18e4c46de5
This implements the proposal at https://github.com/tc39/proposal-template-literal-revision staged behind a flag --harmony-template-escapes. The proposal allows invalid octal, unicode, and hexadecimal escape sequences to appear in tagged template literals, instead of being a syntax error. These have a 'cooked' value of 'undefined', but are still accessible through the 'raw' property. BUG=v8:5546 Review-Url: https://codereview.chromium.org/2665513002 Cr-Commit-Position: refs/heads/master@{#43384}
98 lines
3.7 KiB
JavaScript
98 lines
3.7 KiB
JavaScript
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Test simple literals.
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assertEquals(8, eval("8"));
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assertEquals(null, eval("null"));
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assertEquals("abc", eval("'abc'"));
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assertEquals(8, eval("6;'abc';8"));
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// Characters just outside the ranges of hex-escapes.
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// "/" comes just before "0".
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assertThrows('"\\x1/"');
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assertThrows('"\\u111/"');
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assertEquals("\\x1\\/", RegExp("\\x1/").source);
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assertEquals("\\u111\\/", RegExp("\\u111/").source);
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// ":" comes just after "9".
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assertThrows('"\\x1:"');
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assertThrows('"\\u111:"');
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assertEquals("\\x1:", /\x1:/.source);
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assertEquals("\\u111:", /\u111:/.source);
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// "`" comes just before "a".
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assertThrows('"\\x1`"');
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assertThrows('"\\u111`"');
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assertEquals("\\x1`", /\x1`/.source);
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assertEquals("\\u111`", /\u111`/.source);
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// "g" comes just before "f".
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assertThrows('"\\x1g"');
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assertThrows('"\\u111g"');
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assertEquals("\\x1g", /\x1g/.source);
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assertEquals("\\u111g", /\u111g/.source);
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// "@" comes just before "A".
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assertThrows('"\\x1@"');
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assertThrows('"\\u111@"');
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assertEquals("\\x1@", /\x1@/.source);
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assertEquals("\\u111@", /\u111@/.source);
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// "G" comes just after "F".
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assertThrows('"\\x1G"');
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assertThrows('"\\u111G"');
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assertEquals("\\x1G", /\x1G/.source);
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assertEquals("\\u111G", /\u111G/.source);
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// Test that octal literals continue to be forbidden in template even
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// when followed by a string containing an octal literal.
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assertThrows('`\\1`\n"\\1"');
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// Test some materialized array literals.
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assertEquals([1,2,3,4], eval('[1,2,3,4]'));
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assertEquals([[1,2],3,4], eval('[[1,2],3,4]'));
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assertEquals([1,[2,3,4]], eval('[1,[2,3,4]]'));
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assertEquals([1,2,3,4], eval('var a=1, b=2; [a,b,3,4]'))
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assertEquals([1,2,3,4], eval('var a=1, b=2, c = [a,b,3,4]; c'));
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function double(x) { return x + x; }
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var s = 'var a = 1, b = 2; [double(a), double(b), double(3), double(4)]';
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assertEquals([2,4,6,8], eval(s));
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// Test array literals in effect context.
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assertEquals(17, eval('[1,2,3,4]; 17'));
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assertEquals(19, eval('var a=1, b=2; [a,b,3,4]; 19'));
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assertEquals(23, eval('var a=1, b=2; c=23; [a,b,3,4]; c'));
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// Test that literals work for non-smi indices.
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// Ensure hash-map collision if using value as hash.
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var o = {"2345678901" : 42, "2345678901" : 30};
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