776145492f
Move HasError and SetError into SemanticsContext so that we can do consistency checks: if a symbol has an error or we want to set the error flag, check that an error has been reported. Original-commit: flang-compiler/f18@4f6e3a04ca Reviewed-on: https://github.com/flang-compiler/f18/pull/429
157 lines
4.8 KiB
C++
157 lines
4.8 KiB
C++
// Copyright (c) 2018-2019, 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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#ifndef FORTRAN_SEMANTICS_SEMANTICS_H_
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#define FORTRAN_SEMANTICS_SEMANTICS_H_
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#include "scope.h"
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#include "../evaluate/common.h"
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#include "../evaluate/intrinsics.h"
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#include "../parser/features.h"
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#include "../parser/message.h"
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#include <iosfwd>
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#include <string>
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#include <vector>
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namespace Fortran::common {
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class IntrinsicTypeDefaultKinds;
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}
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namespace Fortran::parser {
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struct Name;
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struct Program;
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class CookedSource;
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}
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namespace Fortran::semantics {
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class Symbol;
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class SemanticsContext {
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public:
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SemanticsContext(const common::IntrinsicTypeDefaultKinds &,
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const parser::LanguageFeatureControl &);
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const common::IntrinsicTypeDefaultKinds &defaultKinds() const {
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return defaultKinds_;
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}
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bool IsEnabled(parser::LanguageFeature) const;
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bool ShouldWarn(parser::LanguageFeature) const;
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const parser::CharBlock *location() const { return location_; }
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const std::vector<std::string> &searchDirectories() const {
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return searchDirectories_;
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}
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const std::string &moduleDirectory() const { return moduleDirectory_; }
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bool warnOnNonstandardUsage() const { return warnOnNonstandardUsage_; }
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bool warningsAreErrors() const { return warningsAreErrors_; }
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const evaluate::IntrinsicProcTable &intrinsics() const { return intrinsics_; }
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Scope &globalScope() { return globalScope_; }
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parser::Messages &messages() { return messages_; }
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evaluate::FoldingContext &foldingContext() { return foldingContext_; }
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SemanticsContext &set_location(const parser::CharBlock *location) {
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location_ = location;
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return *this;
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}
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SemanticsContext &set_searchDirectories(const std::vector<std::string> &x) {
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searchDirectories_ = x;
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return *this;
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}
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SemanticsContext &set_moduleDirectory(const std::string &x) {
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moduleDirectory_ = x;
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return *this;
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}
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SemanticsContext &set_warnOnNonstandardUsage(bool x) {
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warnOnNonstandardUsage_ = x;
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return *this;
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}
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SemanticsContext &set_warningsAreErrors(bool x) {
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warningsAreErrors_ = x;
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return *this;
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}
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const DeclTypeSpec &MakeNumericType(TypeCategory, int kind = 0);
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const DeclTypeSpec &MakeLogicalType(int kind = 0);
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bool AnyFatalError() const;
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// Test or set the Error flag on a Symbol
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bool HasError(const Symbol &);
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bool HasError(const Symbol *);
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bool HasError(const parser::Name &);
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void SetError(Symbol &, bool = true);
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template<typename... A>
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common::IfNoLvalue<parser::Message &, A...> Say(
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parser::CharBlock at, A &&... args) {
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return messages_.Say(at, std::move(args)...);
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}
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template<typename... A>
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common::IfNoLvalue<parser::Message &, A...> Say(A &&... args) {
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CHECK(location_);
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return messages_.Say(*location_, std::move(args)...);
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}
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parser::Message &Say(parser::Message &&msg) {
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return messages_.Say(std::move(msg));
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}
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const Scope &FindScope(parser::CharBlock) const;
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Scope &FindScope(parser::CharBlock);
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private:
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const common::IntrinsicTypeDefaultKinds &defaultKinds_;
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const parser::LanguageFeatureControl &languageFeatures_;
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const parser::CharBlock *location_{nullptr};
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std::vector<std::string> searchDirectories_;
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std::string moduleDirectory_{"."s};
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bool warnOnNonstandardUsage_{false};
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bool warningsAreErrors_{false};
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const evaluate::IntrinsicProcTable intrinsics_;
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Scope globalScope_;
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parser::Messages messages_;
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evaluate::FoldingContext foldingContext_;
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bool CheckError(bool);
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};
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class Semantics {
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public:
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explicit Semantics(SemanticsContext &context, parser::Program &program,
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parser::CookedSource &cooked)
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: context_{context}, program_{program}, cooked_{cooked} {
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context.globalScope().AddSourceRange(parser::CharBlock{cooked.data()});
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}
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SemanticsContext &context() const { return context_; }
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bool Perform();
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const Scope &FindScope(const parser::CharBlock &where) const {
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return context_.FindScope(where);
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}
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bool AnyFatalError() const { return context_.AnyFatalError(); }
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void EmitMessages(std::ostream &) const;
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void DumpSymbols(std::ostream &);
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private:
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SemanticsContext &context_;
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parser::Program &program_;
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const parser::CookedSource &cooked_;
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};
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// Base class for semantics checkers.
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struct BaseChecker {
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template<typename N> void Enter(const N &) {}
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template<typename N> void Leave(const N &) {}
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};
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}
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#endif
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