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Fixed #7704, #14045 and #15495 -- Introduce a lexer for Javascript to fix multiple problems of the translation of Javascript files with xgettext. Many thanks to Ned Batchelder for his contribution of the JsLex library.
git-svn-id: http://code.djangoproject.com/svn/django/trunk@16333 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Jannis Leidel
217
tests/regressiontests/utils/jslex.py
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217
tests/regressiontests/utils/jslex.py
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"""Tests for jslex."""
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# encoding: utf-8
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# originally from https://bitbucket.org/ned/jslex
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import difflib
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from django.test import TestCase
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from django.utils.jslex import JsLexer, prepare_js_for_gettext
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class JsTokensTest(TestCase):
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LEX_CASES = [
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# ids
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("a ABC $ _ a123", ["id a", "id ABC", "id $", "id _", "id a123"]),
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(r"\u1234 abc\u0020 \u0065_\u0067", [r"id \u1234", r"id abc\u0020", r"id \u0065_\u0067"]),
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# numbers
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("123 1.234 0.123e-3 0 1E+40 1e1 .123", ["dnum 123", "dnum 1.234", "dnum 0.123e-3", "dnum 0", "dnum 1E+40", "dnum 1e1", "dnum .123"]),
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("0x1 0xabCD 0XABcd", ["hnum 0x1", "hnum 0xabCD", "hnum 0XABcd"]),
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("010 0377 090", ["onum 010", "onum 0377", "dnum 0", "dnum 90"]),
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("0xa123ghi", ["hnum 0xa123", "id ghi"]),
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# keywords
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("function Function FUNCTION", ["keyword function", "id Function", "id FUNCTION"]),
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("const constructor in inherits", ["keyword const", "id constructor", "keyword in", "id inherits"]),
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("true true_enough", ["reserved true", "id true_enough"]),
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# strings
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(''' 'hello' "hello" ''', ["string 'hello'", 'string "hello"']),
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(r""" 'don\'t' "don\"t" '"' "'" '\'' "\"" """,
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[r"""string 'don\'t'""", r'''string "don\"t"''', r"""string '"'""", r'''string "'"''', r"""string '\''""", r'''string "\""''']),
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(ur'"ƃuıxǝ⅂ ʇdıɹɔsɐʌɐſ\""', [ur'string "ƃuıxǝ⅂ ʇdıɹɔsɐʌɐſ\""']),
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# comments
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("a//b", ["id a", "linecomment //b"]),
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("/****/a/=2//hello", ["comment /****/", "id a", "punct /=", "dnum 2", "linecomment //hello"]),
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("/*\n * Header\n */\na=1;", ["comment /*\n * Header\n */", "id a", "punct =", "dnum 1", "punct ;"]),
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# punctuation
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("a+++b", ["id a", "punct ++", "punct +", "id b"]),
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# regex
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(r"a=/a*/,1", ["id a", "punct =", "regex /a*/", "punct ,", "dnum 1"]),
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(r"a=/a*[^/]+/,1", ["id a", "punct =", "regex /a*[^/]+/", "punct ,", "dnum 1"]),
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(r"a=/a*\[^/,1", ["id a", "punct =", r"regex /a*\[^/", "punct ,", "dnum 1"]),
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(r"a=/\//,1", ["id a", "punct =", r"regex /\//", "punct ,", "dnum 1"]),
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# next two are from http://www.mozilla.org/js/language/js20-2002-04/rationale/syntax.html#regular-expressions
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("""for (var x = a in foo && "</x>" || mot ? z:/x:3;x<5;y</g/i) {xyz(x++);}""",
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["keyword for", "punct (", "keyword var", "id x", "punct =", "id a", "keyword in",
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"id foo", "punct &&", 'string "</x>"', "punct ||", "id mot", "punct ?", "id z",
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"punct :", "regex /x:3;x<5;y</g", "punct /", "id i", "punct )", "punct {",
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"id xyz", "punct (", "id x", "punct ++", "punct )", "punct ;", "punct }"]),
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("""for (var x = a in foo && "</x>" || mot ? z/x:3;x<5;y</g/i) {xyz(x++);}""",
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["keyword for", "punct (", "keyword var", "id x", "punct =", "id a", "keyword in",
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"id foo", "punct &&", 'string "</x>"', "punct ||", "id mot", "punct ?", "id z",
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"punct /", "id x", "punct :", "dnum 3", "punct ;", "id x", "punct <", "dnum 5",
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"punct ;", "id y", "punct <", "regex /g/i", "punct )", "punct {",
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"id xyz", "punct (", "id x", "punct ++", "punct )", "punct ;", "punct }"]),
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# Various "illegal" regexes that are valid according to the std.
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(r"""/????/, /++++/, /[----]/ """, ["regex /????/", "punct ,", "regex /++++/", "punct ,", "regex /[----]/"]),
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# Stress cases from http://stackoverflow.com/questions/5533925/what-javascript-constructs-does-jslex-incorrectly-lex/5573409#5573409
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(r"""/\[/""", [r"""regex /\[/"""]),
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(r"""/[i]/""", [r"""regex /[i]/"""]),
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(r"""/[\]]/""", [r"""regex /[\]]/"""]),
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(r"""/a[\]]/""", [r"""regex /a[\]]/"""]),
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(r"""/a[\]]b/""", [r"""regex /a[\]]b/"""]),
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(r"""/[\]/]/gi""", [r"""regex /[\]/]/gi"""]),
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(r"""/\[[^\]]+\]/gi""", [r"""regex /\[[^\]]+\]/gi"""]),
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("""
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rexl.re = {
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NAME: /^(?!\d)(?:\w)+|^"(?:[^"]|"")+"/,
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UNQUOTED_LITERAL: /^@(?:(?!\d)(?:\w|\:)+|^"(?:[^"]|"")+")\[[^\]]+\]/,
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QUOTED_LITERAL: /^'(?:[^']|'')*'/,
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NUMERIC_LITERAL: /^[0-9]+(?:\.[0-9]*(?:[eE][-+][0-9]+)?)?/,
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SYMBOL: /^(?:==|=|<>|<=|<|>=|>|!~~|!~|~~|~|!==|!=|!~=|!~|!|&|\||\.|\:|,|\(|\)|\[|\]|\{|\}|\?|\:|;|@|\^|\/\+|\/|\*|\+|-)/
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};
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""",
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["id rexl", "punct .", "id re", "punct =", "punct {",
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"id NAME", "punct :", r"""regex /^(?!\d)(?:\w)+|^"(?:[^"]|"")+"/""", "punct ,",
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"id UNQUOTED_LITERAL", "punct :", r"""regex /^@(?:(?!\d)(?:\w|\:)+|^"(?:[^"]|"")+")\[[^\]]+\]/""", "punct ,",
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"id QUOTED_LITERAL", "punct :", r"""regex /^'(?:[^']|'')*'/""", "punct ,",
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"id NUMERIC_LITERAL", "punct :", r"""regex /^[0-9]+(?:\.[0-9]*(?:[eE][-+][0-9]+)?)?/""", "punct ,",
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"id SYMBOL", "punct :", r"""regex /^(?:==|=|<>|<=|<|>=|>|!~~|!~|~~|~|!==|!=|!~=|!~|!|&|\||\.|\:|,|\(|\)|\[|\]|\{|\}|\?|\:|;|@|\^|\/\+|\/|\*|\+|-)/""",
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"punct }", "punct ;"
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]),
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("""
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rexl.re = {
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NAME: /^(?!\d)(?:\w)+|^"(?:[^"]|"")+"/,
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UNQUOTED_LITERAL: /^@(?:(?!\d)(?:\w|\:)+|^"(?:[^"]|"")+")\[[^\]]+\]/,
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QUOTED_LITERAL: /^'(?:[^']|'')*'/,
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NUMERIC_LITERAL: /^[0-9]+(?:\.[0-9]*(?:[eE][-+][0-9]+)?)?/,
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SYMBOL: /^(?:==|=|<>|<=|<|>=|>|!~~|!~|~~|~|!==|!=|!~=|!~|!|&|\||\.|\:|,|\(|\)|\[|\]|\{|\}|\?|\:|;|@|\^|\/\+|\/|\*|\+|-)/
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};
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str = '"';
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""",
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["id rexl", "punct .", "id re", "punct =", "punct {",
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"id NAME", "punct :", r"""regex /^(?!\d)(?:\w)+|^"(?:[^"]|"")+"/""", "punct ,",
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"id UNQUOTED_LITERAL", "punct :", r"""regex /^@(?:(?!\d)(?:\w|\:)+|^"(?:[^"]|"")+")\[[^\]]+\]/""", "punct ,",
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"id QUOTED_LITERAL", "punct :", r"""regex /^'(?:[^']|'')*'/""", "punct ,",
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"id NUMERIC_LITERAL", "punct :", r"""regex /^[0-9]+(?:\.[0-9]*(?:[eE][-+][0-9]+)?)?/""", "punct ,",
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"id SYMBOL", "punct :", r"""regex /^(?:==|=|<>|<=|<|>=|>|!~~|!~|~~|~|!==|!=|!~=|!~|!|&|\||\.|\:|,|\(|\)|\[|\]|\{|\}|\?|\:|;|@|\^|\/\+|\/|\*|\+|-)/""",
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"punct }", "punct ;",
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"id str", "punct =", """string '"'""", "punct ;",
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]),
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(r""" this._js = "e.str(\"" + this.value.replace(/\\/g, "\\\\").replace(/"/g, "\\\"") + "\")"; """,
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["keyword this", "punct .", "id _js", "punct =", r'''string "e.str(\""''', "punct +", "keyword this", "punct .",
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"id value", "punct .", "id replace", "punct (", r"regex /\\/g", "punct ,", r'string "\\\\"', "punct )",
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"punct .", "id replace", "punct (", r'regex /"/g', "punct ,", r'string "\\\""', "punct )", "punct +",
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r'string "\")"', "punct ;"]),
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]
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def make_function(input, toks):
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def test_func(self):
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lexer = JsLexer()
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result = ["%s %s" % (name, tok) for name, tok in lexer.lex(input) if name != 'ws']
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self.assertListEqual(result, toks)
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return test_func
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for i, (input, toks) in enumerate(JsTokensTest.LEX_CASES):
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setattr(JsTokensTest, "test_case_%d" % i, make_function(input, toks))
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GETTEXT_CASES = (
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(
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r"""
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a = 1; /* /[0-9]+/ */
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b = 0x2a0b / 1; // /[0-9]+/
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c = 3;
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""",
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r"""
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a = 1; /* /[0-9]+/ */
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b = 0x2a0b / 1; // /[0-9]+/
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c = 3;
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"""
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), (
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r"""
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a = 1.234e-5;
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/*
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* /[0-9+/
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*/
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b = .0123;
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""",
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r"""
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a = 1.234e-5;
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/*
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* /[0-9+/
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*/
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b = .0123;
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"""
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), (
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r"""
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x = y / z;
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alert(gettext("hello"));
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x /= 3;
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""",
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r"""
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x = y / z;
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alert(gettext("hello"));
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x /= 3;
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"""
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), (
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r"""
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s = "Hello \"th/foo/ere\"";
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s = 'He\x23llo \'th/foo/ere\'';
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s = 'slash quote \", just quote "';
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""",
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r"""
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s = "Hello \"th/foo/ere\"";
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s = "He\x23llo \'th/foo/ere\'";
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s = "slash quote \", just quote \"";
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"""
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), (
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r"""
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s = "Line continuation\
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continued /hello/ still the string";/hello/;
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""",
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r"""
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s = "Line continuation\
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continued /hello/ still the string";"REGEX";
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"""
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), (
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r"""
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var regex = /pattern/;
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var regex2 = /matter/gm;
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var regex3 = /[*/]+/gm.foo("hey");
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""",
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r"""
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var regex = "REGEX";
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var regex2 = "REGEX";
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var regex3 = "REGEX".foo("hey");
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"""
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), (
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r"""
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for (var x = a in foo && "</x>" || mot ? z:/x:3;x<5;y</g/i) {xyz(x++);}
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for (var x = a in foo && "</x>" || mot ? z/x:3;x<5;y</g/i) {xyz(x++);}
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""",
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r"""
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for (var x = a in foo && "</x>" || mot ? z:"REGEX"/i) {xyz(x++);}
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for (var x = a in foo && "</x>" || mot ? z/x:3;x<5;y<"REGEX") {xyz(x++);}
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"""
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), (
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r"""
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\u1234xyz = gettext('Hello there');
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""", r"""
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Uu1234xyz = gettext("Hello there");
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"""
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)
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)
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class JsToCForGettextTest(TestCase):
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pass
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def make_function(js, c):
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def test_func(self):
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self.assertMultiLineEqual(prepare_js_for_gettext(js), c)
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return test_func
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for i, pair in enumerate(GETTEXT_CASES):
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setattr(JsToCForGettextTest, "test_case_%d" % i, make_function(*pair))
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