mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jon Ross-Perkins
c43839e1b1
In explorer, we already support parsing a string_view, so use that. In toolchain, we need to build support, probably using vfs, so that's a todo. bazel test //explorer:file_test --runs_per_test=5 - branch: Stats over 250 runs: max = 18.3s, min = 5.2s, avg = 11.2s, dev = 2.9s - trunk: Stats over 250 runs: max = 22.3s, min = 5.9s, avg = 12.1s, dev = 2.8s Not a dramatic improvement, but maybe more effective long-term, and this'd been requested on #2876
116 lines
4.4 KiB
C++
116 lines
4.4 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/check.h"
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#include "common/error.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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trace_stream->set_current_phase(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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trace_stream->set_current_phase(ProgramPhase::Unknown);
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}
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});
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return exit_scope_function;
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}
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static auto ParseAndExecuteHelper(std::function<ErrorOr<AST>(Arena*)> parse,
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std::string_view prelude_path,
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Nonnull<TraceStream*> trace_stream,
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Nonnull<llvm::raw_ostream*> print_stream)
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-> 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 = parse(&arena);
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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(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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trace_stream->set_current_phase(ProgramPhase::Execution);
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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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trace_stream->set_current_phase(ProgramPhase::Unknown);
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auto print_trace_timing_heading = llvm::make_scope_exit([=]() {
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trace_stream->set_current_phase(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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trace_stream->set_current_phase(ProgramPhase::Unknown);
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});
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return exec_result;
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});
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}
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auto ParseAndExecuteFile(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)
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-> ErrorOr<int> {
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auto parse = [&](Arena* arena) {
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return Parse(arena, input_file_name, parser_debug);
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};
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return ParseAndExecuteHelper(parse, prelude_path, trace_stream, print_stream);
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}
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auto ParseAndExecute(std::string_view prelude_path,
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std::string_view input_file_name,
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std::string_view file_contents, 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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auto parse = [&](Arena* arena) {
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return ParseFromString(arena, input_file_name, file_contents, parser_debug);
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};
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return ParseAndExecuteHelper(parse, prelude_path, trace_stream, print_stream);
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}
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} // namespace Carbon
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