78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
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// 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_NODE_H_
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#define SRC_AST_NODE_H_
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#include <ostream>
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#include <string>
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#include "src/source.h"
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namespace tint {
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namespace ast {
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/// AST base class node
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class Node {
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public:
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virtual ~Node();
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/// @returns the node source data
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const Source& source() const { return source_; }
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/// Sets the source data
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/// @param source the source data
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void set_source(const Source& source) { source_ = source; }
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/// @returns the line the node was declared on
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size_t line() const { return source_.line; }
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/// @returns the column the node was declared on
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size_t column() const { return source_.column; }
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/// @returns true if the node is valid
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virtual bool IsValid() const = 0;
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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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virtual void to_str(std::ostream& out, size_t indent) const = 0;
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/// Convenience wrapper around the |to_str| method.
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/// @returns the node as a string
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std::string str() const;
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protected:
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/// Create a new node
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Node();
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/// Create a new node
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/// @param source The input source for the node
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explicit Node(const Source& source);
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/// Move constructor
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Node(Node&&) = default;
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/// Writes indent into stream
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/// @param out the stream to write to
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/// @param indent the number of spaces to write
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void make_indent(std::ostream& out, size_t indent) const;
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private:
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Node(const Node&) = delete;
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Source source_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_NODE_H_
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