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Tweak and document compile-time constant for enabling Fasta's incremental compiler

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Change-Id: Icb45e579233f567319439623d67d2a683fb13514
Reviewed-on: https://dart-review.googlesource.com/30447
Reviewed-by: Jens Johansen <jensj@google.com>
Commit-Queue: Peter von der Ahé <ahe@google.com>
This commit is contained in:
Peter von der Ahé 2017-12-19 15:23:43 +00:00 committed by commit-bot@chromium.org
parent 32c4480403
commit 0fb21eec2f
1 changed files with 12 additions and 3 deletions
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15
pkg/front_end/lib/src/api_prototype/incremental_kernel_generator.dart
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@ -15,6 +15,14 @@ import 'package:front_end/src/fasta/incremental_compiler.dart'
import 'compiler_options.dart';
/// Force using the Fasta incremental compiler [IncrementalCompiler]. This is
/// useful for uploading patches to golem (benchmark service).
const bool _forceFasta = false;
/// When true, use the Fasta incremental compiler [IncrementalCompiler].
const bool _useFasta =
const bool.fromEnvironment("ikg-use-fasta", defaultValue: _forceFasta);
/// The type of the function that clients can pass to track used files.
///
/// When a file is first used during compilation, this function is called with
@ -143,13 +151,14 @@ abstract class IncrementalKernelGenerator {
CompilerOptions options, Uri entryPoint,
{WatchUsedFilesFn watch, bool useMinimalGenerator: false}) async {
var processedOptions = new ProcessedOptions(options, false, [entryPoint]);
if (_useFasta) {
return new IncrementalCompiler(new CompilerContext(processedOptions));
}
return await CompilerContext.runWithOptions(processedOptions,
(compilerContext) async {
var uriTranslator = await processedOptions.getUriTranslator();
var sdkOutlineBytes = await processedOptions.loadSdkSummaryBytes();
if (const String.fromEnvironment("ikg-variant") == "fasta") {
return new IncrementalCompiler(compilerContext);
} else if (useMinimalGenerator) {
if (useMinimalGenerator) {
return new MinimalIncrementalKernelGenerator(
processedOptions, uriTranslator, sdkOutlineBytes, entryPoint,
watch: watch);