| //===-- lib/Parser/executable-parsers.cpp ---------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Per-type parsers for executable statements |
| |
| #include "basic-parsers.h" |
| #include "debug-parser.h" |
| #include "expr-parsers.h" |
| #include "misc-parsers.h" |
| #include "stmt-parser.h" |
| #include "token-parsers.h" |
| #include "type-parser-implementation.h" |
| #include "flang/Parser/characters.h" |
| #include "flang/Parser/parse-tree.h" |
| |
| namespace Fortran::parser { |
| |
| // Fortran allows the statement with the corresponding label at the end of |
| // a do-construct that begins with an old-style label-do-stmt to be a |
| // new-style END DO statement; e.g., DO 10 I=1,N; ...; 10 END DO. Usually, |
| // END DO statements appear only at the ends of do-constructs that begin |
| // with a nonlabel-do-stmt, so care must be taken to recognize this case and |
| // essentially treat them like CONTINUE statements. |
| |
| // R514 executable-construct -> |
| // action-stmt | associate-construct | block-construct | |
| // case-construct | change-team-construct | critical-construct | |
| // do-construct | if-construct | select-rank-construct | |
| // select-type-construct | where-construct | forall-construct |
| constexpr auto executableConstruct{ |
| first(construct<ExecutableConstruct>(CapturedLabelDoStmt{}), |
| construct<ExecutableConstruct>(EndDoStmtForCapturedLabelDoStmt{}), |
| construct<ExecutableConstruct>(indirect(Parser<DoConstruct>{})), |
| // Attempt DO statements before assignment statements for better |
| // error messages in cases like "DO10I=1,(error)". |
| construct<ExecutableConstruct>(statement(actionStmt)), |
| construct<ExecutableConstruct>(indirect(Parser<AssociateConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<BlockConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<CaseConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<ChangeTeamConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<CriticalConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<IfConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<SelectRankConstruct>{})), |
| construct<ExecutableConstruct>(indirect(Parser<SelectTypeConstruct>{})), |
| construct<ExecutableConstruct>(indirect(whereConstruct)), |
| construct<ExecutableConstruct>(indirect(forallConstruct)), |
| construct<ExecutableConstruct>(indirect(ompEndLoopDirective)), |
| construct<ExecutableConstruct>(indirect(openmpConstruct)), |
| construct<ExecutableConstruct>(indirect(accEndCombinedDirective)), |
| construct<ExecutableConstruct>(indirect(openaccConstruct)), |
| construct<ExecutableConstruct>(indirect(compilerDirective)))}; |
| |
| // R510 execution-part-construct -> |
| // executable-construct | format-stmt | entry-stmt | data-stmt |
| // Extension (PGI/Intel): also accept NAMELIST in execution part |
| constexpr auto obsoleteExecutionPartConstruct{recovery(ignoredStatementPrefix >> |
| fail<ExecutionPartConstruct>( |
| "obsolete legacy extension is not supported"_err_en_US), |
| construct<ExecutionPartConstruct>(construct<ErrorRecovery>(ok / |
| statement("REDIMENSION" >> name / |
| parenthesized(nonemptyList(Parser<AllocateShapeSpec>{}))))))}; |
| |
| TYPE_PARSER(recovery( |
| withMessage("expected execution part construct"_err_en_US, |
| CONTEXT_PARSER("execution part construct"_en_US, |
| first(construct<ExecutionPartConstruct>(executableConstruct), |
| construct<ExecutionPartConstruct>( |
| statement(indirect(formatStmt))), |
| construct<ExecutionPartConstruct>( |
| statement(indirect(entryStmt))), |
| construct<ExecutionPartConstruct>( |
| statement(indirect(dataStmt))), |
| extension<LanguageFeature::ExecutionPartNamelist>( |
| construct<ExecutionPartConstruct>( |
| statement(indirect(Parser<NamelistStmt>{})))), |
| obsoleteExecutionPartConstruct))), |
| construct<ExecutionPartConstruct>(executionPartErrorRecovery))) |
| |
| // R509 execution-part -> executable-construct [execution-part-construct]... |
| TYPE_CONTEXT_PARSER("execution part"_en_US, |
| construct<ExecutionPart>(many(executionPartConstruct))) |
| |
| // R515 action-stmt -> |
| // allocate-stmt | assignment-stmt | backspace-stmt | call-stmt | |
| // close-stmt | continue-stmt | cycle-stmt | deallocate-stmt | |
| // endfile-stmt | error-stop-stmt | event-post-stmt | event-wait-stmt | |
| // exit-stmt | fail-image-stmt | flush-stmt | form-team-stmt | |
| // goto-stmt | if-stmt | inquire-stmt | lock-stmt | nullify-stmt | |
| // open-stmt | pointer-assignment-stmt | print-stmt | read-stmt | |
| // return-stmt | rewind-stmt | stop-stmt | sync-all-stmt | |
| // sync-images-stmt | sync-memory-stmt | sync-team-stmt | unlock-stmt | |
| // wait-stmt | where-stmt | write-stmt | computed-goto-stmt | forall-stmt |
| // R1159 continue-stmt -> CONTINUE |
| // R1163 fail-image-stmt -> FAIL IMAGE |
| TYPE_PARSER(first(construct<ActionStmt>(indirect(Parser<AllocateStmt>{})), |
| construct<ActionStmt>(indirect(assignmentStmt)), |
| construct<ActionStmt>(indirect(pointerAssignmentStmt)), |
| construct<ActionStmt>(indirect(Parser<BackspaceStmt>{})), |
| construct<ActionStmt>(indirect(Parser<CallStmt>{})), |
| construct<ActionStmt>(indirect(Parser<CloseStmt>{})), |
| construct<ActionStmt>(construct<ContinueStmt>("CONTINUE"_tok)), |
| construct<ActionStmt>(indirect(Parser<CycleStmt>{})), |
| construct<ActionStmt>(indirect(Parser<DeallocateStmt>{})), |
| construct<ActionStmt>(indirect(Parser<EndfileStmt>{})), |
| construct<ActionStmt>(indirect(Parser<EventPostStmt>{})), |
| construct<ActionStmt>(indirect(Parser<EventWaitStmt>{})), |
| construct<ActionStmt>(indirect(Parser<ExitStmt>{})), |
| construct<ActionStmt>(construct<FailImageStmt>("FAIL IMAGE"_sptok)), |
| construct<ActionStmt>(indirect(Parser<FlushStmt>{})), |
| construct<ActionStmt>(indirect(Parser<FormTeamStmt>{})), |
| construct<ActionStmt>(indirect(Parser<GotoStmt>{})), |
| construct<ActionStmt>(indirect(Parser<IfStmt>{})), |
| construct<ActionStmt>(indirect(Parser<InquireStmt>{})), |
| construct<ActionStmt>(indirect(Parser<LockStmt>{})), |
| construct<ActionStmt>(indirect(Parser<NullifyStmt>{})), |
| construct<ActionStmt>(indirect(Parser<OpenStmt>{})), |
| construct<ActionStmt>(indirect(Parser<PrintStmt>{})), |
| construct<ActionStmt>(indirect(Parser<ReadStmt>{})), |
| construct<ActionStmt>(indirect(Parser<ReturnStmt>{})), |
| construct<ActionStmt>(indirect(Parser<RewindStmt>{})), |
| construct<ActionStmt>(indirect(Parser<StopStmt>{})), // & error-stop-stmt |
| construct<ActionStmt>(indirect(Parser<SyncAllStmt>{})), |
| construct<ActionStmt>(indirect(Parser<SyncImagesStmt>{})), |
| construct<ActionStmt>(indirect(Parser<SyncMemoryStmt>{})), |
| construct<ActionStmt>(indirect(Parser<SyncTeamStmt>{})), |
| construct<ActionStmt>(indirect(Parser<UnlockStmt>{})), |
| construct<ActionStmt>(indirect(Parser<WaitStmt>{})), |
| construct<ActionStmt>(indirect(whereStmt)), |
| construct<ActionStmt>(indirect(Parser<WriteStmt>{})), |
| construct<ActionStmt>(indirect(Parser<ComputedGotoStmt>{})), |
| construct<ActionStmt>(indirect(forallStmt)), |
| construct<ActionStmt>(indirect(Parser<ArithmeticIfStmt>{})), |
| construct<ActionStmt>(indirect(Parser<AssignStmt>{})), |
| construct<ActionStmt>(indirect(Parser<AssignedGotoStmt>{})), |
| construct<ActionStmt>(indirect(Parser<PauseStmt>{})))) |
| |
| // R1102 associate-construct -> associate-stmt block end-associate-stmt |
| TYPE_CONTEXT_PARSER("ASSOCIATE construct"_en_US, |
| construct<AssociateConstruct>(statement(Parser<AssociateStmt>{}), block, |
| statement(Parser<EndAssociateStmt>{}))) |
| |
| // R1103 associate-stmt -> |
| // [associate-construct-name :] ASSOCIATE ( association-list ) |
| TYPE_CONTEXT_PARSER("ASSOCIATE statement"_en_US, |
| construct<AssociateStmt>(maybe(name / ":"), |
| "ASSOCIATE" >> parenthesized(nonemptyList(Parser<Association>{})))) |
| |
| // R1104 association -> associate-name => selector |
| TYPE_PARSER(construct<Association>(name, "=>" >> selector)) |
| |
| // R1105 selector -> expr | variable |
| TYPE_PARSER(construct<Selector>(variable) / lookAhead(","_tok || ")"_tok) || |
| construct<Selector>(expr)) |
| |
| // R1106 end-associate-stmt -> END ASSOCIATE [associate-construct-name] |
| TYPE_PARSER(construct<EndAssociateStmt>( |
| recovery("END ASSOCIATE" >> maybe(name), endStmtErrorRecovery))) |
| |
| // R1107 block-construct -> |
| // block-stmt [block-specification-part] block end-block-stmt |
| TYPE_CONTEXT_PARSER("BLOCK construct"_en_US, |
| construct<BlockConstruct>(statement(Parser<BlockStmt>{}), |
| Parser<BlockSpecificationPart>{}, // can be empty |
| block, statement(Parser<EndBlockStmt>{}))) |
| |
| // R1108 block-stmt -> [block-construct-name :] BLOCK |
| TYPE_PARSER(construct<BlockStmt>(maybe(name / ":") / "BLOCK")) |
| |
| // R1109 block-specification-part -> |
| // [use-stmt]... [import-stmt]... [implicit-part] |
| // [[declaration-construct]... specification-construct] |
| // C1107 prohibits COMMON, EQUIVALENCE, INTENT, NAMELIST, OPTIONAL, VALUE, |
| // and statement function definitions. C1108 prohibits SAVE /common/. |
| // C1570 indirectly prohibits ENTRY. These constraints are best enforced later. |
| // The odd grammar rule above would have the effect of forcing any |
| // trailing FORMAT and DATA statements after the last specification-construct |
| // to be recognized as part of the block-construct's block part rather than |
| // its block-specification-part, a distinction without any apparent difference. |
| TYPE_PARSER(construct<BlockSpecificationPart>(specificationPart)) |
| |
| // R1110 end-block-stmt -> END BLOCK [block-construct-name] |
| TYPE_PARSER(construct<EndBlockStmt>( |
| recovery("END BLOCK" >> maybe(name), endStmtErrorRecovery))) |
| |
| // R1111 change-team-construct -> change-team-stmt block end-change-team-stmt |
| TYPE_CONTEXT_PARSER("CHANGE TEAM construct"_en_US, |
| construct<ChangeTeamConstruct>(statement(Parser<ChangeTeamStmt>{}), block, |
| statement(Parser<EndChangeTeamStmt>{}))) |
| |
| // R1112 change-team-stmt -> |
| // [team-construct-name :] CHANGE TEAM |
| // ( team-value [, coarray-association-list] [, sync-stat-list] ) |
| TYPE_CONTEXT_PARSER("CHANGE TEAM statement"_en_US, |
| construct<ChangeTeamStmt>(maybe(name / ":"), |
| "CHANGE TEAM"_sptok >> "("_tok >> teamValue, |
| defaulted("," >> nonemptyList(Parser<CoarrayAssociation>{})), |
| defaulted("," >> nonemptyList(statOrErrmsg))) / |
| ")") |
| |
| // R1113 coarray-association -> codimension-decl => selector |
| TYPE_PARSER( |
| construct<CoarrayAssociation>(Parser<CodimensionDecl>{}, "=>" >> selector)) |
| |
| // R1114 end-change-team-stmt -> |
| // END TEAM [( [sync-stat-list] )] [team-construct-name] |
| TYPE_CONTEXT_PARSER("END TEAM statement"_en_US, |
| construct<EndChangeTeamStmt>( |
| "END TEAM" >> defaulted(parenthesized(optionalList(statOrErrmsg))), |
| maybe(name))) |
| |
| // R1117 critical-stmt -> |
| // [critical-construct-name :] CRITICAL [( [sync-stat-list] )] |
| TYPE_CONTEXT_PARSER("CRITICAL statement"_en_US, |
| construct<CriticalStmt>(maybe(name / ":"), |
| "CRITICAL" >> defaulted(parenthesized(optionalList(statOrErrmsg))))) |
| |
| // R1116 critical-construct -> critical-stmt block end-critical-stmt |
| TYPE_CONTEXT_PARSER("CRITICAL construct"_en_US, |
| construct<CriticalConstruct>(statement(Parser<CriticalStmt>{}), block, |
| statement(Parser<EndCriticalStmt>{}))) |
| |
| // R1118 end-critical-stmt -> END CRITICAL [critical-construct-name] |
| TYPE_PARSER(construct<EndCriticalStmt>( |
| recovery("END CRITICAL" >> maybe(name), endStmtErrorRecovery))) |
| |
| // R1119 do-construct -> do-stmt block end-do |
| // R1120 do-stmt -> nonlabel-do-stmt | label-do-stmt |
| TYPE_CONTEXT_PARSER("DO construct"_en_US, |
| construct<DoConstruct>( |
| statement(Parser<NonLabelDoStmt>{}) / EnterNonlabelDoConstruct{}, block, |
| statement(Parser<EndDoStmt>{}) / LeaveDoConstruct{})) |
| |
| // R1125 concurrent-header -> |
| // ( [integer-type-spec ::] concurrent-control-list |
| // [, scalar-mask-expr] ) |
| TYPE_PARSER(parenthesized(construct<ConcurrentHeader>( |
| maybe(integerTypeSpec / "::"), nonemptyList(Parser<ConcurrentControl>{}), |
| maybe("," >> scalarLogicalExpr)))) |
| |
| // R1126 concurrent-control -> |
| // index-name = concurrent-limit : concurrent-limit [: concurrent-step] |
| // R1127 concurrent-limit -> scalar-int-expr |
| // R1128 concurrent-step -> scalar-int-expr |
| TYPE_PARSER(construct<ConcurrentControl>(name / "=", scalarIntExpr / ":", |
| scalarIntExpr, maybe(":" >> scalarIntExpr))) |
| |
| // R1130 locality-spec -> |
| // LOCAL ( variable-name-list ) | LOCAL_INIT ( variable-name-list ) | |
| // SHARED ( variable-name-list ) | DEFAULT ( NONE ) |
| TYPE_PARSER(construct<LocalitySpec>(construct<LocalitySpec::Local>( |
| "LOCAL" >> parenthesized(listOfNames))) || |
| construct<LocalitySpec>(construct<LocalitySpec::LocalInit>( |
| "LOCAL_INIT"_sptok >> parenthesized(listOfNames))) || |
| construct<LocalitySpec>(construct<LocalitySpec::Shared>( |
| "SHARED" >> parenthesized(listOfNames))) || |
| construct<LocalitySpec>( |
| construct<LocalitySpec::DefaultNone>("DEFAULT ( NONE )"_tok))) |
| |
| // R1123 loop-control -> |
| // [,] do-variable = scalar-int-expr , scalar-int-expr |
| // [, scalar-int-expr] | |
| // [,] WHILE ( scalar-logical-expr ) | |
| // [,] CONCURRENT concurrent-header concurrent-locality |
| // R1129 concurrent-locality -> [locality-spec]... |
| TYPE_CONTEXT_PARSER("loop control"_en_US, |
| maybe(","_tok) >> |
| (construct<LoopControl>(loopBounds(scalarExpr)) || |
| construct<LoopControl>( |
| "WHILE" >> parenthesized(scalarLogicalExpr)) || |
| construct<LoopControl>(construct<LoopControl::Concurrent>( |
| "CONCURRENT" >> concurrentHeader, |
| many(Parser<LocalitySpec>{}))))) |
| |
| // R1121 label-do-stmt -> [do-construct-name :] DO label [loop-control] |
| TYPE_CONTEXT_PARSER("label DO statement"_en_US, |
| construct<LabelDoStmt>( |
| maybe(name / ":"), "DO" >> label, maybe(loopControl))) |
| |
| // R1122 nonlabel-do-stmt -> [do-construct-name :] DO [loop-control] |
| TYPE_CONTEXT_PARSER("nonlabel DO statement"_en_US, |
| construct<NonLabelDoStmt>(maybe(name / ":"), "DO" >> maybe(loopControl))) |
| |
| // R1132 end-do-stmt -> END DO [do-construct-name] |
| TYPE_CONTEXT_PARSER("END DO statement"_en_US, |
| construct<EndDoStmt>( |
| recovery("END DO" >> maybe(name), endStmtErrorRecovery))) |
| |
| // R1133 cycle-stmt -> CYCLE [do-construct-name] |
| TYPE_CONTEXT_PARSER( |
| "CYCLE statement"_en_US, construct<CycleStmt>("CYCLE" >> maybe(name))) |
| |
| // R1134 if-construct -> |
| // if-then-stmt block [else-if-stmt block]... |
| // [else-stmt block] end-if-stmt |
| // R1135 if-then-stmt -> [if-construct-name :] IF ( scalar-logical-expr ) |
| // THEN R1136 else-if-stmt -> |
| // ELSE IF ( scalar-logical-expr ) THEN [if-construct-name] |
| // R1137 else-stmt -> ELSE [if-construct-name] |
| // R1138 end-if-stmt -> END IF [if-construct-name] |
| TYPE_CONTEXT_PARSER("IF construct"_en_US, |
| construct<IfConstruct>( |
| statement(construct<IfThenStmt>(maybe(name / ":"), |
| "IF" >> parenthesized(scalarLogicalExpr) / "THEN")), |
| block, |
| many(construct<IfConstruct::ElseIfBlock>( |
| unambiguousStatement(construct<ElseIfStmt>( |
| "ELSE IF" >> parenthesized(scalarLogicalExpr), |
| "THEN" >> maybe(name))), |
| block)), |
| maybe(construct<IfConstruct::ElseBlock>( |
| statement(construct<ElseStmt>("ELSE" >> maybe(name))), block)), |
| statement(construct<EndIfStmt>( |
| recovery("END IF" >> maybe(name), endStmtErrorRecovery))))) |
| |
| // R1139 if-stmt -> IF ( scalar-logical-expr ) action-stmt |
| TYPE_CONTEXT_PARSER("IF statement"_en_US, |
| construct<IfStmt>("IF" >> parenthesized(scalarLogicalExpr), |
| unlabeledStatement(actionStmt))) |
| |
| // R1140 case-construct -> |
| // select-case-stmt [case-stmt block]... end-select-stmt |
| TYPE_CONTEXT_PARSER("SELECT CASE construct"_en_US, |
| construct<CaseConstruct>(statement(Parser<SelectCaseStmt>{}), |
| many(construct<CaseConstruct::Case>( |
| unambiguousStatement(Parser<CaseStmt>{}), block)), |
| statement(endSelectStmt))) |
| |
| // R1141 select-case-stmt -> [case-construct-name :] SELECT CASE ( case-expr |
| // ) R1144 case-expr -> scalar-expr |
| TYPE_CONTEXT_PARSER("SELECT CASE statement"_en_US, |
| construct<SelectCaseStmt>( |
| maybe(name / ":"), "SELECT CASE" >> parenthesized(scalar(expr)))) |
| |
| // R1142 case-stmt -> CASE case-selector [case-construct-name] |
| TYPE_CONTEXT_PARSER("CASE statement"_en_US, |
| construct<CaseStmt>("CASE" >> Parser<CaseSelector>{}, maybe(name))) |
| |
| // R1143 end-select-stmt -> END SELECT [case-construct-name] |
| // R1151 end-select-rank-stmt -> END SELECT [select-construct-name] |
| // R1155 end-select-type-stmt -> END SELECT [select-construct-name] |
| TYPE_PARSER(construct<EndSelectStmt>( |
| recovery("END SELECT" >> maybe(name), endStmtErrorRecovery))) |
| |
| // R1145 case-selector -> ( case-value-range-list ) | DEFAULT |
| constexpr auto defaultKeyword{construct<Default>("DEFAULT"_tok)}; |
| TYPE_PARSER(parenthesized(construct<CaseSelector>( |
| nonemptyList(Parser<CaseValueRange>{}))) || |
| construct<CaseSelector>(defaultKeyword)) |
| |
| // R1147 case-value -> scalar-constant-expr |
| constexpr auto caseValue{scalar(constantExpr)}; |
| |
| // R1146 case-value-range -> |
| // case-value | case-value : | : case-value | case-value : case-value |
| TYPE_PARSER(construct<CaseValueRange>(construct<CaseValueRange::Range>( |
| construct<std::optional<CaseValue>>(caseValue), |
| ":" >> maybe(caseValue))) || |
| construct<CaseValueRange>( |
| construct<CaseValueRange::Range>(construct<std::optional<CaseValue>>(), |
| ":" >> construct<std::optional<CaseValue>>(caseValue))) || |
| construct<CaseValueRange>(caseValue)) |
| |
| // R1148 select-rank-construct -> |
| // select-rank-stmt [select-rank-case-stmt block]... |
| // end-select-rank-stmt |
| TYPE_CONTEXT_PARSER("SELECT RANK construct"_en_US, |
| construct<SelectRankConstruct>(statement(Parser<SelectRankStmt>{}), |
| many(construct<SelectRankConstruct::RankCase>( |
| unambiguousStatement(Parser<SelectRankCaseStmt>{}), block)), |
| statement(endSelectStmt))) |
| |
| // R1149 select-rank-stmt -> |
| // [select-construct-name :] SELECT RANK |
| // ( [associate-name =>] selector ) |
| TYPE_CONTEXT_PARSER("SELECT RANK statement"_en_US, |
| construct<SelectRankStmt>(maybe(name / ":"), |
| "SELECT RANK"_sptok >> "("_tok >> maybe(name / "=>"), selector / ")")) |
| |
| // R1150 select-rank-case-stmt -> |
| // RANK ( scalar-int-constant-expr ) [select-construct-name] | |
| // RANK ( * ) [select-construct-name] | |
| // RANK DEFAULT [select-construct-name] |
| TYPE_CONTEXT_PARSER("RANK case statement"_en_US, |
| "RANK" >> (construct<SelectRankCaseStmt>( |
| parenthesized(construct<SelectRankCaseStmt::Rank>( |
| scalarIntConstantExpr) || |
| construct<SelectRankCaseStmt::Rank>(star)) || |
| construct<SelectRankCaseStmt::Rank>(defaultKeyword), |
| maybe(name)))) |
| |
| // R1152 select-type-construct -> |
| // select-type-stmt [type-guard-stmt block]... end-select-type-stmt |
| TYPE_CONTEXT_PARSER("SELECT TYPE construct"_en_US, |
| construct<SelectTypeConstruct>(statement(Parser<SelectTypeStmt>{}), |
| many(construct<SelectTypeConstruct::TypeCase>( |
| unambiguousStatement(Parser<TypeGuardStmt>{}), block)), |
| statement(endSelectStmt))) |
| |
| // R1153 select-type-stmt -> |
| // [select-construct-name :] SELECT TYPE |
| // ( [associate-name =>] selector ) |
| TYPE_CONTEXT_PARSER("SELECT TYPE statement"_en_US, |
| construct<SelectTypeStmt>(maybe(name / ":"), |
| "SELECT TYPE (" >> maybe(name / "=>"), selector / ")")) |
| |
| // R1154 type-guard-stmt -> |
| // TYPE IS ( type-spec ) [select-construct-name] | |
| // CLASS IS ( derived-type-spec ) [select-construct-name] | |
| // CLASS DEFAULT [select-construct-name] |
| TYPE_CONTEXT_PARSER("type guard statement"_en_US, |
| construct<TypeGuardStmt>("TYPE IS"_sptok >> |
| parenthesized(construct<TypeGuardStmt::Guard>(typeSpec)) || |
| "CLASS IS"_sptok >> parenthesized(construct<TypeGuardStmt::Guard>( |
| derivedTypeSpec)) || |
| construct<TypeGuardStmt::Guard>("CLASS" >> defaultKeyword), |
| maybe(name))) |
| |
| // R1156 exit-stmt -> EXIT [construct-name] |
| TYPE_CONTEXT_PARSER( |
| "EXIT statement"_en_US, construct<ExitStmt>("EXIT" >> maybe(name))) |
| |
| // R1157 goto-stmt -> GO TO label |
| TYPE_CONTEXT_PARSER( |
| "GOTO statement"_en_US, construct<GotoStmt>("GO TO" >> label)) |
| |
| // R1158 computed-goto-stmt -> GO TO ( label-list ) [,] scalar-int-expr |
| TYPE_CONTEXT_PARSER("computed GOTO statement"_en_US, |
| construct<ComputedGotoStmt>("GO TO" >> parenthesized(nonemptyList(label)), |
| maybe(","_tok) >> scalarIntExpr)) |
| |
| // R1160 stop-stmt -> STOP [stop-code] [, QUIET = scalar-logical-expr] |
| // R1161 error-stop-stmt -> |
| // ERROR STOP [stop-code] [, QUIET = scalar-logical-expr] |
| TYPE_CONTEXT_PARSER("STOP statement"_en_US, |
| construct<StopStmt>("STOP" >> pure(StopStmt::Kind::Stop) || |
| "ERROR STOP"_sptok >> pure(StopStmt::Kind::ErrorStop), |
| maybe(Parser<StopCode>{}), maybe(", QUIET =" >> scalarLogicalExpr))) |
| |
| // R1162 stop-code -> scalar-default-char-expr | scalar-int-expr |
| // The two alternatives for stop-code can't be distinguished at |
| // parse time. |
| TYPE_PARSER(construct<StopCode>(scalar(expr))) |
| |
| // R1164 sync-all-stmt -> SYNC ALL [( [sync-stat-list] )] |
| TYPE_CONTEXT_PARSER("SYNC ALL statement"_en_US, |
| construct<SyncAllStmt>("SYNC ALL"_sptok >> |
| defaulted(parenthesized(optionalList(statOrErrmsg))))) |
| |
| // R1166 sync-images-stmt -> SYNC IMAGES ( image-set [, sync-stat-list] ) |
| // R1167 image-set -> int-expr | * |
| TYPE_CONTEXT_PARSER("SYNC IMAGES statement"_en_US, |
| "SYNC IMAGES"_sptok >> parenthesized(construct<SyncImagesStmt>( |
| construct<SyncImagesStmt::ImageSet>(intExpr) || |
| construct<SyncImagesStmt::ImageSet>(star), |
| defaulted("," >> nonemptyList(statOrErrmsg))))) |
| |
| // R1168 sync-memory-stmt -> SYNC MEMORY [( [sync-stat-list] )] |
| TYPE_CONTEXT_PARSER("SYNC MEMORY statement"_en_US, |
| construct<SyncMemoryStmt>("SYNC MEMORY"_sptok >> |
| defaulted(parenthesized(optionalList(statOrErrmsg))))) |
| |
| // R1169 sync-team-stmt -> SYNC TEAM ( team-value [, sync-stat-list] ) |
| TYPE_CONTEXT_PARSER("SYNC TEAM statement"_en_US, |
| construct<SyncTeamStmt>("SYNC TEAM"_sptok >> "("_tok >> teamValue, |
| defaulted("," >> nonemptyList(statOrErrmsg)) / ")")) |
| |
| // R1170 event-post-stmt -> EVENT POST ( event-variable [, sync-stat-list] ) |
| // R1171 event-variable -> scalar-variable |
| TYPE_CONTEXT_PARSER("EVENT POST statement"_en_US, |
| construct<EventPostStmt>("EVENT POST"_sptok >> "("_tok >> scalar(variable), |
| defaulted("," >> nonemptyList(statOrErrmsg)) / ")")) |
| |
| // R1172 event-wait-stmt -> |
| // EVENT WAIT ( event-variable [, event-wait-spec-list] ) |
| TYPE_CONTEXT_PARSER("EVENT WAIT statement"_en_US, |
| construct<EventWaitStmt>("EVENT WAIT"_sptok >> "("_tok >> scalar(variable), |
| defaulted("," >> nonemptyList(Parser<EventWaitStmt::EventWaitSpec>{})) / |
| ")")) |
| |
| // R1174 until-spec -> UNTIL_COUNT = scalar-int-expr |
| constexpr auto untilSpec{"UNTIL_COUNT =" >> scalarIntExpr}; |
| |
| // R1173 event-wait-spec -> until-spec | sync-stat |
| TYPE_PARSER(construct<EventWaitStmt::EventWaitSpec>(untilSpec) || |
| construct<EventWaitStmt::EventWaitSpec>(statOrErrmsg)) |
| |
| // R1177 team-variable -> scalar-variable |
| constexpr auto teamVariable{scalar(variable)}; |
| |
| // R1175 form-team-stmt -> |
| // FORM TEAM ( team-number , team-variable [, form-team-spec-list] ) |
| // R1176 team-number -> scalar-int-expr |
| TYPE_CONTEXT_PARSER("FORM TEAM statement"_en_US, |
| construct<FormTeamStmt>("FORM TEAM"_sptok >> "("_tok >> scalarIntExpr, |
| "," >> teamVariable, |
| defaulted("," >> nonemptyList(Parser<FormTeamStmt::FormTeamSpec>{})) / |
| ")")) |
| |
| // R1178 form-team-spec -> NEW_INDEX = scalar-int-expr | sync-stat |
| TYPE_PARSER( |
| construct<FormTeamStmt::FormTeamSpec>("NEW_INDEX =" >> scalarIntExpr) || |
| construct<FormTeamStmt::FormTeamSpec>(statOrErrmsg)) |
| |
| // R1182 lock-variable -> scalar-variable |
| constexpr auto lockVariable{scalar(variable)}; |
| |
| // R1179 lock-stmt -> LOCK ( lock-variable [, lock-stat-list] ) |
| TYPE_CONTEXT_PARSER("LOCK statement"_en_US, |
| construct<LockStmt>("LOCK (" >> lockVariable, |
| defaulted("," >> nonemptyList(Parser<LockStmt::LockStat>{})) / ")")) |
| |
| // R1180 lock-stat -> ACQUIRED_LOCK = scalar-logical-variable | sync-stat |
| TYPE_PARSER( |
| construct<LockStmt::LockStat>("ACQUIRED_LOCK =" >> scalarLogicalVariable) || |
| construct<LockStmt::LockStat>(statOrErrmsg)) |
| |
| // R1181 unlock-stmt -> UNLOCK ( lock-variable [, sync-stat-list] ) |
| TYPE_CONTEXT_PARSER("UNLOCK statement"_en_US, |
| construct<UnlockStmt>("UNLOCK (" >> lockVariable, |
| defaulted("," >> nonemptyList(statOrErrmsg)) / ")")) |
| |
| } // namespace Fortran::parser |
