mirror of
https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
551a6d385e
This handles toolchain failures per-file. The intent is to allow placing both "success" and "fail" tests in the same file, using splits. However, this PR only adds support and updates existing tests to continue passing.
73 lines
2.5 KiB
C++
73 lines
2.5 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_H_
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#define CARBON_TOOLCHAIN_DRIVER_DRIVER_H_
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#include "common/command_line.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/VirtualFileSystem.h"
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#include "llvm/Support/raw_ostream.h"
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namespace Carbon {
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// Command line interface driver.
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//
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// Provides simple API to parse and run command lines for Carbon. It is
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// generally expected to be used to implement command line tools for working
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// with the language.
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class Driver {
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public:
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// The result of RunCommand().
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struct RunResult {
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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<llvm::StringRef, bool>> per_file_success;
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};
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// Constructs a driver with any error or informational output directed to a
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// specified stream.
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Driver(llvm::vfs::FileSystem& fs, llvm::raw_pwrite_stream& output_stream,
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llvm::raw_pwrite_stream& error_stream)
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: fs_(fs), output_stream_(output_stream), error_stream_(error_stream) {}
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// Parses the given arguments into both a subcommand to select the operation
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// to perform and any arguments to that subcommand.
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//
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// Returns true if the operation succeeds. If the operation fails, returns
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// false and any information about the failure is printed to the registered
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// error stream (stderr by default).
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auto RunCommand(llvm::ArrayRef<llvm::StringRef> args) -> RunResult;
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private:
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struct Options;
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struct CompileOptions;
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class CompilationUnit;
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// Delegates to the command line library to parse the arguments and store the
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// results in a custom `Options` structure that the rest of the driver uses.
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auto ParseArgs(llvm::ArrayRef<llvm::StringRef> args, Options& options)
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-> CommandLine::ParseResult;
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// Does custom validation of the compile-subcommand options structure beyond
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// what the command line parsing library supports.
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auto ValidateCompileOptions(const CompileOptions& options) const -> bool;
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// Implements the compile subcommand of the driver.
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auto Compile(const CompileOptions& options) -> RunResult;
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llvm::vfs::FileSystem& fs_;
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llvm::raw_pwrite_stream& output_stream_;
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llvm::raw_pwrite_stream& error_stream_;
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llvm::raw_pwrite_stream* vlog_stream_ = nullptr;
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};
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} // namespace Carbon
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#endif // CARBON_TOOLCHAIN_DRIVER_DRIVER_H_
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