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packages/intl/test/message_extraction/sample_with_messages.dart

+// Copyright (c) 2013, 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.
+
+/**
+ * This is a program with various [Intl.message] messages. It just prints
+ * all of them, and is used for testing of message extraction, translation,
+ * and code generation.
+ */
+library sample;
+
+import "package:intl/intl.dart";
+import "foo_messages_all.dart";
+import "print_to_list.dart";
+import "dart:async";
+import "package:unittest/unittest.dart";
+
+part 'part_of_sample_with_messages.dart';
+
+message1() => Intl.message("This is a message", name: 'message1', desc: 'foo');
+
+message2(x) => Intl.message("Another message with parameter $x",
+    name: 'message2', desc: 'Description 2', args: [x], examples: {'x': 3});
+
+// A string with multiple adjacent strings concatenated together, verify
+// that the parser handles this properly.
+multiLine() => Intl.message("This "
+    "string "
+    "extends "
+    "across "
+    "multiple "
+    "lines.", name: "multiLine");
+
+// Have types on the enclosing function's arguments.
+types(int a, String b, List c) =>
+    Intl.message("$a, $b, $c", name: 'types', args: [a, b, c]);
+
+// This string will be printed with a French locale, so it will always show
+// up in the French version, regardless of the current locale.
+alwaysTranslated() => Intl.message("This string is always translated",
+    locale: 'fr', name: 'alwaysTranslated');
+
+// Test interpolation with curly braces around the expression, but it must
+// still be just a variable reference.
+trickyInterpolation(s) => Intl.message(
+    "Interpolation is tricky when it ends a sentence like ${s}.",
+    name: 'trickyInterpolation', args: [s]);
+
+get leadingQuotes => Intl.message("\"So-called\"", name: 'leadingQuotes');
+
+// A message with characters not in the basic multilingual plane.
+originalNotInBMP() => Intl.message("Ancient Greek hangman characters: 𐅆𐅇.",
+    name: "originalNotInBMP");
+
+// A string for which we don't provide all translations.
+notAlwaysTranslated() => Intl.message("This is missing some translations",
+    name: "notAlwaysTranslated");
+
+// This is invalid and should be recognized as such, because the message has
+// to be a literal. Otherwise, interpolations would be outside of the function
+// scope.
+var someString = "No, it has to be a literal string";
+noVariables() => Intl.message(someString, name: "noVariables");
+
+// This is unremarkable in English, but the translated versions will contain
+// characters that ought to be escaped during code generation.
+escapable() => Intl.message("Escapable characters here: ", name: "escapable");
+
+outerPlural(n) => Intl.plural(n,
+    zero: 'none',
+    one: 'one',
+    other: 'some',
+    name: 'outerPlural',
+    desc: 'A plural with no enclosing message',
+    args: [n]);
+
+outerGender(g) => Intl.gender(g,
+    male: 'm',
+    female: 'f',
+    other: 'o',
+    name: 'outerGender',
+    desc: 'A gender with no enclosing message',
+    args: [g]);
+
+pluralThatFailsParsing(noOfThings) => Intl.plural(noOfThings,
+    one: "1 thing:",
+    other: "$noOfThings things:",
+    name: "pluralThatFailsParsing",
+    args: [noOfThings],
+    desc: "How many things are there?");
+
+// A standalone gender message where we don't provide name or args. This should
+// be rejected by validation code.
+invalidOuterGender(g) => Intl.gender(g, other: 'o');
+
+// A general select
+outerSelect(currency, amount) => Intl.select(currency, {
+  "CDN": "$amount Canadian dollars",
+  "other": "$amount some currency or other."
+}, name: "outerSelect", args: [currency, amount]);
+
+// A select with a plural inside the expressions.
+nestedSelect(currency, amount) => Intl.select(currency, {
+  "CDN": """${Intl.plural(amount, one: '$amount Canadian dollar',
+          other: '$amount Canadian dollars')}""",
+  "other": "Whatever",
+}, name: "nestedSelect", args: [currency, amount]);
+
+// A trivial nested plural/gender where both are done directly rather than
+// in interpolations.
+nestedOuter(number, gen) => Intl.plural(number,
+    other: Intl.gender(gen, male: "$number male", other: "$number other"),
+    name: 'nestedOuter',
+    args: [number, gen]);
+
+sameContentsDifferentName() => Intl.message("Hello World",
+    name: "sameContentsDifferentName",
+    desc: "One of two messages with the same contents, but different names");
+
+differentNameSameContents() => Intl.message("Hello World",
+    name: "differentNameSameContents",
+    desc: "One of two messages with the same contents, but different names");
+
+/// Distinguish two messages with identical text using the meaning parameter.
+rentToBePaid() => Intl.message("rent",
+    name: "rentToBePaid",
+    meaning: 'Money for rent',
+    desc: "Money to be paid for rent");
+
+rentAsVerb() => Intl.message("rent",
+    name: "rentAsVerb",
+    meaning: 'rent as a verb',
+    desc: "The action of renting, as in rent a car");
+
+printStuff(Intl locale) {
+
+  // Use a name that's not a literal so this will get skipped. Then we have
+  // a name that's not in the original but we include it in the French
+  // translation. Because it's not in the original it shouldn't get included
+  // in the generated catalog and shouldn't get translated.
+  if (locale.locale == 'fr') {
+    var badName = "thisNameIsNotInTheOriginal";
+    var notInOriginal = Intl.message("foo", name: badName);
+    if (notInOriginal != "foo") {
+      throw "You shouldn't be able to introduce a new message in a translation";
+    }
+  }
+
+  // A function that is assigned to a variable. It's also nested
+  // within another function definition.
+  message3(a, b, c) => Intl.message(
+      "Characters that need escaping, e.g slashes \\ dollars \${ (curly braces "
+      "are ok) and xml reserved characters <& and quotes \" "
+      "parameters $a, $b, and $c", name: 'message3', args: [a, b, c]);
+  var messageVariable = message3;
+
+  printOut("-------------------------------------------");
+  printOut("Printing messages for ${locale.locale}");
+  Intl.withLocale(locale.locale, () {
+    printOut(message1());
+    printOut(message2("hello"));
+    printOut(messageVariable(1, 2, 3));
+    printOut(multiLine());
+    printOut(types(1, "b", ["c", "d"]));
+    printOut(leadingQuotes);
+    printOut(alwaysTranslated());
+    printOut(trickyInterpolation("this"));
+    var thing = new YouveGotMessages();
+    printOut(thing.method());
+    printOut(thing.nonLambda());
+    printOut(YouveGotMessages.staticMessage());
+    printOut(notAlwaysTranslated());
+    printOut(originalNotInBMP());
+    printOut(escapable());
+
+    printOut(thing.plurals(0));
+    printOut(thing.plurals(1));
+    printOut(thing.plurals(2));
+    printOut(thing.plurals(3));
+    printOut(thing.plurals(4));
+    printOut(thing.plurals(5));
+    printOut(thing.plurals(6));
+    printOut(thing.plurals(7));
+    printOut(thing.plurals(8));
+    printOut(thing.plurals(9));
+    printOut(thing.plurals(10));
+    printOut(thing.plurals(11));
+    printOut(thing.plurals(20));
+    printOut(thing.plurals(100));
+    printOut(thing.plurals(101));
+    printOut(thing.plurals(100000));
+    var alice = new Person("Alice", "female");
+    var bob = new Person("Bob", "male");
+    var cat = new Person("cat", null);
+    printOut(thing.whereTheyWent(alice, "house"));
+    printOut(thing.whereTheyWent(bob, "house"));
+    printOut(thing.whereTheyWent(cat, "litter box"));
+    printOut(thing.nested([alice, bob], "magasin"));
+    printOut(thing.nested([alice], "magasin"));
+    printOut(thing.nested([], "magasin"));
+    printOut(thing.nested([bob, bob], "magasin"));
+    printOut(thing.nested([alice, alice], "magasin"));
+
+    printOut(outerPlural(0));
+    printOut(outerPlural(1));
+    printOut(outerGender("male"));
+    printOut(outerGender("female"));
+    printOut(nestedOuter(7, "male"));
+    printOut(outerSelect("CDN", 7));
+    printOut(outerSelect("EUR", 5));
+    printOut(nestedSelect("CDN", 1));
+    printOut(nestedSelect("CDN", 2));
+    printOut(pluralThatFailsParsing(1));
+    printOut(pluralThatFailsParsing(2));
+    printOut(differentNameSameContents());
+    printOut(sameContentsDifferentName());
+    printOut(rentAsVerb());
+    printOut(rentToBePaid());
+  });
+}
+
+var localeToUse = 'en_US';
+
+main() {
+  var fr = new Intl("fr");
+  var english = new Intl("en_US");
+  var de = new Intl("de_DE");
+  // Throw in an initialize of a null locale to make sure it doesn't throw.
+  initializeMessages(null);
+
+  // Verify that a translated message isn't initially present.
+  var messageInGerman = Intl.withLocale('de_DE', message1);
+  expect(messageInGerman, "This is a message");
+
+  var f1 = initializeMessages(fr.locale)
+      // Since English has the one message which is always translated, we
+      // can't print it until French is ready.
+      .then((_) => printStuff(english)).then((_) => printStuff(fr));
+  var f2 = initializeMessages('de-de').then((_) => printStuff(de));
+  return Future.wait([f1, f2]);
+}