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https://github.com/carbon-language/carbon-lang.git
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Chandler Carruth
046fbbcb29
The old function name caused some confusion during the review of #5338, sending this to see if it provides a less surprising function name and boolean result. Happy to try other names / approaches as well.
74 lines
2.6 KiB
C++
74 lines
2.6 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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#include "toolchain/driver/llvm_subcommand.h"
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#include "common/command_line.h"
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#include "llvm/TargetParser/Host.h"
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#include "llvm/TargetParser/Triple.h"
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#include "toolchain/base/llvm_tools.h"
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#include "toolchain/driver/llvm_runner.h"
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namespace Carbon {
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static constexpr CommandLine::CommandInfo SubcommandInfo = {
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.name = "llvm",
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.help = R"""(
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Runs LLVM's command line tools with the provided arguments.
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This subcommand provides access to a collection of LLVM's command line tools via
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further subcommands. For each of these tools, their command line can be provided
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using positional arguments.
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)""",
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};
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auto LLVMOptions::Build(CommandLine::CommandBuilder& b,
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DriverSubcommand* subcommand,
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DriverSubcommand** selected_subcommand) -> void {
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// Add further subcommands for each LLVM tool.
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for (LLVMTool tool : LLVMTool::Tools) {
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// TODO: The subcommand info for each tool is weirdly stored in the
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// `LLVMTool` class instead of here where it makes more logical sense.
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// Either we should figure out how to move it to here or we should more
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// fully document the oddity of having it in the `LLVMTool` class.
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//
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// TODO: Currently, the command line subsystem's help isn't as user friendly
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// for the generated subcommands below this as it could be. Because each of
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// these has a completely generic and stamped out info, the `help` output is
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// very repetitive and doesn't actually contribute much information.
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b.AddSubcommand(tool.subcommand_info(), [&](auto& sub_b) {
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sub_b.AddStringPositionalArg(
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{
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.name = "ARG",
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.help = R"""(
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Arguments passed to the LLVM tool.
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)""",
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},
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[&](auto& arg_b) { arg_b.Append(&args); });
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sub_b.Do([=, this] {
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subcommand_tool = tool;
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*selected_subcommand = subcommand;
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});
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});
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}
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// The `llvm` subcommand can't be used directly.
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b.RequiresSubcommand();
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}
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LLVMSubcommand::LLVMSubcommand() : DriverSubcommand(SubcommandInfo) {}
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auto LLVMSubcommand::Run(DriverEnv& driver_env) -> DriverResult {
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LLVMRunner runner(driver_env.installation, driver_env.vlog_stream);
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// Don't run arbitrary LLVM tools and libraries when fuzzing.
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if (TestAndDiagnoseIfFuzzingExternalLibraries(driver_env, "llvm")) {
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return {.success = false};
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}
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return {.success = runner.Run(options_.subcommand_tool, options_.args)};
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}
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} // namespace Carbon
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