
2955 }
2956
2957 @Override
2958 public void accept(Visitor v) { v.visitUses(this); }
2959
2960 @Override @DefinedBy(Api.COMPILER_TREE)
2961 public Kind getKind() {
2962 return Kind.USES;
2963 }
2964
2965 @Override @DefinedBy(Api.COMPILER_TREE)
2966 public JCExpression getServiceName() {
2967 return qualid;
2968 }
2969
2970 @Override @DefinedBy(Api.COMPILER_TREE)
2971 public <R, D> R accept(TreeVisitor<R, D> v, D d) {
2972 return v.visitUses(this, d);
2973 }
2974
2975 @Override
2976 public Tag getTag() {
2977 return USES;
2978 }
2979 }
2980
2981 public static class JCErroneous extends JCExpression
2982 implements ErroneousTree {
2983 public List<? extends JCTree> errs;
2984 protected JCErroneous(List<? extends JCTree> errs) {
2985 this.errs = errs;
2986 }
2987 @Override
2988 public void accept(Visitor v) { v.visitErroneous(this); }
2989
2990 @DefinedBy(Api.COMPILER_TREE)
2991 public Kind getKind() { return Kind.ERRONEOUS; }
2992
2993 @DefinedBy(Api.COMPILER_TREE)
2994 public List<? extends JCTree> getErrorTrees() {
2995 return errs;
2996 }
2997
2998 @Override @DefinedBy(Api.COMPILER_TREE)
2999 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
3000 return v.visitErroneous(this, d);
3001 }
3002 @Override
3003 public Tag getTag() {
3004 return ERRONEOUS;
3005 }
3006 }
3007
3008 /** (let int x = 3; in x+2) */
3009 public static class LetExpr extends JCExpression {
3010 public List<JCStatement> defs;
3011 public JCExpression expr;
3012 protected LetExpr(List<JCStatement> defs, JCExpression expr) {
3013 this.defs = defs;
3014 this.expr = expr;
3015 }
3016 @Override
3017 public void accept(Visitor v) { v.visitLetExpr(this); }
3018
3019 @DefinedBy(Api.COMPILER_TREE)
3020 public Kind getKind() {
3021 throw new AssertionError("LetExpr is not part of a public API");
3022 }
3023 @Override @DefinedBy(Api.COMPILER_TREE)
3024 public <R,D> R accept(TreeVisitor<R,D> v, D d) {
3025 throw new AssertionError("LetExpr is not part of a public API");
3026 }
3027 @Override
3028 public Tag getTag() {
3029 return LETEXPR;
3030 }
3031 }
3032
3033 /** An interface for tree factories
3034 */
3035 public interface Factory {
3036 JCCompilationUnit TopLevel(List<JCTree> defs);
3037 JCPackageDecl PackageDecl(List<JCAnnotation> annotations,
3038 JCExpression pid);
3039 JCImport Import(JCTree qualid, boolean staticImport);
3040 JCClassDecl ClassDef(JCModifiers mods,
3041 Name name,
3042 List<JCTypeParameter> typarams,
3043 JCExpression extending,
3044 List<JCExpression> implementing,
3045 List<JCTree> defs);
3046 JCMethodDecl MethodDef(JCModifiers mods,
3047 Name name,
3048 JCExpression restype,
3049 List<JCTypeParameter> typarams,
3050 JCVariableDecl recvparam,
3051 List<JCVariableDecl> params,
3052 List<JCExpression> thrown,
3053 JCBlock body,
3054 JCExpression defaultValue);
3055 JCVariableDecl VarDef(JCModifiers mods,
3056 Name name,
3057 JCExpression vartype,
3058 JCExpression init);
3059 JCSkip Skip();
3060 JCBlock Block(long flags, List<JCStatement> stats);
3061 JCDoWhileLoop DoLoop(JCStatement body, JCExpression cond);
3062 JCWhileLoop WhileLoop(JCExpression cond, JCStatement body);
3063 JCForLoop ForLoop(List<JCStatement> init,
3064 JCExpression cond,
3065 List<JCExpressionStatement> step,
3066 JCStatement body);
3067 JCEnhancedForLoop ForeachLoop(JCVariableDecl var, JCExpression expr, JCStatement body);
3068 JCLabeledStatement Labelled(Name label, JCStatement body);
3069 JCSwitch Switch(JCExpression selector, List<JCCase> cases);
3070 JCSwitchExpression SwitchExpression(JCExpression selector, List<JCCase> cases);
3071 JCCase Case(@SuppressWarnings("removal") CaseKind caseKind, List<JCExpression> pat,
3072 List<JCStatement> stats, JCTree body);
3073 JCSynchronized Synchronized(JCExpression lock, JCBlock body);
3074 JCTry Try(JCBlock body, List<JCCatch> catchers, JCBlock finalizer);
3075 JCTry Try(List<JCTree> resources,
3076 JCBlock body,
3077 List<JCCatch> catchers,
3078 JCBlock finalizer);
3079 JCCatch Catch(JCVariableDecl param, JCBlock body);
3080 JCConditional Conditional(JCExpression cond,
3081 JCExpression thenpart,
3082 JCExpression elsepart);
3083 JCIf If(JCExpression cond, JCStatement thenpart, JCStatement elsepart);
3084 JCExpressionStatement Exec(JCExpression expr);
3085 JCBreak Break(JCExpression value);
3086 JCContinue Continue(Name label);
3087 JCReturn Return(JCExpression expr);
3088 JCThrow Throw(JCExpression expr);
3089 JCAssert Assert(JCExpression cond, JCExpression detail);
3090 JCMethodInvocation Apply(List<JCExpression> typeargs,
3091 JCExpression fn,
3092 List<JCExpression> args);
3093 JCNewClass NewClass(JCExpression encl,
3094 List<JCExpression> typeargs,
3095 JCExpression clazz,
3096 List<JCExpression> args,
3097 JCClassDecl def);
3098 JCNewArray NewArray(JCExpression elemtype,
3099 List<JCExpression> dims,
3100 List<JCExpression> elems);
3101 JCParens Parens(JCExpression expr);
3102 JCAssign Assign(JCExpression lhs, JCExpression rhs);
3103 JCAssignOp Assignop(Tag opcode, JCTree lhs, JCTree rhs);
3104 JCUnary Unary(Tag opcode, JCExpression arg);
3105 JCBinary Binary(Tag opcode, JCExpression lhs, JCExpression rhs);
3106 JCTypeCast TypeCast(JCTree expr, JCExpression type);
3107 JCInstanceOf TypeTest(JCExpression expr, JCTree clazz);
3108 JCArrayAccess Indexed(JCExpression indexed, JCExpression index);
3109 JCFieldAccess Select(JCExpression selected, Name selector);
3110 JCIdent Ident(Name idname);
3111 JCLiteral Literal(TypeTag tag, Object value);
3112 JCPrimitiveTypeTree TypeIdent(TypeTag typetag);
3113 JCArrayTypeTree TypeArray(JCExpression elemtype);
3114 JCTypeApply TypeApply(JCExpression clazz, List<JCExpression> arguments);
3115 JCTypeParameter TypeParameter(Name name, List<JCExpression> bounds);
3116 JCWildcard Wildcard(TypeBoundKind kind, JCTree type);
3117 TypeBoundKind TypeBoundKind(BoundKind kind);
3118 JCAnnotation Annotation(JCTree annotationType, List<JCExpression> args);
3119 JCModifiers Modifiers(long flags, List<JCAnnotation> annotations);
3120 JCErroneous Erroneous(List<? extends JCTree> errs);
3121 JCModuleDecl ModuleDef(JCModifiers mods, ModuleKind kind, JCExpression qualId, List<JCDirective> directives);
3122 JCExports Exports(JCExpression qualId, List<JCExpression> moduleNames);
3123 JCOpens Opens(JCExpression qualId, List<JCExpression> moduleNames);
3124 JCProvides Provides(JCExpression serviceName, List<JCExpression> implNames);
3125 JCRequires Requires(boolean isTransitive, boolean isStaticPhase, JCExpression qualId);
3126 JCUses Uses(JCExpression qualId);
3127 LetExpr LetExpr(List<JCStatement> defs, JCExpression expr);
3128 }
3129
3130 /** A generic visitor class for trees.
3131 */
3132 public static abstract class Visitor {
3133 public void visitTopLevel(JCCompilationUnit that) { visitTree(that); }
3134 public void visitPackageDef(JCPackageDecl that) { visitTree(that); }
3135 public void visitImport(JCImport that) { visitTree(that); }
3136 public void visitClassDef(JCClassDecl that) { visitTree(that); }
3137 public void visitMethodDef(JCMethodDecl that) { visitTree(that); }
3138 public void visitVarDef(JCVariableDecl that) { visitTree(that); }
3139 public void visitSkip(JCSkip that) { visitTree(that); }
3140 public void visitBlock(JCBlock that) { visitTree(that); }
3141 public void visitDoLoop(JCDoWhileLoop that) { visitTree(that); }
3142 public void visitWhileLoop(JCWhileLoop that) { visitTree(that); }
3143 public void visitForLoop(JCForLoop that) { visitTree(that); }
3144 public void visitForeachLoop(JCEnhancedForLoop that) { visitTree(that); }
3145 public void visitLabelled(JCLabeledStatement that) { visitTree(that); }
3146 public void visitSwitch(JCSwitch that) { visitTree(that); }
3147 public void visitCase(JCCase that) { visitTree(that); }
3148 public void visitSwitchExpression(JCSwitchExpression that) { visitTree(that); }
3149 public void visitSynchronized(JCSynchronized that) { visitTree(that); }
3150 public void visitTry(JCTry that) { visitTree(that); }
3151 public void visitCatch(JCCatch that) { visitTree(that); }
3152 public void visitConditional(JCConditional that) { visitTree(that); }
3153 public void visitIf(JCIf that) { visitTree(that); }
3154 public void visitExec(JCExpressionStatement that) { visitTree(that); }
3155 public void visitBreak(JCBreak that) { visitTree(that); }
3156 public void visitContinue(JCContinue that) { visitTree(that); }
3157 public void visitReturn(JCReturn that) { visitTree(that); }
3158 public void visitThrow(JCThrow that) { visitTree(that); }
3159 public void visitAssert(JCAssert that) { visitTree(that); }
3160 public void visitApply(JCMethodInvocation that) { visitTree(that); }
3161 public void visitNewClass(JCNewClass that) { visitTree(that); }
3162 public void visitNewArray(JCNewArray that) { visitTree(that); }
3163 public void visitLambda(JCLambda that) { visitTree(that); }
3164 public void visitParens(JCParens that) { visitTree(that); }
3165 public void visitAssign(JCAssign that) { visitTree(that); }
3166 public void visitAssignop(JCAssignOp that) { visitTree(that); }
3167 public void visitUnary(JCUnary that) { visitTree(that); }
3168 public void visitBinary(JCBinary that) { visitTree(that); }
3169 public void visitTypeCast(JCTypeCast that) { visitTree(that); }
3170 public void visitTypeTest(JCInstanceOf that) { visitTree(that); }
3171 public void visitIndexed(JCArrayAccess that) { visitTree(that); }
3172 public void visitSelect(JCFieldAccess that) { visitTree(that); }
3173 public void visitReference(JCMemberReference that) { visitTree(that); }
3174 public void visitIdent(JCIdent that) { visitTree(that); }
3175 public void visitLiteral(JCLiteral that) { visitTree(that); }
3176 public void visitTypeIdent(JCPrimitiveTypeTree that) { visitTree(that); }
3177 public void visitTypeArray(JCArrayTypeTree that) { visitTree(that); }
3178 public void visitTypeApply(JCTypeApply that) { visitTree(that); }
3179 public void visitTypeUnion(JCTypeUnion that) { visitTree(that); }
3180 public void visitTypeIntersection(JCTypeIntersection that) { visitTree(that); }
3181 public void visitTypeParameter(JCTypeParameter that) { visitTree(that); }
3182 public void visitWildcard(JCWildcard that) { visitTree(that); }
3183 public void visitTypeBoundKind(TypeBoundKind that) { visitTree(that); }
3184 public void visitAnnotation(JCAnnotation that) { visitTree(that); }
3185 public void visitModifiers(JCModifiers that) { visitTree(that); }
3186 public void visitAnnotatedType(JCAnnotatedType that) { visitTree(that); }
3187 public void visitErroneous(JCErroneous that) { visitTree(that); }
3188 public void visitModuleDef(JCModuleDecl that) { visitTree(that); }
3189 public void visitExports(JCExports that) { visitTree(that); }
3190 public void visitOpens(JCOpens that) { visitTree(that); }
3191 public void visitProvides(JCProvides that) { visitTree(that); }
3192 public void visitRequires(JCRequires that) { visitTree(that); }
3193 public void visitUses(JCUses that) { visitTree(that); }
3194 public void visitLetExpr(LetExpr that) { visitTree(that); }
3195
3196 public void visitTree(JCTree that) { Assert.error(); }
3197 }
3198
3199 }