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// Copyright (C) 2015 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: B.1.4 is not applied for Unicode RegExp - Identity escape with basic latin letters
info: |
The compatibility extensions defined in B.1.4 Regular Expressions Patterns
are not applied for Unicode RegExps.
Tested extension: "IdentityEscape[U] :: [~U] SourceCharacter but not c"
Forbidden extension (16.1):
The RegExp pattern grammars in 21.2.1 and B.1.4 must not be extended to recognize any of the
source characters A-Z or a-z as IdentityEscape[U] when the U grammar parameter is present.
es6id: 21.1.2
---*/
function isValidAlphaEscapeInAtom(s) {
switch (s) {
// Assertion [U] :: \b
case "b":
// Assertion [U] :: \B
case "B":
// ControlEscape :: one of f n r t v
case "f":
case "n":
case "r":
case "t":
case "v":
// CharacterClassEscape :: one of d D s S w W
case "d":
case "D":
case "s":
case "S":
case "w":
case "W":
return true;
default:
return false;
}
}
function isValidAlphaEscapeInClass(s) {
switch (s) {
// ClassEscape[U] :: b
case "b":
// ControlEscape :: one of f n r t v
case "f":
case "n":
case "r":
case "t":
case "v":
// CharacterClassEscape :: one of d D s S w W
case "d":
case "D":
case "s":
case "S":
case "w":
case "W":
return true;
default:
return false;
}
}
// IdentityEscape in AtomEscape
for (var cu = 0x41 /* A */; cu <= 0x5a /* Z */; ++cu) {
var s = String.fromCharCode(cu);
if (!isValidAlphaEscapeInAtom(s)) {
assert.throws(SyntaxError, function() {
RegExp("\\" + s, "u");
}, "IdentityEscape in AtomEscape: '" + s + "'");
}
}
for (var cu = 0x61 /* a */; cu <= 0x7a /* z */; ++cu) {
var s = String.fromCharCode(cu);
if (!isValidAlphaEscapeInAtom(s)) {
assert.throws(SyntaxError, function() {
RegExp("\\" + s, "u");
}, "IdentityEscape in AtomEscape: '" + s + "'");
}
}
// IdentityEscape in ClassEscape
for (var cu = 0x41 /* A */; cu <= 0x5a /* Z */; ++cu) {
var s = String.fromCharCode(cu);
if (!isValidAlphaEscapeInClass(s)) {
assert.throws(SyntaxError, function() {
RegExp("[\\" + s + "]", "u");
}, "IdentityEscape in ClassEscape: '" + s + "'");
}
}
for (var cu = 0x61 /* a */; cu <= 0x7a /* z */; ++cu) {
var s = String.fromCharCode(cu);
if (!isValidAlphaEscapeInClass(s)) {
assert.throws(SyntaxError, function() {
RegExp("[\\" + s + "]", "u");
}, "IdentityEscape in ClassEscape: '" + s + "'");
}
}
reportCompare(0, 0);