102 lines
3.0 KiB
C++
102 lines
3.0 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_IMPORT_H_
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#define SRC_AST_IMPORT_H_
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#include <memory>
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#include <ostream>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "src/ast/node.h"
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namespace tint {
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namespace ast {
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/// An import statement.
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class Import : public Node {
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public:
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/// Create a new empty import statement
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Import();
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/// Create a new import statement
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/// @param path The import path e.g. GLSL.std.450
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/// @param name The import reference name e.g. std
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Import(const std::string& path, const std::string& name);
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/// Create a new import statement
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/// @param source The input source for the import statement
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/// @param path The import path e.g. GLSL.std.430
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/// @param name The import reference name e.g. std
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Import(const Source& source,
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const std::string& path,
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const std::string& name);
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/// Move constructor
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Import(Import&&);
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~Import() override;
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/// Sets the import path
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/// @param path the path to set
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void set_path(const std::string& path) { path_ = path; }
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/// @returns the import path
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const std::string& path() const { return path_; }
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/// Sets the import name
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/// @param name the name to set
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void set_name(const std::string& name) { name_ = name; }
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/// @returns the import name
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const std::string& name() const { return name_; }
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/// Add the given |name| to map to the given |id|
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/// @param name the name to map
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/// @param id the id to map too
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void AddMethodId(const std::string& name, uint32_t id) {
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method_to_id_map_[name] = id;
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}
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/// Retrieves the id for a given name
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/// @param name the name to lookup
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/// @returns the id for the given name or 0 on failure
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uint32_t GetIdForMethod(const std::string& name) const {
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auto val = method_to_id_map_.find(name);
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if (val == method_to_id_map_.end()) {
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return 0;
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}
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return val->second;
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}
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/// @returns true if the name and path are both present
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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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Import(const Import&) = delete;
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std::string path_;
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std::string name_;
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std::unordered_map<std::string, uint32_t> method_to_id_map_;
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};
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/// A list of unique imports
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using ImportList = std::vector<std::unique_ptr<Import>>;
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_IMPORT_H_
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