llvm/flang/lib/semantics/check-stop.cc
Tim Keith 2107b223cb [flang] Use SomeExpr rather than GenericExprWrapper in checkers
Use GetExpr in checker classes to get analyzed expressions out of parse
tree nodes. Don't assume that they are always present. Change the
utility functions in tools.h to use SomeExpr rather than
GenericExprWrapper.

Original-commit: flang-compiler/f18@594e30d462
Reviewed-on: https://github.com/flang-compiler/f18/pull/422
Tree-same-pre-rewrite: false
2019-04-19 08:22:28 -07:00

48 lines
1.7 KiB
C++

// Copyright (c) 2019, Arm Ltd. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "check-stop.h"
#include "semantics.h"
#include "tools.h"
#include "../common/Fortran.h"
#include "../evaluate/expression.h"
#include "../parser/parse-tree.h"
#include <optional>
namespace Fortran::semantics {
void StopChecker::Enter(const parser::StopStmt &stmt) {
const auto &stopCode{std::get<std::optional<parser::StopCode>>(stmt.t)};
if (const auto *expr{GetExpr(stopCode)}) {
const parser::CharBlock &source{parser::FindSourceLocation(stopCode)};
if (ExprHasTypeCategory(*expr, common::TypeCategory::Integer)) {
// C1171 default kind
if (!ExprTypeKindIsDefault(*expr, context_)) {
context_.Say(
source, "INTEGER stop code must be of default kind"_err_en_US);
}
} else if (ExprHasTypeCategory(*expr, common::TypeCategory::Character)) {
// R1162 spells scalar-DEFAULT-char-expr
if (!ExprTypeKindIsDefault(*expr, context_)) {
context_.Say(
source, "CHARACTER stop code must be of default kind"_err_en_US);
}
} else {
context_.Say(
source, "Stop code must be of INTEGER or CHARACTER type"_err_en_US);
}
}
}
} // namespace Fortran::semantics