1 //===- Nodes.cpp ----------------------------------------------*- C++ -*-=====//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 #include "clang/Tooling/Syntax/Nodes.h"
9 #include "clang/Basic/TokenKinds.h"
10 
11 using namespace clang;
12 
13 raw_ostream &syntax::operator<<(raw_ostream &OS, NodeKind K) {
14   switch (K) {
15   case NodeKind::Leaf:
16     return OS << "Leaf";
17   case NodeKind::TranslationUnit:
18     return OS << "TranslationUnit";
19   case NodeKind::UnknownExpression:
20     return OS << "UnknownExpression";
21   case NodeKind::ParenExpression:
22     return OS << "ParenExpression";
23   case NodeKind::ThisExpression:
24     return OS << "ThisExpression";
25   case NodeKind::IntegerLiteralExpression:
26     return OS << "IntegerLiteralExpression";
27   case NodeKind::CharacterLiteralExpression:
28     return OS << "CharacterLiteralExpression";
29   case NodeKind::FloatingLiteralExpression:
30     return OS << "FloatingLiteralExpression";
31   case NodeKind::StringLiteralExpression:
32     return OS << "StringLiteralExpression";
33   case NodeKind::BoolLiteralExpression:
34     return OS << "BoolLiteralExpression";
35   case NodeKind::CxxNullPtrExpression:
36     return OS << "CxxNullPtrExpression";
37   case NodeKind::IntegerUserDefinedLiteralExpression:
38     return OS << "IntegerUserDefinedLiteralExpression";
39   case NodeKind::FloatUserDefinedLiteralExpression:
40     return OS << "FloatUserDefinedLiteralExpression";
41   case NodeKind::CharUserDefinedLiteralExpression:
42     return OS << "CharUserDefinedLiteralExpression";
43   case NodeKind::StringUserDefinedLiteralExpression:
44     return OS << "StringUserDefinedLiteralExpression";
45   case NodeKind::PrefixUnaryOperatorExpression:
46     return OS << "PrefixUnaryOperatorExpression";
47   case NodeKind::PostfixUnaryOperatorExpression:
48     return OS << "PostfixUnaryOperatorExpression";
49   case NodeKind::BinaryOperatorExpression:
50     return OS << "BinaryOperatorExpression";
51   case NodeKind::UnqualifiedId:
52     return OS << "UnqualifiedId";
53   case NodeKind::IdExpression:
54     return OS << "IdExpression";
55   case NodeKind::CallExpression:
56     return OS << "CallExpression";
57   case NodeKind::UnknownStatement:
58     return OS << "UnknownStatement";
59   case NodeKind::DeclarationStatement:
60     return OS << "DeclarationStatement";
61   case NodeKind::EmptyStatement:
62     return OS << "EmptyStatement";
63   case NodeKind::SwitchStatement:
64     return OS << "SwitchStatement";
65   case NodeKind::CaseStatement:
66     return OS << "CaseStatement";
67   case NodeKind::DefaultStatement:
68     return OS << "DefaultStatement";
69   case NodeKind::IfStatement:
70     return OS << "IfStatement";
71   case NodeKind::ForStatement:
72     return OS << "ForStatement";
73   case NodeKind::WhileStatement:
74     return OS << "WhileStatement";
75   case NodeKind::ContinueStatement:
76     return OS << "ContinueStatement";
77   case NodeKind::BreakStatement:
78     return OS << "BreakStatement";
79   case NodeKind::ReturnStatement:
80     return OS << "ReturnStatement";
81   case NodeKind::RangeBasedForStatement:
82     return OS << "RangeBasedForStatement";
83   case NodeKind::ExpressionStatement:
84     return OS << "ExpressionStatement";
85   case NodeKind::CompoundStatement:
86     return OS << "CompoundStatement";
87   case NodeKind::UnknownDeclaration:
88     return OS << "UnknownDeclaration";
89   case NodeKind::EmptyDeclaration:
90     return OS << "EmptyDeclaration";
91   case NodeKind::StaticAssertDeclaration:
92     return OS << "StaticAssertDeclaration";
93   case NodeKind::LinkageSpecificationDeclaration:
94     return OS << "LinkageSpecificationDeclaration";
95   case NodeKind::SimpleDeclaration:
96     return OS << "SimpleDeclaration";
97   case NodeKind::TemplateDeclaration:
98     return OS << "TemplateDeclaration";
99   case NodeKind::ExplicitTemplateInstantiation:
100     return OS << "ExplicitTemplateInstantiation";
101   case NodeKind::NamespaceDefinition:
102     return OS << "NamespaceDefinition";
103   case NodeKind::NamespaceAliasDefinition:
104     return OS << "NamespaceAliasDefinition";
105   case NodeKind::UsingNamespaceDirective:
106     return OS << "UsingNamespaceDirective";
107   case NodeKind::UsingDeclaration:
108     return OS << "UsingDeclaration";
109   case NodeKind::TypeAliasDeclaration:
110     return OS << "TypeAliasDeclaration";
111   case NodeKind::SimpleDeclarator:
112     return OS << "SimpleDeclarator";
113   case NodeKind::ParenDeclarator:
114     return OS << "ParenDeclarator";
115   case NodeKind::ArraySubscript:
116     return OS << "ArraySubscript";
117   case NodeKind::TrailingReturnType:
118     return OS << "TrailingReturnType";
119   case NodeKind::ParametersAndQualifiers:
120     return OS << "ParametersAndQualifiers";
121   case NodeKind::MemberPointer:
122     return OS << "MemberPointer";
123   case NodeKind::GlobalNameSpecifier:
124     return OS << "GlobalNameSpecifier";
125   case NodeKind::DecltypeNameSpecifier:
126     return OS << "DecltypeNameSpecifier";
127   case NodeKind::IdentifierNameSpecifier:
128     return OS << "IdentifierNameSpecifier";
129   case NodeKind::SimpleTemplateNameSpecifier:
130     return OS << "SimpleTemplateNameSpecifier";
131   case NodeKind::NestedNameSpecifier:
132     return OS << "NestedNameSpecifier";
133   case NodeKind::MemberExpression:
134     return OS << "MemberExpression";
135   case NodeKind::CallArguments:
136     return OS << "CallArguments";
137   case NodeKind::ParameterDeclarationList:
138     return OS << "ParameterDeclarationList";
139   }
140   llvm_unreachable("unknown node kind");
141 }
142 
143 raw_ostream &syntax::operator<<(raw_ostream &OS, NodeRole R) {
144   switch (R) {
145   case syntax::NodeRole::Detached:
146     return OS << "Detached";
147   case syntax::NodeRole::Unknown:
148     return OS << "Unknown";
149   case syntax::NodeRole::OpenParen:
150     return OS << "OpenParen";
151   case syntax::NodeRole::CloseParen:
152     return OS << "CloseParen";
153   case syntax::NodeRole::IntroducerKeyword:
154     return OS << "IntroducerKeyword";
155   case syntax::NodeRole::LiteralToken:
156     return OS << "LiteralToken";
157   case syntax::NodeRole::ArrowToken:
158     return OS << "ArrowToken";
159   case syntax::NodeRole::ExternKeyword:
160     return OS << "ExternKeyword";
161   case syntax::NodeRole::TemplateKeyword:
162     return OS << "TemplateKeyword";
163   case syntax::NodeRole::BodyStatement:
164     return OS << "BodyStatement";
165   case syntax::NodeRole::List_element:
166     return OS << "List_element";
167   case syntax::NodeRole::List_delimiter:
168     return OS << "List_delimiter";
169   case syntax::NodeRole::CaseStatement_value:
170     return OS << "CaseStatement_value";
171   case syntax::NodeRole::IfStatement_thenStatement:
172     return OS << "IfStatement_thenStatement";
173   case syntax::NodeRole::IfStatement_elseKeyword:
174     return OS << "IfStatement_elseKeyword";
175   case syntax::NodeRole::IfStatement_elseStatement:
176     return OS << "IfStatement_elseStatement";
177   case syntax::NodeRole::OperatorExpression_operatorToken:
178     return OS << "OperatorExpression_operatorToken";
179   case syntax::NodeRole::UnaryOperatorExpression_operand:
180     return OS << "UnaryOperatorExpression_operand";
181   case syntax::NodeRole::BinaryOperatorExpression_leftHandSide:
182     return OS << "BinaryOperatorExpression_leftHandSide";
183   case syntax::NodeRole::BinaryOperatorExpression_rightHandSide:
184     return OS << "BinaryOperatorExpression_rightHandSide";
185   case syntax::NodeRole::ReturnStatement_value:
186     return OS << "ReturnStatement_value";
187   case syntax::NodeRole::ExpressionStatement_expression:
188     return OS << "ExpressionStatement_expression";
189   case syntax::NodeRole::CompoundStatement_statement:
190     return OS << "CompoundStatement_statement";
191   case syntax::NodeRole::StaticAssertDeclaration_condition:
192     return OS << "StaticAssertDeclaration_condition";
193   case syntax::NodeRole::StaticAssertDeclaration_message:
194     return OS << "StaticAssertDeclaration_message";
195   case syntax::NodeRole::SimpleDeclaration_declarator:
196     return OS << "SimpleDeclaration_declarator";
197   case syntax::NodeRole::TemplateDeclaration_declaration:
198     return OS << "TemplateDeclaration_declaration";
199   case syntax::NodeRole::ExplicitTemplateInstantiation_declaration:
200     return OS << "ExplicitTemplateInstantiation_declaration";
201   case syntax::NodeRole::ArraySubscript_sizeExpression:
202     return OS << "ArraySubscript_sizeExpression";
203   case syntax::NodeRole::TrailingReturnType_declarator:
204     return OS << "TrailingReturnType_declarator";
205   case syntax::NodeRole::ParametersAndQualifiers_parameters:
206     return OS << "ParametersAndQualifiers_parameters";
207   case syntax::NodeRole::ParametersAndQualifiers_trailingReturn:
208     return OS << "ParametersAndQualifiers_trailingReturn";
209   case syntax::NodeRole::IdExpression_id:
210     return OS << "IdExpression_id";
211   case syntax::NodeRole::IdExpression_qualifier:
212     return OS << "IdExpression_qualifier";
213   case syntax::NodeRole::ParenExpression_subExpression:
214     return OS << "ParenExpression_subExpression";
215   case syntax::NodeRole::MemberExpression_object:
216     return OS << "MemberExpression_object";
217   case syntax::NodeRole::MemberExpression_accessToken:
218     return OS << "MemberExpression_accessToken";
219   case syntax::NodeRole::MemberExpression_member:
220     return OS << "MemberExpression_member";
221   case syntax::NodeRole::CallExpression_callee:
222     return OS << "CallExpression_callee";
223   case syntax::NodeRole::CallExpression_arguments:
224     return OS << "CallExpression_arguments";
225   }
226   llvm_unreachable("invalid role");
227 }
228 
229 // We could have an interator in list to not pay memory costs of temporary
230 // vector
231 std::vector<syntax::NameSpecifier *> syntax::NestedNameSpecifier::specifiers() {
232   auto specifiersAsNodes = getElementsAsNodes();
233   std::vector<syntax::NameSpecifier *> Children;
234   for (const auto &element : specifiersAsNodes) {
235     Children.push_back(llvm::cast<syntax::NameSpecifier>(element));
236   }
237   return Children;
238 }
239 
240 std::vector<syntax::List::ElementAndDelimiter<syntax::NameSpecifier>>
241 syntax::NestedNameSpecifier::specifiersAndDoubleColons() {
242   auto specifiersAsNodesAndDoubleColons = getElementsAsNodesAndDelimiters();
243   std::vector<syntax::List::ElementAndDelimiter<syntax::NameSpecifier>>
244       Children;
245   for (const auto &specifierAndDoubleColon : specifiersAsNodesAndDoubleColons) {
246     Children.push_back(
247         {llvm::cast<syntax::NameSpecifier>(specifierAndDoubleColon.element),
248          specifierAndDoubleColon.delimiter});
249   }
250   return Children;
251 }
252 
253 std::vector<syntax::Expression *> syntax::CallArguments::arguments() {
254   auto ArgumentsAsNodes = getElementsAsNodes();
255   std::vector<syntax::Expression *> Children;
256   for (const auto &ArgumentAsNode : ArgumentsAsNodes) {
257     Children.push_back(llvm::cast<syntax::Expression>(ArgumentAsNode));
258   }
259   return Children;
260 }
261 
262 std::vector<syntax::List::ElementAndDelimiter<syntax::Expression>>
263 syntax::CallArguments::argumentsAndCommas() {
264   auto ArgumentsAsNodesAndCommas = getElementsAsNodesAndDelimiters();
265   std::vector<syntax::List::ElementAndDelimiter<syntax::Expression>> Children;
266   for (const auto &ArgumentAsNodeAndComma : ArgumentsAsNodesAndCommas) {
267     Children.push_back(
268         {llvm::cast<syntax::Expression>(ArgumentAsNodeAndComma.element),
269          ArgumentAsNodeAndComma.delimiter});
270   }
271   return Children;
272 }
273 
274 std::vector<syntax::SimpleDeclaration *>
275 syntax::ParameterDeclarationList::parameterDeclarations() {
276   auto ParametersAsNodes = getElementsAsNodes();
277   std::vector<syntax::SimpleDeclaration *> Children;
278   for (const auto &ParameterAsNode : ParametersAsNodes) {
279     Children.push_back(llvm::cast<syntax::SimpleDeclaration>(ParameterAsNode));
280   }
281   return Children;
282 }
283 
284 std::vector<syntax::List::ElementAndDelimiter<syntax::SimpleDeclaration>>
285 syntax::ParameterDeclarationList::parametersAndCommas() {
286   auto ParametersAsNodesAndCommas = getElementsAsNodesAndDelimiters();
287   std::vector<syntax::List::ElementAndDelimiter<syntax::SimpleDeclaration>>
288       Children;
289   for (const auto &ParameterAsNodeAndComma : ParametersAsNodesAndCommas) {
290     Children.push_back(
291         {llvm::cast<syntax::SimpleDeclaration>(ParameterAsNodeAndComma.element),
292          ParameterAsNodeAndComma.delimiter});
293   }
294   return Children;
295 }
296 
297 syntax::Expression *syntax::MemberExpression::object() {
298   return cast_or_null<syntax::Expression>(
299       findChild(syntax::NodeRole::MemberExpression_object));
300 }
301 
302 syntax::Leaf *syntax::MemberExpression::templateKeyword() {
303   return llvm::cast_or_null<syntax::Leaf>(
304       findChild(syntax::NodeRole::TemplateKeyword));
305 }
306 
307 syntax::Leaf *syntax::MemberExpression::accessToken() {
308   return llvm::cast_or_null<syntax::Leaf>(
309       findChild(syntax::NodeRole::MemberExpression_accessToken));
310 }
311 
312 syntax::IdExpression *syntax::MemberExpression::member() {
313   return cast_or_null<syntax::IdExpression>(
314       findChild(syntax::NodeRole::MemberExpression_member));
315 }
316 
317 syntax::NestedNameSpecifier *syntax::IdExpression::qualifier() {
318   return cast_or_null<syntax::NestedNameSpecifier>(
319       findChild(syntax::NodeRole::IdExpression_qualifier));
320 }
321 
322 syntax::Leaf *syntax::IdExpression::templateKeyword() {
323   return llvm::cast_or_null<syntax::Leaf>(
324       findChild(syntax::NodeRole::TemplateKeyword));
325 }
326 
327 syntax::UnqualifiedId *syntax::IdExpression::unqualifiedId() {
328   return cast_or_null<syntax::UnqualifiedId>(
329       findChild(syntax::NodeRole::IdExpression_id));
330 }
331 
332 syntax::Leaf *syntax::ParenExpression::openParen() {
333   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::OpenParen));
334 }
335 
336 syntax::Expression *syntax::ParenExpression::subExpression() {
337   return cast_or_null<syntax::Expression>(
338       findChild(syntax::NodeRole::ParenExpression_subExpression));
339 }
340 
341 syntax::Leaf *syntax::ParenExpression::closeParen() {
342   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::CloseParen));
343 }
344 
345 syntax::Leaf *syntax::ThisExpression::thisKeyword() {
346   return cast_or_null<syntax::Leaf>(
347       findChild(syntax::NodeRole::IntroducerKeyword));
348 }
349 
350 syntax::Leaf *syntax::LiteralExpression::literalToken() {
351   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::LiteralToken));
352 }
353 
354 syntax::Expression *syntax::BinaryOperatorExpression::lhs() {
355   return cast_or_null<syntax::Expression>(
356       findChild(syntax::NodeRole::BinaryOperatorExpression_leftHandSide));
357 }
358 
359 syntax::Leaf *syntax::UnaryOperatorExpression::operatorToken() {
360   return cast_or_null<syntax::Leaf>(
361       findChild(syntax::NodeRole::OperatorExpression_operatorToken));
362 }
363 
364 syntax::Expression *syntax::UnaryOperatorExpression::operand() {
365   return cast_or_null<syntax::Expression>(
366       findChild(syntax::NodeRole::UnaryOperatorExpression_operand));
367 }
368 
369 syntax::Leaf *syntax::BinaryOperatorExpression::operatorToken() {
370   return cast_or_null<syntax::Leaf>(
371       findChild(syntax::NodeRole::OperatorExpression_operatorToken));
372 }
373 
374 syntax::Expression *syntax::BinaryOperatorExpression::rhs() {
375   return cast_or_null<syntax::Expression>(
376       findChild(syntax::NodeRole::BinaryOperatorExpression_rightHandSide));
377 }
378 
379 syntax::Expression *syntax::CallExpression::callee() {
380   return cast_or_null<syntax::Expression>(
381       findChild(syntax::NodeRole::CallExpression_callee));
382 }
383 
384 syntax::Leaf *syntax::CallExpression::openParen() {
385   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::OpenParen));
386 }
387 
388 syntax::CallArguments *syntax::CallExpression::arguments() {
389   return cast_or_null<syntax::CallArguments>(
390       findChild(syntax::NodeRole::CallExpression_arguments));
391 }
392 
393 syntax::Leaf *syntax::CallExpression::closeParen() {
394   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::CloseParen));
395 }
396 
397 syntax::Leaf *syntax::SwitchStatement::switchKeyword() {
398   return cast_or_null<syntax::Leaf>(
399       findChild(syntax::NodeRole::IntroducerKeyword));
400 }
401 
402 syntax::Statement *syntax::SwitchStatement::body() {
403   return cast_or_null<syntax::Statement>(
404       findChild(syntax::NodeRole::BodyStatement));
405 }
406 
407 syntax::Leaf *syntax::CaseStatement::caseKeyword() {
408   return cast_or_null<syntax::Leaf>(
409       findChild(syntax::NodeRole::IntroducerKeyword));
410 }
411 
412 syntax::Expression *syntax::CaseStatement::value() {
413   return cast_or_null<syntax::Expression>(
414       findChild(syntax::NodeRole::CaseStatement_value));
415 }
416 
417 syntax::Statement *syntax::CaseStatement::body() {
418   return cast_or_null<syntax::Statement>(
419       findChild(syntax::NodeRole::BodyStatement));
420 }
421 
422 syntax::Leaf *syntax::DefaultStatement::defaultKeyword() {
423   return cast_or_null<syntax::Leaf>(
424       findChild(syntax::NodeRole::IntroducerKeyword));
425 }
426 
427 syntax::Statement *syntax::DefaultStatement::body() {
428   return cast_or_null<syntax::Statement>(
429       findChild(syntax::NodeRole::BodyStatement));
430 }
431 
432 syntax::Leaf *syntax::IfStatement::ifKeyword() {
433   return cast_or_null<syntax::Leaf>(
434       findChild(syntax::NodeRole::IntroducerKeyword));
435 }
436 
437 syntax::Statement *syntax::IfStatement::thenStatement() {
438   return cast_or_null<syntax::Statement>(
439       findChild(syntax::NodeRole::IfStatement_thenStatement));
440 }
441 
442 syntax::Leaf *syntax::IfStatement::elseKeyword() {
443   return cast_or_null<syntax::Leaf>(
444       findChild(syntax::NodeRole::IfStatement_elseKeyword));
445 }
446 
447 syntax::Statement *syntax::IfStatement::elseStatement() {
448   return cast_or_null<syntax::Statement>(
449       findChild(syntax::NodeRole::IfStatement_elseStatement));
450 }
451 
452 syntax::Leaf *syntax::ForStatement::forKeyword() {
453   return cast_or_null<syntax::Leaf>(
454       findChild(syntax::NodeRole::IntroducerKeyword));
455 }
456 
457 syntax::Statement *syntax::ForStatement::body() {
458   return cast_or_null<syntax::Statement>(
459       findChild(syntax::NodeRole::BodyStatement));
460 }
461 
462 syntax::Leaf *syntax::WhileStatement::whileKeyword() {
463   return cast_or_null<syntax::Leaf>(
464       findChild(syntax::NodeRole::IntroducerKeyword));
465 }
466 
467 syntax::Statement *syntax::WhileStatement::body() {
468   return cast_or_null<syntax::Statement>(
469       findChild(syntax::NodeRole::BodyStatement));
470 }
471 
472 syntax::Leaf *syntax::ContinueStatement::continueKeyword() {
473   return cast_or_null<syntax::Leaf>(
474       findChild(syntax::NodeRole::IntroducerKeyword));
475 }
476 
477 syntax::Leaf *syntax::BreakStatement::breakKeyword() {
478   return cast_or_null<syntax::Leaf>(
479       findChild(syntax::NodeRole::IntroducerKeyword));
480 }
481 
482 syntax::Leaf *syntax::ReturnStatement::returnKeyword() {
483   return cast_or_null<syntax::Leaf>(
484       findChild(syntax::NodeRole::IntroducerKeyword));
485 }
486 
487 syntax::Expression *syntax::ReturnStatement::value() {
488   return cast_or_null<syntax::Expression>(
489       findChild(syntax::NodeRole::ReturnStatement_value));
490 }
491 
492 syntax::Leaf *syntax::RangeBasedForStatement::forKeyword() {
493   return cast_or_null<syntax::Leaf>(
494       findChild(syntax::NodeRole::IntroducerKeyword));
495 }
496 
497 syntax::Statement *syntax::RangeBasedForStatement::body() {
498   return cast_or_null<syntax::Statement>(
499       findChild(syntax::NodeRole::BodyStatement));
500 }
501 
502 syntax::Expression *syntax::ExpressionStatement::expression() {
503   return cast_or_null<syntax::Expression>(
504       findChild(syntax::NodeRole::ExpressionStatement_expression));
505 }
506 
507 syntax::Leaf *syntax::CompoundStatement::lbrace() {
508   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::OpenParen));
509 }
510 
511 std::vector<syntax::Statement *> syntax::CompoundStatement::statements() {
512   std::vector<syntax::Statement *> Children;
513   for (auto *C = firstChild(); C; C = C->nextSibling()) {
514     assert(C->role() == syntax::NodeRole::CompoundStatement_statement);
515     Children.push_back(cast<syntax::Statement>(C));
516   }
517   return Children;
518 }
519 
520 syntax::Leaf *syntax::CompoundStatement::rbrace() {
521   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::CloseParen));
522 }
523 
524 syntax::Expression *syntax::StaticAssertDeclaration::condition() {
525   return cast_or_null<syntax::Expression>(
526       findChild(syntax::NodeRole::StaticAssertDeclaration_condition));
527 }
528 
529 syntax::Expression *syntax::StaticAssertDeclaration::message() {
530   return cast_or_null<syntax::Expression>(
531       findChild(syntax::NodeRole::StaticAssertDeclaration_message));
532 }
533 
534 std::vector<syntax::SimpleDeclarator *>
535 syntax::SimpleDeclaration::declarators() {
536   std::vector<syntax::SimpleDeclarator *> Children;
537   for (auto *C = firstChild(); C; C = C->nextSibling()) {
538     if (C->role() == syntax::NodeRole::SimpleDeclaration_declarator)
539       Children.push_back(cast<syntax::SimpleDeclarator>(C));
540   }
541   return Children;
542 }
543 
544 syntax::Leaf *syntax::TemplateDeclaration::templateKeyword() {
545   return cast_or_null<syntax::Leaf>(
546       findChild(syntax::NodeRole::IntroducerKeyword));
547 }
548 
549 syntax::Declaration *syntax::TemplateDeclaration::declaration() {
550   return cast_or_null<syntax::Declaration>(
551       findChild(syntax::NodeRole::TemplateDeclaration_declaration));
552 }
553 
554 syntax::Leaf *syntax::ExplicitTemplateInstantiation::templateKeyword() {
555   return cast_or_null<syntax::Leaf>(
556       findChild(syntax::NodeRole::IntroducerKeyword));
557 }
558 
559 syntax::Leaf *syntax::ExplicitTemplateInstantiation::externKeyword() {
560   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::ExternKeyword));
561 }
562 
563 syntax::Declaration *syntax::ExplicitTemplateInstantiation::declaration() {
564   return cast_or_null<syntax::Declaration>(
565       findChild(syntax::NodeRole::ExplicitTemplateInstantiation_declaration));
566 }
567 
568 syntax::Leaf *syntax::ParenDeclarator::lparen() {
569   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::OpenParen));
570 }
571 
572 syntax::Leaf *syntax::ParenDeclarator::rparen() {
573   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::CloseParen));
574 }
575 
576 syntax::Leaf *syntax::ArraySubscript::lbracket() {
577   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::OpenParen));
578 }
579 
580 syntax::Expression *syntax::ArraySubscript::sizeExpression() {
581   return cast_or_null<syntax::Expression>(
582       findChild(syntax::NodeRole::ArraySubscript_sizeExpression));
583 }
584 
585 syntax::Leaf *syntax::ArraySubscript::rbracket() {
586   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::CloseParen));
587 }
588 
589 syntax::Leaf *syntax::TrailingReturnType::arrowToken() {
590   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::ArrowToken));
591 }
592 
593 syntax::SimpleDeclarator *syntax::TrailingReturnType::declarator() {
594   return cast_or_null<syntax::SimpleDeclarator>(
595       findChild(syntax::NodeRole::TrailingReturnType_declarator));
596 }
597 
598 syntax::Leaf *syntax::ParametersAndQualifiers::lparen() {
599   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::OpenParen));
600 }
601 
602 syntax::ParameterDeclarationList *
603 syntax::ParametersAndQualifiers::parameters() {
604   return cast_or_null<syntax::ParameterDeclarationList>(
605       findChild(syntax::NodeRole::ParametersAndQualifiers_parameters));
606 }
607 
608 syntax::Leaf *syntax::ParametersAndQualifiers::rparen() {
609   return cast_or_null<syntax::Leaf>(findChild(syntax::NodeRole::CloseParen));
610 }
611 
612 syntax::TrailingReturnType *syntax::ParametersAndQualifiers::trailingReturn() {
613   return cast_or_null<syntax::TrailingReturnType>(
614       findChild(syntax::NodeRole::ParametersAndQualifiers_trailingReturn));
615 }
616