1 | //===-- lib/Semantics/check-directive-structure.h ---------------*- 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 | |
9 | // Directive structure validity checks common to OpenMP, OpenACC and other |
10 | // directive language. |
11 | |
12 | #ifndef FORTRAN_SEMANTICS_CHECK_DIRECTIVE_STRUCTURE_H_ |
13 | #define FORTRAN_SEMANTICS_CHECK_DIRECTIVE_STRUCTURE_H_ |
14 | |
15 | #include "flang/Common/enum-set.h" |
16 | #include "flang/Semantics/semantics.h" |
17 | #include "flang/Semantics/tools.h" |
18 | #include "llvm/ADT/iterator_range.h" |
19 | |
20 | #include <unordered_map> |
21 | |
22 | namespace Fortran::semantics { |
23 | |
24 | template <typename C, std::size_t ClauseEnumSize> struct DirectiveClauses { |
25 | const common::EnumSet<C, ClauseEnumSize> allowed; |
26 | const common::EnumSet<C, ClauseEnumSize> allowedOnce; |
27 | const common::EnumSet<C, ClauseEnumSize> allowedExclusive; |
28 | const common::EnumSet<C, ClauseEnumSize> requiredOneOf; |
29 | }; |
30 | |
31 | // Generic branching checker for invalid branching out of OpenMP/OpenACC |
32 | // directive. |
33 | // typename D is the directive enumeration. |
34 | template <typename D> class NoBranchingEnforce { |
35 | public: |
36 | NoBranchingEnforce(SemanticsContext &context, |
37 | parser::CharBlock sourcePosition, D directive, |
38 | std::string &&upperCaseDirName) |
39 | : context_{context}, sourcePosition_{sourcePosition}, |
40 | upperCaseDirName_{std::move(upperCaseDirName)}, |
41 | currentDirective_{directive}, numDoConstruct_{0} {} |
42 | template <typename T> bool Pre(const T &) { return true; } |
43 | template <typename T> void Post(const T &) {} |
44 | |
45 | template <typename T> bool Pre(const parser::Statement<T> &statement) { |
46 | currentStatementSourcePosition_ = statement.source; |
47 | return true; |
48 | } |
49 | |
50 | bool Pre(const parser::DoConstruct &) { |
51 | numDoConstruct_++; |
52 | return true; |
53 | } |
54 | void Post(const parser::DoConstruct &) { numDoConstruct_--; } |
55 | void Post(const parser::ReturnStmt &) { EmitBranchOutError(stmt: "RETURN"); } |
56 | void Post(const parser::ExitStmt &exitStmt) { |
57 | if (const auto &exitName{exitStmt.v}) { |
58 | CheckConstructNameBranching(stmt: "EXIT", exitName.value()); |
59 | } else { |
60 | CheckConstructNameBranching(stmt: "EXIT"); |
61 | } |
62 | } |
63 | void Post(const parser::CycleStmt &cycleStmt) { |
64 | if (const auto &cycleName{cycleStmt.v}) { |
65 | CheckConstructNameBranching(stmt: "CYCLE", cycleName.value()); |
66 | } else { |
67 | if constexpr (std::is_same_v<D, llvm::omp::Directive>) { |
68 | switch ((llvm::omp::Directive)currentDirective_) { |
69 | // exclude directives which do not need a check for unlabelled CYCLES |
70 | case llvm::omp::Directive::OMPD_do: |
71 | case llvm::omp::Directive::OMPD_simd: |
72 | case llvm::omp::Directive::OMPD_parallel_do: |
73 | case llvm::omp::Directive::OMPD_parallel_do_simd: |
74 | case llvm::omp::Directive::OMPD_distribute_parallel_do: |
75 | case llvm::omp::Directive::OMPD_distribute_parallel_do_simd: |
76 | case llvm::omp::Directive::OMPD_distribute_parallel_for: |
77 | case llvm::omp::Directive::OMPD_distribute_simd: |
78 | case llvm::omp::Directive::OMPD_distribute_parallel_for_simd: |
79 | case llvm::omp::Directive::OMPD_target_teams_distribute_parallel_do: |
80 | case llvm::omp::Directive:: |
81 | OMPD_target_teams_distribute_parallel_do_simd: |
82 | return; |
83 | default: |
84 | break; |
85 | } |
86 | } else if constexpr (std::is_same_v<D, llvm::acc::Directive>) { |
87 | switch ((llvm::acc::Directive)currentDirective_) { |
88 | // exclude loop directives which do not need a check for unlabelled |
89 | // CYCLES |
90 | case llvm::acc::Directive::ACCD_loop: |
91 | case llvm::acc::Directive::ACCD_kernels_loop: |
92 | case llvm::acc::Directive::ACCD_parallel_loop: |
93 | case llvm::acc::Directive::ACCD_serial_loop: |
94 | return; |
95 | default: |
96 | break; |
97 | } |
98 | } |
99 | CheckConstructNameBranching(stmt: "CYCLE"); |
100 | } |
101 | } |
102 | |
103 | private: |
104 | parser::MessageFormattedText GetEnclosingMsg() const { |
105 | return {"Enclosing %s construct"_en_US, upperCaseDirName_}; |
106 | } |
107 | |
108 | void EmitBranchOutError(const char *stmt) const { |
109 | context_ |
110 | .Say(currentStatementSourcePosition_, |
111 | "%s statement is not allowed in a %s construct"_err_en_US, stmt, |
112 | upperCaseDirName_) |
113 | .Attach(sourcePosition_, GetEnclosingMsg()); |
114 | } |
115 | |
116 | inline void EmitUnlabelledBranchOutError(const char *stmt) { |
117 | context_ |
118 | .Say(currentStatementSourcePosition_, |
119 | "%s to construct outside of %s construct is not allowed"_err_en_US, |
120 | stmt, upperCaseDirName_) |
121 | .Attach(sourcePosition_, GetEnclosingMsg()); |
122 | } |
123 | |
124 | void EmitBranchOutErrorWithName( |
125 | const char *stmt, const parser::Name &toName) const { |
126 | const std::string branchingToName{toName.ToString()}; |
127 | context_ |
128 | .Say(currentStatementSourcePosition_, |
129 | "%s to construct '%s' outside of %s construct is not allowed"_err_en_US, |
130 | stmt, branchingToName, upperCaseDirName_) |
131 | .Attach(sourcePosition_, GetEnclosingMsg()); |
132 | } |
133 | |
134 | // Current semantic checker is not following OpenACC/OpenMP constructs as they |
135 | // are not Fortran constructs. Hence the ConstructStack doesn't capture |
136 | // OpenACC/OpenMP constructs. Apply an inverse way to figure out if a |
137 | // construct-name is branching out of an OpenACC/OpenMP construct. The control |
138 | // flow goes out of an OpenACC/OpenMP construct, if a construct-name from |
139 | // statement is found in ConstructStack. |
140 | void CheckConstructNameBranching( |
141 | const char *stmt, const parser::Name &stmtName) { |
142 | const ConstructStack &stack{context_.constructStack()}; |
143 | for (auto iter{stack.cend()}; iter-- != stack.cbegin();) { |
144 | const ConstructNode &construct{*iter}; |
145 | const auto &constructName{MaybeGetNodeName(construct)}; |
146 | if (constructName) { |
147 | if (stmtName.source == constructName->source) { |
148 | EmitBranchOutErrorWithName(stmt, stmtName); |
149 | return; |
150 | } |
151 | } |
152 | } |
153 | } |
154 | |
155 | // Check branching for unlabelled CYCLES and EXITs |
156 | void CheckConstructNameBranching(const char *stmt) { |
157 | // found an enclosing looping construct for the unlabelled EXIT/CYCLE |
158 | if (numDoConstruct_ > 0) { |
159 | return; |
160 | } |
161 | // did not found an enclosing looping construct within the OpenMP/OpenACC |
162 | // directive |
163 | EmitUnlabelledBranchOutError(stmt); |
164 | } |
165 | |
166 | SemanticsContext &context_; |
167 | parser::CharBlock currentStatementSourcePosition_; |
168 | parser::CharBlock sourcePosition_; |
169 | std::string upperCaseDirName_; |
170 | D currentDirective_; |
171 | int numDoConstruct_; // tracks number of DoConstruct found AFTER encountering |
172 | // an OpenMP/OpenACC directive |
173 | }; |
174 | |
175 | // Generic structure checker for directives/clauses language such as OpenMP |
176 | // and OpenACC. |
177 | // typename D is the directive enumeration. |
178 | // typename C is the clause enumeration. |
179 | // typename PC is the parser class defined in parse-tree.h for the clauses. |
180 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
181 | class DirectiveStructureChecker : public virtual BaseChecker { |
182 | protected: |
183 | DirectiveStructureChecker(SemanticsContext &context, |
184 | const std::unordered_map<D, DirectiveClauses<C, ClauseEnumSize>> |
185 | &directiveClausesMap) |
186 | : context_{context}, directiveClausesMap_(directiveClausesMap) {} |
187 | virtual ~DirectiveStructureChecker() {} |
188 | |
189 | using ClauseMapTy = std::multimap<C, const PC *>; |
190 | struct DirectiveContext { |
191 | DirectiveContext(parser::CharBlock source, D d) |
192 | : directiveSource{source}, directive{d} {} |
193 | |
194 | parser::CharBlock directiveSource{nullptr}; |
195 | parser::CharBlock clauseSource{nullptr}; |
196 | D directive; |
197 | common::EnumSet<C, ClauseEnumSize> allowedClauses{}; |
198 | common::EnumSet<C, ClauseEnumSize> allowedOnceClauses{}; |
199 | common::EnumSet<C, ClauseEnumSize> allowedExclusiveClauses{}; |
200 | common::EnumSet<C, ClauseEnumSize> requiredClauses{}; |
201 | |
202 | const PC *clause{nullptr}; |
203 | ClauseMapTy clauseInfo; |
204 | std::list<C> actualClauses; |
205 | std::list<C> endDirectiveClauses; |
206 | std::list<C> crtGroup; |
207 | Symbol *loopIV{nullptr}; |
208 | }; |
209 | |
210 | void SetLoopIv(Symbol *symbol) { GetContext().loopIV = symbol; } |
211 | |
212 | // back() is the top of the stack |
213 | DirectiveContext &GetContext() { |
214 | CHECK(!dirContext_.empty()); |
215 | return dirContext_.back(); |
216 | } |
217 | |
218 | DirectiveContext &GetContextParent() { |
219 | CHECK(dirContext_.size() >= 2); |
220 | return dirContext_[dirContext_.size() - 2]; |
221 | } |
222 | |
223 | void SetContextClause(const PC &clause) { |
224 | GetContext().clauseSource = clause.source; |
225 | GetContext().clause = &clause; |
226 | } |
227 | |
228 | void ResetPartialContext(const parser::CharBlock &source) { |
229 | CHECK(!dirContext_.empty()); |
230 | SetContextDirectiveSource(source); |
231 | GetContext().allowedClauses = {}; |
232 | GetContext().allowedOnceClauses = {}; |
233 | GetContext().allowedExclusiveClauses = {}; |
234 | GetContext().requiredClauses = {}; |
235 | GetContext().clauseInfo = {}; |
236 | GetContext().loopIV = {nullptr}; |
237 | } |
238 | |
239 | void SetContextDirectiveSource(const parser::CharBlock &directive) { |
240 | GetContext().directiveSource = directive; |
241 | } |
242 | |
243 | void SetContextDirectiveEnum(D dir) { GetContext().directive = dir; } |
244 | |
245 | void SetContextAllowed(const common::EnumSet<C, ClauseEnumSize> &allowed) { |
246 | GetContext().allowedClauses = allowed; |
247 | } |
248 | |
249 | void SetContextAllowedOnce( |
250 | const common::EnumSet<C, ClauseEnumSize> &allowedOnce) { |
251 | GetContext().allowedOnceClauses = allowedOnce; |
252 | } |
253 | |
254 | void SetContextAllowedExclusive( |
255 | const common::EnumSet<C, ClauseEnumSize> &allowedExclusive) { |
256 | GetContext().allowedExclusiveClauses = allowedExclusive; |
257 | } |
258 | |
259 | void SetContextRequired(const common::EnumSet<C, ClauseEnumSize> &required) { |
260 | GetContext().requiredClauses = required; |
261 | } |
262 | |
263 | void SetContextClauseInfo(C type) { |
264 | GetContext().clauseInfo.emplace(type, GetContext().clause); |
265 | } |
266 | |
267 | void AddClauseToCrtContext(C type) { |
268 | GetContext().actualClauses.push_back(type); |
269 | } |
270 | |
271 | void AddClauseToCrtGroupInContext(C type) { |
272 | GetContext().crtGroup.push_back(type); |
273 | } |
274 | |
275 | void ResetCrtGroup() { GetContext().crtGroup.clear(); } |
276 | |
277 | // Check if the given clause is present in the current context |
278 | const PC *FindClause(C type) { return FindClause(GetContext(), type); } |
279 | |
280 | // Check if the given clause is present in the given context |
281 | const PC *FindClause(DirectiveContext &context, C type) { |
282 | auto it{context.clauseInfo.find(type)}; |
283 | if (it != context.clauseInfo.end()) { |
284 | return it->second; |
285 | } |
286 | return nullptr; |
287 | } |
288 | |
289 | // Check if the given clause is present in the parent context |
290 | const PC *FindClauseParent(C type) { |
291 | auto it{GetContextParent().clauseInfo.find(type)}; |
292 | if (it != GetContextParent().clauseInfo.end()) { |
293 | return it->second; |
294 | } |
295 | return nullptr; |
296 | } |
297 | |
298 | llvm::iterator_range<typename ClauseMapTy::iterator> FindClauses(C type) { |
299 | auto it{GetContext().clauseInfo.equal_range(type)}; |
300 | return llvm::make_range(it); |
301 | } |
302 | |
303 | DirectiveContext *GetEnclosingDirContext() { |
304 | CHECK(!dirContext_.empty()); |
305 | auto it{dirContext_.rbegin()}; |
306 | if (++it != dirContext_.rend()) { |
307 | return &(*it); |
308 | } |
309 | return nullptr; |
310 | } |
311 | |
312 | void PushContext(const parser::CharBlock &source, D dir) { |
313 | dirContext_.emplace_back(source, dir); |
314 | } |
315 | |
316 | DirectiveContext *GetEnclosingContextWithDir(D dir) { |
317 | CHECK(!dirContext_.empty()); |
318 | auto it{dirContext_.rbegin()}; |
319 | while (++it != dirContext_.rend()) { |
320 | if (it->directive == dir) { |
321 | return &(*it); |
322 | } |
323 | } |
324 | return nullptr; |
325 | } |
326 | |
327 | bool CurrentDirectiveIsNested() { return dirContext_.size() > 1; }; |
328 | |
329 | void SetClauseSets(D dir) { |
330 | dirContext_.back().allowedClauses = directiveClausesMap_[dir].allowed; |
331 | dirContext_.back().allowedOnceClauses = |
332 | directiveClausesMap_[dir].allowedOnce; |
333 | dirContext_.back().allowedExclusiveClauses = |
334 | directiveClausesMap_[dir].allowedExclusive; |
335 | dirContext_.back().requiredClauses = |
336 | directiveClausesMap_[dir].requiredOneOf; |
337 | } |
338 | void PushContextAndClauseSets(const parser::CharBlock &source, D dir) { |
339 | PushContext(source, dir); |
340 | SetClauseSets(dir); |
341 | } |
342 | |
343 | void SayNotMatching(const parser::CharBlock &, const parser::CharBlock &); |
344 | |
345 | template <typename B> void CheckMatching(const B &beginDir, const B &endDir) { |
346 | const auto &begin{beginDir.v}; |
347 | const auto &end{endDir.v}; |
348 | if (begin != end) { |
349 | SayNotMatching(beginDir.source, endDir.source); |
350 | } |
351 | } |
352 | // Check illegal branching out of `Parser::Block` for `Parser::Name` based |
353 | // nodes (example `Parser::ExitStmt`) |
354 | void CheckNoBranching(const parser::Block &block, D directive, |
355 | const parser::CharBlock &directiveSource); |
356 | |
357 | // Check that only clauses in set are after the specific clauses. |
358 | void CheckOnlyAllowedAfter(C clause, common::EnumSet<C, ClauseEnumSize> set); |
359 | |
360 | void CheckRequireAtLeastOneOf(bool warnInsteadOfError = false); |
361 | |
362 | // Check if a clause is allowed on a directive. Returns true if is and |
363 | // false otherwise. |
364 | bool CheckAllowed(C clause, bool warnInsteadOfError = false); |
365 | |
366 | // Check that the clause appears only once. The counter is reset when the |
367 | // separator clause appears. |
368 | void CheckAllowedOncePerGroup(C clause, C separator); |
369 | |
370 | void CheckMutuallyExclusivePerGroup( |
371 | C clause, C separator, common::EnumSet<C, ClauseEnumSize> set); |
372 | |
373 | void CheckAtLeastOneClause(); |
374 | |
375 | void CheckNotAllowedIfClause( |
376 | C clause, common::EnumSet<C, ClauseEnumSize> set); |
377 | |
378 | std::string ContextDirectiveAsFortran(); |
379 | |
380 | void RequiresConstantPositiveParameter( |
381 | const C &clause, const parser::ScalarIntConstantExpr &i); |
382 | |
383 | void RequiresPositiveParameter(const C &clause, |
384 | const parser::ScalarIntExpr &i, llvm::StringRef paramName = "parameter"); |
385 | |
386 | void OptionalConstantPositiveParameter( |
387 | const C &clause, const std::optional<parser::ScalarIntConstantExpr> &o); |
388 | |
389 | virtual llvm::StringRef getClauseName(C clause) { return ""; }; |
390 | |
391 | virtual llvm::StringRef getDirectiveName(D directive) { return ""; }; |
392 | |
393 | SemanticsContext &context_; |
394 | std::vector<DirectiveContext> dirContext_; // used as a stack |
395 | std::unordered_map<D, DirectiveClauses<C, ClauseEnumSize>> |
396 | directiveClausesMap_; |
397 | |
398 | std::string ClauseSetToString(const common::EnumSet<C, ClauseEnumSize> set); |
399 | }; |
400 | |
401 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
402 | void DirectiveStructureChecker<D, C, PC, ClauseEnumSize>::CheckNoBranching( |
403 | const parser::Block &block, D directive, |
404 | const parser::CharBlock &directiveSource) { |
405 | NoBranchingEnforce<D> noBranchingEnforce{ |
406 | context_, directiveSource, directive, ContextDirectiveAsFortran()}; |
407 | parser::Walk(block, noBranchingEnforce); |
408 | } |
409 | |
410 | // Check that only clauses included in the given set are present after the given |
411 | // clause. |
412 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
413 | void DirectiveStructureChecker<D, C, PC, ClauseEnumSize>::CheckOnlyAllowedAfter( |
414 | C clause, common::EnumSet<C, ClauseEnumSize> set) { |
415 | bool enforceCheck = false; |
416 | for (auto cl : GetContext().actualClauses) { |
417 | if (cl == clause) { |
418 | enforceCheck = true; |
419 | continue; |
420 | } else if (enforceCheck && !set.test(cl)) { |
421 | auto parserClause = GetContext().clauseInfo.find(cl); |
422 | context_.Say(parserClause->second->source, |
423 | "Clause %s is not allowed after clause %s on the %s " |
424 | "directive"_err_en_US, |
425 | parser::ToUpperCaseLetters(getClauseName(cl).str()), |
426 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
427 | ContextDirectiveAsFortran()); |
428 | } |
429 | } |
430 | } |
431 | |
432 | // Check that at least one clause is attached to the directive. |
433 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
434 | void DirectiveStructureChecker<D, C, PC, |
435 | ClauseEnumSize>::CheckAtLeastOneClause() { |
436 | if (GetContext().actualClauses.empty()) { |
437 | context_.Say(GetContext().directiveSource, |
438 | "At least one clause is required on the %s directive"_err_en_US, |
439 | ContextDirectiveAsFortran()); |
440 | } |
441 | } |
442 | |
443 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
444 | std::string |
445 | DirectiveStructureChecker<D, C, PC, ClauseEnumSize>::ClauseSetToString( |
446 | const common::EnumSet<C, ClauseEnumSize> set) { |
447 | std::string list; |
448 | set.IterateOverMembers([&](C o) { |
449 | if (!list.empty()) |
450 | list.append(s: ", "); |
451 | list.append(parser::ToUpperCaseLetters(getClauseName(o).str())); |
452 | }); |
453 | return list; |
454 | } |
455 | |
456 | // Check that at least one clause in the required set is present on the |
457 | // directive. |
458 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
459 | void DirectiveStructureChecker<D, C, PC, |
460 | ClauseEnumSize>::CheckRequireAtLeastOneOf(bool warnInsteadOfError) { |
461 | if (GetContext().requiredClauses.empty()) { |
462 | return; |
463 | } |
464 | for (auto cl : GetContext().actualClauses) { |
465 | if (GetContext().requiredClauses.test(cl)) { |
466 | return; |
467 | } |
468 | } |
469 | // No clause matched in the actual clauses list |
470 | if (warnInsteadOfError) { |
471 | context_.Warn(common::UsageWarning::Portability, |
472 | GetContext().directiveSource, |
473 | "At least one of %s clause should appear on the %s directive"_port_en_US, |
474 | ClauseSetToString(GetContext().requiredClauses), |
475 | ContextDirectiveAsFortran()); |
476 | } else { |
477 | context_.Say(GetContext().directiveSource, |
478 | "At least one of %s clause must appear on the %s directive"_err_en_US, |
479 | ClauseSetToString(GetContext().requiredClauses), |
480 | ContextDirectiveAsFortran()); |
481 | } |
482 | } |
483 | |
484 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
485 | std::string DirectiveStructureChecker<D, C, PC, |
486 | ClauseEnumSize>::ContextDirectiveAsFortran() { |
487 | return parser::ToUpperCaseLetters( |
488 | getDirectiveName(GetContext().directive).str()); |
489 | } |
490 | |
491 | // Check that clauses present on the directive are allowed clauses. |
492 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
493 | bool DirectiveStructureChecker<D, C, PC, ClauseEnumSize>::CheckAllowed( |
494 | C clause, bool warnInsteadOfError) { |
495 | if (!GetContext().allowedClauses.test(clause) && |
496 | !GetContext().allowedOnceClauses.test(clause) && |
497 | !GetContext().allowedExclusiveClauses.test(clause) && |
498 | !GetContext().requiredClauses.test(clause)) { |
499 | if (warnInsteadOfError) { |
500 | context_.Warn(common::UsageWarning::Portability, |
501 | GetContext().clauseSource, |
502 | "%s clause is not allowed on the %s directive and will be ignored"_port_en_US, |
503 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
504 | parser::ToUpperCaseLetters(GetContext().directiveSource.ToString())); |
505 | } else { |
506 | context_.Say(GetContext().clauseSource, |
507 | "%s clause is not allowed on the %s directive"_err_en_US, |
508 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
509 | parser::ToUpperCaseLetters(GetContext().directiveSource.ToString())); |
510 | } |
511 | return false; |
512 | } |
513 | if ((GetContext().allowedOnceClauses.test(clause) || |
514 | GetContext().allowedExclusiveClauses.test(clause)) && |
515 | FindClause(clause)) { |
516 | context_.Say(GetContext().clauseSource, |
517 | "At most one %s clause can appear on the %s directive"_err_en_US, |
518 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
519 | parser::ToUpperCaseLetters(GetContext().directiveSource.ToString())); |
520 | return false; |
521 | } |
522 | if (GetContext().allowedExclusiveClauses.test(clause)) { |
523 | std::vector<C> others; |
524 | GetContext().allowedExclusiveClauses.IterateOverMembers([&](C o) { |
525 | if (FindClause(o)) { |
526 | others.emplace_back(o); |
527 | } |
528 | }); |
529 | for (const auto &e : others) { |
530 | context_.Say(GetContext().clauseSource, |
531 | "%s and %s clauses are mutually exclusive and may not appear on the " |
532 | "same %s directive"_err_en_US, |
533 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
534 | parser::ToUpperCaseLetters(getClauseName(e).str()), |
535 | parser::ToUpperCaseLetters(GetContext().directiveSource.ToString())); |
536 | } |
537 | if (!others.empty()) { |
538 | return false; |
539 | } |
540 | } |
541 | SetContextClauseInfo(clause); |
542 | AddClauseToCrtContext(type: clause); |
543 | AddClauseToCrtGroupInContext(type: clause); |
544 | return true; |
545 | } |
546 | |
547 | // Enforce restriction where clauses in the given set are not allowed if the |
548 | // given clause appears. |
549 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
550 | void DirectiveStructureChecker<D, C, PC, |
551 | ClauseEnumSize>::CheckNotAllowedIfClause(C clause, |
552 | common::EnumSet<C, ClauseEnumSize> set) { |
553 | if (!llvm::is_contained(GetContext().actualClauses, clause)) { |
554 | return; // Clause is not present |
555 | } |
556 | |
557 | for (auto cl : GetContext().actualClauses) { |
558 | if (set.test(cl)) { |
559 | context_.Say(GetContext().directiveSource, |
560 | "Clause %s is not allowed if clause %s appears on the %s directive"_err_en_US, |
561 | parser::ToUpperCaseLetters(getClauseName(cl).str()), |
562 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
563 | ContextDirectiveAsFortran()); |
564 | } |
565 | } |
566 | } |
567 | |
568 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
569 | void DirectiveStructureChecker<D, C, PC, |
570 | ClauseEnumSize>::CheckAllowedOncePerGroup(C clause, C separator) { |
571 | bool clauseIsPresent = false; |
572 | for (auto cl : GetContext().actualClauses) { |
573 | if (cl == clause) { |
574 | if (clauseIsPresent) { |
575 | context_.Say(GetContext().clauseSource, |
576 | "At most one %s clause can appear on the %s directive or in group separated by the %s clause"_err_en_US, |
577 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
578 | parser::ToUpperCaseLetters(GetContext().directiveSource.ToString()), |
579 | parser::ToUpperCaseLetters(getClauseName(separator).str())); |
580 | } else { |
581 | clauseIsPresent = true; |
582 | } |
583 | } |
584 | if (cl == separator) |
585 | clauseIsPresent = false; |
586 | } |
587 | } |
588 | |
589 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
590 | void DirectiveStructureChecker<D, C, PC, |
591 | ClauseEnumSize>::CheckMutuallyExclusivePerGroup(C clause, C separator, |
592 | common::EnumSet<C, ClauseEnumSize> set) { |
593 | |
594 | // Checking of there is any offending clauses before the first separator. |
595 | for (auto cl : GetContext().actualClauses) { |
596 | if (cl == separator) { |
597 | break; |
598 | } |
599 | if (set.test(cl)) { |
600 | context_.Say(GetContext().directiveSource, |
601 | "Clause %s is not allowed if clause %s appears on the %s directive"_err_en_US, |
602 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
603 | parser::ToUpperCaseLetters(getClauseName(cl).str()), |
604 | ContextDirectiveAsFortran()); |
605 | } |
606 | } |
607 | |
608 | // Checking for mutually exclusive clauses in the current group. |
609 | for (auto cl : GetContext().crtGroup) { |
610 | if (set.test(cl)) { |
611 | context_.Say(GetContext().directiveSource, |
612 | "Clause %s is not allowed if clause %s appears on the %s directive"_err_en_US, |
613 | parser::ToUpperCaseLetters(getClauseName(clause).str()), |
614 | parser::ToUpperCaseLetters(getClauseName(cl).str()), |
615 | ContextDirectiveAsFortran()); |
616 | } |
617 | } |
618 | } |
619 | |
620 | // Check the value of the clause is a constant positive integer. |
621 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
622 | void DirectiveStructureChecker<D, C, PC, |
623 | ClauseEnumSize>::RequiresConstantPositiveParameter(const C &clause, |
624 | const parser::ScalarIntConstantExpr &i) { |
625 | if (const auto v{GetIntValue(i)}) { |
626 | if (*v <= 0) { |
627 | context_.Say(GetContext().clauseSource, |
628 | "The parameter of the %s clause must be " |
629 | "a constant positive integer expression"_err_en_US, |
630 | parser::ToUpperCaseLetters(getClauseName(clause).str())); |
631 | } |
632 | } |
633 | } |
634 | |
635 | // Check the value of the clause is a constant positive parameter. |
636 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
637 | void DirectiveStructureChecker<D, C, PC, |
638 | ClauseEnumSize>::OptionalConstantPositiveParameter(const C &clause, |
639 | const std::optional<parser::ScalarIntConstantExpr> &o) { |
640 | if (o != std::nullopt) { |
641 | RequiresConstantPositiveParameter(clause, o.value()); |
642 | } |
643 | } |
644 | |
645 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
646 | void DirectiveStructureChecker<D, C, PC, ClauseEnumSize>::SayNotMatching( |
647 | const parser::CharBlock &beginSource, const parser::CharBlock &endSource) { |
648 | context_ |
649 | .Say(endSource, "Unmatched %s directive"_err_en_US, |
650 | parser::ToUpperCaseLetters(endSource.ToString())) |
651 | .Attach(beginSource, "Does not match directive"_en_US); |
652 | } |
653 | |
654 | // Check the value of the clause is a positive parameter. |
655 | template <typename D, typename C, typename PC, std::size_t ClauseEnumSize> |
656 | void DirectiveStructureChecker<D, C, PC, |
657 | ClauseEnumSize>::RequiresPositiveParameter(const C &clause, |
658 | const parser::ScalarIntExpr &i, llvm::StringRef paramName) { |
659 | if (const auto v{GetIntValue(i)}) { |
660 | if (*v < 0) { |
661 | context_.Say(GetContext().clauseSource, |
662 | "The %s of the %s clause must be " |
663 | "a positive integer expression"_err_en_US, |
664 | paramName.str(), |
665 | parser::ToUpperCaseLetters(getClauseName(clause).str())); |
666 | } |
667 | } |
668 | } |
669 | |
670 | } // namespace Fortran::semantics |
671 | |
672 | #endif // FORTRAN_SEMANTICS_CHECK_DIRECTIVE_STRUCTURE_H_ |
673 |
Definitions
- DirectiveClauses
- NoBranchingEnforce
- NoBranchingEnforce
- Pre
- Post
- Pre
- Pre
- Post
- Post
- Post
- Post
- GetEnclosingMsg
- EmitBranchOutError
- EmitUnlabelledBranchOutError
- EmitBranchOutErrorWithName
- CheckConstructNameBranching
- CheckConstructNameBranching
- DirectiveStructureChecker
- DirectiveStructureChecker
- ~DirectiveStructureChecker
- DirectiveContext
- DirectiveContext
- SetLoopIv
- GetContext
- GetContextParent
- SetContextClause
- ResetPartialContext
- SetContextDirectiveSource
- SetContextDirectiveEnum
- SetContextAllowed
- SetContextAllowedOnce
- SetContextAllowedExclusive
- SetContextRequired
- SetContextClauseInfo
- AddClauseToCrtContext
- AddClauseToCrtGroupInContext
- ResetCrtGroup
- FindClause
- FindClause
- FindClauseParent
- FindClauses
- GetEnclosingDirContext
- PushContext
- GetEnclosingContextWithDir
- CurrentDirectiveIsNested
- SetClauseSets
- PushContextAndClauseSets
- CheckMatching
- getClauseName
- getDirectiveName
- CheckNoBranching
- CheckOnlyAllowedAfter
- CheckAtLeastOneClause
- ClauseSetToString
- CheckRequireAtLeastOneOf
- ContextDirectiveAsFortran
- CheckAllowed
- CheckNotAllowedIfClause
- CheckAllowedOncePerGroup
- CheckMutuallyExclusivePerGroup
- RequiresConstantPositiveParameter
- OptionalConstantPositiveParameter
- SayNotMatching
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