18cee3e8e6
For source files (C++, Fortran, CMake) add copyright and license. For documentation files add just copyright. Original-commit: flang-compiler/f18@38381aed83 Reviewed-on: https://github.com/flang-compiler/f18/pull/74
680 lines
18 KiB
C++
680 lines
18 KiB
C++
// Copyright (c) 2018, 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_PARSER_PARSE_TREE_VISITOR_H_
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#define FORTRAN_PARSER_PARSE_TREE_VISITOR_H_
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#include "parse-tree.h"
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#include <cstddef>
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#include <optional>
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#include <tuple>
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#include <utility>
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#include <variant>
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/// Parse tree visitor
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/// Call Walk(x, visitor) to visit x and, by default, each node under x.
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/// If x is non-const, the visitor member functions can modify the tree.
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///
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/// visitor.Pre(x) is called before visiting x and its children are not
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/// visited if it returns false.
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///
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/// visitor.Post(x) is called after visiting x.
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namespace Fortran {
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namespace parser {
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// Default case for visitation of non-class data members and strings
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template<typename A, typename V>
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typename std::enable_if<!std::is_class_v<A> ||
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std::is_same_v<std::string, A>>::type
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Walk(const A &x, V &visitor) {
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if (visitor.Pre(x)) {
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visitor.Post(x);
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}
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}
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template<typename A, typename M>
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typename std::enable_if<!std::is_class_v<A> ||
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std::is_same_v<std::string, A>>::type
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Walk(A &x, M &mutator) {
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if (mutator.Pre(x)) {
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const format::ControlEditDesc &, V &);
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template<typename M> void Walk(format::ControlEditDesc &, M &);
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template<typename V> void Walk(const format::DerivedTypeDataEditDesc &, V &);
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template<typename M> void Walk(format::DerivedTypeDataEditDesc &, M &);
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template<typename V> void Walk(const format::FormatItem &, V &);
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template<typename M> void Walk(format::FormatItem &, M &);
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template<typename V> void Walk(const format::FormatSpecification &, V &);
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template<typename M> void Walk(format::FormatSpecification &, M &);
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template<typename V> void Walk(const format::IntrinsicTypeDataEditDesc &, V &);
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template<typename M> void Walk(format::IntrinsicTypeDataEditDesc &, M &);
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// Traversal of needed STL template classes (optional, list, tuple, variant)
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template<typename T, typename V>
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void Walk(const std::optional<T> &x, V &visitor) {
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if (x) {
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Walk(*x, visitor);
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}
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}
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template<typename T, typename M> void Walk(std::optional<T> &x, M &mutator) {
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if (x) {
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Walk(*x, mutator);
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}
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}
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template<typename T, typename V> void Walk(const std::list<T> &x, V &visitor) {
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for (const auto &elem : x) {
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Walk(elem, visitor);
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}
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}
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template<typename T, typename M> void Walk(std::list<T> &x, M &mutator) {
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for (auto &elem : x) {
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Walk(elem, mutator);
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}
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}
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template<std::size_t I = 0, typename Func, typename T>
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void ForEachInTuple(const T &tuple, Func func) {
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if constexpr (I < std::tuple_size_v<T>) {
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func(std::get<I>(tuple));
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ForEachInTuple<I + 1>(tuple, func);
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}
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}
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template<typename V, typename... A>
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void Walk(const std::tuple<A...> &x, V &visitor) {
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if (visitor.Pre(x)) {
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ForEachInTuple(x, [&](const auto &y) { Walk(y, visitor); });
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visitor.Post(x);
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}
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}
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template<std::size_t I = 0, typename Func, typename T>
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void ForEachInTuple(T &tuple, Func func) {
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if constexpr (I < std::tuple_size_v<T>) {
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func(std::get<I>(tuple));
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ForEachInTuple<I + 1>(tuple, func);
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}
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}
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template<typename M, typename... A> void Walk(std::tuple<A...> &x, M &mutator) {
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if (mutator.Pre(x)) {
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ForEachInTuple(x, [&](auto &y) { Walk(y, mutator); });
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mutator.Post(x);
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}
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}
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template<typename V, typename... A>
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void Walk(const std::variant<A...> &x, V &visitor) {
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if (visitor.Pre(x)) {
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std::visit([&](const auto &y) { Walk(y, visitor); }, x);
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visitor.Post(x);
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}
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}
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template<typename M, typename... A>
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void Walk(std::variant<A...> &x, M &mutator) {
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if (mutator.Pre(x)) {
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std::visit([&](auto &y) { Walk(y, mutator); }, x);
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mutator.Post(x);
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}
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}
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template<typename A, typename B, typename V>
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void Walk(const std::pair<A, B> &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.first, visitor);
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Walk(x.second, visitor);
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}
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}
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template<typename A, typename B, typename M>
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void Walk(std::pair<A, B> &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.first, mutator);
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Walk(x.second, mutator);
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}
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}
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// Trait-determined traversal of empty, tuple, union, and wrapper classes.
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template<typename A, typename V>
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typename std::enable_if<EmptyTrait<A>>::type Walk(const A &x, V &visitor) {
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if (visitor.Pre(x)) {
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visitor.Post(x);
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}
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}
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template<typename A, typename M>
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typename std::enable_if<EmptyTrait<A>>::type Walk(A &x, M &mutator) {
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if (mutator.Pre(x)) {
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mutator.Post(x);
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}
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}
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template<typename A, typename V>
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typename std::enable_if<TupleTrait<A>>::type Walk(const A &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.t, visitor);
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visitor.Post(x);
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}
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}
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template<typename A, typename M>
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typename std::enable_if<TupleTrait<A>>::type Walk(A &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.t, mutator);
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mutator.Post(x);
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}
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}
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template<typename A, typename V>
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typename std::enable_if<UnionTrait<A>>::type Walk(const A &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.u, visitor);
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visitor.Post(x);
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}
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}
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template<typename A, typename M>
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typename std::enable_if<UnionTrait<A>>::type Walk(A &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.u, mutator);
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mutator.Post(x);
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}
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}
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template<typename A, typename V>
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typename std::enable_if<WrapperTrait<A>>::type Walk(const A &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.v, visitor);
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visitor.Post(x);
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}
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}
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template<typename A, typename M>
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typename std::enable_if<WrapperTrait<A>>::type Walk(A &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.v, mutator);
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mutator.Post(x);
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}
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}
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template<typename T, typename V>
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void Walk(const Indirection<T> &x, V &visitor) {
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Walk(*x, visitor);
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}
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template<typename T, typename M> void Walk(Indirection<T> &x, M &mutator) {
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Walk(*x, mutator);
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}
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// Walk a class with a single field 'thing'.
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template<typename T, typename V> void Walk(const Scalar<T> &x, V &visitor) {
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Walk(x.thing, visitor);
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}
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template<typename T, typename M> void Walk(Scalar<T> &x, M &mutator) {
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Walk(x.thing, mutator);
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}
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template<typename T, typename V> void Walk(const Constant<T> &x, V &visitor) {
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Walk(x.thing, visitor);
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}
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template<typename T, typename M> void Walk(Constant<T> &x, M &mutator) {
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Walk(x.thing, mutator);
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}
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template<typename T, typename V> void Walk(const Integer<T> &x, V &visitor) {
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Walk(x.thing, visitor);
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}
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template<typename T, typename M> void Walk(Integer<T> &x, M &mutator) {
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Walk(x.thing, mutator);
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}
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template<typename T, typename V> void Walk(const Logical<T> &x, V &visitor) {
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Walk(x.thing, visitor);
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}
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template<typename T, typename M> void Walk(Logical<T> &x, M &mutator) {
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Walk(x.thing, mutator);
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}
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template<typename T, typename V>
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void Walk(const DefaultChar<T> &x, V &visitor) {
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Walk(x.thing, visitor);
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}
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template<typename T, typename M> void Walk(DefaultChar<T> &x, M &mutator) {
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Walk(x.thing, mutator);
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}
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template<typename T, typename V> void Walk(const Statement<T> &x, V &visitor) {
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if (visitor.Pre(x)) {
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// N.B. the label is not traversed
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Walk(x.statement, visitor);
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visitor.Post(x);
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}
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}
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template<typename T, typename M> void Walk(Statement<T> &x, M &mutator) {
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if (mutator.Pre(x)) {
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// N.B. the label is not traversed
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Walk(x.statement, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const Name &x, V &visitor) {
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if (visitor.Pre(x)) {
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(Name &x, M &mutator) {
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if (mutator.Pre(x)) {
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const AcSpec &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.type, visitor);
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Walk(x.values, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(AcSpec &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.type, mutator);
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Walk(x.values, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const ArrayElement &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.base, visitor);
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Walk(x.subscripts, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(ArrayElement &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.base, mutator);
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Walk(x.subscripts, mutator);
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mutator.Post(x);
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}
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}
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template<typename V>
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void Walk(const CharSelector::LengthAndKind &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.length, visitor);
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Walk(x.kind, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(CharSelector::LengthAndKind &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.length, mutator);
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Walk(x.kind, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const CaseValueRange::Range &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.lower, visitor);
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Walk(x.upper, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(CaseValueRange::Range &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.lower, mutator);
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Walk(x.upper, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const CoindexedNamedObject &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.base, visitor);
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Walk(x.imageSelector, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(CoindexedNamedObject &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.base, mutator);
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Walk(x.imageSelector, mutator);
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mutator.Post(x);
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}
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}
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template<typename V>
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void Walk(const DeclarationTypeSpec::Class &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.derived, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(DeclarationTypeSpec::Class &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.derived, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const DeclarationTypeSpec::Type &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.derived, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(DeclarationTypeSpec::Type &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.derived, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const ImportStmt &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.names, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(ImportStmt &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.names, mutator);
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mutator.Post(x);
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}
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}
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template<typename V>
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void Walk(const IntrinsicTypeSpec::Character &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.selector, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(IntrinsicTypeSpec::Character &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.selector, mutator);
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mutator.Post(x);
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}
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}
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template<typename V>
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void Walk(const IntrinsicTypeSpec::Complex &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.kind, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(IntrinsicTypeSpec::Complex &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.kind, mutator);
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mutator.Post(x);
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}
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}
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template<typename V>
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void Walk(const IntrinsicTypeSpec::Logical &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.kind, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(IntrinsicTypeSpec::Logical &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.kind, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const IntrinsicTypeSpec::Real &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.kind, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(IntrinsicTypeSpec::Real &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.kind, mutator);
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mutator.Post(x);
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}
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}
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template<typename T, typename V> void Walk(const LoopBounds<T> &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.name, visitor);
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Walk(x.lower, visitor);
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Walk(x.upper, visitor);
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Walk(x.step, visitor);
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visitor.Post(x);
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}
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}
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template<typename T, typename M> void Walk(LoopBounds<T> &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.name, mutator);
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Walk(x.lower, mutator);
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Walk(x.upper, mutator);
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Walk(x.step, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const PartRef &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.name, visitor);
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Walk(x.subscripts, visitor);
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Walk(x.imageSelector, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(PartRef &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.name, mutator);
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Walk(x.subscripts, mutator);
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Walk(x.imageSelector, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const ReadStmt &x, V &visitor) {
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if (visitor.Pre(x)) {
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Walk(x.iounit, visitor);
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Walk(x.format, visitor);
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Walk(x.controls, visitor);
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Walk(x.items, visitor);
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visitor.Post(x);
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}
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}
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template<typename M> void Walk(ReadStmt &x, M &mutator) {
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if (mutator.Pre(x)) {
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Walk(x.iounit, mutator);
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Walk(x.format, mutator);
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Walk(x.controls, mutator);
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Walk(x.items, mutator);
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mutator.Post(x);
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}
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}
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template<typename V> void Walk(const RealLiteralConstant &x, V &visitor) {
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if (visitor.Pre(x)) {
|
|
Walk(x.real, visitor);
|
|
Walk(x.kind, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(RealLiteralConstant &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.real, mutator);
|
|
Walk(x.kind, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const RealLiteralConstant::Real &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(RealLiteralConstant::Real &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const StructureComponent &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.base, visitor);
|
|
Walk(x.component, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(StructureComponent &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.base, mutator);
|
|
Walk(x.component, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const Suffix &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.binding, visitor);
|
|
Walk(x.resultName, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(Suffix &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.binding, mutator);
|
|
Walk(x.resultName, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V>
|
|
void Walk(const TypeBoundProcedureStmt::WithInterface &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.interfaceName, visitor);
|
|
Walk(x.attributes, visitor);
|
|
Walk(x.bindingNames, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M>
|
|
void Walk(TypeBoundProcedureStmt::WithInterface &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.interfaceName, mutator);
|
|
Walk(x.attributes, mutator);
|
|
Walk(x.bindingNames, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V>
|
|
void Walk(const TypeBoundProcedureStmt::WithoutInterface &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.attributes, visitor);
|
|
Walk(x.declarations, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M>
|
|
void Walk(TypeBoundProcedureStmt::WithoutInterface &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.attributes, mutator);
|
|
Walk(x.declarations, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const UseStmt &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.nature, visitor);
|
|
Walk(x.moduleName, visitor);
|
|
Walk(x.u, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(UseStmt &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.nature, mutator);
|
|
Walk(x.moduleName, mutator);
|
|
Walk(x.u, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const WriteStmt &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.iounit, visitor);
|
|
Walk(x.format, visitor);
|
|
Walk(x.controls, visitor);
|
|
Walk(x.items, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(WriteStmt &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.iounit, mutator);
|
|
Walk(x.format, mutator);
|
|
Walk(x.controls, mutator);
|
|
Walk(x.items, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const format::ControlEditDesc &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.kind, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(format::ControlEditDesc &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.kind, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V>
|
|
void Walk(const format::DerivedTypeDataEditDesc &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.type, visitor);
|
|
Walk(x.parameters, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(format::DerivedTypeDataEditDesc &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.type, mutator);
|
|
Walk(x.parameters, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V> void Walk(const format::FormatItem &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.repeatCount, visitor);
|
|
Walk(x.u, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(format::FormatItem &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.repeatCount, mutator);
|
|
Walk(x.u, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V>
|
|
void Walk(const format::FormatSpecification &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.items, visitor);
|
|
Walk(x.unlimitedItems, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M> void Walk(format::FormatSpecification &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.items, mutator);
|
|
Walk(x.unlimitedItems, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
template<typename V>
|
|
void Walk(const format::IntrinsicTypeDataEditDesc &x, V &visitor) {
|
|
if (visitor.Pre(x)) {
|
|
Walk(x.kind, visitor);
|
|
Walk(x.width, visitor);
|
|
Walk(x.digits, visitor);
|
|
Walk(x.exponentWidth, visitor);
|
|
visitor.Post(x);
|
|
}
|
|
}
|
|
template<typename M>
|
|
void Walk(format::IntrinsicTypeDataEditDesc &x, M &mutator) {
|
|
if (mutator.Pre(x)) {
|
|
Walk(x.kind, mutator);
|
|
Walk(x.width, mutator);
|
|
Walk(x.digits, mutator);
|
|
Walk(x.exponentWidth, mutator);
|
|
mutator.Post(x);
|
|
}
|
|
}
|
|
|
|
} // namespace parser
|
|
} // namespace Fortran
|
|
#endif // FORTRAN_PARSER_PARSE_TREE_VISITOR_H_
|