Alexander Markov
6ed2ebf6b0
Issue: https://github.com/dart-lang/sdk/issues/30480 Change-Id: Iea1480ce2f20b6cb08b4eb57eef5ca14a002e6e0 Reviewed-on: https://dart-review.googlesource.com/40400 Commit-Queue: Alexander Markov <alexmarkov@google.com> Reviewed-by: Vyacheslav Egorov <vegorov@google.com>
84 lines
2.9 KiB
Dart
84 lines
2.9 KiB
Dart
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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/// Defines the VM-specific translation of Dart source code to kernel binaries.
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library vm.kernel_front_end;
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import 'dart:async';
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import 'package:front_end/src/api_prototype/compiler_options.dart'
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show CompilerOptions, ErrorHandler;
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import 'package:front_end/src/api_prototype/kernel_generator.dart'
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show kernelForProgram;
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import 'package:front_end/src/api_prototype/compilation_message.dart'
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show CompilationMessage, Severity;
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import 'package:front_end/src/fasta/severity.dart' show Severity;
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import 'package:kernel/ast.dart' show Program;
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import 'package:kernel/core_types.dart' show CoreTypes;
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import 'transformations/devirtualization.dart' as devirtualization
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show transformProgram;
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import 'transformations/no_dynamic_invocations_annotator.dart'
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as no_dynamic_invocations_annotator show transformProgram;
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import 'transformations/type_flow/transformer.dart' as globalTypeFlow
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show transformProgram;
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// Flag to enable global type flow analysis and related transformations.
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const kUseGlobalTypeFlow = const bool.fromEnvironment('use.global.type.flow');
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/// Generates a kernel representation of the program whose main library is in
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/// the given [source]. Intended for whole program (non-modular) compilation.
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///
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/// VM-specific replacement of [kernelForProgram].
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///
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Future<Program> compileToKernel(Uri source, CompilerOptions options,
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{bool aot: false}) async {
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// Replace error handler to detect if there are compilation errors.
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final errorDetector =
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new ErrorDetector(previousErrorHandler: options.onError);
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options.onError = errorDetector;
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final program = await kernelForProgram(source, options);
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// Restore error handler (in case 'options' are reused).
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options.onError = errorDetector.previousErrorHandler;
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// Run global transformations only if program is correct.
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if (aot && (program != null) && !errorDetector.hasCompilationErrors) {
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_runGlobalTransformations(program, options.strongMode);
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}
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return program;
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}
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_runGlobalTransformations(Program program, bool strongMode) {
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if (strongMode) {
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final coreTypes = new CoreTypes(program);
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if (kUseGlobalTypeFlow) {
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globalTypeFlow.transformProgram(coreTypes, program);
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} else {
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devirtualization.transformProgram(coreTypes, program);
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}
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no_dynamic_invocations_annotator.transformProgram(program);
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}
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}
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class ErrorDetector {
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final ErrorHandler previousErrorHandler;
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bool hasCompilationErrors = false;
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ErrorDetector({this.previousErrorHandler});
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void call(CompilationMessage message) {
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if ((message.severity != Severity.nit) &&
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(message.severity != Severity.warning)) {
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hasCompilationErrors = true;
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}
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previousErrorHandler?.call(message);
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}
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}
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