blob: 9fc946a4548f6314b22e03373b91ecd351255493 [file] [log] [blame]
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'dart:io';
// TODO(rnystrom): Differences from test.dart's version:
// - Remove special handling for "ff" as firefox.
// - "windows" -> "win".
// - "macos" -> "mac".
// - toString() on enum classes is just name.
// - builderTag and babel default to empty string, not null.
// Need to migrate test.dart to not expect the above before it can use this.
// READ ME! If you add a new field to this, make sure to add it to
// [parse()], [optionsEqual()], [hashCode], and [toString()]. A good check is to
// comment out an existing field and see what breaks. Every error is a place
// where you will need to add code for your new field.
/// A set of options that affects how a Dart SDK test is run in a way that may
/// affect its outcome.
///
/// This includes options like "compiler" and "runtime" which fundamentally
/// decide how a test is executed. Options are tracked because a single test
/// may have different outcomes for different configurations. For example, it
/// may currently pass on the VM but not dart2js or vice versa.
///
/// Options that affect how a test can be run but don't affect its outcome are
/// *not* stored here. Things like how test results are displayed, where logs
/// are written, etc. live outside of this.
class Configuration {
/// Expands a configuration name "[template]" all using [optionsJson] to a
/// list of configurations.
///
/// A template is a configuration name that contains zero or more
/// parenthesized sections. Within the parentheses are a series of options
/// separated by pipes. For example:
///
/// strong-fasta-(linux|mac|win)-(debug|release)
///
/// Text outside of parenthesized groups is treated literally. Each
/// parenthesized section expands to a configuration for each of the options
/// separated by pipes. If a template contains multiple parenthesized
/// sections, configurations are created for all combinations of them. The
/// above template expands to:
///
/// strong-fasta-linux-debug
/// strong-fasta-linux-release
/// strong-fasta-mac-debug
/// strong-fasta-mac-release
/// strong-fasta-win-debug
/// strong-fasta-win-release
///
/// After expansion, the resulting strings (and [optionsJson]) are passed to
/// [parse()] to convert each one to a full configuration.
static List<Configuration> expandTemplate(
String template, Map<String, dynamic> optionsJson) {
if (template.isEmpty) throw FormatException("Template must not be empty.");
var sections = <List<String>>[];
var start = 0;
while (start < template.length) {
var openParen = template.indexOf("(", start);
if (openParen == -1) {
// Add the last literal section.
sections.add([template.substring(start, template.length)]);
break;
}
var closeParen = template.indexOf(")", openParen);
if (closeParen == -1) {
throw FormatException('Missing ")" in name template "$template".');
}
// Add the literal part before the next "(".
sections.add([template.substring(start, openParen)]);
// Add the options within the parentheses.
sections.add(template.substring(openParen + 1, closeParen).split("|"));
// Continue past the ")".
start = closeParen + 1;
}
var result = <Configuration>[];
// Walk through every combination of every section.
iterateSection(String prefix, int section) {
// If we pinned all the sections, parse it.
if (section >= sections.length) {
try {
result.add(Configuration.parse(prefix, optionsJson));
} on FormatException catch (ex) {
throw FormatException(
'Could not parse expanded configuration "$prefix" from template '
'"$template":\n${ex.message}');
}
return;
}
for (var i = 0; i < sections[section].length; i++) {
iterateSection(prefix + sections[section][i], section + 1);
}
}
iterateSection("", 0);
return result;
}
/// Parse a single configuration with [name] with additional options defined
/// in [optionsJson].
///
/// The name should be a series of words separated by hyphens. Any word that
/// matches the name of an [Architecture], [Compiler], [Mode], [Runtime], or
/// [System] sets that option in the resulting configuration. Those options
/// may also be specified in the JSON map.
///
/// Additional Boolean and string options are defined in the map. The key
/// names match the corresponding command-line option names, using kebab-case.
static Configuration parse(String name, Map<String, dynamic> optionsJson) {
if (name.isEmpty) throw FormatException("Name must not be empty.");
// Infer option values from the words in the configuration name.
var words = name.split("-").toSet();
var optionsCopy = new Map.of(optionsJson);
T enumOption<T extends NamedEnum>(
String option, List<String> allowed, T Function(String) parse) {
// Look up the value from the words in the name.
T fromName;
for (var value in allowed) {
// Don't treat "none" as matchable since it's ambiguous as to whether
// it refers to compiler or runtime.
if (value == "none") continue;
if (words.contains(value)) {
if (fromName != null) {
throw FormatException(
'Found multiple values for $option ("$fromName" and "$value"), '
'in configuration name.');
}
fromName = parse(value);
}
}
// Look up the value from the options.
T fromOption;
if (optionsCopy.containsKey(option)) {
fromOption = parse(optionsCopy[option] as String);
optionsCopy.remove(option);
}
if (fromName != null && fromOption != null) {
if (fromName == fromOption) {
throw FormatException(
'Redundant $option in configuration name "$fromName" and options.');
} else {
throw FormatException(
'Found $option "$fromOption" in options and "$fromName" in '
'configuration name.');
}
}
return fromName ?? fromOption;
}
bool boolOption(String option) {
if (!optionsCopy.containsKey(option)) return null;
var value = optionsCopy.remove(option);
if (value == null) throw FormatException('Option "$option" was null.');
if (value is! bool) {
throw FormatException('Option "$option" had value "$value", which is '
'not a bool.');
}
return value as bool;
}
int intOption(String option) {
if (!optionsCopy.containsKey(option)) return null;
var value = optionsCopy.remove(option);
if (value == null) throw FormatException('Option "$option" was null.');
if (value is! int) {
throw FormatException('Option "$option" had value "$value", which is '
'not an int.');
}
return value as int;
}
String stringOption(String option) {
if (!optionsCopy.containsKey(option)) return null;
var value = optionsCopy.remove(option);
if (value == null) throw FormatException('Option "$option" was null.');
if (value is! String) {
throw FormatException('Option "$option" had value "$value", which is '
'not a string.');
}
return value as String;
}
List<String> stringListOption(String option) {
if (!optionsCopy.containsKey(option)) return null;
var value = optionsCopy.remove(option);
if (value == null) throw FormatException('Option "$option" was null.');
if (value is! List) {
throw FormatException('Option "$option" had value "$value", which is '
'not a List.');
}
return new List<String>.from(value as List);
}
// Extract options from the name and map.
var architecture =
enumOption("architecture", Architecture.names, Architecture.find);
var compiler = enumOption("compiler", Compiler.names, Compiler.find);
var mode = enumOption("mode", Mode.names, Mode.find);
var runtime = enumOption("runtime", Runtime.names, Runtime.find);
var system = enumOption("system", System.names, System.find);
// Fill in any missing values using defaults when possible.
architecture ??= Architecture.x64;
system ??= System.host;
// Infer from compiler from runtime or vice versa.
if (compiler == null) {
if (runtime == null) {
throw FormatException(
'Must specify at least one of compiler or runtime in options or '
'configuration name.');
} else {
compiler = runtime.defaultCompiler;
}
} else {
if (runtime == null) {
runtime = compiler.defaultRuntime;
} else {
// Do nothing, specified both.
}
}
// Infer the mode from the compiler.
mode ??= compiler.defaultMode;
var configuration = Configuration(
name, architecture, compiler, mode, runtime, system,
babel: stringOption("babel"),
builderTag: stringOption("builder-tag"),
vmOptions: stringListOption("vm-options"),
dart2jsOptions: stringListOption("dart2js-options"),
timeout: intOption("timeout"),
enableAsserts: boolOption("enable-asserts"),
isChecked: boolOption("checked"),
isCsp: boolOption("csp"),
isHostChecked: boolOption("host-checked"),
isMinified: boolOption("minified"),
previewDart2: boolOption("preview-dart-2"),
useAnalyzerCfe: boolOption("use-cfe"),
useAnalyzerFastaParser: boolOption("analyzer-use-fasta-parser"),
useBlobs: boolOption("use-blobs"),
useElf: boolOption("use-elf"),
useHotReload: boolOption("hot-reload"),
useHotReloadRollback: boolOption("hot-reload-rollback"),
useSdk: boolOption("use-sdk"));
// Should have consumed the whole map.
if (optionsCopy.isNotEmpty) {
throw new FormatException('Unknown option "${optionsCopy.keys.first}".');
}
return configuration;
}
final String name;
final Architecture architecture;
final Compiler compiler;
final Mode mode;
final Runtime runtime;
final System system;
final String babel;
final String builderTag;
final List<String> vmOptions;
final List<String> dart2jsOptions;
final int timeout;
final bool enableAsserts;
// TODO(rnystrom): Remove this when Dart 1.0 is no longer supported.
final bool isChecked;
final bool isCsp;
// TODO(rnystrom): Remove this when Dart 1.0 is no longer supported.
final bool isHostChecked;
final bool isMinified;
// TODO(rnystrom): Remove this when Dart 1.0 is no longer supported.
final bool previewDart2;
// TODO(whesse): Remove these when only fasta front end is in analyzer.
final bool useAnalyzerCfe;
final bool useAnalyzerFastaParser;
// TODO(rnystrom): What is this?
final bool useBlobs;
final bool useElf;
final bool useHotReload;
final bool useHotReloadRollback;
final bool useSdk;
Configuration(this.name, this.architecture, this.compiler, this.mode,
this.runtime, this.system,
{String babel,
String builderTag,
List<String> vmOptions,
List<String> dart2jsOptions,
int timeout,
bool enableAsserts,
bool isChecked,
bool isCsp,
bool isHostChecked,
bool isMinified,
bool previewDart2,
bool useAnalyzerCfe,
bool useAnalyzerFastaParser,
bool useBlobs,
bool useElf,
bool useHotReload,
bool useHotReloadRollback,
bool useSdk})
: babel = babel ?? "",
builderTag = builderTag ?? "",
vmOptions = vmOptions ?? <String>[],
dart2jsOptions = dart2jsOptions ?? <String>[],
timeout = timeout ?? -1,
enableAsserts = enableAsserts ?? false,
isChecked = isChecked ?? false,
isCsp = isCsp ?? false,
isHostChecked = isHostChecked ?? false,
isMinified = isMinified ?? false,
previewDart2 = previewDart2 ?? true,
useAnalyzerCfe = useAnalyzerCfe ?? false,
useAnalyzerFastaParser = useAnalyzerFastaParser ?? false,
useBlobs = useBlobs ?? false,
useElf = useElf ?? false,
useHotReload = useHotReload ?? false,
useHotReloadRollback = useHotReloadRollback ?? false,
useSdk = useSdk ?? false;
/// Returns `true` if this configuration's options all have the same values
/// as [other].
bool optionsEqual(Configuration other) =>
architecture == other.architecture &&
compiler == other.compiler &&
mode == other.mode &&
runtime == other.runtime &&
system == other.system &&
babel == other.babel &&
builderTag == other.builderTag &&
vmOptions.join(" & ") == other.vmOptions.join(" & ") &&
dart2jsOptions.join(" & ") == other.dart2jsOptions.join(" & ") &&
timeout == other.timeout &&
enableAsserts == other.enableAsserts &&
isChecked == other.isChecked &&
isCsp == other.isCsp &&
isHostChecked == other.isHostChecked &&
isMinified == other.isMinified &&
previewDart2 == other.previewDart2 &&
useAnalyzerCfe == other.useAnalyzerCfe &&
useAnalyzerFastaParser == other.useAnalyzerFastaParser &&
useBlobs == other.useBlobs &&
useElf == other.useElf &&
useHotReload == other.useHotReload &&
useHotReloadRollback == other.useHotReloadRollback &&
useSdk == other.useSdk;
bool operator ==(Object other) =>
other is Configuration && name == other.name && optionsEqual(other);
int _toBinary(List<bool> bits) =>
bits.fold(0, (sum, bit) => (sum << 1) ^ (bit ? 1 : 0));
int get hashCode =>
name.hashCode ^
architecture.hashCode ^
compiler.hashCode ^
mode.hashCode ^
runtime.hashCode ^
system.hashCode ^
babel.hashCode ^
builderTag.hashCode ^
vmOptions.join(" & ").hashCode ^
dart2jsOptions.join(" & ").hashCode ^
timeout.hashCode ^
_toBinary([
enableAsserts,
isChecked,
isCsp,
isHostChecked,
isMinified,
previewDart2,
useAnalyzerCfe,
useAnalyzerFastaParser,
useBlobs,
useElf,
useHotReload,
useHotReloadRollback,
useSdk
]);
String toString() {
var buffer = new StringBuffer();
buffer.write(name);
buffer.write("(");
var fields = <String>[];
fields.add("architecture: $architecture");
fields.add("compiler: $compiler");
fields.add("mode: $mode");
fields.add("runtime: $runtime");
fields.add("system: $system");
if (babel.isNotEmpty) fields.add("babel: $babel");
if (builderTag.isNotEmpty) fields.add("builder-tag: $builderTag");
if (vmOptions.isNotEmpty)
fields.add("vm-options: [${vmOptions.join(", ")}]");
if (dart2jsOptions.isNotEmpty)
fields.add("dart2js-options: [${dart2jsOptions.join(", ")}]");
if (timeout > 0) fields.add("timeout: $timeout");
if (enableAsserts) fields.add("enable-asserts");
if (isChecked) fields.add("checked");
if (isCsp) fields.add("csp");
if (isHostChecked) fields.add("host-checked");
if (isMinified) fields.add("minified");
if (previewDart2) fields.add("preview-dart-2");
if (useAnalyzerCfe) fields.add("use-cfe");
if (useAnalyzerFastaParser) fields.add("analyzer-use-fasta-parser");
if (useBlobs) fields.add("use-blobs");
if (useHotReload) fields.add("hot-reload");
if (useHotReloadRollback) fields.add("hot-reload-rollback");
if (useSdk) fields.add("use-sdk");
buffer.write(fields.join(", "));
buffer.write(")");
return buffer.toString();
}
String visualCompare(Configuration other) {
var buffer = new StringBuffer();
buffer.writeln(name);
buffer.writeln(other.name);
var fields = <String>[];
fields.add("architecture: $architecture ${other.architecture}");
fields.add("compiler: $compiler ${other.compiler}");
fields.add("mode: $mode ${other.mode}");
fields.add("runtime: $runtime ${other.runtime}");
fields.add("system: $system ${other.system}");
if (babel.isNotEmpty || other.babel.isNotEmpty) {
var ours = babel == "" ? "(none)" : babel;
var theirs = other.babel == "" ? "(none)" : other.babel;
fields.add("babel: $ours $theirs");
}
if (builderTag.isNotEmpty || other.builderTag.isNotEmpty) {
var ours = builderTag == "" ? "(none)" : builderTag;
var theirs = other.builderTag == "" ? "(none)" : other.builderTag;
fields.add("builder-tag: $ours $theirs");
}
if (vmOptions.isNotEmpty || other.vmOptions.isNotEmpty) {
var ours = "[${vmOptions.join(", ")}]";
var theirs = "[${other.vmOptions.join(", ")}]";
fields.add("vm-options: $ours $theirs");
}
if (dart2jsOptions.isNotEmpty || other.dart2jsOptions.isNotEmpty) {
var ours = "[${dart2jsOptions.join(", ")}]";
var theirs = "[${other.dart2jsOptions.join(", ")}]";
fields.add("dart2js-options: $ours $theirs");
}
fields.add("timeout: $timeout ${other.timeout}");
if (enableAsserts || other.enableAsserts) {
fields.add("enable-asserts $enableAsserts ${other.enableAsserts}");
}
if (isChecked || other.isChecked) {
fields.add("checked $isChecked ${other.isChecked}");
}
if (isCsp || other.isCsp) {
fields.add("csp $isCsp ${other.isCsp}");
}
if (isHostChecked || other.isHostChecked) {
fields.add("isHostChecked $isHostChecked ${other.isHostChecked}");
}
if (isMinified || other.isMinified) {
fields.add("isMinified $isMinified ${other.isMinified}");
}
if (previewDart2 || other.previewDart2) {
fields.add("previewDart2 $previewDart2 ${other.previewDart2}");
}
if (useAnalyzerCfe || other.useAnalyzerCfe) {
fields.add("useAnalyzerCfe $useAnalyzerCfe ${other.useAnalyzerCfe}");
}
if (useAnalyzerFastaParser || other.useAnalyzerFastaParser) {
fields.add("useAnalyzerFastaParser "
"$useAnalyzerFastaParser ${other.useAnalyzerFastaParser}");
}
if (useBlobs || other.useBlobs) {
fields.add("useBlobs $useBlobs ${other.useBlobs}");
}
if (useHotReload || other.useHotReload) {
fields.add("useHotReload $useHotReload ${other.useHotReload}");
}
if (isHostChecked) {
fields.add("host-checked $isHostChecked ${other.isHostChecked}");
}
if (useHotReloadRollback || other.useHotReloadRollback) {
fields.add("useHotReloadRollback"
" $useHotReloadRollback ${other.useHotReloadRollback}");
}
if (useSdk || other.useSdk) {
fields.add("useSdk $useSdk ${other.useSdk}");
}
buffer.write(fields.join("\n "));
buffer.write("\n");
return buffer.toString();
}
}
class Architecture extends NamedEnum {
static const ia32 = const Architecture._('ia32');
static const x64 = const Architecture._('x64');
static const arm = const Architecture._('arm');
static const armv6 = const Architecture._('armv6');
static const armv5te = const Architecture._('armv5te');
static const arm64 = const Architecture._('arm64');
static const simarm = const Architecture._('simarm');
static const simarmv6 = const Architecture._('simarmv6');
static const simarmv5te = const Architecture._('simarmv5te');
static const simarm64 = const Architecture._('simarm64');
static const simdbc = const Architecture._('simdbc');
static const simdbc64 = const Architecture._('simdbc64');
static final List<String> names = _all.keys.toList();
static final _all = new Map<String, Architecture>.fromIterable([
ia32,
x64,
arm,
armv6,
armv5te,
arm64,
simarm,
simarmv6,
simarmv5te,
simarm64,
simdbc,
simdbc64
], key: (architecture) => (architecture as Architecture).name);
static Architecture find(String name) {
var architecture = _all[name];
if (architecture != null) return architecture;
throw new ArgumentError('Unknown architecture "$name".');
}
const Architecture._(String name) : super(name);
}
class Compiler extends NamedEnum {
static const none = const Compiler._('none');
static const precompiler = const Compiler._('precompiler');
static const dart2js = const Compiler._('dart2js');
static const dart2analyzer = const Compiler._('dart2analyzer');
static const compareAnalyzerCfe = const Compiler._('compare_analyzer_cfe');
static const dartdevc = const Compiler._('dartdevc');
static const dartdevk = const Compiler._('dartdevk');
static const appJit = const Compiler._('app_jit');
static const appJitk = const Compiler._('app_jitk');
static const dartk = const Compiler._('dartk');
static const dartkp = const Compiler._('dartkp');
static const dartkb = const Compiler._('dartkb');
static const specParser = const Compiler._('spec_parser');
static const fasta = const Compiler._('fasta');
static final List<String> names = _all.keys.toList();
static final _all = new Map<String, Compiler>.fromIterable([
none,
precompiler,
dart2js,
dart2analyzer,
compareAnalyzerCfe,
dartdevc,
dartdevk,
appJit,
appJitk,
dartk,
dartkp,
dartkb,
specParser,
fasta,
], key: (compiler) => (compiler as Compiler).name);
static Compiler find(String name) {
var compiler = _all[name];
if (compiler != null) return compiler;
throw new ArgumentError('Unknown compiler "$name".');
}
const Compiler._(String name) : super(name);
/// Gets the runtimes this compiler can target.
List<Runtime> get supportedRuntimes {
switch (this) {
case Compiler.dart2js:
// Note: by adding 'none' as a configuration, if the user
// runs test.py -c dart2js -r drt,none the dart2js_none and
// dart2js_drt will be duplicating work. If later we don't need 'none'
// with dart2js, we should remove it from here.
return const [
Runtime.d8,
Runtime.jsshell,
Runtime.none,
Runtime.firefox,
Runtime.chrome,
Runtime.safari,
Runtime.ie9,
Runtime.ie10,
Runtime.ie11,
Runtime.edge,
Runtime.chromeOnAndroid,
];
case Compiler.dartdevc:
case Compiler.dartdevk:
// TODO(rnystrom): Expand to support other JS execution environments
// (other browsers, d8) when tested and working.
return const [
Runtime.none,
Runtime.chrome,
Runtime.edge,
Runtime.firefox,
Runtime.safari,
];
case Compiler.dart2analyzer:
case Compiler.compareAnalyzerCfe:
return const [Runtime.none];
case Compiler.appJit:
case Compiler.appJitk:
case Compiler.dartk:
case Compiler.dartkb:
return const [Runtime.vm, Runtime.selfCheck];
case Compiler.precompiler:
case Compiler.dartkp:
return const [Runtime.dartPrecompiled];
case Compiler.specParser:
return const [Runtime.none];
case Compiler.fasta:
return const [Runtime.none];
case Compiler.none:
return const [Runtime.vm, Runtime.flutter];
}
throw "unreachable";
}
/// The preferred runtime to use with this compiler if no other runtime is
/// specified.
Runtime get defaultRuntime {
switch (this) {
case Compiler.dart2js:
return Runtime.d8;
case Compiler.dartdevc:
case Compiler.dartdevk:
return Runtime.chrome;
case Compiler.dart2analyzer:
case Compiler.compareAnalyzerCfe:
return Runtime.none;
case Compiler.appJit:
case Compiler.appJitk:
case Compiler.dartk:
case Compiler.dartkb:
return Runtime.vm;
case Compiler.precompiler:
case Compiler.dartkp:
return Runtime.dartPrecompiled;
case Compiler.specParser:
case Compiler.fasta:
return Runtime.none;
case Compiler.none:
return Runtime.vm;
}
throw "unreachable";
}
Mode get defaultMode {
switch (this) {
case Compiler.dart2analyzer:
case Compiler.compareAnalyzerCfe:
case Compiler.dart2js:
case Compiler.dartdevc:
case Compiler.dartdevk:
case Compiler.fasta:
return Mode.release;
default:
return Mode.debug;
}
}
}
class Mode extends NamedEnum {
static const debug = const Mode._('debug');
static const product = const Mode._('product');
static const release = const Mode._('release');
static final List<String> names = _all.keys.toList();
static final _all = new Map<String, Mode>.fromIterable(
[debug, product, release],
key: (mode) => (mode as Mode).name);
static Mode find(String name) {
var mode = _all[name];
if (mode != null) return mode;
throw new ArgumentError('Unknown mode "$name".');
}
const Mode._(String name) : super(name);
bool get isDebug => this == debug;
}
class Runtime extends NamedEnum {
static const vm = const Runtime._('vm');
static const flutter = const Runtime._('flutter');
static const dartPrecompiled = const Runtime._('dart_precompiled');
static const d8 = const Runtime._('d8');
static const jsshell = const Runtime._('jsshell');
static const firefox = const Runtime._('firefox');
static const chrome = const Runtime._('chrome');
static const safari = const Runtime._('safari');
static const ie9 = const Runtime._('ie9');
static const ie10 = const Runtime._('ie10');
static const ie11 = const Runtime._('ie11');
static const edge = const Runtime._('edge');
static const chromeOnAndroid = const Runtime._('chromeOnAndroid');
static const selfCheck = const Runtime._('self_check');
static const none = const Runtime._('none');
static final List<String> names = _all.keys.toList();
static final _all = new Map<String, Runtime>.fromIterable([
vm,
flutter,
dartPrecompiled,
d8,
jsshell,
firefox,
chrome,
safari,
ie9,
ie10,
ie11,
edge,
chromeOnAndroid,
selfCheck,
none
], key: (runtime) => (runtime as Runtime).name);
static Runtime find(String name) {
var runtime = _all[name];
if (runtime != null) return runtime;
throw new ArgumentError('Unknown runtime "$name".');
}
const Runtime._(String name) : super(name);
bool get isBrowser => const [
ie9,
ie10,
ie11,
edge,
safari,
chrome,
firefox,
chromeOnAndroid
].contains(this);
bool get isIE => name.startsWith("ie");
bool get isSafari => name.startsWith("safari");
/// Whether this runtime is a command-line JavaScript environment.
bool get isJSCommandLine => const [d8, jsshell].contains(this);
/// If the runtime doesn't support `Window.open`, we use iframes instead.
bool get requiresIFrame => !const [ie11, ie10].contains(this);
/// The preferred compiler to use with this runtime if no other compiler is
/// specified.
Compiler get defaultCompiler {
switch (this) {
case vm:
case flutter:
return Compiler.none;
case dartPrecompiled:
return Compiler.precompiler;
case d8:
case jsshell:
case firefox:
case chrome:
case safari:
case ie9:
case ie10:
case ie11:
case edge:
case chromeOnAndroid:
return Compiler.dart2js;
case selfCheck:
return Compiler.dartk;
case none:
// If we aren't running it, we probably just want to analyze it.
return Compiler.dart2analyzer;
}
throw "unreachable";
}
}
class System extends NamedEnum {
static const android = const System._('android');
static const fuchsia = const System._('fuchsia');
static const linux = const System._('linux');
static const mac = const System._('mac');
static const win = const System._('win');
static final List<String> names = _all.keys.toList();
static final _all = new Map<String, System>.fromIterable(
[android, fuchsia, linux, mac, win],
key: (system) => (system as System).name);
/// Gets the system of the current machine.
static System get host => find(Platform.operatingSystem);
static System find(String name) {
var system = _all[name];
if (system != null) return system;
// Also allow dart:io's names for the operating systems.
switch (Platform.operatingSystem) {
case "macos":
return mac;
case "windows":
return win;
}
// TODO(rnystrom): What about ios?
throw new ArgumentError('Unknown operating system "$name".');
}
const System._(String name) : super(name);
/// The root directory name for build outputs on this system.
String get outputDirectory {
switch (this) {
case android:
case fuchsia:
case linux:
case win:
return 'out/';
case mac:
return 'xcodebuild/';
}
throw "unreachable";
}
}
/// Base class for an enum-like class whose values are identified by name.
abstract class NamedEnum {
final String name;
const NamedEnum(this.name);
String toString() => name;
}