109 lines
3.4 KiB
C++
109 lines
3.4 KiB
C++
// Copyright 2020 The Tint Authors.
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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 SRC_DIAGNOSTIC_DIAGNOSTIC_H_
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#define SRC_DIAGNOSTIC_DIAGNOSTIC_H_
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#include <initializer_list>
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#include <string>
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#include <utility>
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#include <vector>
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#include "src/source.h"
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namespace tint {
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namespace diag {
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/// Severity is an enumerator of diagnostic severities.
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enum class Severity { Info, Warning, Error, Fatal };
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/// @return true iff |a| is more than, or of equal severity to |b|.
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inline bool operator>=(Severity a, Severity b) {
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return static_cast<int>(a) >= static_cast<int>(b);
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}
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/// Diagnostic holds all the information for a single compiler diagnostic
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/// message.
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class Diagnostic {
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public:
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/// severity is the severity of the diagnostic message.
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Severity severity = Severity::Error;
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/// source is the location of the diagnostic.
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Source source;
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/// message is the text associated with the diagnostic.
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std::string message;
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};
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/// List is a container of Diagnostic messages.
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class List {
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public:
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/// iterator is the type used for range based iteration.
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using iterator = std::vector<Diagnostic>::const_iterator;
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/// Constructs the list with no elements.
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List();
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/// Copy constructor. Copies the diagnostics from |list| into this list.
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/// @param list the list of diagnostics to copy into this list.
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List(std::initializer_list<Diagnostic> list);
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/// Copy constructor. Copies the diagnostics from |list| into this list.
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/// @param list the list of diagnostics to copy into this list.
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List(const List& list);
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/// Move constructor. Moves the diagnostics from |list| into this list.
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/// @param list the list of diagnostics to move into this list.
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List(List&& list);
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~List();
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/// Assignment operator. Copies the diagnostics from |list| into this list.
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/// @param list the list to copy into this list.
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/// @return this list.
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List& operator=(const List& list);
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/// Assignment move operator. Moves the diagnostics from |list| into this
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/// list.
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/// @param list the list to move into this list.
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/// @return this list.
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List& operator=(List&& list);
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/// adds a diagnostic to the end of this list.
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/// @param diag the diagnostic to append to this list.
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void add(Diagnostic&& diag) {
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entries_.emplace_back(std::move(diag));
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if (diag.severity >= Severity::Error) {
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contains_errors_ = true;
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}
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}
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/// @returns true iff the diagnostic list contains errors diagnostics (or of
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/// higher severity).
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bool contains_errors() const { return contains_errors_; }
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/// @returns the number of entries in the list.
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size_t count() const { return entries_.size(); }
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/// @returns the first diagnostic in the list.
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iterator begin() const { return entries_.begin(); }
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/// @returns the last diagnostic in the list.
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iterator end() const { return entries_.end(); }
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private:
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std::vector<Diagnostic> entries_;
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bool contains_errors_ = false;
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};
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} // namespace diag
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} // namespace tint
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#endif // SRC_DIAGNOSTIC_DIAGNOSTIC_H_
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