flang/lib/Semantics/check-stop.cpp

   1 //===-- lib/Semantics/check-stop.cpp --------------------------------------===//
   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 #include "check-stop.h"
  10 #include "flang/Common/Fortran.h"
  11 #include "flang/Evaluate/expression.h"
  12 #include "flang/Parser/parse-tree.h"
  13 #include "flang/Semantics/semantics.h"
  14 #include "flang/Semantics/tools.h"
  15 #include <optional>
  16
  17 namespace Fortran::semantics {
  18
  19 void StopChecker::Enter(const parser::StopStmt &stmt) {
  20   const auto &stopCode{std::get<std::optional<parser::StopCode>>(stmt.t)};
  21   if (const auto *expr{GetExpr(context_, stopCode)}) {
  22     const parser::CharBlock &source{parser::FindSourceLocation(stopCode)};
  23     if (ExprHasTypeCategory(*expr, common::TypeCategory::Integer)) {
  24       // C1171 default kind
  25       if (!ExprTypeKindIsDefault(*expr, context_)) {
  26         context_.Say(
  27             source, "INTEGER stop code must be of default kind"_err_en_US);
  28       }
  29     } else if (ExprHasTypeCategory(*expr, common::TypeCategory::Character)) {
  30       // R1162 spells scalar-DEFAULT-char-expr
  31       if (!ExprTypeKindIsDefault(*expr, context_)) {
  32         context_.Say(
  33             source, "CHARACTER stop code must be of default kind"_err_en_US);
  34       }
  35     } else {
  36       context_.Say(
  37           source, "Stop code must be of INTEGER or CHARACTER type"_err_en_US);
  38     }
  39   }
  40 }
  41
  42 } // namespace Fortran::semantics