forked from OSchip/llvm-project
40 lines
1.4 KiB
C++
40 lines
1.4 KiB
C++
//===-- lib/Semantics/check-purity.h ----------------------------*- C++ -*-===//
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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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#ifndef FORTRAN_SEMANTICS_CHECK_PURITY_H_
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#define FORTRAN_SEMANTICS_CHECK_PURITY_H_
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#include "flang/Semantics/semantics.h"
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#include <list>
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namespace Fortran::parser {
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struct ExecutableConstruct;
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struct SubroutineSubprogram;
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struct FunctionSubprogram;
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struct PrefixSpec;
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} // namespace Fortran::parser
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namespace Fortran::semantics {
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class PurityChecker : public virtual BaseChecker {
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public:
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explicit PurityChecker(SemanticsContext &c) : context_{c} {}
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void Enter(const parser::ExecutableConstruct &);
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void Enter(const parser::SubroutineSubprogram &);
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void Leave(const parser::SubroutineSubprogram &);
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void Enter(const parser::FunctionSubprogram &);
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void Leave(const parser::FunctionSubprogram &);
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private:
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bool InPureSubprogram() const;
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bool HasPurePrefix(const std::list<parser::PrefixSpec> &) const;
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void Entered(parser::CharBlock, const std::list<parser::PrefixSpec> &);
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void Left();
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SemanticsContext &context_;
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int depth_{0};
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int pureDepth_{-1};
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};
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} // namespace Fortran::semantics
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#endif
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