2107b223cb
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
52 lines
2 KiB
C++
52 lines
2 KiB
C++
// Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "check-arithmeticif.h"
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#include "tools.h"
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#include "../parser/message.h"
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#include "../parser/parse-tree.h"
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namespace Fortran::semantics {
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bool IsNumericExpr(const SomeExpr &expr) {
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auto dynamicType{expr.GetType()};
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return dynamicType.has_value() &&
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common::IsNumericTypeCategory(dynamicType->category);
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}
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void ArithmeticIfStmtChecker::Leave(
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const parser::ArithmeticIfStmt &arithmeticIfStmt) {
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// Arithmetic IF statements have been removed from Fortran 2018.
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// The constraints and requirements here refer to the 2008 spec.
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// R853 Check for a scalar-numeric-expr
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// C849 that shall not be of type complex.
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auto &parsedExpr{std::get<parser::Expr>(arithmeticIfStmt.t)};
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if (const auto *expr{GetExpr(parsedExpr)}) {
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if (expr->Rank() > 0) {
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context_.Say(parsedExpr.source,
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"ARITHMETIC IF expression must be a scalar expression"_err_en_US);
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} else if (ExprHasTypeCategory(*expr, common::TypeCategory::Complex)) {
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context_.Say(parsedExpr.source,
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"ARITHMETIC IF expression must not be a COMPLEX expression"_err_en_US);
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} else if (!IsNumericExpr(*expr)) {
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context_.Say(parsedExpr.source,
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"ARITHMETIC IF expression must be a numeric expression"_err_en_US);
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}
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}
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// The labels have already been checked in resolve-labels.
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// TODO: Really? Check that they are really branch target
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// statements and in the same inclusive scope.
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}
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} // namespace Fortran::semantics
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