dawn-cmake/src/ast/import.h

102 lines
3.0 KiB
C++

// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_AST_IMPORT_H_
#define SRC_AST_IMPORT_H_
#include <memory>
#include <ostream>
#include <string>
#include <unordered_map>
#include <vector>
#include "src/ast/node.h"
namespace tint {
namespace ast {
/// An import statement.
class Import : public Node {
public:
/// Create a new empty import statement
Import();
/// Create a new import statement
/// @param path The import path e.g. GLSL.std.450
/// @param name The import reference name e.g. std
Import(const std::string& path, const std::string& name);
/// Create a new import statement
/// @param source The input source for the import statement
/// @param path The import path e.g. GLSL.std.430
/// @param name The import reference name e.g. std
Import(const Source& source,
const std::string& path,
const std::string& name);
/// Move constructor
Import(Import&&);
~Import() override;
/// Sets the import path
/// @param path the path to set
void set_path(const std::string& path) { path_ = path; }
/// @returns the import path
const std::string& path() const { return path_; }
/// Sets the import name
/// @param name the name to set
void set_name(const std::string& name) { name_ = name; }
/// @returns the import name
const std::string& name() const { return name_; }
/// Add the given |name| to map to the given |id|
/// @param name the name to map
/// @param id the id to map too
void AddMethodId(const std::string& name, uint32_t id) {
method_to_id_map_[name] = id;
}
/// Retrieves the id for a given name
/// @param name the name to lookup
/// @returns the id for the given name or 0 on failure
uint32_t GetIdForMethod(const std::string& name) const {
auto val = method_to_id_map_.find(name);
if (val == method_to_id_map_.end()) {
return 0;
}
return val->second;
}
/// @returns true if the name and path are both present
bool IsValid() const override;
/// Writes a representation of the node to the output stream
/// @param out the stream to write to
/// @param indent number of spaces to indent the node when writing
void to_str(std::ostream& out, size_t indent) const override;
private:
Import(const Import&) = delete;
std::string path_;
std::string name_;
std::unordered_map<std::string, uint32_t> method_to_id_map_;
};
/// A list of unique imports
using ImportList = std::vector<std::unique_ptr<Import>>;
} // namespace ast
} // namespace tint
#endif // SRC_AST_IMPORT_H_