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56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#ifndef CARBON_TOOLCHAIN_DRIVER_DRIVER_SUBCOMMAND_H_
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#define CARBON_TOOLCHAIN_DRIVER_DRIVER_SUBCOMMAND_H_
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#include "common/command_line.h"
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#include "common/ostream.h"
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#include "llvm/Support/VirtualFileSystem.h"
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#include "toolchain/driver/driver_env.h"
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#include "toolchain/install/install_paths.h"
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namespace Carbon {
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// The result of a driver run.
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struct DriverResult {
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// Overall success result.
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bool success;
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// Per-file success results. May be empty if files aren't individually
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// processed.
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llvm::SmallVector<std::pair<std::string, bool>> per_file_success;
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};
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// A subcommand for the driver.
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class DriverSubcommand {
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public:
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explicit DriverSubcommand(CommandLine::CommandInfo info) : info_(info) {}
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// Adds the subcommand to the main command, assigning `selected_command` when
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// the subcommand is in use.
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auto AddTo(CommandLine::CommandBuilder& b,
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DriverSubcommand** selected_subcommand) -> void {
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b.AddSubcommand(info_, [this, selected_subcommand](
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CommandLine::CommandBuilder& sub_b) {
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BuildOptions(sub_b);
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sub_b.Do([this, selected_subcommand] { *selected_subcommand = this; });
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});
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}
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// Adds command line options.
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virtual auto BuildOptions(CommandLine::CommandBuilder& b) -> void = 0;
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// Runs the command.
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virtual auto Run(DriverEnv& driver_env) -> DriverResult = 0;
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private:
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// Subcommand information.
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CommandLine::CommandInfo info_;
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};
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} // namespace Carbon
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#endif // CARBON_TOOLCHAIN_DRIVER_DRIVER_SUBCOMMAND_H_
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