mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jon Ross-Perkins
9e03d5efe2
This shifts explorer's file_test to use ExplorerMain in order to be able to pass arguments similar to how the command line would. It also means that various output wrapping done by the command line is shared, no longer copied by file_test. In order to help make this work, I plugged vfs::FileSystem into explorer, similar to how we're doing this on the toolchain side (might try to share more code later). I was having trouble getting an overlay working, I think due to how paths are specified -- but due to the issues in fixing this, I'm just loading the prelude into the InMemoryFilesystem for now. Under this approach, I'm unifying more of the file versus string handling. I think we should shift towards an approach where, like toolchain code, anyone trying to use Explorer should use a vfs implementation to supply code. This should reduce the number of distinct code paths which we're maintaining/testing. Short-term, this allows the trace testdata to be merged into file_test with less special casing, using ARGS:. Long-term, it means that the file_test knows the ARGS to pass to generate checks to match against, which is the direction I'm planning for autoupdate.
90 lines
3.3 KiB
C++
90 lines
3.3 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 "explorer/parse_and_execute/parse_and_execute.h"
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#include <locale>
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#include "common/error.h"
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#include "explorer/common/trace_stream.h"
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#include "explorer/interpreter/exec_program.h"
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#include "explorer/interpreter/stack_space.h"
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#include "explorer/syntax/parse.h"
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#include "explorer/syntax/prelude.h"
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#include "llvm/ADT/ScopeExit.h"
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namespace Carbon {
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// Returns a scope exit function for printing the timing of a step on scope
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// exit. Note the use prints step timings in reverse order.
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static auto PrintTimingOnExit(TraceStream* trace_stream, const char* label,
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std::chrono::steady_clock::time_point* cursor) {
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auto end = std::chrono::steady_clock::now();
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auto duration = end - *cursor;
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*cursor = end;
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auto exit_scope_function = llvm::make_scope_exit([=]() {
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SetProgramPhase set_program_phase(*trace_stream, ProgramPhase::Timing);
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if (trace_stream->is_enabled()) {
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*trace_stream << "Time elapsed in " << label << ": "
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<< std::chrono::duration_cast<std::chrono::milliseconds>(
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duration)
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.count()
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<< "ms\n";
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}
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});
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return exit_scope_function;
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}
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auto ParseAndExecute(llvm::vfs::FileSystem& fs, std::string_view prelude_path,
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std::string_view input_file_name, bool parser_debug,
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Nonnull<TraceStream*> trace_stream,
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Nonnull<llvm::raw_ostream*> print_stream) -> ErrorOr<int> {
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return RunWithExtraStack([&]() -> ErrorOr<int> {
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Arena arena;
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auto cursor = std::chrono::steady_clock::now();
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ErrorOr<AST> parse_result =
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Parse(fs, &arena, input_file_name, FileKind::Main, parser_debug);
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auto print_parse_time = PrintTimingOnExit(trace_stream, "Parse", &cursor);
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if (!parse_result.ok()) {
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return ErrorBuilder() << "SYNTAX ERROR: " << parse_result.error();
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}
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AddPrelude(fs, prelude_path, &arena, &parse_result->declarations,
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&parse_result->num_prelude_declarations);
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auto print_prelude_time =
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PrintTimingOnExit(trace_stream, "AddPrelude", &cursor);
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// Semantically analyze the parsed program.
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ErrorOr<AST> analyze_result =
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AnalyzeProgram(&arena, *parse_result, trace_stream, print_stream);
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auto print_analyze_time =
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PrintTimingOnExit(trace_stream, "AnalyzeProgram", &cursor);
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if (!analyze_result.ok()) {
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return ErrorBuilder() << "COMPILATION ERROR: " << analyze_result.error();
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}
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// Run the program.
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ErrorOr<int> exec_result =
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ExecProgram(&arena, *analyze_result, trace_stream, print_stream);
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auto print_exec_time =
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PrintTimingOnExit(trace_stream, "ExecProgram", &cursor);
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if (!exec_result.ok()) {
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return ErrorBuilder() << "RUNTIME ERROR: " << exec_result.error();
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}
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auto print_trace_timing_heading = llvm::make_scope_exit([=]() {
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SetProgramPhase set_prog_phase(*trace_stream, ProgramPhase::Timing);
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if (trace_stream->is_enabled()) {
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*trace_stream << "********** printing timing **********\n";
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}
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});
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return exec_result;
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});
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}
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} // namespace Carbon
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