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// 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.
library symbol_validation_test;
@MirrorsUsed(targets: "symbol_validation_test")
import 'dart:mirrors';
import 'package:expect/expect.dart';
validSymbol(String string) {
Expect.equals(string, MirrorSystem.getName(new Symbol(string)),
'Valid symbol "$string" should be invertable');
Expect.equals(string, MirrorSystem.getName(MirrorSystem.getSymbol(string)),
'Valid symbol "$string" should be invertable');
}
invalidSymbol(String string) {
Expect.throws(() => new Symbol(string), (e) => e is ArgumentError,
'Invalid symbol "$string" should be rejected');
Expect.throws(() => MirrorSystem.getSymbol(string), (e) => e is ArgumentError,
'Invalid symbol "$string" should be rejected');
}
validPrivateSymbol(String string) {
ClosureMirror closure = reflect(main);
LibraryMirror library = closure.function.owner;
Expect.equals(
string,
MirrorSystem.getName(MirrorSystem.getSymbol(string, library)),
'Valid private symbol "$string" should be invertable');
}
main() {
// Operators that can be declared as class member operators.
// These are all valid as symbols.
var operators = [
'%',
'&',
'*',
'+',
'-',
'/',
'<',
'<<',
'<=',
'==',
'>',
'>=',
'>>',
'[]',
'[]=',
'^',
'unary-',
'|',
'~',
'~/'
];
operators.expand((op) => [op, "x.$op"]).forEach(validSymbol);
operators
.expand((op) => [".$op", "$op.x", "x$op", "_x.$op"])
.forEach(invalidSymbol);
operators
.expand((op) => operators.contains("$op=") ? [] : ["x.$op=", "$op="])
.forEach(invalidSymbol);
var simpleSymbols = [
'foo',
'bar_',
'baz.quz',
'fisk1',
'hest2fisk',
'a.b.c.d.e',
r'$',
r'foo$',
r'bar$bar',
r'$.$',
r'x6$_',
r'$6_',
r'x.$$6_',
'x_',
'x_.x_',
'unary',
'x.unary'
];
simpleSymbols.expand((s) => [s, "s="]).forEach(validSymbol);
var nonSymbols = [
// Non-identifiers.
'6', '0foo', ',', 'S with M', '_invalid&private', "#foo", " foo", "foo ",
// Operator variants.
'+=', '()', 'operator+', 'unary+', '>>>', "&&", "||", "!", "@", "#", "[",
// Private symbols.
'_', '_x', 'x._y', 'x._',
// Empty parts of "qualified" symbols.
'.', 'x.', '.x', 'x..y'
];
nonSymbols.forEach(invalidSymbol);
// Reserved words are not valid identifiers and therefore not valid symbols.
var reservedWords = [
"assert",
"break",
"case",
"catch",
"class",
"const",
"continue",
"default",
"do",
"else",
"enum",
"extends",
"false",
"final",
"finally",
"for",
"if",
"in",
"is",
"new",
"null",
"rethrow",
"return",
"super",
"switch",
"this",
"throw",
"true",
"try",
"var",
"void",
"while",
"with"
];
reservedWords
.expand((w) => [w, "$w=", "x.$w", "$w.x", "x.$w.x"])
.forEach(invalidSymbol);
reservedWords
.expand((w) => ["${w}_", "${w}\$", "${w}q"])
.forEach(validSymbol);
// Built-in identifiers are valid identifiers that are restricted from being
// used in some cases, but they are all valid symbols.
var builtInIdentifiers = [
"abstract",
"as",
"dynamic",
"export",
"external",
"factory",
"get",
"implements",
"import",
"library",
"operator",
"part",
"set",
"static",
"typedef"
];
builtInIdentifiers
.expand((w) => [w, "$w=", "x.$w", "$w.x", "x.$w.x", "$w=", "x.$w="])
.forEach(validSymbol);
var privateSymbols = ['_', '_x', 'x._y', 'x._', 'x.y._', 'x._.y', '_true'];
privateSymbols.forEach(invalidSymbol);
privateSymbols.forEach(validPrivateSymbol); // //# 01: ok
}