ee28b70827
Create `AssocEntityDetails` for symbols that represent entities identified by the associate-name in ASSOCIATE and SELECT TYPE constructs. For ASSOCIATE, create a new scope for the associated entity. For SELECT TYPE, create a new scope for each of type guard blocks. Each one contains an associated entity with the appropriate type. For SELECT TYPE, also create a place-holder symbol for the associate-name in the SELECT TYPE statement. The real symbols are in the new scopes and none of them is uniquely identified with the associate-name. Handling of `Selector` is common between these, with `associate-name => expr | variable` recorded in `ConstructVisitor::association_`. When the selector is an expression, derive the type of the associated entity from the type of the expression. This required some refactoring of how `DeclTypeSpec`s are created. The `DerivedTypeSpec` that comes from and expression is const so we can only create const `DeclTypeSpec`s from it. But there were times during name resolution when we needed to set type parameters in the current `DeclTypeSpec`. Now the non-const `DerivedTypeSpec` is saved separately from the const `DeclTypeSpec` while we are processing a declaration type spec. This makes it unnecessary to save the derived type name. Add a type alias for `common::Indirection` to reduce verbosity. Original-commit: flang-compiler/f18@b7668cebe4 Reviewed-on: https://github.com/flang-compiler/f18/pull/261 Tree-same-pre-rewrite: false
112 lines
3.4 KiB
C++
112 lines
3.4 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/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::parser {
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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 IntrinsicTypeDefaultKinds;
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class SemanticsContext {
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public:
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SemanticsContext(const IntrinsicTypeDefaultKinds &);
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const IntrinsicTypeDefaultKinds &defaultKinds() const {
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return defaultKinds_;
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}
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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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const bool warningsAreErrors() const { return warningsAreErrors_; }
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const bool debugExpressions() const { return debugExpressions_; }
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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_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_warningsAreErrors(bool x) {
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warningsAreErrors_ = x;
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return *this;
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}
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SemanticsContext &set_debugExpressions(bool x) {
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debugExpressions_ = 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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template<typename... A> parser::Message &Say(A... args) {
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return messages_.Say(std::forward<A>(args)...);
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}
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private:
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const IntrinsicTypeDefaultKinds &defaultKinds_;
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std::vector<std::string> searchDirectories_;
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std::string moduleDirectory_{"."s};
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bool warningsAreErrors_{false};
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bool debugExpressions_{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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};
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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 &) const;
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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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}
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#endif
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