46 lines
1.8 KiB
C++
46 lines
1.8 KiB
C++
//===-- lib/Semantics/check-arithmeticif.cpp ------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "check-arithmeticif.h"
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#include "flang/Parser/message.h"
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#include "flang/Parser/parse-tree.h"
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#include "flang/Semantics/tools.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 && 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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