84 lines
2.7 KiB
C++
84 lines
2.7 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_AST_IDENTIFIER_EXPRESSION_H_
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#define SRC_AST_IDENTIFIER_EXPRESSION_H_
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#include <string>
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#include <utility>
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#include <vector>
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#include "src/ast/expression.h"
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namespace tint {
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namespace ast {
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/// An identifier expression
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class IdentifierExpression : public Expression {
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public:
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/// Constructor
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/// @param name the name
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explicit IdentifierExpression(const std::string& name);
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/// Constructor
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/// @param source the source
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/// @param name the name
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IdentifierExpression(const Source& source, const std::string& name);
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/// Constructor
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/// @param segments the name segments
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explicit IdentifierExpression(std::vector<std::string> segments);
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/// Constructor
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/// @param source the identifier expression source
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/// @param segments the name segments
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IdentifierExpression(const Source& source, std::vector<std::string> segments);
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/// Move constructor
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IdentifierExpression(IdentifierExpression&&);
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~IdentifierExpression() override;
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/// Sets the name segments
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/// @param segments the name segments
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void set_segments(std::vector<std::string> segments) {
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segments_ = std::move(segments);
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}
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/// @returns the name
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std::vector<std::string> segments() const { return segments_; }
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/// @returns true if this identifier has a path component
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bool has_path() const { return segments_.size() > 1; }
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/// @returns the path part of the identifier or blank if no path
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std::string path() const;
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/// @returns the name part of the identifier
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std::string name() const { return segments_.back(); }
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/// @returns true if this is an identifier expression
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bool IsIdentifier() const override;
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/// @returns true if the node is valid
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bool IsValid() const override;
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/// Writes a representation of the node to the output stream
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/// @param out the stream to write to
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/// @param indent number of spaces to indent the node when writing
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void to_str(std::ostream& out, size_t indent) const override;
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private:
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IdentifierExpression(const IdentifierExpression&) = delete;
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std::vector<std::string> segments_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_IDENTIFIER_EXPRESSION_H_
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